DOI: 10.1007/s11069-020-04391-0
论文题名: Effects of seismic force and pore water pressure on stability of 3D unsaturated hillslopes
作者: Wang L. ; Liu W. ; Hu W. ; Li W. ; Sun D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 2 起始页码: 2093
结束页码: 2116
语种: 英语
中文关键词: Hillslope
; Limit analysis
; Pore water pressure
; Seismic force
; Unsaturated soil
英文关键词: hillslope
; limit analysis
; pore pressure
; porewater
; seismicity
; slope stability
; stability analysis
; unsaturated medium
英文摘要: Three-dimensional (3D) kinematic limit analysis of unsaturated hillslopes is presented in this paper. Different from the traditional two-dimensional (2D) mechanism based on the infinite slope model, the 3D failure mechanism is more rational for its advantage in taking the out-of-plane geometries and soil properties into consideration. The soils in engineering practice are mostly unsaturated in nature and are commonly characterized with an arbitrary distribution of the moisture content, i.e., the matric suction, and therefore the formation of the work balance equation becomes much more elaborated using traditional methods. To tackle the nonlinear features of matric suction, a semi-analytical method is presented and is validated through comparisons with the benchmark solutions. The hillslope stability under seismic and pore water pressure conditions are both numerically studied. The results are presented in forms of graphs for a practical range of parameters, indicating the significance in accounting for the influences of 3D constraints, seismic loads and pore water pressures in hillslope stability assessments. © 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/169444
Appears in Collections: 气候变化与战略
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作者单位: School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; State Key Laboratory of Geohazard Prevention and Geoenvironmental Protection, Chengdu University of Technology, 1 Erxianqiao Dongsan Road, Chengdu, 610059, China; Department of Civil Engineering, Shanghai University, Shanghai, 200444, China
Recommended Citation:
Wang L.,Liu W.,Hu W.,et al. Effects of seismic force and pore water pressure on stability of 3D unsaturated hillslopes[J]. Natural Hazards,2021-01-01,105(2)