EP2088259B1 - Dispositif de pré-tension d'éléments de renforcement sur des constructions - Google Patents

Dispositif de pré-tension d'éléments de renforcement sur des constructions Download PDF

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Publication number
EP2088259B1
EP2088259B1 EP09151200A EP09151200A EP2088259B1 EP 2088259 B1 EP2088259 B1 EP 2088259B1 EP 09151200 A EP09151200 A EP 09151200A EP 09151200 A EP09151200 A EP 09151200A EP 2088259 B1 EP2088259 B1 EP 2088259B1
Authority
EP
European Patent Office
Prior art keywords
reinforcement
metal
laminate
box
laminates
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.)
Active
Application number
EP09151200A
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German (de)
English (en)
Other versions
EP2088259A1 (fr
Inventor
Josef Scherer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S&P Clever Reinforcement Co AG
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Individual
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Priority to PL09151200T priority Critical patent/PL2088259T3/pl
Publication of EP2088259A1 publication Critical patent/EP2088259A1/fr
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Publication of EP2088259B1 publication Critical patent/EP2088259B1/fr
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Classifications

    • 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
    • E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • 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
    • E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • E04G2023/0259—Devices specifically adapted to stress the 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 device for tensioning unidirectional fiber laminates with high tensile strength and tensile modulus of elasticity.
  • the fiber laminates are bonded to the bending-stressed side of a concrete or reinforced concrete component under tension.
  • DE 102 49 266 B3 a device has become known, according to which is tensioned by means of hydraulic cylinders, in which case a blocking is carried out in the tensioned state.
  • DE 198 49 605 A1 shows a device with which also by means of hydraulic cylinders is tensioned, in which case the clamping position is secured with spacers in the tensioned state.
  • the object of the present invention is to provide an alternative device, by means of which a bias voltage is generated, which stops during the curing of the adhesive, but the voltage building part of the device after the construction of the bias voltage is removable, so that this part to another Devices for building the required there bias can be used, that is successively flying on a variety of devices can be used. This should make the construction site process more flexible and faster.
  • a device for biasing reinforcing laminates to buildings consisting of a clamping shoe for clamping the exciting reinforcing laminate end and a box-like metal body, which forms a flat base plate below and forms an open box at the top, the metal body by means of his Underside projecting screws indirectly with a building zugmony connectable and has at one end two screws, which are outside out of the local metal body wall vertically extendable to strike the laminate side end wall of the clamping shoe, and an associated cylinder-piston unit which can be inserted into the box-like metal body is, so that its one side on the inner wall of the box-like metal body finds a stop, and is held on the opposite side of the cylinder in the box wall cut out for this purpose and the piston in the same direction as the screws through this box wall is extendable through, for acting on the laminate side end wall of the clamping shoe.
  • the device for prestressing reinforcing laminates on structures consists of a clamping shoe 1 for clamping the reinforcing laminate end 2 to be clamped and a box-like metal body 3 which forms a flat base plate at the bottom and forms an open box at the top.
  • the metal body 3 is located on a Endverank ceremoniessplatte, which is zugraäftig connectable by means of projecting from its underside dowel screws 4 with a building 5.
  • the metal body 3 is connected very strongly to this Endverank ceremoniessplatte about more screws 14.
  • it has two setscrews 6, which are externally vertically extendable out of the local metal body outer side 7, to strike the laminate-side end wall 8 of the clamping shoe 1.
  • the device further includes an associated cylinder-piston unit 9, which is insertable into the box-like metal body 3.
  • an associated cylinder-piston unit 9 which is insertable into the box-like metal body 3.
  • its one side on the inner wall 10 of the box-like metal body 3 finds a stop, and on the opposite side of the cylinder 11 of the unit 9 is held in the box wall 12 cut out for this purpose.
  • the piston 13 is extendable in the same direction as the set screws 6 through this box wall 18 and serves to act on the laminate side end wall 8 of the clamping shoe 1.
  • the whole box-like metal body is preferably formed from an integrally machined from the solid aluminum block and has a length of about 30cm up. On its underside encloses a separate, to be lost in use, not visible here Endverank ceremoniessplatte.
  • the side walls 12 of the box-like metal body 3 are cut out from above, so that trapezoidal cutouts are formed. As a result, reinforcements are maintained, which reinforce the end walls together to increased traction
  • the associated clamping shoe 1 consists of two hingedly connected parts 15,16, as shown in the FIG. 2 is apparent. These parts have mutually matching curved clamping surfaces, for accurately fitting inclusion of a reinforcing laminate end 20 are used, and which can be pressed against each other by means of screw 21.
  • the end, directed in the direction of the clamped reinforcing laminate 2 wall 8 is at Wegklemmetem reinforcing laminate 2 perpendicular to the base side and is equipped with a concave Zentrierpfanne 22 as a coupling member into which the convex piston tip 23 fits.
  • the associated clamping shoe 1 is equipped on its front support edge with an angular plastic profile 17.
  • the side walls 12 of the box-like metal body 3 are cut out, and the end walls are made as high as the cylinder-piston unit 9 inserted in the metal body in its then-lying state.
  • FIG. 3 shows this a building 5 in the form of a bridge, the left fix rests and on the right of a dilatation bearing 24. At a bridge reinforcing laminates are typically glued to the bottom to increase the clamping force of the building 5.
  • screw dowel offset In the building as in FIG. 3 shown screw dowel offset.
  • the dowels are placed in the base made of concrete or reinforced concrete. Adhesive dowels or expansion dowels can be used. For example, four such dowels and screws 4 are displaced on each side. Here you can see only the front four screws 4, which obscure the view of the rear four.
  • the base is roughened and the adhesive 25 applied in the area where the fiber laminate 2 is applied, as in FIG. 4 shown.
  • the fiber laminate 2 is temporarily positioned in the adhesive.
  • the strip-shaped reinforcing laminate 2 extends between the two rows of screws. Thus, only the front screws 4 are visible, while those behind the reinforcing laminate 2 are not visible.
  • end anchoring plates 19 are applied to the reinforcing laminate 2 with another layer of adhesive 25 and tightened with the screws 4, so that the end anchoring plates 19 clamp the reinforcing laminate 2 in those places for provisional securing, as in FIG FIG. 5 shown.
  • the adhesive 25 is not yet cured, so that therefore the reinforcing laminate 2 can still pull under tension on the adhesive layer.
  • the tensioning devices are attached.
  • the metal body 3 are screwed by means of separate fastening screws 14 on the Endverank ceremoniessplatten 19 and braced vigorously with them.
  • the clamping shoes 1 are mounted and by screwing their hinged parts, the reinforcing laminate 2 is clamped between these parts 15,16.
  • the clamping shoes 1 are then on the building. Now, for biasing the reinforcing laminate 2 on its only one side of a hydraulic cylinder-piston unit 9 is inserted into the local metal body 3 and with a hand pump hydraulic fluid on the Hydraulic line 26 pumped into the same, so that the piston 13 extends and the clamping shoe 1 is applied.
  • the pressure force used in this case is about 120 kN in the order of magnitude and the path due to the prestressing is 2 to about 15 mm, depending on the length of the reinforcing laminate.
  • the coupling member in the form of the centering pan 22 ensures that the forces are introduced centrally into the fiber laminate.
  • eccentricities which arise during the clamping process are compensated. Namely, the unidirectional fiber laminate is incapable of absorbing eccentric stresses. Accordingly, the coupling member, that is, this centering pan 22 is of extraordinary importance for the clamping operation.
  • the pretensioning device is designed so that the tensioning device can be applied to both fin ends. In the case of on-site space problems, it is therefore possible, thanks to this clamping device, to carry out the clamping operation on the left or right-hand fin end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bridges Or Land Bridges (AREA)
  • Body Structure For Vehicles (AREA)

Claims (6)

  1. Dispositif destiné à prétendre des stratifiés de renforcement sur des bâtiments , lequel dispositif est composé d'un patin de serrage (1) destiné à serrer l'extrémité du stratifié de renforcement qui doit tendue (20) et composé également d'un corps métallique (3) sous forme de boîte, lequel corps forme une plaque de base plane sur sa partie inférieure et une boîte ouverte sur sa partie supérieure, où ledit corps métallique (3) peut être lié indirectement avec l'immeuble au moyen de vis (14) exerçant une force de traction et faisant saillie à partir du côté inférieur dudit corps métallique et lequel corps comporte deux vis de réglage (6) sur son extrémité, lesquelles vis peuvent sortir de façon perpendiculaire à l'extérieur de la paroi du corps métallique (18) qui se trouve sur place, et ainsi buter contre la paroi terminale (8) du patin de serrage (1) qui se trouve du côté du stratifié, et lequel dispositif comporte également une unité cylindre-piston associée (9) qui peut être disposée dans le corps métallique (3) sous forme de boîte, de manière à ce qu'un côté de ladite unité vienne buter contre la paroi intérieure du corps métallique (3) sous forme de boîte et laquelle unité est maintenue sur le côté opposé des cylindres (11) dans la paroi de la boîte (12) qui est découpée à cette fin, et de manière à ce que le piston (13) puisse être sorti dans la même direction que les vis de réglages (6) à travers cette paroi (18) de la boîte pour que ledit côté soit appliqué contre la paroi terminale (8) du patin de serrage (1) du côté du stratifié.
  2. Dispositif destiné à prétendre des stratifiés de renforcement selon la revendication 1, caractérisé en ce que le corps métallique (3) sous forme de boîte est formé d'un bloc d'aluminium fraisé dans la masse pour constituer une seule pièce, et lequel corps présente sur son côté inférieur une plaque d'encrage terminale (19) séparée qui peut être perdue lors de l'utilisation.
  3. Dispositif destiné à prétendre des stratifiés de renforcement selon une des revendications 1 à 2, caractérisé en ce que les parois latérales (12) du corps métallique (3) sous forme de boîte soient découpées.
  4. Dispositif destiné à prétendre des stratifiés de renforcement selon une des revendications 1 à 3, caractérisé en ce que le patin de serrage (1) associé est composé de deux pièces (15, 16) liées entre elles au moyen de charnières, c'est-à-dire, d'une pièce (15) inférieure ayant une surface de serrage courbée orientée vers le haut et ledit patin étant également composé d'une pièce (16) supérieure avec une surface de serrage qui monte dans la direction opposée ; ces deux surfaces de serrage pouvant être pressées l'une contre l'autre au moyen de liaisons de vissage (21) en enfermant de façon exactement ajustée une extrémité de stratifié de renforcement (20) et où la paroi située du côté de l'extrémité s'étend, pour un stratifié de renforcement serré (2), de façon perpendiculaire par rapport à la face de base en direction du stratifié de renforcement (2) qui doit être serré, et laquelle paroi est équipée d'un évidement de centrage (22) concave destiné à recevoir la pointe (23) du piston de l'unité cylindre-piston (9), laquelle pointe sort et présente une forme convexe.
  5. Dispositif destiné à prétendre des stratifiés de renforcement selon une des revendications 1 à 4, caractérisé en ce que le patin de serrage (1) associé est équipé sur son bord avant inférieur d'un profilé (17) en matière plastique qui présente la forme d'un angle et sert de pièce de glissage.
  6. Dispositif destiné à prétendre des stratifiés de renforcement selon une des revendications 1 à 5, caractérisé en ce que les parois latérales (18) du corps métallique (3) en forme de boîte sont découpées, et en ce que les parois terminales sont aussi hautes que l'unité (9) cylindre-piston, incorporée dans le corps métallique, dans son état lorsqu'elle est incorporée dans ledit corps métallique.
EP09151200A 2008-02-08 2009-01-23 Dispositif de pré-tension d'éléments de renforcement sur des constructions Active EP2088259B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09151200T PL2088259T3 (pl) 2008-02-08 2009-01-23 Urządzenie do wstępnego naprężania elementów wzmacniających budowli

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00177/08A CH701655B1 (de) 2008-02-08 2008-02-08 Verfahren und Vorrichtung zum Vorspannen von Verstärkungslaminaten an Bauwerken.

Publications (2)

Publication Number Publication Date
EP2088259A1 EP2088259A1 (fr) 2009-08-12
EP2088259B1 true EP2088259B1 (fr) 2011-10-12

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ID=40535646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09151200A Active EP2088259B1 (fr) 2008-02-08 2009-01-23 Dispositif de pré-tension d'éléments de renforcement sur des constructions

Country Status (6)

Country Link
EP (1) EP2088259B1 (fr)
AT (1) ATE528462T1 (fr)
CH (1) CH701655B1 (fr)
ES (1) ES2377266T3 (fr)
PL (1) PL2088259T3 (fr)
PT (1) PT2088259E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4071321A1 (fr) 2021-04-07 2022-10-12 Vilniaus Gedimino technikos universitetas Dispositif et procédé pour structures de renforcement avec stratifiés de polymère renforcé de fibres pré-contraints

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105064696A (zh) * 2015-09-06 2015-11-18 福州卓强加固工程有限公司 一种预应力碳纤维板的张拉设备
CN106703433B (zh) * 2016-12-29 2022-09-13 华北水利水电大学 一种预应力纤维片材组合装配式张拉装置及其施工方法
CN107859348B (zh) * 2017-10-20 2020-05-05 长安大学 纤维织物主动施力系统
CN112854801A (zh) * 2021-01-08 2021-05-28 黄璟雯 一种建筑结构加固连接装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19849605A1 (de) * 1998-10-28 2000-05-04 Goehler Andrae Und Partner Ber Spannvorrichtung für ein bandförmiges Zugglied
DE19944573A1 (de) * 1999-09-17 2001-03-22 Josef Scherer Verstärkungsanordnung für Bauwerke und Bauwerksteile
WO2002016710A2 (fr) * 2000-08-16 2002-02-28 Josef Scherer Dispositif de serrage d'elements de renforcement
DE10249266B3 (de) * 2002-10-23 2004-04-08 Leonhardt, Andrä und Partner Beratende Ingenieure VBI GmbH Spannvorrichtung für bandförmige Zugglieder
EP1507048A1 (fr) * 2003-08-14 2005-02-16 Sika Technology AG Procédé de mise sous tension d'un matériau composite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4071321A1 (fr) 2021-04-07 2022-10-12 Vilniaus Gedimino technikos universitetas Dispositif et procédé pour structures de renforcement avec stratifiés de polymère renforcé de fibres pré-contraints

Also Published As

Publication number Publication date
ES2377266T3 (es) 2012-03-26
PT2088259E (pt) 2012-01-12
PL2088259T3 (pl) 2012-06-29
ATE528462T1 (de) 2011-10-15
CH701655B1 (de) 2011-02-28
EP2088259A1 (fr) 2009-08-12

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