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The unsaturated soil coupling model proposed in this paper involves many thermodynamic concepts and variables, some of which may be uncommon in soil mechanics and cannot be directly measured by soil tests. From the perspective of practical engineering applications, this may lead to problems that are difficult to understand and accept. However, from the perspective of basic scientific research, these quantities objectively exist and are not just empty names and symbols. The parameters involved in the model are as follows: parameters related to the elastic-potential-energy density function, including B0, c, βT, ζ, λ(s); migration coefficients related to particle motion, including ηv, ηs, λvg, λsg, b, γ; and parameters related to the SWCC, a1, b1, b2, n. The specific calibration methods for each parameter are as follows:

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Analysis of Thermo-Hydro-Mechanical Coupling Characteristics of Unsaturated Soil and Model Validation

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  • 发表日期：

    2026年

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  • Guangchang Yang

摘要

The unsaturated soil coupling model proposed in this paper involves many thermodynamic concepts and variables, some of which may be uncommon in soil mechanics and cannot be directly measured by soil tests. From the perspective of practical engineering applications, this may lead to problems that are difficult to understand and accept. However, from the perspective of basic scientific research, these quantities objectively exist and are not just empty names and symbols. The parameters involved in the model are as follows: parameters related to the elastic-potential-energy density function, including B0, c, βT, ζ, λ(s); migration coefficients related to particle motion, including ηv, ηs, λvg, λsg, b, γ; and parameters related to the SWCC, a1, b1, b2, n. The specific calibration methods for each parameter are as follows: