EP2085521A1 - Ancrage de terre ou de rocher doté d'une articulation de tirant d'ancrage composée d'un ou plusieurs éléments individuels ayant une formation de tête d'ancrage protégée contre la corrosion - Google Patents

Ancrage de terre ou de rocher doté d'une articulation de tirant d'ancrage composée d'un ou plusieurs éléments individuels ayant une formation de tête d'ancrage protégée contre la corrosion Download PDF

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Publication number
EP2085521A1
EP2085521A1 EP20090000397 EP09000397A EP2085521A1 EP 2085521 A1 EP2085521 A1 EP 2085521A1 EP 20090000397 EP20090000397 EP 20090000397 EP 09000397 A EP09000397 A EP 09000397A EP 2085521 A1 EP2085521 A1 EP 2085521A1
Authority
EP
European Patent Office
Prior art keywords
anchor
cap
closure means
anchor according
anchoring
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
EP20090000397
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German (de)
English (en)
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EP2085521B1 (fr
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.)
Dywidag Systems International GmbH
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Dywidag Systems International 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 Dywidag Systems International GmbH filed Critical Dywidag Systems International GmbH
Publication of EP2085521A1 publication Critical patent/EP2085521A1/fr
Application granted granted Critical
Publication of EP2085521B1 publication Critical patent/EP2085521B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02D5/80—Ground anchors
    • 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
    • E21D21/008—Anchoring or tensioning means
    • 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
    • E02D5/22—Piles
    • E02D5/54—Piles with prefabricated supports or anchoring parts; Anchoring piles
    • 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
    • E02D5/805—Ground anchors with deformable anchoring members
    • 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
    • E21D21/0086—Bearing plates
    • 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
    • E21D21/0093—Accessories

Definitions

  • the invention relates to a Erd- or rock anchor with an Ankerzugglied of one or more individual elements and with a corrosion-protected anchor head training according to the preamble of claim 1.
  • Anchors are always used when it comes to initiate forces in the anchor head in deeper layers of soil.
  • generic anchor on an Ankerzugglied which may be formed for example by a single rod anchor, which has a continuous external thread as a rule.
  • Such anchors are known as rock bolts or pegs, which are either brought along their entire length by introducing an injection mortar in conjunction with the borehole wall and then braced or anchored as so-called free-play anchors only in the area of the borehole bottom and biased at the air-side end.
  • the tightening or pretensioning takes place by means of an anchor nut, which is screwed onto the thread of the bar anchor and is supported against an anchor plate.
  • Soil and rock anchors are used both for temporary and permanent use, the permanent use requires a design suitable for protection against corrosion constructive training.
  • a corrosion protection by coating the exposed parts with a corrosion protection compound, such as grease, achieved.
  • a cap enclosing the anchoring disc and the protruding ends of the steel wire strands is provided, which is filled with a corrosion protection compound and fastened to the anchor plate via an edge flange by means of screws.
  • the invention has the object to improve the structural design of the anchor head, in particular with a view to facilitate the assembly and disassembly.
  • the basic idea of the invention is to arrange the closure means for fastening the cap to the rest of the anchor head in an externally inaccessible area, for example in the protected area inside the cap.
  • This is done according to the invention by means of a connection element which concentrically surrounds the individual elements and is connected to a support element.
  • the connection element provides on its outer circumference first closure means, which cooperate with second closure means on the inner circumference of the cap.
  • the closure means are not impaired by subsequent external measures such as a protective coating or mechanical damage in their function.
  • the corrosion protection within the cap also ensures that the closure means are also protected against corrosion, so that their function is permanently maintained and also a release of the cap after many years is still possible without difficulty.
  • closure means are activated in the course of placing the cap, which can be done very quickly and therefore compared to the attachment by means of screws means a significant reduction in the workload.
  • an anchor according to the invention is characterized by an improved external appearance and entices third parties who are denied the view of the closure means, less to an abusive removal of the cap.
  • a constructive cap training can contribute, which requires the use of special tools for releasing the cap.
  • a recess or a projection with a polygonal cross-section can be arranged centrally on the cover of the screw cap, for example in the form of a regular four- or hexagonal cross-section into or onto which a correspondingly shaped tool engages.
  • the circumference of the screw cap may comprise means that can be brought into frictional engagement with a tool, for example, flat or profiled surfaces, which are suitable for applying a tool.
  • the connecting element consists of an attachable to the individual elements annular disc which is clamped between the anchor nut and anchor plate and occurs with its outer periphery in interaction with the closure means on the inner circumference of the cap.
  • the anchor plate serves as a support element.
  • connection element is formed by a one-piece from the anchor plate cylindrical projection, which brings advantages especially in the assembly of the anchor, since no own parts must be kept and handled.
  • the closure means for fastening the cap to the rest of the anchor head training preferably consist of a thread, in particular a coarse thread. This makes it possible to attach the cap quickly and safely on the anchor head.
  • the cap closes over its entire circumference frictionally and sealingly against the anchor plate.
  • connection element is arranged with the closure means on or on a dome plate.
  • the dome plate serves as a support element.
  • the invention therefore has a very broad field of application.
  • a further embodiment of the invention shows that it is also possible to arrange the closure means on the outer circumference of the cap.
  • the connecting element is formed by a circumferential collar which protrudes monolithically from the upper side of the annular disc, dome plate, anchor plate or anchoring disc and extend on the inner circumference of the complementary closure means.
  • FIG. 1 to 3 show a first embodiment of the invention, wherein the Fig. 1 and 3 also mutatis mutandis for the embodiments of the in the Fig. 4 to 8 Anchor head training shown apply, as far as the structural design allows.
  • rock anchor 1 which is arranged within a borehole 2.
  • the Ankerzugglied the rock anchor 1 consists of a single element in the form of a ribbed steel bar 3, the longitudinal axis of which carries the reference numeral 4.
  • the rock bolt 1 is anchored by means of a screwed onto the steel rod 3 expansion anchor 6 tensile.
  • the air-side end of the rock anchor 1 is formed by the anchor head 7, whose constructive structure on a larger scale in Fig. 2 is shown.
  • An armature plate 8 which covers the opening of the borehole 2 and can have a rectangular or round circumference and is provided with a central bore 9 for the passage of the steel bar 3 can be seen.
  • the anchor plate 8 With its underside, the anchor plate 8 is supported on the base 10, while the top 11 serves as a support for a concentric with the bore 9 arranged annular disc 12.
  • the annular disc 12 is threaded onto the free end of the steel rod 3 and has on its outer circumference closure means in the form of an external thread 13th
  • An anchor nut 14 is screwed onto the thread of the steel bar 3 and thereby clamps the annular disk 12 against the top 11 of the anchor plate 8, so that the Ring disc 12 rotatably between anchor nut 14 and anchor plate 8 is held on the steel bar 3.
  • the rock bolt 1 can be partially or completely surrounded by an injection material, in order to ensure corrosion protection within the borehole 2 in this way.
  • Fig. 3 shows a cap 17 according to the invention, which serves to produce the corrosion protection in the region of the anchor head 7.
  • the cap 17 is formed by a hollow cylinder 18, one end of which is closed by a lid 19. This results in a bell-shaped cavity 20.
  • the opening 21 facing the end of the cap 17 is formed by a threaded portion 22 which is provided with an internal thread 23.
  • the cavity 20 is filled with a corrosion protection compound 24.
  • Fig. 2 shows that such a cap 17 is pushed axially onto the anchor head 7 until the threaded portion 22 rests against the annular disc 12.
  • the projection 37 may also be formed by a correspondingly shaped depression or by correspondingly formed surfaces on the outer circumference of the hollow cylinder 18 of the cap 17.
  • Fig. 4 embodiment of the invention shown largely coincides with that already described.
  • the essential difference consists only in that the closure means are formed by a cylindrical projection 25, the in one piece from the top 11 of the anchor plate 8 emerges.
  • the projection 25 carries at its outer periphery a thread 13 which acts in the course of attachment of the cap 17 with its internal thread 23 as a closure means together.
  • a dome plate 26 interposed between a modified anchor plate 8 'and the anchoring means a dome plate 26 interposed.
  • the dome plate 26 has a crowned underside 27, which is supported relative to the modified anchor plate 8 '.
  • the modifications of the anchor plate 8 ' consist in an enlargement of the central bore 9' and spherical bearing surfaces 28 in the region of the contact joint to the dome plate 26. In this way forms the dome plate 26 together with the anchor plate 8 'a socket joint, the pivoting movements of the dome plate 26 against the Anchor plate 8 'allowed.
  • Fig. 5 shown embodiment of the invention has a dome plate 26 with a flat top 29, which serves to support an annular disc 12.
  • the annular disc 12 corresponds to that already described in the preceding embodiments and has a male thread 13 as a closure means.
  • the dome plate 26 has a central, to the bottom 27 stepwise or conically widening through hole 30 for the implementation of the steel bar 3. Otherwise, that applies among the Fig. 1 and 4 Said analogously.
  • Fig. 6 differs from the previously described in that as a connecting element instead of the loose annular disc 12 a cylindrical, integrally from the top 29 of the dome plate 26th worked out approach 39 is used, which has a thread 23 as a closure means on the outer circumference.
  • This embodiment thus corresponds, mutatis mutandis, in Fig. 4 so as to avoid repetition reference is made to the local part of the description.
  • FIG. 7 Another embodiment of the invention is in Fig. 7 shown.
  • a modified dome plate 26 ' which is supported on an anchor plate 8' and which is characterized by the circumference of the dome plate 26 'encircling, protruding from the top 29' collar 38.
  • the collar 38 On its inner side facing the longitudinal axis 4, the collar 38 is provided with closure means, for example with a thread, which cooperate on the outer circumference of the cap 17 'to produce a frictional connection with complementary closure means.
  • closure means for example with a thread
  • Fig. 8a and b show the implementation of the invention in an anchor 1 ', the Ankerzugglied several individual elements in the form of steel wire strands 31 has. Due to the existing symmetry with respect to the longitudinal axis 4 show the Fig. 8a and b for simplicity, only one half of the anchor head 7 '.
  • Both the in Fig. 8a as well as in Fig. 8b illustrated anchor 1 ' has a plurality of steel wire strands 31, which combined to form a bundle in the anchoring region of the borehole 2 occur.
  • the borehole 2 is bordered by an anchor plate 8, which is supported against the base 10 and which is provided with a central, aligned with the borehole 2 opening.
  • the anchor plate 8 serves as a bearing surface for a coaxially arranged anchor plate 32, which is provided with a number of through-holes corresponding to the number of steel wire strands 31, 31 conically widening in the direction of the ends of the steel wire strands.
  • the steel wire strands 31 are threaded through the through-holes and anchored in a known manner by means of conical anchoring wedges 33 arranged in the conical section of the through-holes.
  • first closure means for example a thread
  • second complementarily formed closure means on the inner circumference of the cap 17.
  • first closure means are not arranged on the anchor plate 8, but on the outer circumference of the anchoring disc 32, which in turn enter into a frictional connection with the second closure means on the inner circumference of the cap 17.

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  • 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)
EP09000397.1A 2008-01-28 2009-01-14 Ancrage de terre ou de rocher doté d'une articulation de tirant d'ancrage composée d'un ou plusieurs éléments individuels ayant une formation de tête d'ancrage protégée contre la corrosion Not-in-force EP2085521B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202008001248U DE202008001248U1 (de) 2008-01-28 2008-01-28 Erd- oder Felsanker mit einem Ankerzugglied aus einem oder mehreren Einzelelementen mit korrosionsgeschützter Ankerkopfausbildung

Publications (2)

Publication Number Publication Date
EP2085521A1 true EP2085521A1 (fr) 2009-08-05
EP2085521B1 EP2085521B1 (fr) 2015-08-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000397.1A Not-in-force EP2085521B1 (fr) 2008-01-28 2009-01-14 Ancrage de terre ou de rocher doté d'une articulation de tirant d'ancrage composée d'un ou plusieurs éléments individuels ayant une formation de tête d'ancrage protégée contre la corrosion

Country Status (8)

Country Link
US (1) US7967532B2 (fr)
EP (1) EP2085521B1 (fr)
JP (1) JP2009174309A (fr)
KR (1) KR20090082864A (fr)
AU (1) AU2009200236B2 (fr)
CA (1) CA2651242C (fr)
DE (1) DE202008001248U1 (fr)
ZA (1) ZA200900612B (fr)

Cited By (1)

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CN102979541A (zh) * 2012-12-11 2013-03-20 安徽恒源煤电股份有限公司 一种新型锚杆锚索安装方法

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GR1006289B (el) * 2008-02-14 2009-02-25 Ιωαννης Λυμπερης Ελκυστηρας δομικων εργων
WO2010072792A1 (fr) 2008-12-23 2010-07-01 Htp Motion Gmbh Douille d'ancrage pour trous dans la roche
US20110036025A1 (en) * 2009-08-13 2011-02-17 Boulay Luke F Ground Anchor
DE202010006059U1 (de) * 2010-04-23 2010-07-22 Stahlwerk Annahütte Max Aicher GmbH & Co KG Gewindestab
DE202010010749U1 (de) 2010-07-28 2010-10-21 Bundesanstalt für Wasserbau Einbetonierbare, verschieblich ausgebildete und ermüdungsfreie Kopfkonstruktion zur Verankerung von Zugelementen an zyklisch beanspruchten Bauteilen
CL2011000042A1 (es) 2011-01-07 2011-06-17 Sistema de fortificacion que comprende una barra helicoidal estandar, una cabeza de expansion adaptada a la rosca de la barra, un elemento de material plastico, un tubo de plastico corrugado, una placa de fortificacion estandar y una tuerca de fortificacion roscada segun el perno helicoidal que utiliza.
ES2525070T3 (es) * 2011-02-17 2014-12-17 Trumer Schutzbauten Gesmbh Protección contra la caída de piedras
CN102226406B (zh) * 2011-05-10 2013-09-18 中铁十二局集团第一工程有限公司 超长超前锚杆施工方法
US20130019542A1 (en) * 2011-07-20 2013-01-24 Bishop Richard B Safe room ii
DE202012101908U1 (de) * 2012-05-24 2013-08-26 Georg Rothbucher Konvergenzbolzen
DE102013002734B4 (de) * 2013-02-19 2015-03-05 Firep Rebar Technology Gmbh Ankerkopf für einen Zuganker und Ankermutter für einen Ankerkopf eines Zugankers
US9926698B2 (en) * 2014-05-19 2018-03-27 Felix Sorkin Cap for anchor of post-tension anchorage system
WO2017023922A1 (fr) 2015-08-04 2017-02-09 Felix Sorkin Capuchon de poche pour élément en béton post-tendu
EP3128096B1 (fr) * 2015-08-04 2018-11-07 Felix L. Sorkin Procédé de formation d'un élément de béton précontraint
CN105909288B (zh) * 2016-04-18 2018-05-04 东北大学 一种防岩爆吸波耗能锚杆
US9725866B1 (en) 2016-11-09 2017-08-08 Moretrench American Corporation Tieback assembly with removable tendon threaded element
EP3336258B1 (fr) * 2016-12-16 2022-03-09 Stahlton AG Ancrage d'extrémité pour une ancre de sol et/ou de roche
DE102016124736A1 (de) * 2016-12-19 2018-06-21 Schöck Bauteile GmbH Bauelement zur Wärmedämmung
US10508447B2 (en) * 2017-04-28 2019-12-17 Precision-Hayes International Inc. Sealing cover for concrete anchor
CN109834819A (zh) * 2018-11-15 2019-06-04 深圳市路桥建设集团有限公司 封锚器
US11486143B2 (en) * 2020-03-26 2022-11-01 Felix Sorkin Intermediate anchor assembly
DE102020132950A1 (de) 2020-12-10 2022-06-15 Geobrugg Ag Korrosionsschutzvorrichtung, Korrosionsschutzsystem, korrosionsgeschütztes Böschungsstabilisierungssystem und Verfahren zur korrosionsgeschützten Verankerung eines geotechnischen Ankerelements
CN113585239A (zh) * 2021-09-02 2021-11-02 中庆建设有限责任公司 一种预应力锚桩
CN113882397A (zh) * 2021-11-22 2022-01-04 哈尔滨工业大学 一种寒区预应力自调节抗冻拔螺纹锚杆支护体系

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EP1980712A1 (fr) * 2007-04-13 2008-10-15 Lipsker & Partners Engineering Services (1975) Ltd Cellule de chargement pour poteaux d'ancrage

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CN102979541A (zh) * 2012-12-11 2013-03-20 安徽恒源煤电股份有限公司 一种新型锚杆锚索安装方法

Also Published As

Publication number Publication date
US7967532B2 (en) 2011-06-28
AU2009200236A1 (en) 2009-08-13
CA2651242C (fr) 2012-03-27
CA2651242A1 (fr) 2009-07-28
AU2009200236B2 (en) 2014-06-19
KR20090082864A (ko) 2009-07-31
ZA200900612B (en) 2009-12-30
DE202008001248U1 (de) 2008-03-27
EP2085521B1 (fr) 2015-08-26
US20090191005A1 (en) 2009-07-30
JP2009174309A (ja) 2009-08-06

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