EP0703326A1 - Elément de tension inoxydable pour la réalisation d'ouvrages en béton précontraint avec post-tension - Google Patents

Elément de tension inoxydable pour la réalisation d'ouvrages en béton précontraint avec post-tension Download PDF

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Publication number
EP0703326A1
EP0703326A1 EP95114352A EP95114352A EP0703326A1 EP 0703326 A1 EP0703326 A1 EP 0703326A1 EP 95114352 A EP95114352 A EP 95114352A EP 95114352 A EP95114352 A EP 95114352A EP 0703326 A1 EP0703326 A1 EP 0703326A1
Authority
EP
European Patent Office
Prior art keywords
disk
tension member
tension
holes
armature
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
EP95114352A
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German (de)
English (en)
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EP0703326B1 (fr
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.)
DYWIDAG-Systems International GmbH
Walter Bau AG
Original Assignee
Dyckerhoff and Widmann 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 Dyckerhoff and Widmann AG filed Critical Dyckerhoff and Widmann AG
Publication of EP0703326A1 publication Critical patent/EP0703326A1/fr
Application granted granted Critical
Publication of EP0703326B1 publication Critical patent/EP0703326B1/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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

Definitions

  • the invention relates to a corrosion-protected tension member, primarily a tendon for prestressed concrete without composite according to the preamble of claim 1.
  • prestressing In the construction of prestressed concrete structures, but especially in bridge structures, prestressing is known with and without bond. Prestressing with bond is usually carried out as prestressing with subsequent joining.
  • the tendons are held longitudinally movable by arrangement in cladding tubes within the concrete cross-section until the concrete has hardened and, after tensioning, are injected into the remaining annular spaces in connection with the building by injecting cement glue.
  • the tendons When prestressing without bond, the tendons are usually outside the concrete cross-section, but are supported against the building; they can be viewed at any time, retensioned and, if necessary, replaced.
  • tension elements i.e. steel wire strands, which are each arranged in a sheath made of plastic, for example polyethylene, and are surrounded by a plastically deformable corrosion protection compound, e.g. grease, which fills the annular space between the tension element and sheath (DE. DE 37 34 954 C2).
  • a plastically deformable corrosion protection compound e.g. grease
  • the anchor pot itself is inserted into an anchor tube, which forms the tubular casing of the tension member in the anchoring area.
  • an anchor tube which forms the tubular casing of the tension member in the anchoring area.
  • the strands can be retightened and exchanged and it is still possible to pass the anchor pot Press cavity between the coverings of the strands and the inner wall of the tubular cover in the free area of the tension member with hardening material, in particular cement mortar.
  • the invention has for its object to provide a simpler and more economical way of sealing the anchoring area of such a tension member from its free area, in which the cavity may also be wholly or partially with a hardening material, such as e.g. Cement paste, can be filled.
  • a hardening material such as e.g. Cement paste
  • the advantage of the invention is above all that the arrangement of the sealing plate immediately below the armature plate means that the previously required cavity filled with anti-corrosion compound can be completely dispensed with.
  • the envelopes of the individual tension elements are brought through the sealing washer to the armature disk or introduced into it, so that the corrosion protection compound surrounding the individual elements within their envelopes directly adjoins the material filling the bores in the armature disk. Since the material still adhering to the individual elements in the anchoring area after the coverings have been removed is stripped off when the anchoring wedges are pushed on and fills the bores including the blind hole-like extensions, it is usually possible to dispense with additional filling of corrosion protection compound into the bores.
  • the tension elements 2 consist of so-called monostrands, which are steel wire strands 3, which are used for protection against corrosion with coverings made of plastic, e.g. Envelope tubes 4, are provided and in which the cavity between the strands 3 and the envelope tubes 4 with a plastically deformable anti-corrosion compound, e.g. Fat, is filled.
  • the strands 3 are anchored by means of multi-part ring wedges 5 in conical bores 6 in an armature disk 7 made of steel.
  • the armature disk 7 is supported against an anchoring body 8 made of steel, which is embedded in a concrete component 9 and forms the tubular covering of the tension member 1 in this anchoring area.
  • the tubular casing sits in connection with the anchoring body 8 in a trumpet 10 made of plastic, e.g. PE, to which then a cladding tube 11, again made of plastic, e.g. PE, is sealingly connected.
  • the strands 3 with their envelopes 4 are passed through bores in a perforated disk 12, which in turn consists of plastic, primarily PE.
  • the perforated disk 12 is interposed with a sealing disk 13 provided with corresponding bores and made of an elastically deformable material, such as e.g. Neoprene, on the side of the armature disk 7 facing away from the air side.
  • Screw bolts 14 pass through the armature disk 7, the sealing disk 13 and the perforated disk 12 and permit the application of a surface pressure to the sealing disk 13, with the result of a transverse expansion causing a seal with respect to the envelopes 4 of the strands 2.
  • the coverings 4 are removed over an end region of a certain length; at this point, the envelopes 4 extend into blind-hole-like extensions 6a of the bores 6 in the armature disk 7.
  • FIGS. 3a to f shows individual successive working phases.
  • the tensioning channel remaining within the tubular casing can be coated with a hardening material, e.g. Cement mortar to be filled in order to arrange and fix the individual elements 2. After this material has hardened, the prestress is applied.
  • a hardening material e.g. Cement mortar
  • the strands 3 with the coverings 4 are inserted into the anchoring body 8; they extend beyond the anchoring by the length L required for tensioning or anchoring.
  • the perforated disk 12 and the sealing disk 13 have already been pushed onto the strands 3 with their envelopes 4.
  • the strands 3 are stripped to a length l in the region of the protruding length L, that is, they are freed from the sheaths 4 in order to be able to anchor the strands 3 individually (FIG. 3b).
  • the armature disk 7 is then pushed onto the exposed ends of the strands 3 (FIG. 3c), which is loosely connected to the perforated disk 12 with the sealing disk 13 interposed and pushed into the anchoring body 8 until it rests on its air-side support surface (FIG. 3d ). Since the sheaths 4 of the strands 3 can be shortened by temperature influences, it is recommended to leave the sheaths a little longer so that they come under compression pressure when the armature disk 7 is put on. The connection of the perforated disk 12 and the armature disk 7 takes place via the screw bolts 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Bridges Or Land Bridges (AREA)
EP95114352A 1994-09-22 1995-09-13 Elément de tension inoxydable pour la réalisation d'ouvrages en béton précontraint avec post-tension Expired - Lifetime EP0703326B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4433832 1994-09-22
DE4433832A DE4433832A1 (de) 1994-09-22 1994-09-22 Korrosionsgeschütztes Zugglied, vornehmlich Spannglied für Spannbeton ohne Verbund

Publications (2)

Publication Number Publication Date
EP0703326A1 true EP0703326A1 (fr) 1996-03-27
EP0703326B1 EP0703326B1 (fr) 1999-11-03

Family

ID=6528892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114352A Expired - Lifetime EP0703326B1 (fr) 1994-09-22 1995-09-13 Elément de tension inoxydable pour la réalisation d'ouvrages en béton précontraint avec post-tension

Country Status (2)

Country Link
EP (1) EP0703326B1 (fr)
DE (2) DE4433832A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999036641A1 (fr) * 1998-01-19 1999-07-22 Suspa Spannbeton Gmbh Dispositif d'ancrage pour ancre de tension et/ou ancre fixe
FR2783266A1 (fr) * 1998-09-16 2000-03-17 Spie Precontrainte Organe d'ancrage remplacable, dispositif de protection mixte , systeme de precontrainte exterieure remplacable et ouvrage
RU2178489C1 (ru) * 2001-04-02 2002-01-20 Открытое акционерное общество "Мостотрест" Устройство для сопряжения анкерного стакана и каналообразователя
US7174684B2 (en) 2003-08-02 2007-02-13 Dywidag-Systems International Gmbh Corrosion-resistant tension member, particularly a tendon for prestressed concrete
US7181890B2 (en) 2002-04-03 2007-02-27 Dywidag-Systems International Gmbh Anchoring device for a corrosion-resistant tension member, particularly an inclined cable for a cable-stayed bridge
KR101104212B1 (ko) * 2008-06-04 2012-01-10 아주대학교산학협력단 프리스트레스 강선 정착 장치
CN103147538A (zh) * 2013-03-01 2013-06-12 柳州欧维姆机械股份有限公司 一种锚头密封结构组件
DE102013215136A1 (de) 2013-08-01 2015-02-05 Dywidag-Systems International Gmbh Korrosionsgeschütztes Zugglied und plastisch verformbare Scheibe aus Korrosionsschutzmaterial für ein derartiges Zugglied
CN104563395A (zh) * 2015-01-06 2015-04-29 大连理工大学 一种体外预应力锚具防腐结构

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1058726A (ja) * 1996-06-13 1998-03-03 Ricoh Co Ltd 画像記録装置
DE19833273A1 (de) * 1998-07-24 2000-01-27 Josef Eibl Spanngliedanordnung
DE19918438A1 (de) * 1999-04-23 2000-11-09 Dyckerhoff & Widmann Ag Korrosionsgeschütztes Stahlzugglied
EP2550400B2 (fr) 2010-03-26 2023-06-14 VSL International AG Agencement d'étanchéité
KR20190097322A (ko) 2011-04-15 2019-08-20 소레탄체 프레씨네트 멀티-텐돈 케이블 단부 보호방법
CN111041970B (zh) * 2019-12-17 2021-03-16 北京市第三建筑工程有限公司 预应力单耳拉索及其张拉方法
CN113137007A (zh) * 2021-04-27 2021-07-20 郑亮 一种碳纤维板锚具

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148351A (en) * 1983-10-19 1985-05-30 Manuf Aceros Caucho Sa Cable anchorage
DE3734954A1 (de) * 1987-03-13 1988-04-07 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund und verfahren zu seinem einbau
DE3644551A1 (de) * 1986-12-24 1988-07-07 Zueblin Ag Verankerung fuer ein verbundloses spannglied
EP0323285A1 (fr) * 1987-11-25 1989-07-05 Freyssinet International (Stup) Perfectionnements aux ensembles constitués par un hauban et sa structure d'ancrage
DE3801451A1 (de) * 1987-10-15 1989-08-03 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund
FR2628777A1 (fr) * 1988-03-18 1989-09-22 Vsl France Dispositif d'ancrage de cables precontraints pour ouvrages du type maconnerie
DE9012786U1 (de) * 1990-09-07 1990-11-08 Dyckerhoff & Widmann AG, 8000 München Spannbares Zugglied, insbesondere Spannglied für Spannbeton
DE4118897A1 (de) * 1991-06-08 1992-12-10 Hochtief Ag Hoch Tiefbauten Bauwerkslagereinrichtung fuer ein spannglied und verfahren zum auswechseln eines solchen spanngliedes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831518C2 (de) * 1988-09-16 1994-12-22 Holzmann Philipp Ag Spannglied in polygonartiger Anordnung sowie Verfahren zum Einziehen des Spannglieds

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148351A (en) * 1983-10-19 1985-05-30 Manuf Aceros Caucho Sa Cable anchorage
DE3644551A1 (de) * 1986-12-24 1988-07-07 Zueblin Ag Verankerung fuer ein verbundloses spannglied
DE3734954A1 (de) * 1987-03-13 1988-04-07 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund und verfahren zu seinem einbau
DE3734954C2 (fr) 1987-03-13 1992-07-09 Dyckerhoff & Widmann Ag, 8000 Muenchen, De
DE3801451A1 (de) * 1987-10-15 1989-08-03 Dyckerhoff & Widmann Ag Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund
EP0323285A1 (fr) * 1987-11-25 1989-07-05 Freyssinet International (Stup) Perfectionnements aux ensembles constitués par un hauban et sa structure d'ancrage
EP0323285B1 (fr) 1987-11-25 1992-05-13 Freyssinet International (Stup) Perfectionnements aux ensembles constitués par un hauban et sa structure d'ancrage
FR2628777A1 (fr) * 1988-03-18 1989-09-22 Vsl France Dispositif d'ancrage de cables precontraints pour ouvrages du type maconnerie
DE9012786U1 (de) * 1990-09-07 1990-11-08 Dyckerhoff & Widmann AG, 8000 München Spannbares Zugglied, insbesondere Spannglied für Spannbeton
DE4118897A1 (de) * 1991-06-08 1992-12-10 Hochtief Ag Hoch Tiefbauten Bauwerkslagereinrichtung fuer ein spannglied und verfahren zum auswechseln eines solchen spanngliedes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999036641A1 (fr) * 1998-01-19 1999-07-22 Suspa Spannbeton Gmbh Dispositif d'ancrage pour ancre de tension et/ou ancre fixe
FR2783266A1 (fr) * 1998-09-16 2000-03-17 Spie Precontrainte Organe d'ancrage remplacable, dispositif de protection mixte , systeme de precontrainte exterieure remplacable et ouvrage
RU2178489C1 (ru) * 2001-04-02 2002-01-20 Открытое акционерное общество "Мостотрест" Устройство для сопряжения анкерного стакана и каналообразователя
US7181890B2 (en) 2002-04-03 2007-02-27 Dywidag-Systems International Gmbh Anchoring device for a corrosion-resistant tension member, particularly an inclined cable for a cable-stayed bridge
US7174684B2 (en) 2003-08-02 2007-02-13 Dywidag-Systems International Gmbh Corrosion-resistant tension member, particularly a tendon for prestressed concrete
KR101104212B1 (ko) * 2008-06-04 2012-01-10 아주대학교산학협력단 프리스트레스 강선 정착 장치
CN103147538A (zh) * 2013-03-01 2013-06-12 柳州欧维姆机械股份有限公司 一种锚头密封结构组件
DE102013215136A1 (de) 2013-08-01 2015-02-05 Dywidag-Systems International Gmbh Korrosionsgeschütztes Zugglied und plastisch verformbare Scheibe aus Korrosionsschutzmaterial für ein derartiges Zugglied
CN104563395A (zh) * 2015-01-06 2015-04-29 大连理工大学 一种体外预应力锚具防腐结构

Also Published As

Publication number Publication date
DE4433832A1 (de) 1996-03-28
DE59507171D1 (de) 1999-12-09
EP0703326B1 (fr) 1999-11-03

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