Stability analysis of unsaturated slopes under rainfall and drainage using the vector-sum-based numerical manifold model
文献类型：期刊论文
| 作者 | Wu, Wenan5; Yang, Yongtao1,3; Jiao, Yuyong4; Wang, Shanyong2 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 179页码:22 |
| 关键词 | Rainfall-induced slope failure Unsaturated hydro-mechanics Safety factor Vector sum method Numerical manifold method |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106992 |
| 英文摘要 | Rain-induced slope failure is a worldwide disaster in engineering practice. This paper presents a framework for stability analysis of unsaturated slopes. A fully coupled model of wetting and non-wetting fluid phases with deformable solid phase is used to model hydro-mechanics of unsaturated slopes under water infiltration and discharge. Plasticity of the solid phase is described using the classical non-smooth Mohr-Coulomb (MC) model, which is implemented using a novel subspace-tracking scheme by updating stresses in the principal stress space that is continuously dependent on stresses. The Vector Sum Method (VSM) and Pattern Search Method (PSM) are combined to transform the slope stability analysis into an optimization problem and to determine critical slip surfaces and safety factors simultaneously. Unlike the conventional definition of safety factor, vector characteristics of the sliding and resistance forces are considered. The present framework is implemented using the Numerical Manifold Method (NMM) and is advantageous in modeling complex boundary conditions and discontinuities in geomaterials. Through benchmark slope stability analyses, effectiveness and accuracy of the proposed model are validated. Numerical simulations show that there is a lag between the time instant rainfall ceases and the time instant fluid phases reach equilibrium and the safety factor assumes its minimum. |
| 资助项目 | National Natural Science Foundation of China[41920104007] ; National Natural Science Foundation of China[12202024] ; National Natural Science Foundation of China[12072357] ; National Natural Science Foundation of China[12272393] ; National Natural Science Foundation of China[52130905] ; Thr CUG Scholar Scientific Research Funds at China University of Geosciences (Wuhan)[2023098] ; Young Top-notch Talent Cultivation Program of Hubei Province ; ARC Discovery Project[DP210100437] ; ARC Discovery Project[DP230100126] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001390348400001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37731]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Yongtao |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Newcastle, Sch Engn, Discipline Civil Surveying & Environm Engn, Callaghan, NSW 2308, Australia 3.Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Peoples R China 4.Sun Yat sen Univ, Sch Civil Engn, State Key Lab Tunnel Engn, Zhuhai 519082, Peoples R China 5.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Wenan,Yang, Yongtao,Jiao, Yuyong,et al. Stability analysis of unsaturated slopes under rainfall and drainage using the vector-sum-based numerical manifold model[J]. COMPUTERS AND GEOTECHNICS,2025,179:22. |
| APA | Wu, Wenan,Yang, Yongtao,Jiao, Yuyong,&Wang, Shanyong.(2025).Stability analysis of unsaturated slopes under rainfall and drainage using the vector-sum-based numerical manifold model.COMPUTERS AND GEOTECHNICS,179,22. |
| MLA | Wu, Wenan,et al."Stability analysis of unsaturated slopes under rainfall and drainage using the vector-sum-based numerical manifold model".COMPUTERS AND GEOTECHNICS 179(2025):22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。