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Method of controlling foundation ditch deformation breaking up whole into parts

A technology that can be divided into parts and foundation pits is applied in the field of controlling the deformation of foundation pits and controlling the deformation of foundation pits into parts. Effect

Inactive Publication Date: 2004-07-21
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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Problems solved by technology

However, this method also has shortcomings. Under the guidance of this method, the foundation pit is excavated by vertical layering and segmental grading. If the soil is soft or overloaded, engineering accidents such as longitudinal landslides will easily occur in the foundation pit.
In further literature search, have not yet found to have identical or similar literature report with the subject of the present invention

Method used

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Embodiment Construction

[0019] 1. Project introduction and surrounding environment

[0020] After a subway station is completed, it transfers in parallel with another subway station that is already in operation. The maximum distance between the two stations is only 5.4m, and the two stations share the diaphragm wall of the original station structure at the west end of the well; the old station is a two-story underground station with an excavation depth of about 14m, while the new station is three-story underground with a maximum excavation depth 22.866m.

[0021] According to the "Shanghai Metro Foundation Pit Construction Regulations" (SZ-08-2000), the protection level of the foundation pit project of this station is Class I, that is, the maximum horizontal displacement of the enclosure wall is 0.14%H, and the maximum surface settlement is 0.1%H. The maximum excavation depth of the foundation pit is 22.866m, so the maximum horizontal displacement of the enclosure wall and the maximum surface settle...

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Abstract

A method for controlling the deformation of foundation pit features that the partition walls are built up in a big foundation pit to divide it into several small ones and said small foundation pits are alternatively constructed at different time segments. Its advantages are high constructing speed and high effect.

Description

technical field [0001] The invention relates to a method for controlling the deformation of a foundation pit, in particular to a method for controlling the deformation of a foundation pit which requires extremely high protection of the surrounding environment. It belongs to the field of construction engineering. Background technique [0002] With the continuous and rapid development of the economy, a new round of development and construction climax has appeared in my country's urban construction, and the development and utilization of underground space is the top priority in urban construction. Foundation pit construction is an important form of underground space development. For example, underground garages, subway stations, subway tunnels, underground shopping malls, etc. can all be formed by foundation pit excavation. At present, especially in the construction of foundation pits near dense structures in the city center, the construction environment is complex, and the pr...

Claims

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Application Information

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IPC IPC(8): E02D17/02
Inventor 白云董海斌张志勇曹荫裕杜毅陈少波黄海滨
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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