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An unbalanced calculation method for a multi-fulcrum enclosure structure of a viscous soil stratum

An envelope structure and cohesive soil technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as consumption, large manpower and material resources, underutilization of support, etc., and achieve a simple calculation method, Reduce waste and promote the effect of application value

Pending Publication Date: 2021-11-02
ZHEJIANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relevant studies have shown that in asymmetrical foundation pits, if the support is designed according to the unfavorable side, the support on the shallower side has not been fully utilized, and the support construction in this way will also consume a lot of manpower and material resources

Method used

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  • An unbalanced calculation method for a multi-fulcrum enclosure structure of a viscous soil stratum
  • An unbalanced calculation method for a multi-fulcrum enclosure structure of a viscous soil stratum
  • An unbalanced calculation method for a multi-fulcrum enclosure structure of a viscous soil stratum

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Embodiment Construction

[0047] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, this embodiment provides a method for non-balanced design of a multi-pivot type enclosure structure in cohesive soil, and the specific steps of the method are as follows:

[0049] S1: Determine the section parameters of the foundation pit and the physical and mechanical parameters of the soil, and determine the model diagram of the enclosure structure and the layout of the internal support.

[0050] Such as figure 2As shown, the profile parameters of an unbalanced foundation pit are as follows:

[0051] The ground elevation of the foundation pit is 0, the elevation of pit bottom 4 in the shallow side excavation area is -6.0m, and the elevation of pit bottom 3 in the deep side excavation area is -8.5m, that is, the depth of deep side excavation H 1 =8.5m, shallow side exca...

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Abstract

The invention discloses an unbalanced calculation method for a multi-fulcrum enclosure structure of a viscous soil stratum, which comprises the following steps: determining profile parameters of a foundation pit and physical and mechanical parameters of a soil body, and determining a model sketch of the enclosure structure and an arrangement form of an inner support; calculating the depth of the deep side enclosure structure, and calculating the active soil pressure acting on the side enclosure structure; correcting the limit soil pressure acting on the shallow side enclosure structure according to the displacement variation of the enclosure structure; according to the same supporting force at the two ends of the inner support, the displacement variation geometrical relationship and the corrected moment balance equation on the shallow side enclosure structure, calculating the shearing force at the inflection point of the shallow side enclosure structure, and determining the effective build-in length of the shallow side enclosure structure and the length of the shallow side enclosure structure. According to the invention, the problem that the shallow side enclosure structure does not fully play a supporting role when the asymmetric foundation pit enclosure structure design is designed according to the design of excavating the deeper side is solved, correction is made on the basis of a traditional equivalent beam method, and the enclosure structures on the two sides can be reasonably designed.

Description

technical field [0001] The invention relates to an unbalanced calculation method of a multi-fulcrum type enclosure structure in a cohesive soil layer, belonging to the technical field of civil engineering. Background technique [0002] In recent years, with the rapid development of my country's economic construction, the development of ground space has become increasingly saturated, and the development and utilization of ground space can no longer meet people's needs. More and more engineering projects have begun to develop underground. Foundation pit related works. Most of the existing foundation pit support research results are for symmetrical foundation pits, and many factors will cause the excavation of foundation pits to be in an asymmetrical situation. [0003] In the actual construction process, for the support design of asymmetrical foundation pits, the unfavorable side is usually calculated and designed according to the provisions of the "Technical Regulations for B...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F30/20G06F2119/14
Inventor 徐长节李欣雨孙佳政杨开放陈刚徐铨彪胡安峰高向向
Owner ZHEJIANG UNIV
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