EP1243702A1 - Buttressing apparatus for an excavation shoring and use of the apparatus - Google Patents

Buttressing apparatus for an excavation shoring and use of the apparatus Download PDF

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Publication number
EP1243702A1
EP1243702A1 EP01401387A EP01401387A EP1243702A1 EP 1243702 A1 EP1243702 A1 EP 1243702A1 EP 01401387 A EP01401387 A EP 01401387A EP 01401387 A EP01401387 A EP 01401387A EP 1243702 A1 EP1243702 A1 EP 1243702A1
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EP
European Patent Office
Prior art keywords
excavation
rigid support
wall
shoring device
support structure
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EP01401387A
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German (de)
French (fr)
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EP1243702B1 (en
Inventor
Jean-Robert Gauthey
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Spie Fondations
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Spie Fondations
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits

Definitions

  • the invention relates to a device for shoring a wall of excavation support, especially for construction sites, and particularly suitable for use in seismic zones.
  • the anchors are high-tech works using steel prestresses and a sealing zone. This setting complex and expensive work requires the complex phasing of earthworks and may be impossible due to the presence of structures (pipeline, tunnels, cellars, etc.).
  • the struts are generally made of metal and their presence between the walls obstructs the excavation, making it difficult to carry out the work later such as earthworks or structural work.
  • this solution requires bracing and intermediate supports, for example pre-ground posts, and because of their elasticity, problems of expansion and / or temperature-related deformation may require processing complex such as the use of preloads, cylinders to accumulation, reflective paints, etc .... This solution therefore limits access to the search due to the presence of a tangle of struts can also cross at different heights.
  • the object of the invention is to solve at least one of the problems discussed above.
  • the invention provides for using at least one strut associated with a rigid support structure which frees up an area of work in its center in order to gain easier access to the interior of the excavation.
  • the subject of the invention relates to a device shoring of an excavation retaining wall defining an interior of excavation limited by this wall, said device comprising at least one strut of stabilization having two ends to bear against said wall at level of a first end, in which at least one rigid structure support, is intended to be arranged inside the excavation.
  • a stabilization strut by the opposite end to the first end, so that said structure is close enough to the excavation wall to define a workspace free access.
  • the rigid support structure is made of material making it removable, for example of materials composites.
  • all of the stabilization struts exert a centripetal compressive force on the rigid support structure.
  • the struts are arranged all around the rigid support structure so as to distribute the compressive force and limit the deformation of said structure.
  • the rigid support structure is of cylindrical type surface, circular, elliptical, or polyhedral, for example substantially rectangular, depending on the shape of the excavation, or of the type surface of revolution, in particular of conical shape, or even in successive cylindro-revolutionary stacking. This allows him to better withstand the compressive forces exerted by the struts.
  • a plurality of rigid support structures are stacked on top of each other in depending on the depth of the excavation.
  • beams are inserted between struts and the wall of excavation.
  • the device can also include slabs against which support the struts, to adapt to the shape of the wall of the search, especially at the corners of the wall of the search.
  • the rigid support structure is fitted with support posts suitable for resting and / or entering the soil constituting the bottom of the excavation.
  • the rigid support structure also includes foundations adapted to penetrate the ground constituting the bottom of the excavation.
  • the foundations form a continuous structure of the same section or thickness as that of the rigid support structure.
  • the device presents, externally to the rigid support structure, additional means of foot buttressing of wall.
  • the device according to the invention has in particular good ability to be used in a seismic area.
  • Figure 1 shows, in top view, a search 1 of usual type dug at a certain depth in the ground of a ground on which is a construction site, for example a building.
  • This excavation 1 has any shape, for example of polyhedral section or circular, delimited by a rigid wall 2.
  • This wall can be molded in concrete, mortar or other, or be in the form of wooden planks or metal to support the earth from the soil dug to achieve said excavation 1.
  • a device 10 for shoring up this rigid retaining wall 2 is also shown in figure 1.
  • the shoring device 10 comprises a rigid support structure 12 disposed inside the excavation 1 and which for example has a circular section. All around this structure rigid support 12 are arranged stabilization pins 15 of the usual type which bear at one end 15a against the retaining wall 2 of the excavation 1 and, at an opposite end 15b, against the external wall 12a of said rigid support structure 12.
  • the struts 15 exert a force of centripetal compression on the rigid support structure 12 and they are distributed all around this structure 12 so that the compressive force is well distributed to avoid excessive deformation of one or more particular or sensitive areas of the rigid support structure 12.
  • the stabilization struts 15 are supported against beams 16 of stress distributions shown in the figure 2. These beams 16 are placed at the end 15a of the struts 15 and are arranged perpendicularly to said struts 15. They thus avoid the retaining wall 2 is damaged and for example marked by a possible insertion of the struts 15.
  • the struts 15 are supported against slabs 18, in particular in certain angles 2a, 2b, 2c and 2d of the wall of support 2 of the excavation 1.
  • the rigid support structure 12 rests on support posts 20 spaced apart and adapted to rest and / or penetrate the soil constituting the bottom of the excavation 1.
  • These support posts 20 are preferably sealed to penetrating sealing foundations 22 in the soil at the bottom of the excavation 1.
  • the foundations of sealing 22 can be in the form of a continuous ring substantially identical to that of the rigid support structure 12.
  • this ring 22 can also serve as a conventional compression ring in cooperating with additional means of buttressing 24, such as concrete, soil injections or cement or mortar injections under pressure (“jet grouting” in Anglo-Saxon terminology). ensuring more specifically a transfer of loads from the base of the wall 2.
  • the rigid support structure 12 is also removable and easy to remove once the operations have been carried out in the bottom of the excavation 1. It can be reused for other excavations and other sites which is particularly advantageous and economical.
  • the rigid support structure 12 also rests on a significantly fewer support posts 15 than in the prior art, without loss of efficiency.
  • Such a device 10 can be used regardless of the form of excavation 1, in particular thanks to the corner slabs 18. It finds an application particular in seismic zones because the range of the struts is clearly reduced, thereby reducing the effect of elastic deformation which can cause displacements of the retaining wall.
  • the rigid support structure can be constituted prefabricated elements of steel, reinforced or unreinforced concrete, or of materials composites which may be removable. It can also be performed in constrained concrete, reinforced or not. In this case, it is demolished at the end of works. Furthermore, the shape of the rigid support structure can vary in depending on that of the excavation.

Abstract

The shoring device (10) for a support wall (2) of an excavation (1) comprises a stabilization support (15) which is supported against the wall end (15a). A rigid support structure (12) is located inside the excavation and against the external wall (12a) of which the stabilization support is supported at its opposite end (15b) so that the interior of the structure defines a freely accessible work space (25). An Independent claim is included for the use of the shoring device.

Description

L'invention concerne un dispositif d'étayage d'une paroi de soutènement de fouille, notamment pour chantier, et particulièrement adapté à une utilisation en zone sismique.The invention relates to a device for shoring a wall of excavation support, especially for construction sites, and particularly suitable for use in seismic zones.

Dans les fouilles traditionnelles, qui concernent tout type de creusement, excavation, puits, etc., l'étayage et la stabilisation des parois de soutènement s'effectuent au moyen de butons traversants qui travaillent en compression de paroi à paroi, ou de tirants d'ancrage.In traditional excavations, which concern all types of excavation, excavation, well, etc., the shoring and stabilization of the walls of support is carried out by means of through struts which work in wall to wall compression, or anchor rods.

Les tirants d'ancrage sont des ouvrages de haute technologie utilisant des précontraintes en acier et une zone de scellement. Cette mise en oeuvre complexe et coûteuse nécessite le phasage complexe de terrassements et peut s'avérer impossible du fait de la présence d'ouvrages (canalisation, tunnels, caves, etc...).The anchors are high-tech works using steel prestresses and a sealing zone. This setting complex and expensive work requires the complex phasing of earthworks and may be impossible due to the presence of structures (pipeline, tunnels, cellars, etc.).

Les butons sont en général réalisés en métal et leur présence entre les parois encombre la fouille, rendant difficile l'exécution des travaux ultérieurs tels qu'un terrassement ou du gros oeuvre. De plus, en cas de grandes dimensions, cette solution nécessite des systèmes de contreventement et des appuis intermédiaires, par exemple des poteaux pré-fondés, et du fait de leur élasticité, des problèmes de dilatation et/ou de déformation liés à la température peuvent nécessiter des mises en oeuvre complexes telles que l'utilisation de pré-chargements, de vérins à accumulation, de peintures réfléchissantes, etc... . Cette solution limite donc l'accès à la fouille du fait de la présence d'un enchevêtrement de butons pouvant par ailleurs se croiser à des hauteurs différentes.The struts are generally made of metal and their presence between the walls obstructs the excavation, making it difficult to carry out the work later such as earthworks or structural work. In addition, in the event of large dimensions, this solution requires bracing and intermediate supports, for example pre-ground posts, and because of their elasticity, problems of expansion and / or temperature-related deformation may require processing complex such as the use of preloads, cylinders to accumulation, reflective paints, etc .... This solution therefore limits access to the search due to the presence of a tangle of struts can also cross at different heights.

Ces systèmes ne donnent donc pas satisfaction tant du point de vue de leur encombrement que de leur mise en oeuvre, qui s'avère complexe, ainsi que de leur fiabilité ou de leur polyvalence dans les applications.These systems are therefore not satisfactory from the point in terms of their size than their implementation, which turns out complex, as well as their reliability or versatility in applications.

Le but de l'invention est de résoudre au moins l'un des problèmes évoqués ci-dessus.The object of the invention is to solve at least one of the problems discussed above.

Pour ce faire, l'invention prévoit d'utiliser au moins un buton associé à une structure rigide d'appui qui permet de libérer une zone de travail en son centre afin d'accéder plus facilement à l'intérieur de la fouille.To do this, the invention provides for using at least one strut associated with a rigid support structure which frees up an area of work in its center in order to gain easier access to the interior of the excavation.

Plus précisément, l'objet de l'invention concerne un dispositif d'étayage d'une paroi de soutènement de fouille définissant un intérieur de fouille limitée par cette paroi, ledit dispositif comprenant au moins un buton de stabilisation ayant deux extrémités pour prendre appui contre ladite paroi au niveau d'une première extrémité, dans lequel au moins une structure rigide d'appui, est destinée à être disposée à l'intérieur de la fouille. Contre une paroi de cette structure vient s'appuyer un buton de stabilisation, par l'extrémité opposée à la première extrémité, de sorte que ladite structure est suffisamment proche de la paroi de fouille pour définir un espace de travail libre d'accès.More specifically, the subject of the invention relates to a device shoring of an excavation retaining wall defining an interior of excavation limited by this wall, said device comprising at least one strut of stabilization having two ends to bear against said wall at level of a first end, in which at least one rigid structure support, is intended to be arranged inside the excavation. Against a wall of this structure comes to bear a stabilization strut, by the opposite end to the first end, so that said structure is close enough to the excavation wall to define a workspace free access.

De manière avantageuse, la structure rigide d'appui est réalisée en matériau la rendant amovible, par exemple en matériaux composites.Advantageously, the rigid support structure is made of material making it removable, for example of materials composites.

Avantageusement encore, tous les butons de stabilisation exercent une force de compression centripète sur la structure rigide d'appui.Advantageously again, all of the stabilization struts exert a centripetal compressive force on the rigid support structure.

Dans un mode de réalisation préféré, les butons sont disposés tout autour de la structure rigide d'appui de manière à répartir la force de compression et limiter la déformation de ladite structure.In a preferred embodiment, the struts are arranged all around the rigid support structure so as to distribute the compressive force and limit the deformation of said structure.

La structure rigide d'appui est de surface de type cylindrique, de section circulaire, elliptique, ou encore polyédrique, par exemple sensiblement rectangulaire, suivant la forme de la fouille, ou bien de type surface de révolution, en particulier de forme conique, ou bien encore en empilement successif cylindro-révolutionnaire. Cela lui permet ainsi de mieux supporter les forces de compressions exercées par les butons.The rigid support structure is of cylindrical type surface, circular, elliptical, or polyhedral, for example substantially rectangular, depending on the shape of the excavation, or of the type surface of revolution, in particular of conical shape, or even in successive cylindro-revolutionary stacking. This allows him to better withstand the compressive forces exerted by the struts.

Selon un mode préféré de réalisation, une pluralité de structures rigides d'appui sont empilées les unes au-dessus des autres en fonction de la profondeur de la fouille.According to a preferred embodiment, a plurality of rigid support structures are stacked on top of each other in depending on the depth of the excavation.

Avantageusement, afin de répartir la charge appliquée contre la paroi de la fouille, des poutres sont intercalées entre des butons et la paroi de fouille.Advantageously, in order to distribute the load applied against the wall of the excavation, beams are inserted between struts and the wall of excavation.

Le dispositif peut également comprendre des dalles contre lesquelles prennent appui les butons, pour s'adapter à la forme de la paroi de la fouille, notamment au niveau des angles de la paroi de la fouille.The device can also include slabs against which support the struts, to adapt to the shape of the wall of the search, especially at the corners of the wall of the search.

Selon un aspect complémentaire, la structure rigide d'appui est munie de poteaux de support adaptés pour reposer et/ou pénétrer dans le sol constituant le fond de la fouille. According to a complementary aspect, the rigid support structure is fitted with support posts suitable for resting and / or entering the soil constituting the bottom of the excavation.

Selon un autre mode de réalisation, la structure rigide d'appui comprend également des fondations adaptées pour pénétrer dans le sol constituant le fond de la fouille.According to another embodiment, the rigid support structure also includes foundations adapted to penetrate the ground constituting the bottom of the excavation.

De préférence, les fondations forment une structure continue de même section ou épaisseur que celle de la structure rigide d'appui.Preferably, the foundations form a continuous structure of the same section or thickness as that of the rigid support structure.

Avantageusement, le dispositif présente, extérieurement à la structure rigide d'appui, des moyens supplémentaires de butonnage de pied de paroi.Advantageously, the device presents, externally to the rigid support structure, additional means of foot buttressing of wall.

En particulier, les moyens supplémentaires de butonnage prennent appui contre lesdites fondations.In particular, the additional means of butonnage lean against said foundations.

Le dispositif selon l'invention présente en particulier de bonnes aptitudes à être utilisé dans une zone sismique.The device according to the invention has in particular good ability to be used in a seismic area.

D'autres caractéristiques, détails et avantages de l'invention ressortiront à la lecture de la description faite en référence aux dessins annexés donnés à titre d'exemple et dans lesquels :

  • la figure 1 est une vue de dessus d'un dispositif d'étayage de fouille conforme à la présente Invention, et
  • la figure 2 est une vue en coupe de la figure 1 selon une ligne AA'.
Other characteristics, details and advantages of the invention will emerge on reading the description made with reference to the accompanying drawings given by way of example and in which:
  • FIG. 1 is a top view of an excavation shoring device in accordance with the present invention, and
  • Figure 2 is a sectional view of Figure 1 along a line AA '.

La figure 1 représente, en vue du dessus, une fouille 1 de type habituel creusée à une certaine profondeur dans le sol d'un terrain sur lequel se trouve un chantier de construction, par exemple d'un bâtiment. Cette fouille 1 présente une forme quelconque, par exemple de section polyédrique ou circulaire, délimitée par une paroi rigide 2. Cette paroi peut être moulée en béton, en mortier ou autre, ou se présenter sous la forme de planches de bois ou en métal permettant de soutenir la terre du sol creusé pour réaliser ladite fouille 1. Un dispositif 10 d'étayage de cette paroi rigide de soutènement 2 est également représenté sur la figure 1.Figure 1 shows, in top view, a search 1 of usual type dug at a certain depth in the ground of a ground on which is a construction site, for example a building. This excavation 1 has any shape, for example of polyhedral section or circular, delimited by a rigid wall 2. This wall can be molded in concrete, mortar or other, or be in the form of wooden planks or metal to support the earth from the soil dug to achieve said excavation 1. A device 10 for shoring up this rigid retaining wall 2 is also shown in figure 1.

Le dispositif d'étayage 10 conforme à l'invention comprend une structure rigide d'appui 12 disposée à l'intérieur de la fouille 1 et qui présente par exemple une section circulaire. Tout autour de cette structure rigide d'appui 12 sont disposés des butons 15 de stabilisation de type usuel qui prennent appui à une extrémité 15a contre la paroi de soutènement 2 de la fouille 1 et, à une extrémité opposée 15b, contre la paroi externe 12a de ladite structure rigide d'appui 12. Les butons 15 exercent une force de compression centripète sur la structure rigide d'appui 12 et ils sont répartis tout autour de cette structure 12 de telle sorte que la force de compression est bien répartie pour éviter toute déformation trop importante d'une ou plusieurs zones particulières ou sensibles de la structure rigide d'appui 12.The shoring device 10 according to the invention comprises a rigid support structure 12 disposed inside the excavation 1 and which for example has a circular section. All around this structure rigid support 12 are arranged stabilization pins 15 of the usual type which bear at one end 15a against the retaining wall 2 of the excavation 1 and, at an opposite end 15b, against the external wall 12a of said rigid support structure 12. The struts 15 exert a force of centripetal compression on the rigid support structure 12 and they are distributed all around this structure 12 so that the compressive force is well distributed to avoid excessive deformation of one or more particular or sensitive areas of the rigid support structure 12.

De préférence, les butons de stabilisation 15 prennent appui contre des poutres 16 de répartitions de contraintes représentées sur la figure 2. Ces poutres 16 sont placées à l'extrémité 15a des butons 15 et sont disposées perpendiculairement auxdits butons 15. Elles évitent ainsi que la paroi de soutènement 2 soit abímée et par exemple marquée par un enfoncement éventuel des butons 15.Preferably, the stabilization struts 15 are supported against beams 16 of stress distributions shown in the figure 2. These beams 16 are placed at the end 15a of the struts 15 and are arranged perpendicularly to said struts 15. They thus avoid the retaining wall 2 is damaged and for example marked by a possible insertion of the struts 15.

En certains endroits, les butons 15 prennent appui contre des dalles 18, en particulier dans certains angles 2a, 2b, 2c et 2d de la paroi de soutènement 2 de la fouille1.In some places, the struts 15 are supported against slabs 18, in particular in certain angles 2a, 2b, 2c and 2d of the wall of support 2 of the excavation 1.

Comme illustrée sur la figure 2, la structure rigide d'appui 12 repose sur des poteaux de support 20 espacés et adaptés pour reposer et/ou pénétrer dans le sol constituant le fond de la fouille 1. Ces poteaux de support 20 sont de préférence scellés à des fondations de scellement 22 pénétrant dans le sol du fond de la fouille 1.As illustrated in FIG. 2, the rigid support structure 12 rests on support posts 20 spaced apart and adapted to rest and / or penetrate the soil constituting the bottom of the excavation 1. These support posts 20 are preferably sealed to penetrating sealing foundations 22 in the soil at the bottom of the excavation 1.

Dans le cadre d'une très grande fouille 1, les fondations de scellement 22 peuvent se présenter sous la forme d'un anneau continu sensiblement identique à celui de la structure rigide d'appui 12. Dans le cas particulier d'un anneau de fondation 22 des poteaux de support 20, cet anneau 22 peut également servir d'anneau de compression classique en coopérant avec des moyens supplémentaires de butonnage 24, tels que du béton, des injections du sol ou des injections de ciment ou de mortier sous pression (« jet grouting » en terminologie anglo-saxonne). assurant plus spécifiquement un transfert des charges du pied de la paroi 2.As part of a very large excavation 1, the foundations of sealing 22 can be in the form of a continuous ring substantially identical to that of the rigid support structure 12. In the case particular of a foundation ring 22 of the support posts 20, this ring 22 can also serve as a conventional compression ring in cooperating with additional means of buttressing 24, such as concrete, soil injections or cement or mortar injections under pressure (“jet grouting” in Anglo-Saxon terminology). ensuring more specifically a transfer of loads from the base of the wall 2.

La solution ainsi présentée permet de réaliser aisément l'étayage d'une paroi de soutènement 2 d'une fouille 1 d'un chantier, tout en libérant une zone de travail maximale 25 à l'intérieur de la structure rigide d'appui 12. Cela permet ainsi d'effectuer facilement, et sans risque pour les ouvriers, des travaux de terrassement, du gros oeuvre ou autre, ce qui était particulièrement difficile à réaliser avec les dispositifs de l'art antérieur car les butons traversaient la fouille de part et d'autre, éventuellement en se croisant à diverses hauteurs.The solution thus presented makes it easy to carry out the shoring of a retaining wall 2 of an excavation 1 of a building site, while freeing up to 25 working areas inside the rigid structure 12. This makes it easy and without risk to workers, earthworks, structural work or whatever, which was particularly difficult to achieve with the devices of the prior art because the butons crossed the excavation on both sides, possibly crossing at various heights.

Cette solution réduit aussi considérablement la longueur des butons 15 utilisés, ce qui permet d'avoir une bien meilleure tenue mécanique en compression pour étayer la paroi de soutènement 2 et réduit la quantité de matière à utiliser, principalement l'acier, les butons étant généralement réalisés dans ce métal.This solution also considerably reduces the length of the butons 15 used, which allows for much better mechanical strength in compression to support the retaining wall 2 and reduces the amount of material to be used, mainly steel, the struts being generally made of this metal.

La structure rigide d'appui 12 est par ailleurs amovible et facile à retirer une fois les opérations effectuées dans le fond de la fouille 1. Elle peut être réutilisée pour d'autres fouilles et d'autres chantiers ce qui est particulièrement avantageux et économique.The rigid support structure 12 is also removable and easy to remove once the operations have been carried out in the bottom of the excavation 1. It can be reused for other excavations and other sites which is particularly advantageous and economical.

La structure rigide d'appui 12 repose également sur un nombre nettement moindre de poteaux de support 15 que dans l'art antérieur, sans perte d'efficacité.The rigid support structure 12 also rests on a significantly fewer support posts 15 than in the prior art, without loss of efficiency.

Un tel dispositif 10 peut être utilisé quelle que soit la forme de la fouille 1, notamment grâce aux dalles d'angle 18. Il trouve une application particulière dans les zones sismiques car la portée des butons est nettement réduite, réduisant ainsi l'effet de déformation élastique pouvant provoquer des déplacements de la paroi de soutènement.Such a device 10 can be used regardless of the form of excavation 1, in particular thanks to the corner slabs 18. It finds an application particular in seismic zones because the range of the struts is clearly reduced, thereby reducing the effect of elastic deformation which can cause displacements of the retaining wall.

En cas de fouille 1 profonde et donc de paroi de soutènement 2 assez haute, il est possible d'empiler verticalement plusieurs structures rigides d'appui 12 selon la profondeur de la fouille 1, comme cela est illustré sur la figure 2.In the event of a deep excavation 1 and therefore of a retaining wall 2 high enough, several structures can be stacked vertically support rigid 12 according to the depth of excavation 1, as illustrated in figure 2.

Une chronologie des travaux peut alors être la suivante :

  • réalisation de la paroi moulée ;
  • réalisation des poteaux de support et des fondations ;
  • réalisation d'une première et mise en place d'une structure d'appui par exemple annulaire ;
  • mise en place des premiers terrassements et des butons ;
  • terrassements sur un niveau déterminé et pose ou construction d'un deuxième anneau d'appui, et pose de butons de deuxième niveau ;
  • réitération tant que nécessaire.
A chronology of the work can then be as follows:
  • production of the diaphragm wall;
  • production of support posts and foundations;
  • production of a first and installation of a support structure, for example annular;
  • installation of the first earthworks and struts;
  • earthworks on a given level and installation or construction of a second support ring, and installation of second level struts;
  • reiteration as necessary.

Il doit être bien entendu toutefois que ces exemples sont donnés uniquement à titre d'illustration de l'objet de l'Invention dont ils ne constituent en aucune manière une limitation.It should be understood, however, that these examples are given solely by way of illustration of the subject of the Invention of which they do not in no way constitute a limitation.

Ainsi, la structure rigide d'appui peut être constituée d'éléments préfabriqués en acier, béton armé ou non, ou en matériaux composites qui peuvent être démontables. Elle peut également être réalisée en béton contraint, armé ou non. Dans ce cas, elle est démolie en fin de travaux. Par ailleurs, la forme de la structure rigide d'appui peut varier en fonction de celle de la fouille.Thus, the rigid support structure can be constituted prefabricated elements of steel, reinforced or unreinforced concrete, or of materials composites which may be removable. It can also be performed in constrained concrete, reinforced or not. In this case, it is demolished at the end of works. Furthermore, the shape of the rigid support structure can vary in depending on that of the excavation.

Claims (18)

Dispositif d'étayage (10) d'une paroi de soutènement (2) de fouille (1) définissant un intérieur de fouille limitée par cette paroi, ledit dispositif (10) comprenant au moins un buton de stabilisation (15) ayant deux extrémités (15a, 15b) pour prendre appui contre ladite paroi (2) au niveau d'une première extrémité (15a), caractérisé en ce qu'il présente en outre au moins une structure rigide d'appui (12) destinée à être disposée à l'intérieur de la fouille et contre une paroi externe (12a) de laquelle vient s'appuyer un buton de stabilisation (15) au niveau de l'extrémité (15b) opposée à la première extrémité, de sorte que ladite structure (12) est suffisamment proche de la paroi de fouille (2) pour définir un espace de travail (25) libre d'accès.Shoring device (10) for a retaining wall (2) for excavation (1) defining a excavation interior bounded by this wall, said device (10) comprising at least one stabilizing bolt (15) having two ends ( 15a, 15b) to bear against said wall (2) at a first end (15a), characterized in that it also has at least one rigid support structure (12) intended to be disposed at the inside the excavation and against an external wall (12a) from which abuts a stabilizing pin (15) at the end (15b) opposite the first end, so that said structure (12) is sufficiently close to the excavation wall (2) to define a workspace (25) free of access. Dispositif d'étayage selon la revendication 1, caractérisé en ce que la structure rigide d'appui (12) est en matériau rendant cette structure amovible.Shoring device according to claim 1, characterized in that the rigid support structure (12) is made of material making this structure removable. Dispositif d'étayage selon la revendication 1 ou 2, caractérisé en ce que tous les butons de stabilisation (15) exercent une force de compression centripète sur la structure rigide d'appui (12).Shoring device according to claim 1 or 2, characterized in that all the stabilizing pins (15) exert a centripetal compressive force on the rigid support structure (12). Dispositif d'étayage selon la revendication 3, caractérisé en ce que les butons (15) sont disposés tout autour de la structure rigide d'appui (12) pour répartir la force de compression et limiter la déformation de ladite structure (12).Shoring device according to claim 3, characterized in that the struts (15) are arranged all around the rigid support structure (12) to distribute the compressive force and limit the deformation of said structure (12). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure rigide d'appui (12) est de surface de type cylindrique.Shoring device according to any one of the preceding claims, characterized in that the rigid support structure (12) is of cylindrical type surface. Dispositif d'étayage selon la revendication précédente, dans lequel la surface cylindrique est choisie entre une section circulaire, elliptique et polyédriqueShoring device according to the preceding claim, in which the cylindrical surface is chosen between a circular section, elliptical and polyhedral Dispositif d'étayage selon l'une quelconque des revendications 1 à 4, dans lequel la structure rigide d'appui est au moins en partie de révolution.Shoring device according to any one of Claims 1 to 4, in which the rigid support structure is at least in part of revolution. Dispositif d'étayage selon la revendication précédente, dans lequel la structure rigide d'appui est en empilement cylindro-révolutionnaire.Shoring device according to the preceding claim, in which the rigid support structure is in a cylindrical-revolutionary stack. Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une pluralité de structures rigides d'appui (12) sont empilées les unes au-dessus des autres en fonction de la profondeur de la fouille (1).Shoring device according to any one of the preceding claims, characterized in that a plurality of rigid support structures (12) are stacked one above the other depending on the depth of the excavation (1). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre des poutres de répartition (16) de la contrainte appliquée contre la paroi (2) de la fouille (1), lesdites poutres (16) étant intercalées entre des butons (15) et la paroi de la fouille (2).Shoring device according to any one of the preceding claims, characterized in that it further comprises distribution beams (16) of the stress applied against the wall (2) of the excavation (1), said beams (16 ) being interposed between struts (15) and the wall of the excavation (2). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend de plus des dalles (18) contre lesquelles prennent appui les butons (15) pour s'adapter à la forme de la paroi (2) de la fouille (1).Shoring device according to any one of the preceding claims, characterized in that it further comprises slabs (18) against which the pins (15) bear against to adapt to the shape of the wall (2) of the search (1). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure rigide d'appui (12) est munie de poteaux de support (20) adaptés pour reposer et/ou pénétrer dans le sol constituant le fond de la fouille (1).Shoring device according to any one of the preceding claims, characterized in that the rigid support structure (12) is provided with support posts (20) adapted to rest and / or penetrate into the ground constituting the bottom of the excavation (1). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure rigide d'appui (12) comprend également des fondations (22) adaptés pour pénétrer dans le sol constituant le fond de la fouille (1).Shoring device according to any one of the preceding claims, characterized in that the rigid support structure (12) also comprises foundations (22) adapted to penetrate into the ground constituting the bottom of the excavation (1). Dispositif d'étayage selon la revendication 11, caractérisé en ce que les fondations (22) forment une structure continue de même section que celle de la structure rigide d'appui (12).Shoring device according to claim 11, characterized in that the foundations (22) form a continuous structure of the same section as that of the rigid support structure (12). Dispositif d'étayage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il présente, extérieurement à la structure rigide d'appui (12), des moyens supplémentaires de butonnage (24) de pied de paroi (2).Shoring device according to any one of the preceding claims, characterized in that it has, external to the rigid support structure (12), additional means of abutment (24) of the wall base (2). Dispositif d'étayage selon les revendications 11 et 13 ou 12 et 13, caractérisé en ce que les moyens supplémentaires de butonnage (24) prennent appui contre les fondations (22).Shoring device according to claims 11 and 13 or 12 and 13, characterized in that the additional abutment means (24) bear against the foundations (22). Dispositif d'étayage selon la revendication précédente, dans lequel les moyens supplémentaires sont choisis parmi des butons, du béton, des injections de consolidation et du jet grouting.Shoring device according to the preceding claim, in which the additional means are chosen from butons, concrete, consolidation injections and jet grouting. Utilisation du dispositif (10) d'étayage d'une paroi de soutènement (2) de fouille (1) selon l'une quelconque des revendications précédentes en zone sismique.Use of the device (10) for shoring a wall of excavation support (2) according to any one of the claims previous in seismic zone.
EP01401387A 2001-03-13 2001-05-28 Buttressing apparatus for an excavation shoring and use of the apparatus Expired - Lifetime EP1243702B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0103384 2001-03-13
FR0103384A FR2822172B1 (en) 2001-03-13 2001-03-13 DEVICE FOR SHAPING A WALL FOR BRIDGE HOLDING AND USE OF SUCH A DEVICE

Publications (2)

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EP1243702A1 true EP1243702A1 (en) 2002-09-25
EP1243702B1 EP1243702B1 (en) 2005-08-10

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EP01401387A Expired - Lifetime EP1243702B1 (en) 2001-03-13 2001-05-28 Buttressing apparatus for an excavation shoring and use of the apparatus

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EP (1) EP1243702B1 (en)
AT (1) ATE301743T1 (en)
DE (1) DE60112543T2 (en)
ES (1) ES2247037T3 (en)
FR (1) FR2822172B1 (en)

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CN112495081A (en) * 2020-11-13 2021-03-16 郑州大学第一附属医院 Dustproof effectual building foundation ditch dustproof system

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EP1526220A1 (en) * 2003-10-23 2005-04-27 Applied Geotechnical Engineering Limited Apparatus for providing support in building construction
CN106836240B (en) * 2015-05-22 2018-08-10 朱奎 Basement annular brace construction method for supporting
CN105239583B (en) * 2015-09-07 2017-03-29 中铁三局集团有限公司 Suitable for the construction method that special-shaped deep big crossover node foundation ditch annular brace is removed
CN112942366A (en) * 2021-02-02 2021-06-11 中国建筑第八工程局有限公司 Node structure with steel support serving as steel support and construction method
CN114875926A (en) * 2022-05-31 2022-08-09 中信国安建工集团有限公司 Deep foundation pit supporting structure
CN115012731A (en) * 2022-06-15 2022-09-06 中国建筑第五工程局有限公司 Foundation pit protection fence
CN115288155B (en) * 2022-08-19 2023-10-27 中国一冶集团有限公司 Efficient construction method of square and round combined ultra-deep permanent foundation pit supporting structure

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Publication number Priority date Publication date Assignee Title
CN112495081A (en) * 2020-11-13 2021-03-16 郑州大学第一附属医院 Dustproof effectual building foundation ditch dustproof system
CN112495081B (en) * 2020-11-13 2023-11-07 郑州大学第一附属医院 Building foundation pit dustproof system with good dustproof effect

Also Published As

Publication number Publication date
EP1243702B1 (en) 2005-08-10
DE60112543T2 (en) 2006-06-14
ES2247037T3 (en) 2006-03-01
FR2822172B1 (en) 2003-12-05
FR2822172A1 (en) 2002-09-20
ATE301743T1 (en) 2005-08-15
DE60112543D1 (en) 2005-09-15

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