岩土工程学报2026，Vol.48Issue(4)：760-770,11.DOI:10.11779/CJGE20250079
温度效应下考虑非达西渗流的大应变软土地基非线性固结分析
Nonlinear consolidation analysis of soft soil foundations considering large strain and non-darcian flow under temperature effects
摘要
Abstract
The theory of thermal consolidation is widely applied in engineering projects such as ground source heat pumps,energy piles,and heating pipelines,which involve thermo-hydro-mechanical coupling in geomaterials.The physical and mechanical properties of soils are significantly affected by temperature changes.It has been shown that elevated temperatures result in increased soil settlements,and traditional small-strain consolidation theories can lead to substantial errors in calculations.Moreover,soil permeability is altered by temperature variations,but most existing analyses are based on Darcy flow law,with the impact of non-Darcian flow on the thermal consolidation process often being neglected.In this study,the Hansbo's flow model is utilized to account for the effects of temperature rise on the physical and mechanical properties of large-strain saturated soils.Governing equations for nonlinear consolidation and heat conduction are derived,and numerical solutions for excess pore water pressure and consolidation degree are presented.The validity and applicability of the theoretical model are verified under specific conditions.The impacts of large strain and non-Darcian flow on thermal consolidation are thoroughly investigated.It is demonstrated that temperature loading and non-Darcian flow both reduce the discrepancies in consolidation degrees between large-and small-strain models.The significant excess pore water pressure accumulation caused by non-Darcian effects is shown to be effectively mitigated under heating conditions.Additionally,the effect of temperature on promoting settlement is found to remain nearly constant under varying preconsolidation pressures.During multi-stage loadings,the peak excess pore water pressure in the upper soil layer is consistently maintained at a low level,with heating further reducing it.关键词
软土固结/大应变/温度效应/非达西渗流/热传导Key words
soft soil consolidation/large strain/temperature effects/non-Darcian flow/heat conduction分类
建筑与水利引用本文复制引用
韩涛,李阔,卢萌盟..温度效应下考虑非达西渗流的大应变软土地基非线性固结分析[J].岩土工程学报,2026,48(4):760-770,11.基金项目
国家重点研发计划项目(2024YFF0508202) （2024YFF0508202）
国家自然科学基金面上项目(52578448,52178373) （52578448,52178373）
江苏省研究生科研创新计划项目(KYCX25_3086) （KYCX25_3086）
中国矿业大学研究生创新计划项目(2025WLKXJ230)This work was supported by National Key Research and Development Program of China(Grant No.2024YFF0508202),National Natural Science Foundation of China(Grant Nos.52578448,52178373),The Jiangsu Provincial Graduate Research and Practice Innovation Program(Grant No.KYCX25_3086),Graduate Innovation Program of China University of Mining and Technology(Grant No.2025WLKXJ230). （2025WLKXJ230）
