EP2714998A1 - Procede de fabrication d'une paroi de soutenement a partir d'une paroi brute en soil-mixing. - Google Patents
Procede de fabrication d'une paroi de soutenement a partir d'une paroi brute en soil-mixing.Info
- Publication number
- EP2714998A1 EP2714998A1 EP12731065.4A EP12731065A EP2714998A1 EP 2714998 A1 EP2714998 A1 EP 2714998A1 EP 12731065 A EP12731065 A EP 12731065A EP 2714998 A1 EP2714998 A1 EP 2714998A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- thickness
- pan
- soil
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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 field of the manufacture of retaining walls in the ground, and retaining structures consisting of several retaining walls.
- the invention relates more particularly to a method of manufacturing a retaining wall using an on-site mixing technique of the ground drilled to a binder (in English: soil-mixing).
- this technique consists in mixing the ground in place with a binder in order to constitute elements of treated soil, having mechanical and / or geotechnical characteristics higher than those of the untreated natural ground.
- adapted tools are used, such as those described in documents WO 2007/116178 or FR 2 879 632.
- the material resulting from mixing the soil in place with the binder has the advantage of requiring fewer natural resources for its preparation.
- the material obtained is the result of a mixture, it has characteristics very different from those of a concrete: this material is much less resistant, it is very heterogeneous, has microporosities and does not protect as much as a concrete any reinforcement that may be in the raw wall.
- a big difference between concrete and the material resulting from mixing is its porosity. While a concrete will have a porosity of between 5 and 15% by volume, a soilmix material will have a porosity of between 30 and 65%. It is known that the greater the porosity of a material, the greater the kinetics of alteration of said material.
- the aforementioned microporosity which is four to five times greater than that of a concrete, causes, when the sol-binder material is exposed to the air, desiccation and carbonation phenomena which degrade the mechanical characteristics of the material.
- a disadvantage of this solution is to considerably increase the thickness of the wall of a retaining structure, which causes a loss of space available inside the structure. For example, when the retaining structure is in an underground car park, it is understood that the volume available to achieve the parking would be significantly reduced because of the significant thickness of the walls, which is not desirable.
- JP 2001 032235 describes a similar process in which a layer of concrete is applied to the pan uncovered to prevent erosion of the banks of a channel.
- An object of the invention is to propose a method of manufacturing a retaining wall from a raw wall obtained by means of an on-site mixing technique of ground drilled with a binder, in which the wall
- the retaining wall can be integrated into a retaining structure, particularly in an underground car park, without significantly increasing the thickness of the gross wall.
- the invention achieves its object by the fact that the method according to the invention comprises:
- a step of producing a gross wall in a soil comprising a step of drilling a trench in the ground and a step of simultaneous mixing of the soil in place with a binder; • a step of excavating a volume of soil adjacent to the gross wall so as to discover a portion of the gross wall; characterized in that it further comprises:
- a retaining wall whose thickness is not very different from that of the raw wall.
- the application of the protective treatment product does not substantially modify the thickness of the wall.
- the protective treatment product is intended to treat and protect the excavated pan (exposed and exposed to air) of the raw wall which is made in a soil-binder mixture, this binder preferably comprising a cement .
- the protective treatment product makes it possible for the sol-binder material to retain its mechanical and physicochemical properties, even when said material is exposed to air.
- the protective treatment product is not intended to take mechanical stresses on the retaining wall.
- the polymeric product is preferably a resin, preferably an epoxy resin.
- the products which cover and / or clog the sol-binder material are preferably applied in a thin layer (polyamine or epoxy type resin);
- the thickness of the retaining wall is at most equal to 105% of the thickness of the thickness of the raw wall.
- the thickness of a rough wall made with a drilling technique and simultaneous mixing of the soil in place with a binder is between 400 and 1000 millimeters. If the bulk wall has a thickness of about 500 millimeters, then the thickness of the retaining wall is at most equal to 525 millimeters. Even more preferably, the thickness of the retaining wall will be at most equal to 103% of the thickness of the raw wall, that is to say at most equal to 515 millimeters.
- the step of producing the raw wall further comprises a step of introducing into the trench at least one stiffening element, and this before the solidification of the raw wall.
- This stiffening element is for example a metal section which is inserted into the trench while the soil-binder mixture is still fresh. It allows stiffening and reinforcement of the raw wall.
- the excavation step is carried out.
- a step of planing the pan of the raw wall is also carried out before the treatment step.
- This planing step allows in particular to clean and flatten the pan. It can also make it possible to discover locally or globally said at least one stiffening element when the latter is present.
- the planing can be carried out mechanically and / or hydraulically. It may be followed by a high-pressure washing step.
- the pan is planed according to its thickness, that is to say in a direction perpendicular to the pan, possibly so as to discovering said at least one stiffening element.
- the planing depth is about 10 millimeters.
- the planing of the raw wall has the effect of locally reducing its thickness. Therefore, if the treatment product is of the penetrating type, it is understood that the thickness of the retaining wall may be slightly less than that of the raw wall. It will nevertheless remain substantially equal to the thickness of the raw wall. It is the same if the treatment product layer is less than the planing depth. In these two situations, the thickness of the retaining wall will preferably be at least equal to 95% of the thickness of the raw wall. Preferably, the thickness of the retaining wall is therefore between 95 and 105% of the thickness of the raw wall.
- an outer coating layer is obtained on the pan, the thickness of which is much smaller than the thickness of the raw wall, so that the The thickness of the retaining wall remains substantially equal to that of the raw wall.
- the protective treatment product used here is therefore of the covering type. It may be in particular a resin, for example of the epoxy type, or an emulsion.
- the thickness of the outer coating layer is less than or equal to ten millimeters.
- the protective treatment product is a projectable waterproofing membrane.
- the protective treatment product is a product penetrating into the wall of the raw wall. This penetrating product makes it possible to treat a superficial thickness of the pan of the raw wall without increasing its thickness. It is therefore conceivable that the thickness of the retaining wall will remain approximately equal to that of the raw wall.
- the protective treatment product is applied by brushing or spraying.
- the invention further relates to a retaining wall obtained by the implementation of the method according to the invention, said wall further comprising a stiffening element, and having a pan covered with a polymer product, for example an epoxy resin.
- the invention further relates to a retaining structure, particularly in an underground car park, comprising a plurality of retaining walls according to the invention.
- FIG. 1 illustrates the step of producing the raw wall in the ground by a drilling technique and simultaneous mixing of the soil in place with a binder
- Figure 4 shows the rough wall of Figure 3 after the planing step which allows to discover the stiffening elements
- FIG. 5 is a top view of the planed wall of Figure 4.
- FIG. 8 is a top view of the retaining wall of Figure 7 obtained by the implementation of a first embodiment of the invention, the treatment product used being a covering product;
- FIG. 9 is a top view of the retaining wall of Figure 7 obtained by the implementation of a second embodiment of the invention, the treatment product used being a penetrating product.
- FIG. 1 illustrates the first step of the method of manufacturing a retaining wall according to the invention: first of all a rough wall 10 in the soil S using a suitable tooling 12.
- this rough wall 10 is made by a soil-mixing technique, that is to say by drilling and simultaneously mixing the soil in place with a binder injected into the trench.
- This raw wall can be made by a continuous or discontinuous process.
- the tool described in document WO 2007/116178 may be used.
- the binder used is a cement. It will also be possible to use a grout, these types of binder being well known elsewhere.
- the rough wall 10, made of a sol-binder material (sol-cement) may have a circular shape, prismatic, or any other shape.
- the rough wall 10 has a height H, a length L and a thickness el.
- the rough wall 12 has a thickness of about 500 millimeters, and a height H of about 11 meters.
- the rough wall 10 is surrounded by the ground S.
- a step is introduced in the trench with a plurality of stiffening elements 14.
- three metal sections the length of which, in this example, are introduced vertically side by side. , corresponds approximately to the height H of the bulk wall 10.
- the introduction of such stiffening elements may not be necessary even if it is preferable in the example described here.
- the profiles can be placed at the edge of the trench side dig, but not necessarily.
- an excavation step is performed in which a volume of soil adjacent to the rough wall 10 is excavated so as to reveal a portion 16 of the rough wall 10.
- the excavation step is performed on a vertical depth P less than the height of the raw wall, for example about 6 meters.
- a step of mechanical planing of the pan is then carried out according to its thickness, in order to discover the stiffening elements 14, and to remove the sol-binder material which has been in contact with the surrounding terrain S.
- a planed raw wall having a thickness e2 is then obtained, underlining that the planing is carried out on the entire surface of the excavated pan.
- the planing is preferentially, but not necessarily, carried out until to reach the metal profiles 14.
- planing the pan is made to a depth e3 of about 10 millimeters.
- the thickness e2 is therefore approximately equal to 490 millimeters.
- a planed rough wall treatment step 10 is then carried out during which a protective treatment product is applied to said pan 16.
- the treatment step can be performed by spraying the protective treatment product on the pan 16. It can also be performed by brushing when the treatment product is a coating.
- the protective treatment product can either cover in a thin layer, or impregnate the pan to be treated.
- the protective treatment product used is a covering product, so that, at the end of the step treatment of Figure 6, one obtains on the pan 12 an outer coating layer 18 whose thickness e4 is much smaller than the thickness el of the bulk wall 10.
- the thickness e4 of the layer outer coating 18 is about eight millimeters.
- the retaining wall 20 whose thickness e5 is about 498 millimeters.
- the thickness e5 of the retaining wall 20 thus obtained is substantially equal to the thickness e 1 of the raw wall 10.
- a polymeric product for example an epoxy resin
- Other types of coatings or resins may be used, especially from the products described above. .
- the protection treatment product used is a penetrating product that impregnates the pan 16 of the wall to be treated.
- the penetrating treatment product is applied by brushing. Therefore, the application of this penetrating treatment product does not increase, or very little, the thickness e2 of the planed rough wall.
- the thickness e2 of the retaining wall 20 'thus obtained is approximately 490 millimeters, therefore slightly less than the thickness e 1 of the bulk wall. 10. It follows that the thickness e2 of the retaining wall 20 'is between 95% and 105% of the thickness and the gross wall.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL12731065T PL2714998T3 (pl) | 2011-06-01 | 2012-05-25 | Sposób wytwarzania ściany oporowej ze surowej ściany w technice typu soilmixing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1154817A FR2976003B1 (fr) | 2011-06-01 | 2011-06-01 | Procede de fabrication d'une paroi de soutenement a partir d'une paroi brute en soil-mixing |
| PCT/FR2012/051178 WO2012168616A1 (fr) | 2011-06-01 | 2012-05-25 | Procede de fabrication d'une paroi de soutenement a partir d'une paroi brute en soil-mixing. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2714998A1 true EP2714998A1 (fr) | 2014-04-09 |
| EP2714998B1 EP2714998B1 (fr) | 2018-12-26 |
Family
ID=46420381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12731065.4A Active EP2714998B1 (fr) | 2011-06-01 | 2012-05-25 | Procede de fabrication d'une paroi de soutenement a partir d'une paroi brute en soil-mixing. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9428879B2 (fr) |
| EP (1) | EP2714998B1 (fr) |
| AU (1) | AU2012266120B2 (fr) |
| CA (1) | CA2837506C (fr) |
| FR (1) | FR2976003B1 (fr) |
| PL (1) | PL2714998T3 (fr) |
| WO (1) | WO2012168616A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423893B (zh) | 2018-12-21 | 2023-03-14 | 特里姆科有限责任公司 | 建筑物地基系统 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893302A (en) * | 1973-10-25 | 1975-07-08 | Rapidex Inc | Machine and method for excavating trenches and for constructing walls in trenches |
| DE2546946A1 (de) * | 1975-10-20 | 1977-04-28 | Eurosond Gmbh Spezialunternehm | Verfahren zum herstellen einer dichtungsschlitzwand im untergrund |
| JPS5883729A (ja) * | 1981-11-11 | 1983-05-19 | Ohbayashigumi Ltd | 泥水固化連続壁の乾燥防止方法 |
| FR2526825B1 (fr) | 1982-05-14 | 1986-05-30 | Soletanche | Element pour la realisation de panneaux de parois moulees dans le sol, parois comportant un tel element et procede pour la realisation d'une telle paroi |
| BE899304A (fr) | 1984-03-30 | 1984-07-16 | Sotrin S A | Mise en place sous pression d'un film d'etancheite pour les parois verticales et horizontales des ouvrages enterres. |
| DE3504161A1 (de) | 1985-02-07 | 1986-08-07 | Frankipfahl Baugesellschaft mbH, 4000 Düsseldorf | Verfahren zur herstellung von wandfoermigen bauwerken im erdreich und bewehrungsplatte zur durchfuehrung des verfahrens |
| JPS62133210A (ja) * | 1985-12-06 | 1987-06-16 | Sumitomo Kensetsu Kk | 遮水壁形成方法 |
| US4909674A (en) * | 1987-05-28 | 1990-03-20 | Kajima Corporation | Underground continuous impervious wall and method for installing same |
| JPH0739652B2 (ja) * | 1992-04-01 | 1995-05-01 | 北辰工業株式会社 | 地中連続壁用掘削装置と地中連続壁工法 |
| JPH07113214B2 (ja) * | 1992-04-01 | 1995-12-06 | トーメン建機株式会社 | 地中連続壁用掘削装置とその装置を使用する工法 |
| DE4343851C1 (de) | 1993-12-22 | 1995-06-29 | Bauer Spezialtiefbau | Ortbetonschlitzwand mit Abdichtungsmembran |
| DE19526396C2 (de) | 1995-07-19 | 2000-11-02 | Dyckerhoff Ag | Baugrubenverbau, Verfahren zu seiner Herstellung sowie Baustoffgemenge dafür |
| DE29823360U1 (de) * | 1998-12-22 | 1999-05-20 | Bauer Spezialtiefbau Gmbh, 86529 Schrobenhausen | Wasserdichte Flächenbewehrung in Schlitzwänden, Dichtwänden und Abdichtungswänden aus Mörtelsäulen nach dem "Mixed-in-Place"-Verfahren |
| JP3724986B2 (ja) * | 1999-07-19 | 2005-12-07 | 松尾建設株式会社 | 水路法面の構築方法 |
| GB2371069B (en) * | 2001-01-15 | 2004-09-08 | Cementation Found Skanska Ltd | Waterstop for foundation elements |
| JP2005105727A (ja) * | 2003-10-01 | 2005-04-21 | Chem Grouting Co Ltd | 連壁工法 |
| JP4438536B2 (ja) | 2004-07-06 | 2010-03-24 | 株式会社大林組 | 壁パネル接合構造、地中連続壁の構築方法、および地中連続壁 |
| FR2879632B1 (fr) | 2004-12-17 | 2007-04-20 | Cie Du Sol Soc Civ Ile | Procede de realisation de parois moulees |
| FR2899608B1 (fr) * | 2006-04-06 | 2010-04-16 | Cie Du Sol | Outillage de forage |
| JP2008196212A (ja) * | 2007-02-14 | 2008-08-28 | Shimizu Corp | 地盤振動伝播抑制構造およびその構築方法 |
| JP5300842B2 (ja) * | 2007-05-31 | 2013-09-25 | カーター,アーネスト・イー,ジユニア | 地下障壁を構成するための方法 |
| US8079163B2 (en) * | 2007-07-30 | 2011-12-20 | Vladimir Anatol Shreider | Excavator and a method for constructing an underground continuous wall |
-
2011
- 2011-06-01 FR FR1154817A patent/FR2976003B1/fr not_active Expired - Fee Related
-
2012
- 2012-05-25 EP EP12731065.4A patent/EP2714998B1/fr active Active
- 2012-05-25 WO PCT/FR2012/051178 patent/WO2012168616A1/fr not_active Ceased
- 2012-05-25 US US14/123,101 patent/US9428879B2/en active Active
- 2012-05-25 PL PL12731065T patent/PL2714998T3/pl unknown
- 2012-05-25 CA CA2837506A patent/CA2837506C/fr not_active Expired - Fee Related
- 2012-05-25 AU AU2012266120A patent/AU2012266120B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012168616A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2012266120B2 (en) | 2017-08-10 |
| CA2837506C (fr) | 2018-03-27 |
| FR2976003A1 (fr) | 2012-12-07 |
| US9428879B2 (en) | 2016-08-30 |
| PL2714998T3 (pl) | 2019-07-31 |
| US20140219729A1 (en) | 2014-08-07 |
| WO2012168616A1 (fr) | 2012-12-13 |
| CA2837506A1 (fr) | 2012-12-13 |
| FR2976003B1 (fr) | 2021-01-29 |
| AU2012266120A1 (en) | 2014-01-09 |
| EP2714998B1 (fr) | 2018-12-26 |
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