GAINING ELEMENT

专利摘要:
This includes reinforcement elements and reinforcement constructions for limiting shear stresses and / or punch prevention. Furthermore, related concrete floors and buildings are provided that have a high resistance to punching. Related methods are also provided, as well as the use of the aforementioned reinforcement elements and reinforcement constructions for limiting shear stresses and / or prevention of punching in concrete floors and buildings.
公开号:BE1025767B1
申请号:E2018/5732
申请日:2018-10-23
公开日:2019-07-03
发明作者:Piet Ocket
申请人:Intersig Nv；
IPC主号:

专利说明:

BE2018 / 5732
GAINING ELEMENT
TECHNICAL FIELD
The present invention relates to reinforcement elements for limiting shear stresses and / or prevention of punching in floors supported by a column, or vice versa.
TECHNOLOGICAL BACKGROUND OF THE INVENTION
The load on a floor is concentrated on the places on which the floor is based. If a floor is supported by columns, then there is a point load and associated stress concentrations. Thus large shear stresses occur in floors supported by columns. When these shear stresses exceed a critical value, the structure fails due to punching, the floor breaking around the column and then collapsing around the column.
Reinforcement elements are used to avoid punching failure in floors supported by columns. However, existing reinforcement elements do not have an optimal reinforcement function and / or require a large use of valuable construction materials.
RESUME
Thus, the present invention has for its object, inter alia, to provide reinforcement elements which have an optimum reinforcing function in floors supported by columns or vice versa, and for which only a minimal amount of valuable construction materials must be used. In particular, a reinforcing element is described herein comprising a proximal end, a distal end, at least one cross bar, and at least one longitudinal bar, wherein the at least one longitudinal bar comprises an upper longitudinal bar, and wherein the at least one cross bar is connected to the upper longitudinal bar; wherein the at least one cross bar comprises at least two slightly sloping legs and at least one highly sloping leg; wherein both the slightly inclined legs and the at least one strongly inclined leg slope up in the direction of
BE2018 / 5732 the proximal end; and wherein the slightly inclined legs make an angle α with the upper longitudinal bar that is greater than the angle β that the highly inclined legs make with the upper longitudinal bar; and characterized in that the two outer legs at the proximal end of the at least one cross bar are at least two consecutive slightly sloping legs.
In some embodiments, the reinforcing element comprises two longitudinal bars, and one and only one transverse bar, the two longitudinal bars comprising an upper longitudinal bar and a lower longitudinal bar; wherein the transverse bar is connected to the upper longitudinal bar and to the lower longitudinal bar; wherein the crossbar comprises at least two slightly sloping legs and at least one highly sloping leg; wherein both the slightly inclined legs and the at least one strongly inclined leg slope obliquely toward the proximal end; and wherein the slightly inclined legs make an angle α with the upper longitudinal bar that is greater than the angle β that the highly inclined legs make with the upper longitudinal bar; and characterized in that the two outer legs at the proximal end of the cross bar are two consecutive slightly sloping legs.
In some embodiments, the reinforcing element as described herein comprises two cross bars, both cross bars being connected to the upper longitudinal bar and / or to the lower longitudinal bar; wherein each cross bar comprises at least two slightly sloping legs and at least one highly sloping leg; wherein both the slightly inclined legs and the at least one strongly inclined leg slope obliquely toward the proximal end; and wherein the slightly inclined legs make an angle α with the upper longitudinal bar that is greater than the angle β that the highly inclined legs make with the upper longitudinal bar; and wherein the two outer legs at the proximal end of each cross bar are at least two consecutive slightly sloping legs. Preferably, the two cross bars are parallel to each other.
In some embodiments, the reinforcing element further comprises a support bar, the support bar comprising a square part and a parallel part, the square part being perpendicular to the longitudinal bars, and wherein the parallel part is parallel to the longitudinal bars.
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In some embodiments, the crossbar between the three consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other comprises several slightly sloping legs and a plurality of highly sloping legs.
In some embodiments, the cross bar is bent at multiple locations to form upper bends and lower bends, the upper bends protruding above the upper longitudinal bar, and optionally wherein the lower bends protruding below the lower longitudinal bar.
In some embodiments, the crossbar and / or the longitudinal bars are continuous.
In some embodiments, the longitudinal bars are mutually parallel within a margin of error of 1.0 °.
In some embodiments, the reinforcing element comprises two cross bars, both cross bars being connected to the upper longitudinal bar; wherein each cross bar comprises at least two slightly sloping legs and at least one highly sloping leg; wherein both the slightly inclined legs and the at least one strongly inclined leg slope obliquely toward the proximal end; and wherein the slightly inclined legs make an angle α with the upper longitudinal bar that is greater than the angle β that the highly inclined legs make with the upper longitudinal bar; and wherein the two outer legs at the proximal end of each cross bar are at least two consecutive slightly sloping legs.
In some embodiments, the reinforcing element comprises at least three substantially parallel longitudinal bars; the longitudinal bars comprising an upper longitudinal bar and two lower longitudinal bars, each lower longitudinal bar being connected to the upper longitudinal bar by means of a transverse bar.
In some embodiments, each cross bar comprises at least three slightly sloping legs and at least one highly sloping leg; and the three outer legs at the proximal end of each cross bar are three consecutive slightly sloping legs. In some embodiments, each cross bar between the three consecutive slightly sloping legs at the proximal end and the distal end comprises a plurality of slightly sloping legs and a plurality of highly sloping legs.
In some embodiments, the cross bars are bent at multiple locations to form upper bends and lower bends, the
BE2018 / 5732 upper bends protrude above the upper longitudinal bar, and optionally with the lower bends protruding below the lower longitudinal bars.
In some embodiments, the cross bars and / or the longitudinal bars are continuous.
In some embodiments, the longitudinal bars are mutually parallel within a margin of error of 1.0 °.
In some embodiments, the reinforcement element comprises a transition point between the proximal end and the distal end, the reinforcement element between the transition point and the distal end comprising further slightly inclined legs and further strongly inclined legs, the further slightly inclined legs and the further strongly inclined legs obliquely in the direction of the distal end, the slightly inclined legs making an angle α with the lower longitudinal bars that is larger than the angle β that the strongly inclined legs make with the lower longitudinal bars, and the three extreme legs on the distal are three consecutive slightly sloping legs.
In some embodiments, the strongly inclined legs make an angle β with the upper longitudinal bar that is greater than 40.0 ° and that is less than 75.0 °; and the slightly inclined legs make an angle α with the upper longitudinal rod that is less than 90.0 ° and that is at least 5.0 ° greater than the angle β between the strongly inclined legs and the upper longitudinal rod.
In some embodiments, all slightly sloping legs are mutually parallel within a margin of error of 1.0 °; and all strongly inclined legs are mutually parallel within a margin of error of 1.0 °.
Further provided herein is a method of manufacturing a reinforcing element, the method comprising the following steps:
- providing at least one longitudinal bar and at least one cross bar, wherein the at least one cross bar and the at least one longitudinal bar each comprise a proximal end and a distal end and wherein the at least one longitudinal bar comprises an upper longitudinal bar;
- folding the at least one cross bar at the proximal end to form at least two consecutive slightly sloping legs;
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- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the at least one cross bar to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching the cross bar to the upper longitudinal bar.
In some embodiments, the method includes the following steps:
- providing two longitudinal bars and a transverse bar, wherein the transverse bar and the two longitudinal bars each comprise a proximal end and a distal end, and wherein the two longitudinal bars comprise an upper longitudinal bar and a lower longitudinal bar;
- folding the cross bar at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the cross bar to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching the cross bar to the upper longitudinal bar and to the lower longitudinal bar, thus fixing the lower longitudinal bar to the upper longitudinal bar by means of the cross bar.
In some embodiments, the method includes the following steps:
- providing at least one longitudinal bar and two transverse bars, wherein the transverse bars and the longitudinal bar comprise a proximal end and a distal end, and wherein the longitudinal bar is an upper longitudinal bar;
- folding the transverse bars at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the transverse bars to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching the cross bars to the upper longitudinal bar.
In some embodiments, the method comprises the steps of:
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- providing three longitudinal bars and two transverse bars, wherein the transverse bars and the longitudinal bars comprise a proximal end and a distal end, and wherein the three longitudinal bars comprise an upper longitudinal bar and two lower longitudinal bars;
- folding the transverse bars at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the transverse bars to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching each lower longitudinal bar to the upper longitudinal bar using one of the transverse bars.
In some embodiments, at least three consecutive slightly sloping legs are formed when the cross bars are bent at the proximal end. Further provided herein is a reinforcement structure for limiting shear stresses and / or for the prevention of punching in a concrete floor, the reinforcement structure comprising at least two reinforcement elements as described herein, and wherein the at least two reinforcement elements are arranged substantially parallel or rotationally symmetrically.
In some embodiments, the at least two reinforcement elements comprise two or more opposite reinforcement elements; and the proximal ends of the two opposite reinforcing elements are connected to each other via a bracket.
In some embodiments, the reinforcement structure is embedded in a hardened cement-containing material.
In some embodiments, the concrete floor rests on the column or the column rests on the concrete floor.
Further provided herein is the use of a reinforcing element as described herein to limit shear stresses and / or to prevent punching in a concrete floor resting on a column or in a concrete floor on which a column rests.
BE2018 / 5732
DESCRIPTION OF THE FIGURES
The description below of the figures relates to specific embodiments of the present invention, and is only given as an example. This description is not limitative with respect to the matter described herein, its uses, or its use. In the figures, identical reference marks are used to refer to identical or similar devices or components.
Figures 1 (A-C), 2, 3 (A-B) and 7-9 each show a side view of the proximal end (110) of an embodiment of a reinforcing element (100).
Figure 4 shows a top view of the proximal end (110) of a reinforcing element (100).
Figure 5 shows a side view of the distal end (120) of a reinforcing element (100).
Figure 6 (A-E) shows a front view of a reinforcement element (100) looking at the proximal end (110).
Figure 10 (A-B) shows a top view of reinforcement elements (100) arranged around a column (600).
Figure 11 (A-B) shows a side view of two opposing reinforcement elements (100) arranged around a column (600).
Figure 12 shows a reinforcement element (100) wherein the structure of the reinforcement element (100) is mirrored around a transition point (130).
Figure 13 shows a reinforcement element (100) with the proximal ends of the reinforcement element (100) connected to each other.
Figure 14 shows four views in panels a) to d) of an embodiment of a reinforcing element (100).
Figure 15 shows how two reinforcement elements (101, 102), a first reinforcement element (101) and a second reinforcement element (102) are arranged one behind the other.
Figure 16 shows how different reinforcement elements (103, 104, 105) are placed side by side to form a stack (140).
Figure 17 shows a side view of an arrangement of reinforcement elements (100).
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Figure 18 (A-B) shows a reinforcing element (100) as described in Figure 14 including two cross bars.
The following reference characters are used in the description and in the figures: 100 gain element; 101 - reinforcement element; 102 gain element; 103 - reinforcement element; 104 - reinforcement element; 105 - reinforcement element; 110 - proximal end of the reinforcement element; 120 - distal end of the reinforcement element; 130 - transition point; 140 - stack of reinforcement elements; 210 - upper longitudinal bar; 220 - lower longitudinal bar; 300 - cross bar; 310 - slightly sloping leg; 311 - consecutive slightly sloping legs; 315 - slightly sloping leg between the transition point and the distal end; 316 - three consecutive slightly sloping legs at the distal end; 320 - strong sloping leg; 321 - consecutive strongly sloping legs; 325 - strongly inclined leg between the transition point and the distal end; 330 - upper bend; 340 lower bend; 400 - support bar; 410 - square part; 420 - parallel part; 500 - bracket; 510 - inwardly bent end; 520 - outwardly bent end; 530 - elongated inner part; ; 600 column; α - angle between slightly sloping leg and lower long bar; β - angle between strongly sloping leg and lower longitudinal bar.
DETAILED DESCRIPTION
As used further in this text, the singular forms "one," "the," "the," include both the singular and the plural unless the context is clearly different.
The terms "include", "includes" as used further are synonymous with "inclusive", "include" or "contain," contain "and are inclusive or open and do not exclude additional, unnamed members, elements or method steps. When in this description reference is made to a product or process that "comprises" certain characteristics, parts or steps, this refers to the possibility that other characteristics, parts or steps are also present, but embodiments may also be provided that only have the listed characteristics , parts or steps.
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The enumeration of numerical values based on numerical ranges includes all values and fractions in these ranges, as well as the cited endpoints.
The term "about" as used when referring to a measurable value such as a parameter, a quantity, a duration, and so on, is intended to encompass variations of +/- 10% or less, preferably +/- 5% or less, more preferably +/- 1% or less, and even more preferably +/- 0.1% or less, from and from the specified value, as far as the variations apply to function in the disclosed invention. It is to be understood that the value to which the term "approximately" refers per se has also been disclosed.
All references cited in this description are hereby incorporated by reference in their entirety.
Unless defined otherwise, all terms disclosed in the invention, including technical and scientific terms, have the meaning as those skilled in the art usually understand them. As a further guide, definitions are included for further explanation of terms used in the description of the invention.
Provided for this is a reinforcing element. The reinforcement element is suitable for limiting shear stresses and / or preventing punching in a concrete floor. Current, but not mandatory, the present reinforcement elements are used in predal elements, also called formwork slab floors or wide slab floors. A predal element is a cantilevered system floor and consists of, for example, a thickness of 50 mm, flat rectangular elements made of prefab concrete with continuous lattice girders. In some embodiments, a predal element is placed on and / or around a column, and the predal element comprises additional reinforcement in the form of additional reinforcing bars that are placed on top of the column around which the predal element rests, and that are placed between diametrically opposite to mutually reinforcing elements. The reinforcement elements, the net, and the additional reinforcing bars are embedded in concrete. Along this concrete, the forces on the upper longitudinal bar are transferred to the additional reinforcing bars, which in turn transfer these forces to opposite reinforcing elements.
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In some embodiments, the additional reinforcing bars are connected to the diametrically opposed reinforcing elements.
In some embodiments, the additional reinforcing bars are not connected to the diametrically opposed reinforcing elements.
The height of the bends is preferably the same, that is the height of the projecting loops, less than or equal to the thickness of the net which lies on the reinforcement elements in a predal element.
In some embodiments, the net consists of one layer of bars. In some embodiments, the net consists of two layers of bars. In some embodiments, the bars in the layer of bars have a thickness between 6.0 mm and 50.0 mm, or a thickness between 8.0 mm and 25.0 mm, or a thickness between 10.0 mm and 15.0 mm, or a thickness between 11.0 mm and 13.0 mm.
Preferably, the predal element also comprises a net that lies below the reinforcement elements. The net underneath the reinforcement elements is similar to the net described above, and may have the same or different characteristics. Optionally, the reinforcement element has bends protruding below the lower longitudinal bar or below the lower longitudinal bars (see elsewhere in this text). In this case, the height of these bends is preferably less than or equal to the thickness of the net that lies below the reinforcement elements in the predal element.
The reinforcement element comprises a proximal end and a distal end. The proximal end and the distal end are opposite ends of the reinforcement element. For example, the proximal end is placed in normal use adjacent to a support point in a floor where the floor rests on a column.
The reinforcing element comprises at least one cross bar and at least one longitudinal bar. The at least one longitudinal bar comprises an upper longitudinal bar, and the at least one transverse bar is connected to the upper longitudinal bar, for example by means of welded connections.
The at least one cross bar comprises at least two slightly sloping legs and at least one strongly sloping leg.
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Both slightly sloping legs and highly sloping legs slope obliquely towards the proximal end. In other words, the distance between a particular leg and the proximal end is smaller at the height of the upper longitudinal bar than at a certain distance from the upper longitudinal bar.
In some embodiments, the reinforcing element comprises an upper longitudinal bar and a lower longitudinal bar. In these embodiments, the distance between a particular leg and the proximal end is smaller at the level of the upper longitudinal bar than at the level of the lower longitudinal bar.
Both the slightly sloping legs and the at least one strongly sloping leg rise obliquely in the direction of the proximal end. The slightly sloping legs make an angle α with the upper longitudinal bar that is larger than the angle β that the highly sloping legs make with the upper longitudinal bar. In other words, the slightly sloping legs make an angle with the upper longitudinal bar that is greater than the angle that the highly sloping legs make with the upper longitudinal bar.
The two outer legs at the proximal end of the crossbar are two consecutive slightly sloping legs. In other words, the two extreme legs at the proximal end are slightly sloping legs. The extreme legs at the proximal end are the legs closest to the proximal end of the reinforcement element. In other words, the extreme legs at the proximal end are the last legs at the proximal end.
The provision of two consecutive slightly sloping legs at the proximal end limits shear stresses and / or increases the resistance to punching of a floor, for example a concrete floor, in which the reinforcing element is incorporated.
These two consecutive slightly sloping legs are preferably followed in the direction of the distal end by a strongly sloping leg.
These reinforcement elements are very effective in reducing shear stresses and / or preventing punching, for example in concrete floors resting on a column.
In some embodiments, the two outer legs at the proximal end of the crossbar are two consecutive slightly sloping legs that are immediately followed towards the distal end by a highly sloping leg. Bee
BE2018 / 5732, in these embodiments, these two consecutive slightly sloping legs are made from discontinuous pieces of steel wire. This facilitates the production of such reinforcement elements.
The production of the reinforcement elements can be further facilitated by providing exactly three consecutive slightly sloping legs. Thus, in some embodiments, the three outer legs at the proximal end of the crossbar are three consecutive slightly sloping legs that are immediately followed towards the distal end by a highly sloping leg. These three consecutive slightly sloping legs are preferably made from a continuous steel wire. This facilitates the production of such reinforcement elements. In some embodiments, the at least one cross bar comprises a plurality of slightly sloping legs and a plurality of highly sloping legs between the at least two consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other. In other words, the consecutive slightly sloping legs at the proximal end are followed by several slightly sloping legs and several highly sloping legs. In this way a reinforcement element with a certain length is obtained.
In some embodiments, the at least one cross bar comprises a plurality of legs consisting of alternately one slightly sloping leg and one strongly sloping leg disposed between the at least two consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other. In other words, the consecutive slightly sloping legs at the proximal end are followed by alternately one strongly sloping leg and one slightly sloping leg.
In some embodiments, the strongly inclined legs make an angle β with the upper longitudinal bar that is greater than 40.0 ° and that is less than 75.0 °. The slightly inclined legs make an angle α with the upper longitudinal bar that is smaller than 90.0 ° and that is at least 5.0 ° greater than the angle β between the strongly inclined legs and the upper longitudinal bar. This improves the mechanical properties of the present reinforcement elements.
The longitudinal bars are preferably parallel. In this case, the angle between the slightly inclined legs and the lower longitudinal bars is equal to the angle between the slightly inclined legs and the upper longitudinal rod. Also the angle between the strong
BE2018 / 5732 inclined legs and the lower longitudinal bars then equal to the angle between the strongly inclined legs and the upper longitudinal rod.
In some embodiments, the angle β that the strongly inclined legs make with the upper longitudinal bar is greater than 35.0 °, and less than 60.0 °, or greater than 40.0 ° and less than 50.0 °.
In some embodiments, the angle α that the slightly sloping legs make with the upper longitudinal bar is between 70.0 ° and 90.0 °, or between 75.0 ° and 89.0 °, or between 80.0 ° and 88.0 °.
In some embodiments, the angle between the slightly inclined legs and the upper longitudinal bar is at least 10.0 °, or 15.0 °, or 20.0 °, or 25.0 °, or 30.0 °, or 40.0 °, or 50.0 ° greater than the angle between the highly inclined legs and the upper longitudinal bar.
In some embodiments, all slightly sloping legs are mutually parallel within a margin of error of 10.0 °, 5.0 °, 1.0 °, or 0.1 °. Also in these embodiments, all strongly inclined legs are preferably mutually parallel within a margin of error of 10.0 °, 5.0 °, 1.0 °, or 0.1 °.
In some embodiments, the at least one crossbar and / or the at least one longitudinal bar have a diameter between 1.0 mm and 20.0 mm, for example a diameter of 2.0 to 18.0 mm, or a diameter of 3.0 mm to 16.0 mm, or a diameter of 4.0 to 14.0 mm, or a diameter of 5.0 mm to 13.0 mm, or a diameter of 6.0 to 12.0 mm. Larger diameters give the reinforcement elements better strength at the expense of additional material use. Smaller diameters allow less material use at the expense of reduced strength.
Preferably, the longitudinal bars and the transverse bars are made of steel, carbon, or a composite material such as glass fiber reinforcement (e.g. Vrod®, Aslan®, Combar®).
In some embodiments, each crossbar between the consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other comprises several legs consisting of alternately one slightly sloping leg and one highly sloping leg. In other words, the consecutive light becomes
BE2018 / 5732 inclined legs at the proximal end followed by alternately one strongly inclined leg and one slightly inclined leg.
In some embodiments, each cross bar between the consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other comprises multiple legs consisting of alternately one slightly sloping leg and a plurality of consecutive highly sloping legs, e.g. 2, 3, or more consecutive highly sloping legs. In other words, the consecutive slightly sloping legs at the proximal end are followed by alternately several consecutive strongly sloping legs, for example 2, 3, or more consecutive strongly sloping legs, and one slightly sloping leg.
In some embodiments, each cross bar between the consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other comprises several legs consisting of alternately one strongly sloping leg and a plurality of consecutive slightly sloping legs, e.g. 2, 3, or more consecutive slightly sloping legs. In other words, the consecutive slightly sloping legs at the proximal end are followed by alternately one strongly sloping leg and a plurality of consecutive slightly sloping legs, for example 2, 3, or more consecutive slightly sloping legs.
In some embodiments, each crossbar between the consecutive slightly sloping legs at the proximal end on the one hand and the distal end on the other comprises several legs consisting of alternating multiple consecutive slightly sloping legs and multiple consecutive highly sloping legs. In other words, the consecutive slightly sloping legs at the proximal end are followed by alternating multiple consecutive strongly sloping legs and multiple consecutive slightly sloping legs. The number of consecutive sloping legs is, for example, 2, 3, or more.
These various variations of the structure of the present reinforcement elements allows the adaptation of the present reinforcement elements to the needs of specific applications.
In some embodiments, the reinforcing element comprises two longitudinal bars and one and only one transverse bar. In other words, the reinforcing element in these embodiments comprises one cross bar, and no more than
BE2018 / 5732 one cross bar. The two longitudinal bars comprise a lower longitudinal bar and an upper longitudinal bar. The transverse bar is connected to the upper longitudinal bar and to the lower longitudinal bar, for example by means of welded connections. Thus, the upper longitudinal bar and the lower longitudinal bar are connected to each other by means of the transverse bar.
In some embodiments, the reinforcing element as described herein comprises two cross bars, both cross bars being connected to the upper longitudinal bar and / or to the lower longitudinal bar; wherein each cross bar comprises at least two slightly sloping legs and at least one highly sloping leg; wherein both the slightly inclined legs and the at least one strongly inclined leg slope obliquely toward the proximal end; and wherein the slightly inclined legs make an angle α with the upper longitudinal bar that is greater than the angle β that the strongly inclined legs make with the upper longitudinal bar; and wherein the two outer legs at the proximal end of each cross bar are at least two consecutive slightly sloping legs. Preferably, the two cross bars are parallel to each other.
The cross bar comprises at least two slightly sloping legs and at least one strongly sloping leg.
In some embodiments, the reinforcing element comprises two and no more than two longitudinal bars: an upper longitudinal bar and a lower longitudinal bar.
In some embodiments, the reinforcing element further comprises a support bar. The support rod comprises a square part and a parallel part. The square part is perpendicular to the longitudinal bars, for example within a margin of error of less than 10.0 °, or less than 5.0 °, or less than 1.0 °, or less than 0.1 °. The parallel part is parallel to the longitudinal bars, for example within a margin of error of less than 10.0 °, or less than 5.0 °, or less than 1.0 °, or less than 0.1 °.
The support rod supports the reinforcement element, so that the reinforcement element can easily be set upright, for example during placement.
In some embodiments, the support bar is a spur of the lower longitudinal bar. This simplifies the construction of the reinforcement element.
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In some embodiments, the support bar is a spur of the lower longitudinal bar at the proximal end, and the parallel part of the support bar is pleated away from the proximal end and toward the distal end. Additionally or alternatively, a spur of the lower longitudinal bar is pleated at the distal end to form a support bar. In this case, the parallel portion of the support rod is pleated away from the distal end and toward the proximal end.
In some embodiments, the support bar has a thickness that is equal to the thickness of the lower longitudinal bar.
In some embodiments, the reinforcing element comprises a plurality of support bars, for example, 2, 3, or 4 support bars. This can further simplify the placement of a reinforcement element.
In some embodiments, the crossbar comprises three consecutive slightly sloping legs at the proximal end.
In some embodiments, the cross bar is bent at multiple locations to form upper bends and lower bends. The upper bends protrude above the upper longitudinal bar. Because the upper bends protrude above the upper longitudinal bar, a better transfer of the forces from the transverse bars to the upper longitudinal bar and to the material in which the reinforcing element is embedded is created. This increases the strength of floors in which the present reinforcement element is used.
Preferably, the bends are shaped as circular sectors, and the diameter of the circular sectors is at least 5 times the diameter of the crossbar. Optionally, the lower bends protrude under the lower longitudinal bar.
In some embodiments, the lower bends protrude 0.5 to 5.0 cm, or 1 to 2.5 cm below the lower longitudinal bars and / or the upper bends protrude 0.5 to 10.0 cm, or 1 to 5 cm above the upper longitudinal bars. When the bends extend below or above a longitudinal bar over a distance that is greater than the average of the diameters of the longitudinal bar and the transverse bar, an opening is formed between the longitudinal bar and the transverse bar.
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When the bends protrude above the upper longitudinal bar and / or below the lower longitudinal bar, the transverse bar crosses the upper longitudinal bar and / or the lower longitudinal bar at two positions per bend. Preferably the cross bar is welded to the longitudinal bars at the places where the cross bar crosses the longitudinal bars.
In some embodiments, the cross bar is continuous. In other words, in some embodiments, the crossbar is continuous.
In some embodiments, the longitudinal bars are continuous. In other words, in some embodiments, the longitudinal bars are continuous.
In some embodiments, both the cross bar and the longitudinal bars are continuous. In other words, in some embodiments, the longitudinal bars and the crossbar are continuous.
In some embodiments, the transverse bars are interrupted in the bends, where the bends protrude above the upper longitudinal bar or below the lower longitudinal bar. In some embodiments, the interrupted bends are shaped like a hook. In this way a simple connection can be made with reinforcement nets and / or additional reinforcement bars.
In some embodiments, the cross bars are realized as a plurality of individual bars. In other words, the cross bars are realized as separate bars. Each individual bar forms an individual leg. The individual legs are attached, preferably welded, to the upper longitudinal bar and the lower longitudinal bar.
Preferably, the longitudinal bars, that is the upper longitudinal bar and the lower longitudinal bar, are mutually parallel within a margin of error of 1.0 °. This improves the uniformity of the mechanical properties of the reinforcement element.
In some embodiments, the reinforcing element comprises two cross bars and at least one longitudinal bar, the at least one longitudinal bar being an upper longitudinal bar. In other words, in some embodiments, the reinforcing element comprises two cross bars and an upper longitudinal bar. Both cross bars are connected to the upper longitudinal bar.
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Each cross bar comprises at least two slightly sloping legs and at least one strongly sloping leg. Both the slightly sloping legs and the at least one strong sloping leg slope up towards the proximal end. In other words, both the strongly inclined legs and the slightly inclined legs are inclined towards the proximal end.
The slightly sloping legs make an angle α with the upper longitudinal bar that is larger than the angle β that the highly sloping legs make with the upper longitudinal bar. The two outer legs at the proximal end of each cross bar are at least two consecutive slightly sloping legs. The two outer legs at the proximal end of each cross bar are also the legs that are closest to the proximal end of the reinforcing element. In other words, the extreme legs at the proximal end are the last legs at the proximal end.
In another embodiment, the reinforcing element comprises three longitudinal bars: an upper longitudinal bar and two lower longitudinal bars. The three longitudinal bars are preferably arranged as the longitudinal ribs of a triangular prism. Preferably the three longitudinal bars are continuous. In other words, the three longitudinal bars are preferably continuous. As already mentioned above, in some embodiments the reinforcing element comprises two cross bars. Each cross member connects the upper longitudinal member with one of the lower longitudinal members. In other words, a first transverse bar connects the upper longitudinal bar with the first lower longitudinal bar, and a second transverse bar connects the upper longitudinal bar with the second lower longitudinal bar. Each cross bar is thus connected to the upper longitudinal bar and one of the lower longitudinal bars. The lower longitudinal bars can be connected either on the inside or on the outside of the cross bars.
In some embodiments, the reinforcing element comprises at least three substantially parallel longitudinal bars; the longitudinal bars comprising an upper longitudinal bar and two lower longitudinal bars, each lower longitudinal bar being connected to the upper longitudinal bar by means of a transverse bar.
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Preferably, the longitudinal bars are mutually parallel within a margin of error of 5.0 °, 1.0 °, 0.5 °, or 0.1 °. This improves the uniformity of the mechanical properties of the reinforcement element.
Preferably, the distance between the upper longitudinal bar and the first lower longitudinal bar is equal to the distance between the upper longitudinal bar and the second lower longitudinal bar. Thus, the cross-section of the reinforcement element in these embodiments is an isosceles triangle. Such reinforcing elements have improved mechanical properties due to their symmetrical construction.
In a specific embodiment of the reinforcement element as described herein, the cross section of the reinforcement element in these embodiments is a blunt triangle. Such reinforcement elements provide improved mechanical properties.
As stated earlier, each cross bar at the proximal end comprises at least two consecutive slightly sloping legs. In some embodiments, the number of slightly inclined legs at the proximal end is odd, for example, equal to 3, 5, 7, 8, or more. In some embodiments, each cross bar comprises at least three slightly sloping legs and at least one highly sloping leg. In these embodiments, the three outer legs at the proximal end of each cross bar are three consecutive slightly sloping legs.
In other words, each cross bar at the proximal end ends in at least two slightly sloping legs, preferably an odd number of slightly sloping legs, more preferably three slightly sloping legs. In another way said, the at least two outer legs at the proximal end are at least two consecutive slightly sloping legs. Preferably, an odd number of outer legs at the proximal end are an odd number of slightly sloping legs. More preferably, the three outer legs at the proximal end are at least three consecutive slightly sloping legs.
Preferably, the cross bars are bent at a plurality of locations at the lower longitudinal bars and the upper longitudinal bar to form bends, lower bends at the lower longitudinal bars, and upper bends at the upper longitudinal bar. More preferably the
BE2018 / 5732 upper bends protrude above the upper longitudinal bar, and / or the lower bends protrude below the lower longitudinal bars. Because the upper bends protrude above the upper longitudinal bar, a better transfer of the forces from the cross bars to the upper longitudinal bar and to the concrete results. This increases the strength of floors in which the present reinforcement construction is used.
In some embodiments, the lower bends project 0.0 to 7.0 cm, or 0.5 to 2.5 cm below the lower longitudinal bars and / or the upper bends project 0 to 7.0 cm, or 0.5 to 2.5 cm above the upper longitudinal bars. When the bends extend below or above longitudinal bars over a distance that is greater than the average of the diameters of the longitudinal bars and the transverse bars, an opening is formed between the longitudinal bars and the transverse bars.
When the bends protrude above the upper longitudinal bars and / or below the lower longitudinal bars, the transverse bars intersect at two positions per bend. The cross bars are preferably welded to the longitudinal bars at the places where the cross bars cross the longitudinal bars.
In some embodiments, the cross bars and / or the longitudinal bars are continuous. In other words, in some embodiments, the cross bars and / or the longitudinal bars are continuous. This facilitates the construction of the reinforcement elements and gives good mechanical strength.
In some embodiments, the cross bars are interrupted in the bends, where the bends protrude above the upper longitudinal bar or below a lower longitudinal bar. In some embodiments, the interrupted bends are shaped like a hook. In this way a simple connection can be made with reinforcement nets and / or additional reinforcement bars.
In some embodiments, the cross bars are realized as a plurality of individual bars. In other words, the cross bars are realized as separate bars. Each individual bar forms an individual leg, and wherein the individual legs are attached, preferably welded, to the upper longitudinal bar and one of the lower longitudinal bars.
In some embodiments, the longitudinal bars are mutually parallel within a margin of error of 1.0 °.
BE2018 / 5732
In some embodiments, the reinforcement element comprises a transition point between the proximal end and the distal end. Between the transition point and the proximal end, the reinforcing element has a structure as described above. Between the transition point and the distal end, the reinforcing element has a structure that is a mirror image of the structure between the transition point and the proximal end. In other words, between the transition point and the distal end, both the slightly inclined legs and the strongly inclined legs run obliquely in the direction of the distal end. The slightly sloping legs make an angle α with the upper longitudinal bar that is larger than the angle β that the highly sloping legs make with the upper longitudinal bar. The angle α is preferably equal to the aforementioned angle α that the slightly sloping legs make with the upper longitudinal bar between the transition point and the proximal end. The angle β is preferably equal to the angle β that the strongly inclined legs make with the upper longitudinal bar between the transition point and the proximal end. The three outer legs at the distal end are three consecutive slightly sloping legs. In other words, the cross bars at the distal end are pleated to form three consecutive slightly sloping legs. Such a reinforcing element is particularly useful when a floor is to be reinforced in the vicinity of two columns. By placing a reinforcing element according to this example between the columns, the resistance to punching is simultaneously increased around the two columns.
In some embodiments, all slightly sloping legs are mutually parallel within a margin of error of 1.0 °; and / or all strongly inclined legs are mutually parallel within a margin of error of 1.0 °.
Further provided herein is a method of manufacturing a reinforcing element. The reinforcing element is preferably a reinforcing element as provided herein. In a specific embodiment, the method comprises the following steps:
- providing at least one longitudinal bar and at least one cross bar, wherein the at least one cross bar and the at least one longitudinal bar each comprise a proximal end and a distal end and wherein the at least one longitudinal bar comprises an upper longitudinal bar;
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- folding the at least one cross bar at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the at least one cross bar to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching the cross bar to the upper longitudinal bar.
Further provided herein is a further method of manufacturing a reinforcing element. The reinforcing element is preferably a reinforcing element as described above.
The method comprises providing two longitudinal bars and a transverse bar. The two longitudinal bars comprise an upper longitudinal bar and a lower longitudinal bar. The cross bar, the lower longitudinal bar, and the upper longitudinal bar include a proximal end and a distal end. The distal and proximal ends of the transverse bars and the longitudinal bars correspond to the ends placed at the distal and proximal ends of the reinforcing element, respectively.
The cross bar is folded at the proximal end to form at least two consecutive slightly sloping legs.
Further towards the distal end with respect to the at least two consecutive slightly sloping legs, the cross bar is folded to form at least one strongly sloping leg, and optionally to form one or more slightly sloping legs. Preferably, the crossbar is further folded toward the distal end with respect to the at least two consecutive slightly sloping legs to form alternately one highly sloping leg and one slightly sloping leg. Exactly how the crossbar is folded depends on the desired configuration of the reinforcing element.
The folding of the crossbar preferably takes place consecutively. In other words, the folding of the cross bar is preferably done by folding.
BE2018 / 5732
In addition, it is also possible to make a reinforcing element as provided herein by separating the longitudinal bars, the cross bar, and optionally the support bar, and then welding them together.
Furthermore, the cross bar is also attached to the upper longitudinal bar and to the lower longitudinal bar, for example by welding. Thus, the lower longitudinal bar and the upper longitudinal bar are attached to each other with the aid of the transverse bar.
The cross bar is preferably welded to the longitudinal bars at the places where the cross bar crosses a longitudinal bar.
In some embodiments, all bends are first folded into the crossbar before attaching the crossbar to the longitudinal bars. But it is also possible that one or more pleats and one or more fastening operations alternate.
In some embodiments, the method further comprises crimping a support bar. The support bar is preferably an extension of the lower longitudinal bar. In other words, the support rod and the lower longitudinal rod are preferably made from one and the same rod. The support rod comprises a square part and a parallel part. The square part is folded so that it is perpendicular to the longitudinal bars, for example within a margin of error of less than 10.0 °, or less than 5.0 °, or less than 1.0 °, or less than 0.1 °. The parallel part is pleated so that it is parallel to the longitudinal bars, for example within a margin of error of less than 10.0 °, or less than 5.0 °, or less than 1.0 °, or less than 0.1 °.
Further provided herein is an alternative method of manufacturing a reinforcing element. The reinforcing element is preferably a reinforcing element as provided herein. In a specific embodiment, the method comprises the following steps:
- providing at least one longitudinal bar and two transverse bars, wherein the transverse bars and the longitudinal bar comprise a proximal end and a distal end, and wherein the longitudinal bar is an upper longitudinal bar;
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- folding the transverse bars at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the transverse bars to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching the cross bars to the upper longitudinal bar.
The method preferably comprises the provision of three longitudinal bars and two transverse bars. The cross bars and the longitudinal bars have a proximal end and a distal end. The distal and proximal ends of the transverse bars and the longitudinal bars correspond to the ends placed at the distal and proximal ends of the reinforcing element, respectively. At the proximal end of the cross bars, the cross bars are folded to form three consecutive slightly sloping legs. Further to the distal end, the cross bars are pleated to form at least one strongly inclined leg and optionally one or more slightly inclined legs, preferably to form both slightly inclined legs and strongly inclined legs. Exactly how the cross bars are folded depends on the desired appearance of the reinforcement element.
In these embodiments, the method further comprises the step of attaching each lower longitudinal bar to the upper longitudinal bar using one of the transverse bars. In other words, the method comprises the step of attaching the transverse bars to the longitudinal bars. Each cross bar is attached to the upper longitudinal bar and to one of the lower longitudinal bars. The cross bars are preferably fixed to the longitudinal bars by means of welding. The cross bars are preferably welded to the longitudinal bars at the places where the cross bars cross the longitudinal bars. In some embodiments, all bends are first folded into the cross bars before securing the cross bars to the longitudinal bars. But it is also possible that one or more pleats and one or more fastening operations alternate.
In some embodiments, the method comprises the steps of:
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- providing three longitudinal bars and two transverse bars, wherein the transverse bars and the longitudinal bars comprise a proximal end and a distal end, and wherein the three longitudinal bars comprise an upper longitudinal bar and two lower longitudinal bars;
- folding the transverse bars at the proximal end to form at least two consecutive slightly sloping legs;
- further towards the distal end with respect to the at least two consecutive slightly sloping legs: folding the transverse bars to form at least one strongly sloping leg and optionally one or more slightly sloping legs;
- attaching each lower longitudinal bar to the upper longitudinal bar using one of the transverse bars.
In some deformations, at least three consecutive slightly sloping legs are formed when the cross bars are bent at the proximal end.
In some embodiments, the transverse bars are pleated to form alternately one slightly sloping leg and one strongly sloping leg. In some embodiments, the transverse bars are folded to form alternately one slightly sloping leg and a plurality of consecutive highly sloping legs. In some embodiments, the transverse bars are pleated to form alternately one strongly inclined leg and a plurality of consecutive slightly inclined legs. In some embodiments, the transverse bars are folded to form alternately a plurality of consecutive slightly inclined legs and a plurality of consecutive strongly inclined legs. The number of consecutive sloping legs is, for example, 3. The folding of the cross bars is preferably consecutive, that is folding per folding.
In addition, it is also possible to make a reinforcing element as provided herein by making the pleated pieces separate and then welding them to the longitudinal bars.
Furthermore, a reinforcement construction is provided for limiting shear stresses and / or for limiting punch in a concrete floor. The reinforcement structure comprises at least two reinforcement elements as provided herein. The at least two reinforcement elements are preferably substantially
BE2018 / 5732 arranged parallel or rotationally symmetrically. When the reinforcement elements are arranged rotationally symmetrically, the reinforcement elements are preferably arranged rotationally symmetrically around a support point. A support point is a point where a floor rests on a column, or where a column rests on a floor.
In another specific embodiment, the at least two reinforcement elements are arranged radially and / or rotationally symmetrically around a central point. During normal use of the reinforcement construction in a concrete floor to limit shear stresses and / or punch prevention, the central point corresponds to a point where the concrete floor is supported by a column or where the column rests on the concrete floor.
The reinforcement construction preferably comprises more than two reinforcement elements, such as 3, 4, 5, 6, 8, 10, 20, 30, or more reinforcement elements.
The proximal ends of the at least two reinforcement elements face the central point. In other words, the distance between the proximal ends of the reinforcement elements and the central point is smaller than the distance between the distal ends of the reinforcement elements and the central point.
In some embodiments, the proximal ends of opposite reinforcement elements are connected to each other via a bracket. A bracket is a tool for connecting opposite reinforcement elements. The bracket is preferably manufactured from a steel bar by means of 1 or more, for example 2 bending operations. Opposite reinforcement elements are reinforcement elements rotated around the center point through an angle of 180.0 °, within a margin of error of 60.0 ° or 50.0 ° or 40.0 ° or 30.0 ° or 20.0 ° or 10.0 ° or 5.0 ° or 1.0 ° or 1.0 °.
In some embodiments, the bracket includes an inwardly bent end, an outwardly bent end, and elongated inner member. In these embodiments, the bracket is secured with two opposite reinforcing elements by means of the inwardly bent end and the outwardly bent end.
BE2018 / 5732
As intended herein, an object is "elongated" when the length of that object is longer than twice the width of that object; preferably the length is longer than three, four, or five times the width of the object.
In some embodiments, the bracket is connected to the proximal end of the opposite reinforcement elements by means of a mechanical connection.
The length of the elongated inner part corresponds to the length between the opposite reinforcement elements.
The inwardly bent end is an end of the bracket where the bracket is bent over an angle between 100.0 ° and 170.0 °, for example an angle between 120.0 ° and 160.0 °, or between 120.0 ° and 145 °, or between 145.0 ° and 160.0 °. In some embodiments, the inwardly bent end has a length between 10.0 cm and 30.0 cm.
The outwardly bent end is the end of the bracket that is opposite to the inwardly bent end. The outwardly bent end is bent at an angle between 10.0 ° and 80.0 °, for example between 30.0 ° and 60.0 °, or between 30.0 ° and 45.0 °, or between 45.0 ° and 60.0 °.
In an alternative embodiment, the proximal ends of opposite reinforcing elements are connected to each other by connecting the upper longitudinal bars to each other, for example by passing the upper longitudinal bar through. In other words, the opposite reinforcement elements share the same upper longitudinal bar in this embodiment.
In some embodiments, the reinforcement structure further comprises an upper reinforcement layer and a lower reinforcement layer. The upper reinforcement layer and the lower reinforcement layer comprise one or more reinforcement nets. At least two reinforcement elements are arranged between the upper reinforcement layer and the lower reinforcement layer.
Further provided herein is a floor comprising a reinforcement structure as described above. The floor is preferably a concrete floor. The
BE2018 / 5732 reinforcement construction is embedded in a hardened cement-containing material. The hardened cementitious material is preferably concrete.
Further provided herein is a building comprising one or more columns and a floor as described above. The floor rests on one or more columns. Alternatively or additionally, one or more columns may rest on the floor. Each column is placed below or above a central well around which the reinforcement elements are arranged.
Further provided herein is the use of a reinforcing element as provided herein for limiting shear stresses and / or for the prevention of punching in a concrete floor resting on a column or in a concrete floor on which a column rests.
BE2018 / 5732
EXAMPLES
Example 1
In a first example, reference is made to Figs. 1 (A-C), FIG. 2, FIG. 3 (A-B), FIG. 4, FIG. 5 and FIG. 6 (A-E). These figures show a reinforcement element (100). The reinforcement element (100) comprises a proximal end (110) and a distal end (120). The proximal end (110) and the distal end (120) are located at opposite ends of the reinforcing element (100). During normal use, the reinforcement element (100) is placed in a concrete floor, with the proximal end (110) adjacent to a point where the concrete floor rests on a column.
In particular, FIG. 1 (A-C), FIG. 2 and FIG. 3 (A-B) a side view of a reinforcing element (100) in the vicinity of the proximal end (110). FIG. 4 shows a top view of the reinforcement element (100) in the vicinity of the proximal end (110). FIG. 5 shows a side view of the reinforcement element (100) in the vicinity of the distal end (120). FIG. 6 (A-E) shows a front view of the reinforcement element (100) looking at the proximal end (110). A rear view of the reinforcement element (100) looking at the distal end (120) looks similar.
The reinforcing element comprises an upper longitudinal bar (210), optionally two lower longitudinal bars (220), and two transverse bars (300). The longitudinal bars (210, 220) run in the longitudinal direction of the reinforcement element (100). Each cross bar (300) winds between the upper longitudinal bar (210) and optionally a lower longitudinal bar (220) to form legs (310,320). Between consecutive legs (310,320), the cross bars (300) are bent to form bends (330,340): upper bends (330) and lower bends (340). Each lower bend (340) projects below one of the lower longitudinal bars (220). Each upper bend (330) protrudes above the upper longitudinal bar (210). Thus, the cross bars (300) intersect the longitudinal bars (210, 220) at the level of the bends (330,340). At the position where the cross bars (300) cross the longitudinal bars (210.220), the cross bars (300) are welded to the longitudinal bars (210.220).
BE2018 / 5732
Each cross bar comprises slightly sloping legs (310) and highly sloping legs (320). Both the slightly inclined legs (310) and the strongly inclined legs (320) are inclined toward the proximal end (110) of the reinforcing element (100). The slightly sloping legs (310) make an angle α with the longitudinal bars (210, 220) that is equal to 85 °. The strongly inclined legs (320) make an angle β with the longitudinal bars (210, 220) that is equal to 55 °. Because the longitudinal bars are parallel, the angle between the slightly inclined legs and the lower longitudinal bars is equal to the angle between the slightly inclined legs and the upper longitudinal bar. Also the angle between the strongly inclined legs and the lower longitudinal bars is equal to the angle between the strongly inclined legs and the upper longitudinal rod.
At both the proximal end (110) and the distal end (120), the longitudinal bars (210, 220) and the transverse bars (300) terminate. At the proximal end (110), the cross bars (300) are folded to form at least two and preferably three consecutive slightly sloping legs (311).
These at least two and preferably three consecutive slightly sloping legs (311) limit shear stresses and / or increase the resistance to punching of a concrete floor in which the reinforcing element (100) is placed. The at least two and preferably three consecutive slightly sloping legs (311) are parallel to each other. The mutual distance between the three consecutive slightly sloping legs (311) is approximately 3 to 5 times the diameter of the legs.
More towards the distal portion (120), strongly inclined legs (320) and slightly inclined legs (310) alternate. In other words: after the at least two and preferably three consecutive slightly sloping legs (311), the cross bars (300) are folded to form alternately strong sloping legs (320) and slightly sloping legs (310). At the distal end (120), each cross bar (300) ends with a strongly inclined leg (320). At the end of this strongly inclined leg (320), each cross bar (300) is welded to a lower longitudinal bar (220).
Example 2
By way of further example, reference is made to FIG. 7, FIG. 8, and FIG. 9. These figures show various embodiments of the present reinforcement elements (100) which are identical to the embodiment of the
BE2018 / 5732 first example, except that the cross bars (300) are folded in other ways between the three consecutive slightly sloping legs (311) at the proximal end (110) on the one hand and the distal end (120) on the other.
In FIG. 7, the cross bars (300) are folded over the entire length of the reinforcing element (100) to form alternately three consecutive slightly inclined legs (311) and three consecutive strongly inclined legs (321).
In FIG. 8, between the three consecutive slightly inclined legs (311) on the proximal end (110) on the one hand and the distal end (120) on the other, the cross bars (300) are folded to form alternately three consecutive strongly inclined legs (321) and one slightly sloping leg (310).
In FIG. 9, the cross bars (300) over the entire length of the reinforcement element (100) are folded to form alternately three consecutive slightly sloping legs (311) and one strongly sloping leg (320).
The variations shown in FIG. 7, FIG. 8 and Fig. 7 limit shear stresses and / or increase the resistance to punching of concrete floors in which the reinforcement element is installed, but at the expense of additional use of materials to manufacture the reinforcement elements. The use of a larger amount of steel does, however, reduce the amount of concrete that is required.
Example 3
By way of further example, we refer to FIG. 10A, FIG. 10B, FIG. 11A and FIG. 11B. FIG. 10A shows a plan view of an arrangement of four reinforcement elements (100) according to example 1 in a concrete floor supported by a column (600). FIG. 10B shows a top view of an arrangement of six reinforcement elements (100) according to example 1 in a concrete floor supported by a column (600). FIG. 11A and FIG. 11B show a side view of the arrangement of reinforcement elements (100). For the sake of clarity, only two diametrically opposed reinforcement elements (100) are shown. However, in practice more reinforcement elements are typically used.
BE2018 / 5732
In FIG. 10A, the reinforcement elements (100) are placed around the column (600) with their proximal end (110) adjacent to the column (600). An optional bracket (500) is provided attached to the proximal ends (110) of diametrically opposed reinforcement elements (100). The bracket (500) is a pleated steel wire that spans the column (600). The bracket (500) includes curved ends (510) and an elongated inner part (530).
With the inwardly bent ends (510), the diametrically opposed reinforcement elements (100) are connected to each other via their proximal ends (110). This connection is established by weaving the ends (510) of the bracket (500) between a transverse bar (300) and the upper longitudinal bar (210) of the reinforcing elements (100).
In FIG. 10B, the reinforcement elements (100) are placed linearly around the column (600). The reinforcement elements (100) can optionally be connected to each other by means of a bracket (500) as indicated in Figs. 11A or by passing the upper longitudinal bar (600) as indicated in FIG. 11B.
Example 4
By way of further example, we refer to FIG. 12 and FIG. 13. FIG. 12 shows a reinforcement element (100) wherein the structure of the reinforcement element (100) is mirrored around a transition point (130) located in the center of the reinforcement element (100), between the proximal end (110) and the distal end (120) is located.
Between the transition point (130) and the proximal end (110), the reinforcing element has a structure identical to the structure described in Example 1: both the slightly inclined legs (310) and the strongly inclined legs (320) are inclined in the towards the proximal end (110), and at the proximal end (110) the cross bars (300) are folded to form three consecutive slightly sloping legs (311).
Between the transition point (130) and the distal end (120), the reinforcing element (100) has a structure that is the mirror image of the structure between the transition point (130) and the proximal end: both the slightly inclined
BE2018 / 5732 legs (315) and the strongly inclined legs (325) slope obliquely in the direction of the distal end (120). The slightly sloping legs make an angle α with the lower longitudinal bars that is larger than the angle β that the strongly inclined legs make with the lower longitudinal bars. The angle α is equal to the aforementioned angle α that the slightly sloping legs make with the lower longitudinal bars between the transition point (130) and the proximal end (110). The angle β is equal to the angle β that the strongly inclined legs (320) make with the lower longitudinal bars (220) between the transition point (130) and the proximal end (110).
The three outer legs at the distal end (120) are three consecutive slightly sloping legs (316). In other words, the cross bars (300) at the distal end (120) are pleated to form three consecutive slightly sloping legs (316).
A reinforcement element (100) according to the present example is particularly useful when a floor is to be reinforced in the vicinity of two columns. By placing a reinforcing element (100) according to this example between the columns, the resistance to punching is simultaneously increased around the two columns.
FIG. 13 shows a reinforcing element (100) whose proximal ends are connected to each other.
Example 5
In a further example, reference is made to Figs. 14. This figure shows four views in panels a) to d) of a reinforcement element (100). In particular, panel a), b), c), and d) show a side view, a front view, a top view, and a perspective view of the reinforcement element (100), respectively.
The reinforcement element (100) comprises a proximal end (110) and a distal end (120). The proximal end (110) and the distal end (120) are located at opposite ends of the reinforcing element (100). During normal use, the reinforcement element (100) is placed in a concrete floor, with the proximal end (110) adjacent to a point where the concrete floor rests on a column.
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The reinforcing element comprises an upper longitudinal bar (210), a lower longitudinal bar (220), and a transverse bar (300). The longitudinal bars (210, 220) run in the longitudinal direction of the reinforcement element (100). The cross bar (300) winds between the upper longitudinal bar (210) and the lower longitudinal bar (220) to form legs (310,320). The cross bar (300) is bent between consecutive legs (310) to form bends (330,340): upper bends (330) and lower bends (340). Each lower bend (340) protrudes below the lower longitudinal bar (220). Each upper bend (330) protrudes above the upper longitudinal bar (210). Thus, the cross bar (300) crosses the longitudinal bars (210, 220) at the level of the bends (330,340). At the position where the cross bar (300) crosses the longitudinal bars (210, 220), the cross bar (300) is welded to the longitudinal bars (210, 220).
The cross bar (300) includes slightly sloping legs (310) and highly sloping legs (320). Both the slightly inclined legs (310) and the strongly inclined legs (320) are inclined in the direction of the proximally extending (110) of the reinforcing element (100). The slightly sloping legs (310) make an angle α with the longitudinal bars (210, 220) that is equal to 85 °. The strongly inclined legs (320) make an angle β with the longitudinal bars (210, 220) that is equal to 55 °. Because the longitudinal bars are parallel, the angle between the slightly inclined legs and the lower longitudinal bar is equal to the angle between the slightly inclined legs and the upper longitudinal bar. Also the angle between the strongly inclined legs and the lower longitudinal bar is equal to the angle between the strongly inclined legs and the upper longitudinal bar.
At both the proximal end (110) and the distal end (120), the longitudinal bars (210, 220) and the transverse bar (300) terminate. At the proximal end, the cross bar (300) ends in particular at the height of the upper longitudinal bar (210). At the distal end (120), the cross bar ends at the lower longitudinal bar (220). At the proximal end (110), the cross bar (300) is pleated to form at least two consecutive slightly sloping legs (311). The at least two consecutive slightly sloping legs (311) limit shear stresses and / or increase the resistance to punch of a concrete floor in which the reinforcement element (100) is placed. The at least two
BE2018 / 5732 consecutive slightly sloping legs (311) are parallel to each other. The mutual distance between the at least two consecutive slightly sloping legs (311) is approximately 3 to 5 times the diameter of the legs.
More towards the distal portion (120), strongly inclined legs (320) and slightly inclined legs (310) alternate. In other words: after the at least two slightly inclined legs (311), the cross bar (300) is folded to form alternately strongly inclined legs (320) and slightly inclined legs (310). At the distal end (120), the cross bar (300) ends with a strongly inclined leg (320). At the end of this strongly inclined leg (320), the cross bar (300) is welded to the lower longitudinal bar (220).
Further, at the proximal end (110), a spur of the lower longitudinal bar (220) is pleated to form a support bar (400). In particular, the support rod (400) comprises a square part (410) and a parallel part (420). The square part (410) is perpendicular to the longitudinal bars (210, 220). The parallel portion (420) is parallel to the longitudinal bars (210, 220) and is folded away from the proximal end (110) and toward the distal end (120). As an alternative embodiment (not shown), a spur of the lower longitudinal bar is pleated at the distal end to form a support bar. In this case, the parallel portion of the support rod is pleated away from the distal end and toward the proximal end.
FIG. 18 (A-B) shows the reinforcement element according to Fig. 14, wherein the reinforcement element comprises two cross bars.
Example 6
By way of further example, we refer to FIG. 15. This figure comprises three panels a), b), and c), and shows how two reinforcement elements (101, 102), a first reinforcement element (101) and a second reinforcement element (102) are arranged one behind the other.
BE2018 / 5732
Example 7
By way of further example, we refer to FIG. 16. This figure comprises three panels a), b), and c), and shows how different reinforcement elements (103, 104, 105) are placed side by side to form a stack (140).
Example 8
By way of further example, we refer to FIG. 17. FIG. 17 shows a side view of an arrangement of reinforcement elements (100). For the sake of clarity, only two diametrically opposed reinforcement elements (100) are shown. Above the reinforcement elements (100) is a net (not shown). Depending on the expected load on the column, the addition of additional reinforcement can be useful. In the case of a relatively high load, additional reinforcing bars (not shown) can be provided on top and over the column (400). These additional reinforcing bars do not necessarily have to be connected to the reinforcement elements (100). The reinforcement elements (100), the net, and the additional reinforcing bars are embedded in concrete. Along this concrete, the forces on the upper longitudinal bar are transferred to the additional reinforcing bars, which in turn transfer these forces to opposite reinforcing elements (400).

权利要求:
Claims (27)
[1]
CONCLUSIONS (retyped)
A reinforcing element (100) comprising a proximal end (110), a distal end (120), at least one cross bar (300), and at least one longitudinal bar (210, 220), wherein the at least one longitudinal bar (210, 220) has an upper longitudinal bar (210) ), and wherein the at least one cross bar (300) is connected to the upper longitudinal bar (210);
- wherein the at least one cross bar (300) comprises at least two slightly sloping legs (310) and at least one highly sloping leg (320); wherein both the slightly inclined legs (310) and the at least one strongly inclined leg (320) run obliquely toward the proximal end (110); and wherein the slightly inclined legs (310) make an angle α with the upper longitudinal bar (210) that is greater than the angle β that the highly inclined legs (320) make with the upper longitudinal bar (210);
- and characterized in that the two outer legs at the proximal end (110) of the at least one cross bar (300) are at least two consecutive slightly sloping legs (311).
[2]
The reinforcing element (100) according to claim 1, comprising two longitudinal bars (210, 220), and one and only one cross bar (300), the two longitudinal bars (210, 220) comprising an upper longitudinal bar (210) and a lower longitudinal bar (220),
- wherein the cross bar (300) is connected to the upper longitudinal bar (210) and to the lower longitudinal bar (220);
- wherein the cross bar (300) comprises at least two slightly inclined legs (310) and at least one strongly inclined leg (320);
- wherein both the slightly inclined legs (310) and the at least one strongly inclined leg (320) run obliquely toward the proximal end (110);
- and wherein the slightly inclined legs (310) make an angle α with the upper longitudinal bar (210) that is larger than the angle β that the strongly inclined legs (320) make with the upper longitudinal bar (210);
- and characterized in that the two outer legs at the proximal end (110) of the cross bar (300) are two consecutive slightly sloping legs (311).
[3]
The reinforcing element (100) according to claim 2, further comprising a support bar (400), the support bar comprising a square part (410) and a parallel part (420), the square part (410) being perpendicular to the longitudinal bars (210, 220) ), and wherein the parallel portion (420) is parallel to the longitudinal bars (210, 220).
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[4]
The reinforcing element (100) according to claim 2 or 3, wherein the transverse bar (300) comprises three consecutive slightly inclined legs (311) at the proximal end, and wherein the transverse bar (300) between the three consecutive slightly inclined legs (311) on the proximal end (110) on the one hand and the distal end (120) on the other hand comprises a plurality of slightly sloping legs (310) and a plurality of highly sloping legs (320).
[5]
The reinforcing element (100) according to any of claims 2 to 4, wherein the cross bar (300) is bent at multiple locations to form upper bends (330) and lower bends (340), the upper bends (330) above the upper longitudinal bar (210) protrude, and optionally wherein the lower bends (340) protrude below the lower longitudinal bar (220).
[6]
The reinforcing element (100) according to any one of claims 2 to 5, wherein the cross bar (300) and / or the longitudinal bars (210, 220) are continuous.
[7]
The reinforcing element (100) according to any of claims 2 to 6, wherein the longitudinal bars (210, 220) are mutually parallel within a margin of error of 1.0 °.
[8]
The reinforcing element (100) according to claim 1, comprising two cross bars (300), wherein both cross bars are connected to the upper longitudinal bar (210);
- wherein each cross bar (300) comprises at least two slightly inclined legs (310) and at least one strongly inclined leg (320); wherein both the slightly inclined legs (310) and the at least one strongly inclined leg (320) run obliquely toward the proximal end (110); and wherein the slightly inclined legs (310) make an angle α with the upper longitudinal bar (210) that is greater than the angle β that the highly inclined legs (320) make with the upper longitudinal bar (210);
- and wherein the two outer legs at the proximal end (110) of each cross bar (300) are at least two consecutive slightly sloping legs (311).
[9]
The reinforcing element (100) according to claim 8, comprising at least three substantially parallel longitudinal bars (210, 220); the longitudinal bars (210, 220) comprising an upper longitudinal bar (210) and two lower longitudinal bars (220), each lower longitudinal bar (220) being connected to the upper longitudinal bar (210) by means of a transverse bar (300).
[10]
The reinforcing element (100) according to claim 8 or 9, wherein each cross bar (300) comprises at least three slightly sloping legs (310) and at least one highly sloping leg (320); and wherein the three outer legs at the proximal end (110) of each cross bar (300) are three consecutive slightly sloping legs (311).
BE2018 / 5732
[11]
The reinforcing element (100) according to any of claims 8 to 10, wherein each cross bar (300) between the three consecutive slightly sloping legs (311) at the proximal end (110) and the distal end (120) has several slightly sloping legs ( 310) and a plurality of strongly inclined legs (320).
[12]
The reinforcing element (100) according to any of claims 8 to 11, wherein the cross bars (300) are bent at multiple locations to form upper bends (330) and lower bends (340), the upper bends (330) above the upper longitudinal bar (210) protrude, and optionally wherein the lower bends (340) protrude below the lower longitudinal bars (220).
[13]
The reinforcing element (100) according to any of claims 8 to 12, wherein the transverse bars (300) and / or the longitudinal bars (210, 220) are continuous.
[14]
The reinforcing element (100) according to any of claims 8 to 13, wherein the longitudinal bars are mutually parallel within a margin of error of 1.0 °.
[15]
The reinforcement element (100) according to any of claims 1 to 14, wherein the reinforcement element comprises a transition point (130) between the proximal end (110) and the distal end (120), the reinforcement element (100) between the transition point (100) 130) and the distal end (120) comprises further slightly inclined legs (315) and further strongly inclined legs (325), the further slightly inclined legs (315) and the further strongly inclined legs (325) sloping in the direction of the distal end (120), wherein the slightly inclined legs (310) make an angle α with the lower longitudinal bars (220) that is greater than the angle β that the strongly inclined legs (320) make with the lower longitudinal bars (220), and wherein the three extreme legs at the distal end (120) are three consecutive slightly sloping legs (316).
[16]
The reinforcing element (100) according to any of claims 1 to 15,
- wherein the strongly inclined legs (320) form an angle β with the upper longitudinal bar (210) that is greater than 40.0 ° and that is smaller than 75.0 °; and
- the slightly inclined legs (310) forming an angle α with the upper longitudinal bar (210) that is smaller than 90.0 ° and that is at least 5.0 ° greater than the angle β between the strongly inclined legs (320) and the upper longitudinal bar ( 210).
[17]
The reinforcing element (100) according to any one of claims 1 to 16, wherein all slightly inclined legs (310) are mutually parallel within a margin of error of 1.0 °; and
BE2018 / 5732 in which all strongly inclined legs (310) are mutually parallel within a margin of error of 1.0 °.
[18]
A method of manufacturing a reinforcement element (100), the method comprising the following steps:
- providing at least one longitudinal bar (210,220) and at least one cross bar (300), wherein the at least one cross bar (300) and the at least one longitudinal bar (210,220) each comprise a proximal end and a distal end and wherein the at least one longitudinal bar ( 210,220) comprises an upper longitudinal bar (220);
- bending the at least one cross bar (300) at the proximal end (110) to form at least two consecutive slightly sloping legs (311);
- further towards the distal end (120) with respect to the at least two consecutive slightly inclined legs (311): folding the at least one cross bar (300) to form at least one strongly inclined leg (320) and optionally one or more slightly sloping legs (310);
- attaching the cross bar to the upper longitudinal bar (210).
[19]
A method of manufacturing a reinforcing element (100), the method comprising the following steps:
- providing two longitudinal bars (210, 220) and a transverse bar (300), wherein the transverse bar (300) and the two longitudinal bars (210, 220) each comprise a proximal end and a distal end, and wherein the two longitudinal bars (210, 220) have an upper longitudinal bar (210) and a lower longitudinal bar (220);
- folding the cross bar (300) at the proximal end (110) to form at least two consecutive slightly sloping legs (311);
- further towards the distal end (120) relative to the at least two consecutive slightly sloping legs (311): folding the cross bar (300) to form at least one strongly sloping leg (320) and optionally one or more slightly sloping legs (310);
- attaching the transverse bar to the upper longitudinal bar (210) and to the lower longitudinal bar (220), thus fixing the lower longitudinal bar (220) to the upper longitudinal bar (210) with the aid of the transverse bar (300).
[20]
A method of manufacturing a reinforcing element (100), the method comprising the following steps:
BE2018 / 5732
- providing at least one longitudinal bar (210) and two transverse bars (300), wherein the transverse bars (300) and the longitudinal bar (210) comprise a proximal end (110) and a distal end (120), and wherein the longitudinal bar has an upper longitudinal bar (210);
- folding the cross bars (300) at the proximal end (110) to form at least two consecutive slightly sloping legs (311);
- further towards the distal end (120) relative to the at least two consecutive slightly inclined legs (311): folding the cross bars (300) to form at least one strongly inclined leg (320) and optionally one or more slightly inclined legs (310);
- attaching the cross bars (300) to the upper longitudinal bar (210).
[21]
The method of claim 20, the method comprising the steps of:
- providing three longitudinal bars (210, 220) and two transverse bars (300), wherein the transverse bars (300) and the longitudinal bars (210, 220) comprise a proximal end (110) and a distal end (120), and wherein the three longitudinal bars have an upper longitudinal bar and two lower longitudinal bars;
- folding the cross bars (300) at the proximal end (110) to form at least two consecutive slightly sloping legs (311);
- further towards the distal end (120) relative to the at least two consecutive slightly inclined legs (311): folding the cross bars (300) to form at least one strongly inclined leg (320) and optionally one or more slightly inclined legs (310);
- attaching each lower longitudinal bar (220) to the upper longitudinal bar (210) using one of the transverse bars (300).
[22]
A method according to claim 20 or 21, wherein at least one consecutive, slightly sloping legs (311) are formed at the proximal end (110) when folding the transverse bars (300).
[23]
A reinforcement structure for limiting shear stresses and / or for the prevention of punch in a concrete floor, the reinforcement structure comprising at least two reinforcement elements (100) according to any of claims 1 to 17, wherein the at least two reinforcement elements (100) are substantially parallel or be arranged rotationally symmetrically.
[24]
The reinforcement structure of claim 23, wherein the at least two reinforcement elements (100) comprise two or more opposite reinforcement elements; and
BE2018 / 5732 wherein the proximal ends (110) of the two opposite reinforcing elements (100) are connected to each other via a bracket (500).
[25]
A floor comprising a reinforcement structure as claimed in claim 23 or 24, wherein the reinforcement structure is embedded in a hardened cement-containing material.
5
[26]
A building comprising one or more columns and a floor according to claim 25, wherein the concrete floor rests on the column or wherein the column rests on the concrete floor.
[27]
Use of a reinforcing element according to any one of claims 1 to 17 for limiting shear stresses and / or for the prevention of punching in a concrete floor resting on a column or in a concrete floor on which a column rests.

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同族专利:

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公开号 | 公开日

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BE1026060A1|2019-09-25|

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BE1026060B1|2019-10-01|

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EP3533946A1|2019-09-04|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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WO2011067027A1|2009-12-03|2011-06-09|Fischer Rista Ag|Reinforcement device|

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EP2698484A1|2012-08-13|2014-02-19|Filigran Trägersysteme GmbH & Co. KG|Point supported element or flat concrete construction|

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RU2637668C1|2016-07-04|2017-12-06|Федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный технический университет" |Reinforcing cage for multispan reinforced concrete beams|

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法律状态:
2019-07-17| FG| Patent granted|Effective date: 20190703 |

优先权:

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申请号 | 申请日 | 专利标题

---

BE2018/5121|2018-03-01|

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BE2018/5121A|BE1026060B1|2018-03-01|2018-03-01|GAINING ELEMENT|EP19159904.2A| EP3533946A1|2018-03-01|2019-02-28|Reinforcement element|