Investigation on One-Dimensional Nonlinear Thermal Consolidation of Saturated Clay under the Impeded Drainage Boundary
文献类型：期刊论文
| 作者 | Jiang, Wenhao1,2,3; Li, Jiangshan1,2; Ge, Shangqi4; Feng, Chen1,2,3; Huang, Xiao1,2; Wang, Ping1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2024 |
| 卷号 | 24期号:1页码:13 |
| 关键词 | Analytical solution Finite difference solution Impeded drainage boundary Nonlinear consolidation Saturated clay Thermal conduction |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-8129 |
| 英文摘要 | Temperature changes affect the nonlinear consolidation process in soils, and there is limited associated theoretical research. In this study, the governing equations for nonlinear consolidation and thermal conduction are developed, and a mathematical model for one-dimensional nonlinear thermal consolidation in saturated clay under the impeded drainage boundary is established, where the temperature-dependent compressibility and permeability are considered. Meanwhile, the finite-difference solutions for nonlinear consolidation and the analytical solutions for thermal conduction are obtained, respectively. Furthermore, the proposed model's reasonableness is verified by comparison with other theoretical models. Based on this, the impact of several factors on nonlinear thermal consolidation behaviors is investigated. With a rise in temperature increment (Delta T), the dissipation rate of excess pore water pressure (EPWP) accelerates in the later consolidation stage, and the final settlement becomes larger. In addition, the EPWP dissipation rate grows remarkably with an increasing impeded drainage boundary parameter (mu). In particular, the impeded drainage boundary can be degraded into a drainage boundary when the value of mu becomes large (e.g., mu = 100 m-1). Increasing preconsolidation pressure (pcR) results in a reduction in settlement, and the maximum values of EPWP decline with a rising linear loading time (tc). Overall, this study contributes to the accurate prediction of the nonlinear consolidation process taking the thermal effect into account. This study might provide a basis for the analysis of soil consolidation features in geotechnical projects that involve thermal effects, which have been growing in number in recent decades. For instance, an approach that combines thermal treatment with surcharge preloading has started to be employed for soft soil reinforcement. When this method is used in practical engineering projects, the changes in EPWP and settlement can be predicted based on the model developed in this study. In addition, this study reveals that increasing the temperature by 60 degrees C can lead to an increase in the final settlement of saturated clay by approximately 25%, compared with ambient temperature treatment. Besides, compacted clay, which typically serves as a bottom engineering barrier, might be subject to consolidation deformation due to varied temperatures and external loading. The model presented could contribute to properly predicting the porosity change in compacted clay under this scenario. |
| 资助项目 | This work is financially supported by the National Key Research and Development Program of China (Grant No. 2019YFC1804003), the Funds for International Cooperation and Exchange of the National Natural Science Foundation of China (Grant No. 51861165104), a[2019YFC1804003] ; National Key Research and Development Program of China[51861165104] ; Funds for International Cooperation and Exchange of the National Natural Science Foundation of China[42107185] ; National Natural Science Foundation of China |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001113892600013 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40254]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Ping |
| 作者单位 | 1.Hubei Prov Key Lab Contaminated Sludge & Soil Sci, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Wenhao,Li, Jiangshan,Ge, Shangqi,et al. Investigation on One-Dimensional Nonlinear Thermal Consolidation of Saturated Clay under the Impeded Drainage Boundary[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2024,24(1):13. |
| APA | Jiang, Wenhao,Li, Jiangshan,Ge, Shangqi,Feng, Chen,Huang, Xiao,&Wang, Ping.(2024).Investigation on One-Dimensional Nonlinear Thermal Consolidation of Saturated Clay under the Impeded Drainage Boundary.INTERNATIONAL JOURNAL OF GEOMECHANICS,24(1),13. |
| MLA | Jiang, Wenhao,et al."Investigation on One-Dimensional Nonlinear Thermal Consolidation of Saturated Clay under the Impeded Drainage Boundary".INTERNATIONAL JOURNAL OF GEOMECHANICS 24.1(2024):13. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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