Rainfall-induced slope collapse with coupled material point method

doi:10.1016/j.enggeo.2018.02.007

CORC > 武汉植物园 > 中国科学院武汉植物园

	Rainfall-induced slope collapse with coupled material point method
	Vardon, P. J.2; Wang, B.1,2; Hicks, M. A.2
刊名	ENGINEERING GEOLOGY
	2018-05-18
卷号	239 页码:1-12
关键词	Large deformations Material point method Rainfall-induced failure Slope stability Unsaturated soils
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2018.02.007
英文摘要	Rainfall-induced slope failures are a major category of slope failure, with incidents likely to increase with the predicted escalation of extreme rainfall events. Traditional numerical methods such as the finite element method are often restricted in their applicability to small deformation analyses. Therefore, incomplete descriptions of the failure mechanism and failure consequence may be obtained, due to the evolving deformations and progressive failure being ignored. A one-point, two-phase material point method (MPM) formulation is proposed to consider the influence of rainfall on slope failure. Due to the characteristics of MPM in capturing the large deformations, the complete failure process, from initiation to failure, of a slope subjected to rainfall infiltration is presented. The soil behaviour is described by a Mohr-Coulomb strain-softening model based on Bishop's effective stress. The two-phase analysis shows that the rainfall-affected slope is initially stable, until the soil shear strength reduces due to the reduction of suction in the slope starting from the surface, leading to a superficial failure mode, which in turn leads to a complete slope failure. Friction angle and residual cohesion are shown to play important roles in the development of the slope failure.
资助项目	Funds for Creative Research Groups of China[51621006] ; China Scholarship Council ; Geo-Engineering Section of Delft University of Technology, the Netherlands ; 100 Talents Program of the Chinese Academy of Sciences
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000432769300001
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/5265]
专题	中国科学院武汉植物园
通讯作者	Hicks, M. A.
作者单位	1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan, Hubei, Peoples R China 2.Delft Univ Technol, Fac Civil Engn & Geosci, Geoengn Sect, Delft, Netherlands
推荐引用方式 GB/T 7714	Vardon, P. J.,Wang, B.,Hicks, M. A.. Rainfall-induced slope collapse with coupled material point method[J]. ENGINEERING GEOLOGY,2018,239:1-12.
APA	Vardon, P. J.,Wang, B.,&Hicks, M. A..(2018).Rainfall-induced slope collapse with coupled material point method.ENGINEERING GEOLOGY,239,1-12.
MLA	Vardon, P. J.,et al."Rainfall-induced slope collapse with coupled material point method".ENGINEERING GEOLOGY 239(2018):1-12.