EP1380705B1 - Utilisation d'un dispositif d'ancrage pour tirants - Google Patents

Utilisation d'un dispositif d'ancrage pour tirants Download PDF

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Publication number
EP1380705B1
EP1380705B1 EP03023075A EP03023075A EP1380705B1 EP 1380705 B1 EP1380705 B1 EP 1380705B1 EP 03023075 A EP03023075 A EP 03023075A EP 03023075 A EP03023075 A EP 03023075A EP 1380705 B1 EP1380705 B1 EP 1380705B1
Authority
EP
European Patent Office
Prior art keywords
tension member
tension
anchorage device
anchor wedges
anchoring device
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
Application number
EP03023075A
Other languages
German (de)
English (en)
Other versions
EP1380705A2 (fr
EP1380705A3 (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 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 Berger AG filed Critical Bilfinger Berger AG
Publication of EP1380705A2 publication Critical patent/EP1380705A2/fr
Publication of EP1380705A3 publication Critical patent/EP1380705A3/fr
Application granted granted Critical
Publication of EP1380705B1 publication Critical patent/EP1380705B1/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 the use of an anchoring device for tension members, especially for tension members made of fiber-reinforced plastic, for external Pretensioning a component with the aid of a tension member, the anchoring device an anchoring body through which the tension member is guided, and at least comprises two anchor wedges which are arranged around the tension member and with whose help the tension member is fixed in the anchor body, at least a protective element is provided between the anchor wedges and the tension member is arranged so that the force input to the tension member indirectly via the Protective element takes place.
  • 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 Example with resin, potted so that the tension member is fixed in the sleeve.
  • This Potting requires precise work and is very complex overall, so that Use of such potting anchors as a rule on construction sites is not economical.
  • clamping anchoring In the case of clamping anchoring, 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 Longitudinal pressed. The resulting friction enables the pretension required force transmission into the tension member.
  • Clamp anchorages have that The advantage that they can be installed relatively easily at any point on a tension member are.
  • clamping 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 are here fiber-reinforced plastics - in particular from carbon fiber-reinforced plastics (CFK) - called.
  • CFRK carbon fiber-reinforced plastics
  • Such tension members are used, for example, as reinforcement elements used in concrete construction. The prestressing of the tension members or reinforcement elements leads here to an improved load-bearing behavior of the concrete component under working load.
  • FR-A-2 708 017 is a use of an anchoring device for Tension members with the features of the preamble of claim 1 are known.
  • the Known anchoring device has an anchoring body through which the Tension member is guided, and two anchor wedges arranged around the tension member and with the help of which the tension member is fixed in the anchoring body.
  • a protective element is provided between the anchor wedges and the tension member. The surfaces of the anchor wedges which are in contact with the protective element have in evenly spaced recesses.
  • the anchoring device has an anchoring body, through which the tension member is guided, and two anchor wedges, which around the tension member can be arranged. Furthermore, between the anchor wedges and the tension member provided a protective element.
  • DE-A-25 15 423 also discloses the use of an anchoring device known for tension members.
  • the anchoring device has an anchoring body, through which the tension member is guided, and two anchor wedges around the tension member to be ordered. There is a between the anchor wedges and the tension member Protective element provided.
  • DE 12 78 718 B describes the use of an anchoring device for tension members with an anchoring body through which the tension member is guided is known, and with two anchor wedges, which are arranged around the tension member. A protective element is arranged between the anchor wedges and the tension member.
  • the object of the invention is to use an anchoring device of the type in question, in which a subsequent Reinforcement of concrete components is possible.
  • an anchoring device solves the above Task by the features of claim 1. Then at least If a slit is created in the surface of the component, the slit becomes at least a location for the anchoring device expanded and at least in some areas filled with a binder and the tension member is at least in sections placed in the slot and using the anchoring device tense until the binder has hardened.
  • the slot is on at least one Expanded site for the anchoring device.
  • the slot will then at least partially filled with a binder, in which the tension member at least in sections is embedded.
  • the tension member can now be tightened until the binder has hardened.
  • the anchoring device can be removed again, since the Tension member is held in the slot by the binder.
  • the anchoring device is also suitable for prestressing tension members are very sensitive to lateral pressure.
  • 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 subsequent reinforcement of concrete components used.
  • Using an anchoring device is external pretensioning of Concrete components made possible by prestressing the tension members.
  • the contact surface is reduced.
  • HOT STUFF become the frictional forces caused by the transverse pressure uniform.
  • the tension member should be as free as possible on the load side Shear stresses, because shear stress peaks here to break the tension member being able to lead. For this, the tension member can be tackled more strongly at the unloaded end become.
  • the density of the recesses could be in the direction of the load End of the tension member become larger.
  • 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 could advantageously enclose the tension member as positively as possible.
  • the sleeve could be made of a deformable material, such as. B. sheet metal, be made and have a slot.
  • Such a sleeve could be used for assembly and adaptation to stranded tension members with different diameters simply bent apart or pressed together.
  • Tension members made of fiber-reinforced plastics are often in the form of strips or Slats in front.
  • An anchoring device designed for such band-shaped tension members comprises at least two plate-shaped protective elements on the two main surfaces of the band-shaped tension member arranged opposite each other become.
  • the area dimensioning of the plate-shaped protective elements should be matched to the width of the band-shaped tension member.
  • the shape of the recesses in the surface of the protective element plays only one subordinate role. Point recesses are just as suitable as flat recesses. For manufacturing reasons have essentially grooves oriented perpendicular to the tension member in the surface of the anchor wedges and / or in the surface of the protective element has 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.
  • 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 is a CFRP slat, i.e. around a band-shaped Tension member 2 made of a carbon fiber reinforced plastic. Accordingly the anchoring device 1 also comprises only two anchor wedges 4 which are symmetrical around the tension member 2, namely against the two main surfaces of the tension member 2 are arranged.
  • the anchoring device 1 additionally comprises two protective elements 5, each are arranged between the anchor wedges 4 and the tension member 2, so that the Force is applied to the tension member 2 indirectly via the protective elements 5.
  • 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 that are 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.
  • the grooves are even, i. H. in evenly spaced on the surface of the anchor wedges 4.
  • the grooves 6 serve here only to reduce the contact surface of the anchor wedges 4. Not by one uniform distribution of recesses in the surface of the anchor wedges can also a non-uniform distribution of the contact pressure can be achieved, which in particular is advantageous if one of the ends, usually the loaded end of the Tension member should be as free as possible from shear stress.
  • 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 that 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.
  • anchoring device is particularly suitable for anchoring and Prestressing tendons made of fiber-reinforced plastics and in particular suitable for tapes made of carbon fiber reinforced plastics in connection with other, for example strand-like tension members from others 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)

Claims (4)

  1. Utilisation d'un dispositif d'ancrage (1) pour des tirants (2), en particulier des tirants (2) en matière synthétique renforcée par des fibres, lors de la précontrainte externe d'un élément préfabriqué à l'aide d'un tirant (2), le dispositif d'ancrage (1) comprenant un corps d'ancrage (3) à travers lequel le tirant (2) est guidé et au moins deux coins d'ancrage (4) qui sont disposés autour du tirant (2) et à l'aide desquels le tirant (2) est fixé dans le corps d'ancrage (3), au moins un élément de protection (5) étant prévu qui est disposé entre les coins d'ancrage (4) et le tirant (2) de telle sorte que l'introduction de force a lieu indirectement sur le tirant (2) par l'intermédiaire de l'élément de protection (5),
    caractérisée par le fait qu'au moins une rainure est engendrée dans la surface de l'élément préfabriqué, la rainure est élargie à au moins un emplacement pour le dispositif d'ancrage (1) et est remplie au moins par zones par un liant et le tirant (2) est disposé au moins par zones dans la rainure et est tendu à l'aide du dispositif d'ancrage (1) jusqu'à ce que le liant soit durci.
  2. Utilisation d'un dispositif d'ancrage (1) selon la revendication 1,
    caractérisée par le fait que l'élément de protection (5) est réalisé sous forme d'une douille, de préférence fendue, ou qu'au moins deux éléments de protection (5) en forme de plaques sont prévus.
  3. Utilisation d'un dispositif d'ancrage (1) selon la revendication 1 ou 2,
    caractérisée par le fait que les surfaces des coins d'ancrage (4) se trouvant en contact avec l'élément de protection (5) et/ou la surface de l'élément de protection (5) se trouvant en contact avec les coins d'ancrage (4) sont munies d'évidements, la profondeur des évidements (6) augmentant en direction de l'extrémité chargée du tirant (2).
  4. Utilisation d'un dispositif d'ancrage (1) selon l'une des revendications 1 à 3,
    caractérisée par le fait qu'une couche de glissement (7), de préférence réalisée sous forme d'une feuille de téflon, est prévue sur la face des coins d'ancrage (4) écartée du tirant (2).
EP03023075A 1998-04-08 1999-04-07 Utilisation d'un dispositif d'ancrage pour tirants Expired - Lifetime EP1380705B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19815823A DE19815823C2 (de) 1998-04-08 1998-04-08 Verankerungsvorrichtung für Zugglieder
DE19815823 1998-04-08
EP99106872A EP0949389B1 (fr) 1998-04-08 1999-04-07 Dispositif d'ancrage pour tirants

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP99106872.7 Division 1999-04-07

Publications (3)

Publication Number Publication Date
EP1380705A2 EP1380705A2 (fr) 2004-01-14
EP1380705A3 EP1380705A3 (fr) 2004-01-28
EP1380705B1 true EP1380705B1 (fr) 2004-10-13

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 After (1)

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

Country Status (3)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2536304C (fr) * 2003-10-03 2010-09-21 University Of Waterloo Systeme d'ancrage en tension
AT412564B (de) * 2003-12-22 2005-04-25 Burtscher Stefan L Dipl Ing Dr Keilverankerung für vorgespannte und/oder belastete zugelemente
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
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
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
EP2447446A1 (fr) * 2010-10-28 2012-05-02 Sika Technology AG Ancrage terminal d'éléments de traction sur des supports 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
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

Family Cites Families (14)

* 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
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
AT328156B (de) * 1974-04-26 1976-03-10 Felten & Guilleaume Ag Oester Verankerungsvorrichtung fur verbundstrange aus einem kunststoffkorper und in diesen eingebetteten insbesondere parallelen drahten
CH657406A5 (de) * 1980-05-24 1986-08-29 Strabag Bau Ag Verankerung fuer ein buendel von spanndraehten.
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
FR2562927B1 (fr) * 1984-04-12 1988-03-18 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
FR2708017B1 (fr) * 1993-07-21 1995-09-22 Freyssinet Int Stup Perfectionnements aux mors tronconiques d'ancrage pour câbles et à leurs procédés de mise en Óoeuvre.
DE19730174C2 (de) * 1997-07-15 2001-12-06 Bilfinger Berger Bau Bauteil

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
EP0949389A1 (fr) 1999-10-13
EP0949389B1 (fr) 2004-06-16
EP1380705A2 (fr) 2004-01-14
DE59909716D1 (de) 2004-07-22
EP1380705A3 (fr) 2004-01-28

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