EP1090207B1 - 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

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Publication number
EP1090207B1
EP1090207B1 EP99922153A EP99922153A EP1090207B1 EP 1090207 B1 EP1090207 B1 EP 1090207B1 EP 99922153 A EP99922153 A EP 99922153A EP 99922153 A EP99922153 A EP 99922153A EP 1090207 B1 EP1090207 B1 EP 1090207B1
Authority
EP
European Patent Office
Prior art keywords
tie rod
anchor rod
anchor
thread
fibres
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
EP99922153A
Other languages
German (de)
English (en)
Other versions
EP1090207A1 (fr
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
Original Assignee
Sika Schweiz 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 Sika Schweiz AG filed Critical Sika Schweiz AG
Publication of EP1090207A1 publication Critical patent/EP1090207A1/fr
Application granted granted Critical
Publication of EP1090207B1 publication Critical patent/EP1090207B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

  • the invention relates to a tie rod for construction purposes, in particular to secure rock walls, with one out of one Polymer composite existing, at its head end End a threaded anchor rod for receiving a screwable onto the thread of the anchor rod, preferably pressure nut that can be supported against a pressure plate.
  • a threaded rod made of fiber material is previously known from EP 0 191 337 A.
  • Tie rods of this type are used primarily for permanent Securing unstable mountain areas, for system anchoring in order to increase the construction resistance and for security measures used in underground and special civil engineering.
  • the anchor rods are in holes of the rock walls to be secured, with an anchor mortar or anchor resin glued and with the head side pushed-on pressure plate and one screwed onto the thread Pressure nut clamped.
  • the tie rod consists mainly of steel or made of glass fibers, which in a special process with Polyester resin or epoxy resin can be glued.
  • 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, whereby a undesirable material weakening occurs.
  • the invention is based on the object a tie rod of the type specified at the beginning and a To develop processes for its production, with which the Manufacture of the anchor rod is simplified and yet a higher tractive force can be achieved.
  • the idea of the solution according to the invention lies above all based on the fact that with continuous reinforcing fibers achieved an increased tensile force in the area of the thread can be.
  • the polymer composite a variety extending over the entire length of the anchor rod, into a binder matrix made of thermoplastic Plastic embedded and uninterrupted in the thread area Has reinforcing fibers.
  • the glass transition point is of the thermoplastic used at least 100 ° C and the flow transition point at least 160 ° C.
  • the reinforcing fibers contain carbon fibers or are designed as such.
  • Advantageously hybrid fibers mainly consisting of carbon, Glass and / or aramid fibers used in their Overall, a high shear strength corresponding to the steel exhibit.
  • the reinforcing fibers form a braided hose soaked with the binder, in the suitably purely axially aligned carbon fibers or carbon fiber strands are arranged in the a large number of glass fibers or glass fiber strands predominantly can be braided in the circumferential direction.
  • thermoplastic is expediently used as the binder matrix Plastic from the group polyolefins, vinyl polymers, Polyamides, polyesters, polyacetals, polycarbonates, thermoplastic polyurethanes and ionomers provided. Around cement-free anchoring in the rock or structural borehole It may be an advantage if the thermoplastic binder under the influence of Heat can be plasticized and swellable at the same time.
  • the tie rod expediently a variety of endless reinforcing fibers in the coextrusion process or pultrusion process in the Binder matrix embedded from thermoplastic material.
  • the thread can be cut under the influence of pressure and preferably heat without cutting and without separating the reinforcing fibers in the Anchor rod can be molded.
  • Tie rod an initially dry one, made of reinforcing fibers Braided tube formed with liquid thermoplastic Soaked binder and forming the anchor rod be cured.
  • the thread and if necessary a plurality of transverse grooves are appropriate before Hardening the binder in and in the anchor rod Braided hose molded in. Basically, however, it is also possible, the thread and possibly a plurality Cross grooves after the binder has hardened The effect of pressure and heat in the anchor rod.
  • Anchor rod inserted into the hole above its central one Cavity locally above its flow transformation point Binder heated and cohesive and / or positively connected to the bore wall become.
  • the anchor rod can also swell of the binder are heated locally.
  • the anchor rod is preferably a heating lance inserted into the bore of the anchor rod and electrically heated.
  • the tie rod shown in the drawing is an adhesive anchor educated. It is particularly suitable as a rock anchor for the permanent and temporary backup of unstable Mountain zones and to increase stability of the mountains when building tunnels and tunnels. It includes an anchor rod 10, in which a head-side thread 12 is molded, a pressure plate 14 and one on the Thread 12 of the anchor rod screw-on pressure nut 16.
  • 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 predominantly reinforcing fibers consisting of carbon fibers (hybrids) 18, which are made into a binder matrix 20 thermoplastic are embedded.
  • the endless ones Reinforcing fibers 18 are useful in the coextrusion process or in the pultrusion process into the binder matrix 20 embedded and after curing in the desired anchor rod length cut to length.
  • the thermoplastic Binder matrix 20 ensures that the anchor rod at Temperature is sufficiently stiff and by heating to a temperature above the glass transition point is plastically deformable.
  • the thread 12 can accordingly under the influence of pressure and if necessary Heat without breaking the reinforcing fibers 18 in the prefabricated anchor rod 10 are introduced. Thereby there is no impermissible weakening of material in the area of the thread on. Further can be spaced along the entire length mutually arranged transverse grooves 26 in the anchor rod 10 are pressed in, which provides better anchoring ensure in the injected material.
  • the invention according to the features of claim 1 refers to a tie rod for building purposes, in particular a rock anchor designed as an adhesive anchor.
  • the Tie rod has a polymer composite a sawtooth at its head end Thread 12 having anchor rod 10 for receiving a pressure nut 16 that can be supported against a pressure plate 14, which is screwed onto the thread 12 of the anchor rod.
  • a particularly efficient producibility without loss The polymer composite demonstrates tensile strength the anchor rod 10 a variety of itself the entire length of the anchor rod extending into one Binder matrix 20 made of thermoplastic embedded and continuous reinforcement fibers in the thread area 18 on.
  • the thread 12 can act of pressure and possibly of heat without cutting the anchor rod 10 are molded.

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)
  • Dowels (AREA)
  • Catalysts (AREA)
  • Ropes Or Cables (AREA)

Claims (15)

  1. Tirant d'ancrage pour des besoins de construction, en particulier ancre de roche, avec une barre d'ancrage composée d'un composite polymère et présentant un filetage (12) sur son extrémité du côté de la tête pour la réception d'un écrou de serrage pouvant être vissé sur le filetage de la barre d'ancrage et pouvant être de préférence en appui sur une plaque de serrage (14), moyennant quoi le composite polymère présente une multitude de fibres de renforcement (18) s'étendant sur toute la longueur de la barre d'ancrage (10) et incorporées dans une matrice de liant (20) en matière synthétique thermoplastique et ininterrompues à l'extrémité du côté de la tête du tirant d'ancrage dans la zone du filetage, caractérisé en ce que la température de vitrification de la matière synthétique thermoplastique est d'au moins 100°C, et le point de transformation pour la liquéfaction, d'au moins 160°C.
  2. Tirant d'ancrage selon la revendication 1, caractérisé en ce que le filetage (12) est de préférence moulé dans la barre d'ancrage (10) sans enlèvement de copeaux sous l'effet de la pression et de la chaleur.
  3. Tirant d'ancrage selon la revendication 1 ou 2, caractérisé en ce que les fibres de renforcement (18) contiennent des fibres de carbone, ou sont réalisées en tant que telles.
  4. Tirant d'ancrage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les fibres de renforcement contiennent des hybrides se composant de fibres de carbone, fibres de verre et/ou fibres d'aramide.
  5. Tirant d'ancrage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les fibres de renforcement (18) forment une gaine tressée imbibée avec la matière synthétique thermoplastique de la matrice de liant (20).
  6. Tirant d'ancrage selon la revendication 5, caractérisé en ce que des fibres de carbone ou des faisceaux de fibres de carbone orientés uniquement axialement, sont aménagés dans la gaine tressée.
  7. Tirant d'ancrage selon la revendication 5 ou 6, caractérisé en ce qu'une multitude de fibres de verre ou de faisceaux de fibres de verre sont tressés dans la gaine tressée, essentiellement en direction périphérique.
  8. Tirant d'ancrage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la barre d'ancrage (10) présente des sillons transversaux (26) aménagés à distance axiale les uns des autres.
  9. Tirant d'ancrage selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'une matière synthétique thermoplastique du groupe des polyoléfines, polymères de vinyle, polyamides, polyesters, polyacétals, polycarbonates, polyuréthanes et ionomères, est prévue en guise de matrice de liant (20).
  10. Tirant d'ancrage selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la matrice de liant (20) thermoplastique présente une capacité de gonflement sous l'effet de la chaleur.
  11. Tirant d'ancrage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la barre d'ancrage (10) est réalisée sous la forme d'une barre creuse, de préférence avec un espace creux (22) central d'un seul tenant.
  12. Utilisation du tirant d'ancrage selon l'une quelconque des revendications 1 à 11 pour l'ancrage dans une forure d'un rocher ou d'une construction, où la barre d'ancrage (10) placée dans la forure est échauffée localement via un espace creux (22) central au-delà du point de transformation pour la liquéfaction de la matière synthétique thermoplastique de sa matrice de liant (20), et est reliée par conjugaison de matériaux et/ou conjugaison de formes avec la paroi de forage.
  13. Utilisation selon la revendication 12, caractérisée en ce que la barre d'ancrage (10) est localement échauffée par le gonflement de sa matrice de liant.
  14. Utilisation selon la revendication 12 ou 13, caractérisée en ce que pour l'échauffement local de la barre d'ancrage (10), une lance de chauffage est introduite dans l'espace creux (22) de la barre d'ancrage (10), et y est de préférence échauffée électriquement.
  15. Utilisation du tirant d'ancrage selon l'une quelconque des revendications 1 à 11 pour l'ancrage dans une forure d'un rocher ou d'une construction, caractérisée en ce que la barre d'ancrage (10) insérée dans la forure du rocher ou de la construction est alimentée en ciment liquide ou matière synthétique via un espace creux (22) central traversant la barre d'ancrage dans le sens longitudinal, de manière à ce que celui-ci ou celle-ci ressorte par la pointe de la barre d'ancrage et remplisse au moins partiellement l'espace intermédiaire entre la barre d'ancrage et la paroi de forage, pour y durcir.
EP99922153A 1998-06-26 1999-05-03 Tirant d'ancrage, en particulier pour la fixation de parois de rocher, et procede de fabrication dudit tirant Expired - Lifetime EP1090207B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19828371A DE19828371A1 (de) 1998-06-26 1998-06-26 Zuganker insbesondere zur Sicherung von Felswänden sowie Verfahren zur Herstellung eines derartigen Zugankers
DE19828371 1998-06-26
PCT/EP1999/002979 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

Publications (2)

Publication Number Publication Date
EP1090207A1 EP1090207A1 (fr) 2001-04-11
EP1090207B1 true EP1090207B1 (fr) 2003-10-15

Family

ID=7872022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99922153A Expired - Lifetime 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

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)

Families Citing this family (5)

* 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
DE102009026478A1 (de) * 2009-05-26 2010-12-02 Hilti Aktiengesellschaft Befestigungselement mit einem Grundkörper für den Einsatz im Berg- und Tunnelbau
DE102010024352A1 (de) 2010-06-18 2011-12-22 Firep Rebar Technology Gmbh Verbesserter Zuganker aus faserverstärktem Kunststoff
DE102013002734B4 (de) 2013-02-19 2015-03-05 Firep Rebar Technology Gmbh Ankerkopf für einen Zuganker und Ankermutter für einen Ankerkopf eines Zugankers
EP3000963B1 (fr) * 2014-09-25 2019-06-26 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

Family Cites Families (10)

* 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
DE3145153C2 (de) * 1981-11-13 1984-10-04 Röchling Haren KG, 4472 Haren Verfahren zur Herstellung eines stranggezogenen Verankerungsstabes aus aushärtbarem Kunstharz
CH664803A5 (de) * 1982-05-14 1988-03-31 Weidmann H Ag Anordnung zur uebertragung einer kraft und verfahren zur herstellung eines ankerstabes.
DE3504829A1 (de) * 1985-02-13 1986-08-14 Röchling Haren KG, 4472 Haren Gewindeelement
WO1990008877A1 (fr) * 1989-02-06 1990-08-09 The Broken Hill Proprietary Company Limited Boulon d'ancrage en materiau polymere oriente
DE4209265A1 (de) * 1991-12-21 1993-06-24 Dyckerhoff & Widmann Ag Vorrichtung zur verankerung eines stabfoermigen zugglieds aus faserverbundwerkstoff
GB9226079D0 (en) * 1992-12-15 1993-02-10 Ani Arnall Uk Limited Reinforcement tendon
DE4302409C2 (de) * 1993-01-28 1996-05-30 Ferriere Belloli & Co Zug- oder Felsanker mit angeformtem Gewinde sowie Verfahren zur Herstellung derselben
DE29501694U1 (de) * 1995-02-03 1995-04-20 Ortwin M. Zeissig GmbH & Co. KG, 45481 Mülheim Gebirgsanker aus Kunststoff

Also Published As

Publication number Publication date
EP1090207A1 (fr) 2001-04-11
ES2211084T3 (es) 2004-07-01
WO2000000718A1 (fr) 2000-01-06
ATE252197T1 (de) 2003-11-15
AU3929999A (en) 2000-01-17
DE59907379D1 (de) 2003-11-20
DE19828371A1 (de) 1999-12-30

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