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WO2000000718A1 - Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant - Google Patents

Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant Download PDF

Info

Publication number
WO2000000718A1
WO2000000718A1 PCT/EP1999/002979 EP9902979W WO0000718A1 WO 2000000718 A1 WO2000000718 A1 WO 2000000718A1 EP 9902979 W EP9902979 W EP 9902979W WO 0000718 A1 WO0000718 A1 WO 0000718A1
Authority
WO
WIPO (PCT)
Prior art keywords
anchor rod
tie rod
thread
anchor
fibers
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.)
Ceased
Application number
PCT/EP1999/002979
Other languages
German (de)
English (en)
Inventor
Alexander Bleibler
Ernesto Schümperli
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.)
Sika Schweiz AG
Sika AG
Original Assignee
Sika AG
Sika AG Vorm Kaspar Winkler and Co
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 Sika AG, Sika AG Vorm Kaspar Winkler and Co filed Critical Sika AG
Priority to AU39299/99A priority Critical patent/AU3929999A/en
Priority to DE59907379T priority patent/DE59907379D1/de
Priority to AT99922153T priority patent/ATE252197T1/de
Priority to EP99922153A priority patent/EP1090207B1/fr
Publication of WO2000000718A1 publication Critical patent/WO2000000718A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material

Definitions

  • Tie rods in particular for securing rock walls, and methods for producing such a tie rod
  • the invention relates to a tie rod for construction purposes, in particular for securing rock walls, with an anchor rod consisting of a polymer composite and having a thread at its head end for receiving a pressure nut which can be screwed onto the thread of the anchor rod and is preferably supportable against a pressure plate.
  • Tension anchors of this type are mainly used for the permanent securing of unstable mountain zones, for system anchoring in order to increase the construction resistance as well as for security measures in underground and special civil engineering.
  • the anchor rods are used in the bores of the rock walls to be secured, glued with an anchor mortar or anchor resin and braced with the pressure plate pushed on the head side and a pressure nut screwed onto the thread.
  • the anchor rod mainly consists of steel or glass fibers, which are glued in a special process with polyester resin or epoxy resin. The sawtooth-like thread is cut into the anchor rod. It is perceived as a disadvantage that the glass fibers are cut at the interfaces, which causes an undesirable weakening of the material. Proceeding from this, the object of the invention is to develop a tie rod of the type specified at the outset and a method for its manufacture, which simplifies the manufacture of the anchor rod and yet a higher tensile force can be achieved.
  • the solution according to the invention is primarily based on the idea that with continuous reinforcing fibers an increased tensile force can also be achieved in the area of the thread.
  • the polymer composite has a large number of reinforcing fibers which extend over the entire length of the anchor rod and are embedded in a binder matrix made of thermoplastic material and are uninterrupted in the thread area.
  • the thermoplastic it is possible to form the thread without cutting into the anchor rod, preferably under the action of pressure and heat.
  • the glass transition point of the thermoplastic used should suitably be above 100 ° C, while the flow transition area should begin above 160 ° C.
  • the reinforcing fibers contain carbon fibers or are designed as such.
  • the hybrid fibers used for this purpose mainly consisting of carbon, glass and / or aramid fibers, which as a whole have a high shear strength corresponding to the steel.
  • the reinforcing fibers form a braided hose impregnated with the binder, in which purely axially aligned carbon fibers or carbon fiber strands are expediently arranged, into which a large number of glass fibers or glass fiber strands can be predominantly braided in the circumferential direction.
  • thermoplastic from the group of polyolefins, vinyl polymers, polyamides, polyesters, polyacetals, polycarbonates, thermoplastic polyurethanes and ionomers is advantageously provided as the binder matrix.
  • the thermoplastic binder can be plasticized under the action of heat and at the same time swellable.
  • a multiplicity of endless reinforcing fibers are expediently embedded in the binder matrix made of thermoplastic material in the coextrusion process or pultrusion process.
  • the thread can be subjected to pressure and preferably heat can be molded into the anchor rod without cutting and without separating the reinforcing fibers.
  • an initially dry braided tube formed from reinforcing fibers can be impregnated with liquid thermoplastic binder and cured to form the tie rod in order to produce the tie rod according to the invention.
  • the thread and, if appropriate, a plurality of transverse grooves are expediently formed in the anchor rod and in the braided hose before the binder has hardened.
  • the anchor rod inserted into the borehole can be heated locally via its central cavity beyond the flow transformation point of its binder and can be connected to the borehole wall in a cohesive and / or form-fitting manner. If a swellable binder is used, the anchor rod can additionally be heated locally with swelling of the binder. For local heating of the anchor rod, a heating lance is preferably inserted into the bore of the anchor rod and heated electrically.
  • Figure 1 is a side view of a tie rod, consisting of anchor rod, pressure plate and pressure nut in an exploded view.
  • Fig. 2 shows an enlarged section of the anchor rod in a longitudinal section.
  • the tie rod shown in the drawing is designed as an adhesive anchor. It is particularly suitable as a rock anchor for the permanent and temporary securing of unstable mountain zones and for increasing the stability of the mountains when building tunnels and tunnels. It comprises an anchor rod 10, in which a head-side thread 12 is formed, a pressure plate 14 and a pressure nut 16 which can be screwed onto the thread 12 of the anchor rod.
  • the anchor rod has a central cavity 22 and is protected at its tip by a removable cap 24. It consists of a polymer composite with reinforcing fibers 18 consisting predominantly of carbon fibers (hybrids), which are embedded in a binder matrix 20 made of thermoplastic material.
  • the endless reinforcing fibers 18 are expediently embedded in the binder matrix 20 in the coextrusion process or in the pultrusion process and cut to the desired anchor length after curing.
  • the thermoplastic binder matrix 20 ensures that the anchor rod
  • the thread 12 can accordingly be introduced into the prefabricated anchor rod 10 under the action of pressure and, if appropriate, heat without breaking the reinforcing fibers 18. As a result, there is no inadmissible weakening of material in the area of the thread. Furthermore, transverse grooves 26 spaced apart from one another can be pressed into the anchor rod 10 over the entire length and ensure better anchoring in the injected material.
  • the invention relates to a tie rod for building purposes, in particular a rock anchor designed as an adhesive anchor.
  • the tie rod has an anchor rod 10 consisting of a polymer composite and having a sawtooth-like thread 12 at its head end for receiving a pressure nut 16 which can be supported against a pressure plate 14 and which is screwed onto the thread 12 of the anchor rod.
  • the polymer composite of the anchor rod 10 has a large number of reinforcing fibers 18 which extend over the entire length of the anchor rod and are embedded in a binder matrix 20 made of thermoplastic plastic and are uninterrupted in the thread region.
  • the thread 12 can be formed into the anchor rod 10 without cutting under the action of pressure and possibly heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Catalysts (AREA)
  • Dowels (AREA)
  • Ropes Or Cables (AREA)

Abstract

Tirant d'ancrage pour la construction, en particulier tirant de roche à la résine. Ledit tirant comporte une tige d'ancrage (10) constituée d'un composite polymère et possédant au niveau de sa tête un filetage en dents de scie (12), destinée à recevoir un écrou de pression (16) pouvant être appuyé contre une plaque (14) de pression, ledit écrou étant vissé sur le filetage (12) de la tige d'ancrage. Pour garantir une fabrication particulièrement efficace sans perte de résistance à la rupture par traction, le composite polymère de la tige d'ancrage (10) comporte une pluralité de fibres de renforcement (18) qui s'étendent sur toute la longueur de la tige d'ancrage, sont intégrées dans une matrice de liant (20) constituée d'une matière synthétique thermoplastique et ne sont pas interrompues dans la zone du filetage. Ledit filetage (12) peut être formé sans copeaux dans la tige d'ancrage (10) à l'aide de la pression et de la chaleur.
PCT/EP1999/002979 1998-06-26 1999-05-03 Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant Ceased WO2000000718A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU39299/99A AU3929999A (en) 1998-06-26 1999-05-03 Tie rod especially for securing rock walls, and a method for producing such a tie rod
DE59907379T DE59907379D1 (de) 1998-06-26 1999-05-03 Zuganker insbesondere zur sicherung von felswänden sowie verfahren zur herstellung eines derartigen zugankers
AT99922153T ATE252197T1 (de) 1998-06-26 1999-05-03 Zuganker insbesondere zur sicherung von felswänden sowie verfahren zur herstellung eines derartigen zugankers
EP99922153A EP1090207B1 (fr) 1998-06-26 1999-05-03 Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828371.7 1998-06-26
DE19828371A DE19828371A1 (de) 1998-06-26 1998-06-26 Zuganker insbesondere zur Sicherung von Felswänden sowie Verfahren zur Herstellung eines derartigen Zugankers

Publications (1)

Publication Number Publication Date
WO2000000718A1 true WO2000000718A1 (fr) 2000-01-06

Family

ID=7872022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/002979 Ceased WO2000000718A1 (fr) 1998-06-26 1999-05-03 Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant

Country Status (6)

Country Link
EP (1) EP1090207B1 (fr)
AT (1) ATE252197T1 (fr)
AU (1) AU3929999A (fr)
DE (2) DE19828371A1 (fr)
ES (1) ES2211084T3 (fr)
WO (1) WO2000000718A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2256292A3 (fr) * 2009-05-26 2015-05-20 HILTI Aktiengesellschaft Elément de fixation doté d'un corps de base pour l'utilisation dans la construction en montagne et de tunnels
EP3000963A1 (fr) * 2014-09-25 2016-03-30 Cayeli Bakir Isletmeleri A.S. Ensemble de support de mine pour l'ancrage dans un trou de forage sous la forme d'un boulon de roche amélioré
US9371850B2 (en) 2013-02-19 2016-06-21 Firep Rebar Technology Gmbh Anchor head and anchor nut for a tension anchor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025248A1 (de) * 2006-05-29 2007-12-06 Beltec Industrietechnik Gmbh Faserverstärkter Kunststoff-Bohranker
DE102010024352A1 (de) 2010-06-18 2011-12-22 Firep Rebar Technology Gmbh Verbesserter Zuganker aus faserverstärktem Kunststoff

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296060A (en) * 1979-12-07 1981-10-20 Ppg Industries, Inc. Method of producing a pultruded, fiber reinforced rod
US4307979A (en) * 1978-12-14 1981-12-29 Ppg Industries, Inc. Mine roof bolt and end cap
DE3145153A1 (de) * 1981-11-13 1983-06-30 Röchling Haren KG, 4472 Haren Stranggezogner verankerungsstab aus aushaertbarem kunstharz
US4538940A (en) * 1982-05-14 1985-09-03 H. Weidmann Ag. Arrangement for force transfer between longitudinally stressed members
EP0191337A2 (fr) * 1985-02-13 1986-08-20 Röchling Haren KG Elément fileté
WO1990008877A1 (fr) * 1989-02-06 1990-08-09 The Broken Hill Proprietary Company Limited Boulon d'ancrage en materiau polymere oriente
EP0548832A1 (fr) * 1991-12-21 1993-06-30 Dyckerhoff & Widmann Aktiengesellschaft Dispositif d'ancrage pour la barre de tension d'une ancre en laminé de fibres
DE4342529A1 (de) * 1992-12-15 1994-06-16 Ani Arnall Uk Ltd Armierungsspannglied
EP0612607A1 (fr) * 1993-01-28 1994-08-31 FERRIERE BELLOLI & Co. Elément de traction avec profil spécifique et procédé pour sa fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501694U1 (de) * 1995-02-03 1995-04-20 Ortwin M. Zeissig GmbH & Co. KG, 45481 Mülheim Gebirgsanker aus Kunststoff

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307979A (en) * 1978-12-14 1981-12-29 Ppg Industries, Inc. Mine roof bolt and end cap
US4296060A (en) * 1979-12-07 1981-10-20 Ppg Industries, Inc. Method of producing a pultruded, fiber reinforced rod
DE3145153A1 (de) * 1981-11-13 1983-06-30 Röchling Haren KG, 4472 Haren Stranggezogner verankerungsstab aus aushaertbarem kunstharz
US4538940A (en) * 1982-05-14 1985-09-03 H. Weidmann Ag. Arrangement for force transfer between longitudinally stressed members
EP0191337A2 (fr) * 1985-02-13 1986-08-20 Röchling Haren KG Elément fileté
WO1990008877A1 (fr) * 1989-02-06 1990-08-09 The Broken Hill Proprietary Company Limited Boulon d'ancrage en materiau polymere oriente
EP0548832A1 (fr) * 1991-12-21 1993-06-30 Dyckerhoff & Widmann Aktiengesellschaft Dispositif d'ancrage pour la barre de tension d'une ancre en laminé de fibres
DE4342529A1 (de) * 1992-12-15 1994-06-16 Ani Arnall Uk Ltd Armierungsspannglied
EP0612607A1 (fr) * 1993-01-28 1994-08-31 FERRIERE BELLOLI & Co. Elément de traction avec profil spécifique et procédé pour sa fabrication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2256292A3 (fr) * 2009-05-26 2015-05-20 HILTI Aktiengesellschaft Elément de fixation doté d'un corps de base pour l'utilisation dans la construction en montagne et de tunnels
US9371850B2 (en) 2013-02-19 2016-06-21 Firep Rebar Technology Gmbh Anchor head and anchor nut for a tension anchor
EP3000963A1 (fr) * 2014-09-25 2016-03-30 Cayeli Bakir Isletmeleri A.S. Ensemble de support de mine pour l'ancrage dans un trou de forage sous la forme d'un boulon de roche amélioré

Also Published As

Publication number Publication date
DE19828371A1 (de) 1999-12-30
EP1090207A1 (fr) 2001-04-11
EP1090207B1 (fr) 2003-10-15
ES2211084T3 (es) 2004-07-01
ATE252197T1 (de) 2003-11-15
DE59907379D1 (de) 2003-11-20
AU3929999A (en) 2000-01-17

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