Research on deformation characteristics of frost heaving and thaw collapse of the high-speed railway subgrade in seasonal frozen areas

Xianxi Tang; Hailong Gan; Yanan Chen

doi:10.1117/12.2614517

10 November 2021 Research on deformation characteristics of frost heaving and thaw collapse of the high-speed railway subgrade in seasonal frozen areas

Xianxi Tang, Hailong Gan, Yanan Chen

Author Affiliations +

Proceedings Volume 12050, International Conference on Smart Transportation and City Engineering 2021; 120504H (2021) https://doi.org/10.1117/12.2614517
Event: 2021 International Conference on Smart Transportation and City Engineering, 2021, Chongqing, China

Abstract

Frost heaving and thaw collapse of the high-speed railway subgrade will greatly affect the operation and maintenance of railways. Taking one section of Lanxin High-speed Railway as the research object, this paper adopted the numerical analysis method on the basis of the existing theoretical calculation models to study the frost-thaw damage and its deformation characteristics of high-speed railway subgrade in seasonal frozen areas. It studied and analyzed the temperature field, moisture field and deformation field of the high-speed railway subgrade in the seasonal frozen area. The results show that the temperature field, moisture field and deformation field inside the subgrade change regularly with temperature at different time nodes. Furthermore, the change of temperature field is the main factor leading to the change of the moisture field, while the coupling of the temperature field and moisture field results in the regular variation of the deformation field in time domain. The research results can provide reference for the further research on the frost heaving law of the high-speed railway subgrade and the solution of frost heaving damage.

Citation Download Citation

Xianxi Tang, Hailong Gan, and Yanan Chen "Research on deformation characteristics of frost heaving and thaw collapse of the high-speed railway subgrade in seasonal frozen areas", Proc. SPIE 12050, International Conference on Smart Transportation and City Engineering 2021, 120504H (10 November 2021); https://doi.org/10.1117/12.2614517

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