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Method for calculating the stability of groove wall of underground diaphragm wall of limited-width soil body

An underground diaphragm wall and calculation method technology, applied in the direction of electrical digital data processing, instrumentation, geometric CAD, etc., can solve the problems of loss of stability and small width of the groove wall of the underground diaphragm wall, and achieve scientific and reasonable guidance for construction and high application value Effect

Pending Publication Date: 2020-07-03
CHINA RAILWAY NO 2 ENG GRP CO LTD +2
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Problems solved by technology

The finite width of the soil body is small, and it is easy to cause the stability of the underground diaphragm wall to lose stability.
In engineering, the groove wall of the underground diaphragm wall is often reinforced to ensure the stability of the groove wall, but there is no corresponding and practical calculation method. Therefore, a limited method is provided for the stability of the underground diaphragm wall groove wall in limited width soil. Calculation method for groove wall stability of diaphragm wall in wide soil

Method used

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  • Method for calculating the stability of groove wall of underground diaphragm wall of limited-width soil body
  • Method for calculating the stability of groove wall of underground diaphragm wall of limited-width soil body
  • Method for calculating the stability of groove wall of underground diaphragm wall of limited-width soil body

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] refer to Figure 1-4 As shown, the present invention provides a method for calculating the stability of a finite-width soil underground diaphragm wall, wherein the finite-width soil 3 is the distance between the existing structure 1 and the new underground diaphragm wall 2, and the calculation method includes the following step:

[0032] Step 1. Obtain the internal friction angle of the finite width soil body 3 through the geological survey report Cohesion d, the width d of the finite width soil body 3 is obtained through on-site measurement;

[0033] Step 2. Calculate the safety factor F s and the maximum displacement Δ of the excavation surface:

[0034] (1) The calculation of the influence of the cohesion difference of the finite width soil body 3 before and after reinforcement and the friction angle in the soil body on the stability of the groove wall is...

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Abstract

The invention discloses a method for calculating the stability of a groove wall of an underground diaphragm wall of a limited-width soil body, and the method is characterized in that the method comprises the following steps: 1, obtaining the cohesive force d of an internal friction angle of the limited-width soil body through a geological exploration report, and obtaining the width d of the limited-width soil body through on-site measurement; 2, calculating the safety factor Fs and the maximum displacement delta of the excavation face; and 3, evaluating the safety through the safety factor Fsand the maximum displacement delta of the excavation face. According to the calculation method, the stability of the groove wall of the limited-width soil underground diaphragm wall can be accuratelycalculated, and construction can be scientifically and reasonably guided.

Description

technical field [0001] The invention relates to a method for calculating the stability of a groove wall of an underground diaphragm wall of a finite soil mass, which belongs to the technical field of geotechnical engineering and is suitable for calculating the stability of the groove wall of an underground diaphragm wall of a soil mass within a limited range. Background technique [0002] With the continuous development of engineering construction to the underground space, many newly-built underground diaphragm walls are adjacent to existing underground structures. The soil mass is called finite width soil mass. The finite width of the soil body is small, and it is prone to the problem of loss of stability of the underground diaphragm wall. In engineering, the groove wall of the underground diaphragm wall is often reinforced to ensure the stability of the groove wall, but there is no corresponding and practical calculation method. Therefore, a limited method is provided for...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F119/14
Inventor 游敬杰彭杰罗川汪万杰朱彦臻
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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