Insight into nonlinear thermal consolidation of saturated clay under coupled thermo-mechanical loading: a unified one-dimensional model
文献类型：期刊论文
| 作者 | Lu, Mengmeng1; Sun, Jinxin2; Wen, Minjie3; Yang, Kang4; Li, Kuo4 |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2024-08-18 |
| 页码 | 27 |
| 关键词 | Heat transfer Nonlinear consolidation Saturated clay Temperature effect Thermo-hydro-mechanical coupling effect Thermo-osmosis |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-024-02382-0 |
| 英文摘要 | The evaluation of thermo-hydro-mechanical (THM) coupling response of clayey soils has emerged as an imperative research focus within thermal-related geotechnical engineering. Clays will exhibit nonlinear physical and mechanical behavior when subjected to variations in effective stress and temperature. Additionally, temperature gradient within soils can induce additional pore water migration, thereby resulting in a significant thermo-osmosis effect. Indeed, thermal consolidation of clayey soils constitutes a complicated THM coupling issue, whereas the theoretical investigation into it currently remains insufficiently developed. In this context, a one-dimensional mathematical model for the nonlinear thermal consolidation of saturated clay is proposed, which comprehensively incorporates the crucial THM coupling characteristics under the combined effects of heating and mechanical loading. In current model, the interaction between nonlinear consolidation and heat transfer process is captured. Heat transfer within saturated clay is investigated by accounting for the conduction, advection, and thermomechanical dispersion. The resulting governing equations and numerical solutions are derived through assuming impeded drainage boundaries. Then, the reasonability of current model is validated by degradation and simulation analysis. Subsequently, an in-depth assessment is carried out to investigate the influence of crucial parameters on the nonlinear consolidation behavior. The results indicate that increasing the temperature can significantly promote the consolidation process of saturated clay, the dissipation rate of excess pore water pressure (EPWP) is accelerated by a maximum of approximately 15%. Moreover, the dissipation rate of EPWP also increases with the increment of pre-consolidation pressure, while the corresponding settlement decreases. Finally, the consolidation performance is remarkably impacted by thermo-osmosis and neglecting this process will generate a substantial departure from engineering practice. |
| 资助项目 | National Natural Science Foundation of China[52178373] ; National Natural Science Foundation of China[51878657] ; National Natural Science Foundation of China |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001292750700001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42262]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Sun, Jinxin |
| 作者单位 | 1.China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Zhejiang Sci Tech Univ, Sch Civil Engn & Architecture, Hangzhou 310014, Peoples R China 4.China Univ Min & Technol, State Key Lab Intelligent Construct & Hlth Operat, Xuzhou 221006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Mengmeng,Sun, Jinxin,Wen, Minjie,et al. Insight into nonlinear thermal consolidation of saturated clay under coupled thermo-mechanical loading: a unified one-dimensional model[J]. ACTA GEOTECHNICA,2024:27. |
| APA | Lu, Mengmeng,Sun, Jinxin,Wen, Minjie,Yang, Kang,&Li, Kuo.(2024).Insight into nonlinear thermal consolidation of saturated clay under coupled thermo-mechanical loading: a unified one-dimensional model.ACTA GEOTECHNICA,27. |
| MLA | Lu, Mengmeng,et al."Insight into nonlinear thermal consolidation of saturated clay under coupled thermo-mechanical loading: a unified one-dimensional model".ACTA GEOTECHNICA (2024):27. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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