WO1998032934A1 - Bande plate lamellaire et son utilisation pour renforcer des elements de construction - Google Patents

Bande plate lamellaire et son utilisation pour renforcer des elements de construction Download PDF

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Publication number
WO1998032934A1
WO1998032934A1 PCT/EP1998/000273 EP9800273W WO9832934A1 WO 1998032934 A1 WO1998032934 A1 WO 1998032934A1 EP 9800273 W EP9800273 W EP 9800273W WO 9832934 A1 WO9832934 A1 WO 9832934A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamella
slat
flat strip
transverse ribs
elevation
Prior art date
Application number
PCT/EP1998/000273
Other languages
German (de)
English (en)
Inventor
Alexander Bleibler
Ernesto Schümperli
Werner Steiner
Original Assignee
Sika Ag, Vormals Kaspar Winkler & Co.
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 Sika Ag, Vormals Kaspar Winkler & Co. filed Critical Sika Ag, Vormals Kaspar Winkler & Co.
Priority to AU62111/98A priority Critical patent/AU6211198A/en
Publication of WO1998032934A1 publication Critical patent/WO1998032934A1/fr

Links

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
    • 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
    • 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
    • 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
    • E04G2023/0262—Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off

Definitions

  • the invention relates to a flat strip lamella for reinforcing load-bearing or load-transmitting structural parts, which can be fastened with one broad side by means of an adhesive to the surface of the structural part to be reinforced and anchored with its free slat end in a recess in the structural part.
  • Reinforcement slats of this type are known for example from WO 96/21785. They engage with their slat ends in a prefabricated recess in the building part and are anchored there with mortar or an anchoring wedge. High shear forces can occur at the connection point between the slat ends and the component, which can lead to the reinforcing slats in this area becoming detached. This is especially the case when the slat ends anchored in the building part are relatively short.
  • the object of the invention is to improve the known flat strip slats in such a way that they can be reliably anchored at their ends in the building part without the risk of detachment.
  • the solution according to the invention is based on the idea that the local shear forces are thereby reduced and lighter compressive forces to be absorbed can be implemented so that in the area of the free slat ends there is an elevation projecting over at least one of the broad sides and integrally connected to the slat.
  • the survey expediently has at least one height corresponding to the slat wall thickness.
  • a preferred embodiment of the invention provides that the elevation is designed as a transverse rib oriented transversely to the slat longitudinal extension, it being possible to provide a plurality of transverse ribs which are arranged at a distance from one another and preferably have a triangular profile.
  • the reinforcing lamella has a composite structure made up of a plurality of carrier fibers which are oriented essentially parallel to one another and a binder which connects the carrier fibers in a shear-resistant manner, the elevations or transverse ribs belonging to the same group of materials as the binder, preferably of the same material as these exist.
  • the lamella elevations or transverse ribs preferably consist of a reaction resin, preferably of epoxy resin, polyurethane, acrylic resin or polyester resin, which has a glass transition point greater than 60 ° C., preferably greater than 90 ° C.
  • the supporting fibers are expediently designed as carbon fibers, aramid fibers, glass fibers or polypropylene fibers.
  • the reaction resin is expediently applied to the lamella ends of the prefabricated and cut flat-band lamella, for example by means of a notched trowel, and is cured there.
  • prefabricated rib supports provided with the transverse ribs, which can be plugged on-site onto the surface-roughened lamella ends and are made of a material using a hardenable adhesive. sig can be connected to them.
  • the slat ends can be bent in a predetermined manner in the course of the assembly in the longitudinal direction of the slats. Particularly high demands on the creep strength of the cross ribs can be met if the cross ribs are molded from the binder material in the course of the lamella production and are oven dried.
  • recesses or bores are made in the structural part to be reinforced, which are filled with a hardenable adhesive or mortar surrounding the elevations before or after the slat end is inserted.
  • the adhesive used here is expediently a reaction adhesive, preferably based on epoxy resin, which has a glass transition point greater than 60 ° C., preferably greater than 90 ° C. The relatively high glass transition point ensures that the creep of the adhesive under tension is minimized.
  • FIG. 1 shows a section of a flat strip slat with a ribbed slat end
  • Figure 2 shows a section of a flat strip lamella with pre-assembled rib support.
  • FIG. 3 shows a section through a reinforced concrete slab with anchoring lamella anchored in the slab area and pulled over the web;
  • FIG. 4 shows an enlarged detail from FIG. 3.
  • the flat ribbon slats shown in the drawing are intended for reinforcing load-bearing or load-transmitting structural parts, such as floor or ceiling slabs, beam and slab beams made of reinforced concrete, or for reinforcing masonry.
  • the reinforcing lamellae 10 are subsequently attached to the surface of the structural parts 12 to be reinforced with their one broad side 14 by means of an adhesive 16 and anchored with their free lamella ends 18 in a recess or bore 20 in the structural part 12.
  • the flat strip lamellae 10 have a composite structure composed of a multiplicity of carrier fibers made of carbon which are oriented essentially parallel to one another and a binder matrix which connects the carrier fibers in a shear-resistant manner.
  • the transverse ribs 22, like the binder matrix, consist of a reaction resin, preferably of epoxy resin. They ensure that the lamella ends 18 are anchored in the recesses or bores 20 in a form-fitting and material-locking manner on the structural part 12 via the adhesive 24.
  • transverse ribs 22 can either be applied directly, for example with a toothed spatula, to the lamella ends 18 or in the form of a prefabricated rib carrier 26, which is attached and attached to the roughened lamella ends 18 of the slats 10 cut to length with its pocket 28 adapted to the lamella outline this is largely glued to ⁇ .
  • the structural part 12 shown in FIGS. 3 and 4 is a plate beam, consisting of a web 28 and a plate part 30 projecting on both sides.
  • the lamella 10 encompasses the web 28 in the tension zone in the form of a U-bracket and engages with its ribbed lamella ends 18 into the bores 20 made obliquely in the pressure zone of the plate part 30.
  • the lamella ends 18 are embedded there with their transverse ribs 22 in a form-fitting and material-locking manner in the subsequently introduced and then hardened adhesive 24.
  • the invention relates to a flat strip lamella for reinforcing l load-bearing or load-transmitting structural parts.
  • the reinforcement lamella 10 can be fastened with its one broad side 14 by means of an adhesive 16 to the surface of the structural part 10 to be reinforced and with its free lamella ends 18 it can be anchored in a recess or bore 20 in the structural part 12.
  • transverse ribs 22 projecting beyond the slat broad sides 14 and integrally connected to the slat are arranged in the area of the slat ends 18.

Landscapes

  • 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)
  • Finishing Walls (AREA)

Abstract

L'invention concerne une bande plate lamellaire destinée à renforcer des éléments de construction soutenant ou transmettant une charge. La lamelle de renforcement (10) peut être fixée à l'aide d'un adhésif par un de ses côtés larges (14), à la surface de l'élément de construction (10) à renforcer et être arrimée par ses extrémités (18) libres dans une cavité ou un trou (20) de l'élément de construction (12). Afin de parvenir à un arrimage fiable, il est prévu dans la zone des extrémités (18) de la lamelle des nervures transversales (22) liées par liaison de matière avec la lamelle et faisant saillie au-dessus d'un des côtés larges (14) de ladite lamelle.
PCT/EP1998/000273 1997-01-23 1998-01-20 Bande plate lamellaire et son utilisation pour renforcer des elements de construction WO1998032934A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62111/98A AU6211198A (en) 1997-01-23 1998-01-20 Flat strip lamella and its use for reinforcing building components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702246A DE19702246A1 (de) 1997-01-23 1997-01-23 Flachband-Lamelle und deren Verwendung zur Verstärkung von Bauwerkteilen
DE19702246.4 1997-01-23

Publications (1)

Publication Number Publication Date
WO1998032934A1 true WO1998032934A1 (fr) 1998-07-30

Family

ID=7818101

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000273 WO1998032934A1 (fr) 1997-01-23 1998-01-20 Bande plate lamellaire et son utilisation pour renforcer des elements de construction

Country Status (3)

Country Link
AU (1) AU6211198A (fr)
DE (1) DE19702246A1 (fr)
WO (1) WO1998032934A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090031667A1 (en) * 2003-08-13 2009-02-05 Sika Technology Force application element, extension element, and a method for increasing the tensile load of a strip-shaped material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100408437B1 (ko) 1997-09-16 2003-12-06 신닛뽄세이테쯔 카부시키카이샤 콘크리트 부재의 보강 구조 및 보강 공법
DE102014102861A1 (de) * 2014-03-04 2015-09-10 Technische Universität Dresden Bewehrungsgitter für den Betonbau, Hochleistungsfilamentgarn für den Betonbau und Verfahren zu deren Herstellung
DE102021103589B4 (de) 2021-02-16 2024-01-18 Hans Graf Bauunternehmung GmbH & Co. KG Betonbewehrungselement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1434075A1 (de) * 1961-05-26 1968-10-31 Ney Gyl Labor Kg Verfahren zur nachtraeglichen bzw. zusaetzlichen Bewehrung von aus Beton bestehenden Bauteilen
EP0223291A2 (fr) * 1985-11-07 1987-05-27 Akzo N.V. Elément d'armature en matériau synthétique à utiliser dans du béton armé, plus particulièrement du béton précontraint, béton armé muni de tels éléments d'armature et procédé de production d'éléments d'armature et de béton armé et précontraint
US5362542A (en) * 1992-03-13 1994-11-08 Komatsu Plastics Industry Co., Ltd. Fiber reinforced plastic reinforcement for concrete
WO1996021785A1 (fr) 1995-01-09 1996-07-18 Eidgenössische Materialprüfungs- und Forschungsanstalt Empa Systeme de fixation de lamelles de renforcement
WO1997002393A1 (fr) * 1995-06-30 1997-01-23 Cornell Research Foundation, Inc. Tige d'armature en composite stratifie et son procede de fabrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1434075A1 (de) * 1961-05-26 1968-10-31 Ney Gyl Labor Kg Verfahren zur nachtraeglichen bzw. zusaetzlichen Bewehrung von aus Beton bestehenden Bauteilen
EP0223291A2 (fr) * 1985-11-07 1987-05-27 Akzo N.V. Elément d'armature en matériau synthétique à utiliser dans du béton armé, plus particulièrement du béton précontraint, béton armé muni de tels éléments d'armature et procédé de production d'éléments d'armature et de béton armé et précontraint
US5362542A (en) * 1992-03-13 1994-11-08 Komatsu Plastics Industry Co., Ltd. Fiber reinforced plastic reinforcement for concrete
WO1996021785A1 (fr) 1995-01-09 1996-07-18 Eidgenössische Materialprüfungs- und Forschungsanstalt Empa Systeme de fixation de lamelles de renforcement
WO1997002393A1 (fr) * 1995-06-30 1997-01-23 Cornell Research Foundation, Inc. Tige d'armature en composite stratifie et son procede de fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090031667A1 (en) * 2003-08-13 2009-02-05 Sika Technology Force application element, extension element, and a method for increasing the tensile load of a strip-shaped material
US8881493B2 (en) * 2003-08-13 2014-11-11 Sika Technology Ag Force application element, extension element, and a method for increasing the tensile load of a strip-shaped material

Also Published As

Publication number Publication date
AU6211198A (en) 1998-08-18
DE19702246A1 (de) 1998-07-30

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