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    • 专利摘要:
    The object of the invention is tensioning two concrete layers which are reinforced with iron. For this the method according to the invention proposes that a screw bolt (6) is fixed in a bore hole in one layer by means of an adhesive means, a hollow tube of a filling device of the screw bolt (6) is attached in the bore hole (5), wherein the hollow tube (8.1) has a larger inner diameter compared with the diameter of the screw bolt (6) and supports at its rear end a ring (8.2) projecting radially beyond the hollow tube and formed concave towards the hollow tube (8.1), the filling device is fixed on the screw bolt (6) by a nut against the first concrete layer (1), mortar is inserted through an opening (8.4) formed eccentrically in the ring part (8.2), into a ring channel (5.3) of the bore (5) surrounding the hollow tube until the mortar emerges through a further ring channel (5.4) between the hollow tube and screw bolt out from a central aperture (8.5) of the ring part, the concrete layers (1, 2) are cross—braced by tightening up the screw nut (9) and the mortar (12) is hardened.
    公开号:NL2021384A
    申请号:NL2021384
    申请日:2018-07-24
    公开日:2020-01-06
    发明作者:Gerrit Willem Van Den Boogaart Robert
    申请人:B Btec Int B V；
    IPC主号:
    专利说明:

    Octrooicentrum Nederland (2 ) Aanvraagnummer: 2021384 (22) Aanvraag ingediend: 24 juli 2018 © A OCTROOIAANVRAAG © Int. Cl.:
    E04G 23/02 (2018.01)
    Voorrang:
    juni 2018 DE 20 2018 002 871.1
    Aanvrager(s):
    B+BTec International B.V. te ZEVENBERGEN
    Aanvraag ingeschreven:
    januari 2020 © Aanvraag gepubliceerd:
    januari 2020
    m) Tensioning device © Uitvinder(s):
    Robert Gerrit Willem van den Boogaart te ZALTBOMMEL © Gemachtigde:
    ir. J.C. Volmer c.s. te Rijswijk
    57) The object of the invention is tensioning two concrete layers which are reinforced with iron. For this the method according to the invention proposes that a screw bolt (6) is fixed in a bore hole in one layer by means of an adhesive means, a hollow tube of a filling device of the screw bolt (6) is attached in the bore hole (5), wherein the hollow tube (8.1) has a larger inner diameter compared with the diameter of the screw bolt (6) and supports at its rear end a ring (8.2) projecting radially beyond the hollow tube and formed concave towards the hollow tube (8.1), the filling device is fixed on the screw bolt (6) by a nut against the first concrete layer (1), mortar is inserted through an opening (8.4) formed eccentrically in the ring part (8.2), into a ring channel (5.3) of the bore (5) surrounding the hollow tube until the mortar emerges through a further ring channel (5.4) between the hollow tube and screw bolt out from a central aperture (8.5) of the ring part, the concrete layers (1,2) are cross-braced by tightening up the screw nut (9) and the mortar (12) is hardened.
    NLA 2021384
    Deze publicatie komt overeen met de oorspronkelijk ingediende stukken.
    Tensioning device
    The invention relates to a method for cross-bracing concrete layers, to a tensioning device for cross-bracing concrete layers against one another, to a filling device for filling an annular region of a bore hole in concrete as part of the said tensioning device and to a system for cross-bracing concrete layers by using the aforementioned devices .
    There are concrete ceilings which are designed in at least two layers in such a way that first a first lower concrete layer reinforced with iron was cast and then a second likewise reinforced concrete layer was cast thereon. In some cases these two layers separate from one another, become delaminated. Where access is possible from the top side the concrete layers which are to be connected to one another are drilled right through, a screw bolt is pushed through the bore hole, the bore hole is filled with mortar and the concrete layers are braced against one another by nuts screwed onto the screw bolts on both sides. Where access is not possible from the top side it is not possible to use this method because there is another layer there, such as ground coverings, installations or even garden soil.
    The invention is therefore concerned with the problem of providing a device, an installation and a system as well as a method of the types each mentioned above which enable a connection of individually separated delaminated concrete layers from the underneath side.
    According to the invention this problem is solved first by a method for cross-bracing concrete layers comprising the following steps:
    a. drilling a bore hole through a first concrete layer into a second layer;
    b. inserting a destructible bonded anchor cartridge containing an adhesive means, such as vinyl ether, into the portion of the bore hole located in the second concrete layer;
    c. inserting a screw bolt into the bore hole by destroying the cartridge by means of the screw bolt;
    d. hardening the adhesive;
    e. inserting a hollow tube of a filling device into the bore hole wherein an inner end of the hollow tube has a final distance from the adhesive means and wherein the hollow tube has a larger internal diameter compared with the diameter of the screw bolt and supports at its rear end a ring projecting radially over the hollow tube and designed concave towards the hollow tube;
    f. fixing the filling device on the screw bolt by a nut, where applicable through the interposition of a washer, against the first concrete layer;
    g. inserting mortar, more particularly plastics mortar, through an opening formed eccentrically in the ring part into the ring channel of the bore surrounding the hollow tube until the mortar emerges out from a central aperture of the ring part through a further ring channel between the hollow tube and screw bolt;
    h. cross-bracing the concrete layers by tightening up the screw nut, and
    i. hardening the inserted mortar.
    To solve the problem the invention further proposes a tensioning device which comprises a screw bolt, an adhesive means, such as vinyl ether, a filling device, mortar, more particularly plastics mortar, and a nut which can be screwed to the screw bolt. The solution to the said problem is further achieved by a filling device for filling the ring chamber of a bore hole, which is characterized by a tube and a ring part connected thereto which is designed concave towards the tube and outside of the tube has an eccentric opening as well as a central aperture which is connected to the inside of the tube. Finally, the said problem is solved by a system of cross-bracing concrete layers, the concrete layers which are to be braced against one another, and includes a device configured as above and is more particularly characterized in that
    a. a two-step bore extends from an outer side of a first concrete layer, preferably the underneath side of a first concrete layer, through the latter into the second concrete layer and ends at a final distance from the end face of the second concrete layer which is remote from the first concrete layer;
    b. that a first outer portion of the bore extending through the first concrete layer and partially into the second concrete layer has a larger diameter than the following second inner portion of the bore;
    c. that the screw bolt extends through the entire bore, projects with a rear end beyond the first concrete layer and is fixed by its front end side solely in the second concrete layer by means of a hardened adhesive means, such as vinyl ether, preferably from a bonded anchor cartridge;
    d. that the tube of the filling device in the widened part of the bore hole furthermore is arranged with a radial distance on the one side from the bore hole wall and on the other side from the screw bolt and the ring part bears against the free surface of the first concrete layer;
    e. that the interspaces between the tube and inside wall of the bore hole as well as between the tube and screw bolt are filled completely with hardened mortar, epoxy resin, and
    f. that the two concrete layers are braced against one another with the aid of the ring part of the filler element through the nut interacting with the screw bolt and are held bonded to one another by hardened mortar located in the widened part of the bore hole.
    A reliable permanent connection between individually separated delaminated concrete layers is possible through the solution according to the invention, also within the scope of the elements of the solution detailed individually as well as the procedure relating to the method.
    Whereas the adhesive means mentioned, mortar and adhesive substances, are those preferred, others such as polyester and hybrid adhesives based on dimethacrylate can also be provided.
    Within the scope of the method it is preferred if reinforcing iron rods are located in the concrete layers beforehand. The bore hole is furthermore preferably cleaned, namely more particularly by compressed air, prior to inserting the bonded anchor cartridge.
    The tensioning device is preferably designed in that the filling device comprises a tube and a ring part radially projecting beyond the latter wherein more particularly the tube and the ring part of the filling device are furthermore formed integrally with one another and/or the ring part is shaped concave towards the tube. Further developments of the tensioning device propose that the ring part has radial grooves on its side facing away from the tube and/or that the filling device has in addition to a central aperture an eccentric opening in the ring part wherein the tensioning device furthermore can have a washer for interposition between the nut and ring part of the filling device.
    In a further development of the filling device it is proposed that radial grooves are formed extending before the aperture on the side of the ring part facing away from the tube and/or that they are formed in one piece.
    The system according to the invention for cross-bracing the concrete layers can be further developed in that a washer is disposed between the ring part of the filling device and the nut.
    Through the invention the possibility is thus provided of cross-bracing delaminated concrete layers to one another again which are only accessible from one side, more particularly the underneath side.
    Further advantages and features of the invention are apparent from the claims and the following description in which an exemplary embodiment of the invention is explained in detail with reference to the drawings. In the drawings:
    Fig. 1shows an overall view of the tensioning system according to the invention, at the same time as the last method step of the method according to the invention for crossbracing concrete layers;Fig. 2shows a perspective view of a filling device according to the invention for introducing mortar into a bore; and
    Figs. 3a-
    3eshow method steps of the method according to the invention.
    The tensioning system according to the invention contains two concrete layers 1, 2 which are braced to one another by a tensioning device 3 according to the invention.
    The concrete layers 1, 2 are a lower cast ceiling layer 1 and a concrete layer 2 cast thereon. Both layers 1, 2 are reinforced by reinforcing iron rods 4.
    A two-step bore 5 extends from the underneath of the first concrete layer 1 into the second concrete layer 2. It ends with a final distance below the top side 2.1 of the concrete layer 2.
    The two-step bore 5 comprises a lower bore portion 5.1 which extends through the concrete layer 1 up into the concrete layer 2. It has an adjoining second bore portion
    5.2 in the second concrete layer 2. The lower bore portion
    5.1 has a larger diameter than the upper bore portion 5.2.
    A screw bolt 6 which is fixed by its upper region 6.1 in the bore hole part 5.2 by means of a hardened resin 7 extends from the lower layer 1 through the entire bore up to its upper (inner) end 5.1.1. The resin 7 is one already known by way of example from ML2004469A, corresponding to DE 10 2010 013 924 Al.
    A tube 8.1 of a filling device 8 consisting of this and a ring part 8.2 is inserted in the lower widened bore part
    5.2. The parts 8.1, 8.2 are formed integral with one another. The ring part 8.2 projects radially beyond the tube 8.1 and is designed concave in respect of same. The internal diameter of the tube 8.1 is by a finite value greater than the diameter of the screw bolt 6. The outer diameter of the tube 8.1 is by a finite value smaller than the diameter of the bore 5 in the lower region 5.1 so that ring channels 5.3, 5.4 are formed between the inner wall of the bore 5 in the region 5.1 and the tube 8.1, on the one hand, and the tube 8.1 and the screw bolt 6 on the other hand.
    The inner end 8.3 of the tube 8.1 facing away from the ring part 8.2 ends with a final distance in front of the inner end 5.1.1 of the portion 5.1 of the bore 5 so that between the end 8.3 of the tube 8.1 and the ledge formed by the end
    5.1.1 of the region 5.1 of the bore 5, a connecting space
    5.5 of the bore 5 is formed between the two ring channels
    5.3, 5.4 previously described.
    The filling device 8 has an eccentric opening 8.4 in the ring part 8.2. It furthermore has in the centre an aperture 8.5 which is connected to the interior of the tube
    8.1 and from which, on the outer side of the ring part 8.2 facing away from the tube 8.1, grooves 8.6 extend radially over a certain part of the ring part 8.2.
    The tensioning system and tensioning device according to the invention furthermore include a nut 9 interacting with the screw bolt 6, and a washer 10 arranged between the nut and the ring part 8.2, as well as a key 11 engaging on the nut 9 and against the first concrete layer 1 via the washer 10 and the ring part 8.2.
    Mortar 12, more particularly plastics mortar, such as epoxy, vinyl, urethane or a hybrid mortar of these materials is introduced through the eccentric opening 8.4 into the two ring channels in the region between the concrete part 1 and the washer 10 and emerges from the grooves 8.6 and hardens after the nut 9 is tensioned, wherein on tensioning the nut 9 the securement of the bolt 6 in the concrete part 2 forms the brace abutment.
    The two concrete layers 1, 2 are fixedly braced against one another in this way through the screw bolt 6 by means on the one hand of the resin 7 hardened in the concrete layer 2, and on the other hand of the mortar 12 assisted by the screw nut 9.
    The method sequence for producing the cross-bracing and the tensioning system according to the invention is shown in Figs. 3-3e completed by the result of Fig. 1 and is substantially as follows:
    First, where applicable, reinforcement layers are placed in the concrete layers 1, 2 so that the latter are not damaged by the following measures. Then, according to Fig 3a, a two-step bore is made through the concrete layer 1 and into the concrete layer 2 by means of a suitable drill provided with a step in a drilling step, wherein the step is located between the radially wider bore part 5.1 and the radially narrower bore part 5.2 inside the concrete layer 2, and the bore ends with a final distance from the opposite surface of the concrete layer 2.
    In a next step, a bonded anchor cartridge 7.1 containing a resin 7 such as vinyl ether, is inserted into the portion
    5.2 of the bore hole 5 and the screw bolt is then screwed in under pressure, wherein it destroys the bonded anchor cartridge 7.1, as described in the printed specifications mentioned above, and its inner upper end then arrives at the bottom of the bore part 5.2 of the bore 5 (Fig. 3b).
    The resin 7 in the bore hole part 5.2 of the bore hole 5 is then hardened whereby the screw bolt 6 of the concrete layer 2 is fixed (Fig. 3c). The filling device 8 is then inserted with its tube 8.1 into the region 5.1 of the bore hole 5, pushed in to surround the screw bolt 6 at a distance and at first tensioned loosely with its ring part
    8.2 against the underneath surface of the concrete layer 1 (Fig. 3d) through the nut 9 with the interposition of the washer 10.
    Mortar 12 is then forced from a cartridge 12.1 through the eccentric opening 8.4 of the ring part 8.2 into the region between the ring part 8.2 and underneath surface of the concrete layer 1 further into the outer ring channel 5.3 surrounding the tube 8.1 in the bore portion 5.1 (likewise Fig. 3d), then back over the region 5.5 through the inner ring channel 5.4 between the tube 8.1 and screw bolt 6 until it emerges through the grooves 8.6 on the outer side of the ring part 8.2. This indicates that the entire path or space described, more particularly the two said ring channels, are completely filled with the mortar (Fig. 3e).
    Tensioning the nut 9 on the screw bolt 6 is now carried out by means of the key 11 (Fig. 1) whereby the two concrete layers 1, 2 are pressed against one another.
    The mortar then hardens on the one hand in the outer ring channel 5.3 outside of the tube 8.1 and on the other hand in the inner ring channel 5.4 between the tube 8.1 and screw bolt 6. The two layers 1, 2 are here braced securely against one another and connected to one another.
    Corresponding cross-braces are carried out at suitable intervals over the entire surface of the concrete layers 1,
    权利要求:
    Claims (2)
    [1]
    Conclusions
    1. Method for fixing concrete layers (1,
    [2]
    2) with the steps:
    a. drilling a borehole (5) through a first concrete layer (1) into a second concrete layer (2),
    b. introducing an adhesive (7), such as vinyl ether, containing destructible connecting dowel patterns into the portion (5.2) of the borehole located in the second concrete layer (2),
    c. inserting a screw bolt (6) into the borehole (5) while destroying the cartridge (7.1) by means of the screw bolt (6),
    d. curing the adhesive (7),
    e. inserting a hollow tube (8.1) of a loading device (8) into the borehole (5), wherein an inner end (8.3) of the hollow tube (8.1) comprises a finite distance from the adhesive and wherein the hollow tube (8.1) has a larger inner diameter than the diameter of the screw bolt (6) and carries a ring (8.2) at its rearwardly directed end which extends radially over the cavity tube, which is concavely shaped towards the cavity tube (8.1),
    f. fixing the loading device on the screw bolt by a nut, optionally under an intermediate layer of a washer, against the first concrete layer (1),
    g. inserting a mortar, in particular plastic mortar, through an opening (8.4) formed eccentrically in the ring part (8.2) into an annular channel (5.3) surrounding the cavity tube from the bore (5) to the mortar via a further annular channel (5.4) exits from a cavity (8.5) of the ring part between cavity tube and screw bolt,
    h. fixing the concrete layers (1, 2) while tightening the screw nut (9), and
    i. curing the introduced mortar (12).
    2. Method according to claim 1, characterized in that pre-reinforcing steel is placed in the concrete layers (1, 2).
    3. Securing device for securing against each other
    10 concrete layers, with a screw bolt (6), an adhesive such as vinyl ether, a loading device (8), mortar (12), in particular plastic mortar, and a nut (9) screwable with the screw bolt (6).
    4. Device as claimed in claim 3, characterized in that the loading device (8) comprises a tube (8.1) and a ring part (8.2) extending radially over it.
    Device as claimed in claim 4, characterized in that
    The tube (8.1) and ring part (8.2) of the loading device (8) are formed in one piece with each other.
    Device according to claim 4 or 5, characterized in that the ring part (8.2) is concave towards the tube (8.1)
    25 is formed.
    Device according to one of claims 4 to 6, characterized in that the ring part (8.2) has radial grooves (8.6) on its side remote from the tube (8.1).
    Device according to one of claims 3 to 7, characterized in that the loading device (8) comprises an eccentric opening (8.4) in the ring part (8.2) in addition to a central break-through (8.5).
    Device according to one of claims 3 to 8, characterized by a washer (10) for the arrangement between nut (9) and ring part (8.2) of the loading device (8).
    10. Loading device for loading the ring area of a borehole in concrete around a screw bolt contained therein, characterized by a tube (8.1) and a ring part (8.2) connected thereto, which is concave shaped towards the tube and outside the tube an eccentric opening (8.4) as well as a break-through (8.5) located in the middle and connected to the interior of the tube (8.1).
    Device according to claim 10, characterized in that for the break-through (8.5), on the side of the ring part (8.2) remote from the tube (8.1), extending grooves (8.6) are formed.
    Device as claimed in claim 10 or 11, characterized in that they are formed in one piece.
    A system for fixing concrete layers, with concrete layers to be fixed together (1.2) and a fixing device (3) according to one of claims 1 to 10, characterized in that,
    a. a two-stage bore (5) from an outside of a first concrete layer (1), preferably the underside of a first concrete layer (1), extends through it into the second concrete layer (2) and at a finite distance from the one of the first concrete layer facing front of the second concrete layer (2) ends,
    b. that a first outer portion (5.1) of the bore (5) extending through the first concrete layer (1) and partially extending into the second concrete layer (2) comprises a larger diameter than the next second inner portion (5.2) of the bore ( 5)
    c. that the screw bolt (6) extends through the joint bore, extends rearwardly over the first concrete layer (1) and with its front end inside exclusively in the second concrete layer by means of a cured adhesive, such as vinyl ether, preferably from a connecting dowel pattern,
    d. furthermore that the tube (8.1) of the loading device (8) is arranged in the further part (5.1) of the borehole (5) with radial distance on the one hand to the borehole wall, and on the other hand to the screw bolt (6) and the ring part (8.2) to the free surface of the first concrete layer (1),
    e. the space between pipe (8.1) and inner wall of the borehole as well as between pipe (8.1) and screw bolt (6) are fully loaded with cured mortar, such as epoxy resin, and
    f. that the two concrete layers (1, 2) are interlocked through the ring part (8.2) of the loading element (8) by the nut (9) cooperating with the screw bolt (6) and hardened into the further part ( 5.1) mortar located from the borehole are interrelated.
    A system according to claim 13, characterized in that a washer (10) is arranged between the ring part (8.2) of the loading device (8) and the nut (9).











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    同族专利:
    公开号 | 公开日
    NL2021384B1|2020-05-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202018002871|2018-06-20|
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