EP2047046B1 - Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort - Google Patents

Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort Download PDF

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Publication number
EP2047046B1
EP2047046B1 EP07787774A EP07787774A EP2047046B1 EP 2047046 B1 EP2047046 B1 EP 2047046B1 EP 07787774 A EP07787774 A EP 07787774A EP 07787774 A EP07787774 A EP 07787774A EP 2047046 B1 EP2047046 B1 EP 2047046B1
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EP
European Patent Office
Prior art keywords
reinforcing element
profile
component
plane
element according
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.)
Active
Application number
EP07787774A
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German (de)
English (en)
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EP2047046A1 (fr
Inventor
Reto Clénin
Albert Maria Vodermayer
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.)
Sika Technology AG
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Sika Technology AG
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Filing date
Publication date
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Priority to EP07787774A priority Critical patent/EP2047046B1/fr
Publication of EP2047046A1 publication Critical patent/EP2047046A1/fr
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    • 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
    • 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
    • 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
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements

Definitions

  • the invention relates to a reinforcing element, as it can be used preferably for stabilizing and reinforcing components on buildings, a method for producing such a reinforcing element and a component equipped with a reinforcing element.
  • Reinforcing elements of the type in question here are on the one hand in a new building of considerable importance, for example, to ensure the seismic safety of the building.
  • older buildings can be retrofitted with such reinforcing elements, because a component to be reinforced, for example, due to excessive stresses damage that must be corrected.
  • materials with high tensile strength for the reinforcement of components.
  • fiber-reinforced plastics are particularly suitable. These have in addition to the high tensile strength mentioned also a very low weight and are easy to handle.
  • fiber-reinforced plastics can be processed very easily. Subsequent reinforcement of reinforced concrete is thus possible without difficulty.
  • CFRP materials Carbon fiber-reinforced plastics (CFRP materials), for example, can be used in lamellar form for the transverse reinforcement of bridges, for increasing the payload of ceilings and for stiffening wooden structures. Columns and pillars are also secured with CFRP laminates only a few millimeters thick.
  • the subsequent steel reinforcement of components in the construction sector is characterized by a very complex production. Furthermore, this sometimes results in considerable corrosion problems. Due to the relatively high weight of a steel reinforcement, the applications are difficult, that is, the adaptation to the component is not readily possible. In addition, optical impairments result from such steel reinforcements, which are undesirable for certain components of buildings.
  • a reinforcing element according to the preamble of claim 1 is in WO 01/51736 A described.
  • the invention has for its object to provide reinforcing elements for reinforcing components, which avoid the disadvantages of previous reinforcing elements.
  • a method is provided which allows the production of such a reinforcing element.
  • the fibers of the reinforcing element is hardly loaded and stretched by the forming process, so that pre-damage within the reinforcing element can be effectively avoided.
  • the reinforcing element acts like a free tension member without composite. It can be used both to prevent fractures of components in the construction sector, as well as to prevent these components as a precaution from damage to protect themselves against aging processes.
  • the reinforcing element according to the invention makes it possible to increase the load capacity of the components equipped with this reinforcing element.
  • the reinforcing element can be used flexibly and can be provided without great effort on the components to be reinforced.
  • the reinforcing element according to the invention can be brought into the desired shape by a forming process before it is fastened to a component.
  • a reinforcing element is available, which can be placed directly on the component to be amplified and connected to this.
  • the reinforcing element can be prefabricated, the production cost is not incurred in the construction phase, so not on site on the building, so that this results in the construction phase considerable time and cost advantages.
  • the profile may be a flat profile, a U-profile, a T-profile or an L-profile. Decisive for the choice of the profile is exclusively to be achieved by means of the reinforcing element strength and adaptability to the component to be reinforced.
  • the reinforcing element is attachable at an angle ⁇ with respect to the longitudinal extent and thus fulfills the general inventive concept.
  • a component in the context of the present invention are in particular structures, parts of structures or beams to be understood as parts of buildings in the construction sector.
  • the said beams are provided on reinforced concrete ceilings, bridge girders, for example in the longitudinal and / or transverse direction and serve, for example, the reinforcement of wall outbreaks or wall openings.
  • a reinforcing element according to the invention can be used when displacing falls, such as window or door lintels.
  • the diversity of the present applications also shows the possibilities of choosing different cross-sections of such a component. So it may have a polygonal or cycloid cross sections.
  • the reinforcing element can have an anchoring part at least at one of its ends. This anchoring part serves for additional attachment of the reinforcing element to the component to be reinforced.
  • the anchoring part can proceed from the cross-section of the profile, starting in a polygonal or cycloidal cross-section.
  • the anchoring part has a polygonal or cycloidal cross-section.
  • the anchoring part is made Stationaryrig. Multi-limbed here means that the end of the anchoring part into individual segments or sections is divided or in the simplest case has at least one recess. This can be used, for example, to receive a fastener or to guide such a fastener through the thus formed openings or recesses.
  • the anchoring part has a geometry suitable for receiving or carrying out a fastening element.
  • a fastener may represent a dowel, a screw, a rivet or a similar means. This must only be suitable to produce a detachable or permanently fixed connection between the reinforcing element and the component to be reinforced in the region of the anchoring part.
  • the anchoring part can be inserted into a recess of the component.
  • a cohesive connection can be, for example, an adhesive connection. If the reinforcing element is produced from thermoplastic or thermosetting matrix resin, then this is liquid in the raw state and solidifies during or after processing. The matrix resin is applied to the component to be reinforced and integrally bonds to it by hardening. The connection thus created is weather-resistant and corresponds to the requirements placed on the component to be reinforced.
  • the reinforcing element is formed by high-modulus carbon fibers, wherein the fiber direction of the reinforcing element can be unidirectionally aligned.
  • an FRP element Fiber Reinforced Polymer Element
  • the reinforcing element is a FRP tension element or an FRP shear angle.
  • the reinforcing element consists in particular of carbon, glass, aramid or basalt fiber material with a high Exa value and high tensile strength.
  • the prefabrication of the reinforcing element in the sense of the aforementioned method has the advantages that a fiber-conserving processing of the fiber composite material is possible. Thus, no damage to the profile and this meets in comparison with known solutions significantly higher strength requirements. Thus, higher stabilization effects of the component to be reinforced can be achieved, as is the case with known embodiments.
  • At least one anchoring part is formed on at least one end of the reinforcing element.
  • the Anformung can be done in one or more consecutive steps.
  • the anchoring part is worked out directly from the reinforcing element. This results in a uniform fabric structure, which has an overall positive effect on the strength values of the reinforcing element.
  • a particularly advantageous possible use of a reinforcing element according to the invention can be specified for a supporting structure, a structural part or a joist of a building.
  • a component with a reinforcing element according to the invention is the subject of the invention, wherein the reinforcing element is attached to the component at an angle ⁇ relative to the longitudinal extent of the component.
  • Reinforcing element and component are integrally connected to one another according to an embodiment of this component.
  • the cohesive connection can be produced by the adhesive effect inherent in the fiber-reinforced plastic or a separate adhesive material.
  • a component according to the invention with a reinforcing element is also characterized in that the reinforcing element has at least one anchoring part present on the reinforcing element and a connection between the reinforcing element and the component is formed via this anchoring part by means of a fastening element.
  • This compound can be a detachable or permanently solid compound.
  • the component with the reinforcing element has at least one anchoring part provided on the reinforcing element, which can be inserted into a recess of the component.
  • FIG. 1A is a reinforcing element shown schematically as a blank.
  • the blank is a flat profile 1 produced from a so-called prepreg based on thermoplastic or thermosetting matrices.
  • the fiber course is preferably unidirectional in such a component.
  • the profile 1 shown has a forming area 2. This forming area is rotated at an angle ⁇ relative to the longitudinal direction of the profile 1.
  • the forming area 2 is defined so that it is the intersection of the profile plane with an imaginary plane perpendicular to the profile plane formed by the profile, said plane perpendicular to the profile plane at an angle ⁇ against the longitudinal direction of the profile and thus the possible unidirectional fibers is twisted.
  • the angle ⁇ is an acute angle and is in the range of 20 to 70 °, preferably in the range of 30 to 60 °, more preferably in the range of 40 to 50 °, most preferably 45 °.
  • FIG. 1B is a Stadiumsplan for producing a first embodiment of a reinforcing element according to the invention shown.
  • a profile 1 produced as a flat profile is produced from a so-called prepreg based on thermoplastic or thermosetting matrices.
  • the fiber course is preferably unidirectional in such a component.
  • the profile 1 shown has a forming region 2, which results from a local short-term heating.
  • a localized portion can be changed in material properties to thereby produce the ⁇ -tilted FRP profile.
  • the individual layers of the prepreg can be stacked discontinuously or continuously one above the other and pressed together under the influence of temperature and pressure or formed into a one-piece component. If a warming has taken place, a final cooling is necessary.
  • thermoplastic flat profiles should be mentioned as starting materials, which are heated only in the intended range of curvature and converted accordingly.
  • the height of the heating temperature is adjusted so that the plastic matrix can soften locally and for a limited time, wherein the softening state can take place in a liquefaction region.
  • After the forming of the flat profile to the inclined by ⁇ FRP shear angle is a brief cooling, so that the profile 1 remains in its final position and can be applied directly to the component to be amplified.
  • the fibers, in particular high modulus carbon fibers are not damaged.
  • the efficiency is improved by the inventive reinforcing elements and provided a system that combines all advantages in terms of cost and material usage.
  • FIG. 2 Another variant for producing a reinforcing element according to the invention is as a stadium plan in the FIG. 2 shown in detail.
  • starting materials for this FRP shear angle with acute angle ⁇ and with a deformed anchoring part 4 are preferably used unidirectionally reinforced thermoplastic round profiles, which have the same cross-sectional area as the final product.
  • Such round profiles are heated again with the exception of the anchoring part and pressed into a flat profile.
  • the profile 1 in the left part of the picture FIG. 2 sets the round profile as a blank and the profile 1 in the middle of FIG. 2 Subsequently, a local heating is carried out for a limited time only in the forming area 2 provided for this purpose, so that the forming area 2, according to the third illustration on the right in FIG FIG.
  • the anchoring part 4 is brought into its final form.
  • FIG. 2 is shown enlarged in the last, lower part of the picture.
  • the anchoring part 4 initially having a cycloidal cross-section has now been pressed into a flat shape.
  • the inventive reinforcing element can be generated in total from two individual round sections 1.1 and 1.2. Different approaches are available.
  • a further variant is also to convert the original round profiles 1.1 and 1.2 by a suitably suitable forming process in a flat profile 1.
  • a heating can be provided.
  • the special design of the reinforcing element according to FIG. 4 is that the anchoring part 4 has a circular cross-section.
  • this anchoring part 4 has been described in relation to the profile 1, which in FIG. 4 has already been reshaped in the region of the forming area 2, again bent, so that a multi-curved profile 1 results. That is, here the profile 1 has a second forming area 2, which in the FIG. 4 was not specified on.
  • FIG. 5 This is a component 3, which in the present case consists of a simple, rectangular in cross-section bars, provided with a reinforcing element according to the invention.
  • the reinforcing element consists of the profile 1 and two anchoring parts 4.1 and 4.2. These anchoring parts 4.1 and 4.2 are introduced in the embodiment shown in recesses of the component 3 and anchored therein.
  • the profile 1 in each case has the same angle ⁇ with respect to the longitudinal extension of the component 3 to be reinforced as the deformation region 2. This angle in each case refers to the longitudinal extension of the side surface of the component 3 to be reinforced provided with the reinforcement element.

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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)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (16)

  1. Elément de renforcement, en particulier cale de poussée, constitué d'un profilé (1, 1.1, 1.2) en matériau renforcé par des fibres, avec une zone de déformation (2), le profilé (1, 1.1, 1.2) définissant un plan de profilé avec une direction longitudinale dans celui-ci, et le profilé (1, 1.1, 1.2) étant déformé dans cette zone de déformation (2), et l'élément de renforcement étant réalisé de ce fait sous forme tridimensionnelle,
    caractérisé en ce que
    la zone de déformation (2) se situe dans une intersection du plan de profilé avec un plan imaginaire perpendiculaire au plan de profilé, ce plan perpendiculaire au plan de profilé étant tourné d'un angle aigu (α) par rapport à la direction longitudinale du profilé (1, 1.1, 1.2).
  2. Elément de renforcement selon la revendication 1,
    caractérisé en ce que
    l'angle (α) se trouve dans une plage de 20 à 70°, de préférence dans une plage de 30 à 60°, et particulièrement préférablement dans une plage de 40 à 50°.
  3. Elément de renforcement selon la revendication 1 ou 2,
    caractérisé en ce que
    le profilé (1, 1.1, 1.2) est un profilé plat, un profilé en U, un profilé en T, ou un profilé en L.
  4. Elément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément de renforcement présente au moins sur l'une de ses extrémités une partie d'ancrage (4, 4.1, 4.2), la partie d'ancrage (4, 4.1, 4.2) se prolongeant notamment depuis la section transversale du profilé (1, 1.1, 1.2) en une section transversale polygonale ou cycloïde.
  5. Elément de renforcement selon la revendication 4,
    caractérisé en ce que
    la partie d'ancrage (4, 4.1, 4.2) est en plusieurs parties et/ou en ce que la partie d'ancrage (4, 4.1, 4.2) présente une géométrie adaptée pour recevoir ou pour faire passer un élément de fixation (5), notamment une cheville, une vis ou un rivet.
  6. Elément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément de renforcement se compose d'une résine matricielle thermoplastique ou duroplastique.
  7. Elément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément de renforcement est formé par des fibres de carbone de module élevé et/ou par un matériau en fibres de carbone, de verre, d'aramide ou de basalte avec une valeur ExA élevée et une grande résistance à la traction.
  8. Elément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'orientation des fibres de l'élément de renforcement est unidirectionnelle.
  9. Elément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'élément de renforcement est une cale de poussée.
  10. Procédé de fabrication d'un élément de renforcement selon l'une quelconque des revendications précédentes,
    caractérisé par les étapes de procédé suivantes :
    - fabrication d'un profilé (1, 1.1, 1.2) en matériau renforcé par des fibres, de préférence d'un profilé plat,
    - déformation du profilé (1, 1.1, 1.2) de telle sorte que celui-ci présente au moins une zone de déformation (2), la déformation de la zone de déformation (2) s'effectuant au moyen d'un chauffage thermique partiel de la zone de déformation (2) et la zone de déformation (2) se trouvant dans une intersection du plan de profilé avec un plan imaginaire perpendiculaire au plan de profilé, ce plan perpendiculaire au plan de profilé étant tourné d'un angle aigu (α) par rapport à la direction longitudinale du profilé (1, 1.1, 1.2).
  11. Procédé de fabrication d'un élément de renforcement selon la revendication 10,
    caractérisé en ce
    qu'au moins une partie d'ancrage (4, 4.1, 4.2) est formée à au moins une extrémité de l'élément de renforcement.
  12. Utilisation d'un élément de renforcement selon l'une quelconque des revendications 1 à 9 pour un bâti porteur, un poste porteur ou un entrait d'une maçonnerie.
  13. Composant comprenant un élément de renforcement selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    le composant (3) présente une section transversale polygonale ou cycloïde.
  14. Composant selon la revendication 13,
    caractérisé en ce que
    l'élément de renforcement est fixé au composant (3) par rapport à l'étendue longitudinale du composant (3), suivant un angle (α), l'angle (α) étant dans une plage de 20 à 70°, de préférence dans une plage de 30 à 60°, et particulièrement préférablement dans une plage de 40 à 50°.
  15. Composant selon la revendication 13 ou 14,
    caractérisé en ce que
    l'élément de renforcement est connecté par liaison de matière au composant (3).
  16. Composant selon l'une quelconque des revendications 13 à 15,
    caractérisé en ce que
    l'élément de renforcement présente au moins une partie d'ancrage (4, 4.1, 4.2) prévue sur l'élément de renforcement, et par le biais de cette partie d'ancrage (4, 4.1, 4.2), une connexion entre l'élément de renforcement et le composant (3) est établie au moyen d'un élément de fixation (5), l'au moins une partie d'ancrage (4, 4.1, 4.2) prévue sur l'élément de renforcement pouvant notamment être insérée dans un évidement (6) du composant (3).
EP07787774A 2006-07-21 2007-07-20 Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort Active EP2047046B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07787774A EP2047046B1 (fr) 2006-07-21 2007-07-20 Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06117647A EP1881125A1 (fr) 2006-07-21 2006-07-21 Élément de renforcement, procédé pour sa fabrication et élément de construction pourvu d'un tel élément de renforcement
PCT/EP2007/057524 WO2008009744A1 (fr) 2006-07-21 2007-07-20 élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort
EP07787774A EP2047046B1 (fr) 2006-07-21 2007-07-20 Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort

Publications (2)

Publication Number Publication Date
EP2047046A1 EP2047046A1 (fr) 2009-04-15
EP2047046B1 true EP2047046B1 (fr) 2010-04-28

Family

ID=37527758

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06117647A Ceased EP1881125A1 (fr) 2006-07-21 2006-07-21 Élément de renforcement, procédé pour sa fabrication et élément de construction pourvu d'un tel élément de renforcement
EP07787774A Active EP2047046B1 (fr) 2006-07-21 2007-07-20 Élément de renfort, procédé de fabrication d'un tel élément de renfort et composant doté d'un élément de renfort

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06117647A Ceased EP1881125A1 (fr) 2006-07-21 2006-07-21 Élément de renforcement, procédé pour sa fabrication et élément de construction pourvu d'un tel élément de renforcement

Country Status (4)

Country Link
EP (2) EP1881125A1 (fr)
AT (1) ATE466149T1 (fr)
DE (1) DE502007003614D1 (fr)
WO (1) WO2008009744A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2948712B1 (fr) * 2009-08-03 2015-03-06 Soletanche Freyssinet Procede de renforcement d'une structure de construction, et ouvrage ainsi renforce

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334645C3 (de) * 1973-07-07 1983-04-07 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur Herstellung eines Trägers aus Faserverbundprofil
JPH11293788A (ja) * 1998-04-06 1999-10-26 Mitsui Home Co Ltd 住宅部材の接合構造及びその接合方法
JP3532441B2 (ja) * 1999-03-17 2004-05-31 蓮太郎 難波 構造材同士の接合箇所における補強構造及び補強方法
CA2397103A1 (fr) * 2000-01-13 2001-07-19 Dow Global Technologies Inc. Composites a base de resines thermoplastiques et de fibres renforcantes comme supports de structure externe
EP1549810A1 (fr) * 2002-09-25 2005-07-06 The University Of Southern Queensland Elements structuraux formes de materiaux moulables
JP2005105685A (ja) * 2003-09-30 2005-04-21 Nippon Oil Corp Ｌ字状繊維強化樹脂プレート及びそれを用いた構造物補強方法
JP2005219365A (ja) * 2004-02-06 2005-08-18 Toray Ind Inc 繊維強化プラスチック板および建築構造物

Also Published As

Publication number Publication date
ATE466149T1 (de) 2010-05-15
EP2047046A1 (fr) 2009-04-15
DE502007003614D1 (de) 2010-06-10
EP1881125A1 (fr) 2008-01-23
WO2008009744A1 (fr) 2008-01-24

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