EP1310595B1 - Anchoring device - Google Patents

Anchoring device Download PDF

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Publication number
EP1310595B1
EP1310595B1 EP02292778A EP02292778A EP1310595B1 EP 1310595 B1 EP1310595 B1 EP 1310595B1 EP 02292778 A EP02292778 A EP 02292778A EP 02292778 A EP02292778 A EP 02292778A EP 1310595 B1 EP1310595 B1 EP 1310595B1
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EP
European Patent Office
Prior art keywords
anchoring
slab
concrete
anchoring device
anchoring element
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
EP02292778A
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German (de)
French (fr)
Other versions
EP1310595A1 (en
Inventor
Nicolas Rada
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.)
Alstom SA
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Alstom SA
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Filing date
Publication date
Application filed by Alstom SA filed Critical Alstom SA
Publication of EP1310595A1 publication Critical patent/EP1310595A1/en
Application granted granted Critical
Publication of EP1310595B1 publication Critical patent/EP1310595B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
    • E01B9/18—Plugs, sleeves, thread linings, or other inserts for holes in sleepers for concrete sleepers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry

Definitions

  • the invention relates to an anchoring device comprising a metallic anchoring element intended for fastening a railway track to a concrete slab, this anchoring element being coated with an adhesion binder to improve the held with the concrete and being embedded directly in the slab during the casting of the slab.
  • the anchoring device according to the invention is used in particular for fixing the saddles supporting the rails of a railway resting on a concrete slab.
  • Document FR 2 425 014 discloses anchoring elements embedded directly in a concrete slab which make it possible to fix a railroad track, these anchoring elements being constituted by an anchoring sheath having a metal outer casing provided with multiple beads coming into contact with the concrete and a lag screw screwed into the anchor sheath.
  • Such anchoring elements are usually embedded in the slab by simply casting, by gravity, concrete around the anchoring element.
  • it is often difficult to obtain good contact between the concrete and the anchoring element for example due to the formation of air bubbles at the interface between the anchoring element and the concrete, or when the surface state of the anchoring element does not allow a good natural bonding of the concrete, or even when there is a phenomenon of repulsion due to the texture and the nature of the materials in contact like this this this is particularly the case when the anchor element is galvanized and passivated, which limits the holding of the anchoring element in the concrete slab.
  • an anchoring device comprising a metal anchor element intended to be embedded directly in a concrete element, for example during the pouring of concrete in a mold adapted to form a cross of railway.
  • the anchoring element consists, for example, of a metal strip wound helically around a mandrel, so that the outer surface of the anchoring element has a helical bead favoring the holding of this element in concrete.
  • Said outer surface may be coated with an adhesion binder such as a thin layer of phenol formaldehyde resin, which serves as a binder between the helical windings of the metal strip and also improves the cohesion between the anchoring element and the concrete.
  • An object of the present invention is to provide an anchoring device for reinforcing the holding of an anchoring element of the device in a concrete slab, which device must be simple and economical to achieve.
  • the subject of the invention is a device as defined by claim 1.
  • the resin is an ethylene vinyl acetate polymer.
  • FIG. 1 showing a sectional view of an anchoring element embedded in a concrete slab and included in an anchoring device according to the invention.
  • FIG. 1 represents an anchoring element of an anchoring device according to the invention, embedded in a concrete slab 2.
  • the anchoring element 1 comprises an anchor sheath 11, known per se, in which is screwed a lag bolt 12, this lag bolt 12 serving to immobilize the base 5 of a saddle intended to support a railway track not shown in the figure.
  • the anchoring sheath 11 has a galvanized and passivated metal outer casing.
  • the casing of the anchoring sheath 11 is covered, prior to the casting of the concrete slab 2, with a mortar 3 consisting of a resin mixed with sand and cement.
  • the resin used is preferably an ethylene vinyl acetate polymer.
  • This mortar 3 is advantageously applied to the anchoring sleeves 11 in an independent operation carried out well before the pouring of the concrete slab 2 so that mortar 3 is perfectly dry during handling of the anchoring sleeves 11 and during casting of the concrete slab 2.
  • the concrete slab 2 is for example obtained by simple gravity casting in a formwork, the concrete flowing around the mortar 3 covering the anchor sheath 11, the latter being held in a fixed position during this operation.
  • Such a method makes it possible to appreciably improve the holding of the anchor sheath in the concrete slab thanks to the very good cohesion that exists between the galvanized metal casing of the anchor sheath and the mortar as well as between the mortar and the concrete.
  • the invention also applies to other types of anchoring elements and may in particular be used to reinforce the strength of a substantially smooth anchoring rod intended to be embedded directly in a concrete slab and having a threaded upper part, overflowing the concrete slab, for receiving fasteners of the railway and to allow their immobilization by means of a nut.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)
  • Soil Working Implements (AREA)
  • Bridges Or Land Bridges (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Foundations (AREA)
  • Dowels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Finger-Pressure Massage (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The procedure for reinforcing a cast concrete slab anchor (1) in the form of a long bolt (12) in a sleeve (11) with an outer galvanized metal casing consists of coating the sleeve with a mortar (3) made from a resin mixed with sand and cement before the concrete is poured.

Description

L'invention se rapporte à un dispositif d'ancrage comprenant un élément d'ancrage métallique destiné à la fixation d'une voie ferrée sur une dalle en béton, cet élément d'ancrage étant enduit d'un liant d'adhésion pour améliorer la tenue avec le béton et étant noyé directement dans la dalle lors de la coulée de la dalle. Le dispositif d'ancrage selon l'invention sert notamment à la fixation des selles supportant les rails d'une voie ferrée reposant sur une dalle de béton.The invention relates to an anchoring device comprising a metallic anchoring element intended for fastening a railway track to a concrete slab, this anchoring element being coated with an adhesion binder to improve the held with the concrete and being embedded directly in the slab during the casting of the slab. The anchoring device according to the invention is used in particular for fixing the saddles supporting the rails of a railway resting on a concrete slab.

Il est connu du document FR 2 425 014, des éléments d'ancrage noyés directement dans une dalle de béton qui permettent la fixation d'un rail de voie ferrée, ces éléments d'ancrage étant constitués d'une gaine d'ancrage présentant une enveloppe externe métallique munie de multiples bourrelets venant au contact du béton et d'un un tire-fond se vissant dans la gaine d'ancrage.Document FR 2 425 014 discloses anchoring elements embedded directly in a concrete slab which make it possible to fix a railroad track, these anchoring elements being constituted by an anchoring sheath having a metal outer casing provided with multiple beads coming into contact with the concrete and a lag screw screwed into the anchor sheath.

De tels éléments d'ancrage sont habituellement noyés dans la dalle en coulant simplement, par gravité, du béton autour de l'élément d'ancrage. Toutefois, il est souvent difficile d'obtenir un bon contact entre le béton et l'élément d'ancrage du fait par exemple de la formation de bulles d'air à l'interface entre l'élément d'ancrage et le béton, ou lorsque l'état de surface de l'élément d'ancrage ne permet pas un bon accrochage naturel du béton, ou bien encore lorsqu'il se produit un phénomène de répulsion en raison de la texture et de la nature des matériaux en contact comme cela est notamment le cas quand l'élément d'ancrage est galvanisé et passivé, ce qui limite la tenue de l'élément d'ancrage dans la dalle de béton. Or, il est important pour une voie ferrée que les éléments d'ancrage soient fermement tenus dans la dalle de béton afin d'assurer un excellent maintien des rails de la voie ferrée.Such anchoring elements are usually embedded in the slab by simply casting, by gravity, concrete around the anchoring element. However, it is often difficult to obtain good contact between the concrete and the anchoring element, for example due to the formation of air bubbles at the interface between the anchoring element and the concrete, or when the surface state of the anchoring element does not allow a good natural bonding of the concrete, or even when there is a phenomenon of repulsion due to the texture and the nature of the materials in contact like this this is particularly the case when the anchor element is galvanized and passivated, which limits the holding of the anchoring element in the concrete slab. However, it is important for a railway that the anchoring elements are firmly held in the concrete slab to ensure excellent maintenance of the rails of the railway.

Il est en outre connu du document GB-A-641451 un dispositif d'ancrage comprenant un élément d'ancrage métallique destiné à être noyé directement dans un élément en béton, par exemple pendant le coulage du béton dans un moule adapté à former une traverse de voie ferrée. L'élément d'ancrage est par exemple constitué d'une bande métallique enroulée de façon hélicoïdale autour d'un mandrin, de telle sorte que la surface extérieure de l'élément d'ancrage présente un bourrelet hélicoïdal favorisant la tenue de cet élément dans le béton. Ladite surface extérieure peut être enduite d'un liant d'adhésion tel qu'une fine couche de résine phénolformaldehyde, qui permet de servir de liant entre les enroulements hélicoïdaux de la bande métallique et permet aussi d'améliorer la cohésion entre l'élément d'ancrage et le béton.It is further known from GB-A-641451 an anchoring device comprising a metal anchor element intended to be embedded directly in a concrete element, for example during the pouring of concrete in a mold adapted to form a cross of railway. The anchoring element consists, for example, of a metal strip wound helically around a mandrel, so that the outer surface of the anchoring element has a helical bead favoring the holding of this element in concrete. Said outer surface may be coated with an adhesion binder such as a thin layer of phenol formaldehyde resin, which serves as a binder between the helical windings of the metal strip and also improves the cohesion between the anchoring element and the concrete.

Un but de la présente invention est de proposer un dispositif d'ancrage permettant de renforcer la tenue d'un élément d'ancrage du dispositif dans une dalle de béton, lequel dispositif devant être simple et économique à réaliser.An object of the present invention is to provide an anchoring device for reinforcing the holding of an anchoring element of the device in a concrete slab, which device must be simple and economical to achieve.

A cet effet, l'invention a pour objet un dispositif tel que défini par la revendication 1.For this purpose, the subject of the invention is a device as defined by claim 1.

Selon une autre caractéristique de l'invention, la résine est un polymère éthylène vinyle acétate.According to another characteristic of the invention, the resin is an ethylene vinyl acetate polymer.

On comprendra mieux les buts, aspects et avantages de la présente invention, d'après la description donnée ci-après d'un mode particulier de réalisation de l'invention, présenté à titre d'exemple non limitatif, en se référant à la figure 1 annexée représentant une vue en coupe d'un élément d'ancrage noyé dans une dalle de béton et compris dans un dispositif d'ancrage selon l'invention.The aims, aspects and advantages of the present invention will be better understood from the description given below of a particular embodiment of the invention, given by way of non-limiting example, with reference to FIG. 1 attached showing a sectional view of an anchoring element embedded in a concrete slab and included in an anchoring device according to the invention.

Pour faciliter la lecture de cette figure, seuls les éléments nécessaires à la compréhension de l'invention ont été représentés.To facilitate the reading of this figure, only the elements necessary for the understanding of the invention have been represented.

La figure 1 représente un élément d'ancrage d'un dispositif d'ancrage selon l'invention, noyé dans une dalle de béton 2.FIG. 1 represents an anchoring element of an anchoring device according to the invention, embedded in a concrete slab 2.

Conformément à cette figure, l'élément d'ancrage 1 comporte une gaine d'ancrage 11, connue en soi, dans laquelle est vissé un tire-fond 12, ce tire-fond 12 servant à immobiliser l'embase 5 d'une selle destinée à supporter un rail de voie ferrée non représenté sur la figure. La gaine d'ancrage 11 possède une enveloppe extérieure métallique galvanisée et passivée.According to this figure, the anchoring element 1 comprises an anchor sheath 11, known per se, in which is screwed a lag bolt 12, this lag bolt 12 serving to immobilize the base 5 of a saddle intended to support a railway track not shown in the figure. The anchoring sheath 11 has a galvanized and passivated metal outer casing.

Conformément à l'invention, l'enveloppe de la gaine d'ancrage 11 est recouverte, préalablement à la coulée de la dalle de béton 2, d'un mortier 3 constitué d'une résine mélangée avec du sable et du ciment. La résine utilisée est préférentiellement un polymère éthylène vinyle acétate.According to the invention, the casing of the anchoring sheath 11 is covered, prior to the casting of the concrete slab 2, with a mortar 3 consisting of a resin mixed with sand and cement. The resin used is preferably an ethylene vinyl acetate polymer.

Ce mortier 3 est avantageusement appliqué sur les gaines d'ancrage 11 dans une opération indépendante réalisée bien avant la coulée de 1a dalle de béton 2 afin que mortier 3 soit parfaitement sec lors de la manipulation des gaines d'ancrage 11 et lors de la coulée de la dalle de béton 2.This mortar 3 is advantageously applied to the anchoring sleeves 11 in an independent operation carried out well before the pouring of the concrete slab 2 so that mortar 3 is perfectly dry during handling of the anchoring sleeves 11 and during casting of the concrete slab 2.

La dalle de béton 2 est par exemple obtenue par simple coulée par gravité dans un coffrage, le béton s'écoulant autour du mortier 3 recouvrant la gaine d'ancrage 11, cette dernière étant maintenue dans une position fixe lors de cette opération.The concrete slab 2 is for example obtained by simple gravity casting in a formwork, the concrete flowing around the mortar 3 covering the anchor sheath 11, the latter being held in a fixed position during this operation.

Un tel procédé permet d'améliorer notablement la tenue de la gaine d'ancrage dans la dalle de béton grâce à la très bonne cohésion qu'il y a entre l'enveloppe métallique galvanisée de la gaine d'ancrage et le mortier ainsi qu'entre le mortier et le béton.Such a method makes it possible to appreciably improve the holding of the anchor sheath in the concrete slab thanks to the very good cohesion that exists between the galvanized metal casing of the anchor sheath and the mortar as well as between the mortar and the concrete.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention tel que défini par les revendications annexéesOf course, the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications remain possible, especially from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of the invention as defined by the appended claims

Ainsi, l'invention s'applique également à d'autres types d'éléments d'ancrage et pourra notamment être utilisée pour renforcer la tenue d'une tige d'ancrage sensiblement lisse destinée à être noyée directement dans une dalle de béton et disposant d'une partie supérieure filetée, débordant de la dalle de béton, destinée à recevoir des pièces de fixation de la voie ferrée et à permettre leur immobilisation au moyen d'un écrou.Thus, the invention also applies to other types of anchoring elements and may in particular be used to reinforce the strength of a substantially smooth anchoring rod intended to be embedded directly in a concrete slab and having a threaded upper part, overflowing the concrete slab, for receiving fasteners of the railway and to allow their immobilization by means of a nut.

Claims (5)

  1. Anchoring device including a metal anchoring element (1) intended for fixing a railway track to a concrete slab (2), the said anchoring element being coated with an adhesive binder to improve the adherence with the concrete and being directly embedded in the slab (2) when making the said slab, characterised in that the said anchoring element (1) is made up of either an anchor rod with a galvanised and passivated outer surface or of an anchor shaft (11) that receives a sleeper screw (12) which comprises an outer cover that is galvanised and passivated, and in that the said adhesive binder is a mortar (3) made up of a resin mixed with sand and cement.
  2. Anchoring device according to claim 1, characterised in that the anchor rod has a threaded top section that sticks out of the slab and is intended for receiving parts for fixing the railway track.
  3. Anchoring device according to any one of the preceding claims, characterised in that the surface of the anchor rod is essentially smooth.
  4. Anchoring device according to claim 1, characterised in that the sleeper screw (12) is used to immobilise the base (5) of a rail-bearing plate intended to bear a railway track.
  5. Anchoring device according to any one of the claims from 1 to 4, characterised in that the resin is an ethylene vinyl acetate polymer.
EP02292778A 2001-11-13 2002-11-07 Anchoring device Expired - Lifetime EP1310595B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0114652 2001-11-13
FR0114652A FR2832194B1 (en) 2001-11-13 2001-11-13 METHOD FOR REINFORCING THE HOLD OF AN ANCHORING ELEMENT IN A CONCRETE SLAB

Publications (2)

Publication Number Publication Date
EP1310595A1 EP1310595A1 (en) 2003-05-14
EP1310595B1 true EP1310595B1 (en) 2006-05-03

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EP02292778A Expired - Lifetime EP1310595B1 (en) 2001-11-13 2002-11-07 Anchoring device

Country Status (16)

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US (1) US6804928B2 (en)
EP (1) EP1310595B1 (en)
JP (1) JP4102164B2 (en)
KR (1) KR100916859B1 (en)
AT (1) ATE325237T1 (en)
AU (1) AU2002301953B2 (en)
BR (1) BR0204640A (en)
CA (1) CA2411686A1 (en)
DE (1) DE60211099T2 (en)
DK (1) DK1310595T3 (en)
ES (1) ES2263752T3 (en)
FR (1) FR2832194B1 (en)
HK (1) HK1057770A1 (en)
MX (1) MXPA02011141A (en)
PT (1) PT1310595E (en)
TW (1) TWI257444B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049323A (en) * 2019-06-05 2020-12-08 李志强 Modularized autoclaved aerated concrete slab
CN113775078A (en) * 2021-09-06 2021-12-10 中国建筑第四工程局有限公司 Assembly type shear wall connecting mechanism, shear wall and shear wall construction method

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GB609485A (en) * 1943-01-27 1948-10-01 Maurice Vaes Improvements in locking devices to immobilise coach-screws, sleeper-screws and the like
GB641451A (en) * 1947-09-16 1950-08-09 Christian Marie Gaston Nerincx Thread linings for railway sleeper screws
GB943090A (en) * 1960-03-31 1963-11-27 Formica Int Compositions for use as an adhesive cement
FR2425014A2 (en) 1975-06-25 1979-11-30 Vape Sa Ets Screw-type fixing device for plaster etc. - has external sheath in two parts fitted around plastics inner sheath
FR2315568A1 (en) * 1975-06-25 1977-01-21 Vape Sa Ets SCREW FIXING DEVICE IN A CONSTRUCTION ELEMENT IN AGGLOMERATED MATERIAL
US4564315A (en) * 1983-07-05 1986-01-14 Rozanc Richard C Method for anchoring a bolt in a rock-like structure
US4614781A (en) * 1983-11-07 1986-09-30 Takeda Chemical Industries, Ltd. Resin from saponified ethylene-vinyl acetate copolymers, production and use thereof
AU555809B2 (en) * 1983-12-09 1986-10-09 Onoda Corp. Method for repairing and restoring deteriorated cement- containing inorganic material
US6200678B1 (en) * 1986-02-19 2001-03-13 Florida Wire & Cable, Inc. Corrosion resistant coated metal strand
JPS63223216A (en) * 1987-03-12 1988-09-16 Kensetsu Kiso Eng Kk Anchor fixing part
JPH07106955B2 (en) * 1990-04-03 1995-11-15 明星工業株式会社 Deterioration prevention method for concrete structures
FR2687706B1 (en) * 1992-02-24 1994-04-15 Vangensten Oue Pietro PROCESS FOR SEALING BY MORTAR OF DRAWERS IN CEILINGS OR VERTICAL WALLS OF STONE, CONCRETE, ROCK STRUCTURES.
US5965635A (en) * 1995-06-07 1999-10-12 Illinois Tool Works Inc. Alkylacrylate ester composition for anchoring materials in or to concrete or masonry
JP3525020B2 (en) * 1996-11-26 2004-05-10 財団法人鉄道総合技術研究所 Magnetic composite damping material for railroad rails, railroad rail damper, and railroad rail damping method
KR200245224Y1 (en) * 2001-04-12 2001-10-11 최봉림 Mechanical Zinc Plating Bolt
KR200244893Y1 (en) * 2001-06-12 2001-10-17 현기종 Step bolt for electric pole
KR200252800Y1 (en) * 2001-07-09 2001-11-17 박양원 Central Reserve for Road

Also Published As

Publication number Publication date
FR2832194B1 (en) 2004-10-01
ES2263752T3 (en) 2006-12-16
TW200300195A (en) 2003-05-16
AU2002301953B2 (en) 2008-08-21
FR2832194A1 (en) 2003-05-16
US6804928B2 (en) 2004-10-19
PT1310595E (en) 2006-06-30
MXPA02011141A (en) 2004-10-15
BR0204640A (en) 2003-09-16
DE60211099T2 (en) 2007-05-03
CA2411686A1 (en) 2003-05-13
US20030089048A1 (en) 2003-05-15
ATE325237T1 (en) 2006-06-15
KR100916859B1 (en) 2009-09-09
DE60211099D1 (en) 2006-06-08
DK1310595T3 (en) 2006-08-21
JP4102164B2 (en) 2008-06-18
TWI257444B (en) 2006-07-01
EP1310595A1 (en) 2003-05-14
JP2003160901A (en) 2003-06-06
KR20030040092A (en) 2003-05-22
HK1057770A1 (en) 2004-04-16

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