Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect

doi:10.1002/nag.2879

CORC > 武汉植物园 > 中国科学院武汉植物园

	Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect
	Li, Xiaochun; Bai, Bing; Wang, Haibin; Shi, Lu
刊名	INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
	2019-02-10
卷号	43 期号:2 页码:578-598
关键词	Barton criterion extended finite element method factor of safety generalized Hoek-Brown criterion limit equilibrium method slope stability
ISSN号	0363-9061
DOI	10.1002/nag.2879
英文摘要	The shear strength envelope of most geotechnical materials is nonlinear. In this study, the finite element-based limit equilibrium method (FELE) is improved to assess the stability of a prescribed slip surface that obeys a nonlinear failure criterion. Two nonlinear failure criteria, namely, the Barton criterion and the generalized Hoek-Brown (GHB) criterion, are implemented. A power curve model that can perfectly fit the envelope of the GHB criterion is proposed to explicitly express the shear strength from the normal stress. The algorithm of the improved FELE, which includes a nonlinear criterion, is explained in detail, and the fast convergence of the method is checked by evaluating examples. The numerical examples show that, for a smooth slip surface, FELE can calculate a greater factor of safety (FOS) than that calculated using the Morgenstern-Price (MP) method when the strength criterion of slip surface is nonlinear. In addition, FELE can determine the bell-shaped distribution of the increase in normal stress caused by anchoring measures, which cannot be considered in the MP method.
资助项目	National Natural Science Foundation of China[41672252] ; National Natural Science Foundation of China[51674238]
WOS研究方向	Engineering ; Materials Science ; Mechanics
语种	英语
出版者	WILEY
WOS记录号	WOS:000455051100008
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/6436]
专题	中国科学院武汉植物园
通讯作者	Shi, Lu
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaochun,Bai, Bing,Wang, Haibin,et al. Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2019,43(2):578-598.
APA	Li, Xiaochun,Bai, Bing,Wang, Haibin,&Shi, Lu.(2019).Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,43(2),578-598.
MLA	Li, Xiaochun,et al."Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 43.2(2019):578-598.