DOI: 10.1007/s11069-020-04126-1
论文题名: Development of three-dimensional failure mechanisms and genetic algorithm for limit analysis of two-layer slopes
作者: Zheng L. ; Li L. ; Li J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 3 起始页码: 3181
结束页码: 3212
语种: 英语
中文关键词: 3D failure mechanism
; Genetic algorithm
; Highly computational efficiency
; Two-layer slope
英文关键词: efficiency measurement
; failure mechanism
; genetic algorithm
; limit analysis
; parameter estimation
; soil mechanics
; three-dimensional modeling
英文摘要: This paper develops general three-dimensional kinematically rotational failure mechanisms for two-layer soil slopes, which not only considers the back slope angle but also involves the face-failure, toe-failure and base-failure mechanisms. Although the failure mechanisms are developed for two-layer soil slopes, it is easy to extend for multilayer soil slopes with the framework proposed in this study. Genetic algorithm (GA), which poses the advantages of highly computational efficiency over the traditional loop searching method, is developed to search for the upper bound of the critical height of slope. The proposed mechanisms could perfectly reduce to the failure mechanism of single-layer slopes, and the results generated from the GA algorithm are more critical than those of other available approaches, which indirectly identifies the validity of the current analysis and shows the advantage of the GA algorithm. Parametric studies, which cover a wide range of soil slope angle, back slope angle, relative layer thickness and soil strength as well as the width of restriction, are performed to investigate the transformation of the failure mechanism and the corresponding the critical height of two-layer slopes. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168853
Appears in Collections: 气候变化与战略
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作者单位: Department of Geotechnical Engineering, Tongji University, Shanghai, 200092, China
Recommended Citation:
Zheng L.,Li L.,Li J.. Development of three-dimensional failure mechanisms and genetic algorithm for limit analysis of two-layer slopes[J]. Natural Hazards,2020-01-01,103(3)