EP3851607A1 - Moyen de positionnement pour une couche de renfort textile doté d'un composant en béton, couche de renfort textile et composant en béton renforcé, comprenant un moyen de positionnement - Google Patents

Moyen de positionnement pour une couche de renfort textile doté d'un composant en béton, couche de renfort textile et composant en béton renforcé, comprenant un moyen de positionnement Download PDF

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Publication number
EP3851607A1
EP3851607A1 EP21152170.3A EP21152170A EP3851607A1 EP 3851607 A1 EP3851607 A1 EP 3851607A1 EP 21152170 A EP21152170 A EP 21152170A EP 3851607 A1 EP3851607 A1 EP 3851607A1
Authority
EP
European Patent Office
Prior art keywords
bolt
positioning means
reinforcement layer
spacer
concrete component
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
EP21152170.3A
Other languages
German (de)
English (en)
Inventor
Manfred Curbach
Oliver MOSIG
Alexander Schumann
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.)
Carbocon GmbH
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 EP3851607A1 publication Critical patent/EP3851607A1/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
    • 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
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • 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
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/203—Circular and spherical spacers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E04F13/04—Bases for plaster
    • E04F13/045—Means for fastening plaster-bases to a supporting structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements

Definitions

  • the invention relates to a positioning means for at least one textile reinforcement layer of a concrete component, a textile reinforcement layer and a reinforced concrete component, comprising a positioning means.
  • the textile reinforcement layer is designed in particular as a non-metallic reinforcement fabric, for example based on carbon fibers.
  • Positioning means for a textile reinforcement layer are known from the prior art. They are intended for selective support of one or more reinforcement layers against a formwork or form for concreting. Such positioning means are in the documents DE 20 2013 006 822 U1 , DE 10 2013 015 434 A1 and 10 2017 120 642 A1 described.
  • the ends of the positioning means which support the reinforcement layer with respect to the formwork and can therefore appear on the later concrete surface, have a minimal surface and, for this purpose, taper to a point, for example. Any kind of connection to the formwork is mostly undesirable; on the contrary, the requirement is that the concrete part should be detached from the formwork as simply as possible.
  • the positioning means known from the prior art are therefore not suitable for use in a permanent formwork or for attaching an additional concrete layer to an existing building element, especially on its underside, and if forces are diverted between the lost formwork or the existing building element in the additional building element Concrete layer and its reinforcement is provided.
  • the object is achieved by a positioning means for at least one textile reinforcement layer of a concrete component.
  • the positioning means comprises at least one bolt for mounting essentially perpendicular to the surface of a substrate and at least one spacer which is connected to the at least one bolt via a recess in the spacer and serves to position the reinforcement layer relative to the surface.
  • the expansion of the spacer in the plane of the surface is greater than a mesh size of the reinforcement layer.
  • the spacer can be locked in one position on the at least one bolt.
  • a first end of the at least one bolt is provided for insertion into a substrate for at least form-fitting anchoring, with force-fitting anchoring also being provided as an alternative or in addition.
  • the anchoring enables power to be transmitted into the ground.
  • the spacer or spacers can be screwed to the at least one bolt in the intended position, as a result of which the height of the reinforcement layer or layers with respect to the substrate or to one another can be adjusted.
  • the at least one bolt can be fastened in a recess, in particular a bore, in the subsurface.
  • the bolt can be screwed in or glued in.
  • a bolt is anchored in the old concrete, for example, and a spacer or a differently designed means according to the invention, such as. B. an anchor head, untwisted or a notch made, in which the reinforcement layer can also be positioned.
  • the reinforcement layers for example the non-metallic reinforcement mesh, are put through the mesh on the bolt. With several Layers, a further spacer is turned on between each layer.
  • the last textile layer is fixed by a spacer designed as an anchor head, also preferably equipped with an internal thread, which is larger than the mesh size of the reinforcement.
  • a perforated rail is used for linear fixation. This is inserted through the bolts and fixed with a fixative, e.g. B. nuts fixed.
  • the anchor head serves as a top cover and prevents the last layer of reinforcement from lifting off the bolts.
  • Another embodiment of the cover as an alternative to the anchor head is designed as an elongated perforated rail connected to several bolts, which extends over several meshes of the reinforcement layer.
  • the perforated rail is also an embodiment of the spacer.
  • the advantages of the invention lie in the possibility of a safe and simple anchoring and fixing of non-metallic reinforcement. This involves a combination of anchoring and creating a spacing, and several textile reinforcement layers can be fixed at the same time.
  • the anchoring parts can be non-metallic, e.g. B. made of CFRP.
  • CFRP non-metallic
  • other common materials are also contemplated, including steel.
  • the anchor head can be placed, in particular screwed, onto a second end of the at least one bolt. Further advantages are shown when working overhead, since the textile reinforcement layer is held by the anchoring, the positioning means according to the invention and not otherwise, e.g. B. must be held manually by an additional worker or an auxiliary device.
  • the reinforcement layer is mounted by means of positioning means according to one of claims 1 to 10 at a specified distance from a substrate.
  • At least one scrim is preferably provided as the reinforcement layer, but fabrics or other textiles, for example made from carbon, basalt or glass fibers, are also suitable.
  • the object of the invention is also achieved by a method for installing a textile reinforcement layer by means of a positioning means according to the invention on a substrate, in particular on an existing concrete component or on a permanent formwork.
  • the method provides the following steps: Inserting the at least a bolt in the ground, placement of at least one spacer, placement of the reinforcement layer and placement of the anchor head.
  • Another aspect of the present invention relates to a concrete component comprising a textile reinforcement layer and a positioning means.
  • the positioning means is designed according to the invention according to one of claims 1 to 10 and anchored directly to a substrate.
  • a particularly advantageous embodiment of the present invention provides that the subsurface belongs to an existing structural element and the concrete structural element comprises the structural element and a concrete-reinforced, textile-reinforced structural component layer. This means that existing components can be renovated or structurally upgraded.
  • the reinforcement lying far on the outside is particularly advantageous, as it does not require a minimum overlap due to the fact that no corrosion-prone metals are used.
  • the subsurface can also belong to a permanent formwork.
  • Fig. 1 shows a schematic perspective illustration of an embodiment of a concrete component 10 according to the invention with a plurality of spacers designed as anchor heads 8.
  • a bolt 4 is anchored in the substrate 3, for example old concrete of an existing building element, for power transmission. This can be done, for example, by gluing or by a thread.
  • a spacer designed as a spacer 5 and, at the top, a spacer designed as an anchor head 8 are applied to the bolt 4, in particular screwed onto the bolt 4, which has an external thread, through an internal thread made in a bore of the spacer.
  • the reinforcement layer 2 in particular a non-metallic reinforcement fabric, is inserted through the mesh onto the bolt 4 after the first spacer 5 has been applied. If there are several layers of reinforcement 2, a further spacer 5 is turned on between each layer.
  • the last reinforcement layer 2 is fixed by an anchor head 1, which also has an internal thread and which, like the spacers 5, is larger in diameter than the mesh size of the reinforcement layer 2.
  • a perforated rail 6 is used for the fixation. This is inserted through the bolts 4 and fixed with nuts or split pins, for example.
  • Fig. 2 shows a schematic perspective illustration of an embodiment of a concrete component 10 according to the invention as in FIG Fig. 1 , but with a spacer designed as a perforated rail 6.
  • the elongated cover through the perforated rail 6 enables greater variability in the mesh size of the reinforcement layer 2.
  • Fig. 3 shows a schematic sectional view of an embodiment of a concrete component 10 according to the invention with a perforated rail 6 and bolt 4 screwed into a recess 7.
  • the distance between the reinforcement layer 2 and the substrate 3, here the surface of an existing component, is defined by the spacer 5, while the Reinforcement layer 2 is prevented from the bolt 4 by the anchor head 8.
  • Fig. 4 shows a schematic sectional illustration of an embodiment of a concrete component 10 according to the invention, as also in FIG Fig. 3 , but in an embodiment with several spacers 5 and several reinforcement layers 2.
  • a spacer 5 is provided between the substrate 3 and between the first and second reinforcement layers 2.
  • the anchor head 8 forms the upper termination on the bolt 4.
  • Fig. 5 shows a schematic sectional illustration of an embodiment of a concrete component 10 according to the invention with several spacers 5 and several reinforcement layers 2, as also in FIG Fig. 4 , but here in a detailed representation.
  • a spacer 5 is provided between the substrate 3 and between the first and second reinforcement layers 2, which spacers are supported on projections protruding from the surface on both sides. This ensures the intended distance between the reinforcement layer 2 and the substrate 3 without the reinforcement layer 2 being stressed, neither by pressure nor, due to a recess between the projections in the spacer 5, by bending.
  • the anchor head 8 which at the same time covers and protects the thread of the bolt 8, forms the end.
  • the bolt 4 is different from the Figures 3 and 4 not screwed into the recess 7, but glued in place. This simplifies production and, in the case of certain materials, also increases the strength, which leads to increased power transmission.
  • the positioning means 1 is designed differently.
  • the positioning means 1 consists of a hollow bolt 4 ', preferably consisting of a plastic or the like, which can be made either full-walled or open-meshed.
  • the positioning means 1 is adapted to the reinforcement and to the scrim in terms of geometry and length.
  • the positioning means 1 is introduced into the meshes of the reinforcement layer 2 in the reinforcement process, whereby the reinforcement layer 2 is aligned with one another in the case of more than one reinforcement layer 2.
  • notches 5 serving as spacers, also referred to as depressions or recesses, which, in addition to aligning the reinforcement layers 2 on top of one another, also define the exact thickness of the reinforcement of the component on the substrate 3. In this way, the exact concrete cover is also guaranteed during reinforcement.
  • Positioning means 1 preferably consists of a non-metallic material (e.g. plastic or the like).
  • the height of the notches 5 'in relation to the substrate 3 (distance A) can take place by means of a uniform grid dimension (e.g. 5 mm), as a result of which the positioning means 1 can be used universally.
  • a property that the positioning means 1 must have for setting the exact height of the reinforcement layer 2 is the plastic deformability of the bolt 4 or 4 'and that the cross section of the positioning means 1 is minimally larger than the clear mesh size. So the positioning means 1 or the bolt 4 or 4 'by z. B. an impression can be changed in its cross-sectional shape and at the same time in its length. The cross section becomes smaller and the length of the positioning means 1 increases minimally. Specifically, this means that the positioning means 1 is sufficiently "soft" that a change in shape is possible (plastics or elastomers, including rubber, are suitable).
  • the position holder will taper and thus fit into the mesh size of the reinforcement layer 2.
  • tolerances can be compensated for during installation and, due to the notches 5 'in connection with the indentation, the reinforcement layer 2 automatically fits into these notches 5'. Simple installation can thus be guaranteed.
  • the further reinforcement layer 2, which is subsequently threaded onto the positioning means 1, can likewise be threaded onto the positioning means 1 and guided into the notches 5 'due to the deformability of the positioning means 1. This creates a simple but efficient installation system on the construction site.
  • Fig. 7 shows a schematic representation in views from the side of an embodiment of a deformable bolt 4 and views from above during the change in shape, here embodied as a taper 13 at the end of the bolt 4.
  • the illustration on the left shows that there is an elastic deformation, because after the deformation the bolt 4 returns to its original diameter.
  • the position holder and the cross-section are in their original state (state I in the top left illustration).
  • This is followed by a tapering of the cross-section through the action of mechanical force.
  • the cross section in the area of the taper 13 becomes smaller, but the length of the bolt 4 increases.
  • the bolt 4 fits into the intended mesh spacing of the reinforcement layer 2. This allows the reinforcement layer 2 to be optimally aligned, since the bolt 4 then returns to its original shape and thus automatically aligns and fixes the reinforcement layer 2, since the mesh size of the reinforcement layer 2 and the bolt 4 are coordinated. Thus, several layers of reinforcement 2 arranged one above the other can also be aligned later.
  • Fig. 8 shows a schematic sectional illustration of an embodiment of a concrete component 10 according to the invention with an open-meshed wall of the hollow bolt 4 '.
  • the bolt 4 ' is designed as a hollow, open-mesh structure. That is, the wall of the hollow bolt 4 'has a lattice structure.
  • the cavities, the interior of the bolt 4 ' can be filled with concrete through the open-mesh structure. This does not result in a weakening of the reinforcement in the area of the bolt 4 '.
  • the open-mesh structure can preferably consist of plastic or the like or of textile scrims. The aforementioned characteristics remain.
  • Fig. 9 shows a schematic sectional illustration of an embodiment of a concrete component 10 according to the invention with anchored bolt 4 '. Another function is added to the position holder. Since the bolt 4 'can be made both full-walled and open-meshed, the bolt 4' can also be used as a subsequent dowel. This is possible with the full-walled variant because no concrete can penetrate into the interior of the bolt 4 '.
  • the bolt 4 ′ which at the same time forms the positioning means 1 and carries the reinforcement layer 2, is then placed on the sealing cover 12.
  • the reinforcement layer 2 can then, as described above, be applied from the upper end of the bolt 4 ′ in the direction of the surface of the substrate 3.
  • a conventional dowel 11 both metallic as well as non-metallic dowels can be used into which the bolt 4 'is inserted.
  • the cavity, the bore 14, is subsequently pressed or glued. This creates a firm bond between dowel 11 and substrate 3.
  • Fig. 10 shows a schematic representation of an embodiment of a sealing cover 12 in section and as a view from above.
  • Fig. 11 shows a schematic sectional illustration of a further embodiment of a concrete component 10 according to the invention in a second embodiment with a bolt 4 'pegged in the substrate 3.
  • the dowel is subsequently screwed in or nailed to the substrate (e.g. shot in), but not glued or pressed.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP21152170.3A 2020-01-19 2021-01-18 Moyen de positionnement pour une couche de renfort textile doté d'un composant en béton, couche de renfort textile et composant en béton renforcé, comprenant un moyen de positionnement Pending EP3851607A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020101125.3A DE102020101125A1 (de) 2020-01-19 2020-01-19 Positioniermittel für eine textile Bewehrungslage eines Betonbauteils, eine textile Bewehrungslage und ein bewehrtes Betonbauteil, umfassend ein Positioniermittel

Publications (1)

Publication Number Publication Date
EP3851607A1 true EP3851607A1 (fr) 2021-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21152170.3A Pending EP3851607A1 (fr) 2020-01-19 2021-01-18 Moyen de positionnement pour une couche de renfort textile doté d'un composant en béton, couche de renfort textile et composant en béton renforcé, comprenant un moyen de positionnement

Country Status (2)

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EP (1) EP3851607A1 (fr)
DE (1) DE102020101125A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102286562B1 (ko) * 2020-11-03 2021-08-06 한국건설기술연구원 그리드 보강을 위한 스페이서 일체형 리테이닝 클립을 구비한 그리드 고정장치 및 이를 이용한 그리드 고정 방법

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8231016U1 (de) * 1982-11-05 1983-05-05 Pape, Hans, Dr.-Ing., 4600 Dortmund Als abstandshalter dienender putznagel
DE8512251U1 (de) * 1985-04-25 1985-06-13 Dracholin GmbH, 7430 Metzingen Wandauflageplatte aus Dämmaterial
DE29909236U1 (de) * 1999-05-27 1999-08-05 DÜNA Befestigungstechnik GmbH, 59823 Arnsberg Putzfassadendübel
KR200231221Y1 (ko) 2001-02-08 2001-07-19 (주)삼우종합건축사사무소 철근 배근 간격 조절이 용이한 철근 받침대
DE202013006822U1 (de) 2013-07-25 2013-08-20 Technische Universität Dresden Abstandhalter für mit einem Basismaterial herzustellende Bauteile mit textilen Bewehrungslagen
DE102013015434A1 (de) 2013-09-18 2015-04-02 Groz-Beckert Kg Abstandshalter für eine Bewehrungslage, Bewehrungsanordnung für ein Betonbauteil sowie Verfahren zur Herstellung einer Bewehrungsanordnung
DE102017120642A1 (de) 2017-09-07 2019-03-07 Osram Opto Semiconductors Gmbh Leuchtdiode, Verwendung einer Leuchtdiode, Verfahren zum Betreiben einer Leuchtdiode und Verfahren zur Herstellung einer Leuchtdiode

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009043006B4 (de) 2009-09-28 2018-02-15 Norbert Uhlmann Fußboden und Verfahren zur Herstellung oder Sanierung von Fußböden
ES2418729B1 (es) 2012-01-10 2014-05-21 Carlos Fradera Pellicer Método para la fabricación de un elemento arquitectónico, y elemento arquitectónico correspondiente
US11142919B2 (en) 2018-03-16 2021-10-12 Saudi Arabian Oil Company Supporting formwork to rebar for concrete forms

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8231016U1 (de) * 1982-11-05 1983-05-05 Pape, Hans, Dr.-Ing., 4600 Dortmund Als abstandshalter dienender putznagel
DE8512251U1 (de) * 1985-04-25 1985-06-13 Dracholin GmbH, 7430 Metzingen Wandauflageplatte aus Dämmaterial
DE29909236U1 (de) * 1999-05-27 1999-08-05 DÜNA Befestigungstechnik GmbH, 59823 Arnsberg Putzfassadendübel
KR200231221Y1 (ko) 2001-02-08 2001-07-19 (주)삼우종합건축사사무소 철근 배근 간격 조절이 용이한 철근 받침대
DE202013006822U1 (de) 2013-07-25 2013-08-20 Technische Universität Dresden Abstandhalter für mit einem Basismaterial herzustellende Bauteile mit textilen Bewehrungslagen
DE102013015434A1 (de) 2013-09-18 2015-04-02 Groz-Beckert Kg Abstandshalter für eine Bewehrungslage, Bewehrungsanordnung für ein Betonbauteil sowie Verfahren zur Herstellung einer Bewehrungsanordnung
DE102017120642A1 (de) 2017-09-07 2019-03-07 Osram Opto Semiconductors Gmbh Leuchtdiode, Verwendung einer Leuchtdiode, Verfahren zum Betreiben einer Leuchtdiode und Verfahren zur Herstellung einer Leuchtdiode

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