EP0949389A1 - Dispositif d'ancrage pour tirants - Google Patents

Dispositif d'ancrage pour tirants Download PDF

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Publication number
EP0949389A1
EP0949389A1 EP99106872A EP99106872A EP0949389A1 EP 0949389 A1 EP0949389 A1 EP 0949389A1 EP 99106872 A EP99106872 A EP 99106872A EP 99106872 A EP99106872 A EP 99106872A EP 0949389 A1 EP0949389 A1 EP 0949389A1
Authority
EP
European Patent Office
Prior art keywords
tension member
anchoring device
protective element
tension
anchoring
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
Application number
EP99106872A
Other languages
German (de)
English (en)
Other versions
EP0949389B1 (fr
Inventor
Michael Blaschko
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.)
Bilfinger SE
Original Assignee
Bilfinger und Berger Bau AG
Bilfinger Berger AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bilfinger und Berger Bau AG, Bilfinger Berger AG filed Critical Bilfinger und Berger Bau AG
Priority to EP03023075A priority Critical patent/EP1380705B1/fr
Publication of EP0949389A1 publication Critical patent/EP0949389A1/fr
Application granted granted Critical
Publication of EP0949389B1 publication Critical patent/EP0949389B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/127—The tensile members being made of fiber reinforced plastics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • 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 an anchoring device for tension members, in particular for Tension members made of fiber-reinforced plastic, with an anchoring body, through which the tension member is guided, and with at least two anchor wedges around the Tension member are arranged and with the help of the tension member in the anchor body is set.
  • the tension member is guided through a sleeve or at the end provided with a sleeve.
  • the sleeve is then covered with a binder, such as with resin, potted so that the tension member is fixed in the sleeve.
  • a binder such as with resin
  • clamp anchors In the case of clamping anchors, the tension member is guided through an anchoring body and fixed there using at least two anchor wedges, which are usually be arranged symmetrically around the tension member. The tension member is transverse to Longitudinally pressed. The resulting friction enables the pretension required force transmission into the tension member.
  • Clamp anchorages have that Advantage that they can be installed relatively easily at any point on a tension member are.
  • clamp anchors are only suitable to a limited extent for certain tension members. Particularly in the case of tension members that are highly sensitive to transverse pressure, i.e. tension members, which have an anisotropic material behavior, can in the range of Clamping anchorage occurring shear stress peaks to break, i.e. to tear off of the tension member. The possibilities of force application or load transfer are very limited here. Especially under dynamic load the efficiency of clamping anchors in such tension members is therefore relative bad.
  • tension members that are highly sensitive to lateral pressure
  • tension members are excluded fiber-reinforced plastics - especially carbon fiber-reinforced Plastics (CFRP) - called.
  • CFRP carbon fiber-reinforced Plastics
  • Such tension members are used, for example, as reinforcement elements used in concrete construction. Tensioning the tension members or Reinforcement elements lead to improved load-bearing behavior of the concrete component under working load.
  • the invention is based on the object of an anchoring device in Specify the type in question, which an improved force in the Tension member allows.
  • the anchoring device according to the invention achieves the above object by the features of claim 1. Thereafter, the aforementioned Anchoring device designed so that at least one protective element is provided is arranged between the anchor wedges and the tension member, so that the force is applied to the tension member indirectly via the protective element.
  • the protective element essentially depends on the type of tension member used.
  • the protective element could advantageously be in shape be formed a sleeve through which the strand-shaped tension member is guided.
  • this sleeve must have the tension member as far as possible enclose positively.
  • the sleeve could be made from a deformable Material such as B. sheet, be made and have a slot.
  • Such Sleeve could be used for assembly and adaptation to stranded tension members with different Diameter simply bent apart or pressed together become.
  • Tension members made of fiber-reinforced plastics are often in the form of strips or Slats in front.
  • An inventive designed for such band-shaped tension members Anchoring device comprises at least two plate-shaped protective elements, the one on the two main surfaces of the band-shaped tension member be arranged opposite. The areal dimensioning of the plate-shaped Protective elements should be matched to the width of the band-shaped tension member become.
  • the surfaces of the anchor wedges in contact with the protective element provided with recesses are the surfaces of the anchor wedges in contact with the protective element provided with recesses, whereby the contact surface is reduced.
  • the contact surface is also formed by recesses in the surface of the protective element facing the anchor wedges can be reduced can.
  • the tension member can be tackled more strongly at the unloaded end. Now takes the density of the recesses in the direction of the loaded end of the Tension member, so the contact surface and thus the contact pressure in the direction of the burdened end diminished.
  • the contact pressure is via the protective element smeared and shifted towards the unloaded end of the tension member.
  • the shape of the recesses in the surface of the protective element plays a role in the Achievement of the desired effect only a subordinate role. So are punctiform Recesses are just as suitable as flat recesses. For manufacturing reasons have grooves oriented essentially perpendicular to the tension member in the surface of the anchor wedges and / or in the surface of the protective element proven to be advantageous.
  • the effect sought with the use of a protective element is then special well if the protective element is made of a material with a low modulus of elasticity, such as aluminum or copper.
  • a sliding layer is provided for the anchor wedges.
  • This sliding layer forms a defined one Sliding surface between the anchor wedges and the anchor body. A glide between the anchor wedges and the protective element and between the protective element and the tension member is thereby at least largely avoided.
  • the sliding layer could advantageously be realized in the form of a Teflon film.
  • the anchoring device proposed according to the invention is suitable also for prestressing tension members that are very sensitive to lateral pressure are.
  • Particularly important representatives of this class of tension members are Tension members made of fiber-reinforced and in particular carbon-fiber reinforced Plastics. Such tension members are very successful for subsequent reinforcement used by concrete components.
  • the anchoring device according to the invention now enables external pre-tensioning by pre-tensioning the tension members of concrete components. For this purpose, a slit in the surface of the post to be reinforced and externally preloaded component. The slot will expanded at least at one point for the anchoring device. The slot is then at least partially filled with a binder in which the Tension member is embedded at least in sections. Using the anchoring device the tension member can now be tightened until the binding agent has hardened. After the binder has hardened, the anchoring device can be removed again be, since the tension member is then held in the slot by the binder.
  • an anchoring device 1 for a tension member 2 is shown, the one Anchoring body 3 comprises, through which the tension member 2 is guided.
  • the anchoring device 1 further comprises two anchor wedges 4, with the aid of which the tension member 2 is fixed in the anchoring body 3.
  • the tension member 2 in the embodiment shown here is a CFRP slat, i.e. around a band-shaped tension member made of a carbon fiber reinforced Plastic. Accordingly, the anchoring device 1 also only two anchor wedge 4, symmetrical about the tension member, namely against the two Main surfaces of the tension member are arranged.
  • the anchoring device 1 additionally comprises two protective elements 5, each arranged between the anchor wedges 4 and the tension member 2 are so that the force input to the tension member 2 indirectly via the protective elements 5 is done.
  • the two protective elements 5 are protective plates that are directly on the two main surfaces of the tension member 2, arranged opposite each other are.
  • the surfaces of the anchor wedges 4 in contact with the protective elements 5 are provided with recesses 6, which is shown particularly clearly in FIG. 2 is. These are groove-shaped recesses 6, which are essentially are oriented perpendicular to the tension member 2. In the embodiment shown here are the grooves even, d. H. at equal intervals, on the surface of the Anchor wedges 4 distributed. The grooves 6 only serve to reduce the contact surface the anchor wedges 4. Due to a non-uniform distribution of recesses There may also be a non-uniform distribution in the surface of the anchor wedges the contact pressure can be achieved, which is particularly advantageous if one the ends, usually the loaded end of the tension member as free as possible from shear stress should be.
  • the protective plates 5 are made of one material Made with a low modulus of elasticity, namely made of aluminum, for example or copper.
  • sliding layer 7 on the surface of the anchor wedges facing away from the tension member 2 4 provided.
  • These sliding layers 7 are realized in the form of Teflon foils.
  • the sliding layers 7 facilitate the assembly of the anchoring device 1 in that as they represent defined sliding surfaces, which cause the arrangement of the anchor wedges to slip 4 and protective plates 5 around the tension member 2 when inserted into the anchoring body 3 prevent.
  • an anchoring device according to the invention with anchoring body, anchor wedges and at least one Protection element high efficiency for both static and dynamic Loads reached.
  • the anchoring device according to the invention Mount easily on the tension member. The tension members can therefore be simple are transported on rolls to the construction site, cut to length on site and first then be provided with an anchoring device.
  • anchoring device proposed according to the invention is entirely especially for anchoring and prestressing tendons made of fiber-reinforced Plastics and especially tapes made of carbon laser reinforced Suitable plastics, it can also be used in conjunction with other, for example stranded Tension members made of other materials are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Heat Treatment Of Articles (AREA)
EP99106872A 1998-04-08 1999-04-07 Dispositif d'ancrage pour tirants Expired - Lifetime EP0949389B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03023075A EP1380705B1 (fr) 1998-04-08 1999-04-07 Utilisation d'un dispositif d'ancrage pour tirants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19815823A DE19815823C2 (de) 1998-04-08 1998-04-08 Verankerungsvorrichtung für Zugglieder
DE19815823 1998-04-08

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03023075.9 Division-Into 2003-10-14

Publications (2)

Publication Number Publication Date
EP0949389A1 true EP0949389A1 (fr) 1999-10-13
EP0949389B1 EP0949389B1 (fr) 2004-06-16

Family

ID=7864042

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03023075A Expired - Lifetime EP1380705B1 (fr) 1998-04-08 1999-04-07 Utilisation d'un dispositif d'ancrage pour tirants
EP99106872A Expired - Lifetime EP0949389B1 (fr) 1998-04-08 1999-04-07 Dispositif d'ancrage pour tirants

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03023075A Expired - Lifetime EP1380705B1 (fr) 1998-04-08 1999-04-07 Utilisation d'un dispositif d'ancrage pour tirants

Country Status (3)

Country Link
EP (2) EP1380705B1 (fr)
AT (2) ATE279608T1 (fr)
DE (3) DE19815823C2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033433A1 (fr) * 2003-10-03 2005-04-14 University Of Waterloo Systeme d'ancrage en tension
WO2005061813A1 (fr) * 2003-12-22 2005-07-07 Austria Wirtschaftsservice Gesellschaft M.B.H. Ancrage pour elements de traction precontraints et/ou sollicites
EP2420622A1 (fr) * 2010-08-18 2012-02-22 Sika Technology AG Dispositif d'introduction de force dans des éléments de traction à partir de lamelles de bandes plates en matière synthétique renforcées en fibres
EP2631392A1 (fr) * 2012-02-21 2013-08-28 Sika Technology AG Dispositif d'introduction de force dans des éléments de traction à partir de lamelles de bandes plates en matière synthétique renforcées en fibres
CN102725452B (zh) * 2010-08-18 2016-12-14 Sika技术股份公司 将力导入由纤维增强的塑料扁带叠层构成的拉力件的装置
EP2633137B1 (fr) * 2010-10-28 2018-07-18 Sika Technology AG Ancrage d'extrémité de barres de traction sur des poutres en béton armé

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8327506B2 (en) 2007-01-09 2012-12-11 Wireco Worldgroup Inc. Socketing material and speltered assembly for terminating tension member
CA2769575C (fr) * 2009-08-12 2014-03-25 Tokyo Rope Manufacturing Co., Ltd. Structure et procede pour fixer un terminal de corps lineaire realise en matiere plastique renforcee par des fibres
CN101929221A (zh) * 2010-02-10 2010-12-29 山东省建筑科学研究院 纤维增强塑料片材用主动式锚夹具
CN101967867A (zh) * 2010-10-27 2011-02-09 西南交通大学 通用型碳纤维筋夹片式锚具
CN104870728B (zh) 2012-12-18 2018-03-02 乌本产权有限公司 锚、张紧设备、风能设备和用于将拉绳在锚上张紧的方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278718B (de) * 1962-06-30 1968-09-26 Rudolf Buehrer Vorrichtung zum Greifen und Verankern eines walzprofilierten Spannstabs, insbesondere eines Stabs mit Schraegrippen
DE6601081U (de) * 1966-03-23 1969-04-03 Rehm G Vorrichtung zur verankerung von stahlstaeben bzw. stahldraehten u. dgl. mit profilierter oberflaeche
DE2515423A1 (de) * 1974-04-26 1975-11-13 Felten & Guilleaume Ag Oester Verankerungsvorrichtung fuer verbundstraenge aus einem kunststoffkoerper und in diesen eingebetteten insbesondere parallelen draehten
GB1434716A (en) * 1972-08-02 1976-05-05 Ccl Systems Ltd Wedge type anchorage devices
GB2077343A (en) * 1980-05-24 1981-12-16 Strabag Bau Ag Anchorage devices for a bundle of tension wires
FR2562927A1 (fr) * 1984-04-12 1985-10-18 Guinet Derriaz Dalle de pierre a armature de precontrainte et procede pour sa fabrication
DE3438355A1 (de) * 1984-10-19 1986-04-24 Philipp Holzmann Ag, 6000 Frankfurt Keilverankerung fuer spanndrahtlitzen
FR2708017A1 (fr) * 1993-07-21 1995-01-27 Freyssinet Int Stup Perfectionnements aux mors tronconiques d'ancrage pour câbles et à leurs procédés de mise en Óoeuvre.
DE19730174A1 (de) * 1997-07-15 1999-02-11 Bilfinger Berger Bau Bauteil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009318A (en) * 1929-10-29 1935-07-23 Highfield John Somerville Method of joining together or anchoring wire cables and apparatus therefor
US2357733A (en) * 1942-02-03 1944-09-05 Columbus Mckinnon Chain Corp Anchor for flexible cables and a method of securing the same thereto
US2441304A (en) * 1947-10-13 1948-05-11 Maxwell A West Cable clamp
JPS58102845A (ja) * 1981-12-14 1983-06-18 Mitsubishi Heavy Ind Ltd ワイヤ−ロ−プのグリツプ装置
DD214419A1 (de) * 1983-03-10 1984-10-10 Verkehrswesen Hochschule Kerbwirkungsarme zentrische seilendbefestigung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278718B (de) * 1962-06-30 1968-09-26 Rudolf Buehrer Vorrichtung zum Greifen und Verankern eines walzprofilierten Spannstabs, insbesondere eines Stabs mit Schraegrippen
DE6601081U (de) * 1966-03-23 1969-04-03 Rehm G Vorrichtung zur verankerung von stahlstaeben bzw. stahldraehten u. dgl. mit profilierter oberflaeche
GB1434716A (en) * 1972-08-02 1976-05-05 Ccl Systems Ltd Wedge type anchorage devices
DE2515423A1 (de) * 1974-04-26 1975-11-13 Felten & Guilleaume Ag Oester Verankerungsvorrichtung fuer verbundstraenge aus einem kunststoffkoerper und in diesen eingebetteten insbesondere parallelen draehten
GB2077343A (en) * 1980-05-24 1981-12-16 Strabag Bau Ag Anchorage devices for a bundle of tension wires
FR2562927A1 (fr) * 1984-04-12 1985-10-18 Guinet Derriaz Dalle de pierre a armature de precontrainte et procede pour sa fabrication
DE3438355A1 (de) * 1984-10-19 1986-04-24 Philipp Holzmann Ag, 6000 Frankfurt Keilverankerung fuer spanndrahtlitzen
FR2708017A1 (fr) * 1993-07-21 1995-01-27 Freyssinet Int Stup Perfectionnements aux mors tronconiques d'ancrage pour câbles et à leurs procédés de mise en Óoeuvre.
DE19730174A1 (de) * 1997-07-15 1999-02-11 Bilfinger Berger Bau Bauteil

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005033433A1 (fr) * 2003-10-03 2005-04-14 University Of Waterloo Systeme d'ancrage en tension
WO2005061813A1 (fr) * 2003-12-22 2005-07-07 Austria Wirtschaftsservice Gesellschaft M.B.H. Ancrage pour elements de traction precontraints et/ou sollicites
US7857542B2 (en) 2003-12-22 2010-12-28 Austria Wirtschaftsservice Gesellschaft M.B.H. Anchoring for pre-tensioned and/or stressed tensile elements
EP2420622A1 (fr) * 2010-08-18 2012-02-22 Sika Technology AG Dispositif d'introduction de force dans des éléments de traction à partir de lamelles de bandes plates en matière synthétique renforcées en fibres
WO2012022783A1 (fr) * 2010-08-18 2012-02-23 Sika Technology Ag Dispositif d'induction de force dans des éléments de traction constitués de lamelles plates en matière plastique renforcée par des fibres
CN102725452A (zh) * 2010-08-18 2012-10-10 Sika技术股份公司 将力导入由纤维增强的塑料扁带叠层构成的拉力件的装置
CN102725452B (zh) * 2010-08-18 2016-12-14 Sika技术股份公司 将力导入由纤维增强的塑料扁带叠层构成的拉力件的装置
RU2612390C2 (ru) * 2010-08-18 2017-03-09 Сикэ Текнолоджи Аг Устройство для создания преднапряжения в стяжных элементах, выполненных из армированных волокном пластиковых плоских полосовых пластин
US9663963B2 (en) 2010-08-18 2017-05-30 Sika Technology Ag Device for introducing a force into tension members made of fiber-reinforced plastic flat strip lamellas
EP2633137B1 (fr) * 2010-10-28 2018-07-18 Sika Technology AG Ancrage d'extrémité de barres de traction sur des poutres en béton armé
EP2631392A1 (fr) * 2012-02-21 2013-08-28 Sika Technology AG Dispositif d'introduction de force dans des éléments de traction à partir de lamelles de bandes plates en matière synthétique renforcées en fibres
WO2013124304A1 (fr) * 2012-02-21 2013-08-29 Sika Technology Ag Dispositif pour l'application d'une force dans un élément de traction formé de lamelles de bande plate en matière plastique renforcée par des fibres

Also Published As

Publication number Publication date
ATE269462T1 (de) 2004-07-15
DE19815823A1 (de) 1999-10-21
DE19815823C2 (de) 2000-11-30
ATE279608T1 (de) 2004-10-15
DE59910866D1 (de) 2004-11-18
EP1380705B1 (fr) 2004-10-13
EP0949389B1 (fr) 2004-06-16
EP1380705A2 (fr) 2004-01-14
DE59909716D1 (de) 2004-07-22
EP1380705A3 (fr) 2004-01-28

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