EP1243702B1 - Abstützeinrichtung einer Grabenwand und deren Anwendung - Google Patents

Abstützeinrichtung einer Grabenwand und deren Anwendung Download PDF

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Publication number
EP1243702B1
EP1243702B1 EP01401387A EP01401387A EP1243702B1 EP 1243702 B1 EP1243702 B1 EP 1243702B1 EP 01401387 A EP01401387 A EP 01401387A EP 01401387 A EP01401387 A EP 01401387A EP 1243702 B1 EP1243702 B1 EP 1243702B1
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EP
European Patent Office
Prior art keywords
wall
support structure
bracing device
support
bracing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01401387A
Other languages
English (en)
French (fr)
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EP1243702A1 (de
Inventor
Jean-Robert Gauthey
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.)
Spie Fondations
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Spie Fondations
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Filing date
Publication date
Application filed by Spie Fondations filed Critical Spie Fondations
Publication of EP1243702A1 publication Critical patent/EP1243702A1/de
Application granted granted Critical
Publication of EP1243702B1 publication Critical patent/EP1243702B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 zone.
  • Anchors are high-tech works using steel prestressing and a sealing zone. This implementation complex and expensive work requires the complex phasing of earthworks and may prove impossible due to the presence of structures (pipes, tunnels, cellars, etc ).
  • the bumpers are usually made of metal and their presence between the walls clutters the excavation, making it difficult to carry out the work such as earthworks or structural work.
  • this solution requires bracing and intermediate supports, for example prefabricated posts, and because of their elasticity, dilation problems and / or deformation related to temperature may require implementations such as the use of pre-loads, accumulation, reflective paints, etc ... This solution therefore limits access to the search due to the presence of an entanglement of bumpers which can also be crossed at different heights.
  • JP-A-09264024 is known a device for shoring a retaining wall excavation, comprising, on the one hand, a support structure intended to penetrate the ground constituting the bottom of the excavation below the wall and, on the other hand, stabilization bearing on the support structure and intended to support the wall, each buton being intended to bear against said wall at a first end and having a second end bearing on said support structure.
  • the object of the invention is to solve at least one of the problems mentioned above.
  • the invention provides for using at least one buton associated with a rigid support structure that allows to free a zone of work in the center to gain access to the interior of the excavation.
  • the subject of the invention concerns a device for shoring a retaining wall of a search, comprising, on the one hand, a support structure intended to rest on or penetrate the ground constituting the bottom of said excavation below said wall and, secondly, stabilization buttresses bearing support on said support structure and intended to support said wall, each buttress being intended for bear against said wall at a first end and having a second end bearing on said support structure, and according to which said structure support posts having support posts adapted to rest or penetrate into said ground and at least one support ring resting on said posts and on which support struts.
  • the rigid support structure is made of material making it removable, for example in materials composites.
  • all the stabilization stops exert a centripetal compression force on the rigid support structure.
  • the butons are arranged around the rigid support structure so as to distribute the compression force and limit the deformation of said structure.
  • the rigid support structure is of cylindrical type surface, circular section, elliptical or polyhedric, for example substantially rectangular, depending on the shape of the excavation, or of type surface of revolution, in particular of conical shape, or even in successive cylindro-revolutionary stack. This allows him to better withstand the forces of compression exerted by the butons.
  • a plurality of rigid support structures are stacked one above the other in depending on the depth of the search.
  • beams are interposed between buttresses and the wall excavation.
  • the device may also include slabs against which support the bumpers, 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 provided with support posts suitable for resting and / or entering the ground constituting the bottom of the excavation.
  • the rigid support structure also includes foundations adapted to penetrate the ground constituting the bottom of the search.
  • the foundations form a continuous structure of the same section or thickness as that of the rigid support structure.
  • the device has, externally to the rigid support structure, additional means of foot buttressing wall.
  • the additional means of buttressing take support against said foundations.
  • the device according to the invention presents in particular good aptitude to be used in a seismic zone.
  • FIG. 1 represents, in view from above, a search 1 of usual type dug to a certain depth in the ground of a land 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 into concrete, mortar or other, or be in the form of wooden planks or metal to support the ground soil dug to achieve the said excavation 1.
  • a device 10 for shoring 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 a circular section. All around this structure rigid support 12 are disposed stabilizers 15 of the usual type which bear on one end 15a against the retaining wall 2 of the excavation 1 and, at an opposite end 15b, against the outer wall 12a of said rigid support structure 12.
  • the buttresses 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 any excessive deformation of one or more particular or sensitive areas of the rigid support structure 12.
  • the stabilization stops 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 buttresses 15 and are disposed perpendicularly to said butons 15. They thus avoid that the retaining wall 2 is damaged and for example marked by a possible penetration of the butons 15.
  • the butons 15 are supported against slabs 18, in particular in certain angles 2a, 2b, 2c and 2d of the wall of support 2 of the search 1.
  • the rigid support structure 12 rests on support posts 20 spaced apart and adapted to rest and / or penetrate the soil forming the bottom of the excavation 1.
  • These support posts 20 are preferably sealed to penetrating sealing foundations 22 in the soil from the bottom of the excavation 1.
  • the foundations of sealing 22 may 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 pressure ("jet grouting" in English terminology) ensuring more specifically a transfer of the loads of the foot of the wall 2.
  • the rigid support structure 12 is also removable and easy to remove once the operations have been completed in the bottom of the search 1. It can be reused for other excavations and other building sites which is particularly advantageous and economical.
  • the rigid support structure 12 is also based on a considerably less support posts than in the prior art, without loss of efficiency.
  • Such a device 10 can be used whatever the form of the excavation 1, in particular thanks to the angle slabs 18. It finds an application particular in seismic zones because the range of the bumpers is clearly reduced, thus reducing the effect of elastic deformation displacements of the retaining wall.
  • the rigid support structure can be constituted prefabricated elements made of steel, reinforced concrete or not, or of composites that can be dismantled. It can also be performed in constrained concrete, armed or not. In this case, it is demolished at the end of works. Moreover, the shape of the rigid support structure can vary in according to that of the excavation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Road Signs Or Road Markings (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Retaining Walls (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Claims (14)

  1. Abstützeinrichtung (10) einer Stütz- bzw. Spundwand (2) einer Baugrube (1), wobei die Einrichtung (10) einerseits einen starren Stützaufbau, der zur Auflage auf dem oder zum Eindringen unterhalb der Stützwand in den den Grund der Baugrube (1) bildenden Boden bestimmt ist, und andererseits Stabilisierungsstreben (15) aufweist, die an dem Stützaufbau abgestützt sind und zur Abstützung der Wand (2) vorgesehen sind, wobei jede Strebe (15) dazu bestimmt ist, auf der Höhe eines ersten Endes (15a) ein Auflager bzw. eine Stütze gegen die Wand (2) zu bilden, und ein zweites Ende (15b) aufweist, welches sich auf dem Stützaufbau abstützt, und wobei der Stützaufbau Tragpfosten (20), die zum Stehen auf oder zum Eindringen in den Boden ausgelegt sind, und mindestens einen Haltering (12) aufweist, der auf den Pfosten (20) aufliegt und an welchem sich die Streben (15) abstützen.
  2. Abstützeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Stützaufbau lösbar ausgebildet ist.
  3. Abstützeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Stabilisierungsstreben (15) eine zentripetale Druckkraft auf den Stützaufbau ausüben.
  4. Abstützeinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Streben (15) um den gesamten Ring (12) herum zur Aufteilung der Druckkraft und zur Begrenzung der Verformung des Stützaufbaus abgestützt sind.
  5. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ring einen rechteckigen Querschnitt aufweist.
  6. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Vielzahl von einem unter dem anderen gestapelten Halteringen (12) aufweist.
  7. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie außerdem Träger (16) zur Verteilung der gegen die Stützwand (2) aufgebrachten Belastung bzw. Spannung aufweist, wobei jeder Träger (16) zwischen einem der Pfosten (15) und der Stützwand (2) eingebracht ist.
  8. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie außerdem Platten (18) aufweist, auf denen mehrere der Pfosten (15) zur Anpassung an die Form der Stützwand (2) abgestützt sind.
  9. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stützaufbau außerdem Fundamente (22) aufweist, die zum Eindringen in den Boden angepasst sind.
  10. Abstützeinrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Fundamente (22) einen Aufbau in durchgängiger Ringform mit dem gleichen Durchmesser aufweisen, den der des Halterings (12) oder der jedes Halterings (12) aufweist.
  11. Abstützeinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie außerhalb an dem Stützaufbau ergänzende Einrichtungen (24) zur Unterklotzung des Fußes der Wand (2) aufweist.
  12. Abstützeinrichtung nach den Ansprüchen 9 und 11 oder 10 und 11, dadurch gekennzeichnet, dass die ergänzenden Einrichtungen (24) zur Unterklotzung an den Fundamenten (22) abgestützt sind.
  13. Abstützeinrichtung nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die ergänzenden Einrichtungen (24) zur Unterklotzung unter Folgendem ausgewählt sind: Strebstempel, Beton, Einspritzungen zur Verfestigung und "Jet Grouting".
  14. Verwendung der Abstützeinrichtung (10) nach einem der vorhergehenden Ansprüche in einer Erdbebenzone.
EP01401387A 2001-03-13 2001-05-28 Abstützeinrichtung einer Grabenwand und deren Anwendung Expired - Lifetime EP1243702B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0103384 2001-03-13
FR0103384A FR2822172B1 (fr) 2001-03-13 2001-03-13 Dispositif d'etayage d'une paroi de soutenement de fouille et utilisation d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP1243702A1 EP1243702A1 (de) 2002-09-25
EP1243702B1 true EP1243702B1 (de) 2005-08-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01401387A Expired - Lifetime EP1243702B1 (de) 2001-03-13 2001-05-28 Abstützeinrichtung einer Grabenwand und deren Anwendung

Country Status (5)

Country Link
EP (1) EP1243702B1 (de)
AT (1) ATE301743T1 (de)
DE (1) DE60112543T2 (de)
ES (1) ES2247037T3 (de)
FR (1) FR2822172B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105019553A (zh) * 2015-05-22 2015-11-04 朱奎 地下室环形支撑支护结构

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1526220A1 (de) * 2003-10-23 2005-04-27 Applied Geotechnical Engineering Limited Vorrichtung zum Unterstützen in Baukonstruktionen
CN105239583B (zh) * 2015-09-07 2017-03-29 中铁三局集团有限公司 适用于异型深大交叉节点基坑环形支撑拆除的施工方法
CN112495081B (zh) * 2020-11-13 2023-11-07 郑州大学第一附属医院 一种防尘效果好的建筑基坑防尘系统
CN112942366A (zh) * 2021-02-02 2021-06-11 中国建筑第八工程局有限公司 钢支撑兼作钢换撑的节点结构及施工方法
CN114875926A (zh) * 2022-05-31 2022-08-09 中信国安建工集团有限公司 一种深基坑支护结构
CN115012731A (zh) * 2022-06-15 2022-09-06 中国建筑第五工程局有限公司 一种基坑防护围栏
CN115288155B (zh) * 2022-08-19 2023-10-27 中国一冶集团有限公司 一种方圆组合超深永久基坑支护结构的高效建造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1484543A1 (de) * 1964-03-24 1969-05-22 Roechlingsche Eisen & Stahl Stuetzwaende fuer tiefbauliche Anlagen
FR1450745A (fr) * 1965-07-13 1966-06-24 Procédé de construction en sous-sol
US3490242A (en) * 1968-03-07 1970-01-20 Harry Schnabel Jr Method and structure for reinforcing an earthen excavation
JPH04333720A (ja) * 1991-05-02 1992-11-20 Shimizu Corp アイランド工法における切梁架構
JPH09264024A (ja) * 1996-03-29 1997-10-07 Kawasaki Steel Corp 土留め又は締切り工事方法
JPH108469A (ja) * 1996-06-21 1998-01-13 Kawatetsu Kizai Kogyo Kk 土留め壁の構築方法
JPH10159094A (ja) * 1996-11-30 1998-06-16 Kumagai Gumi Co Ltd 山留め壁の支保構造

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105019553A (zh) * 2015-05-22 2015-11-04 朱奎 地下室环形支撑支护结构
CN105019553B (zh) * 2015-05-22 2017-07-28 朱奎 地下室环形支撑支护结构

Also Published As

Publication number Publication date
ES2247037T3 (es) 2006-03-01
FR2822172A1 (fr) 2002-09-20
ATE301743T1 (de) 2005-08-15
DE60112543T2 (de) 2006-06-14
DE60112543D1 (de) 2005-09-15
EP1243702A1 (de) 2002-09-25
FR2822172B1 (fr) 2003-12-05

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