Decoupling Analysis Method for Rain-Induced Failure of Shallow Expansive Soil Slopes Considering Swelling and Strength Softening
文献类型：期刊论文
| 作者 | Dai, Zhangjun5; Huang, Kang2,4,5; Li, Jian5; Chi, Zecheng1,3,5; Chen, Shanxiong5 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 24期号:2页码:15 |
| 关键词 | Decoupling analysis Expansive soil Shallow slope Seepage Swelling Strength softening |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-8837 |
| 英文摘要 | Rain-induced shallow failures in expansive soils often occur on gentle slopes with slope ratios of 1:2-1:6, resulting in highly complex stability issuesThis study established an equivalent theoretical model for the swelling behavior of expansive soils based on the similarity theory of temperature and humidity fields. A numerical simulation approach was developed using a model with consistent nodes and the conversion of seepage results and swelling loads, allowing for the decoupling analysis of slope seepage-deformation-stress considering swelling and strength softening. Numerical analyses were conducted on a specific slope profile in a case study, analyzing the distribution and evolution of the slope seepage, deformation, and shear stress. The findings revealed that changes in moisture content at the slope toe have the most significant impact, with infiltration depth and strength attenuation being the largest. Horizontal and vertical deformations were also highly influenced by the reduction of shear strength. The uneven water absorption and swelling of expansive soil slopes resulted in shear stress concentration areas on the slope, leading to local failures near the slope toe and eventual overall instability of the slope. This study provides valuable insights into the complex behavior of shallow failures in expansive soil slopes. |
| 资助项目 | National Natural Science Foundation of China[42172308] ; Youth Innovation Promotion Association CAS[2022331] ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd.[J2022G002] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001126272700020 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40173]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chi, Zecheng |
| 作者单位 | 1.China Univ Geosci, Chinese Acad Sci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 4.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Zhangjun,Huang, Kang,Li, Jian,et al. Decoupling Analysis Method for Rain-Induced Failure of Shallow Expansive Soil Slopes Considering Swelling and Strength Softening[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2024,24(2):15. |
| APA | Dai, Zhangjun,Huang, Kang,Li, Jian,Chi, Zecheng,&Chen, Shanxiong.(2024).Decoupling Analysis Method for Rain-Induced Failure of Shallow Expansive Soil Slopes Considering Swelling and Strength Softening.INTERNATIONAL JOURNAL OF GEOMECHANICS,24(2),15. |
| MLA | Dai, Zhangjun,et al."Decoupling Analysis Method for Rain-Induced Failure of Shallow Expansive Soil Slopes Considering Swelling and Strength Softening".INTERNATIONAL JOURNAL OF GEOMECHANICS 24.2(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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