A soil body constitutive simulation calculation method and system

By conducting cyclic single shear tests and iterative solutions on cohesive soil, a soil constitutive model was established, which solved the problem of inaccurate soil constitutive simulation in the existing technology and realized more accurate calculation of soil-structure interaction.

CN112632674BActive Publication Date: 2026-07-21CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
Filing Date
2020-12-22
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies, when studying the impact of foundation deformation on the vibration of the superstructure of electrical equipment, fail to accurately calculate the constitutive model of the soil, resulting in large discrepancies between the calculated results and the actual situation, and neglecting the deformation coordination and energy exchange between the foundation and the structure.

Method used

By conducting cyclic single shear tests on cohesive soil, a constitutive model of the soil was established, and the dynamic shear modulus and damping ratio were obtained. Based on the experimental data of the contact between the soil and the transformer mechanism, the optimal state variables were determined and the maximum dynamic shear modulus of the soil was calculated.

Benefits of technology

It improves the accuracy of soil constitutive simulation calculations, takes into account the three-dimensional interaction between soil and structure, is applicable to engineering practice, and yields more accurate calculation results.

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Abstract

The application provides a soil body constitutive simulation calculation method and system, comprising the following steps: establishing a constitutive model of a soil body by performing a cyclic simple shear test on a cohesive soil body; obtaining each level of shear strain and corresponding dynamic shear modulus of the soil body; fitting a dynamic constitutive model of the soil body to obtain an equivalent linear viscoelastic constitutive model; iteratively solving the equivalent linear viscoelastic constitutive model based on elastic boundary conditions of the soil body and experimental data of the contact between the soil body and a transformer mechanism to obtain optimal state variables; and determining the maximum dynamic shear modulus of the soil body based on the optimal state variables. The application considers the influence of the interaction between the soil body and the transformer, the calculation model relies on the parameter values of the test results, and the calculation credibility is high. The influence of the cohesive soil body is considered, the calculation model is suitable for three-dimensional soil and structure models, and is closer to the engineering practice.
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