Propagation characteristics of thermo-elastic waves in saturated frozen soil

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2025-06-13 DOI:10.1016/j.compgeo.2025.107410

Jingru Xu , Liang Li , Hongyun Jiao , Xiuli Du , Lingyue Xu

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引用次数: 0

Abstract

In the current study, a dynamic porous thermo-elastic model for saturated frozen soil was proposed. The kinematic equations, constitutive equations, mass balance equations, and generalized heat conduction equations were derived to realize the thermal-hydro-mechanical coupling of the model. The dispersion equation of thermo-elastic waves in porous media with the consideration of pore-ice was derived. The phase velocity and attenuation coefficient of thermo-elastic waves in saturated frozen soil were predicted by the proposed model. Good effectiveness and accuracy have been validated by comparing the numerical results of the proposed model and results of the Leclaire-Carcione model in literatures. Finally, a study was conducted to investigate the influence of thermal effects on the wave propagation of bulk waves (P1, P2, P3, S1 and S2 waves) and thermal waves (T waves) in saturated frozen soil was analyzed. It is indicated that the impact of thermal effects on the propagation characteristics of bulk and thermal waves varies significantly across different media. For porous media containing pore-ice, the phase velocity of the P-wave may be overestimated while neglecting thermal effects.

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热弹性波在饱和冻土中的传播特性

本文提出了饱和冻土的动态多孔热弹性模型。推导了模型的运动学方程、本构方程、质量平衡方程和广义热传导方程，实现了模型的热-水-力耦合。推导了考虑孔冰的多孔介质中热弹性波的色散方程。利用该模型对饱和冻土中热弹性波的相速度和衰减系数进行了预测。通过与文献中lecaire - carcione模型的数值结果对比，验证了该模型的有效性和准确性。最后，研究了热效应对饱和冻土中体波（P1、P2、P3、S1和S2波）传播的影响，并分析了热波（T波）在饱和冻土中的传播。结果表明，在不同介质中，热效应对体波和热波传播特性的影响存在显著差异。对于含孔冰的多孔介质，在忽略热效应的情况下，可能会高估纵波相速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.