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

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	Improved finite element-based limit equilibrium method for slope stability analysis by considering nonlinear strength criteria and its application in assessing the anchoring effect
	Shi, Lu; Wang, Haibin; Bai, Bing; Li, Xiaochun
	2019
发表期刊	INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
ISSN	0363-9061
卷号	43 期号:2 页码:578-598
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.
关键词	Barton criterion extended finite element method factor of safety generalized Hoek-Brown criterion limit equilibrium method slope stability
DOI	10.1002/nag.2879
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Geological ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:000455051100008
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/15046
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China
第一作者单位	中科院武汉岩土力学所
推荐引用方式 GB/T 7714	Shi, Lu,Wang, Haibin,Bai, Bing,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	Shi, Lu,Wang, Haibin,Bai, Bing,&Li, Xiaochun.(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	Shi, Lu,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.

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