An effective stress-based approach to modeling the hydro-mechanical behavior of unsaturated soils
文献类型：期刊论文
| 作者 | Song, Zhaoyang2; Ma, Tiantian3; Cai, Guoqing4; Liu, Yan4; Wei, Changfu1,3 |
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2024-07-15 |
| 页码 | 15 |
| 关键词 | unsaturated soil effective stress intergranular stress constitutive model hardening effect |
| ISSN号 | 0008-3674 |
| DOI | 10.1139/cgj-2022-02341 |
| 英文摘要 | A constitutive model of unsaturated soils is developed by incorporating the concept of intergranular stress into the framework of the modified Cam-Clay model. Within this context, the degree of saturation is viewed as an internal state variable, so that the soil-water retention function appears naturally as an evolution equation for the volume fraction of water. The new model not only has a neat structure but also includes fewer material parameters compared to the other models. A new volumetric-hardening law is proposed by taking into account the effect of wetting-induced pore collapse. It is shown that the collapsing void ratio (the current void ratio minus the void ratio at full saturation under the same effective stress) is dominated by the degree of pore air saturation (one minus the degree of water saturation) and practically independent of intergranular pulling forces, highlighting the important effect of soil fabric on the wetting-induced pore collapse. The proposed model is applied to simulate different types of experiments on unsaturated soils subjected to various combined hydraulic and mechanical loadings, showing its capability and diversity in modeling the hydraulic and mechanical behavior of unsaturated soils. |
| 资助项目 | Natural Sci-ence Foundation of China (NSFC)[51939011] ; Natural Sci-ence Foundation of China (NSFC)[41972290] ; Department of Science and Technology of Guangxi[AD20325010] ; Open Research Fund of Key Laboratory of Geomechanics and Geomechni-cal Engineering Safety, Chinese Academy of Sciences[SKLGME023019] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001267326000001 |
| 出版者 | CANADIAN SCIENCE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41865]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wei, Changfu |
| 作者单位 | 1.Guilin Univ Technol, Coll Civil Engn & Architecture, Guilin, Peoples R China 2.Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 4.Beijing Jiaotong Univ, Sch Civil Engn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Zhaoyang,Ma, Tiantian,Cai, Guoqing,et al. An effective stress-based approach to modeling the hydro-mechanical behavior of unsaturated soils[J]. CANADIAN GEOTECHNICAL JOURNAL,2024:15. |
| APA | Song, Zhaoyang,Ma, Tiantian,Cai, Guoqing,Liu, Yan,&Wei, Changfu.(2024).An effective stress-based approach to modeling the hydro-mechanical behavior of unsaturated soils.CANADIAN GEOTECHNICAL JOURNAL,15. |
| MLA | Song, Zhaoyang,et al."An effective stress-based approach to modeling the hydro-mechanical behavior of unsaturated soils".CANADIAN GEOTECHNICAL JOURNAL (2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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