EP0338388B1 - Tirant d'ancrage de sol tensionable - Google Patents

Tirant d'ancrage de sol tensionable Download PDF

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Publication number
EP0338388B1
EP0338388B1 EP19890106428 EP89106428A EP0338388B1 EP 0338388 B1 EP0338388 B1 EP 0338388B1 EP 19890106428 EP19890106428 EP 19890106428 EP 89106428 A EP89106428 A EP 89106428A EP 0338388 B1 EP0338388 B1 EP 0338388B1
Authority
EP
European Patent Office
Prior art keywords
members
grouting
anchor
tension members
tension
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
EP19890106428
Other languages
German (de)
English (en)
Other versions
EP0338388A3 (en
EP0338388A2 (fr
Inventor
Ernst Dipl.-Ing. Reichert
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.)
TGB TECHNOGRUNDBAU GMBH
Original Assignee
TGB TECHNOGRUNDBAU GmbH
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 TGB TECHNOGRUNDBAU GmbH filed Critical TGB TECHNOGRUNDBAU GmbH
Priority to AT89106428T priority Critical patent/ATE75510T1/de
Publication of EP0338388A2 publication Critical patent/EP0338388A2/fr
Publication of EP0338388A3 publication Critical patent/EP0338388A3/de
Application granted granted Critical
Publication of EP0338388B1 publication Critical patent/EP0338388B1/fr
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
    • 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

Definitions

  • the invention relates to a clampable compression anchor with the features of the respective preambles of claims 1, 2 or 3.
  • a compression anchor in which the tension members formed by rods are held bundled with ribbing by spaced-apart holders.
  • spacers require an unnecessarily large borehole cross section and thus unnecessarily high manufacturing costs.
  • these spacers hinder the longitudinal flow of the hardening building material in the tension member bundle.
  • a tension cable in particular for inclined cable bridges made of prestressed concrete, is known, in which a large number of tension rods are arranged in a ring around a central injection channel. Smooth tendons and ribbed tendons are used as tendons. The arrangement is such that several concentric hexagon patterns are formed. The tendon is surrounded by a metallic tube as a sheath. Here tendons with different training in a very specific arrangement are necessary. The formation of a tie anchor is complex.
  • a tendon for prestressed concrete constructions and prestressed concrete prefabricated parts is known from PCT application WO 85/05394, which comprises a central monostrand which consists of several twisted rods. This tensionable monostrand is arranged in a steel jacket. The monostrand forming a tendon is surrounded by a slack reinforcement, which is formed from longitudinally arranged main reinforcement bars. A spacer is used as spacers for these main reinforcement bars, which has at least one spiral bar that surrounds the steel jacket of the monostrand. No spacers are provided for the twisted rods of the monostrand itself. If the steel jacket and possibly a flame retardant jacket are dispensed with, the concrete can form a kind of interlocking with the monostrand, but there is no guarantee that the monostrand will flow through the concrete.
  • the invention has for its object to provide a clampable grouting anchor that largely retains the advantage of the smallest possible borehole cross-section, but on the other hand no increased grouting length, no increased free steel length and no increased grouting time for the hardening building material makes necessary.
  • the grout should also be inexpensive to manufacture.
  • the longitudinal flow of the hardening building material in the tension member bundle should not be hindered.
  • the tensionable ground anchor 1 has a plurality of tension members 3 accommodated in a borehole 2, which are surrounded by hardenable, injected building material at least over the compression path.
  • the individual tension members 3 are formed from steel rods or steel strands. They are held together by holders 5, which are arranged at a distance from one another.
  • At least one central tension member 3 ' is surrounded by outer, ring-shaped tension members 3.
  • the central tension member 3 ' receives a spacer in the form of a helix 6. This is available at least over the pressing section with injected, hardening building material. It is formed by a plastic cord which is wound on the central tension member 3 'with a preferably slope of 30 cm.
  • the closely spaced, touching steel rods 3 have conventional circumferential ribs.
  • From Stranded tension members 3 have a helically ribbed outer surface. Both the steel rods and the strands ensure that the injected, hardening building material passes through the outer ring of the tension members into the center.
  • the central tension member 3 'or the central tension members 3' are provided with a spacer in the form of a helix 6 through the wound plastic cord. This ensures that in addition to the outer tension members 3 and the tension members located in the center 3 'are completely closed by the hardening building material, at least with a thickness of about 1 mm. In addition to the required holding force, this also ensures the necessary corrosion protection.
  • two inner tension members 3 ' are wrapped by a helix 6 made of plastic wire.
  • the remaining outer, ring-shaped tension members 3 surround the core formed by the two tension members 3 'close together.
  • an inner tension member 3 'with two outer tension members 3 is connected by the coil 6 to a unit. This also ensures that the hardenable building material can enter the bundle interior.
  • two tension members of the outer ring are combined by a coil 6, whereby the access of the hardenable building material to the second central tension member 3 'is made possible.
  • the remaining tension members 3 are loosely arranged to save space.
  • tension members are conceivable, in which one or more tension members are provided with a helix.
  • Injection pipes for feeding the hardenable building material are assigned to the bundle of tension members in a manner not shown, like a tension member.
  • Such a channel formed by an injection pipe or hose leads to the anchor end facing the bottom of the borehole.

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  • 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)
  • Catalysts (AREA)
  • Reinforcement Elements For Buildings (AREA)

Claims (7)

1. Tirant d'ancrage,
   comportant plusieurs éléments de traction (3,3′) constitués de tiges ou de torons qui sont réunis en faisceaux en étant serrés les uns contre les autres, un élément de traction (3′) étant disposé à l'intérieur et entouré en couronne par des éléments de traction extérieurs (3),
   et comportant des moyens d'espacement qui maintiennent les éléments de traction (3,3′), sur la longueur d'ancrage, à une distance mutuelle suffisamment faible pour permettre encore le passage, même transversalement à l'axe longitudinal du tirant d'ancrage, du matériau de construction durcissant injecté,
   caractérisé en ce
   qu'une hélice (6) est enroulée, comme moyen d'espacement, seulement sur l'unique élément de traction intérieur (3′).
2. Tirant d'ancrage,
   comportant plusieurs éléments de traction (3,3′) constitués de tiges ou de torons qui sont réunis en faisceaux en étant serrés les uns contre les autres, plusieurs éléments de traction (3′) étant disposés à l'intérieur et entourés en couronne par des éléments de traction extérieurs (3),
   et comportant des moyens d'espacement qui maintiennent les éléments de traction (3,3′), sur la longueur d'ancrage, à une distance mutuelle suffisamment faible pour permettre encore le passage, même transversalement à l'axe longitudinal du tirant d'ancrage, du matériau de construction durcissant injecté,
   caractérisé en ce
   qu'une hélice commune (6) est enroulée, comme moyen d'espacement, sur plusieurs éléments de traction intérieurs contigus (3′).
3. Tirant d'ancrage,
   comportant plusieurs éléments de traction (3,3′) constitués de tiges ou de torons qui sont réunis en faisceaux en étant serrés les uns contre les autres, au moins un élément de traction (3′) étant disposé à l'intérieur et entouré en couronne par des éléments de traction extérieurs (3),
   et comportant des moyens d'espacement qui maintiennent les éléments de traction, sur la longueur d'ancrage, à une distance mutuelle suffisamment faible pour permettre encore le passage, même transversalement à l'axe longitudinal du tirant d'ancrage, du matériau de construction durcissant injecté,
   caractérisé en ce
   qu'au moins un élément de traction intérieur (3′) est réuni en une unité conjointement avec au moins un élément de traction extérieur (3) grâce à urne hélice commune (6) servant de moyen d'espacement.
4. Tirant d'ancrage selon la revendication 3, caractérisé en ce qu'une hélice supplémentaire (6′) est en outre enroulée sur des éléments de traction extérieurs (3).
5. Tirant d'ancrage selon l'une des revendications 1 à 4, caractérisé en ce que l'hélice (6,6′) est formée par un cordon de matière plastique.
6. Tirant d'ancrage selon l'une des revendications 1 à 5, caractérisé en ce qu'un élément de traction (3,3′) est remplacé par un canal longitudinal extérieur ou intérieur pour l'injection du matériau de construction durcissant.
7. Tirant d'ancrage selon la revendication 6, caractérisé en ce que le canal est formé par un tuyau flexible d'injection, qui est conduit jusqu'à l'extrémité du tirant d'ancrage qui est tournée vers le fond du trou foré.
EP19890106428 1988-04-20 1989-04-11 Tirant d'ancrage de sol tensionable Expired - Lifetime EP0338388B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106428T ATE75510T1 (de) 1988-04-20 1989-04-11 Spannbarer erdanker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3813283 1988-04-20
DE3813283A DE3813283A1 (de) 1988-04-20 1988-04-20 Spannbarer erdanker

Publications (3)

Publication Number Publication Date
EP0338388A2 EP0338388A2 (fr) 1989-10-25
EP0338388A3 EP0338388A3 (en) 1990-05-30
EP0338388B1 true EP0338388B1 (fr) 1992-04-29

Family

ID=6352472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890106428 Expired - Lifetime EP0338388B1 (fr) 1988-04-20 1989-04-11 Tirant d'ancrage de sol tensionable

Country Status (3)

Country Link
EP (1) EP0338388B1 (fr)
AT (1) ATE75510T1 (fr)
DE (2) DE3813283A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1813627C3 (de) * 1968-12-10 1976-09-16 Gerhard Dipl Ing Kuelessa Warmgewalzter betonbewehrungs- oder ankerstab
DE2041526C3 (de) * 1970-08-21 1980-06-04 Dyckerhoff & Widmann Ag, 8000 Muenchen Zugglied für einen Verpreßanker
DE2430170C3 (de) * 1974-06-24 1979-10-11 Philipp Holzmann Ag, 6000 Frankfurt Spannglied aus hxxochzugfestem Stahl für Spannbetonbauteile oder -bauwerke
DE3234246C2 (de) * 1982-09-15 1984-11-29 Ulrich Dr.Ing. e.h. Dr.Ing. 8000 München Finsterwalder Kabel, insbesondere für Schrägkabelbrücken aus Spannbeton
DE3418318A1 (de) * 1984-05-17 1985-11-21 Friedrich J. Ing. Rottenmann Bodner Bewehrungselement fuer spannbeton-konstruktionsteile
DE3431211A1 (de) * 1984-08-24 1986-03-06 Stump Bohr Gmbh, 8045 Ismaning Mehrstahlanker
DE3529001A1 (de) * 1985-08-13 1987-02-26 Dyckerhoff & Widmann Ag Verfahren zum einbau einer wendel aus stahldraht in einen rohrfoermigen hohlraum, wie z.b. einen spannkanal

Also Published As

Publication number Publication date
EP0338388A3 (en) 1990-05-30
DE3813283A1 (de) 1989-11-09
ATE75510T1 (de) 1992-05-15
EP0338388A2 (fr) 1989-10-25
DE58901261D1 (de) 1992-06-04

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