Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Huaiyuan Chen; Qiang Ma

doi:10.1590/1679-78257962

Dynamic response analysis of layered saturated frozen soil foundation subjected to moving loads

Authors

Huaiyuan Chen School of Civil Engineering and Water Resources, Qinghai University, Xining 810016, China https://orcid.org/0009-0006-2025-4130
Qiang Ma Qinghai Provincial Key Laboratory of Energy-saving Building Materials and Engineering Safety, Xining 810016, China https://orcid.org/0000-0002-5692-3782

DOI:

https://doi.org/10.1590/1679-78257962

Abstract

Based on the theory of solid porous media with pores, the dynamic response of layered saturated frozen soil under uniform moving load is studied. Firstly, the governing equation of saturated frozen soil is established. Then, the Fourier integral transform is used to decouple the governing equation of saturated frozen soil, and the general solution of the potential function is obtained, and the corresponding force and displacement of each layer of saturated frozen soil are derived. Finally, using the transfer matrix method, combined with the continuous condition, the semi-analytical solution of the layered saturated frozen soil medium in the frequency domain under the surface permeable condition is derived. After verifying the accuracy of the solution by comparing the model degradation with the existing literature, the effects of soil shear modulus, load moving speed, temperature, contact parameter and frequency on the dynamic response are analyzed in detail. The results show that the order of soft and hard soil layers is of great significance to accurately evaluate the dynamic response of saturated frozen soil.

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Published

2024-01-26

Issue

Vol. 21 No. 2 (2024)

Section

Articles

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