EP0688907B1 - Apparatus and method for the construction of a concrete trench wall - Google Patents
Apparatus and method for the construction of a concrete trench wall Download PDFInfo
- Publication number
- EP0688907B1 EP0688907B1 EP19950401496 EP95401496A EP0688907B1 EP 0688907 B1 EP0688907 B1 EP 0688907B1 EP 19950401496 EP19950401496 EP 19950401496 EP 95401496 A EP95401496 A EP 95401496A EP 0688907 B1 EP0688907 B1 EP 0688907B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- trench
- front wall
- reinforcement
- wall
- 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
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
Definitions
- the present invention relates to the execution of a veil in concrete in a trench, as the excavation of the trench.
- the present invention aims to provide a device which not only protects the digging tool well against the introduction of concrete into the tool, but also to realize a veil of very good qualities.
- the front wall is provided in its part upper of an upper skirt extending between the walls rear side, in order to avoid overflow of the concrete during its injection under pressure.
- the invention also relates to a method for carrying out continuous of a concrete veil, in which a device as defined according to the present invention is used and characterized in that a concrete having a compressive strength of at least 100 bar and a tensile strength of at least 100 bar and prestressed concrete in the trench.
- FIG 1 there is shown in Figure 1, in top view, a device 1 according to the invention, in place in a trench T in running.
- A the digging zone
- B the excavated area
- F the direction of progression of the device in the trench
- the device 1 is placed in the excavated area B and includes an element 10 to be moved in the trench, downstream which is produced a concrete veil V.
- This veil is for example a retaining veil provisional or final intended for a building, etc ...
- Element 10 which is moved from back to front in the trench according to arrow F by any drive means suitable known to those skilled in the art, includes a formwork consisting of a rigid front wall 12, followed by two walls rigid rear side panels 11 extended by rear skirts flexible 13 shaped to apply elastically, so generally waterproof, on the side walls L of the trench.
- the front wall 12 is generally flat and perpendicular to a vertical plane containing the direction F, and the rear side walls 11 extend parallel to each other and to the side walls L of the trench, and perpendicular to the front wall 12.
- the formwork constituted by the front wall 12 and the walls rear side 11 thus has a U-shaped section, shaped the dimensions and profile of the dug trench, as shown in Figures 1 and 2.
- the concavity of the U is rotated rearward.
- Rigid side walls are extended rearward by rear skirts 13, constituted for example by bands of elastomer fixed by a portion of their width on the sides respective interiors of the rigid side walls 11 and the free portion of their width extends outward to contact the trench.
- metal strips, or other PVC, .
- the rear skirts 13 extend, as shown in the Figure 2, over the entire height of the rigid side walls 11 in case the front wall is used vertically.
- the front wall 12 is extended downwards by a skirt lower 14 shaped to be applied to the bottom of the trench T.
- the rear skirts 13 and the lower skirt 14 close, sufficiently tight, the space between the wall before 12, the rigid side walls 1 1 and the surfaces lateral and the bottom of the trench, so that the injection of pressurized concrete in the formwork formed by the walls rigid side 11 and the front wall does not cause any leakage concrete in the area before digging.
- Concrete injection preferably takes place near the front wall 12 and in its median plane. It is performed in the example described by means of a tube 20 attached to the wall front 12, extending over the entire height thereof and provided orifices 22 and 23 opening respectively at the end lower 21 of the tube 20, near the lower edge 21 of the front wall 12, and at a point located in the lower part of the front wall 12.
- the tube 20 is connected in a manner known per se to its upper end 24 to a concrete feeder under pressure known in itself and not shown.
- This upper skirt 16 is positioned preferably horizontal when using the device and defines the upper surface of the veil to be executed. Thanks to the presence of this upper skirt 16, the concrete can be injected under high pressure in the trench without risk of overflow; the length of the skirt 16 will be chosen in particular depending on the forward speed, the injection rate of the concrete and its setting time.
- the upper skirt 16 is connected to the upper edge horizontal of the front wall 12 with a possibility of adjustment in rotation around this upper edge, so as to allow a horizontal positioning of the upper skirt 16 when the front wall 12 is inclined in the direction of travel F, as shown in Figure 3.
- the skirts rear 13 are then preferably extended downwards beyond of the formwork element 10, so as to best ensure sealing between the front digging area and the rear area concrete injection.
- the drive of the formwork element is made by means of an arm fixed on the front wall 12 on the opposite side to the rear side walls 11 and articulated at its upper part to allow adjustment of the inclination of the formwork.
- the inclined position of the front wall 12 allows resistance to the effects of pressure at the bottom of the trench, which tend to drive out the formwork element by tilting it in the direction anti-clockwise in FIG. 3.
- the resistance of the device 1 to the concrete thrust is improved if the lower skirt 14 is friction hold on the bottom of the trench, if necessary using brake teeth 17 projecting from its face higher (or lower as a variant) and making it possible to oppose additional resistance.
- the material used to dig the trench is also used to drive the formwork element. he can be a slicer 30 as shown in the figure 4. The effectiveness of the latter is then improved by the effect of the aforementioned plating.
- the aforementioned drive arm, referenced 40 in the figure 4, is advantageously mounted for rotation about an axis horizontal articulation at the rear of a support structure 31 integral with the trencher 30, so as to allow the positioning in the desired inclination of the front wall 12.
- the structure 31 carries digging means 32 known in themselves and not shown in detail.
- the front wall is tilted 10 ° or more towards the front with respect to the vertical, in order to counteract the concrete pushing efforts at the bottom of the trench on the wall before, increasing the support force on the bottom of the trench of the formwork element.
- concrete used in the description, must broadly understood as also referring to everything material of high mechanical resistance, for example concrete fiber reinforced.
- the invention recommends inject concrete into the formwork capable of resistance to compression of at least 100 bar and resistance to tension of at least 100 bar, and prestress vertically this concrete in the trench.
- concrete is chosen from fiber concrete or so-called reactive powder concretes. Resistance to concrete compression can be significantly greater than 100 bars, but in the majority of cases it appears sufficient use concrete with compressive strength in the range 100 - 300 bars.
- the concrete is prestressed by introducing place in place in the concrete that has just been injected vertical frames (50) which are sheathed (51) to be preserved from contact with concrete except for their lower ends (52) suitable for serving as anchors in the concrete at the bottom of the trench and their upper ends (53) capable of being used to tension the reinforcements so known per se (nuts, distribution plates, etc.), the reinforcements are for example cables or straight bars or bent at their lower end.
- these frames are placed from place to place in the vertical median plane of the trench, as the progress of the work and they are temporarily maintained by any appropriate means (54).
- the invention makes it possible for example to produce walls molded noticeably thinner than the walls obtained conventionally but with performance at least equivalent.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lining And Supports For Tunnels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
La présente invention concerne l'exécution d'un voile en béton dans une tranchée, au fur et à mesure du creusement de la tranchée.The present invention relates to the execution of a veil in concrete in a trench, as the excavation of the trench.
On connait (WO-A-88 06208) un dispositif qui comprend un
élément à déplacer dans la tranchée à la suite de l'outil de
creusement, cet élément étant conçu pour établir une étanchéíté
entre une zone avant où fonctionne l'outil de creusement et une
zone arrière où le béton est introduit dans la tranchée
précédemment creusée par cet outil. Plus précisément, ce dispositif est tel que défini dans le préambule de la revendication 1.There is known (WO-A-88 06208) a device which comprises a
element to be moved in the trench following the tool
excavation, this element being designed to establish a seal
between a front zone where the digging tool works and a
rear area where concrete is introduced into the trench
previously excavated by this tool. More specifically, this device is as defined in the preamble of
La présente invention vise à fournir un dispositif qui permette non seulement de bien protéger l'outil de creusement contre l'introduction de béton dans l'outil, mais aussi de réaliser un voile de très bonnes qualités.The present invention aims to provide a device which not only protects the digging tool well against the introduction of concrete into the tool, but also to realize a veil of very good qualities.
On y parvient selon l'invention avec un dispositif tel que défini dans la revendication 1.This is achieved according to the invention with a device as defined in
Un tel élément protège parfaitement le béton de la tranchée contre les éboulements éventuels de la paroi de la tranchée et assure une qualité de voile exceptionnelle.Such an element perfectly protects the concrete from trench against possible landslides of the wall of the cut and ensures exceptional sail quality.
Avantageusement, la paroi avant est munie à sa partie supérieure d'une jupe supérieure s'étendant entre les parois latérales arrière, afin d'éviter le débordement du béton lors de son injection sous pression. Advantageously, the front wall is provided in its part upper of an upper skirt extending between the walls rear side, in order to avoid overflow of the concrete during its injection under pressure.
L'invention a aussi pour objet un procédé pour l'exécution en continu d'un voile de béton, dans lequel on met en oeuvre un dispositif tel que défini selon la présente invention et caractérisé en ce qu'on utilise un béton présentant une résistance à la compression d'au moins 100 bars et une résistance à la traction d'au moins 100 bars et on précontraint le béton dans la tranchée.The invention also relates to a method for carrying out continuous of a concrete veil, in which a device as defined according to the present invention is used and characterized in that a concrete having a compressive strength of at least 100 bar and a tensile strength of at least 100 bar and prestressed concrete in the trench.
D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description qui va suivre, d'un exemple de réalisation non limitatif de l'invention, et au vu du dessin annexé sur lequel :
- la figure 1 est une vue de dessus, schématique, d'un voile en cours de réalisation au moyen d'un dispositif selon l'invention,
- la figure 2 est une vue en coupe verticale dans le plan de coupe II-II de la figure 1, l'élément de coffrage étant représenté en position verticale,
- la figure 3 est une vue en coupe verticale dans le plan de coupe II-II de la figure 1, l'élément de coffrage étant représenté en position inclinée, et
- la figure 4 représente schématiquement le dispositif selon l'invention monté à l'arrière d'une trancheuse.
- FIG. 1 is a schematic top view of a sail in progress by means of a device according to the invention,
- FIG. 2 is a view in vertical section in the section plane II-II of FIG. 1, the shuttering element being shown in the vertical position,
- FIG. 3 is a view in vertical section in the section plane II-II of FIG. 1, the formwork element being shown in an inclined position, and
- FIG. 4 schematically represents the device according to the invention mounted at the rear of a slicer.
On a représenté sur la figure 1, en vue de dessus, un
dispositif 1 selon l'invention, en place dans une tranchée T en
cours d'exécution. On a référencé A la zone de creusement et B la
zone excavée, le sens de progression du dispositif dans la
tranchée étant donné par la flèche F.There is shown in Figure 1, in top view, a
Le dispositif 1 est placé dans la zone excavée B et
comporte un élément 10 à déplacer dans la tranchée, en aval
duquel est réalisé un voile V de béton.The
Ce voile est par exemple un voile de soutènement provisoire ou définitif destiné à un bâtiment, etc....This veil is for example a retaining veil provisional or final intended for a building, etc ...
L'élément 10, qui est déplacé de l'arrière vers l'avant dans
la tranchée selon la flèche F par tout moyen d'entraínement
approprié connu de l'homme du métier, comprend un coffrage
constitué d'une paroi avant rigide 12, suivie de deux parois
latérales arrière rigides 11 prolongées par des jupes arrière
souples 13 conformées pour s'appliquer élastiquement, de façon
généralement étanche, sur les parois latérales L de la tranchée.
La paroi avant 12 est généralement plane et
perpendiculaire à un plan vertical contenant la direction
d'avancement F, et les parois latérales arrière 11 s'étendent
parallèlement entre elles et aux parois latérales L de la
tranchée, et perpendiculairement à la paroi avant 12.The
Le coffrage constitué par la paroi avant 12 et les parois
latérales arrière 11 présente ainsi une section en U, conformée
aux dimensions et au profil de la tranchée creusée, comme
représenté sur les figures 1 et 2. La concavité du U est tournée
vers l'arrière.The formwork constituted by the
Les parois latérales rigides sont prolongées vers l'arrière
par des jupes arrière 13, constituées par exemple par des bandes
d'élastomère fixées par une portion de leur largeur sur les côtés
intérieurs respectifs des parois latérales rigides 11 et dont la
portion libre de leur largeur s'étend vers l'extérieur pour
contacter la tranchée. On peut naturellement les remplacer, sans
sortir du cadre de la présente invention, par des bandes de métal,
ou autre (PVC, ...).Rigid side walls are extended rearward
by
Les jupes arrière 13 s'étendent, comme représenté sur la
figure 2, sur toute la hauteur des parois latérales rigides 11
dans le cas où la paroi avant est utilisée verticalement. The
La paroi avant 12 est prolongée vers le bas par une jupe
inférieure 14 conformée pour s'appliquer sur le fond de la
tranchée T.The
Les jupes arrière 13 et la jupe inférieure 14 ferment, de
façon suffisamment étanche, l'espace compris entre la paroi
avant 12, les parois latérales rigides 1 1 et les surfaces
latérales et le fond de la tranchée, de sorte que l'injection de
béton sous pression dans le coffrage constitué par les parois
latérales rigides 11 et la paroi avant n'entraíne aucune fuite de
béton dans la zone avant de creusement.The
L'injection de béton a lieu de préférence à proximité de la
paroi avant 12 et dans son plan médian. Elle est effectuée dans
l'exemple décrit au moyen d'un tube 20 rapporté sur la paroi
avant 12, s'étendant sur toute la hauteur de celle-ci et muni
d'orifices 22 et 23 débouchant respectivement à l'extrémité
inférieure 21 du tube 20, à proximité du bord inférieur 21 de la
paroi avant 12, et en un point situé en partie inférieure
de la paroi avant 12.Concrete injection preferably takes place near the
Le tube 20 est raccordé de façon connue en soi à son
extrémité supérieure 24 à un dispositif d'alimentation en béton
sous pression connu en lui-même et non représenté.The
L'amenée du béton sous forte pression entre les parois
latérales arrière 11 aurait pour effet de provoquer un
débordement du béton par le haut hors de la tranchée s'il n'était
prévu une jupe supérieure 16 de confinement du béton entre les
parois latérales. Cette jupe supérieure 16 est positionnée de
préférence à l'horizontal lors de l'utilisation du dispositif et
définit la surface supérieure du voile à exécuter. Grâce à la
présence de cette jupe supérieure 16, le béton peut être injecté
sous une pression élevée dans la tranchée sans risque de
débordement ; la longueur de la jupe 16 sera notamment choisie
en fonction de la vitesse d'avancement, du débit d'injection du
béton et de son temps de prise.Bringing concrete under high pressure between the walls
La jupe supérieure 16 est reliée au bord supérieur
horizontal de la paroi avant 12 avec une possibilité de réglage en
rotation autour de ce bord supérieur, de manière à permettre un
positionnement horizontal de la jupe supérieure 16 lorsque la
paroi avant 12 est inclinée dans le sens d'avancement F, comme
représenté sur la figure 3. Dans cette position inclinée
d'utilisation du dispositif, qui est adoptée lorsque la tranchée
est profonde, comme cela est expliqué dans la suite, les jupes
arrière 13 sont alors, de préférence, prolongées vers le bas au-delà
de l'élément de coffrage 10, de manière à assurer au mieux
l'étanchéité entre la zone avant de creusement et la zone arrière
d'injection du béton.The
De préférence, l'entraínement de l'élément de coffrage se
fait au moyen d'un bras fixé sur la paroi avant 12 du côté opposé
aux parois latérales arrière 11 et articulé à sa partie supérieure
pour permettre un réglage de l'inclinaison de l'élément de
coffrage.Preferably, the drive of the formwork element is
made by means of an arm fixed on the
La position inclinée de la paroi avant 12 permet de résister
aux effets de la pression en fond de tranchée, qui tendent à
chasser l'élément de coffrage en le faisant basculer dans le sens
anti-horaire sur la figure 3. La résistance du dispositif 1 à la
poussée du béton est améliorée si la jupe inférieure 14 est
retenue par frottement sur le fond de la tranchée, si nécessaire
à l'aide de dents de freinage 17 formant saillie sur sa face
supérieure (ou inférieure en variante) et permettant d'opposer
une résistance supplémentaire.The inclined position of the
La pression du béton crée, puisque la jupe inférieure 14
empêche le basculement de la paroi avant dans le sens anti-horaire
sur la figure 3, un effort sur le bras d'entraínement de
l'élément de coffrage tendant à plaquer au sol le matériel utilisé
pour déplacer le bras.The pressure of the concrete creates, since the
Avantageusement, le matériel utilisé pour creuser la
tranchée sert également à entraíner l'élément de coffrage. Il
peut s'agir d'une trancheuse 30 comme représenté sur la figure
4. L'efficacité de cette dernière est alors améliorée par l'effet
de plaquage précité.Advantageously, the material used to dig the
trench is also used to drive the formwork element. he
can be a
Le bras d'entraínement précité, référencé 40 sur la figure
4, est avantageusement monté à rotation autour d'un axe
d'articulation horizontal à l'arrière d'une structure porteuse 31
solidaire de la trancheuse 30, de manière à permettre le
positionnement dans l'inclinaison voulue de la paroi avant 12. La
structure 31 porte des moyens de creusement 32 connus en eux-mêmes
et non représentés en détail.The aforementioned drive arm, referenced 40 in the figure
4, is advantageously mounted for rotation about an axis
horizontal articulation at the rear of a
Le fonctionnement du dispositif selon l'invention, associé à une trancheuse, est le suivant.The operation of the device according to the invention, associated to a slicer, is as follows.
A mesure de l'avancement de la trancheuse 30 et de
l'élément de coffrage 10, du béton est injecté entre les parois
latérales rigides 11 par le tube 20 et le voile V est ainsi exécuté
en continu sans risque de contamination du béton liquide par des
éboulements de la tranchée, puisque la mise en place du béton
dans cette dernière s'effectue à l'abri de l'élément de coffrage
10.As the
Lorsque la tranchée est peu profonde, il n'est pas
nécessaire d'incliner l'élément de coffrage pour résister aux
forces de poussée exercées par le béton en fond de tranchée sur
la paroi avant 12.When the trench is shallow, it is not
necessary to tilt the formwork element to resist
thrust forces exerted by concrete at the bottom of the trench on
the
Par contre, pour des profondeurs de l'ordre de la dizaine de mètres ou plus, et pour bénéficier de l'effet de plaquage précité, on donne à la paroi avant une inclinaison de 10° ou plus vers l'avant par rapport à la verticale, afin de contrecarrer les efforts de poussée du béton en fond de tranchée sur la paroi avant, en augmentant la force d'appui sur le fond de la tranchée de l'élément de coffrage.On the other hand, for depths of the order of ten meters or more, and to benefit from the aforementioned tackling effect, the front wall is tilted 10 ° or more towards the front with respect to the vertical, in order to counteract the concrete pushing efforts at the bottom of the trench on the wall before, increasing the support force on the bottom of the trench of the formwork element.
Le terme "béton", utilisé dans la description, doit s'entendre de façon large comme désignant également tout matériau de résistance mécanique élevée, par exemple un béton renforcé par fibres.The term "concrete", used in the description, must broadly understood as also referring to everything material of high mechanical resistance, for example concrete fiber reinforced.
Dans un mode de réalisation préféré, l'invention préconise d'injecter dans le coffrage un béton capable d'une résistance à la compression d'au moins 100 bars et d'une résistance à la traction d'au moins 100 bars, et de précontraindre verticalement ce béton dans la tranchée. In a preferred embodiment, the invention recommends inject concrete into the formwork capable of resistance to compression of at least 100 bar and resistance to tension of at least 100 bar, and prestress vertically this concrete in the trench.
On choisit par exemple le béton parmi les bétons de fibres ou les bétons dits de poudre réactive. La résistance à la compression du béton peut être notablement supérieure à 100 bars, mais dans la majorité des cas, il apparaít suffisant d'utiliser un béton ayant une résistance à la compression dans la gamme 100 - 300 bars.For example, concrete is chosen from fiber concrete or so-called reactive powder concretes. Resistance to concrete compression can be significantly greater than 100 bars, but in the majority of cases it appears sufficient use concrete with compressive strength in the range 100 - 300 bars.
De préférence, on précontraint le béton en introduisant de place en place dans le béton qui vient d'être injecté des armatures verticales (50) qui sont gaínées (51) pour être préservées du contact avec le béton à l'exception de leurs extrémités inférieures (52) aptes à servir d'ancrages dans le béton au fond de la tranchée et de leurs extrémités supérieures (53) aptes à être sollicitées pour tendre les armatures de façon en soi connue (écrous, plaques de répartition, etc...), les armatures sont par exemble des câbles ou des barres rectilignes ou recourbés à leur extrémité inférieure.Preferably, the concrete is prestressed by introducing place in place in the concrete that has just been injected vertical frames (50) which are sheathed (51) to be preserved from contact with concrete except for their lower ends (52) suitable for serving as anchors in the concrete at the bottom of the trench and their upper ends (53) capable of being used to tension the reinforcements so known per se (nuts, distribution plates, etc.), the reinforcements are for example cables or straight bars or bent at their lower end.
De préférence, on dispose ces armatures de place en place dans le plan médian vertical de la tranchée, au fur et à mesure de l'avancement de l'ouvrage et on les maintient provisoirement par tout moyen approprié (54).Preferably, these frames are placed from place to place in the vertical median plane of the trench, as the progress of the work and they are temporarily maintained by any appropriate means (54).
La combinaison du coffrage, du choix du béton et des armatures précontraintes permet d'obtenir des résultats et des avantages très supérieurs à ceux obtenus avec le matériel connu et des bétons ordinaires, mêmes renforcés par des armatures passives.The combination of formwork, choice of concrete and prestressed reinforcement provides results and advantages far superior to those obtained with known equipment and ordinary concrete, even reinforced with reinforcements passive.
L'invention permet par exemple de réaliser des parois moulées sensiblement moins épaisses que les parois obtenues classiquement mais présentant des performances au moins équivalentes.The invention makes it possible for example to produce walls molded noticeably thinner than the walls obtained conventionally but with performance at least equivalent.
Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit. On peut remplacer la trancheuse par d'autres matériels d'excavation connus, ou simplement monter le dispositif à l'arrière d'un tracteur dans une tranchée préalablement creusée.Of course, the invention is not limited to the example of realization described. You can replace the slicer with others known excavation equipment, or simply mount the device at the rear of a tractor in a trench previously dug.
Claims (10)
- Apparatus for constructing a concrete wall in a trench as the trench is being dug, the apparatus comprising an element (10) fixed at the back of the machine (30) which includes the digging tool so to be moved along the trench behind the digging tool, said element being designed to provide sealing between a front zone (A) in which the digging tool operates and a rear zone (B) in which concrete is inserted into the trench (T) previously dug by the tool, the element comprising a rigid front wall (12), a skirt (14) which extends said rigid wall downwards and which is shaped to bear against the bottom of the trench, and side skirts (13) shaped to bear resiliently against the side walls of the trench, the apparatus being characterized in that said element comprises, between said front wall (12) and said side skirts (13), rigid side walls(11) which extend parallel to each other perpendicularly to the front wall and which co-operate with said front wall to constitute shuttering in which sealing is provided by the front wall and by said skirts, means being provided to inject liquid concrete under pressure into the shuttering from close to the bottom portion of the front wall so that concrete is put into the trench without any risk of the liquid concrete being contaminated by falling-in from the trench.
- Apparatus according to claim 1, characterized in that the front wall (12) is provided at its top with a top skirt (16) extending between said rigid side walls(11) and designed to prevent the concrete overflowing while it is being injected under pressure.
- Apparatus according to claim 1 or claim 2, characterized in that said element (10) is connected to said machine (30) by a hinged link suitable for enabling the forward inclination of said element to be adjusted while it is progressing along the trench so as to improve the resistance of the element to thrust forces due to the pressure of the concrete at the bottom of the trench.
- Apparatus according to any one of claims 1 to 3, characterized in that the bottom skirt (14) is provided with a brake (17) suitable for exerting a force opposing the advance of the element in the trench.
- Apparatus according to claim 4, characterized in that the brake is constituted by one or more brake teeth (17) projecting from the surface of the bottom skirt.
- Apparatus according to any one of claims 1 to 5, characterized in that said injection means comprise a tube (20) fitted on the front wall (12), extending vertically along said wall, and provided with openings (22, 23) opening out into the bottom third region of said front wall.
- Apparatus according to any one of claims 1 to 6, characterized in that it comprises reinforcement (50) for insertion at intervals into the concrete before its sets, said reinforcement presenting vertical portions that are sheathed (51) to be preserved from contact with the concrete except at their bottom ends (52) suitable for acting as anchors in the concrete at the bottom of the trench, and except for their top ends (53) suitable for being stressed to tension the reinforcement, the apparatus also comprising means for exerting vertical traction on the reinforcement.
- A method of continuously constructing a concrete wall by implementing apparatus according to any one of claims 1 to 7, the method being characterized in that the concrete used presents compression strength of not less than 100 bars and traction strength of not less than 100 bars, and in that the concrete is prestressed in the trench.
- A method according to claim 8, characterized in that the concrete which has just been injected has vertical reinforcement inserted therein, which reinforcement is sheathed so as to be protected from coming into contact with the concrete, except for the bottom ends thereof which are suitable for acting as anchors in the concrete at the bottom of the trench, and except for the top ends thereof which are suitable for being stressed to tension the reinforcement, and in that vertical traction is exerted on said reinforcement.
- A method according to claim 9, characterized in that the reinforcement is placed at intervals in the vertical mid-plane of the trench.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9407710 | 1994-06-23 | ||
| FR9407710A FR2721633B1 (en) | 1994-06-23 | 1994-06-23 | Device and method for the execution of a concrete veil in a trench. |
| FR9507485 | 1995-06-22 | ||
| FR9507485A FR2721634A1 (en) | 1994-06-23 | 1995-06-22 | Device and method for the execution of a concrete veil in a trench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0688907A1 EP0688907A1 (en) | 1995-12-27 |
| EP0688907B1 true EP0688907B1 (en) | 2001-08-29 |
Family
ID=26231252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19950401496 Expired - Lifetime EP0688907B1 (en) | 1994-06-23 | 1995-06-23 | Apparatus and method for the construction of a concrete trench wall |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0688907B1 (en) |
| DE (1) | DE69522383T2 (en) |
| FR (1) | FR2721634A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3604736A1 (en) * | 1986-02-14 | 1986-07-17 | Andert, Kurt, Dipl.-Ing., 2900 Oldenburg | Cut wall |
| FR2611219B3 (en) * | 1987-02-20 | 1989-06-09 | Louis Claude | METHOD AND APPARATUS FOR MAKING A WALL IN THE GROUND |
-
1995
- 1995-06-22 FR FR9507485A patent/FR2721634A1/en active Granted
- 1995-06-23 EP EP19950401496 patent/EP0688907B1/en not_active Expired - Lifetime
- 1995-06-23 DE DE1995622383 patent/DE69522383T2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0688907A1 (en) | 1995-12-27 |
| DE69522383D1 (en) | 2001-10-04 |
| FR2721634B1 (en) | 1997-02-07 |
| DE69522383T2 (en) | 2002-05-23 |
| FR2721634A1 (en) | 1995-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0874941B1 (en) | Automatic wicket for a hydraulic structure such as a river sill, a dam spillway or a protective dyke | |
| CA1275813C (en) | Large diameter burried pipe | |
| EP0101350B1 (en) | Method and device for pulling out a shuttering at the realization of an underground cast wall | |
| EP3030721A2 (en) | Diaphragm wall | |
| WO2002075069A1 (en) | Device for anchoring prestressing reinforcements, prestressing system including said device and corresponding reinforcement | |
| EP0688907B1 (en) | Apparatus and method for the construction of a concrete trench wall | |
| FR2858343A1 (en) | Structural floor unit for building site, has compartments opening on lower side of unit and separated by ribs having unhooking part projecting below upper surface of fixing base to contact with one of lateral surfaces of base | |
| EP0585188A1 (en) | Device for automatically laying underground conduits | |
| EP0028558B1 (en) | Method of improving the sliding resistance of a civil engineering construction and its foundation | |
| CA2768945A1 (en) | Connection device for a reinforced earth structure, and related structure and method | |
| FR2475507A1 (en) | CHAIN CONVEYOR WITH RACLETTES | |
| EP1152101B1 (en) | Apparatus for realising mortar joints | |
| EP0360682B1 (en) | Expansion joint for a concrete pavement | |
| FR2721633A1 (en) | Underground concrete wall construction procedure | |
| EP0233417A1 (en) | Sleeve of plastics material for avoiding the splicing of electrical or communication cables, and process for ensuring the sealing capacity of such a sleeve | |
| FR2473085A1 (en) | Mfr. of continuous concrete wall - is cast in sections using successive trenches containing overlapping reinforcing frames and transverse bulkheads | |
| FR2728293A1 (en) | Reinforcement for timber frames of building | |
| FR2642460A1 (en) | Formwork device for a screed on a horizontal surface | |
| FR2615218A1 (en) | Sheeting for trenches | |
| EP0741206B1 (en) | Overflow sluice gate | |
| EP0744499B1 (en) | Scraper blade for bucket chain | |
| FR2536784A1 (en) | DEVICE FOR VERTICALLY CONTROLLING A PLANK FOR CONTROLLING THE LEVEL OF A COAL PLATE | |
| WO1988006208A1 (en) | Apparatus and method for making a wall into the ground | |
| FR2613747A1 (en) | Crosspiece with movable and orientable bearing points for forming shuttering panels, and shuttering panels made by means of this crosspiece | |
| FR2680381A1 (en) | Piece for supporting cladding blocks for filler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR GB IT LI NL PT |
|
| 17P | Request for examination filed |
Effective date: 19960603 |
|
| 17Q | First examination report despatched |
Effective date: 19980918 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BOUYGUES TRAVAUX PUBLICS |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE ES FR GB IT LI NL PT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20010829 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20010829 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 69522383 Country of ref document: DE Date of ref document: 20011004 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20011129 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20011117 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020630 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020630 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020630 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| BERE | Be: lapsed |
Owner name: *BOUYGUES TRAVAUX PUBLICS Effective date: 20020630 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130611 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20140617 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20140611 Year of fee payment: 20 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69522383 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69522383 Country of ref document: DE Effective date: 20150101 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150101 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20150622 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20150622 |