Thermo‐Hydro‐Mechanical Coupling Response in Multilayered Transversely Isotropic Fractional Viscoelastic Saturated Media

IF 3.6 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-09-23 DOI:10.1002/nag.70084

Zhi Yong Ai, Wei Yong Feng, Yi Yuan Zhang

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引用次数: 0

Abstract

Many engineering projects in soft soil areas that involve temperature changes need to consider the consolidation and creep behavior of soils. Therefore, studying the consolidation and creep behavior of saturated media under thermo‐mechanical coupling loads is of great significance for the development of energy geotechnical engineering. This study established the governing equations for multilayered transversely isotropic (TI) thermo‐viscoelastic saturated media based on the fractional Merchant model and obtained the solution to the governing equations using the Laplace–Hankel integral transform and an extended, precise integration method. Through numerical examples, the correctness of the theory and program in this paper is verified, and it is found that the transverse isotropy of the media has a significant impact on the time‐varying curves of displacement and pore pressure. Besides, as the fractional order increases, the consolidation and creep processes will be completed faster. Furthermore, when calculating the thermo‐hydro‐mechanical (THM) response of the overlying layer, ignoring the differences between the underlying layer and the overlying layer will have an undeniable impact on the calculation of the THM response of the overlying layer.

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多层横向各向同性分数黏弹性饱和介质的热-水-力耦合响应

在软土地区，许多涉及温度变化的工程需要考虑土体的固结和蠕变特性。因此，研究饱和介质在热-力耦合载荷作用下的固结和蠕变行为，对能源岩土工程的发展具有重要意义。本文基于分数阶Merchant模型建立了多层横各向同性热粘弹性饱和介质的控制方程，并利用Laplace-Hankel积分变换和一种扩展的精确积分方法得到了控制方程的解。通过数值算例验证了本文理论和程序的正确性，并发现介质的横向各向同性对位移和孔隙压力的时变曲线有显著影响。随着分数阶的增加，固结和蠕变过程完成得更快。此外，在计算上覆层的热-水-机械（THM）响应时，忽略下覆层与上覆层之间的差异将对上覆层THM响应的计算产生不可否认的影响。

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

International Journal for Numerical and Analytical Methods in Geomechanics 工程技术-材料科学：综合

CiteScore

6.40

自引率

12.50%

发文量

160

审稿时长

9 months

期刊介绍： The journal welcomes manuscripts that substantially contribute to the understanding of the complex mechanical behaviour of geomaterials (soils, rocks, concrete, ice, snow, and powders), through innovative experimental techniques, and/or through the development of novel numerical or hybrid experimental/numerical modelling concepts in geomechanics. Topics of interest include instabilities and localization, interface and surface phenomena, fracture and failure, multi-physics and other time-dependent phenomena, micromechanics and multi-scale methods, and inverse analysis and stochastic methods. Papers related to energy and environmental issues are particularly welcome. The illustration of the proposed methods and techniques to engineering problems is encouraged. However, manuscripts dealing with applications of existing methods, or proposing incremental improvements to existing methods – in particular marginal extensions of existing analytical solutions or numerical methods – will not be considered for review.