EP1925748A2 - Verfahren zum Herstellen einer Stützmauer und die hiermit hergestellte Stützmauer - Google Patents

Verfahren zum Herstellen einer Stützmauer und die hiermit hergestellte Stützmauer Download PDF

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Publication number
EP1925748A2
EP1925748A2 EP20070120394 EP07120394A EP1925748A2 EP 1925748 A2 EP1925748 A2 EP 1925748A2 EP 20070120394 EP20070120394 EP 20070120394 EP 07120394 A EP07120394 A EP 07120394A EP 1925748 A2 EP1925748 A2 EP 1925748A2
Authority
EP
European Patent Office
Prior art keywords
wall parts
primary
wall
ground
parts
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.)
Withdrawn
Application number
EP20070120394
Other languages
English (en)
French (fr)
Inventor
Gerdi Vankeirsbilck
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.)
Olivier Funderingstechnieken Nv
Original Assignee
Olivier Industrie NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olivier Industrie NV filed Critical Olivier Industrie NV
Publication of EP1925748A2 publication Critical patent/EP1925748A2/de
Withdrawn legal-status Critical Current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
    • E02D17/20—Securing of slopes or inclines

Definitions

  • This invention relates, on the one hand, to a method for forming a wall comprising primary wall parts and secondary wall parts formed in the ground.
  • This invention relates, on the other hand, to a wall formed by such a method.
  • Such walls can be used as earth-retaining structures and/or as screens, for example as water screens, or for fencing in landfill sites and the like.
  • the construction of this wall is necessary, for example, when a foundation pit is being formed, for example such as that for the construction of an underground car park, in order to stabilize the walls of the foundation pit. This is to ensure that the ground does not subside in the area surrounding the foundation pit, which could result in the stability of buildings or structures on adjacent sites being endangered.
  • sheet piling In most applications the formation of such an earth-retaining wall is referred to as "sheet piling".
  • piling walls in the ground. This involves forming individual piles by first drilling a hole in the ground and then filling up this hole with concrete or another hardening product or mixture.
  • a series of primary piles will be placed next to one another at regular intervals from each other on the line where the wall is to be formed.
  • a reinforcement is provided in the concrete.
  • a number of secondary piles (at least one pile) will then be placed between each pair of primary piles.
  • the secondary piles are made of non-reinforced concrete.
  • the secondary piles When the secondary piles are being formed, it is possible to choose to remove some of the primary piles.
  • the secondary piles can, however, also be provided so that they are in contact with the primary piles. These are referred to as secant and tangent piling walls respectively.
  • Forming retaining walls in such a way means that the quantity of soil to be taken away is reduced, while no concrete needs to be brought in either.
  • a major disadvantage is, however, that the quality (strength) of such a wall can never be the same as the quality of a piling wall made of concrete.
  • Another known alternative is to form a wall making use of a soil-mix diaphragm wall cutter or a similar mixing device.
  • a mixture is also made of soil (earth) and binder such as cement, for example, in order to form the wall, but a device that can form larger wall parts in one go is used here.
  • a hole with a circular section a hole with a substantially rectangular section is made.
  • primary wall parts are made first, and secondary wall parts are subsequently placed between said primary wall parts.
  • the object of this invention is to provide a method by means of which it becomes possible to form a wall with which the above said disadvantages of the prior art are solved.
  • the object of the invention is in particular to provide a method by means of which a strong wall can be formed with less of a need than with the known systems for additional anchoring and/or strutting.
  • the object of the invention is achieved by providing a method for forming a wall comprising primary wall parts and secondary wall parts formed in the ground, the above said method comprising the following steps:
  • This method has the advantage that the walls formed in the ground can be formed much more quickly than the walls known until now, in particular compared with piling walls. This method has the additional advantage that there is little bringing in and taking away of concrete, and walls formed in this way require less strutting and/or anchoring.
  • the above said primary wall parts have a substantially circular cross section.
  • the above said secondary wall parts have a substantially rectangular cross section.
  • the primary wall parts and/or the secondary wall parts preferably comprise reinforcement elements.
  • Traditional reinforcement sections, an H section or a cage of reinforcement are generally used as reinforcement elements.
  • the primary wall parts extend to a depth that is virtually the same as the depth of the secondary wall parts.
  • the secondary wall parts extend to less of a depth than the depth of the primary wall parts.
  • the depth of the secondary wall parts will be determined by the groundwater level and/or the depth of the earth-retaining structure.
  • This method of working makes it possible to calculate the wall and design it as a sort of Berlin wall.
  • a Berlin wall is a sheet pile wall construction made up of steel sections which are inserted with regular spacing by means of pile driving or vibration. Steel partitions are placed between the sections, or wood or concrete partitions are pushed between them during the excavation.
  • the primary and secondary wall parts comprise connecting means for joining together abutting wall parts.
  • the above said connecting means preferably comprise first and second complementary connecting means, the first connecting means comprising one or more recesses, and the second connecting means comprising a projection fitting into each recess.
  • the primary wall parts comprise a ground anchor.
  • the device for forming the secondary wall parts is designed in such a way that the recesses provided in the primary wall parts, for example, are made during the formation of the secondary wall parts.
  • Another subject of this invention relates to a wall comprising primary wall parts and secondary wall parts formed in the ground, the wall formed comprising at least two spaced concrete primary wall parts, and the secondary wall parts consisting of mechanically loosened soil mixed with a hardening binder.
  • the primary wall parts are formed by drilling a circular space in the ground, the soil material being removed from the space and this cleared space then being filled up with concrete.
  • the above said wall according to the invention is produced by the method described above.
  • This invention relates to a new method for forming a wall comprising primary wall parts (1) and secondary wall parts (2) formed in the ground, the above said method comprising the following steps:
  • the primary wall parts (1) have a substantially circular cross section and are formed next to each other at regular intervals of, for example, 1 to 3 metres by the known techniques. Such primary wall parts are preferably made of concrete. Common diameters for such primary wall parts (1) are between 30 cm and 1 metre.
  • the secondary wall parts (2) have a substantially rectangular cross section with a length of between 1 and 3 metres and a thickness of 40 to 50 cm.
  • the forces exerted on the wall by the ground are largely absorbed by the primary wall parts (1).
  • These primary wall parts (1) provide sufficient strength to withstand said forces.
  • the primary wall parts (1) first and then place the secondary wall parts (2) between them (referred to below as method 1), or to produce the secondary wall parts (2) first and then form the primary wall parts (1) between them (referred to below as method 2).
  • the secondary wall parts (2) lying between the primary wall parts can extend to less of a depth than that of the primary wall parts (1).
  • the wall can actually be calculated and produced as a sort of Berlin wall.
  • the depth of the wall parts (2) in between depends on the groundwater level and/or the depth of the earth-retaining structure etc.
  • the primary wall parts (1) and secondary wall parts (2) comprise connecting means (4) operating on the tongue and groove principle, for the purpose of joining together abutting wall parts.
  • connecting means (4) operating on the tongue and groove principle, for the purpose of joining together abutting wall parts.
  • grooves or notches are formed in the primary wall parts (1), and the secondary wall parts (2) connecting to said wall parts (1) are given a complementary shape which engages in said grooves or notches. In this way the mutual anchoring of the primary wall parts (1) and secondary wall parts (2) is improved and a watertight retaining wall is obtained.
  • a ground anchor can be provided through the primary wall parts (1) with reinforcement, or there can be additional strutting at the level of said primary wall parts (1).
  • Primary wall parts (1) are drilled spaced apart in the ground with the necessary reinforcement (Fig. 4a). This is performed on the first day of working. On the following day the parts between are filled up in the ground by using a soil-mix diaphragm wall cutter or similar type of mixing device to insert them into the ground by cutting or drilling, mixing the soil with cement, and in this way forming a secondary wall part (2) (Fig. 4b), cutting into the primary wall parts (1) next to them or otherwise.
  • the primary wall parts (1) also serve to guide the cutter into the ground, so that an additional guide runner does not have to be cast in the ground beforehand (unlike the procedure of method 2).
  • the secondary wall parts (2) can be reinforced or otherwise, depending on the pressure which the wall has to absorb.
  • secondary wall parts (2) are formed in the ground using a soil-mix diaphragm wall cutter or similar type of mixing device (Fig. 5a). These secondary wall parts may be reinforced or otherwise.
  • the primary wall parts (1) formed in the ground and the technique with the soil-mix diaphragm cutter or similar type of mixing device By means of the combination of the primary wall parts (1) formed in the ground and the technique with the soil-mix diaphragm cutter or similar type of mixing device, a very stable wall is obtained.
  • the system is very flexible.
  • the primary wall parts (1) can be adapted in length and diameter and provided with the necessary reinforcement. The spaces between them can also vary.
  • the secondary wall parts (2) can also be adapted in width and depth to the circumstances.
  • the secondary wall parts (2) can be inserted to any depth with the soil-mix diaphragm cutter. The process is very quick and there is very little soil to be taken away.

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)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP20070120394 2006-11-22 2007-11-09 Verfahren zum Herstellen einer Stützmauer und die hiermit hergestellte Stützmauer Withdrawn EP1925748A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2006/0566A BE1017368A5 (nl) 2006-11-22 2006-11-22 Werkwijze voor het vormen van een keerwand en een volgens dergelijke werkwijze gevormde keerwand.

Publications (1)

Publication Number Publication Date
EP1925748A2 true EP1925748A2 (de) 2008-05-28

Family

ID=37964705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070120394 Withdrawn EP1925748A2 (de) 2006-11-22 2007-11-09 Verfahren zum Herstellen einer Stützmauer und die hiermit hergestellte Stützmauer

Country Status (2)

Country Link
EP (1) EP1925748A2 (de)
BE (1) BE1017368A5 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429126A (en) * 1966-01-21 1969-02-25 Gino Wey Method of producing a continuous bore pile wall
JPS58189414A (ja) * 1982-04-10 1983-11-05 Masato Ohori 山留め壁構築方法
JPS6065824A (ja) * 1983-09-22 1985-04-15 Asuku Kenkyusho:Kk 親杭を有する山止め壁の造成方法
US4537536A (en) * 1983-10-18 1985-08-27 The Shimizu Construction Co., Ltd. Process and apparatus of constructing a water tight underground pile wall
DE59402603D1 (de) * 1994-02-08 1997-06-05 Rudolf Georg Hofinger Verfahren zur Abdichtung von Schlitzwänden
US6241426B1 (en) * 1999-05-25 2001-06-05 Aerial Industrial, Inc. Method for forming an interconnected underground structure

Also Published As

Publication number Publication date
BE1017368A5 (nl) 2008-07-01

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