Reliability assessment of rainfall-induced slope stability using Chebyshev-Galerkin-KL expansion and Bayesian approach
文献类型：期刊论文
| 作者 | Gu, Xin2; Wang, Lin1; Ou, Qiang2; Zhang, Wengang2; Sun, Guanhua3 |
| 刊名 | CANADIAN GEOTECHNICAL JOURNAL
 |
| 出版日期 | 2023-09-29 |
| 页码 | 14 |
| 关键词 | Chebyshev-Galerkin-KL expansion spatial variability rainfall-induced slope stability Bayesian updating SWCC model selection |
| ISSN号 | 0008-3674 |
| DOI | 10.1139/cgj-2022-0671 |
| 英文摘要 | Soil spatial variability has essential influence on the reliability of geotechnical structures. Karhunen-Loeve (KL) series expansion is an effective approach to characterize such features of soil properties. Acquiring solution for Fredholm integral equation of the second type is a necessary prerequisite; however, the corresponding analytical expressions are only available for limited circumstances. To overcome this challenge, a newly proposed method called Chebyshev-Galerkin-KL expansion was developed to discretize the random fields of soil parameters, from which the approximated eigenvalues and eigenfunctions can be obtained using the Chebyshev orthogonal polynomials of the second kind combined with Galerkin technique. Application of the proposed approach is illustrated through reliability analysis of an unsaturated slope example under different rainfall patterns, where the uncertainty in selection of a "best" soil-water characteristic curve (SWCC) model and statistical uncertainties in SWCC model parameters are taken into account. Results show that the developed approach is feasible to generate random fields with sufficient accuracy. Under a constant rainfall duration, the Advanced pattern may lead to shallow landslide with the highest probability, followed by Intermediate and Delayed. It should be noted that Bayesian inference and determination of optimal SWCC model should be carried out prior to reliability analysis. Otherwise, the landslide risk level would be exaggerated. |
| 资助项目 | National Natural Science Foundation of China[52008058] ; National Natural Science Foundation of China[52108299] ; Graduate Research and Innovation Foundation of Chongqing, China[CYS22054] ; Science and Technology Research Program of Chongqing Municipal Education Commission[HZ2021001] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001083458100001 |
| 出版者 | CANADIAN SCIENCE PUBLISHING |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39672]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Wengang |
| 作者单位 | 1.Beijing Normal Univ, Sch Natl Safety & Emergency Management, Beijing 100875, Peoples R China 2.Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Xin,Wang, Lin,Ou, Qiang,et al. Reliability assessment of rainfall-induced slope stability using Chebyshev-Galerkin-KL expansion and Bayesian approach[J]. CANADIAN GEOTECHNICAL JOURNAL,2023:14. |
| APA | Gu, Xin,Wang, Lin,Ou, Qiang,Zhang, Wengang,&Sun, Guanhua.(2023).Reliability assessment of rainfall-induced slope stability using Chebyshev-Galerkin-KL expansion and Bayesian approach.CANADIAN GEOTECHNICAL JOURNAL,14. |
| MLA | Gu, Xin,et al."Reliability assessment of rainfall-induced slope stability using Chebyshev-Galerkin-KL expansion and Bayesian approach".CANADIAN GEOTECHNICAL JOURNAL (2023):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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