EP0244353B1 - Verfahren zur Herstellung eines ausbaubaren Zuggliedes - Google Patents

Verfahren zur Herstellung eines ausbaubaren Zuggliedes Download PDF

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Publication number
EP0244353B1
EP0244353B1 EP87810235A EP87810235A EP0244353B1 EP 0244353 B1 EP0244353 B1 EP 0244353B1 EP 87810235 A EP87810235 A EP 87810235A EP 87810235 A EP87810235 A EP 87810235A EP 0244353 B1 EP0244353 B1 EP 0244353B1
Authority
EP
European Patent Office
Prior art keywords
tension member
central
anchored
tension
separation
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
EP87810235A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0244353A1 (de
Inventor
International Ag Vsl
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.)
VSL International Ltd
Original Assignee
VSL International Ltd
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 VSL International Ltd filed Critical VSL International Ltd
Priority to AT87810235T priority Critical patent/ATE49253T1/de
Publication of EP0244353A1 publication Critical patent/EP0244353A1/de
Application granted granted Critical
Publication of EP0244353B1 publication Critical patent/EP0244353B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable

Definitions

  • the invention is based on a method for producing a tension member to be anchored in the ground or structure and to be subjected to a load, composed of a central link and a plurality of outer links arranged concentrically to the central link, which tension link is intended to be used from the ground or structure after use to be largely removed, and a tension member manufactured in this process.
  • excavation pits are often enclosed by slotted or sheet pile walls, which are anchored on the back by means of grouting anchors with tension members.
  • the tension members are anchored in the ground at the grout anchors and are preloaded to a load.
  • the tension members can also be used in the buildings themselves, e.g. is the case with supports of a bridge. There forces can act on the supports during the construction of the bridge, which necessitate temporary reinforcement of them by tension members.
  • the tension members are removed from the ground or structure and can possibly be reused. There are regulations in some countries that the grout anchors must be removed after the construction work has been completed.
  • DE-OS 30 39 080 describes a recoverable reinforcement element for an anchor.
  • the tension member for a grouted anchor consists of two or more steel bars.
  • the basic idea of this known solution is to embed the spacers between the individual steel rods of the tension member in spread form in the pressing body. By pulling or destroying the detachable spacers, freedom of movement is created for the individual steel bars. After the introduction of a tensile force from the air-side anchoring end while overcoming the shear bond between the steel bars and the pressing body, these are pulled out of the pressing anchor one after the other and thus recovered.
  • DE-PS 26 27 524 describes a grout anchor with a tension member surrounded by a cladding tube.
  • the tension member in the form of a steel wire rope extends through the cladding tube and is slidably disposed therein.
  • the end of the tension member on the earth side is passed through an anchor foot and held by means of a sleeve which is supported against the anchor foot.
  • the basic idea of this solution is that an adhesive is applied as an intermediate layer between the sleeve and the tension member and is pressed through the sleeve onto the tension member.
  • the tensioning action of the sleeve is dimensioned such that the maximum tensile force required to pull out the tension member is somewhat greater than the force exerted on the tension member in the state of use.
  • the invention specified in claim 1 is based on the object of proposing a method for producing a removable tension member, in which the tension member can be easily manufactured and the load required for removing the tension member can be calculated in advance.
  • a tension member can be used not only in grouted anchors, but also in other areas.
  • tension member 1 When producing a tension member 1 to be anchored in the ground or structure and to be subjected to a load, composed of a central link 2 and a plurality of outer links 3 arranged concentrically to the central link 2, which tension link is intended to be largely removed from the soil or structure after use are proceeded as follows: In the area L (see FIG. 1) of the part 1a of the tension member 1 to be anchored, the central member 2 is completely severed.
  • the tension member 1 according to FIG. 1 consists of a steel wire rope.
  • the twisted outer members 3, which are made of wires are spread apart and the central member 2, which is also made of a wire, is completely sawn through the opening which is thereby created.
  • the tension member 1 consists of a central steel rod and a plurality of outer steel rods concentric and parallel to one another around the central steel rod
  • the central member 2 consisting of the central steel rod is sawn through or sheared off before the tension member 1 is put together.
  • a support element 5 is attached around the separation point 4 by pressing.
  • 1, 3, 4, 5 and 9 consists of a sleeve which is pressed around the same in the area L of the part 1 a of the tension member 1 to be anchored. 6 and 8, the support element 5, together with two wedge-shaped parts 14 and 15 arranged therein, forms a wedge anchor.
  • the surface of the inner wedge-shaped parts 14 and 15 abutting the tension member 1 is provided with a toothing 13.
  • an insert 11 is provided between the inner bore of the pressing sleeve and the circumference of the outer members 3, the material of which is harder than the materials of the pressing sleeve 5 and the tension member 1.
  • one or more of the outer links 3 of the tension member I is completely severed. In no case, however, are all outer members 3 of the tension member 1 completely severed.
  • the central member 2 is always completely severed. At least one outer member 3 is completely severed in the area L of the part 1 of the tension member 1 to be anchored, approximately in the vicinity of the separation point 4 of the central member 2. Then, as mentioned above, the support element 5 is attached to the tension member 1 in the region of the separation point 4 and the separation point 6 of the outer element 3 by transverse pressing.
  • the position of the separation point 4 of the central member 2 can be determined in the region L of the part la of the tension member 1 to be anchored, depending on the size of the load P to be exerted on the tension member 1 during its removal. If the distance L ! between the separation point 4 of the central member 2 and the end of the area L lying in the direction of the load P to be exerted is smaller than that distance L @ between the separation point 4 and the end of the area L of the part L a to be anchored lying in the opposite direction of the load P to be exerted , then the size of the load P to be exerted becomes smaller than that load if the distance L @ were smaller.
  • the load P must be kept as small as possible, but larger than the required working load; then one or more of the outer members 3 of the tension member 1 can also be completely severed in the region of the support element 5.
  • the load to be exerted on the tension member 1, in which the assembled tension member 1 can be removed will be in the following limit range: Required working load ⁇ on the tension member for the purpose of removing it, P ⁇ breaking load of the complete tension member.
  • an abutment 8 is shown, against which the support element 5 is supported with its side facing away from the part 1a to be anchored.
  • This abutment has the same function as the anchor base on a press anchor.
  • 6 to 10 show that the active part of the tension member 1 is arranged in a protective tube 9 net and that the space is filled with a lubricant 10.
  • FIGS. 8 to 10 have an elongated passive part 1a (part to be anchored) of the tension member, which part is still anchored in the concrete body 12 behind the support element 5.
  • clamping sleeves 7 are indicated on the outer steel rods 3, which are concentric about a central rod and parallel to one another. By means of these clamping sleeves 7, the outer steel rods 3 are pressed against the central rod 2 and held together with the same. There is no need for an abutment here because the concrete body 12 provides sufficient support for the support element 5 and the passive part 1a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Sawing (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Materials For Medical Uses (AREA)
  • Ropes Or Cables (AREA)
  • Springs (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
EP87810235A 1986-04-28 1987-04-14 Verfahren zur Herstellung eines ausbaubaren Zuggliedes Expired - Lifetime EP0244353B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87810235T ATE49253T1 (de) 1986-04-28 1987-04-14 Verfahren zur herstellung eines ausbaubaren zuggliedes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1721/86 1986-04-28
CH1721/86A CH671057A5 (ja) 1986-04-28 1986-04-28

Publications (2)

Publication Number Publication Date
EP0244353A1 EP0244353A1 (de) 1987-11-04
EP0244353B1 true EP0244353B1 (de) 1990-01-03

Family

ID=4217048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810235A Expired - Lifetime EP0244353B1 (de) 1986-04-28 1987-04-14 Verfahren zur Herstellung eines ausbaubaren Zuggliedes

Country Status (10)

Country Link
US (1) US4884377A (ja)
EP (1) EP0244353B1 (ja)
JP (1) JPH0617580B2 (ja)
KR (1) KR960004407B1 (ja)
AT (1) ATE49253T1 (ja)
AU (1) AU591271B2 (ja)
CH (1) CH671057A5 (ja)
DE (1) DE3761317D1 (ja)
HK (1) HK93091A (ja)
MY (1) MY101729A (ja)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY108500A (en) * 1988-07-06 1996-10-31 Vsl Int Ag Method of producing a tension part anchorable in the earth.
US5230589A (en) * 1992-03-23 1993-07-27 Gillespie Harvey D Mine roof bolt
CA2107826C (en) * 1993-01-28 1999-04-27 Harvey D. Gillespie Mine roof bolt
US5511909A (en) * 1994-06-07 1996-04-30 Jennmar Corporation Cable bolt and method of use in supporting a rock formation
DE19500091C1 (de) * 1995-01-04 1996-04-04 Dyckerhoff & Widmann Ag Verfahren zum Erzeugen einer Sollbruchstelle an einem Zugglied für einen Verpreßanker
DE19732023A1 (de) * 1997-07-25 1999-01-28 Drahtwerk Koeln Gmbh Verfahren zum Herstellen und zum Entfernen einer Litze mit Soll-Bruchstelle
NL1007078C2 (nl) * 1997-09-19 1999-03-22 Ballast Nedam Funderingstechni Trekorgaan met bezwijkmiddelen.
AU2002359987A1 (en) * 2002-07-04 2004-01-23 Jong Duck Shin Apparatus and method for releasing tension members for use in anchor method
US6881015B2 (en) 2002-10-16 2005-04-19 Dywidag-Systems International, U.S.A., Inc. Wedge barrel for a mine roof cable bolt
US7384216B2 (en) * 2004-09-16 2008-06-10 Dywidag-Systems International Usa Cable coupler having retained wedges
US7690868B2 (en) * 2003-12-02 2010-04-06 Dsi Ground Support Inc. Cable coupler having retained wedges
US7066688B2 (en) * 2004-08-17 2006-06-27 Dywidag-Systems International Usa Wedge barrel for a twin cable mine roof bolt
US7415746B2 (en) * 2005-12-01 2008-08-26 Sc Solutions Method for constructing a self anchored suspension bridge
US8069624B1 (en) * 2007-10-17 2011-12-06 Sorkin Felix L Pocketformer assembly for a post-tension anchor system
US8602690B2 (en) * 2008-12-23 2013-12-10 Hani Sabri Mitri Sleeved cable bolt
WO2011075779A1 (en) * 2009-12-23 2011-06-30 Geotech Pty Ltd An anchorage system
CN109972613B (zh) * 2019-04-28 2024-02-23 中冶沈勘工程技术有限公司 可回收式锚固机构及施工方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943434A (en) * 1956-03-16 1960-07-05 Bethlehem Steel Corp Splice and method of making the same
US2959436A (en) * 1956-09-13 1960-11-08 William J Duda Terminal and splicing fittings for wire rope and the like
US3356397A (en) * 1965-05-07 1967-12-05 Percy R Bagby Wire rope long splice and method of making
US3355542A (en) * 1966-09-23 1967-11-28 Preformed Line Products Co Preformed helical appliance for linear bodies
US3844697A (en) * 1968-08-27 1974-10-29 H Edwards Tendon anchorage assembly with threaded support member for concrete formwork
US3936256A (en) * 1969-04-16 1976-02-03 Conenco International Limited Tendon anchorage and mounting means
US3921353A (en) * 1972-02-04 1975-11-25 Howlett Machine Works Tendon anchorage assembly and bore mounting apparatus therefor
US3936924A (en) * 1973-09-21 1976-02-10 Yoshio Ichise Releaseable steel cable anchor and method for withdrawing the same
US4069677A (en) * 1975-06-20 1978-01-24 Kabushiki Kaisha Nitto Tekuno Group Anchor and method for constructing same
US4160615A (en) * 1978-03-23 1979-07-10 The International Nickel Company, Inc. Cable rock anchor
DE8002045U1 (de) * 1980-01-26 1980-04-30 Dyckerhoff & Widmann Ag, 8000 Muenchen Wiedergewinnbares schalungsteil fuer den verankerungsbereich eines spannglieds in einem betonbauteil
JPS5736690U (ja) * 1980-08-12 1982-02-26
DE3039080C2 (de) * 1980-10-16 1985-03-07 Dyckerhoff & Widmann AG, 8000 München Ausbaubares, mehrteiliges Zugglied für einen Verpreßanker
US4604003A (en) * 1983-02-22 1986-08-05 Francoeur Ronald A Method and apparatus for retensioning prestressed concrete members

Also Published As

Publication number Publication date
JPH0617580B2 (ja) 1994-03-09
JPS62296013A (ja) 1987-12-23
HK93091A (en) 1991-11-29
EP0244353A1 (de) 1987-11-04
MY101729A (en) 1992-01-17
ATE49253T1 (de) 1990-01-15
AU7197787A (en) 1987-10-29
KR870010259A (ko) 1987-11-30
AU591271B2 (en) 1989-11-30
KR960004407B1 (ko) 1996-04-02
US4884377A (en) 1989-12-05
DE3761317D1 (de) 1990-02-08
CH671057A5 (ja) 1989-07-31

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