Deformation calculation method and application technology of foundation soil under large foundation

Abstract

The invention discloses a deformation calculation method and application technology of foundation soil under a large foundation, comprising the following steps: S1, creating a plane grid system: specifically, on the base elevation plane, the foundation under the test area is divided into Several identical sub-domains, when the number of sub-domains is large enough, the effective additional stress acting on each sub-domain can be equivalent to a concentrated force, and the action point of the concentrated force is located in the center of the sub-domain; S2. Establish foundation soil deformation calculation Model; S3, calculating the compressive modulus Es of the foundation soil, and solving the vertical deformation value. The deformation calculation method and application technology of the foundation soil under the large-scale foundation described in the present invention, the calculation model of the deformation of the layered foundation soil under the large-scale foundation, are applied to the foundation deformation under the large-scale foundation (such as raft-shaped foundation, structural plate expansion foundation, etc.) Calculation and prediction, solving the nonlinear loading problem of the base plane, and the deformation space distribution of each layered plane, solving the defects of the traditional single-point calculation, and the calculation results are more intuitive.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, and relates to a method for calculating deformation of foundation soil under a large foundation. The technology is applied to the calculation and prediction of foundation deformation under a large foundation. Background technique [0002] Several commonly used methods for calculating foundation deformation are: [0003] (1) Stratified sum method [0004] The layered sum method is one of the most commonly used settlement calculation methods in engineering. This method divides the foundation within the compression layer into several layers, uses the elastic theory to calculate the additional stress, and uses certain experimental methods to determine the soil stress of each layer. Strain relationship, the vertical compression is calculated layer by layer, and then summed to obtain the total settlement. [0005] This method assumes that the foundation soil cannot be deformed in the...

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Problems solved by technology

[0017] According to the technical problems raised above, a calculation method and application technology for the deformation of foundation soil under large foundations are provided, which are used to solve the existing methods for calculating foundation deformation. For large, complex and important foundations, such as raft foundations, Structural slab expansion foundation, etc., mistakenly believe that the point of maximum load action is the point of maximum settlement, and the point of maximum load action as the maximum deformation control point has the disadvantage of potential safety hazards

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