EP0954660B1 - Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung - Google Patents
Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung 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
- Authority
- 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
Links
Images
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.
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)
- Reinforcement Elements For Buildings (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Reinforced Plastic Materials (AREA)
Description
- 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.
Claims (15)
- Flachband-Lamelle zur Verstärkung von lastaufnehmenden oder lastübertragenden Bauteilen, die eine Verbundstruktur aus einer Vielzahl von parallel zueinander ausgerichteten, biegsamen oder biegeschlaffen Tragfasern (126) und einer die Tragfasern schubfest miteinander verbindenden Bindemittelmatrix aufweist, und die mittels eines Klebers breitseitig an der Oberfläche des zu verstärkenden Bauteils (112) befestigbar ist, gekennzeichnet durch eine vorgefertigte Winkellamelle (110), die zwei im Bereich einer quer zur Längserstreckung der Tragfasern (126) verlaufenden Querkante (130) einstückig miteinander verbundene, einen definierten Winkel von 30° bis 150° miteinander einschließende Lamellenschenkel (134) aufweist.
- Flachband-Lamelle nach Anspruch 1, dadurch gekennzeichnet, daß die Lamellenschenkel einen Winkel von 90° miteinander einschließen.
- Flachband-Lamelle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Querkante (130) zwischen den Lamellenschenkeln (134) einen Krümmungsradius von 5 bis 50 mm, vorzugsweise von 15 bis 30 mm aufweist.
- Flachband-Lamelle nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Tragfasern Kohlenstoffasem enthalten oder als solche ausgebildet sind.
- Flachband-Lamelle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Tragfasern Aramidfasem, Glasfasern oder Polypropylenfasern enthalten oder als solche ausgebildet sind.
- Flachband-Lamelle nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Bindemittelmatrix, der Kleber und der aushärtbare Kunststoff aus einem Reaktionsharz bestehen.
- Flachband-Lamelle nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Bindemittelmatrix, der Kleber und der aushärtbare Kunststoff aus Epoxidharz, Polyurethan, Acrylharz oder Polyesterharz bestehen.
- Verfahren zur Herstellung von Winkellamellen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine langgestreckte Flachbandlamelle mit durchgehender Bindemittelmatrix zumindest in einem Zwischenbereich bei einer Temperatur von 300 bis 650 °C unter Bildung zweier über eine Querkante (130) miteinander verbundener, einen Winkel miteinander einschließender Lamellenschenkel (134) einer Biegepressung ausgesetzt und anschließend unter zeitweiliger Aufrechterhaltung der Preßkraft auf Gebrauchstemperatur abgekühlt wird.
- Verfahren zur Herstellung von Winkellamellen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein aus Tragfasern (126) bestehender Faserstrang auf einen Stützkörper (136) mit vorzugsweise quadratischem oder rechteckigem, gegebenenfalls abgerundete Eckkanten aufweisenden 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 eines vorzugsweise als Vierkantrohr ausgebildeten Verbundmaterialrohrs (140) ausgehärtet wird, und daß das Verbundmaterialrohr (140) unter Bildung von Winkellamellen (110) mit über Eck in Richtung ihrer Längserstreckung verlaufenden Tragfasern (126) vorzugsweise mehrfach quer und längs aufgetrennt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß das Verbundmaterialrohr (140) vor dem Auftrennen vom Stützkörper (136) abgenommen wird.
- Verfahren zur Herstellung von Winkellamellen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, 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.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das vorzugsweise aus Epoxidharz bestehende Bindemittelharz bei 100 °C bis 200 °C ausgehärtet wird.
- Verwendung der Winkellamelle nach einem der Ansprüche 1 bis 7 zur Schubverstärkung, Zugverstärkung oder Knicksicherung von Stahlbetonträgern, -stützen oder -balken, wobei die beiden gegeneinander abgewinkelten Schenkel (134) über eine Kante (124) des betreffenden Bauteils hinweg an zwei einen entsprechenden Winkel miteinander anschließenden Bauteilflächen mittels einer Kleberschicht (116) angeklebt werden.
- Verwendung nach Anspruch 13, dadurch gekennzeichnet, daß an mindestens einem der beiden Lamellenschenkel (134) eine zweite, mit der betreffenden Bauteilfläche zu verbindende Flachbandlamelle (110, 111) mittels einer Kleberschicht (116) überlappend angeklebt wird.
- Verwendung nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß mehrere Winkellamellen (110) und/ oder Flachbandlamellen (111) an ihren freien Enden unter Bildung eines das Bauteil (112) umfassenden geschlossenen Verstärkungsring überlappend miteinander und mit den Bauteilflächen verklebt werden.
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 (de) | 1997-01-23 | 1997-07-31 | Flachband-Lamelle zur Verstärkung von Bauteilen sowie Verfahren zu deren Herstellung |
PCT/EP1998/000270 WO1998032933A1 (de) | 1997-01-23 | 1998-01-20 | Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0954660A1 EP0954660A1 (de) | 1999-11-10 |
EP0954660B1 true EP0954660B1 (de) | 2001-06-27 |
Family
ID=26033308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98907958A Expired - Lifetime EP0954660B1 (de) | 1997-01-23 | 1998-01-20 | Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6511727B1 (de) |
EP (1) | EP0954660B1 (de) |
JP (1) | JP3489839B2 (de) |
AT (1) | ATE202614T1 (de) |
AU (1) | AU720157B2 (de) |
WO (1) | WO1998032933A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3777524B2 (ja) * | 1997-08-04 | 2006-05-24 | 清水建設株式会社 | コンクリート部材の補強構造 |
DE19903681A1 (de) | 1999-01-29 | 2000-08-03 | Sika Ag, Vormals Kaspar Winkler & Co | Verfahren zur Herstellung von aus Flachbandlamellen bestehenden winkelförmigen Bauteilen |
JP2002129753A (ja) * | 2000-10-25 | 2002-05-09 | Nippon Ps:Kk | コンクリート構造物の補強方法 |
JP3861079B2 (ja) * | 2003-07-03 | 2006-12-20 | 栄次 槇谷 | 鉄筋コンクリート柱の補強構造 |
CN101220639B (zh) * | 2003-10-21 | 2011-06-08 | 湖南邱则有专利战略策划有限公司 | 一种现浇砼空心楼盖 |
CN101220640B (zh) * | 2003-10-21 | 2011-06-08 | 湖南邱则有专利战略策划有限公司 | 一种现浇砼空心楼盖 |
CN101220634B (zh) * | 2003-10-21 | 2012-09-12 | 湖南邱则有专利战略策划有限公司 | 一种现浇砼空心楼盖 |
JP5214864B2 (ja) * | 2006-09-05 | 2013-06-19 | 新日鉄住金マテリアルズ株式会社 | 構造物の補強方法 |
US9782951B2 (en) * | 2007-07-18 | 2017-10-10 | The Boeing Company | Composite structure having ceramic truss core and method for making the same |
US8431214B2 (en) | 2007-07-31 | 2013-04-30 | The Boeing Company | Composite structure having reinforced core and method of making same |
US8512853B2 (en) * | 2007-07-31 | 2013-08-20 | The Boeing Company | Composite structure having reinforced core |
JP4702337B2 (ja) * | 2007-08-13 | 2011-06-15 | 株式会社大林組 | 開口部を備える補強対象物の補強構造及び方法 |
FR2948712B1 (fr) * | 2009-08-03 | 2015-03-06 | Soletanche Freyssinet | Procede de renforcement d'une structure de construction, et ouvrage ainsi renforce |
EP2447446A1 (de) * | 2010-10-28 | 2012-05-02 | Sika Technology AG | Endverankerung von Zuggliedern an Stahlbetonträgern |
JP5764415B2 (ja) * | 2011-07-08 | 2015-08-19 | 司産業株式会社 | コンクリート構造物の補強パネルと補強方法 |
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 (ja) * | 2013-02-22 | 2016-12-21 | 三菱樹脂インフラテック株式会社 | アンカーとその製造方法、定着具及びこれを用いた構造物の補強方法と補強された構造物 |
US9205629B2 (en) | 2013-03-15 | 2015-12-08 | Ann Livingston-Peters | Composite structure with a flexible section forming a hinge |
WO2014195504A1 (de) * | 2013-06-06 | 2014-12-11 | Sika Technology Ag | Anordnung und verfahren zur verstärkung von tragstrukturen |
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 (ja) * | 1994-08-02 | 1996-02-13 | Komatsu Kasei Kk | Frp製コンクリート補強筋 |
ES2122696T3 (es) | 1995-01-09 | 1998-12-16 | Empa | Sujecion de laminas de refuerzo. |
US5657595A (en) * | 1995-06-29 | 1997-08-19 | Hexcel-Fyfe Co., L.L.C. | Fabric reinforced beam and column connections |
-
1998
- 1998-01-20 EP EP98907958A patent/EP0954660B1/de not_active Expired - Lifetime
- 1998-01-20 US US09/341,771 patent/US6511727B1/en not_active Expired - Fee Related
- 1998-01-20 AT AT98907958T patent/ATE202614T1/de not_active IP Right Cessation
- 1998-01-20 WO PCT/EP1998/000270 patent/WO1998032933A1/de active IP Right Grant
- 1998-01-20 AU AU66146/98A patent/AU720157B2/en not_active Ceased
- 1998-01-20 JP JP53155498A patent/JP3489839B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3489839B2 (ja) | 2004-01-26 |
AU720157B2 (en) | 2000-05-25 |
ATE202614T1 (de) | 2001-07-15 |
US6511727B1 (en) | 2003-01-28 |
AU6614698A (en) | 1998-08-18 |
EP0954660A1 (de) | 1999-11-10 |
JP2000513059A (ja) | 2000-10-03 |
WO1998032933A1 (de) | 1998-07-30 |
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