EP0462010A1 - ypparatus to facilitate extraction of a shuttering, and use in making a trench wall in the ground. - Google Patents

ypparatus to facilitate extraction of a shuttering, and use in making a trench wall in the ground. Download PDF

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Publication number
EP0462010A1
EP0462010A1 EP91401571A EP91401571A EP0462010A1 EP 0462010 A1 EP0462010 A1 EP 0462010A1 EP 91401571 A EP91401571 A EP 91401571A EP 91401571 A EP91401571 A EP 91401571A EP 0462010 A1 EP0462010 A1 EP 0462010A1
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EP
European Patent Office
Prior art keywords
formwork
tool
groove
face
shuttering
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
EP91401571A
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German (de)
French (fr)
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EP0462010B1 (en
Inventor
Pierre Longchamp
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.)
Bouygues SA
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Bouygues SA
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Publication date
Priority claimed from FR9007502A external-priority patent/FR2663357B1/en
Priority claimed from FR9103953A external-priority patent/FR2674888B1/en
Application filed by Bouygues SA filed Critical Bouygues SA
Publication of EP0462010A1 publication Critical patent/EP0462010A1/en
Application granted granted Critical
Publication of EP0462010B1 publication Critical patent/EP0462010B1/en
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    • 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
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • 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
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/182—Bulkheads or similar walls made solely of concrete in situ using formworks to separate sections
    • 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
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/185—Bulkheads or similar walls made solely of concrete in situ with flexible joint members between sections
    • 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 invention relates to a device for facilitating the extraction of a vertical formwork used for the production of a concrete wall, said formwork constituting a box having a formwork face facing the molded wall, a back opposite to the formwork face and two lateral sides.
  • the production of a reinforced concrete wall in the ground by means of such formwork consists in digging a vertical excavation, inserting the formwork at the ends of the excavation, introducing the reinforcements of the wall into the excavation and pouring the concrete in the excavation, these operations being repeated in successive successive excavations until the desired wall is produced, for example a cylindrical wall.
  • the object of the present invention is in particular to facilitate this extraction.
  • a device which comprises means for detachably forming in the back of the formwork at least one vertical guide groove open over its entire length in a direction opposite to the shuttering face, and means constituting a formwork tool having a guide part capable of sliding vertically in said groove while being retained in the groove and side knives capable of scraping the lateral sides of the formwork during this sliding, and the device comprising means for controlling the sliding of said tool.
  • the box formwork consisting of a main body 1 forming a box and which has a vertical formwork face provided in the middle with a seal 2 in a manner known per se, a back 1b opposite the formwork face and two lateral sides 3,4 vertical and slightly inclined to facilitate subsequent formwork.
  • two plates 5,6 are detachably fixed on the back of the formwork, for example by bolting, to form between them the opening 7 'of a vertical groove 7.
  • the formwork tool consisting of a thick plate 8 provided with two side edges 9,10 in the form of plates capable of forming knives, the distance from the edges being chosen in correspondence the width of the formwork so that the knives can scrape the sides of the formwork vertically.
  • the tool has in its middle a T-shaped section 11 whose head is capable of sliding vertically in the groove 7 of the formwork while being retained in this groove.
  • the tool is suitable for being fixed to a control means capable of controlling the vertical movement of the tool, for example to the excavation bucket used to carry out the excavation.
  • this bucket has been shown diagrammatically at 12 and the formwork, the tool and the bucket are shown at a distance from each other, for the clarity of the figure, but it will be understood that in service, tool is attached to the bucket to which it is provisionally fixed by any suitable means (for example by keying in rings fixed to the bucket) and, at the desired time, is engaged so that its part 11 slides in the groove 7 while that the knives 9,10 scrape the sides 3,4 of the formwork.
  • any suitable means for example by keying in rings fixed to the bucket
  • Figures 2 and 3 illustrate the following operations: after carrying out a first excavation A, the formwork 1 is put in place (the height of which is preferably greater than the depth of the excavation) and the possible reinforcements of the wall to be constructed then pour the concrete into the excavation. If necessary, the excavation is temporarily consolidated with bentonite or equivalent, before pouring.
  • the next excavation B is carried out by lowering the excavation bucket 12 to which, if necessary, the formwork tool 8-11 has been fixed, the guide part 11 of which has been engaged by the high in the dorsal groove of the formwork.
  • the knives of the tool break the concrete of the excavation A which has possibly bypassed the formwork and which blocks the formwork while the guide 11 retained in the groove 7 holds the tool against the formwork. If the groove becomes obstructed by concrete, dismantling the plates 5,6 gives access to the groove for cleaning.
  • the groove can be temporarily filled with a protective element or material during concreting to avoid any introduction of the concrete into the groove.
  • the formwork can be facilitated by exerting traction towards the vacuum created by the drilling in progress.
  • the formwork is done starting from the foot and going up.
  • Traction can be exerted by a slight closing of the bucket for example.
  • a part or stud 13 similar to the guide stud 11 of the tool can be fixed to a shell of the bucket 12 and introduced into the central groove 7 of the formwork (FIG. 4).
  • the bucket is supported by the top of the hat on the formwork and acts as a lever.
  • the invention is not limited to a number or to a particular groove profile such as 8 and of a guide such as 11.
  • the invention is not limited to the particular device which has been described with reference to FIGS. 1 to 4.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The invention relates to a device for making it easier to extract a vertical shuttering. This apparatus comprises means for forming removably in the back (1b) of the shuttering (1) at least one vertical guide groove (8) open over its entire length in a direction opposite to the shuttering face (1a), and means forming a shuttering-removing tool having a guide part (11) capable of sliding vertically in said groove, whilst being retained in the groove, and lateral knives (9, 10) capable of scraping the lateral sides (3, 4) of the shuttering during sliding, the apparatus comprising means (12) for controlling the sliding of said tool. The invention is used particularly for the shutterings serving for making a trench wall in the ground. <IMAGE>

Description

L'invention concerne un dispositif pour faciliter l'extraction d'un coffrage vertical ayant servi à la réalisation d'une paroi en béton, ledit coffrage constituant un caisson présentant une face coffrante tournée vers la paroi moulée, un dos opposé à la face coffrante et deux côtés latéraux.The invention relates to a device for facilitating the extraction of a vertical formwork used for the production of a concrete wall, said formwork constituting a box having a formwork face facing the molded wall, a back opposite to the formwork face and two lateral sides.

Elle s'applique en particulier à la réalisation d'une paroi moulée en béton armé dans le sol et sera décrite en référence à cette application.It applies in particular to the production of a reinforced concrete diaphragm wall in the ground and will be described with reference to this application.

On connaît diverses réalisations d'un tel coffrage pour la réalisation d'une paroi moulée dans le sol, comme décrit par exemple dans la publication de brevet européen 0 101 350, la publication CH-A-378247, la publication FR-A-2 613 395, la publication FR-A-2 148 706 et autres publications similaires.Various embodiments of such a formwork are known for producing a wall molded into the ground, as described for example in European patent publication 0 101 350, publication CH-A-378247, publication FR-A-2 613 395, publication FR-A-2 148 706 and other similar publications.

La réalisation d'une paroi en béton armé dans le sol au moyen de tels coffrages consiste à creuser une fouille verticale, à insérer le coffrage aux extrémités de la fouille, à introduire dans la fouille les armatures de la paroi et à couler le béton dans la fouille, ces opérations étant répétées dans des fouilles jointives successives jusqu'à réaliser la paroi désirée, par exemple une paroi cylindrique.The production of a reinforced concrete wall in the ground by means of such formwork consists in digging a vertical excavation, inserting the formwork at the ends of the excavation, introducing the reinforcements of the wall into the excavation and pouring the concrete in the excavation, these operations being repeated in successive successive excavations until the desired wall is produced, for example a cylindrical wall.

Pour passer d'une fouille à la suivante, il est nécessaire d'extraire les coffrages qui ont été utilisés dans la première fouille pour le réutiliser dans la première fouille suivante et cette opération d'extraction est souvent difficile, lorsque le béton a fait prise, en sorte que l'on ne peut pas différer cette extraction comme on le voudrait souvent pour éviter de maintenir sur le chantier des équipes de nuit.To go from one excavation to the next, it is necessary to extract the forms that were used in the first excavation to reuse it in the first subsequent excavation and this extraction operation is often difficult, when the concrete has set , so that we cannot postpone this extraction as we would often like to avoid keeping night shifts on site.

La présente invention a notamment pour but de faciliter cette extraction.The object of the present invention is in particular to facilitate this extraction.

On y parvient, selon l'invention, au moyen d'un dispositif qui comporte des moyens pour constituer de façon démontable dans le dos du coffrage au moins une gorge de guidage verticale ouverte sur toute sa longueur dans une direction à l'opposé de la face coffrante, et des moyens constituant un outil de décoffrage présentant une partie de guidage apte à coulisser verticalement dans ladite gorge tout en étant retenue dans la gorge et des couteaux latéraux aptes à râcler les côtés latéraux du coffrage pendant ce coulissement, et le dispositif comportant des moyens pour commander le coulissement dudit outil.This is achieved, according to the invention, by means of a device which comprises means for detachably forming in the back of the formwork at least one vertical guide groove open over its entire length in a direction opposite to the shuttering face, and means constituting a formwork tool having a guide part capable of sliding vertically in said groove while being retained in the groove and side knives capable of scraping the lateral sides of the formwork during this sliding, and the device comprising means for controlling the sliding of said tool.

On décrira ci-après des exemples de réalisation d'un tel dispositif, en référence aux figures du dessin joint, la description et les figures faisant apparaître d'autres particularités de la présente invention.Examples of embodiment of such a device will be described below, with reference to the figures in the accompanying drawing, the description and the figures showing other particular features of the present invention.

Sur les figures :

  • la figure 1 est un schéma du coffrage et du dispositif de l'invention en coupe horizontale ;
  • la figure 2 est un schéma en vue de dessus de deux fouilles jointives successives ;
  • la figure 3 est un schéma des deux fouilles en coupe verticale,
  • la figure 4 est un schéma illustrant l'utilisation de la benne d'excavation pour exercer une traction sur le coffrage ;
  • la figure 5 est une coupe schématique horizontale du caisson de coffrage, relative à un détail de réalisation ;
  • la figure 6 est une coupe schématique verticale locale de l'outil de décoffrage relative à un détail de réalisation ;
  • les figures 7 et 8 sont des coupes horizontales schématiques à deux niveaux A (figure 7) et B (figure 8) de la figure 6, et
  • la figure 9 est une coupe horizontale schématique du dispositif montrant un détail de réalisation.
In the figures:
  • Figure 1 is a diagram of the formwork and the device of the invention in horizontal section;
  • Figure 2 is a diagram from above of two successive excavations;
  • FIG. 3 is a diagram of the two excavations in vertical section,
  • Figure 4 is a diagram illustrating the use of the excavation bucket to exert traction on the formwork;
  • Figure 5 is a schematic horizontal section of the formwork box, relating to an embodiment detail;
  • Figure 6 is a local vertical schematic section of the formwork tool relating to an embodiment;
  • FIGS. 7 and 8 are schematic horizontal sections on two levels A (FIG. 7) and B (FIG. 8) of FIG. 6, and
  • Figure 9 is a schematic horizontal section of the device showing a detail of embodiment.

On a représenté sur la figure 1, en coupe horizontale, le coffrage caisson constitué d'un corps principal 1 formant caisson et qui présente une face coffrante verticale la pourvue en son milieu d'un joint 2 de façon en soi connue, un dos 1b opposé à la face coffrante et deux côtés latéraux 3,4 verticaux et légèrement inclinés pour faciliter le décoffrage ultérieur.Is shown in Figure 1, in horizontal section, the box formwork consisting of a main body 1 forming a box and which has a vertical formwork face provided in the middle with a seal 2 in a manner known per se, a back 1b opposite the formwork face and two lateral sides 3,4 vertical and slightly inclined to facilitate subsequent formwork.

Selon l'invention, deux plaques 5,6 sont fixées de façon démontable sur le dos du coffrage, par exemple par boulonnage, pour constituer entre elles l'ouverture 7' d'une gorge verticale 7.According to the invention, two plates 5,6 are detachably fixed on the back of the formwork, for example by bolting, to form between them the opening 7 'of a vertical groove 7.

On voit également sur la figure 1, en coupe horizontale, l'outil de décoffrage constitué d'une plaque épaisse 8 munie de deux rebords latéraux 9,10 en forme de plaques aptes à constituer des couteaux, la distance des rebords étant choisie en correspondance de la largeur du coffrage pour que les couteaux puissent râcler les côtés du coffrage verticalement.We also see in Figure 1, in horizontal section, the formwork tool consisting of a thick plate 8 provided with two side edges 9,10 in the form of plates capable of forming knives, the distance from the edges being chosen in correspondence the width of the formwork so that the knives can scrape the sides of the formwork vertically.

L'outil présente en son milieu une partie 11 profilée en forme de T dont la tête est apte à coulisser verticalement dans la gorge 7 du coffrage tout en étant retenue dans cette gorge.The tool has in its middle a T-shaped section 11 whose head is capable of sliding vertically in the groove 7 of the formwork while being retained in this groove.

L'outil est apte à être fixé à un moyen de commande capable de commander le déplacement vertical de l'outil, par exemple à la benne d'excavation utilisée pour réaliser la fouille.The tool is suitable for being fixed to a control means capable of controlling the vertical movement of the tool, for example to the excavation bucket used to carry out the excavation.

Sur la figure 1, on a schématisé cette benne en 12 et l'on a représenté le coffrage, l'outil et la benne à distance les uns des autres, pour la clarté de la figure, mais on comprendra qu'en service, l'outil est accolé à la benne à laquelle il est provisoirement fixé par tout moyen quelconque approprié (par exemple par clavetage dans des anneaux fixés à la benne) et, au moment voulu, est engagé pour que sa partie 11 coulisse dans la gorge 7 tandis que les couteaux 9,10 râclent les côtés 3,4 du coffrage.In FIG. 1, this bucket has been shown diagrammatically at 12 and the formwork, the tool and the bucket are shown at a distance from each other, for the clarity of the figure, but it will be understood that in service, tool is attached to the bucket to which it is provisionally fixed by any suitable means (for example by keying in rings fixed to the bucket) and, at the desired time, is engaged so that its part 11 slides in the groove 7 while that the knives 9,10 scrape the sides 3,4 of the formwork.

Les figures 2 et 3 illustrent la suite des opérations : après avoir réalisé une première fouille A, on met en place le coffrage 1 (dont la hauteur est de préférence supérieure à la profondeur de la fouille) et les armatures éventuelles de la paroi à construire puis on coule le béton dans la fouille. Si nécessaire, la fouille est consolidée provisoirement avec de la bentonite ou équivalent, avant le coulage.Figures 2 and 3 illustrate the following operations: after carrying out a first excavation A, the formwork 1 is put in place (the height of which is preferably greater than the depth of the excavation) and the possible reinforcements of the wall to be constructed then pour the concrete into the excavation. If necessary, the excavation is temporarily consolidated with bentonite or equivalent, before pouring.

On réalise ensuite, à tout moment voulu, la fouille suivante B en descendant la benne d'excavation 12 à laquelle, si nécessaire, on a fixé l'outil de décoffrage 8-11, dont la partie de guidage 11 a été engagée par le haut dans la gorge dorsale du coffrage. Les couteaux de l'outil brisent le béton de la fouille A qui a éventuellement contourné le coffrage et qui bloque le coffrage tandis que le guide 11 retenu dans la gorge 7 maintient l'outil contre le coffrage. Si la gorge vient à être obstruée par le béton, le démontage des plaques 5,6 donne accès à la gorge pour son nettoyage.Then, at any desired time, the next excavation B is carried out by lowering the excavation bucket 12 to which, if necessary, the formwork tool 8-11 has been fixed, the guide part 11 of which has been engaged by the high in the dorsal groove of the formwork. The knives of the tool break the concrete of the excavation A which has possibly bypassed the formwork and which blocks the formwork while the guide 11 retained in the groove 7 holds the tool against the formwork. If the groove becomes obstructed by concrete, dismantling the plates 5,6 gives access to the groove for cleaning.

Eventuellement, la gorge peut être provisoirement remplie par un élément ou matériau protecteur pendant le bétonnage pour éviter toute introduction du béton dans la gorge.Optionally, the groove can be temporarily filled with a protective element or material during concreting to avoid any introduction of the concrete into the groove.

Le décoffrage peut être facilité en exerçant une traction vers le vide créé par le forage en cours. Dans ce cas, le décoffrage se fait en partant du pied et en remontant.The formwork can be facilitated by exerting traction towards the vacuum created by the drilling in progress. In this case, the formwork is done starting from the foot and going up.

La traction peut être exercée par une légère fermeture de la benne par exemple. Pour ce faire, une partie ou téton 13 similaire au téton de guidage 11 de l'outil peut être fixée sur une coquille de la benne 12 et introduite dans la rainure centrale 7 du coffrage (figure 4).Traction can be exerted by a slight closing of the bucket for example. To do this, a part or stud 13 similar to the guide stud 11 of the tool can be fixed to a shell of the bucket 12 and introduced into the central groove 7 of the formwork (FIG. 4).

La benne prend appui par le sommet du chapeau sur le coffrage et agit comme un levier.The bucket is supported by the top of the hat on the formwork and acts as a lever.

L'invention n'est pas limitée à un nombre ni à un profil particulier de gorge telle que 8 et de guide tel que 11.The invention is not limited to a number or to a particular groove profile such as 8 and of a guide such as 11.

L'invention n'est pas limitée au dispositif particulier qui a été décrit en référence aux figures 1 à 4.The invention is not limited to the particular device which has been described with reference to FIGS. 1 to 4.

Ainsi, dans des variantes de réalisation représentées sur les figures 5 à 9, le dispositif présente encore une ou plusieurs des caractéristiques suivantes :

  • un tube 14 est introduit temporairement dans la gorge 7 du caisson de coffrage 1 (figure 5). Ce tube a des dimensions choisies pour remplir la gorge et éviter l'encrassement de la gorge au cours du creusement du forage et il est réalisé dans un matériau tel que l'outil de décoffrage (8-11) puisse facilement découper progressivement le tube, au fur et à mesure de sa progression. Le tube est par exemple en polychlorure de vinyle,
  • l'outil de décoffrage (8-11) comporte sous le téton 11 un doigt 15 (figures 6-8), par exemple en forme de couteau, apte à pénétrer dans l'ouverture 7' de la gorge 7 (sans y être prisonnier) pour guider longitudinalement l'outil et découper le tube 14,
  • l'outil de décoffrage (8-11) comporte, de part et d'autre du téton, à toute hauteur désirée, des roulettes 16 (figure 9) aptes à rouler contre la face en regard du caisson de coffrage pour maintenir l'outil à distance contrôlée de cette face, ce qui est utile notamment quand l'outil est du type fraise,
  • la face plane du coffrage est revêtue d'une protection constituée d'un revêtement non ferreux (17), par exemple en matière plastique, pour éviter un contact direct entre l'outil de creusement et le métal du coffrage.
Thus, in alternative embodiments shown in FIGS. 5 to 9, the device still has one or more of the following characteristics:
  • a tube 14 is temporarily introduced into the groove 7 of the formwork box 1 (FIG. 5). This tube has dimensions chosen to fill the groove and prevent fouling of the groove during the digging of the borehole and it is made of a material such that the formwork removal tool (8-11) can easily gradually cut the tube, as it progresses. The tube is for example made of polyvinyl chloride,
  • the stripping tool (8-11) has a finger 15 under the stud 11 (Figures 6-8), for example in the form of a knife, capable of penetrating into the opening 7 'of the groove 7 (without being trapped there ) to guide the tool longitudinally and cut the tube 14,
  • the formwork tool (8-11) comprises, on either side of the stud, at any desired height, rollers 16 (FIG. 9) capable of rolling against the opposite face of the formwork box to hold the tool remotely controlled from this face, which is useful especially when the tool is of the cutter type,
  • the flat face of the formwork is coated with a protection consisting of a non-ferrous coating (17), for example of plastic, to avoid direct contact between the digging tool and the metal of the formwork.

Claims (14)

1. Dispositif pour faciliter l'extraction d'un coffrage vertical ayant servi à la réalisation d'une paroi en béton, ledit coffrage constituant un caisson présentant une face coffrante tournée vers la paroi moulée, un dos opposé à la face coffrante et deux côtés latéraux, ce dispositif comportant des moyens pour constituer de façon démontable dans le dos (1b) du coffrage (1) au moins une gorge de guidage verticale (7) ouverte sur toute sa longueur dans une direction à l'opposé de la face coffrante (1a), et des moyens constituant un outil de décoffrage présentant une partie de guidage (11) apte à coulisser verticalement dans ladite gorge tout en étant retenue prisonnière dans la gorge et des couteaux latéraux (9,10) aptes à râcler les côtés latéraux (3,4) du coffrage pendant ce coulissement, et le dispositif comportant des moyens (12) pour commander le coulissement dudit outil. 1. Device to facilitate the extraction of a vertical formwork used for the production of a concrete wall, said formwork constituting a box having a formwork face turned towards the molded wall, a back opposite to the formwork face and two sides lateral, this device comprising means for detachably forming in the back (1b) of the formwork (1) at least one vertical guide groove (7) open over its entire length in a direction opposite to the formwork face ( 1a), and means constituting a formwork tool having a guide part (11) capable of sliding vertically in said groove while being held captive in the groove and side knives (9,10) capable of scraping the lateral sides ( 3,4) of the formwork during this sliding, and the device comprising means (12) for controlling the sliding of said tool. 2. Dispositif selon la revendication 1, caractérisé en ce que ladite partie de guidage (11) de l'outil de décoffrage est un profilé à section droite en forme de T. 2. Device according to claim 1, characterized in that said guide part (11) of the formwork tool is a section with a T-shaped cross section. 3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que les deux couteaux latéraux (9,10) dudit outil de décoffrage sont des parois planes. 3. Device according to one of claims 1 and 2, characterized in that the two side knives (9,10) of said formwork tool are planar walls. 4. Dispositif selon la revendication 3, caractérisé en ce que lesdites parois planes sont reliées à une paroi transversale (8) pourvue en son milieu de ladite partie de guidage (11). 4. Device according to claim 3, characterized in that said planar walls are connected to a transverse wall (8) provided in the middle of said guide portion (11). 5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les moyens pour constituer ladite gorge comprennent deux plaques démontables (5,6) fixées en vis-à-vis dans un même plan au dos du coffrage pour constituer entre elles l'ouverture (7') de ladite gorge (7). 5. Device according to one of claims 1 to 4, characterized in that the means for constituting said groove comprise two removable plates (5,6) fixed vis-à-vis in the same plane on the back of the formwork to constitute between they the opening (7 ') of said groove (7). 6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le moyen de commande comporte une partie (13) apte à être introduite dans ladite gorge (7). 6. Device according to one of claims 1 to 5, characterized in that the control means comprises a part (13) adapted to be introduced into said groove (7). 7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que ladite gorge de guidage verticale (7) du coffrage est remplie provisoirement par un tube (14) apte à être découpé par l'outil de décoffrage (8-11). 7. Device according to one of claims 1 to 6, characterized in that said vertical guide groove (7) of the formwork is temporarily filled by a tube (14) capable of being cut by the formwork tool (8-11 ). 8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que ledit outil de décoffrage (8-11) comporte sous ladite partie de guidage (11) un doigt (15) apte à être introduit dans l'ouverture (7') de la gorge (7) du coffrage sans être prisonnier de la gorge. 8. Device according to one of claims 1 to 7, characterized in that said stripping tool (8-11) comprises under said guide portion (11) a finger (15) adapted to be introduced into the opening (7 ') of the throat (7) of the formwork without being trapped in the throat. 9. Dispositif selon les revendications 7 et 8, caractérisé en ce que ledit doigt (15) est en forme de couteau pour découper ledit tube (14). 9. Device according to claims 7 and 8, characterized in that said finger (15) is in the form of a knife for cutting said tube (14). 10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que l'outil de décoffrage (8-11) comporte, de part et d'autre de ladite partie de guidage (11), à toute hauteur désirée, des roulettes (16) aptes à rouler contre la face en regard du coffrage. 10. Device according to one of claims 1 to 9, characterized in that the stripping tool (8-11) comprises, on either side of said guide portion (11), at any desired height, rollers (16) capable of rolling against the face opposite the formwork. 11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que la face du coffrage qui est en regard de l'outil de décoffrage (8-11) comporte un revêtement non-ferreux. 11. Device according to one of claims 1 to 10, characterized in that the face of the formwork which is opposite the formwork tool (8-11) comprises a non-ferrous coating. 12. Outil de décoffrage tel que défini dans l'une des revendications 1 à 11. 12. Stripping tool as defined in one of claims 1 to 11. 13. Application d'un dispositif selon l'une des revendications 1 à 11 et/ou d'un outil de décoffrage selon la revendication 12, à la réalisation d'une paroi moulée dans le sol. 13. Application of a device according to one of claims 1 to 11 and / or of a formwork removal tool according to claim 12, in the production of a wall molded in the ground. 14. Application selon la revendication 13, caractérisée en ce que lesdits moyens de commande sont une benne d'excavation (12) ou une fraise à laquelle ledit outil est fixé de façon provisoire. 14. Application according to claim 13, characterized in that said control means are an excavation bucket (12) or a cutter to which said tool is provisionally fixed.
EP91401571A 1990-06-15 1991-06-13 ypparatus to facilitate extraction of a shuttering, and use in making a trench wall in the ground. Expired - Lifetime EP0462010B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9007502A FR2663357B1 (en) 1990-06-15 1990-06-15 DEVICE FOR FACILITATING THE EXTRACTION OF A FORMWORK, TOOL PRESENT IN THE DEVICE AND APPLICATION TO THE PRODUCTION OF A MOLDED WALL IN THE GROUND.
FR9007502 1990-06-15
FR9103953 1991-04-02
FR9103953A FR2674888B1 (en) 1991-04-02 1991-04-02 DEVICE FOR FACILITATING THE EXTRACTION OF A FORMWORK, TOOL PRESENT IN THE DEVICE AND APPLICATION TO THE PRODUCTION OF A MOLDED WALL IN THE GROUND.

Publications (2)

Publication Number Publication Date
EP0462010A1 true EP0462010A1 (en) 1991-12-18
EP0462010B1 EP0462010B1 (en) 1995-03-01

Family

ID=26228083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401571A Expired - Lifetime EP0462010B1 (en) 1990-06-15 1991-06-13 ypparatus to facilitate extraction of a shuttering, and use in making a trench wall in the ground.

Country Status (5)

Country Link
EP (1) EP0462010B1 (en)
AT (1) ATE119228T1 (en)
DE (1) DE69107696T2 (en)
ES (1) ES2070454T3 (en)
HK (1) HK101596A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004782A1 (en) * 1996-07-31 1998-02-05 Gammon Finance Ltd. - Kvaerner Construction International Ltd. Improved stop-end system for use in diaphragm wall construction
FR2791072A1 (en) * 1999-03-19 2000-09-22 Sol Comp Du DEVICE FOR AIDING FORMWORK

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL113163C (en) * 1900-01-01
US3513572A (en) * 1967-09-01 1970-05-26 Stang Cofor Inc Excavating apparatus for digging trenches
EP0048444A2 (en) * 1980-09-19 1982-03-31 Robert Pföderl Method and shuttering element for producing slit walls in the ground
EP0101350A1 (en) * 1982-08-11 1984-02-22 Sondages Injections Forages "S.I.F." Entreprise Bachy Method and device for pulling out a shuttering at the realization of an underground cast wall
CH665241A5 (en) * 1987-01-28 1988-04-29 Zschokke Sa Conrad Wall-casting system in ground - uses end shuttering walls in sections aligned and clamped together beforehand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL113163C (en) * 1900-01-01
US3513572A (en) * 1967-09-01 1970-05-26 Stang Cofor Inc Excavating apparatus for digging trenches
EP0048444A2 (en) * 1980-09-19 1982-03-31 Robert Pföderl Method and shuttering element for producing slit walls in the ground
EP0101350A1 (en) * 1982-08-11 1984-02-22 Sondages Injections Forages "S.I.F." Entreprise Bachy Method and device for pulling out a shuttering at the realization of an underground cast wall
CH665241A5 (en) * 1987-01-28 1988-04-29 Zschokke Sa Conrad Wall-casting system in ground - uses end shuttering walls in sections aligned and clamped together beforehand

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998004782A1 (en) * 1996-07-31 1998-02-05 Gammon Finance Ltd. - Kvaerner Construction International Ltd. Improved stop-end system for use in diaphragm wall construction
FR2791072A1 (en) * 1999-03-19 2000-09-22 Sol Comp Du DEVICE FOR AIDING FORMWORK
EP1039038A1 (en) * 1999-03-19 2000-09-27 Compagnie Du Sol Form removal apparatus aid
US6332297B1 (en) 1999-03-19 2001-12-25 Compagnie Du Sol Device for facilitating the removal of formwork

Also Published As

Publication number Publication date
DE69107696T2 (en) 1995-06-29
EP0462010B1 (en) 1995-03-01
ES2070454T3 (en) 1995-06-01
ATE119228T1 (en) 1995-03-15
DE69107696D1 (en) 1995-04-06
HK101596A (en) 1996-06-21

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