WO1998032934A1 - Flat strip lamella and its use for reinforcing building components - Google Patents

Flat strip lamella and its use for reinforcing building components 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
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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)
French (fr)
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/en

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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
    • 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.

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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)
  • Finishing Walls (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The invention relates to a flat strip lamella for reinforcing weight-bearing or weight-transferring building components. The reinforcing lamella (10) can be fastened by means of an adhesive (16) by one of its broad sides (14) to the surface of the building component (10) that is to be reinforced, and can be anchored by its free lamella ends (18) in a cavity or hole (20) of the building component (12). Protruding transversal ribs (22) which materially connected to the lamella are arranged in the area of the lamella ends (18) on top of one of the lamella broad sides (14) in order to achieve reliable anchoring.

Description

Flachband- Lamelle und deren Verwendung zur Verstärkung von BauwerkteilenRibbon slats and their use to reinforce structural parts
Beschreibungdescription
Die Erfindung betrifft eine Flachband- Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauwerkteilen, die mit ihrer einen Breitseite mittels eines Klebers an der Oberfläche des zu verstärkenden Bauwerkteils befestigbar und mit ihren freien Lamellenende in einer Ausnehmung des Bauwerkteils verankerbar ist.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.
Verstärkungslamellen dieser Art sind beispielsweise aus der WO 96/21785 bekannt. Sie greifen mit ihren Lamellenenden in eine vorgefertigte Ausnehmung des Bauwerkteils ein und werden dort mit Mörtel oder einem Verankerungskeil verankert. An der Verbindungsstelle zwischen den Lamellenenden und dem Bauteil können hohe Scherkräfte auftreten, die zu einem Ablösen der Verstärkungslamellen in diesem Bereich führen kön- nen. Dies ist vor allem dann der Fall, wenn die im Bauwerkteil verankerten Lamellenenden relativ kurz ausgebildet sind.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.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, die bekannten Flachband- Lamellen dahingehend zu verbessern, daß sie an ihren Enden zuverlässig ohne die Gefahr einer Ablösung im Bauwerkteil verankert werden können.Proceeding from this, 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.
Zur Lösung dieser Aufgabe werden die im Patentanspruch 1 an- gegebenen Merkmale vorgeschlagen. Vorteilhafte Ausgestaltungen und Verwendungen der Erfindung ergeben sich aus den ab¬ hängigen Ansprüchen.To achieve this object, the features specified in claim 1 are proposed. Advantageous embodiments and uses of the invention are evident from the dependent claims from ¬.
Die erfindungsgemäße Lösung geht von dem Gedanken aus, daß die lokalen Scherkräfte dadurch reduziert und in leichter aufzunehmende Druckkräfte umgesetzt werden können, daß im Bereich der freien Lamellenenden eine über mindestens eine der Breitseiten überstehende und Stoffschlüssig mit der Lamelle verbundene Erhebung angeordnet ist. Die Erhebung weist dabei zweckmäßig mindestens eine der Lamellenwandstärke entsprechende Höhe auf. Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß die Erhebung als quer zur Lamellen- längserstreckung ausgerichtete Querrippe ausgebildet ist, wobei an jeder Breitseite mehrere im Abstand voneinander an- geordnete, vorzugsweise ein Dreieckprofil aufweisende Querrippen vorgesehen sein können.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.
Die Verstärkungslamelle weist gemäß einer vorteilhaften Ausgestaltung der Erfindung eine Verbundstruktur aus einer Vielzahl von im wesentlichen parallel zueinander ausgerichteten Tragfasern und einem die Tragfasern schubfest miteinander verbindenden Bindemittel auf, wobei die Erhebungen oder Querrippen der gleichen Stoffgruppe wie das Bindemittel angehören, vorzugsweise aus dem gleichen Material wie diese bestehen. Vorzugsweise bestehen die Lamellenerhebungen oder Querrippen aus einem Reaktionsharz, vorzugsweise aus Epoxidharz, Polyurethan, Acrylharz oder Polyesterharz das einen Glasumwandlungspunkt größer 60 "C, vorzugsweise größer 90 °C aufweist. Die Tragfasern sind zweckmäßig als Kohlenstofffa- sern, Aramidfasern, Glasfasern oder Polypropylenfasern ausgebildet .According to an advantageous embodiment of the invention, 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.
Zur Erzeugung der Querrippen wird das Reaktionsharz zweckmäßig auf die Lamellenenden der vorgefertigten und abgeläng- ten Flachband-Lamelle beispielsweise mittels einer Zahnspachtel aufgetragen und dort zur Aushärtung gebracht. Grundsätzlich ist es möglich, auch vorgefertigte, mit dem Querrippen versehene Rippenträger vorzusehen, die vor Ort auf die oberflächig aufgerauhten Lamellenenden aufsteckbar und unter Verwendung eines aushärtbaren Klebers stoffschlüs- sig mit diesen verbindbar sind. Die Lamellenenden können im Zuge der Konfektionierung in Lamellenlängsrichtung in vorgegebener Weise gebogen werden. Besonders hohe Anforderungen an die Kriechfestigkeit der Querrippen können erfüllt wer- den, wenn die Querrippen im Zuge der Lamellenfertigung aus dem Bindemittelmaterial angeformt und ofengetrocknet werden.In order to produce the transverse ribs, 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. In principle, it is also possible to provide 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.
Zur Verankerung der Lamellenenden werden in das zu verstärkende Bauwerkteil Ausnehmungen oder Bohrungen eingebracht, die vor oder nach dem Einstecken des Lamellenendes mit einem die Erhebungen umschließenden aushärtbaren Kleber oder Mörtel ausgefüllt werden. Der hierbei verwendete Kleber ist zweckmäßig ein Reaktionskleber vorzugsweise auf Epoxidharz - basis, der einen Glasumwandlungspunkt größer als 60 °C, vor- zugsweise größer als 90 °C aufweist. Der relativ hohe Glasumwandlungspunkt sorgt dafür, daß das Kriechen des Klebers unter Spannung minimalisiert wird.To anchor the slat ends, 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.
Im folgenden wird die Erfindung anhand eines in der Zeich- nung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigenThe invention is explained in more detail below on the basis of an exemplary embodiment shown schematically in the drawing. Show it
Fig. 1 einen Ausschnitt aus einer Flachband- Lamelle mit be- ripptem Lamellenende;1 shows a section of a flat strip slat with a ribbed slat end;
Fig. 2 einen Ausschnitt aus einer Flachband- Lamelle mit vorkonfektioniertem Rippenträger;Figure 2 shows a section of a flat strip lamella with pre-assembled rib support.
Fig. 3 einen Schnitt durch einen Stahlbeton- Plattenbalken mit im Plattenbereich verankerter und über den Steg gezogener Verstärkungslamelle;3 shows a section through a reinforced concrete slab with anchoring lamella anchored in the slab area and pulled over the web;
Fig. 4 einen vergrößerten Ausschnitt aus Fig. 3.4 shows an enlarged detail from FIG. 3.
Die in der Zeichnung dargestellten Flachband- Lamellen sind zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauwerkteilen, wie Boden- oder Deckenplatten, Balken- und Plattenbalken aus Stahlbeton oder zur Verstärkung von Mauerwerk bestimmt. Die Verstärkungslamellen 10 werden nachträg- lieh an der Oberfläche der zu verstärkenden Bauwerkteile 12 mit ihrer einen Breitseite 14 mittels eines Klebers 16 fixiert und mit ihren freien Lamellenenden 18 in einer Ausnehmung oder Bohrung 20 des Bauwerkteils 12 verankert.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.
Die Flachband- Lamellen 10 weisen bei den gezeigten Ausführungsbeispielen eine Verbundstruktur aus einer Vielzahl von im wesentlichen parallel zueinander ausgerichteten Tragfasern aus Kohlenstoff und einer die Tragfasern schubfest miteinander verbindenden Bindemittelmatrix auf. An den Lamel - lenenden 18 sind mehrere im Abstand voneinander angeordnete, über die Breitseiten 14 überstehende, ein Dreiecksprofil aufweisende, als Querrippen ausgebildete Erhebungen 22 angeordnet, die stoffschlüssig mit dem Lamellenmaterial verbunden sind. Die Querrippen 22 bestehen ebenso wie die Binde- mittelmatrix aus einem Reaktionsharz, vorzugsweise aus Epoxidharz. Sie sorgen dafür, daß die Lamellenenden 18 über den Kleber 24 in den Ausnehmungen oder Bohrungen 20 form- und stoffschlüssig am Bauwerkteil 12 verankert werden.In the exemplary embodiments shown, 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. A plurality of elevations 22, which are arranged at a distance from one another and protrude beyond the broad sides 14 and have a triangular profile and are designed as transverse ribs, are integrally connected to the lamella material. 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.
Die Querrippen 22 können entweder unmittelbar, beispielsweise mit einer Zahnspachtel auf die Lamellenenden 18 aufgebracht werden oder in Form eines vorkonfektionierten Rippen- trägers 26, der auf die aufgerauhten Lamellenenden 18 der abgelängten Lamellen 10 mit seiner an den Lamellenumriß an- gepaßten Tasche 28 aufgesteckt und an diesen großflächig an¬ geklebt ist.The 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 ¬ .
Bei dem in Fig. 3 und 4 gezeigten Bauwerkteil 12 handelt es sich um einen Plattenbalken, bestehend aus einem Steg 28 und einem beidseitig überstehenden Plattenteil 30. Die Lamelle 10 umgreift in der Form eines U-Bügels den Steg 28 in dessen Zugzone und greift mit seinen berippten Lamellenenden 18 in die schräg in die Druckzone des Plattenteils 30 eingebrachten Bohrungen 20 ein. Die Lamellenenden 18 sind dort mit ihren Querrippen 22 form- und stoffschlüssig in den nachträglich eingebrachten und danach ausgehärteten Kleber 24 eingebettet .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.
Zusammenfassend ist folgendes festzustellen: Die Erfindung bezieht sich auf eine Flachband- Lamelle zur Verstärkung von l staufnehmenden oder lastübertragenden Bauwerkteilen. Die Verstärkungslamelle 10 ist mit ihrer einen Breitseite 14 mittels eines Klebers 16 an der Oberfläche des zu verstärkenden Bauwerkteils 10 befestigbar und mit ihren freien La- mellenenden 18 in einer Ausnehmung oder Bohrung 20 des Bauwerkteils 12 verankerbar. Um eine zuverlässige Verankerung zu erzielen, sind im Bereich der Lamellenenden 18 über die Lamellenbreitseiten 14 überstehende und stoffschlüssig mit der Lamelle verbundene Querrippen 22 angeordnet. In summary, the following can be stated: 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. In order to achieve reliable anchoring, 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.

Claims

Patentansprüche claims
1. Flachband- Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauwerkteilen, die mit ihrer ei- nen Breitseite (14) mittels eines Klebers (16) an der Oberfläche des zu verstärkenden Bauwerkteils (12) befestigbar und mit ihren freien Lamellenenden (18) in einer Ausnehmung (20) des Bauwerkteils (12) verankerbar ist, dadurch gekennzeichnet, daß im Bereich zumindest eines der freien Lamellenenden (18) mindestens eine über eine der Lamellenbreitseiten (14) überstehende, stoffschlüssig mit der Lamelle verbundene Erhebung (22) angeordnet ist.1. Flat strip lamella for reinforcing load-bearing or load-transmitting structural parts, which can be fastened with its broad side (14) by means of an adhesive (16) to the surface of the structural part (12) to be reinforced and with its free lamella ends (18) in one Recess (20) of the structural part (12) can be anchored, characterized in that in the area of at least one of the free slat ends (18) at least one elevation (22) projecting over one of the slat broad sides (14) and integrally connected to the slat is arranged.
2. Flachband-Lamelle nach Anspruch 1, dadurch gekennzeichnet, daß die Erhebung mindestens eine der Lamellenwandstärke entsprechende Höhe aufweist.2. Flat strip slat according to claim 1, characterized in that the elevation has at least one height corresponding to the slat wall thickness.
3. Flachband- Lamelle nach Anspruch 1 oder 2, dadurch ge- kennzeichnet, daß die Erhebung (22) als quer zur Lamel- lenlängserstreckung ausgerichtete Querrippe ausgebildet ist.3. Flat strip lamella according to claim 1 or 2, characterized in that the elevation (22) is designed as a transverse rib oriented transversely to the longitudinal lamella extension.
4. Flachband- Lamelle nach einem der Ansprüche 1 bis 3, da- durch gekennzeichnet, daß auf jeder Lamellenbreitseite4. Ribbon slat according to one of claims 1 to 3, characterized in that on each slat broadside
(14) mehrere im Abstand voneinander angeordnete, vorzugsweise als Querrippen ausgebildete Erhebungen (22) angeordnet sind.(14) a plurality of elevations (22) arranged at a distance from one another, preferably designed as transverse ribs, are arranged.
5. Flachband- Lamelle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie eine Verbundstruktur aus einer Vielzahl von im wesentlichen parallel zueinander ausgerichteten Tragfasern und einer die Tragfasern miteinander verbindender Bindemittelmatrix aufweisen, und daß die Erhebungen oder Querrippen der gleichen Stoff- gruppe wie die Bindemittelmatrix angehören, vorzugsweise aus dem gleichen Material wie diese bestehen.5. Flat ribbon lamella according to one of claims 1 to 4, characterized in that it has a composite structure of a plurality of carrier fibers oriented essentially parallel to one another and a binder matrix connecting the carrier fibers to one another, and that the elevations or transverse ribs of the same fabric group as the binder matrix, preferably made of the same material as this.
6. Flachband- Lamelle nach einem der Ansprüche 1 bis 5, da- durch gekennzeichnet, daß die Erhebungen oder Querrippen aus einem Reaktionsharz mit einem Glasumwandlungspunkt größer 60 'C, vorzugsweise größer 90 °C bestehen.6. Flat strip lamella according to one of claims 1 to 5, characterized in that the elevations or transverse ribs consist of a reaction resin with a glass transition point greater than 60 'C, preferably greater than 90 ° C.
7. Flachband- Lamelle nach Anspruch 6, dadurch gekennzeich- net, daß die Erhebungen oder Querrippen aus Epoxidharz,7. flat strip lamella according to claim 6, characterized in that the elevations or transverse ribs made of epoxy resin,
Polyurethan, Acrylharz oder Polyesterharz bestehen.Polyurethane, acrylic resin or polyester resin exist.
8. Flachband- Lamelle nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die Querrippen ein Dreieckpro - fil aufweisen.8. flat strip lamella according to one of claims 2 to 7, characterized in that the transverse ribs have a triangular profile.
9. Flachband- Lamelle nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Querrippen (22) an einem an den freien Lamellenenden (18) befestigbaren Rippen- träger (26) angeordnet sind.9. Ribbon lamella according to one of claims 2 to 8, characterized in that the transverse ribs (22) are arranged on a rib carrier (26) which can be fastened to the free lamella ends (18).
10. Flachband- Lamelle nach Anspruch 9, dadurch gekennzeichnet, daß der Rippenträger (26) als auf die vorzugsweise oberflächig aufgerauhten Lamellenenden (18) aufsteckba- re, mit einem aushärtbaren Kleber ausfüllbare Hülse oder Tasche ausgebildet ist.10. Flat strip lamella according to claim 9, characterized in that the rib carrier (26) is designed as a sleeve or pocket which can be plugged onto the preferably surface-roughened lamella ends (18) and filled with a curable adhesive.
11. Flachband- Lamelle nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Lamellenenden (18) in La- mellenlängsrichtung gebogen sind.11. Ribbon slat according to one of claims 1 to 10, characterized in that the slat ends (18) are bent in the longitudinal direction of the slat.
12. Verwendung der Flachband- Lamelle nach einem der Ansprü¬ che 1 bis 11 zur Verankerung an einem lastaufnehmenden oder lastübertragenden Bauwerkteil, das vorzugsweise in seiner Druckzone mindestens eine Bohrung (20) zur Auf- nähme eines der mit mindestens einer Erhebung (22) versehenen Lamellenenden (18) aufweist, wobei die Ausnehmung oder Bohrung (20) mit einem die Erhebung umschließenden aushärtbaren Kleber oder Mörtel beaufschlagbar ist .12. Use of the flat ribbon blade according to one of Ansprü ¬ che 1 to 11 for anchorage to a load-bearing or load-transmitting structural part, preferably in its compression zone at least one bore (20) for up- would take one of the lamella ends (18) provided with at least one elevation (22), the recess or bore (20) being able to be acted upon with a hardenable adhesive or mortar surrounding the elevation.
13. Verwendung nach Anspruch 12, dadurch gekennzeichnet, daß die Ausnehmung (20) oder Bohrung in Lamellenlängsrichtung des Lamellenendes gebogen ist oder zu dieser schräg verläuft.13. Use according to claim 12, characterized in that the recess (20) or bore is bent in the longitudinal direction of the slat end of the slat or extends obliquely to it.
14. Verwendung nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß als Kleber (24) ein Reaktionsharz, vorzugsweise Epoxidharz, Polyurethan, Acrylharz oder Poly- esterharz verwendet wird.14. Use according to claim 12 or 13, characterized in that a reaction resin, preferably epoxy resin, polyurethane, acrylic resin or polyester resin is used as the adhesive (24).
15. Verwendung nach Anspruch 14, dadurch gekennzeichnet, daß das Reaktionsharz einen Glasumwandlungspunkt größer 60 °C, vorzugsweise größer 90 °C aufweist. 15. Use according to claim 14, characterized in that the reaction resin has a glass transition point greater than 60 ° C, preferably greater than 90 ° C.
PCT/EP1998/000273 1997-01-23 1998-01-20 Flat strip lamella and its use for reinforcing building components WO1998032934A1 (en)

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
DE19702246.4 1997-01-23
DE19702246A DE19702246A1 (en) 1997-01-23 1997-01-23 Ribbon slats and their use to reinforce structural parts

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WO1998032934A1 true WO1998032934A1 (en) 1998-07-30

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AU6211198A (en) 1998-08-18
DE19702246A1 (en) 1998-07-30

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