EP0954660A1 - Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellung - Google Patents
Flachband-lamelle zur verstärkung von bauteilen sowie verfahren zu deren herstellungInfo
- Publication number
- EP0954660A1 EP0954660A1 EP98907958A EP98907958A EP0954660A1 EP 0954660 A1 EP0954660 A1 EP 0954660A1 EP 98907958 A EP98907958 A EP 98907958A EP 98907958 A EP98907958 A EP 98907958A EP 0954660 A1 EP0954660 A1 EP 0954660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamella
- fibers
- flat strip
- binder matrix
- angle
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
-
- 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 lamella for reinforcing load-bearing or load-transmitting components, which has a composite structure made up of a plurality of flexible or pliable support fibers aligned parallel to one another and a binder matrix that connects the support fibers in a shear-resistant manner, and which is broadly attached to the surface of the by means of an adhesive reinforcing component is attachable.
- the invention further relates to a method for producing such flat ribbon slats.
- Reinforcement slats of this type are known, for example, from WO 96/21785.
- the reinforcement slats are used there on elongated and / or flat structural parts.
- the binder matrix which consists of a rigid elastic thermoset, for example made of epoxy resin, does not permit any bends with small radii of curvature, so that hanger-like reinforcements which have passed over a component edge have heretofore not been possible hereby.
- Bow-shaped reinforcements are required, for example, to ensure the connection between the compression and tensile zones in reinforced concrete beams and reinforced concrete slab beams and to avoid shear and transverse cracks. Proceeding from this, the object of the invention is to develop a flat strip lamella which enables components to be reinforced across edges. Another object of the invention is the development of methods for the production of such flat ribbon slats.
- a prefabricated angled lamella which has two lamella limbs which are integrally connected to one another in the region of a transverse edge running transversely to the longitudinal extent of the supporting fibers and enclose a defined angle of 30 ° to 150 °. Since the component edges to be reinforced are predominantly rectangular, the lamella legs form an angle of 90 ° with one another. In order to be able to transmit tensile forces across the transverse edge without risk of breakage, the transverse edge between the lamella limbs is expediently curved with a radius of curvature of 5 to 50 mm, preferably 15 to 30 mm.
- telmatrix initially elongated flat strip lamella, at least in an intermediate area at a temperature above the glass transition point, for example at a temperature of 300 'C to 600 ° C, with the formation of two lamella legs connected to one another via a transverse edge and enclosing an angle and subjected to a bending pressure and then cooled to the lower operating temperature while temporarily maintaining the pressing force.
- Another method according to the invention for producing the angle lamellae is that a fiber strand consisting of supporting fibers is spirally wound onto a support body with a preferably square or rectangular outline and fixed to it in the wound state, that the wound fiber strand forms a liquid with the binder matrix Resin is impregnated so that the synthetic resin is cured to form a composite material tube, preferably in the form of a square tube, and that the composite material tube is separated several times transversely and lengthwise, if appropriate after removal of the support body, with the formation of the angled lamellas with supporting fibers running in the direction of their longitudinal extension.
- a third variant of the method according to the invention for the production of the angled lamellae consists in the fact that a strand or a fabric made of supporting fibers into a casting mold with a cross-sectionally angular cavity, that liquid binder resin is injected or poured into the cavity soaking the supporting fibers, that the binder resin is preferably cured under the action of pressure and heat and that the finished angles formed are then lamellae are removed from the mold.
- the angled lamellae according to the invention can be used for the shear reinforcement, tensile reinforcement or kink protection of reinforced concrete beams, supports or beams, the two mutually angled legs being glued over a component edge to two component surfaces enclosing a corresponding angle by means of an adhesive layer.
- a second flat strip lamella which is to be connected to the relevant component surface, can be glued overlapping on at least one of the two lamella limbs by means of an adhesive layer.
- This means that a plurality of flat strip lamellae can also be glued to one another and to the component surfaces at their free leg ends, forming a closed lamellar ring comprising the component.
- the binder matrix be exposed in at least one intermediate area while exposing the supporting fibers to remove.
- the exposed carrier fibers can be bent over a preferably rounded solid or component edge and, in this state, a liquid or pasty, curable plastic can be applied to them in the area of the exposed carrier fibers.
- the hardening plastic stabilizes the exposed carrier fibers in their bent state over the edge.
- the supporting fibers are expediently designed as carbon fibers, which are distinguished by a high modulus of elasticity.
- the carrier fibers can also contain or consist of ara- mit fibers, glass fibers, polypropylene fibers and the like.
- the binder matrix and the plastic subsequently applied to the exposed carrier fibers suitably consist of a thermoset, for example of epoxy resin, polyurethane resin, acrylic resin or polyester resin.
- the lamella which initially has a continuous binder matrix, is heated to the decomposition temperature of the binder in at least one defined intermediate region, and the binder matrix is removed while exposing the carrier fibers.
- the flat strip lamella is heated in the intermediate area to temperatures between 300 ° C. and 750 ° C. Then the flat strip lamella is in the intermediate area around a solid body. edge or a component edge bent and soaked before or after with the curable, preferably made of epoxy resin.
- the flat strip slats according to the invention can be used for shear reinforcement, tensile reinforcement or buckling protection of reinforced concrete beams, supports or beams, in which the flat strip slats with their intermediate areas freed from the binder matrix are bent around the edges of the components concerned and in their bending state with a hardenable one Plastic are applied. If the radius of curvature of the edges is too small, the components can be equipped at their edges with a rounding part which increases the radius of curvature before the flat strip lamella is attached.
- Figures la and b are a plan view and a side view of a reinforcing lamella with a binder-free, flexible intermediate area.
- Figure 2 shows a section through a reinforced concrete slab with a bow-shaped bent reinforcing lamella.
- FIG. 3 shows a detail from FIG. 2; 4 shows a section of a component with a sharp-edged corner and a rounded-off part in a sectional view corresponding to FIG. 3;
- 6a to c show a diagram for explaining a method for the production of angle lamellae according to FIG. 5;
- FIG. 7a to c show three sectional views corresponding to FIG. 2 to illustrate the use of the angle lamellae according to FIG. 5 in the reinforcement of components.
- the flat strip lamella 10 shown in FIGS. La and b is intended for the subsequent reinforcement of components 12, such as reinforced concrete structures and masonry. It is fastened with its one broad side 14 to the surface of the component 12 with the aid of an adhesive 16, which preferably consists of epoxy resin, and is additionally anchored with its free ends 18 in recesses 20 of the component 12 with the aid of adhesive or mortar.
- an adhesive 16 which preferably consists of epoxy resin
- the component 12 according to FIGS. 2 and 3 is exemplary as
- Slab beams made of reinforced concrete in which the lamella 10 extends in a bow-like manner over the web 22 of the component 12 and thereby over the corner edges 24 of the web 22 is bent.
- the flat ribbon amelle consists of a composite structure made up of a plurality of flexible or pliable support fibers 26 made of carbon, which are aligned parallel to one another, and of a binder matrix 28 made of epoxy resin which connects the support fibers in a shear-resistant manner.
- the binder matrix 28 ensures that the flat strip lamella is relatively stiff and therefore cannot be bent over the corner edges 24 in principle.
- the binder matrix 28 is removed in an intermediate region 30 under the action of a temperature of approx. 650 ° C., so that the flexible or pliable support fibers 26 are exposed.
- the flat strip lamella in the intermediate region 30 can be bent by 90 ° over the rounded corner edge 24 and stabilized in the bending position by impregnation with a hardenable plastic.
- the supporting fibers 26 in the intermediate area 30 can also be soaked with the curable plastic before assembly and then bent over the corner edge 24 when the plastic is still soft.
- the flat strip lamella 10 is fastened to a component 12 with a sharp-edged corner edge 24. Since the radius of curvature of the flat strip lamella in the intermediate region 30 must not be less than a certain minimum, a rounded part 32 is, for example, on the corner edge 24 made of plastic, which overlaps the corner edge and has an enlarged radius of curvature towards the outside.
- the flat strip lamella shown in FIG. 5 is designed as a prefabricated angle lamella 110, which is also intended for reinforcing load-bearing or load-transmitting components 112.
- the angled lamella 110 has two lamella legs 134 which are integrally connected to one another in the region of a rounded transverse edge 130 which runs transversely to the longitudinal extension of the supporting fibers 126 and form an angle of 90 ° with one another.
- the radius of curvature in the area of the transverse edge is, for example, 5 to 50 mm.
- a first preparation variant consists in that an elongated flat strip lamella having a continuous binder matrix in which the transverse edge 130 forming space of the interconnected at a temperature above the glass transition point of the binder matrix temperature (300 to 600 * C in epoxy resin) to form on the transverse edge 130, an angle enclosing lamella legs 134 exposed to a bending pressure and then cooled to the operating temperature while temporarily maintaining the pressing force.
- FIG. 6a to c Another manufacturing variant is shown in FIG. 6a to c explains: A strand of a plurality of carbon fibers 126 aligned parallel to one another is wound onto a support body 136 with a square cross-section and fixed in the wound-up state on the support body 136 (FIG. 6a). The wound fiber strand is then impregnated with liquid synthetic resin to form a binder matrix. After the synthetic resin has hardened, a composite material tube 140 is formed which is designed as a square tube and can be removed from the support body 36 (FIG. 6b). The square tube can then be cut along the cutting lines 142 and 144 so that angular lamellae 110 are formed (FIG. 6c), in which the supporting fibers 126 extend over the edge 130 in the direction of their longitudinal extent in the sense of FIG. 5.
- the corner slats 110 can be used to reinforce load-bearing or load-transmitting components 112, the two legs being angled relative to one another
- the invention relates to a flat strip lamella for reinforcing load-bearing or load-transmitting components.
- It has a composite structure made up of a plurality of flexible or pliable support fibers 26 aligned parallel to one another and a binder matrix 28 which connects the support fibers in a shear-resistant manner and can be fastened to the surface of the component 12 to be reinforced by means of an adhesive 16.
- a binder matrix 28 which connects the support fibers in a shear-resistant manner and can be fastened to the surface of the component 12 to be reinforced by means of an adhesive 16.
- the binder matrix 28 is removed in at least one intermediate region 30 with exposure of the carrier fibers 26 and that the exposed carrier fibers are used to stabilize the bent Condition with a liquid or pasty, curable plastic.
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)
- Reinforced Plastic Materials (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Moulding By Coating Moulds (AREA)
- Rod-Shaped Construction Members (AREA)
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702249 | 1997-01-23 | ||
DE19702249 | 1997-01-23 | ||
DE19733065A DE19733065A1 (de) | 1997-01-23 | 1997-07-31 | Flachband-Lamelle zur Verstärkung von Bauteilen sowie Verfahren zu deren Herstellung |
DE19733065 | 1997-07-31 | ||
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 true EP0954660A1 (de) | 1999-11-10 |
EP0954660B1 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 |
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 |
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 |
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 |
AU2014276778B2 (en) * | 2013-06-06 | 2017-10-12 | Sika Technology Ag | Arrangement and method for reinforcing supporting structures |
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 AU AU66146/98A patent/AU720157B2/en not_active Ceased
- 1998-01-20 AT AT98907958T patent/ATE202614T1/de not_active IP Right Cessation
- 1998-01-20 JP JP53155498A patent/JP3489839B2/ja not_active Expired - Fee Related
- 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 WO PCT/EP1998/000270 patent/WO1998032933A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9832933A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE202614T1 (de) | 2001-07-15 |
AU6614698A (en) | 1998-08-18 |
JP2000513059A (ja) | 2000-10-03 |
AU720157B2 (en) | 2000-05-25 |
JP3489839B2 (ja) | 2004-01-26 |
WO1998032933A1 (de) | 1998-07-30 |
EP0954660B1 (de) | 2001-06-27 |
US6511727B1 (en) | 2003-01-28 |
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