EP4036342A1 - Dispositif de support d'armature, agencement d'armature, dispositif et procédé de fabrication d'un agencement d'armature et procédé de fabrication d'un composant en béton - Google Patents

Dispositif de support d'armature, agencement d'armature, dispositif et procédé de fabrication d'un agencement d'armature et procédé de fabrication d'un composant en béton Download PDF

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Publication number
EP4036342A1
EP4036342A1 EP22151709.7A EP22151709A EP4036342A1 EP 4036342 A1 EP4036342 A1 EP 4036342A1 EP 22151709 A EP22151709 A EP 22151709A EP 4036342 A1 EP4036342 A1 EP 4036342A1
Authority
EP
European Patent Office
Prior art keywords
yarn
reinforcement
receiving structure
support device
holding devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22151709.7A
Other languages
German (de)
English (en)
Inventor
Dominik SCHLÜTER
Maximilian May
Manfred Curbach
Steffen Rittner
Ludwig Gawer
Maria Patricia GARIBALDI
Iurii VAKALIUK
Maximilian Krämer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universitaet Dresden
Original Assignee
Technische Universitaet Dresden
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universitaet Dresden filed Critical Technische Universitaet Dresden
Publication of EP4036342A1 publication Critical patent/EP4036342A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form

Definitions

  • reinforcement for example made of steel
  • This formwork is then filled with concrete, resulting in a reinforced concrete component.
  • the reinforcement often consists of rods or grids, which have little flexibility in shape or high rigidity. This simplifies their manufacture and position securing during the concreting process.
  • the high rigidity of the reinforcement means that it can only be placed linearly and therefore has to follow straight lines.
  • the reinforcement layout is often planned and executed in terms of the simplest possible manual installation. This also means that the reinforcement is not optimally used in terms of structural mechanics in terms of its shape and position.
  • Textile reinforcements made of textile yarns such as carbon yarns, glass filament yarns or similar, allow flexible reinforcement, provided the surrounding matrix is not too stiff.
  • biaxial fabrics made of carbon or glass are used. These scrims are held in place using spacers.
  • rods made of carbon or glass are used, which are held in the intended position with spacers, wire or other holding devices, analogous to reinforced concrete.
  • the pamphlet EP 3 418 465 A1 describes a method for producing a three-dimensional building material component 20, see there 11 , which is also suitable for forming a concave and/or convex curved surface.
  • a plurality of spacer bodies 32 are arranged in a formwork 30 .
  • a textile reinforcement 21 is supported on the spacer bodies 32 so that the textile reinforcement 21 has a defined position within a formwork interior 30a of the formwork 30 .
  • the spacer bodies 32 have to be arranged in a complex manner and connected individually with a connecting element 34, cf. figures 13 and 14 and the associated description in Appendices [0040] to [0044]. In addition, the spacer bodies 32 can only hold the yarn that has been laid on securely if it is under sufficiently high tension.
  • the preferred yarn holding devices also comprise a foot part, designed for connection to a receiving structure formed at least two-dimensionally in the first plane at any assembly location on its surface in the first plane. At each node, formed by a yarn holding device, the yarn can change its direction. In this way, a variable axial yarn placement is made possible.
  • the yarn holding devices are also used to create a connection between the receiving structure and any built-in parts (e.g. empty tubes, capillary tubes, cables, anchoring elements).
  • any built-in parts e.g. empty tubes, capillary tubes, cables, anchoring elements.
  • special brackets such. B. a cable holder can be used advantageously.
  • the previously mentioned sonotrodes are used for ultrasonic welding to create the connections. They are set into resonant vibrations by introducing high-frequency mechanical vibrations and thus temporarily or permanently weld the yarn holding device to the receiving structure.
  • the yarn holding device can also be bonded, screwed or magnetically connected to the Recording structure and connected to the yarn. Mixed forms can also occur.
  • the height of the yarn holding device but in particular the dimension between the underside of the foot part and a yarn support of the yarn holding device, specifies the distance between the textile reinforcement, which is formed from the yarn, and the receiving structure.
  • the yarn is at this height after concreting.
  • the height of the twine holding device can be changed, it determines the useful static height of the reinforcement and thus fundamentally influences the load-bearing behavior of the reinforced concrete element.
  • the twine holding devices remain in the concrete component after concreting.
  • a detachable connection can be made between the twine holding device and the receiving structure.
  • ultrasonic welding has proven to be advantageous.
  • at least the head part consists of a thermoplastic material, preferably PLA (polyatic acid).
  • a water-soluble intermediate layer which creates a detachable connection between the yarn holding device and the receiving structure, is associated with particular advantages.
  • This is arranged between the receiving structure and the twine holding device and is designed so that the intermediate layer dissolves as a result of the entry of moisture, in particular during concreting, and the connection with the receiving structure is released, so that the connection is only used for transport and securing the position during concreting.
  • the foot part has the intermediate layer on its underside, so that it is in two parts and consists of at least two different materials.
  • the intermediate layer consists of a weldable material, preferably PVA, polyvinyl alcohol, with which the yarn holding device is welded to the receiving structure, preferably by ultrasonic welding.
  • a reinforcement arrangement comprising at least one textile reinforcement, formed at least from one yarn.
  • the reinforcement arrangement further comprises the Reinforcement support device, in particular the receiving structure and the yarn holding devices.
  • the receiving structure is designed as a thin-walled plate, for example made of metal, wood or plastic, this has proven to be particularly advantageous.
  • the slabs can correspond to the size of the future concrete component and can thus assume dimensions of more than 5 m x 5 m. If the panels are to be transported, it is advisable to divide them into sections. In this case, the sections are connected to each other directly on the formwork before concreting. Detachable click connections have proven to be useful.
  • the receiving structure can contain recesses or the like, which are introduced, for example, in a deep-drawing process or by stamping. According to an alternative embodiment, the receiving structure simultaneously represents part of the formwork.
  • the yarn holding devices and connecting elements which connect the yarn and built-in parts to the receiving structure are attached to the receiving structure.
  • the reinforcement connected to the receiving structure can be designed as a simple yarn or as a prefabricated scrim.
  • the simple yarn and the prefabricated structure are referred to as yarn in the present description, since the yarn contained in the structure is also held in the yarn holding devices, even if not laid down as a single yarn.
  • the type of filing thus changes with the scrim, since this only has to be laid over the yarn holding devices and connected to them.
  • This alternative method is therefore not described in more detail, but is also covered by the invention, since there is undoubtedly a way for the person skilled in the art to rework this solution.
  • the reinforcement and the built-in parts are secured in their position. Both when pouring the structure with a concrete matrix, also referred to as concreting below and in the above description, and during transport (within a plant or between plants), the position of the built-in parts and the yarn remains secured relative to the receiving structure.
  • a reinforcement arrangement described in more detail below, consisting of receiving structure, reinforcement and installation parts, is then placed on the formwork and releasably connected to the formwork.
  • the connection can be between the formwork and the receiving structure created by bonding, magnetically or by holding down and maintained during concreting.
  • the receiving structure can be manufactured or assembled in different sizes. To produce larger components, several receiving structures are used, which are placed next to each other on the formwork. In this case, care must be taken to ensure that the reinforcement has a sufficient lap length to the adjacent reinforcement so that the tensile forces can be transferred in the reinforcement. Tests have shown that an overlap length of 1-5 cm is suitable and sufficient.
  • the holding device is constructed in the same way as the yarn holding device, in particular as a plastic holder, detachable and non-detachable.
  • the reinforcement yarn and the necessary built-in parts are connected to the receiving structure in a detachable or non-detachable manner.
  • the receiving structure is designed for detachment from a concrete part, in which the reinforcement arrangement is concreted, after hardening.
  • the detachment is achieved by means of an intermediate layer.
  • the receiving structure is designed to remain in the concrete part as permanent formwork.
  • a further aspect of the present invention relates to a device for producing a reinforcement arrangement according to the above description, the device comprising at least one robot arm and/or a portal device which has at least one working head which can be moved at least in two dimensions.
  • the robot and/or the portal device comprise a device for positioning the yarn holding device on the receiving structure and/or a device for yarn laying for connecting the yarn to the yarn holding devices in two or three dimensions.
  • the device for positioning the yarn holding device and/or the device for depositing the yarn for connecting the yarn to the yarn holding devices are arranged on the at least one working head of the robot arm or the portal device.
  • the devices are suitable for connecting the yarn to the yarn holding devices in two or three dimensions for flat and curved surfaces.
  • the automation unit also consists of a storage unit that is attached to the working head of the robot arm or the portal device.
  • This in turn includes, among other things, a device for continuous yarn take-off, which supplies the yarn depending on the laying speed and yarn requirement. This can be achieved, for example, by driving the coil body.
  • a subsequent yarn tensioner or yarn store in the form of a compensation device has proven to be very advantageous in the case of continuous depositing processes with different yarn requirements.
  • the yarn feed is made available by means of control technology in comparison to the yarn requirement, i. H. the required twine length is calculated and supplied by the drive unit with a previously defined twine tension for optimal placement.
  • the yarn can be pulled off a spool that is attached directly to the storage unit, to the portal or to an external spool holder.
  • the storage unit includes a connection unit that connects both the yarn holding device to the yarn and the yarn holding device to the receiving structure.
  • the yarn In order for the yarn to be able to be guided freely, i.e. variably axially, it must be flexible and of low flexural rigidity. The stiffness must be adjusted in such a way that the yarn can be guided around small radii without returning to its original position and without breaking. Despite low rigidity, sufficient load-bearing capacity and safety (durability, heat resistance) must be guaranteed. As a rule, the reinforcement yarn contains a coating (also known as impregnation or impregnation), which contributes to the load-bearing capacity and bondability.
  • a coating also known as impregnation or impregnation
  • thermoplastic polymer matrix has proven to be particularly advantageous as a coating in order to obtain reduced yarn stiffness during laying. Due to the material properties, a reversibly melt or soften consolidated yarn in the subsequent laying process at elevated temperature, as described above. In this way, small depositing radii of less than 5 cm can be achieved. After laying and heating, the yarn has the same properties again and the material parameters are not deteriorated in areas where the yarn was heated.
  • the laying process described with thermal heating of the yarn allows the use of special polymers, which improve the material properties through thermal treatment (heating). As a result of the tempering, i.e.
  • the receiving structure is placed directly on the formwork or is already part or the bottom of the formwork. Reinforcement and built-in parts are connected to the receiving structure in the formwork or directly to the formwork using the twine holding devices.
  • the robot arm 14 has a working head, a complex working head 26 in the exemplary embodiment shown, on its end remote from the portal device 16 .
  • This is not only intended to place yarn holding devices, here rivet yarn holding devices 40, on the receiving structure 34 and to form the reinforcement support device 1 and immediately afterwards to deposit yarn 32 (here preferably a towpreg) on the rivet yarn holding devices 40.
  • a complex working head 26 it has a yarn holder storage 27 (cf 7 ) in which a supply of rivet yarn holders 40 is kept.
  • the complex working head 26 includes a yarn spool 28 from which the yarn 32 for depositing the textile reinforcement 29 and for forming the reinforcement arrangement 30 is unwound.
  • the illustration indicates the preferred process sequence in which the yarn 32 is laid down immediately after a riveting yarn holding device 40 has been laid down.
  • all required yarn holding devices can also first be attached and then the yarn 32 can be laid down.
  • FIG. 2 schematically shows a side view of an embodiment of a device 10 according to the invention for the production of a reinforcement arrangement 30 with a robot arm 14 and a complex working head 26 as well as the other components, such as she already in 1 have been described.
  • the high degree of flexibility in the orientation of the complex working head 26 arranged on the robot arm 14 can be seen. This makes it possible to attach the riveting thread holding devices 40 to the required locations and in the required orientations without any problems even when the receiving structure 34 is deformed about two axes.
  • This makes it possible to produce a reinforcement arrangement 30 which is also able to follow such a heavily deformed receiving structure 34 and enables the production of individually and load-dependently reinforced, multiaxially shaped concrete components.
  • FIGS Figures 3 and 4 schematically show a view from the front and a side view of a further embodiment of a device 10 according to the invention for the production of a reinforcement arrangement 30 with a robot arm 14 and a lightweight working head 20.
  • a light-duty head 20 is used here.
  • this has no stores for material to be deposited, but rather both the riveting thread holding devices 40 and the thread 32 are fed over the robot arm 14.
  • the corresponding stores for example the yarn spool 28, are arranged above the portal device 16. The yarn 32 is then fed via a yarn feed 24.
  • figure 5 shows a schematic view from the front of a further embodiment of a device 10 according to the invention with a portal device 16 for producing a reinforcement support device 1 and then a reinforcement arrangement 30, the robot arm 14 being dispensed with because of the exclusively two-dimensional placement of riveting thread holding devices 40.
  • the complex working head 26 is used, which accommodates the thread spool 28 and also the riveting thread holding devices 40 .
  • the receiving structure 34 placed completely flat on a work table here is provided with the riveting thread holding devices 40 by the complex working head 26 and subsequently the textile reinforcement 29 for forming the reinforcement arrangement 30 .
  • the rivet yarn holding devices 40 instead of the rivet yarn holding devices 40, other yarn holding devices can also be used, for example those as shown in FIGS Figures 9 to 13 to be discribed.
  • FIG. 6 shows schematically a detailed view of an embodiment of a light-duty head 20 of a device according to the invention for producing a reinforcement support device 1 and a reinforcement arrangement 30 by depositing the textile reinforcement 29 on the reinforcement support device 1, which was formed from a receiving structure 34 previously provided with rivet yarn holding devices 40.
  • the light-duty head 20 has a yarn holding feed 22, from which the individual riveting yarn holding devices 40 are also fed from a store.
  • a welding device 23 is provided for connecting it to the receiving structure 34, preferably in the form of a device for ultrasonic welding.
  • a heating device 25 is arranged in the area over which the yarn 32 is guided within the light-duty head 20 and subsequently deposited on the riveting yarn holding devices 40 . This is used, for example, when the yarn 32 is to be laid in tight radii.
  • the heating of the yarn 32 reduces its stiffness, particularly if it comprises a thermoplastic matrix material, and makes it easier to wrap around tight radii without damage.
  • the yarn 32 has cooled down again, it resumes its previous rigidity and gives the textile reinforcement 29 or the reinforcement arrangement 30 as a whole the appropriate strength as is required, for example, for the concreting process or transport.
  • FIG. 7 shows schematically a detailed view of an embodiment of a complex working head 26 of a device according to the invention for the production of a reinforcement support device 1 and a reinforcement arrangement 30.
  • the yarn spool 28 and the yarn holder storage 27 are arranged inside the complex working head 26 .
  • the materials are conveyed as required to the tip pointing towards the receiving structure 34 and processed further there.
  • the welding device 23 is provided for fastening the riveting thread holding devices 40 to the receiving structure 34, with the thread 32 then being deposited over the riveting thread holding devices 40 fastened in this way.
  • a heater 25 is provided.
  • FIG. 8 shows a schematic perspective view of an embodiment of a yarn holding device according to the invention, here a rivet yarn holding device 40.
  • This has a rivet foot 44 on its lower side in the illustration, which is provided for connection to the receiving structure 34. This is guided through an opening in the receiving structure 34 and then deformed in such a way that the riveting yarn holding devices 40 are fastened to the receiving structure 34 .
  • the rivet thread holding device 40 On the side facing away from the rivet foot 44, the rivet thread holding device 40 has a thread crown 42 around which the thread can be placed and deflected in different directions in a simple manner.
  • the yarn can be subsequently fixed or at least secured in the yarn crown 42 by welding the grooves of the yarn crown 42 shut.
  • a sonotrode and the method of ultrasonic welding are also preferably used for this purpose.
  • FIG. 9 shows a schematic perspective view of an embodiment of a yarn holding device according to the invention, here a flat yarn holding device 46. While the yarn crown 42 is designed in the same way as the previously described rivet yarn holding device 40, the attachment is provided in a completely different way. Instead of riveting from the rear, planar welding is provided between a flat base 48 and the receiving structure 34 . A hollow-cylindrical sonotrode is preferably used for this purpose, with which the required connection is made using ultrasonic welding.
  • FIG. 10 shows a schematic perspective view of an embodiment of a cable holder 50 with which lines or cables laid on the receiving structure 34 can be fixed there.
  • a flat foot 48 is also provided for this purpose, which can be welded to the receiving structure 34
  • FIG. 12 shows a schematic perspective view of an embodiment of a yarn holding device according to the invention, here a deflection yarn holding device 56. Similar to the click yarn holding device 52, this provides improved security against the yarn slipping off undesirably by being securely held in the groove 57 of the deflecting yarn holding device 56 after it has been wrapped around it can, at least as long as there is sufficient yarn tension.
  • FIG. 13 shows a schematic perspective view of an embodiment of a yarn holding device according to the invention, here a temporary yarn holding device 58.
  • a temporary yarn holding device 58 This is particularly suitable if the receiving structure 34 is not to remain on the concrete component as lost formwork, but is to be detached afterwards. Since the twine holding devices generally remain in the concrete component, a separation between these and the receiving structure 34 must be achieved. This is done by a release layer 60, which is water-soluble, for example, and is dissolved by means of water after the concrete component has hardened. Once the release liner 60 is dissolved, the containment structure 34 can be easily peeled away from the concrete member.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Moulding By Coating Moulds (AREA)
EP22151709.7A 2021-01-28 2022-01-17 Dispositif de support d'armature, agencement d'armature, dispositif et procédé de fabrication d'un agencement d'armature et procédé de fabrication d'un composant en béton Pending EP4036342A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021101881.1A DE102021101881A1 (de) 2021-01-28 2021-01-28 Garnhalteeinrichtung, Bewehrungsanordnung, Vorrichtung und Verfahren zur Herstellung einer Bewehrungsanordnung und Verfahren zur Herstellung eines Betonbauteils

Publications (1)

Publication Number Publication Date
EP4036342A1 true EP4036342A1 (fr) 2022-08-03

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EP22151709.7A Pending EP4036342A1 (fr) 2021-01-28 2022-01-17 Dispositif de support d'armature, agencement d'armature, dispositif et procédé de fabrication d'un agencement d'armature et procédé de fabrication d'un composant en béton

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EP (1) EP4036342A1 (fr)
DE (1) DE102021101881A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05319892A (ja) * 1992-05-22 1993-12-03 C C A Kk 模様入り成形体の製造方法
JP2000064508A (ja) 1998-08-24 2000-02-29 Hayashi Kenzai:Kk 鉄筋載置台およびその製造方法
JP2006219895A (ja) 2005-02-10 2006-08-24 Fukoku Sekiyu Kk 鉄筋コンクリート用スペーサ
CN202658807U (zh) 2012-06-19 2013-01-09 天颂建设集团有限公司 一种高度可调节的塑料垫块
WO2014127426A1 (fr) * 2013-02-21 2014-08-28 Laing O'rourke Australia Pty Limited Procédé pour mouler un élément de construction
WO2015065936A2 (fr) * 2013-10-30 2015-05-07 Boyd Iv R Platt Fabrication additive de bâtiments et d'autres structures
DE102016100455A1 (de) 2015-01-13 2016-07-14 Technische Universität Dresden Textile Bewehrung und deren Herstellung
DE102015104830A1 (de) 2015-03-28 2016-09-29 Technische Universität Dresden Abstandhalter für Textilbewehrung
EP3418465A1 (fr) 2017-06-23 2018-12-26 Groz-Beckert KG Procédé de fabrication d'un élément constitutif en béton armé en textile et dispositif de serrage associé
US20210062508A1 (en) * 2019-09-04 2021-03-04 Korea Institute Of Civil Engineering And Building Technology Anchor pin for placing shotcrete and fixing textile grid and method of constructing textile grid reinforced shotcrete using the same

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05319892A (ja) * 1992-05-22 1993-12-03 C C A Kk 模様入り成形体の製造方法
JP2000064508A (ja) 1998-08-24 2000-02-29 Hayashi Kenzai:Kk 鉄筋載置台およびその製造方法
JP2006219895A (ja) 2005-02-10 2006-08-24 Fukoku Sekiyu Kk 鉄筋コンクリート用スペーサ
CN202658807U (zh) 2012-06-19 2013-01-09 天颂建设集团有限公司 一种高度可调节的塑料垫块
WO2014127426A1 (fr) * 2013-02-21 2014-08-28 Laing O'rourke Australia Pty Limited Procédé pour mouler un élément de construction
WO2015065936A2 (fr) * 2013-10-30 2015-05-07 Boyd Iv R Platt Fabrication additive de bâtiments et d'autres structures
DE102016100455A1 (de) 2015-01-13 2016-07-14 Technische Universität Dresden Textile Bewehrung und deren Herstellung
DE102015104830A1 (de) 2015-03-28 2016-09-29 Technische Universität Dresden Abstandhalter für Textilbewehrung
EP3418465A1 (fr) 2017-06-23 2018-12-26 Groz-Beckert KG Procédé de fabrication d'un élément constitutif en béton armé en textile et dispositif de serrage associé
US20210062508A1 (en) * 2019-09-04 2021-03-04 Korea Institute Of Civil Engineering And Building Technology Anchor pin for placing shotcrete and fixing textile grid and method of constructing textile grid reinforced shotcrete using the same

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