EP0220161A1 - Dispositif d'ancrage, notamment dispositif d'ancrage à expansion non restreinte - Google Patents

Dispositif d'ancrage, notamment dispositif d'ancrage à expansion non restreinte Download PDF

Info

Publication number
EP0220161A1
EP0220161A1 EP86890222A EP86890222A EP0220161A1 EP 0220161 A1 EP0220161 A1 EP 0220161A1 EP 86890222 A EP86890222 A EP 86890222A EP 86890222 A EP86890222 A EP 86890222A EP 0220161 A1 EP0220161 A1 EP 0220161A1
Authority
EP
European Patent Office
Prior art keywords
tube
anchor
free
cladding tube
tendon
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
EP86890222A
Other languages
German (de)
English (en)
Other versions
EP0220161B1 (fr
Inventor
Hermann Dipl.-Ing. Thal
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.)
Vorspann Technik GmbH
Original Assignee
Vorspann Technik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27147227&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0220161(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from AT0248185A external-priority patent/AT387056B/de
Priority claimed from AT0249985A external-priority patent/AT390461B/de
Application filed by Vorspann Technik GmbH filed Critical Vorspann Technik GmbH
Publication of EP0220161A1 publication Critical patent/EP0220161A1/fr
Application granted granted Critical
Publication of EP0220161B1 publication Critical patent/EP0220161B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • E02D5/80—Ground anchors
    • E02D5/808—Ground anchors anchored by using exclusively a bonding material
    • 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
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
    • 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
    • E21D21/006—Anchoring-bolts made of cables or wires
    • 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
    • E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid

Definitions

  • the invention relates to an anchor, in particular a free-play anchor, in which at least one bundle of strands or wires runs in a cladding tube.
  • blocked anchors are those in which the space between the steel tension members and the surrounding cladding tube is pressed out and the steel tension members are firmly connected to the cladding tube after the cement suspension has hardened.
  • Such anchors can no longer expand unhindered due to the friction arising from the earth pressure on the cladding tube. It is therefore recommended to use these anchors only for subordinate structures, because after fixing the anchors and pressing with cement suspension, the functionality can no longer be checked, in particular the anchor forces can no longer be measured. The necessary, permanent statement about the safety of the anchored structure is no longer possible with blocked anchors.
  • Free play anchors are those in which the space between the steel tension members and the surrounding cladding tube is filled with permanently plastic masses in the area of the span length.
  • the longitudinal mobility of the steel tension members is retained because the permanently plastic masses create a largely frictionless connection to the cladding tube.
  • the steel tension members can take over deformations and load changes along their entire length. Only petroleum-based greases are used Corrosion protection additives are added.
  • the object of the present invention is to provide an anchor in which the longitudinal mobility of the tendons is ensured without having to accept the aforementioned risk of using the greases. At least the aim of the invention is to reduce this risk to an acceptable level.
  • the cladding tube is guided so as to be longitudinally movable in at least one second tube (sliding tube) in the region of a desired longitudinal mobility of the tendon, preferably in the region of the free span length.
  • the tendons in the form of strands are designated by 1. They are secured by means of wedges 2, e.g. Detachable hat wedges, fixed in an annular anchor body 3, which is supported on an anchor plate 5 via a two-part intermediate piece 4, which can also be designed as a threaded intermediate piece.
  • wedges 2 e.g. Detachable hat wedges
  • the parts of the tendons projecting over the wedges 2 are covered by sleeves 6 and end caps 7.
  • the previously mentioned parts are covered by a pot 8, which is attached to the anchor plate 5 and sealed against it.
  • the anchor plate 5 lies against an anchor wall 9, or the like between this and the ground, soil, rock. 10 a layer of filter concrete can be provided.
  • the tendons 1 are aligned in parallel by means of a deflection ring 11 and extend over the area of their free span length to the anchoring area on the mountain side (FIG. 3).
  • a trumpet 12 extends from the inside of the anchor body 3 and is attached to the anchor body 3 by means of an angle ring 13.
  • This trumpet 12 is provided with an external thread at its inner (thinner) end and a sleeve 14 is screwed onto this thread, which extends somewhat into the interior of the borehole 15.
  • the trumpet 12 and the sleeve 14 can also form a possibly telescopic unit.
  • a protective tube 16 extends from the anchor plate 5 and is attached to the anchor plate 5 by means of a flange 17.
  • the flange 18 of a borehole lining 19 lies between this flange and the anchor wall 9.
  • the tendons 1 are surrounded at a distance by a cladding tube 20 which begins at a short distance from the inner end of the trumpet 12 and extends over the entire free span of the tendons 1.
  • the space enclosed by this cladding tube 20 is, like the interior of the trumpet, with a cement stone, preferably an elastic-stretchable cement stone or the like. Filling material filled out.
  • This cement block or the filler material has the property of not forming any cracks or cracks if the tendons are overstretched beyond the preset prestressing force.
  • This property of the cement stone or the like. is achieved by an additive which gives the cement stone the property of being able to expand to a small extent.
  • plastics are preferably added, which are expediently present in dispersion form in the cement block.
  • an elastic additional material is proposed, which is e.g. a hardenable synthetic resin.
  • the additive material can be contained in the liquid state in amounts of 3 to 10% by weight, preferably 5% by weight.
  • the cladding tube 20 is surrounded over its entire length by a sliding tube 21 which is at a short distance from the cladding tube 20.
  • the opposing surfaces of the two tubes 20, 21 are smooth ".
  • the sliding tube 21 projects both into the protective tube 16 and into the sleeve 14. Between the sliding tube 21 on the one hand and the protective tube 16 and the sleeve 14 on the other hand, sealing rings 22 and 23 attached.
  • annular seal 24 is provided, which extends between the protective tube 21 and the lining 19.
  • a line 26 leads into the annular space 25 located between this seal 24 and the anchor plate 5 (or the flange 17) in order to be able to introduce filler into this annular space.
  • the outflow pipe 28 is provided to control the complete filling of this space; Only when filling material flows out of this tube is the space 25 completely filled.
  • a filling line (not shown) also leads into the annular space between the sleeve 14 and the protective tube 21.
  • the annular space between the cladding tube 20 and the sliding tube 21, which has only a very small thickness remains free or is filled with a permanently plastic mass in order to facilitate a mutual longitudinal movement between these two tubes. The amount of this permanently plastic mass is extremely small due to the very small distance between the tubes 20 and 21.
  • the inner end of the cladding tube 20 is pushed onto the stepped (tapered) end of a tube section 30 which passes through an elastically stretchable sealing bellows 31.
  • the space 32 enclosed by the bellows 31 and the pipe section 30 can be filled via the line 33 leading to the outside in order to bring the bellows into tight contact with the wall of the borehole 15
  • a ring 34 which widens towards the end of the sliding tube 21, serves to fasten one end of the bellows 31; this expanded portion of the ring 34 is connected to the inner end of the sliding tube 21.
  • a corrugated tube 45 extends from the inner end of the tube section 30; but it is also possible to form the corrugated tube 45 and the tube section 30 as a coherent single piece.
  • the other end of the corrugated tube 45 is closed by a cap 36. It is advantageous to design the corrugations of the corrugated tube 45 in accordance with a single or multiple thread round thread; the correspondingly designed cap 36 can in this case be connected to the corrugated tube 45 by simply screwing on or screwing it on.
  • the possible connection between corrugated pipe 45 and pipe section 30 can also be simplified in this way.
  • an end plate 46 is provided, which is penetrated by the tendons 1 and a central filling tube 37 ending near the cap 36.
  • Another cover plate 48 is located in the cladding tube 20 near its inner end; the space between the two cover disks 46 and 48 can also be filled from the outside via a line (not shown).
  • the existing between the corrugated pipe 45 and the borehole 15, up to the bellows 31, the cavity 38 is filled with anchoring material in a conventional manner.
  • the annular space 39 lying between the bellows 31 and the seal 24 can also be filled from the outside via a line (not shown).
  • the lining 19 is cast in together with the pipes 26 and 28 in the manufacture of the concrete anchor plate.
  • the seal 24 consists, for example, of polyurethane foam.
  • a hardening material e.g. Cement mortar, filled.
  • the tendons are advantageously tensioned and wedged first. Only then is the free space between the tendons 1 and the cladding tube filled with a curable material over the entire area of the free span, ie including the trumpet 12. This has the advantage that no tensile load is exerted on the curable material, as long as no tensile forces acting on the tendons due to the tensioning of the tendons act on the tendons.
  • a curable material Cement mortar or an elastic cement mortar is used.
  • the design of the anchoring according to the invention makes it possible that on the one hand the tensioning elements can expand under additional loads or contract when relieved, the somewhat elastic cement block or the other filler material always taking part in these axial movements even in the event of repetition without forming cracks or cracks, and that, on the other hand, the cladding tube, following these axial movements of the tensioning elements, because its interior is filled with the elastic cement block, can move axially relative to the surrounding, permanently held sliding tube. Friction, which could hinder this axial displacement of the cladding tube in the sliding tube, is eliminated by introducing a small amount of lubricant into the space between these tubes. This enables all the advantages of the free-spike anchor to be achieved. But without any environmentally harmful filler, especially viscous oils and fats.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
EP86890222A 1985-08-26 1986-08-04 Dispositif d'ancrage, notamment dispositif d'ancrage à expansion non restreinte Expired - Lifetime EP0220161B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT2481/85 1985-08-26
AT0248185A AT387056B (de) 1985-08-26 1985-08-26 Freispielanker
AT2499/85 1985-08-27
AT0249985A AT390461B (de) 1985-08-27 1985-08-27 Anker, insbesondere freispielanker
AT120186 1986-05-05
AT1201/86 1986-05-05

Publications (2)

Publication Number Publication Date
EP0220161A1 true EP0220161A1 (fr) 1987-04-29
EP0220161B1 EP0220161B1 (fr) 1990-04-25

Family

ID=27147227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890222A Expired - Lifetime EP0220161B1 (fr) 1985-08-26 1986-08-04 Dispositif d'ancrage, notamment dispositif d'ancrage à expansion non restreinte

Country Status (3)

Country Link
EP (1) EP0220161B1 (fr)
AT (1) ATE52290T1 (fr)
DE (1) DE3670660D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9409363U1 (de) * 1994-06-09 1994-08-04 Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim Abgedichtete Ankerdurchführung für Verbauwände
DE4316097A1 (de) * 1993-05-13 1994-11-17 Bauer Spezialtiefbau Verfahren und Vorrichtung zum Setzen eines Injektionsankers
DE9416718U1 (de) * 1994-10-18 1994-12-15 Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim Versenkte, abgedichtete Ankerdurchführung, insbesondere für Schlitzwände
DE29715363U1 (de) * 1997-08-27 1997-11-27 Dyckerhoff & Widmann AG, 81902 München Ankerelement für einen Verpreßanker
EP0995878A3 (fr) * 1998-10-20 2003-10-29 VORSPANN-TECHNIK Ges.m.b.H. & Co. KG Boulon d'ancrage et puits de forage avec ledit boulon posé
EP4176161A1 (fr) * 2020-07-06 2023-05-10 BBR VT International Ltd. Solution d'étanchéité de zone de transition d'ancrages au sol

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3844417C2 (de) * 1988-12-30 1995-02-16 Tgb Technogrundbau Gmbh Verfahren zum Herstellen eines nachspannbaren Verpreßankers mit Dauerkorrosionsschutz sowie dadurch hergestellter Verpreßanker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BUCH VON PROF. DR.-ING. FRITZ LEONHARDT "Spannbeton fur die Praxis", 2. Auflage, 1962 VERLAG VON W. ERNST & SOHN, Berlin Seiten 110-115 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316097A1 (de) * 1993-05-13 1994-11-17 Bauer Spezialtiefbau Verfahren und Vorrichtung zum Setzen eines Injektionsankers
DE9409363U1 (de) * 1994-06-09 1994-08-04 Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim Abgedichtete Ankerdurchführung für Verbauwände
DE9416718U1 (de) * 1994-10-18 1994-12-15 Bilfinger + Berger Bauaktiengesellschaft, 68165 Mannheim Versenkte, abgedichtete Ankerdurchführung, insbesondere für Schlitzwände
DE29715363U1 (de) * 1997-08-27 1997-11-27 Dyckerhoff & Widmann AG, 81902 München Ankerelement für einen Verpreßanker
EP0995878A3 (fr) * 1998-10-20 2003-10-29 VORSPANN-TECHNIK Ges.m.b.H. & Co. KG Boulon d'ancrage et puits de forage avec ledit boulon posé
EP4176161A1 (fr) * 2020-07-06 2023-05-10 BBR VT International Ltd. Solution d'étanchéité de zone de transition d'ancrages au sol
EP4176161B1 (fr) * 2020-07-06 2025-10-01 BBR VT International Ltd. Solution d'étanchéité de zone de transition d'ancrages au sol

Also Published As

Publication number Publication date
EP0220161B1 (fr) 1990-04-25
DE3670660D1 (de) 1990-05-31
ATE52290T1 (de) 1990-05-15

Similar Documents

Publication Publication Date Title
DE2624559C2 (de) Gebirgsanker
DE3734954C2 (fr)
DE3713291C2 (fr)
DE2366584C2 (de) Befestigung des Endes einer flexiblen armierten Leitung an einem steifen Übergangs- oder Kupplungsstück
DE955678C (de) Verfahren und Vorrichtung fuer Bergbefestigung durch Bolzen und zum Befestigen von Bolzen in Bohrloechern, insbesondere im Grubenbetrieb
DE2534341C3 (de) Verpreßanker
CH676617A5 (fr)
DE2914597A1 (de) Verbesserungen bei der herstellung von zugankern
DE2523988A1 (de) Verankerungseinrichtung zum verankern von waenden wie schottwaende, schutzwaende o.dgl.
DE3434620A1 (de) Abstuetzung eines freien zugglieds, vorzugsweise eines schraegseils einer schraegseilbruecke
DE2707238B2 (de) Korrosionsgeschütztes Zugglied für einen vorspannbaren Anker im Festgestein
DE2749068A1 (de) Gebirgsanker
DE19528999C2 (de) Verbindung von Spannbetonelementen und Verfahren hierzu
EP0220161B1 (fr) Dispositif d'ancrage, notamment dispositif d'ancrage à expansion non restreinte
DE2835559A1 (de) Verankerungen
DE29506476U1 (de) Vorrichtung zur Verwendung beim Einführen der einzelnen Zugelemente eines frei gespannten Zugglieds
AT390461B (de) Anker, insbesondere freispielanker
DE3801451A1 (de) Korrosionsgeschuetztes zugglied, vornehmlich spannglied fuer spannbeton ohne verbund
DE3806759C2 (de) Verfahren zum Sanieren eines hohlzylindrischen Baukörpers und Bausatzsystem hierzu
DE3339058C2 (de) Freiliegendes spannbares Zugglied
DE2557978C2 (de) Ausbaubarer Verpreßanker
DE19711003C2 (de) Verankerungsvorrichtung für ein Zugglied, insbesondere für die Anwendung im Spannbetonbau
AT387056B (de) Freispielanker
DE3138610C2 (de) Einrichtung zur haltbaren Befestigung von Gegenständen in Bohrlöchern
DE3840055C2 (de) Fassadendübel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19870818

17Q First examination report despatched

Effective date: 19890109

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19900425

Ref country code: BE

Effective date: 19900425

Ref country code: NL

Effective date: 19900425

REF Corresponds to:

Ref document number: 52290

Country of ref document: AT

Date of ref document: 19900515

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3670660

Country of ref document: DE

Date of ref document: 19900531

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900804

Ref country code: AT

Effective date: 19900804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19900805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19900831

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19900831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19900831

Year of fee payment: 5

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: HOCHTIEF AKTIENGESELLSCHAFT

Effective date: 19910117

26 Opposition filed

Opponent name: DYCKERHOFF & WIDMANN AG

Effective date: 19910121

Opponent name: HOCHTIEF AKTIENGESELLSCHAFT

Effective date: 19910117

26 Opposition filed

Opponent name: POLENSKY & ZOELLNER BAUGESELLSCHAFT MBH,

Effective date: 19910124

Opponent name: DYCKERHOFF & WIDMANN AG

Effective date: 19910121

Opponent name: HOCHTIEF AKTIENGESELLSCHAFT

Effective date: 19910117

GBPC Gb: european patent ceased through non-payment of renewal fee
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910501

26 Opposition filed

Opponent name: POLENSKY & ZOELLNER BAUGESELLSCHAFT MBH,

Effective date: 19910124

Opponent name: HOCHTIEF AKTIENGESELLSCHAFT

Effective date: 19910117

Opponent name: DYCKERHOFF & WIDMANN AG

Effective date: 19910121

Opponent name: STUMP BOHR GMBH

Effective date: 19910212

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19920203

EUG Se: european patent has lapsed

Ref document number: 86890222.2

Effective date: 19920617