EP0954660B1 - Flat strip lamella for reinforcing building components and method for their production - Google Patents
Flat strip lamella for reinforcing building components and method for their production Download PDFInfo
- Publication number
- EP0954660B1 EP0954660B1 EP98907958A EP98907958A EP0954660B1 EP 0954660 B1 EP0954660 B1 EP 0954660B1 EP 98907958 A EP98907958 A EP 98907958A EP 98907958 A EP98907958 A EP 98907958A EP 0954660 B1 EP0954660 B1 EP 0954660B1
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- EP
- European Patent Office
- Prior art keywords
- lamella
- flat strip
- reinforcing fibers
- angle
- fibers
- 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.)
- Expired - Lifetime
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/16—Two dimensionally sectional layer
- Y10T428/163—Next to unitary web or sheet of equal or greater extent
- Y10T428/164—Continuous two dimensionally sectional layer
- Y10T428/167—Cellulosic sections [e.g., parquet floor, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24777—Edge feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/24994—Fiber embedded in or on the surface of a polymeric matrix
- Y10T428/249942—Fibers are aligned substantially parallel
Definitions
- the invention relates to a flat strip slat for reinforcing load-bearing or load-bearing components that form a composite structure a multiplicity of flexible or limp limbs which are aligned parallel to one another Carrying fibers and one that connects the supporting fibers in a shear-resistant manner Has binder matrix, and the broadside by means of an adhesive can be attached to the surface of the component to be reinforced.
- the invention also relates to a method for producing such flat strip slats.
- Reinforcement slats of this type are known, for example, from WO 96/21785.
- the reinforcement slats are there on elongated and / or flat building parts used.
- the one from a stiff elastic Duroplastic, for example made of epoxy resin binder matrix no bends with small bend radii, so that over a component edge thus far, bow-like reinforcements have not been possible were.
- bow-shaped reinforcements are needed to in the case of reinforced concrete beams and reinforced concrete slab beams, the relationship between to secure the pressure and tension zone and shear and transverse cracks too avoid.
- the object of the invention is a flat strip lamella to develop a cross-edge reinforcement of Components enabled.
- Another object of the invention is Development of processes for the production of such flat ribbon slats.
- a prefabricated angled lamella is proposed, the two in the area of a transverse to the longitudinal extension of the supporting fibers Cross edge connected in one piece, a defined Has lamella legs enclosing angles of 30 ° to 150 °. Since the component edges to be reinforced are predominantly rectangular the lamella legs form an angle of 90 ° with each other on. To pull across the transverse edge without risk of breakage to be able to transfer, the transverse edge between the lamella legs, expediently with a radius of curvature of 5 to 50 mm, preferably 15 to 30 mm, curved.
- Binder matrix initially elongated flat strip lamella at least in an intermediate area at a point above the glass transition point lying temperature, for example at a temperature from 300 ° C to 650 ° C, forming two over a transverse edge interconnected lamella legs enclosing an angle exposed to a bending pressure and then temporarily Maintaining the pressing force at the lower operating temperature is cooled.
- Another procedure according to the invention for producing the angle lamellae consists in a fiber strand consisting of supporting fibers on a support body with preferably square or rectangular Outline wound spirally and fixed to it in the wound state is that the wound fiber strand to form the binder matrix is soaked with a liquid synthetic resin that the synthetic resin with formation a composite tube, preferably designed as a square tube is cured, and that the composite pipe, if necessary after removing the support body with the formation of the angle slats with over Carrying fibers running in the direction of their longitudinal extension several times is cut across and lengthwise.
- a third method variant according to the invention for producing the angle lamellae consists in the fact that a strand or a fabric of supporting fibers placed in a casting mold with a cross-sectionally angular cavity is that in the cavity liquid binder resin soaking the Carrier fibers are injected or poured in that the binder resin preferably is cured under the influence of pressure and heat and that then the finished angle slats formed from the Casting mold can be removed.
- the angle lamellae according to the invention can be used for shear reinforcement, tensile reinforcement or buckling protection of reinforced concrete beams, columns or -bars are used, the two angled against each other Legs across a component edge at two, one corresponding Component surfaces enclosing angles with one another by means of an adhesive layer be stuck on.
- the flat strip lamella shown in FIG. 1 is a prefabricated angle lamella 110 designed to reinforce load-bearing or load-transmitting Components 112 is determined.
- the angle lamella 110 has two in the area of a transverse to the longitudinal extent of the supporting fibers 126, rounded transverse edge 130 integrally connected to one another Lamella legs 134 enclosing angles of 90 °.
- the radius of curvature in the region of the transverse edge is, for example, 5 to 50 mm.
- the angle slats 110 can be used for Reinforcement of load-bearing or load-transmitting components 112 are used, the two angled legs 134 at two enclosing a corresponding angle Surfaces of the component 112 across their corner edges 124 by means of a Adhesive layer, not shown, are glued.
- the leg ends with each other or with the ends of elongated flat ribbon slats 111 are glued. How from 3c can be seen, can also enclose the component 112 in this way closed reinforcement ring are generated.
- a first process variant for the production of an angle lamella exists in the fact that an elongated flat strip lamella with a continuous binder matrix in the space forming the transverse edge 130 at a above the glass transition point of the binder matrix Temperature (300 to 600 ° C for epoxy resin) with the formation of the Cross edge 130 interconnected, enclosing an angle Lamellar limb 134 exposed to a bending pressure and then while maintaining the pressing force at the use temperature is cooled.
- FIGS. 2a to 2c A further production variant is explained with reference to FIGS. 2a to 2c: a Strand of a plurality of carbon fibers aligned parallel to one another 126 is placed on a support body 136 with a square cross section wound and fixed in the wound state on the support body 136 (Fig. 2a). Then the wound fiber strand is formed to form a binder matrix impregnated with liquid synthetic resin. After curing the Synthetic resin creates a composite tube made as a square tube 140, which can be removed from the support body 136 (Fig. 2b). The Square tube can then be cut along the cutting lines 142 and 144 be that angular lamellas 110 arise (Fig. 2c), in which the Carrier fibers 126 in the sense of FIG. 1 over the edge 130 in the direction their longitudinal extent.
- the invention relates to a Ribbon slat for reinforcing load-bearing or load-transmitting Components. It has a composite structure of a variety of parallel, notched, pliable or pliable support fibers 126 and a binder matrix that connects the supporting fibers in a shear-resistant manner and is broadside on the surface with an adhesive attachable to the component to be reinforced.
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- Architecture (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Reinforcement Elements For Buildings (AREA)
- Reinforced Plastic Materials (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Moulding By Coating Moulds (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
Die Erfindung betrifft eine Flachband-Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauteilen, die eine Verbundstruktur aus einer Vielzahl von parallel zueinander ausgerichteten biegsamen oder biegeschlaffen Tragfasern und einer die Tragfasern schubfest miteinander verbindenden Bindemittelmatrix aufweist, und die mittels eines Klebers breitseitig an der Oberfläche des zu verstärkenden Bauteils befestigbar ist. Die Erfindung betrifft ferner ein Verfahren zur Herstellung derartiger Flachband-Lamellen.The invention relates to a flat strip slat for reinforcing load-bearing or load-bearing components that form a composite structure a multiplicity of flexible or limp limbs which are aligned parallel to one another Carrying fibers and one that connects the supporting fibers in a shear-resistant manner Has binder matrix, and the broadside by means of an adhesive can be attached to the surface of the component to be reinforced. The invention also relates to a method for producing such flat strip slats.
Verstärkungslamellen dieser Art sind beispielsweise bekannt aus der WO 96/21785. Die Verstärkungslamellen werden dort an langgestreckten und/oder flächigen Bauwerkteilen eingesetzt. Die aus einem steifelastischen Duroplast, beispielsweise aus Epoxidharz bestehende Bindemittelmatrix läßt keine Biegungen mit kleinen Biegungsradien zu, so daß über eine Bauteilkante hinweg geführte, bügelartige Verstärkungen hiermit bisher nicht möglich waren. Bügelförmige Bewehrungen werden beispielsweise benötigt, um bei Stahlbetonbalken und Stahlbetonplattenbalken den Zusammenhang zwischen der Druck- und Zugzone zu sichern und Schub- und Querrisse zu vermeiden.Reinforcement slats of this type are known, for example, from WO 96/21785. The reinforcement slats are there on elongated and / or flat building parts used. The one from a stiff elastic Duroplastic, for example made of epoxy resin binder matrix no bends with small bend radii, so that over a component edge thus far, bow-like reinforcements have not been possible were. For example, bow-shaped reinforcements are needed to in the case of reinforced concrete beams and reinforced concrete slab beams, the relationship between to secure the pressure and tension zone and shear and transverse cracks too avoid.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Flachband-Lamelle zu entwickeln, die eine kantenübergreifende Verstärkung von Bauteilen ermöglicht. Eine weitere Aufgabe der Erfindung besteht in der Entwicklung von Verfahren zur Herstellung derartiger Flachband-Lamellen. Proceeding from this, the object of the invention is a flat strip lamella to develop a cross-edge reinforcement of Components enabled. Another object of the invention is Development of processes for the production of such flat ribbon slats.
Zur Lösung dieser Aufgabe werden die in den Patentansprüchen 1, 8, 9, 11 angegebenen Merkmalskombinationen vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem, the in claims 1, 8, 9, 11th specified combinations of features proposed. Advantageous configurations and further developments of the invention result from the dependent Claims.
Gemäß der Erfindung wird eine vorgefertigte Winkellamelle vorgeschlagen, die zwei im Bereich einer quer zur Längserstreckung der Tragfasern verlaufenden Querkante einstückig miteinander verbundene, einen definierten Winkel von 30° bis 150° miteinander einschließende Lamellenschenkel aufweist. Da die zu verstärkenden Bauteilkanten überwiegend rechtwinklig ausgebildet sind, schließen die Lamellenschenkel einen Winkel von 90° miteinander ein. Um über die Querkante hinweg Zugkräfte ohne Bruchgefahr übertragen zu können, wird die Querkante zwischen den Lamellenschenkeln, zweckmäßig mit einem Krümmungsradius von 5 bis 50 mm, vorzugsweise 15 bis 30 mm, gekrümmt ausgebildet.According to the invention, a prefabricated angled lamella is proposed, the two in the area of a transverse to the longitudinal extension of the supporting fibers Cross edge connected in one piece, a defined Has lamella legs enclosing angles of 30 ° to 150 °. Since the component edges to be reinforced are predominantly rectangular the lamella legs form an angle of 90 ° with each other on. To pull across the transverse edge without risk of breakage to be able to transfer, the transverse edge between the lamella legs, expediently with a radius of curvature of 5 to 50 mm, preferably 15 to 30 mm, curved.
Für die Herstellung derartiger Winkellamellen gibt es verschiedene Möglichkeiten. Besonders vorteilhaft hat es sich erwiesen, wenn die eine durchgehende Bindemittelmatrix aufweisende, zunächst langgestreckte Flachband-Lamelle zumindest in einem Zwischenbereich bei einer oberhalb des Glasumwandlungspunkts liegenden Temperatur, beispielsweise bei einer Temperatur von 300 °C bis 650 °C, unter Bildung zweier über eine Querkante miteinander verbundener, einen Winkel miteinander einschließender Lamellenschenkel einer Biegepressung ausgesetzt und anschließend unter zeitweiliger Aufrechterhaltung der Preßkraft auf die niedrigere Gebrauchstemperatur abgekühlt wird.There are various options for the production of such angle lamellae. It has proven particularly advantageous if one is continuous Binder matrix, initially elongated flat strip lamella at least in an intermediate area at a point above the glass transition point lying temperature, for example at a temperature from 300 ° C to 650 ° C, forming two over a transverse edge interconnected lamella legs enclosing an angle exposed to a bending pressure and then temporarily Maintaining the pressing force at the lower operating temperature is cooled.
Eine weitere erfindungsgemäße Verfahrensweise zur Herstellung der Winkellamellen besteht darin, daß ein aus Tragfasern bestehender Faserstrang auf einen Stützkörper mit vorzugsweise quadratischem oder rechteckigem Umriß spiralig aufgewickelt und an diesem im aufgewickelten Zustand fixiert wird, daß der aufgewickelte Faserstrang unter Bildung der Bindemittelmatrix mit einem flüssigen Kunstharz getränkt wird, daß das Kunstharz unter Bildung einer vorzugsweise als Vierkantrohr ausgebildeten Verbundmaterialrohres ausgehärtet wird, und daß das Verbundmaterialrohr gegebenenfalls nach Entfernen des Stützkörpers unter Bildung der Winkellamellen mit über Eck in Richtung ihrer Längserstreckung verlaufenden Tragfasern mehrfach quer und längs aufgetrennt wird.Another procedure according to the invention for producing the angle lamellae consists in a fiber strand consisting of supporting fibers on a support body with preferably square or rectangular Outline wound spirally and fixed to it in the wound state is that the wound fiber strand to form the binder matrix is soaked with a liquid synthetic resin that the synthetic resin with formation a composite tube, preferably designed as a square tube is cured, and that the composite pipe, if necessary after removing the support body with the formation of the angle slats with over Carrying fibers running in the direction of their longitudinal extension several times is cut across and lengthwise.
Eine dritte erfindungsgemäße Verfahrensvariante zur Herstellung der Winkellamellen besteht darin, daß ein Strang oder ein Gewebe aus Tragfasern in eine Gießform mit im Querschnitt winkelförmiger Kavität über Eck eingelegt wird, daß in die Kavität flüssiges Bindemittelharz unter Tränken der Tragfasern eingespritzt oder eingegossen wird, daß das Bindemittelharz vorzugsweise unter Einwirkung von Druck und Wärme ausgehärtet wird und daß anschließend die dabei gebildeten fertigen Winkellamellen aus der Gießform entnommen werden.A third method variant according to the invention for producing the angle lamellae consists in the fact that a strand or a fabric of supporting fibers placed in a casting mold with a cross-sectionally angular cavity is that in the cavity liquid binder resin soaking the Carrier fibers are injected or poured in that the binder resin preferably is cured under the influence of pressure and heat and that then the finished angle slats formed from the Casting mold can be removed.
Die erfindungsgemäßen Winkellamellen können zur Schubverstärkung, Zugverstärkung oder Knicksicherung von Stahlbetonträgern, -stützen oder -balken verwendet werden, wobei die beiden gegeneinander abgewinkelten Schenkel über eine Bauteilkante hinweg an zwei, einen entsprechenden Winkel miteinander einschließenden Bauteilflächen mittels einer Klebstoffschicht aufgeklebt werden. Zur Verlängerung der Verstärkungslamelle kann an mindestens einem der beiden Lamellenschenkel eine zweite, mit der betreffenden Bauteilfläche zu verbindende Flachband-Lamelle mittels einer Kleberschicht überlappend angeklebt werden. Damit können auch mehrere Flachband-Lamellen an ihren freien Schenkelenden unter Bildung eines das Bauteil umfassenden geschlossenen Lamellenrings überlappend miteinander und mit den Bauteilflächen verklebt werden. The angle lamellae according to the invention can be used for shear reinforcement, tensile reinforcement or buckling protection of reinforced concrete beams, columns or -bars are used, the two angled against each other Legs across a component edge at two, one corresponding Component surfaces enclosing angles with one another by means of an adhesive layer be stuck on. Can be used to extend the reinforcement lamella on at least one of the two lamella legs, a second one, with the relevant one Flat strip lamella to be connected by means of a Adhesive layer to be glued overlapping. It can also be used for several Flat ribbon slats at their free leg ends to form a that Component comprising closed lamella ring overlapping with each other and be glued to the component surfaces.
Im folgenden wird die Erfindung anhand der in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiele näher erläutert. Es zeigen
- Fig. 1
- eine als Winkellamelle ausgebildete Flachband-Lamelle in schaubildlicher Darstellung;
- Fig. 2a bis c
- ein Schema zur Erläuterung eines Verfahrens für die Herstellung von Winkellamellen gemäß Fig. 1;
- Fig. 3a bis c
- drei Schnittdarstellungen von Stahlbeton-Bauteilen mit Verstärkungslamellen unter Verwendung der Winkellamellen gemäß Fig. 1.
- Fig. 1
- a flat ribbon lamella designed as an angle lamella in a diagram;
- 2a to c
- a diagram for explaining a method for the production of angle slats according to FIG. 1;
- 3a to c
- three sectional views of reinforced concrete components with reinforcing lamellae using the angle lamellae according to FIG. 1.
Die in Fig. 1 dargestellte Flachband-Lamelle ist als vorgefertigte Winkellamelle
110 ausgebildet, die zur Verstärkung von lastaufnehmenden oder lastübertragenden
Bauteilen 112 bestimmt ist. Die Winkellamelle 110 weist zwei
im Bereich einer quer zur Längserstreckung der Tragfasern 126 verlaufenden,
abgerundeten Querkante 130 einstückig miteinander verbundene, einen
Winkel von 90° miteinander einschließende Lamellenschenkel 134 auf. Der
Krümmungsradius im Bereich der Querkante beträgt beispielsweise 5 bis 50
mm. Für die Herstellung der Winkellamellen 110 gibt es verschiedene Möglichkeiten:The flat strip lamella shown in FIG. 1 is a
Wie aus den Fig. 3a bis c zu ersehen ist, können die Winkellamellen 110 zur
Verstärkung von lastaufnehmenden oder lastübertragenden Bauteilen 112
verwendet werden, wobei die beiden gegeneinander abgewinkelten Schenkel
134 an zwei einen entsprechenden Winkel miteinander einschließenden
Oberflächen des Bauteils 112 über deren Eckkanten 124 hinweg mittels einer
nicht dargestellten Klebstoffschicht angeklebt werden. Zur Verlängerung
der Verstärkungsstrecke können die Schenkelenden miteinander oder mit
den Enden langgestreckter Flachbandlamellen 111 verklebt werden. Wie aus
Fig. 3c zu ersehen ist, kann auf diese Weise auch ein das Bauteil 112 umschließender
geschlossener Verstärkungsring erzeugt werden.As can be seen from FIGS. 3a to c, the
Eine erste Verfahrensvariante zur Herstellung einer Winkellamelle besteht
darin, daß eine langgestreckte Flachbandlamelle mit durchgehender Bindemittelmatrix
in dem die Querkante 130 bildenden Zwischenraum bei einer
oberhalb des Glasumwandlungspunktes der Bindemittelmatrix liegenden
Temperatur (300 bis 600 °C bei Epoxidharz) unter Bildung der über die
Querkante 130 miteinander verbundenen, einen Winkel miteinander einschließenden
Lamellenschenkel 134 einer Biegepressung ausgesetzt und
anschließend unter zeitweiliger Aufrechterhaltung der Preßkraft auf Gebrauchstemperatur
abgekühlt wird.A first process variant for the production of an angle lamella exists
in the fact that an elongated flat strip lamella with a continuous binder matrix
in the space forming the
Eine weitere Herstellungsvariante wird anhand der Fig. 2a bis 2c erläutert: Ein
Strang aus einer Vielzahl von parallel zueinander ausgerichteten Kohlenstoffasern
126 wird auf einen Stützkörper 136 mit quadratischem Querschnitt
aufgewickelt und im aufgewickelten Zustand am Stützkörper 136 fixiert (Fig.
2a). Sodann wird der aufgewickelte Faserstrang unter Bildung einer Bindemittelmatrix
mit flüssigem Kunstharz getränkt. Nach dem Aushärten des
Kunstharzes entsteht ein als Vierkantrohr ausgebildetes Verbundmaterialrohr
140, das vom Stützkörper 136 abgenommen werden kann (Fig. 2b). Das
Vierkantrohr kann sodann entlang den Schnittlinien 142 und 144 so aufgetrennt
werden, daß Winkellamellen 110 entstehen (Fig. 2c), bei denen die
Tragfasern 126 im Sinne der Fig. 1 über die Kante 130 hinweg in Richtung
ihrer Längserstreckung verlaufen.A further production variant is explained with reference to FIGS. 2a to 2c: a
Strand of a plurality of carbon fibers aligned parallel to one another
126 is placed on a
Zusammenfassend ist folgendes festzustellen: Die Erfindung betrifft eine
Flachband-Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden
Bauteilen. Sie weist eine Verbundstruktur aus einer Vielzahl von
parallel zueinander ausgenchteten, biegsamen oder biegeschlaffen Tragfasern
126 und einer die Tragfasern schubfest miteinander verbindenden Bindemittelmatrix
auf und ist mittels eines Klebers breitseitig an der Oberfläche
des zu verstärkenden Bauteils befestigbar. Um mit der Flachband-Lamelle
eine kantenübergreifende Verstärkung von Bauteilen zu ermöglichen, wird
gemäß der Erfindung vorgeschlagen, daß eine vorgefertigte Winkellamelle
110 verwendet wird, die zwei im Bereich einer quer zur Längserstreckung
der Tragfasern 126 verlaufenden Querkante einstückig miteinander verbundene,
einen definierten Winkel von 30° bis 150° miteinander einschließende
Lamellenschenkel 134 aufweist.In summary, the following can be stated: The invention relates to a
Ribbon slat for reinforcing load-bearing or load-transmitting
Components. It has a composite structure of a variety of
parallel, notched, pliable or
Claims (15)
- Flat strip lamella for reinforcing load-bearing or loadtransmitting construction components, which is comprised of a composite structure of a plurality of flexible or limp reinforcing fibers (126) oriented parallel to each other and a binder matrix which binds the reinforcing fibers to each other in a shear-resistant manner, and which is adapted to be secured with its broad side to the outer surface of the construction component (112) to be reinforced by means of an adhesive, characterized by a preformed comer lamella (110), which comprises two lamella side pieces (134) joined in the area of a rounded-off corner edge (130) perpendicular to the longitudinally running direction of the reinforcing fibers (126) and including a defined angle of 30° to 150°.
- Flat strip lamella according to claim 1, characterized in that the lamella side pieces include an angle of 90°.
- Flat strip lamella according to claim 1 or 2, characterized in that the corner edge (130) has a radius of curvature of 5 to 50 mm, preferably of 15 to 30 mm.
- Flat strip lamella according to one of claims 1 through 3, characterized in that the reinforcing fibers contain or are comprised of carbon fibers.
- Flat strip lamella according to one of claims 1 through 4, characterized in that the reinforcing fibers contain or are comprised of aramid fibers, glass fibers or polypropylene fibers.
- Flat strip lamella according to one of claims 1 through 5, characterized in that the binder matrix, the adhesive and the hardenable plastic are comprised of a reactive resin.
- Flat strip lamella according to one of claims 1 through 6, characterized in that the binder matrix, the adhesive and the hardenable plastic consist of epoxy resin, polyurethane, acrylic resin or polyester resin.
- Method for the manufacture of corner lamellas according to one of claims 1 through 7, characterized in that a longitudinally extending flat strip lamella having a continuous binder matrix is subjected, at least in an intermediate region, to a bending pressure at a temperature of 300 to 650 °C, thereby forming two lamella side pieces (134) joined at a corner (130) and including an angle, and is subsequently cooled to a lower working temperature while temporarily maintaining the pressing force.
- Method for the manufacture of comer lamellas according to one of claims 1 through 7, characterized in that a fiber cord comprised of reinforcing fibers (126) is wrapped in a spiral manner about a support body (136) preferably having a quadrilateral or square circumference and possibly rounded-off corners, and is fixed thereto in the wound state, that the wound fiber cord is impregnated with a fluid plastic resin forming a binder matrix, that the plastic resin is hardened to form a composite material tube (140) preferably shaped as a four comer tube, and that the composite material tube (140) is cut open crosswise and longitudinally multiple times to form the corner lamella (110) with reinforcing fibers (126) extending over the comer edge in their longitudinal direction of extension.
- Method according to claim 9, characterized in that the composite material tube (140) is removed from the support body (136) before being cut open.
- Method for the manufacture of corner lamellas according to one of claims 1 through 7, characterized in that a cord or web of reinforcing fibers is introduced crosswise into a casting mold comprising a cavity having an angled cross section, that fluid binder resin is injected or poured into the cavity for impregnation of the reinforcing fibers, that the binder resin is hardened, preferably under the action of pressure and heat, and that the finished angle lamella formed in this manner are subsequently removed from the casting mould.
- Method according to claim 13, characterized in that the binder resin, which is preferably comprised of epoxy resin, is hardened or set at 100 °C to 200 °C.
- Use of the flat strip lamella according to one of claims 1 to 7 for thrust reinforcement, tensile reinforcement or buckle reinforcement of steel reinforced concrete supporting beams, studs or girders, wherein the two side pieces (134) having an included angle are adhered over an edge (124) of the building component, two surfaces of which are joined at a corresponding angle, by means of an adhesive layer (116).
- Use according to claim 13, characterized in that a second flat strip lamella (110, 111), which is to be connected to a corresponding component surface, is adhered in an overlapping manner to at least one of the two lamella side pieces (134) by means of an adhesive layer (116).
- Use according to claim 13 or 14, characterized in that a plurality of angular lamellas (110) and/or flat strip lamellas (111) are adhered to each other at their free ends under formation of a closed reinforcement ring surrounding the construction component (112), and are adhered to the construction component surfaces.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702249 | 1997-01-23 | ||
| DE19702249 | 1997-01-23 | ||
| DE19733065 | 1997-07-31 | ||
| DE19733065A DE19733065A1 (en) | 1997-01-23 | 1997-07-31 | Ribbon slat for reinforcing components and processes for their production |
| PCT/EP1998/000270 WO1998032933A1 (en) | 1997-01-23 | 1998-01-20 | Flat strip lamella for reinforcing building components and method for their production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0954660A1 EP0954660A1 (en) | 1999-11-10 |
| EP0954660B1 true EP0954660B1 (en) | 2001-06-27 |
Family
ID=26033308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98907958A Expired - Lifetime EP0954660B1 (en) | 1997-01-23 | 1998-01-20 | Flat strip lamella for reinforcing building components and method for their production |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6511727B1 (en) |
| EP (1) | EP0954660B1 (en) |
| JP (1) | JP3489839B2 (en) |
| AT (1) | ATE202614T1 (en) |
| AU (1) | AU720157B2 (en) |
| WO (1) | WO1998032933A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3777524B2 (en) * | 1997-08-04 | 2006-05-24 | 清水建設株式会社 | Reinforced structure of concrete members |
| DE19903681A1 (en) | 1999-01-29 | 2000-08-03 | Sika Ag, Vormals Kaspar Winkler & Co | Process for the production of angular components consisting of flat strip lamellae |
| JP2002129753A (en) * | 2000-10-25 | 2002-05-09 | Nippon Ps:Kk | Reinforcing method for concrete structure |
| JP3861079B2 (en) * | 2003-07-03 | 2006-12-20 | 栄次 槇谷 | Reinforced structure of reinforced concrete columns |
| CN101220634B (en) * | 2003-10-21 | 2012-09-12 | 湖南邱则有专利战略策划有限公司 | Cast-in-situ concrete hollow slab |
| CN101220639B (en) * | 2003-10-21 | 2011-06-08 | 湖南邱则有专利战略策划有限公司 | Cast-in-situ concrete hollow roof |
| CN101220640B (en) * | 2003-10-21 | 2011-06-08 | 湖南邱则有专利战略策划有限公司 | Cast-in-situ concrete hollow roof |
| JP5214864B2 (en) * | 2006-09-05 | 2013-06-19 | 新日鉄住金マテリアルズ株式会社 | Structure reinforcement method |
| US9782951B2 (en) * | 2007-07-18 | 2017-10-10 | The Boeing Company | Composite structure having ceramic truss core and method for making the same |
| US8512853B2 (en) * | 2007-07-31 | 2013-08-20 | The Boeing Company | Composite structure having reinforced core |
| US8431214B2 (en) | 2007-07-31 | 2013-04-30 | The Boeing Company | Composite structure having reinforced core and method of making same |
| JP4702337B2 (en) * | 2007-08-13 | 2011-06-15 | 株式会社大林組 | Reinforcing structure and method for reinforcing object having opening |
| FR2948712B1 (en) * | 2009-08-03 | 2015-03-06 | Soletanche Freyssinet | METHOD FOR STRENGTHENING A CONSTRUCTION STRUCTURE AND STRENGTHENING THE STRENGTH |
| EP2447446A1 (en) * | 2010-10-28 | 2012-05-02 | Sika Technology AG | Device for fastening tension members to reinforced concrete beams |
| JP5764415B2 (en) * | 2011-07-08 | 2015-08-19 | 司産業株式会社 | Reinforcement panels and reinforcement methods for concrete structures |
| US20130119191A1 (en) * | 2011-11-10 | 2013-05-16 | General Electric Company | Load-bearing structures for aircraft engines and processes therefor |
| US20140205800A1 (en) * | 2013-01-23 | 2014-07-24 | Milliken & Company | Externally bonded fiber reinforced polymer strengthening system |
| JP6051073B2 (en) * | 2013-02-22 | 2016-12-21 | 三菱樹脂インフラテック株式会社 | Anchor, manufacturing method thereof, fixing tool, method of reinforcing structure using the same, and reinforced structure |
| US9205629B2 (en) | 2013-03-15 | 2015-12-08 | Ann Livingston-Peters | Composite structure with a flexible section forming a hinge |
| JP6437534B2 (en) * | 2013-06-06 | 2018-12-12 | シーカ・テクノロジー・アーゲー | Structure and method for reinforcing a support structure |
| US9784004B2 (en) * | 2014-08-19 | 2017-10-10 | Kulstoff Composite Products, LLC | Fiber reinforced anchors and connectors, methods of making anchors and connectors, and processes for reinforcing a structure |
| US11236508B2 (en) * | 2018-12-12 | 2022-02-01 | Structural Technologies Ip, Llc | Fiber reinforced composite cord for repair of concrete end members |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085928A (en) * | 1989-04-06 | 1992-02-04 | E. I. Dupont De Nemours And Company | Fiber reinforced composites comprising uni-directional fiber layers and aramid spunlaced fabric layers |
| US6519909B1 (en) * | 1994-03-04 | 2003-02-18 | Norman C. Fawley | Composite reinforcement for support columns |
| JPH0842060A (en) * | 1994-08-02 | 1996-02-13 | Komatsu Kasei Kk | Concrete reinforcing bar made of frp |
| ATE171240T1 (en) | 1995-01-09 | 1998-10-15 | Empa | FASTENING REINFORCEMENT SLAMS |
| US5657595A (en) * | 1995-06-29 | 1997-08-19 | Hexcel-Fyfe Co., L.L.C. | Fabric reinforced beam and column connections |
-
1998
- 1998-01-20 WO PCT/EP1998/000270 patent/WO1998032933A1/en active IP Right Grant
- 1998-01-20 AT AT98907958T patent/ATE202614T1/en not_active IP Right Cessation
- 1998-01-20 JP JP53155498A patent/JP3489839B2/en not_active Expired - Fee Related
- 1998-01-20 US US09/341,771 patent/US6511727B1/en not_active Expired - Fee Related
- 1998-01-20 AU AU66146/98A patent/AU720157B2/en not_active Ceased
- 1998-01-20 EP EP98907958A patent/EP0954660B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU6614698A (en) | 1998-08-18 |
| WO1998032933A1 (en) | 1998-07-30 |
| EP0954660A1 (en) | 1999-11-10 |
| JP2000513059A (en) | 2000-10-03 |
| AU720157B2 (en) | 2000-05-25 |
| ATE202614T1 (en) | 2001-07-15 |
| US6511727B1 (en) | 2003-01-28 |
| JP3489839B2 (en) | 2004-01-26 |
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