Calculation Method of Additional Stress in Layered Medium Foundation in Subsidence Area Based on Transfer Matrix Method

Abstract

An embodiment of the present invention provides a method for calculating the additional stress of layered medium foundations in subsidence areas based on the transfer matrix method. The foundation model calculates the additional stress component of the first layer medium in the plurality of layered media; according to the strain potential energy conservation condition and the vertical additional stress balance condition, solve the coefficient in the additional stress component expression of the second layer medium , put the coefficient into the expression of the additional stress component to obtain the additional stress component of the second layer medium; based on the transfer matrix method, solve The additional stress components of other layers of media other than the first layer of media and the second layer of media. The embodiment of the present invention is more in line with the actual situation, and improves the accuracy and calculation speed of the additional stress calculation.

Description

technical field [0001] The invention belongs to the technical field of foundation additional stress calculation, in particular to a method for calculating additional stress of layered medium foundation in a subsidence area based on a transfer matrix method. Background technique [0002] Additional stress is the stress increment generated in the foundation soil under the action of external loads, such as building loads and vehicle loads, and is the main cause of foundation deformation. Before the building is built on the surface of the subsidence area, the foundation soil already has vertical stress from the weight of the building itself. After the building is built, the building load is transferred to the foundation through the bottom surface of the foundation, and additional stress is generated in the foundation soil. At present, the calculation methods for the additional stress of the foundation mainly include the diffusion angle method of the additional stress, the Winkle...

AI Technical Summary

Problems solved by technology

At this time, the rock and soil layer below the foundation is regarded as a homogeneous, isotropic, and single layer of medium, and the calculation of the additional stress of the foundation leads to inaccurate calculation of the additional stress

If a building is built with reference to the additional stress solved by this assumption, it will bring certain safety hazards to the ground construction project, affect the safe use of the building, and threaten the personal and property safety of users.

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