A Displacement Calculation Method of Flexible Cantilever Retaining Wall in Multilayer Soil Under Earthquake
A flexible cantilever, displacement calculation technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve problems such as the destruction of flexible cantilever retaining walls, achieve good popularization and application value, enhance safety design, calculation method step-by-step effect
Active Publication Date: 2022-04-22
EAST CHINA JIAOTONG UNIVERSITY
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[0004] The purpose of the present invention is, in order to solve the existing problem of the damage of the flexible cantilever retaining wall in the multi-layer soil caused by the earthquake, and propose a displacement calculation method for the flexible cantilever retaining wall in the multi-layer soil under the earthquake
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[0075] The specific implementation process of the method for calculating the displacement of a flexible cantilever type retaining wall in multi-layer soil under earthquake action of the present invention is as follows figure 1 shown. Its calculation process is as follows:
[0076] (1) Divide the soil layer and the retaining wall into several layers, and determine the displacement field formula of the flexible cantilever retaining wall-soil system after the seismic wave is vertically incident;
[0077] (2) Determine the free field displacement of the soil under the action of vertically incident seismic waves in the layered soil;
[0078] (3) The displacement control equation of the flexible cantilever retaining wall is deduced by the variational method;
[0079] (4) Deduce the attenuation function of the flexible cantilever retaining wall-soil dynamic interaction;
[0080] (5) The attenuation factor γ is solved iteratively, and then the attenuation function and the displacem...
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A method for calculating the displacement of a flexible cantilever retaining wall in multi-layered soil under earthquake action, the steps are as follows: (1) Determine the displacement field formula of the flexible cantilever retaining wall-soil system after the seismic wave is vertically incident; (2) Determine the layered The free field displacement of the soil under the action of vertically incident seismic waves in the soil; (3) deduce the governing equation of the displacement of the flexible cantilever retaining wall; (4) derive the attenuation function of the dynamic interaction between the flexible cantilever retaining wall and soil; ( 5) Solve the attenuation factor γ , and then get the attenuation function and the displacement function of the retaining wall, and solve the displacement field formula of the flexible cantilever retaining wall-soil system. The present invention extends the calculation method for the displacement of the flexible cantilever retaining wall under earthquake action from the case of single-layer soil to multi-layer soil, uses the Vlasov foundation model to accurately solve the displacement function of the flexible cantilever retaining wall in multi-layer soil under earthquake action, and enhances It has improved the safety design of retaining walls for engineering personnel, and has good promotion and application value.
Description
technical field [0001] The invention relates to a method for calculating the displacement of a flexible cantilever type retaining wall in multi-layered soil under earthquake action, belonging to the technical field of civil engineering. Background technique [0002] With the development of social economy and the improvement of people's living standards, the shortage of ground space land has become increasingly prominent. The development and utilization of underground space has become an important measure to solve the shortage of ground space. Therefore, more and more urban foundation pit projects are being constructed. Flexible cantilever retaining wall is an important supporting structure in geotechnical engineering, which can ensure the stability of the soil behind the wall, and is often used as a supporting structure for foundation pit excavation. Soil in nature is mainly distributed in layers, and seismic waves will be refracted and reflected when passing through the lay...
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IPC IPC(8): G06F30/13G06F30/20
CPCG06F30/13G06F30/20
Inventor 可文海管凌霄虞巍巍彭泽文徐长节
Owner EAST CHINA JIAOTONG UNIVERSITY