EP0402247A1 - Method and apparatus for loosening the panel and sealing of a wall moulded in the ground, from the concrete to which it adhers - Google Patents

Method and apparatus for loosening the panel and sealing of a wall moulded in the ground, from the concrete to which it adhers Download PDF

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Publication number
EP0402247A1
EP0402247A1 EP90401535A EP90401535A EP0402247A1 EP 0402247 A1 EP0402247 A1 EP 0402247A1 EP 90401535 A EP90401535 A EP 90401535A EP 90401535 A EP90401535 A EP 90401535A EP 0402247 A1 EP0402247 A1 EP 0402247A1
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EP
European Patent Office
Prior art keywords
joint
concrete
seal
panel
ground
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
EP90401535A
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German (de)
French (fr)
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EP0402247B1 (en
Inventor
Paul Cannac
Gérard Geist
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.)
Soletanche SA
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Soletanche SA
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Filing date
Publication date
Application filed by Soletanche SA filed Critical Soletanche SA
Priority to AT90401535T priority Critical patent/ATE83277T1/en
Publication of EP0402247A1 publication Critical patent/EP0402247A1/en
Application granted granted Critical
Publication of EP0402247B1 publication Critical patent/EP0402247B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof

Definitions

  • the present invention relates to a method and a device for removing from the concrete to which it adheres, an end joint of a wall panel molded into the ground.
  • the technique for making a wall molded into the ground is well known and generally consists in digging a trench, placing a joint at its end, concreting the trench and extracting the joint.
  • the trench is generally dug under bentonite mud. Once the trench is dug, a joint is immersed in the mud which is placed at the end of the trench. Concrete is then poured to replace the mud, the concrete therefore coming into contact with the joint. When the concrete has set, a new trench is dug adjacent to the first on the other side of the joint, generally using the latter to guide the perforating machine.
  • the present invention aims to provide a new method for overcoming these drawbacks.
  • the invention firstly relates to a method for removing the concrete to which it adheres, an end joint of a wall panel molded into the ground, characterized in that a shock is applied to the joint on the opposite side to the concrete using a tool connected to the joint at a point located above the point of impact.
  • the shock itself has of course a favorable effect for the separation of the joint.
  • the main thing is the reaction exerted by the tool on the joint at the location to which they are connected, this reaction causing the joint to be torn from the concrete to which it adheres.
  • the shock can be applied very simply using the digging bucket of the trench, the upper part of which is connected to the joint. By opening the pockets of the bucket, the shock is exerted by the pocket located on the side of the seal.
  • the invention also relates to a device for implementing the method described above, characterized in that it comprises in combination a slide formed in the seal and a tool provided with a member arranged to cooperate with the slide and a member arranged to give a shock to the joint.
  • the drawings represent, during production, a wall molded in the ground 1, the panel 2 being already concreted and the panel 3 having just been dug under bentonite mud.
  • a joint 4 separates the panels 2 and 3 and adheres to the concrete of the panel 2 from which it is a question of peeling it off.
  • the seal 4 is produced in the form of a box 5 in which a slide 6 is formed delimited by four walls, the wall located on the side of the panel 3 being provided with a longitudinal slot 7.
  • a digging bucket provided with its pockets 9a and 9b and with its attachment cables 10.
  • a retractable rod 11 is mounted on the bucket so as to be able to be in a deployed position shown in the drawings for the separation of the seal 4, or in a retracted position not shown during the use of the bucket for digging the trench.
  • the rod 11 carries at its end a guide and reaction member 12 capable of engaging in the slide 6 with the rod 11 projecting from this slide through the slot 7.
  • the distance between the bucket 8 and the seal 4 is such that, if the pockets 9a and 9b are opened, the pocket 9b come up against the seal 4.
  • the pockets 9a and 9b are opened, preferably as abruptly as possible, a shock is exerted at 13 on the joint 4.
  • the member 12 is pressed against the split wall of the slide 6 and consequently exerts a violent force on the seal 4 on the side of the bucket, thus causing it to come off from the concrete 2.
  • This operation can be carried out by starting from the top of the trench and then gradually, lower and lower to take off the joint 4 over its entire height.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Piles And Underground Anchors (AREA)
  • Finishing Walls (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The invention relates to a method for loosening an end seal (4) of a panel of a wall cast in the ground from the concrete (2) to which it adheres. <??>A shock is applied to the seal on the opposite side to the concrete by means of a tool (8) connected to the seal at a point (11, 12) located above the impact point (13). <??>Device for carrying out this method. <IMAGE>

Description

La présente invention concerne un procédé et un dispositif pour décoller du béton auquel il adhère, un joint d'extrémité de panneau de paroi moulée dans le sol.The present invention relates to a method and a device for removing from the concrete to which it adheres, an end joint of a wall panel molded into the ground.

La technique de réalisation de paroi moulée dans le sol est bien connue et consiste généralement à creuser une tranchée, à disposer un joint à son extrémité, à bétonner la tranchée et à extraire le joint.The technique for making a wall molded into the ground is well known and generally consists in digging a trench, placing a joint at its end, concreting the trench and extracting the joint.

Dans ces procédés, la tranchée est généralement creusée sous boue bentonitique. Une fois la tranchée creusée, on immerge dans la boue un joint que l'on place à l'extrémité de la tranchée. Du béton est ensuite coulé pour remplacer la boue, le béton venant donc au contact du joint. Lorsque le béton a fait prise, on creuse une nouvelle tranchée adjacente à la première de l'autre côté du joint en utilisant généralement celui-ci pour guider l'engin de perforation.In these methods, the trench is generally dug under bentonite mud. Once the trench is dug, a joint is immersed in the mud which is placed at the end of the trench. Concrete is then poured to replace the mud, the concrete therefore coming into contact with the joint. When the concrete has set, a new trench is dug adjacent to the first on the other side of the joint, generally using the latter to guide the perforating machine.

Le problème qui se pose est alors celui de l'extraction du joint. En effet, le joint adhère fortement au béton, de sorte qu'il est nécessaire de le décoller préalablement à son extraction. Ce décollement est généralement effectué par un déplacement latéral à l'aide de vérins ou de coins. Ces dispositifs présentent toutefois l'inconvénient d'être complexes et d'immobiliser le chantier.The problem which then arises is that of extracting the seal. Indeed, the joint strongly adheres to the concrete, so that it is necessary to peel it before its extraction. This detachment is generally carried out by a lateral displacement using jacks or wedges. However, these devices have the drawback of being complex and of immobilizing the site.

On a également proposé dans le document FR-A-2613395 de revêtir la face du joint côté béton d'un matériau mince susceptible d'être abandonné dans la tranchée et d'extraire le joint sensiblement verticalement en abandonnant le matériau de revêtement.It has also been proposed in document FR-A-2613395 to coat the face of the joint on the concrete side with a thin material capable of being abandoned in the trench and to extract the joint substantially vertically by abandoning the coating material.

Bien que donnant d'une manière générale satisfaction, ce dernier procédé nécessite toutefois d'exercer des efforts verticaux très importants sur le joint.Although generally satisfactory, the latter method however requires exerting very significant vertical forces on the joint.

La présente invention vise à fournir un nouveau procédé permettant de pallier ces inconvénients.The present invention aims to provide a new method for overcoming these drawbacks.

A cet effet, l'invention a tout d'abord pour objet un procédé pour décoller du béton auquel il adhère, un joint d'extrémité de panneau de paroi moulée dans le sol, caractérisé par le fait que l'on applique un choc sur le joint du côté opposé au béton à l'aide d'un outil relié au joint en un point situé au-dessus du point d'impact.To this end, the invention firstly relates to a method for removing the concrete to which it adheres, an end joint of a wall panel molded into the ground, characterized in that a shock is applied to the joint on the opposite side to the concrete using a tool connected to the joint at a point located above the point of impact.

Le choc lui-même a bien entendu un effet favorable pour le décollement du joint. Toutefois, l'essentiel est la réaction exercée par l'outil sur le joint à l'emplacement auquel ils sont reliés, cette réaction provoquant un arrachement du joint du béton auquel il adhère.The shock itself has of course a favorable effect for the separation of the joint. However, the main thing is the reaction exerted by the tool on the joint at the location to which they are connected, this reaction causing the joint to be torn from the concrete to which it adheres.

Dans le cas d'un panneau de grande profondeur, on procèdera de préférence par passes successives en appliquant successivement une pluralité de chocs sur le joint en des points situés de plus en plus profond dans la tranchée.In the case of a very deep panel, it is preferable to proceed by successive passes by successively applying a plurality of shocks to the joint at points situated increasingly deep in the trench.

Le choc peut être appliqué très simplement en utilisant la benne de creusement de la tranchée dont on relie la partie supérieure au joint. En ouvrant les poches de la benne, le choc est exercé par la poche située du côté du joint.The shock can be applied very simply using the digging bucket of the trench, the upper part of which is connected to the joint. By opening the pockets of the bucket, the shock is exerted by the pocket located on the side of the seal.

L'invention a également pour objet un dispositif pour la mise en oeuvre du procédé décrit ci-dessus, caractérisé par le fait qu'il comprend en combinaison une glissière formée dans le joint et un outil muni d'un organe agencé pour coopérer avec la glissière et d'un organe agencé pour donner un choc sur le joint.The invention also relates to a device for implementing the method described above, characterized in that it comprises in combination a slide formed in the seal and a tool provided with a member arranged to cooperate with the slide and a member arranged to give a shock to the joint.

On décrira maintenant à titre d'exemple non limitatif un mode de réalisation particulier de l'invention en référence aux dessins schématiques annexés dans lesquels

  • - la figure 1 est une vue en élévation d'une benne et d'un joint d'extrémité de panneau et,
  • - la figure 2 est une vue en coupe selon la ligne II-II de la figure 1.
A particular embodiment of the invention will now be described by way of nonlimiting example with reference to the appended schematic drawings in which
  • FIG. 1 is an elevation view of a bucket and a panel end seal and,
  • - Figure 2 is a sectional view along line II-II of Figure 1.

Les dessins représentent, en cours de réalisation, une paroi moulée dans le sol 1, le panneau 2 étant déjà bétonné et le panneau 3 venant d'être creusé sous boue bentonitique.The drawings represent, during production, a wall molded in the ground 1, the panel 2 being already concreted and the panel 3 having just been dug under bentonite mud.

Un joint 4 sépare les panneaux 2 et 3 et adhère au béton du panneau 2 duquel il s'agit de le décoller.A joint 4 separates the panels 2 and 3 and adheres to the concrete of the panel 2 from which it is a question of peeling it off.

A cet effet, le joint 4 est réalisé sous forme d'un caisson 5 dans lequel est formée une glissière 6 délimitée par quatre parois, la paroi située du côté du panneau 3 étant muni d'une fente longitudinale 7.To this end, the seal 4 is produced in the form of a box 5 in which a slide 6 is formed delimited by four walls, the wall located on the side of the panel 3 being provided with a longitudinal slot 7.

On a représenté schématiquement en 8 une benne de creusement munie de ses poches 9a et 9b et de ses câbles d'attache 10.There is shown diagrammatically at 8 a digging bucket provided with its pockets 9a and 9b and with its attachment cables 10.

A la partie supérieure du corps de benne 8, une tige rétractable 11 est montée sur la benne de manière à pouvoir se trouver dans une position déployée représentée aux dessins pour le décollement du joint 4, ou dans une position rétractée non représentée lors de l'utilisation de la benne pour le creusement de la tranchée.At the upper part of the body of the bucket 8, a retractable rod 11 is mounted on the bucket so as to be able to be in a deployed position shown in the drawings for the separation of the seal 4, or in a retracted position not shown during the use of the bucket for digging the trench.

La tige 11 porte à son extrémité un organe de guidage et de réaction 12 susceptible de s'engager dans la glissière 6 avec la tige 11 dépassant de cette glissière par la fente 7.The rod 11 carries at its end a guide and reaction member 12 capable of engaging in the slide 6 with the rod 11 projecting from this slide through the slot 7.

Lorsque la tige 11 est dans sa position déployée et que l'organe 12 est engagé dans la glissière 6, la distance entre la benne 8 et le joint 4 est telle que, si l'on ouvre les poches 9a et 9b, la poche 9b vienne buter contre le joint 4.When the rod 11 is in its deployed position and the member 12 is engaged in the slide 6, the distance between the bucket 8 and the seal 4 is such that, if the pockets 9a and 9b are opened, the pocket 9b come up against the seal 4.

Si par conséquent dans cette position, on ouvre les poches 9a et 9b, de préférence le plus brutalement possible, on exerce un choc en 13 sur le joint 4.If consequently in this position, the pockets 9a and 9b are opened, preferably as abruptly as possible, a shock is exerted at 13 on the joint 4.

Par réaction, l'organe 12 vient se plaquer contre la paroi fendue de la glissière 6 et exercer par conséquent un effort violent sur le joint 4 du côté de la benne, provoquant ainsi son décollement du béton 2.By reaction, the member 12 is pressed against the split wall of the slide 6 and consequently exerts a violent force on the seal 4 on the side of the bucket, thus causing it to come off from the concrete 2.

Cette opération peut être réalisée en commençant par le haut de la tranchée puis progressivement, de plus en plus bas pour décoller le joint 4 sur toute sa hauteur.This operation can be carried out by starting from the top of the trench and then gradually, lower and lower to take off the joint 4 over its entire height.

Diverses variantes et modifications peuvent bien entendu être apportées à la description qui précède sans sortir pour autant ni du cadre ni de l'esprit de l'invention.Various variants and modifications can of course be made to the above description without however departing from the scope or the spirit of the invention.

C'est ainsi que, si l'on ne souhaite pas immobiliser la benne de creusement pendant les opérations de décollement du joint, on peut utiliser un outil spécial coopérant de la même manière avec la glissière à sa partie supérieure, et muni à sa partie inférieure de moyens quelconques permettant d'exercer un choc sur le joint.Thus, if one does not wish to immobilize the digging bucket during the operations of detaching the seal, one can use a special tool cooperating in the same way with the slide at its upper part, and provided at its lower part of any means allowing to exert a shock on the joint.

On pourrait également adopter toute autre forme pour la glissière et l'organe de guidage et de réaction avec lequel elle coopère.We could also adopt any other form for the slide and the guide and reaction member with which it cooperates.

Claims (4)

1- Procédé pour décoller du béton (2) auquel il adhère, un joint d'extrémité (4) de panneau de paroi moulée dans le sol, caractérisé par le fait que l'on applique un choc sur le joint du côté opposé au béton, à l'aide d'un outil (8) relié au joint en sun point (11, 12) situé au-dessus du point d'impact (13).1- Method for removing concrete (2) to which it adheres, an end joint (4) of a wall panel molded into the ground, characterized in that a shock is applied to the joint on the side opposite to the concrete , using a tool (8) connected to the sun point seal (11, 12) located above the impact point (13). 2 - Procédé selon la revendication 1, caractérisé par le fait que l'on applique successivement une pluralité de chocs sur le joint en des points situés de plus en plus profonds dans la tranchée.2 - Method according to claim 1, characterized in that one successively applies a plurality of shocks on the joint at points located increasingly deeper in the trench. 3 - Procédé selon l'une quelconque des revendications 1 et 2, caractérisé par le fait que l'on applique ledit choc en ouvrant les poches (9a, 9b) d'une benne (8) de creusement de tranchée dont la partie supérieure est reliée au joint.3 - Method according to any one of claims 1 and 2, characterized in that one applies said shock by opening the pockets (9a, 9b) of a bucket (8) for trench digging whose upper part is connected to the joint. 4 - Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 3, caractérisé par le fait qu'il comprend en combinaison une glissière (6) formée dans ledit joint et un outil (8) muni d'un organe (12) agencé pour coopérer avec la glissière et d'un organe (9b) agencé pour donner un choc sur le joint.4 - Device for implementing the method according to any one of claims 1 to 3, characterized in that it comprises in combination a slide (6) formed in said seal and a tool (8) provided with a member (12) arranged to cooperate with the slide and a member (9b) arranged to give a shock to the joint.
EP90401535A 1989-06-06 1990-06-06 Method and apparatus for loosening the panel and sealing of a wall moulded in the ground, from the concrete to which it adhers Expired - Lifetime EP0402247B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90401535T ATE83277T1 (en) 1989-06-06 1990-06-06 METHOD AND DEVICE FOR REMOVING A CONCRETE-ADHESIVE SEALANT OF A WALL SECTION POURED IN GROUND.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8907456 1989-06-06
FR8907456A FR2647828B1 (en) 1989-06-06 1989-06-06 METHOD AND DEVICE FOR TAKING OFF CONCRETE TO WHICH IT ADHESDS, AN END JOINT OF A WALL PANEL MOLDED IN THE GROUND

Publications (2)

Publication Number Publication Date
EP0402247A1 true EP0402247A1 (en) 1990-12-12
EP0402247B1 EP0402247B1 (en) 1992-12-09

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EP90401535A Expired - Lifetime EP0402247B1 (en) 1989-06-06 1990-06-06 Method and apparatus for loosening the panel and sealing of a wall moulded in the ground, from the concrete to which it adhers

Country Status (8)

Country Link
US (1) US5056959A (en)
EP (1) EP0402247B1 (en)
JP (1) JPH0372110A (en)
AT (1) ATE83277T1 (en)
CA (1) CA2018407A1 (en)
DE (1) DE69000562T2 (en)
ES (1) ES2036095T3 (en)
FR (1) FR2647828B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998051867A1 (en) 1997-05-12 1998-11-19 Kvaerner Cementation Foundations Limited Hydrophilic waterbar for diaphragm wall joints
DE19817982C1 (en) * 1998-04-22 1999-11-18 Leffer Stahl & App Formwork element of a flat joint formwork and method for its expansion
EP1223248A1 (en) 2001-01-15 2002-07-17 Cementation Foundations Skanska Limited Waterstop for foundation elements
WO2013007968A2 (en) 2011-07-14 2013-01-17 Coupland John William Diaphragm wall apparatus and methods
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)
US11268260B2 (en) 2017-11-06 2022-03-08 Ccmj Systems Ltd Cutting assembly

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AU6990691A (en) * 1991-01-22 1992-05-07 Frankipile Australia Pty. Limited Concrete shuttering element
FR2675526A1 (en) * 1991-04-19 1992-10-23 Sif Entreprise Bachy METHOD OF GUIDING THE EXCAVATION TOOL USED TO PRODUCE A GROUND MOLDED WALL, AND EXCAVATION TOOL FOR IMPLEMENTING SAID METHOD
FR2676763B1 (en) * 1991-05-23 1993-08-13 Sol Cie PROCESS FOR TAKING OFF A PANEL END JOINT WHEN PRODUCING MOLDED WALLS IN THE GROUND AND JOINT FOR CARRYING OUT THIS METHOD.
EP0531600A1 (en) * 1991-09-13 1993-03-17 FIETZ &amp; LEUTHOLD AG Method of making trench walls and shuttering element used in the method
IT1294756B1 (en) * 1997-09-12 1999-04-12 Finic Bv SHOULDER TUBE WITH TWO WINGS FOR THE FORMATION OF THE JOINT SURFACES BETWEEN ELEMENTS OF WALLS CASTED IN CONCRETE
FR2791072B1 (en) 1999-03-19 2001-06-15 Cie Du Sol DEVICE FOR AIDING FORMWORK
US6964301B2 (en) * 2002-06-28 2005-11-15 Schlumberger Technology Corporation Method and apparatus for subsurface fluid sampling
US8899323B2 (en) 2002-06-28 2014-12-02 Schlumberger Technology Corporation Modular pumpouts and flowline architecture
US7178591B2 (en) * 2004-08-31 2007-02-20 Schlumberger Technology Corporation Apparatus and method for formation evaluation
US8210260B2 (en) * 2002-06-28 2012-07-03 Schlumberger Technology Corporation Single pump focused sampling
US8555968B2 (en) * 2002-06-28 2013-10-15 Schlumberger Technology Corporation Formation evaluation system and method
CN108265703B (en) * 2018-02-12 2024-02-23 江苏地龙重型机械有限公司 Cutter device for seamless grooving machine of thin-wall continuous wall

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998051867A1 (en) 1997-05-12 1998-11-19 Kvaerner Cementation Foundations Limited Hydrophilic waterbar for diaphragm wall joints
DE19817982C1 (en) * 1998-04-22 1999-11-18 Leffer Stahl & App Formwork element of a flat joint formwork and method for its expansion
EP1223248A1 (en) 2001-01-15 2002-07-17 Cementation Foundations Skanska Limited Waterstop for foundation elements
WO2013007968A2 (en) 2011-07-14 2013-01-17 Coupland John William Diaphragm wall apparatus and methods
US9371623B2 (en) 2011-07-14 2016-06-21 Ccmj Systems Ltd Diaphragm wall apparatus and methods
US10988911B2 (en) 2017-04-26 2021-04-27 Ccmj Systems Ltd Diaphragm walls
US11268260B2 (en) 2017-11-06 2022-03-08 Ccmj Systems Ltd Cutting assembly
US11225769B2 (en) 2018-02-15 2022-01-18 Ccmj Systems Ltd Shear key former apparatus and method(s)

Also Published As

Publication number Publication date
JPH0372110A (en) 1991-03-27
US5056959A (en) 1991-10-15
FR2647828A1 (en) 1990-12-07
DE69000562T2 (en) 1993-04-22
ES2036095T3 (en) 1993-05-01
CA2018407A1 (en) 1990-12-06
FR2647828B1 (en) 1991-08-30
DE69000562D1 (en) 1993-01-21
EP0402247B1 (en) 1992-12-09
ATE83277T1 (en) 1992-12-15

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