Thermal Effect in Nonlinear One-Dimensional Consolidation of Cold Region Soil

Zongqin Wang, Wenbing Wu, Peng Zhang, Zuodong Wang, Ruichen Xi and Minjie Wen
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Zongqin Wang: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Wenbing Wu: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Peng Zhang: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Zuodong Wang: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Ruichen Xi: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Minjie Wen: School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China

Energies, 2022, vol. 15, issue 15, 1-14

Abstract: The thermal effect can significantly influence the consolidation of the soil, especially in the cold region. Previous studies have established to research that the drops in the ambient temperature would slow down the consolidation process, resulting in the slow dissipation of excess pore water pressure. In addition, the previous studies neglect the final settlement because consolidation is also influenced by thermal effect. In this paper, a closed-form solution to the one-dimensional nonlinear consolidation of soil considering the thermal effect is proposed. In the mathematical framework, the influences of the thermal effect on the compression index, the permeability, and the elastic modulus of the soil are considered. The solution is fully verified by comparing it with the FDM solution neglecting the thermal effect and the classic Terzaghi’s solution. An analysis has been carried out to assess the influence of temperature, stress ratios, consolidation time, the ratio of compression index to permeability index, and the interface parameters on the consolidation process. Different from many previous studies overlooking the thermal effect on the modulus of the soil, a model has been developed which points out that the final settlement due to consolidation would vary significantly with the ambient temperature. Therefore, the thermal effect must be considered in the consolidation calculation of the freeze–thaw cycle soil in the cold region.

Keywords: one-dimensional nonlinear consolidation; thermal effect; closed-form solution; cold region soil; continuous drainage boundary (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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