• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a monolithic concrete component with a virtually endless longitudinal expansion and reinforcement oriented in the longitudinal direction, at least one yarn (8) having high-strength filaments being provided as reinforcement (2), which is a quasi-endless layer longitudinally within a matrix material (11) of the concrete component (1) is laid, as well as a method for producing the concrete component, wherein a sliding formwork (6) comprising at least one spool system (7) with yarn nozzle (10) is provided, with the help of this spool system (7) yarn (8) during a relative movement between the sliding formwork (6) and the resulting concrete component (1) is inserted as reinforcement (2) in the sliding formwork (6), while a concrete mass (11) is formed into the reinforced concrete component (1 '). The invention also relates to a slipform paver with at least one spool system (7) for a yarn (8) and a yarn nozzle (10), which are provided for delivering the yarn (8) into a slipform (6) for a concrete mass (11). The invention further relates to a method for repairing a concrete component with a virtually endless longitudinal expansion and a reinforcement oriented in the longitudinal direction using a slipform paver.
    公开号:CH712254B1
    申请号:CH00872/17
    申请日:2016-01-11
    公开日:2020-07-15
    发明作者:Schlüter Dominik；Manfred Curbach
    申请人:Univ Dresden Tech；
    IPC主号:
    专利说明:

    The invention relates to a reinforced monolithic concrete component with an almost endless longitudinal expansion, such as. B. a concrete wall, with longitudinally oriented reinforcement and a manufacturing process therefor, the use of a sliding formwork, for. B. is provided in connection with a slipform paver. The invention further relates to a slipform paver and a repair method for a concrete component.
    Slipform pavers are construction machines that belong to the concrete pavers and are mainly used for the production of road surfaces and other roadways, but can also produce other elongated concrete components using a slipform with the intended cross section. These include, above all, concrete protective walls for limiting the road, the invention not being limited to this, but also encompassing other concrete walls such as are used, for example, to protect embankments. Slipform pavers are mostly self-propelled on steerable and height-adjustable chain trolleys, and often have a telescopic machine frame, receive the concrete to be processed in a receiving funnel, which is metered from there into the sliding formwork.
    Concrete protective walls or concrete walls are also generally summarized under restraint systems for motor vehicles. These restraint systems are often made of metal or concrete. They are primarily intended for a lane boundary. Concrete walls, in particular also made of in-situ concrete, are used for passive protection on roads or bridges.
    In order not to be broken and knocked over at one point in the event of a vehicle impact, it is required to anchor the concrete walls in the roadway. According to the publication EP 1 739235B1, it has been shown that in order to achieve a containment level of H2 according to the relevant standard, it was previously mandatory to clamp the concrete wall in the roadway. However, it has been shown that the concrete wall described does not have to be clamped into the carriageway if several continuous reinforcement elements, in particular reinforcement bars, are provided. The reinforcement bars serve as a continuous tension band with the required deformation and strength properties (see paragraph [009]).
    However, in order to ensure sufficient durability, the concrete walls and their reinforcements must be resistant to chemical and physical influences from the environment. Furthermore, the concrete walls must be manufactured quickly and economically, so that traffic routes can be cleared again promptly after the construction work has been carried out. Concrete walls or concrete protective walls are largely made with a slipform paver and are self-standing and dimensionally stable immediately after leaving the mold. Such a concrete wall is known for example from the document DE 203 03 254 U1 (FIG. 1, paragraph [0039]) or the document DE 203 03 254 U 1.
    The concrete walls are reinforced with steel bars in finite lengths or quasi endless, rolled up on coils. In the case of finite sizes, in the case of transitions and joints, the connections must be welded or overlapped in order to achieve a continuous tension band. GB 2 313 145 A offers a solution for such a conventional slipform paver with reinforcing steel wound on coils.
    In order to reduce the penetration of corrosion-promoting substances such as de-icing salts, cracking must be counteracted by suitable measures. This can be done, among other things, by arranging planned breaking points (dummy joints). In this area, the cross-section of the concrete component is weakened (e.g. by sawing) and the resulting joint is sealed with permanently elastic material. In some systems, the reinforcement bars in this area are additionally protected against corrosion with additives, e.g. B. by sheathing or coating. In the case of sheathing with shrink sleeves, the bond between the concrete and reinforcement is interrupted and the constraining stress is concentrated in the predetermined breaking point. In this way, an uncontrolled crack propagation and a possible risk of corrosion of the uncoated steel between the dummy joints is counteracted. Coating the steel in the area of the predetermined breaking point further improves the corrosion protection.
    The document US 6 612 085 B2 describes a reinforcing bar made of reinforcing fibers (also carbon, see claim 3) in a polymer matrix made of a sufficient amount of resin (column 3, line 23), which is described as process-technically advantageous and as essential. Fibers of finite length (column 3, lines 14, 15 "continuously throughout the entire length of the composite") are intended to form "reforcing bars".
    The arrangement of predetermined breaking points and the required additional corrosion protection such as the sheathing of the reinforcement are associated with a significant additional effort in the manufacturing process. The use of finite steel bars leads to additional expenditure due to the necessary welding measures. Furthermore, despite the measures shown, the service life of the steel reinforcement due to frost and de-icing agents is very limited.
    The disadvantage is that the rod thus formed can not be wound up with a small radius, so it can not fill a function as a drawstring and is unwieldy to process. In addition, the polymer matrix leads to reduced durability and temperature resistance. Furthermore, ribbing is necessary to create a sufficient bond to the concrete. Finite bars continue to create a regular interruption in the reinforcement structure, which means that connection points or lap joints often have to be made in order to guarantee a positive connection.
    The invention is therefore based on the object to offer a concrete component that overcomes the disadvantages of the prior art, to simplify its manufacturing process and the repair of concrete walls, to increase the service life of the construction and to save on material and manufacturing costs, and one for this to offer suitable slipform pavers.
    The object of the invention is achieved by a concrete component according to claim 1. This comprises a reinforcement effective as a tension band, hereinafter also referred to as a reinforcement element, wherein at least one yarn having high-strength filaments is provided as reinforcement, which is a quasi-endless layer lengthways is laid within the concrete component, also called the concrete wall. Any component that essentially consists of concrete as the matrix material and has a large longitudinal extent, preferably is virtually endless, is to be regarded as a concrete wall. This affects, for example, track beds, channels, walkways, carriageways, runways and other monolithic profiles made of concrete.
    Advantages were particularly evident when carbon roving is provided as the yarn. A bundle, strand or multifilament yarn is referred to as roving. Carbon fibers have high strength and are very resistant to chemical influences, which are particularly problematic on roads where de-icing agents are used. Aramid, basalt or glass fibers can also be used.
    It when the carbon roving is present as at least one tension band in the concrete wall is particularly advantageous. Several drawstrings are usually cheap, usually two to five. A constant connection of many fibers to the concrete matrix is not important here, since the carbon roving or another yarn in the concrete wall acts as a pull rope and anchoring is provided at the end points, or large anchoring lengths are permitted even if there is no end anchoring.
    The method of manufacture by means of slipform pavers enables additional advantageous functions and properties for the concrete wall according to the invention.This relates to the integration of an additionally applied top layer, for example a functional layer, into the outer area of the concrete matrix, a solar film having proven particularly advantageous. A concrete protective wall or a track bed with a photovoltaic (PV) surface or film can be used for this purpose.
    [0016] For example, a PV film is used for this. The HeliaFilm® solar film, which can be manufactured in a "roll-to-roll process" and which maintains its efficiency even in poor lighting conditions and high temperatures, proved to be particularly suitable. The PV film is rolled up on a roll, which means that it can be optimally integrated into the existing manufacturing process of the slipform paver. During the slipform process, the film is unwound from the roll, introduced into the concrete area of the slipform paver and inserted into the surface of the monolithic profile. According to a preferred embodiment, it is provided that the roller is attached to the side of the slipform paver.
    During the ongoing process, the film is laterally drawn into the slipform paver and pressed into the concrete matrix. To protect the PV film, a protective layer can be applied to the PV film before or during the manufacturing process. This protective layer protects the PV film from damage, which can be caused in particular by the relative movement between the sliding formwork and the PV film. There are particular advantages when using a protective film and a specially equipped back for improved anchoring in concrete.
    The PV film can be applied directly to the concrete without the need for ventilation and another cooling system. A permanent connection can be guaranteed by the holding elements mentioned on the back of the film or by gluing - a polymer-based adhesive would be particularly suitable here. A non-permanent link is also provided.
    [0019] This manufacturing process creates a monolithic concrete profile with an integrated PV surface. Due to the free formability of the film and the flexible design of the monolithic concrete component, a geometry can be created that optimally combines the requirements of energy generation and use as a structural element.
    The inherent properties of the carbon fibers that form the carbon rowing enable additional advantageous functions and properties of the reinforcement for the monolithic concrete wall according to the invention.
    The use of reinforcement in the concrete wall, which can store energy, is also provided. This is possible, for example, in that a reinforcement bar is provided which has a flat textile which can be rolled or folded into a one-dimensional or one-dimensionally effective shape, e.g. B. a rod shape has been brought. The textile can be designed as a hybrid (for example as a mixture of carbon and glass filaments). Furthermore, by laying one on top of the other, be it in fiber orientation, functionality or material of different types of textiles before the rolling and / or folding process, a hybrid and / or multifunctional rod can be produced. In order to create the bond between the filaments or the different layers within the reinforcement bar, a matrix, for example based on epoxy resin, can be added.
    The components of the reinforcement rolled in this way can also be made from materials which, in addition to their function as reinforcement elements, also have excellent properties as energy stores. In particular, the reinforcement element can be designed as a supercapacitor. Particularly good results could be achieved if the electrode consisted of carbon filaments.
    The reinforcement element thus serves, inter alia, as an electrical energy store, in particular as a capacitor, or has other electrical or electrochemical effects which are based on electrical conduction or semiconducting. This reinforcement element can be used as a lamella, tape or rod, outside and inside the concrete element.
    Furthermore, the energy-storing reinforcement element enables the integration of further functions, such as energy transmission, energy storage, signal transmission or signal processing, into the reinforcement structure. If the yarn or the filaments forming it is used for energy storage or for energy transmission, this takes place, for example, using capacitive or inductive effects, which are electrically conductive or electrically effective yarns or filaments. The same applies, in addition to the deformation, to the effects of signaling and sensors.
    In order to further enlarge the surface of such a double layer capacitor formed from a reinforcement, particles can be added. In addition to the ion transfer, the electrolyte guarantees the bond between the individual carbon filaments. It can be implemented, for example, by an epoxy resin matrix enriched with ions. The separator mechanically separates the two electrodes. There were special advantages for a version made of glass fabric. This has additional wearing properties and good insulating properties. With a larger yield strength of glass fibers than, for example, that of carbon filaments, the separator will be able to perform its important function safely even under load.
    Furthermore, the reinforcement based on carbon fibers makes it possible to recognize an impact or a deformation with an indication of an accident and the possibility of localizing the accident site. This is because carbon fibers have piezo-electrical properties, and it has surprisingly been found that this functionality is possible. When the geometry of the material changes, there is a measurable change in potential within the carbon fiber. In the event of an impact, the reinforcement is deformed. The resulting changes in tension or strain generate a signal which is received and evaluated by a signal receiver. This enables perception in general and in particular the localization of the impact. The durability of this type of sensor is particularly advantageous. Furthermore, there is an economic as well as ecological advantage due to the simultaneous multiple use of the carbon fiber for signal generation, signal transmission and as a supporting structural element.
    Furthermore, the manufacturing method enables simple integration of fiber-based sensor technology, hereinafter referred to as sensor technology. This sensor system can consist, for example, of a glass fiber and a device for signal evaluation, which enables the detection of changes in length of the glass fiber in a spatially resolved manner. This enables vibrations to be measured and localized along the component. This system also enables, for example, the detection and localization of accidents and the monitoring of traffic flow.
    According to the invention it is accordingly provided that the yarn serving as reinforcement or the filaments from which it is formed are additionally used and used as sensors and for signal transmission in the concrete component.
    As a structural element, the reinforcement can occur in various embodiments. With a very low bond to the concrete matrix, it can be used as a so-called tension band. Here, a final anchorage of the reinforcement proves to be advantageous. Another embodiment provides a consistently good bond between the reinforcement and the concrete matrix. Anchoring elements or coated filaments are necessary for this, or at least advantageously.
    In the event that reinforcement is desired, which has a consistently very good connection of all fibers and over the entire length of the concrete wall to the concrete, i.e. produces a small bond length, the invention provides a carbon reinforcement by an additional Process step is obtained, which provides a coating of the filaments or the roving.
    The longer the bond, the better the connection of the fiber (the roving) to the concrete matrix. Accordingly, it is very small (less than 1 meter in the exemplary embodiment, preferably 5 to 20 cm) when anchoring elements are added. It is slightly larger if only one coating is used (in a further exemplary embodiment up to 50 cm). The bond length goes against several meters (e.g. 2 to 5 m), with poor connection and practically towards infinity if only the pure carbon fiber is used. There is hardly any bond here, in such a case the bond to the concrete component is only created by the end anchorages.
    A reduction in the bond length results in a higher total tensile strength, since all filaments of the roving are inevitably and equally loaded under tension. The tensile stress is therefore evenly distributed over all filaments and failure of the filaments one after the other, which could lead to failure of the roving as a whole, is avoided.
    The carbon fiber itself does not take up sufficient binding to the concrete matrix, which results in a large bond length. In order to minimize this bond length, a coating is applied to the fiber, which improves the connection of the reinforcement fiber to the concrete matrix.
    The coating improves both the inner bond (fiber to fiber) and the outer bond (fiber to concrete). Without this coating, only very small forces could be transferred from the concrete matrix into the fiber.
    The connection of the filaments of the roving to a fiber or carbon reinforcement is made by a binder that enables a firm connection of the outer to the matrix material concrete and the inner filaments with each other. In order not to have to accept any loss in the load transfer of the reinforcement, binders should at least reach the resilience of the matrix material. Therefore, cement is preferably used as a binder, which also combines high durability and low temperature dependency. A styrene-butadiene polymer dispersion has also proven to be advantageous. The coating also influences the structural geometry of the roving, which results in better handling and processing properties. The coating process can take place in a finishing process immediately before the roving is drawn into the concrete matrix.
    The manufacture of the coated fiber or carbon reinforcement is preferably carried out immediately before the roving treated in this way in the sliding formwork, e.g. B. in a roving finishing module connected to the slipform paver. This structure can be installed permanently or attached as a removable unit in front of the slipform paver. There the roving is impregnated immediately before it is introduced into the concrete matrix. The application process could represent a simple resin bath through which the roving is pulled (tub process, pull-through process). If it appears necessary to harden or dry the coating before drawing it in, the roving can be pulled through a heated nozzle.
    Furthermore, an improved bond between the fibers and the concrete component or the coating described above can be produced by sanding the carbon fibers by an additional process step before introduction into the concrete component, so that the surface of at least part of the filaments changes accordingly will, e.g. B. roughened or coated. Advantages for an improved bond resulted primarily from the application of a layer of quartz sand. The above also applies to other fiber materials that are used instead of or together with carbon fibers.
    A continuous bond between the reinforcement (the roving) and the concrete can also be produced or improved by additional anchoring elements. These enable the tensile forces that occur to be transferred from the concrete matrix into the reinforcement. This results in small bond lengths. In this case, the moment of inertia of the concrete protective wall is significantly increased by the reinforcement element. In comparison to the manufacturing process without composite, slimmer concrete elements (lower mass) with the same moment of inertia can be realized. The anchoring elements can be added to the roving during the current manufacturing process or can already be part of the wound roving. The anchoring elements are characterized in particular by the fact that they are positively inserted into the roving. This can be achieved by a mechanical connection or gluing. A particular advantage arises when these transverse elements are oriented 45 ° to the longitudinal direction of the roving, as a result of which thrust forces are optimally introduced into the roving.
    A further advantageous embodiment of the invention comprises an end anchorage of the reinforcement present as a tension band. This ensures a bond between the concrete and yarn or roving in the start and / or end points of the concrete component. A constant connection between the roving and the concrete matrix over the length of the tension band is then not necessary. In this embodiment, the roving (the fiber) primarily has the task of holding the torn concrete elements together in the event of an impact. The moment of inertia required to hold back the impact load is caused by the inertia of the concrete protective wall, primarily the concrete mass.
    The anchoring of the yarn or roving in the start and / or end points of the concrete component can be realized, for example, by a simple clamping device or by a loop. In the case of end anchoring by means of a loop, there is an advantageous introduction of the tensile forces from the yarn or roving into the concrete component. Additional anchoring elements can also be used. The anchoring elements are preferably made of the same material as the roving, e.g. B. made of carbon fiber.
    It is further provided that prestressed rovings are used to manufacture prestressed concrete elements. The roving can initially be firmly anchored to the ground using an anchor, in the simplest case as a hammered rod. This pulls the roving into the slipform under tension. This creates a preload on the concrete element, which prevents cracks in the concrete matrix.
    The object of the invention is also achieved by a slipform paver according to claim 17. The bobbin system and the yarn nozzle enable the yarn to be inserted into the concrete in the sliding formwork in the correct position.
    Advantages also result from an embodiment in which the coil system can be dismantled from the slipform paver and reassembled if necessary. Then the slipform paver can manufacture conventional concrete walls as well as concrete walls with yarn as reinforcement according to the invention.
    The object of the invention is also achieved by a method according to claim 10, also referred to as slipform method.
    Advantages were obtained in particular if a roving comprising carbon fibers is provided as the yarn.
    In the manufacture of protective walls by means of slipform and slipform paver, the conventional steel reinforcement is replaced by a textile yarn, in particular carbon fibers. If the yarn or the carbon fibers are wound up as so-called rovings, this is particularly advantageous because it is unthreaded yarn (or with a slight protective twist) and therefore primarily tensile forces are introduced into the fiber.
    However, it is also provided according to an alternative embodiment to use twisted rovings. Coiled fibers (rovings) are available from corresponding manufacturers in fixed cross-sections (number of filaments). A common size is a 50K roving, in which 50,000 filaments form the cross section. In order to obtain greater flexibility in cross-sections, at least two rovings are twisted against one another before being introduced into the concrete matrix. This twisting can take place before the actual manufacturing process; already spools with twisted rovings (cords) are used. However, the twisting can also take place during the manufacturing process, immediately before the roving is introduced into the concrete matrix, in that the individual coils move relative to one another and thereby create a helical winding around the individual rovings (principle of the rope striking machine). This twisting (also called stranding) creates carbon fiber strands of higher resistance while maintaining flexibility. This rope striking machine can be permanently installed or attached as a removable unit in front of the slipform paver and is preferably part of a roving finishing module.
    The current manufacturing process is expanded in such a way that a coil system is placed in front of the slipform paver. With the help of this coil system, the carbon fiber is inserted into the concrete component during the sliding process. The coil system can be supplemented by a device for forming a cord or a rope. This device is preferably part of a roving finishing module.
    This makes it possible to increase the cross section in order to increase the transmissible forces per roving. The particular advantage, however, is that it solves a problem that means that with large roving cross sections, the inner filaments are less stressed than the outer ones. The twisting causes the inner filaments to jam when subjected to tensile stress. As a result, the forces are better transferred from the outer to the inner filaments. As a result, the entire roving has greater strength. Another advantage is the increased flexibility. Despite the enlarged cross-section, the roving is still easily deformable without the filaments kinking.
    In a particularly preferred solution, reinforcements made of carbon fibers are used as yarn for the production of concrete walls. No prefabricated rods are used in the manufacturing process, but so-called carbon roving. This is wound on spools and enables the production of a practically endless drawstring with no joints or joints at short intervals. The rovings are connected at large intervals using mechanical connections or adhesives.
    Carbon is significantly more resistant to chemical and physical effects than steel. This eliminates the need for corrosion protection measures that are necessary for steel. The concrete cover no longer has to provide corrosion protection, which enables the reinforcement to be laid close to the surface and thus can provide advantages in terms of mechanical strength and design of the concrete wall. Larger crack widths can also be permitted. False joints and predetermined breaking points are therefore hardly or no longer required, and there is no need to attach shrink sleeves.
    Due to the endless production and the direct insertion of the carbon reinforcement, a quick and precise introduction of the reinforcement into the concrete wall is possible.
    A carbon reinforcement bar, which is also encompassed by the invention and is obtained by an additional process step, promises further advantages with regard to reinforcement with a consistently very good connection of all filaments of the roving over the entire length of the concrete wall to the concrete. For this purpose, the roving is spread before entering the sliding form, the individual filaments are wetted with a suitable matrix material, in particular fine concrete, and brought together to form a concrete roving. This ensures not only a permanent, permanent bond between the filaments, but also to the matrix material, the concrete that makes up the concrete wall.
    Another solution to the problem of the invention is a method for repairing a concrete component with reinforcement effective as a tension band using a slipform paver, with at least one yarn provided with reinforcement having high-strength carbon filaments that form carbon reinforcement bars, which is provided as a virtually endless layer is laid lengthways within the concrete wall and the repair in the steps:<tb> a) <SEP> cutting through the concrete component,<tb> b) <SEP> exposing the reinforcement and<tb> c) <SEP> gluing or mechanical coupling is carried out.
    In this way, shocks are formed during the repairs.
    For example, track beds, channels, walkways, carriageways, landing strips and other monolithic profiles made of concrete can be produced using the slipform process. To do this, the profile of the slipform paver as well as the number and position of the coils must be adjusted.
    In addition, it should also be pointed out that the production of monolithic concrete profiles using the continuous casting process is based on the same principle as for the slipform process. In this case, the relative movement between the slipform paver and the monolithic concrete element is generated by an assembly line. For such a method and a concrete profile obtainable therefrom, all of the features disclosed for the concrete wall according to the invention apply equally, or at least accordingly.
    In such a continuous casting process, virtually endless, reinforced concrete elements are produced in the continuous casting process. They are then automatically assembled (cut to length). In contrast to steel, the cut surface with exposed stainless reinforcement on the outside of the concrete element can remain unprotected from external influences. The use of stainless reinforcement materials enables automated cutting of the reinforced concrete elements by a simple separation process such as. B. saws.
    Further details, features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. Show it:<tb> <SEP> Fig. 1: a schematic sectional representation of an embodiment of a concrete wall according to the invention with two strands of reinforcement;<tb> <SEP> Fig. 2: a schematic representation of an embodiment of a slipform paver according to the invention;<tb> <SEP> Fig. 3: a schematic representation of an embodiment of a concrete wall according to the invention with concealed reinforcement including an end anchor;<tb> <SEP> Fig. 4: a twisted roving with anchoring elements as reinforcement; and<tb> <SEP> Fig. 5: a schematic representation of a further embodiment of a slipform paver according to the invention.
    Fig. 1 shows a schematic sectional view of an embodiment of a concrete wall 1 according to the invention with two strands of reinforcement 2. The reinforcement 2 is laid throughout and thus represents a continuous force-absorbing connection of the entire concrete wall 1. In particular in the event of an impact when If concrete threatens to fail, the reinforcement 2 absorbs tensile forces and prevents the concrete wall 1 from being deformed or broken inadmissibly.
    While in conventional concrete walls 1 the reinforcement is made of steel, but in individual cases also of glass fiber reinforced plastic, the invention provides that rovings made of carbon fibers are used for this purpose in accordance with the particularly preferred exemplary embodiment shown. These are almost endlessly available, so that hardly any connections or overlaps are necessary. In addition, the material is very corrosion-resistant, so that a very long service life can be expected even under adverse conditions on a road. Added to this is the fact that even if a crack penetrates the concrete, aggressive materials cannot damage the reinforcement material, the carbon fiber.
    Fig. 2 shows a schematic representation of an embodiment of a slipform paver 3 according to the invention, as it is basically known from the prior art, here each supplemented by the possibility of being able to introduce your reinforcement on the basis of carbon fibers.
    The slipform paver 3 moves in the direction of travel 4 on trolleys 5. At the same time, the slipform 6 is moved forward, which is filled with concrete mass 11 via a receiving funnel 12. The concrete wall 1 is created continuously behind the slipform paver 3.
    A coil system 7, arranged on the slipform paver 3, has a coil 9 with yarn 8, preferably rovings made of carbon fiber. The yarn 8 is unwound from the spool 9 in the direction of the sliding formwork 6 and arrives there in a yarn nozzle 10 which brings the yarn 8 in the sliding formwork 6 at the intended position into the concrete wall 1 which is being created. This creates a reinforcement 2, shown here as a dotted line. When the slipform paver 3 moves in the direction of the arrow 4, the future concrete wall 1 'shown as a dashed line is created.
    A mounting device enables the coil system to be removed from the slipform paver 3 when it is not required.
    Fig. 3 shows a schematic representation of an embodiment of a concrete wall 1 according to the invention with concealed reinforcement 2 including an end anchor 14. This is designed in the example as a loop, for which purpose the end of the roving is returned in an arc to the roving and there with a Clamping device 15 was clamped. Alternatively, it is also provided that the connection is made at this point in a different way, for example by gluing.
    FIG. 4 shows a schematic representation of an embodiment of a twisted roving 20 according to the invention, which is provided with anchoring elements 21. These serve to anchor the roving in the concrete matrix and ensure a bond between the reinforcement, the roving and the concrete. This enables the tensile forces that occur to be transferred from the concrete matrix into the reinforcement. In addition, the moment of inertia of the concrete wall made in this way is significantly increased by the reinforcement element. Compared to the manufacturing process without composite, i.e. if the roving only serves as a continuous tension band, slimmer concrete elements with a lower mass and yet the same moment of inertia can be realized.
    The anchoring elements 21 are preferably inserted into the roving in the current manufacturing process, alternatively they are already part of the prefabricated and wound roving. The anchoring elements 21 are distinguished in particular by the fact that they are positively inserted into the roving. It is particularly advantageous if these anchoring elements 21 have a position of 45 ° to the longitudinal direction of the roving.
    5 shows a schematic illustration of a further embodiment of a slipform paver 3 according to the invention. This additionally has a roving finishing module 31 on which the coils 9 with the roving 8 are arranged on a coil system 7. In the roving finishing module 31 it is provided to treat the rovings in such a way that they receive a coating and / or are reworked into twisted rovings or ropes or cords 8 '. These are then introduced into the concreting area 30 via guide tubes 32, alternatively also via rollers or other guide devices.
    As a further alternative, the slipform paver 3 according to the invention has a laminating device 40 by means of which the concrete wall to be produced, alternatively also by means of rollers or other guide devices 1 (cf. FIG. 2), can be provided with a film coating. In the illustrated embodiment, this is a photovoltaic film 41, which is arranged as a roller on the slipform paver 3. The photovoltaic film 41 is guided into the concreting area 30 via an insertion opening 42 and applied to the concrete surface of the concrete wall to be manufactured. It is particularly advantageous if the back of the photovoltaic film 41 is provided with suitable holding elements which enable it to be anchored in the concrete.
    Reference list
    1 concrete wall, concrete component 1 'concrete wall, concrete component (planned or in production) 2 reinforcement 3 slipform paver 4 direction of travel 5 chassis 6 sliding formwork 7 spool system 8 yarn, roving 8' cord, rope 9 spool 10 yarn nozzle 11 concrete mass, matrix material 12 receiving funnel 13 assembly device 14 end anchoring 15 clamping device 20 roving (twisted) 21 anchoring element 30 concreting area 31 roving finishing module 32 guide tube 40 laminating device 41 photovoltaic film 42 inlet opening
    权利要求:
    Claims (20)
    [1]
    1. Monolithic concrete component with quasi-endless longitudinal expansion and reinforcement oriented in the longitudinal direction, characterized in that at least one yarn (8) having high-strength filaments is provided as reinforcement (2), which is a quasi-endless layer lengthways within a matrix material (11) of the Concrete component (1) is laid.
    [2]
    2. Concrete component according to claim 1, wherein a carbon roving is provided as the yarn (8).
    [3]
    3. Concrete component according to claim 1 or 2, wherein the reinforcement (2) is effective as an end anchored tension band, with at least one end anchoring (14) for improved bonding between the matrix material (11) and the reinforcement (2) in a start and / or end point of the Concrete component (1) is provided and inserted within the concrete component (1).
    [4]
    4. Concrete component according to claim 3, wherein the end anchorage (14) is realized by a clamping device (15) or by a loop.
    [5]
    5. Concrete component according to one of claims 1 to 4, wherein the reinforcement (2) along the longitudinal extent of the concrete component (1) is connected to the matrix material (11).
    [6]
    6. Concrete component according to one of the preceding claims, wherein a composite of the reinforcement (2) to the matrix material (11) is improved by a coating.
    [7]
    7. Concrete component according to claim 6, wherein for an improvement of the connection of the reinforcement (2) to the matrix material (11) anchoring elements (21) are provided and are arranged on the reinforcement (2).
    [8]
    8. Concrete component according to one of the preceding claims, wherein the yarn (8) is designed for signal transmission and eitheris designed as glass fiber and a spatially resolved change in length of the glass fiber can be recognized by means of a device for signal evaluation, oris designed as a carbon fiber and a deformation of the carbon fiber as a measurable change in potential within the carbon fiber can be received and evaluated by means of a signal receiver.
    [9]
    9. Concrete component according to one of claims 1 to 7, wherein the yarn (8) is electrically conductive or semiconductive and is designed for use for energy storage as a capacitor or for energy transmission.
    [10]
    10. A method for producing a concrete component according to one of claims 1 to 9, characterized in that a sliding formwork (6) comprising at least one coil system (7) with yarn nozzle (10) is provided, with the help of this coil system (7) yarn (8) during a relative movement between the sliding formwork (6) and the resulting concrete component (1) is inserted as reinforcement (2) in the sliding formwork (6), while a matrix material (11) is formed into the reinforced concrete component (1 ').
    [11]
    11. The method according to claim 10, wherein the relative movement is caused by a stationary assembly line.
    [12]
    12. The method according to claim 10, wherein the relative movement is caused by a mobile slipform paver (3).
    [13]
    13. The method according to any one of claims 10 to 12, wherein the yarn (8) is finished by in situ coating.
    [14]
    14. The method according to any one of claims 10 to 13, wherein the yarn (8) is refined by stranding to form a rope (8 ') or a cord (8').
    [15]
    15. The method according to any one of claims 10 to 14, wherein an application of a functionalized surface layer to the concrete component (1 ') is provided during the molding.
    [16]
    16. The method according to claim 15, wherein a photovoltaic film (41) is provided as the functionalized surface layer.
    [17]
    17. slipform paver for producing a concrete component (1) according to any one of claims 1 to 9, characterized in that at least one coil system (7) for at least one yarn (8) and each a yarn nozzle (10) for dispensing the yarn (8) in a sliding formwork (6) for a matrix material (11) is provided.
    [18]
    18. slipform paver according to claim 17, wherein a device for applying a functionalized surface to the concrete component (1) is provided.
    [19]
    19. A method for repairing a concrete component according to one of claims 1 to 9 using a slipform paver (3) according to claim 17 or 18, characterized in that at least one yarn (8) having high-strength carbon filaments is provided as reinforcement (2), which is laid as an endless layer lengthways within the concrete component (1) and the repair in the stepsa. Cutting through the concrete component (1),b. Exposing reinforcement (2) andc. Gluing or mechanical coupling is made.
    [20]
    20. Use of a concrete component according to one of claims 1 to 9 as a concrete protective wall.
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    同族专利:
    公开号 | 公开日
    AT520899A5|2019-08-15|
    DE102015100277A1|2016-07-14|
    WO2016110293A3|2016-11-24|
    WO2016110293A2|2016-07-14|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015100277.9A|DE102015100277A1|2015-01-09|2015-01-09|Concrete wall and manufacturing process by slipforming|
    PCT/DE2016/100006|WO2016110293A2|2015-01-09|2016-01-11|Monolithic concrete profile and production method by means of slip forming|
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