Investigation of the excavation of stony soil slopes using the virtual element method

doi:10.1016/j.enganabound.2020.09.005

	Investigation of the excavation of stony soil slopes using the virtual element method
	Lin, Shan 3; Zheng, Hong 3; Jiang, Wei 2; Li, Wei 4; Sun, Guanhua 1,5
刊名	ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
	2020-12-01
卷号	121 页码:76-90
关键词	Slope Virtual element method Finite element method Stony soil slope Excavation Shear strength reduction
ISSN号	0955-7997
DOI	10.1016/j.enganabound.2020.09.005
英文摘要	This study improved two parts of the virtual element method (VEM) to ensure that the stability of a stony soil slope, especially under excavation conditions, could be better studied. One of the improvements was the specific realization of the excavation algorithm, including the determination of how to identify polygonal elements that needed to be excavated, and the "deactivate and reactivate polygonal elements" used to calculate the excavation load during the slope excavation process. The second improvement was the calculation of the factor of safety (FOS) of a slope by combining shear strength reduction and the phi-nu inequality so that the stability of the stony soil slope could be better evaluated. The principal goal was to extend the latest developed virtual element method to the analysis and calculation of the excavation of a stony soil slope. Because the VEM was shape independent, it also allowed the number of nodes in an element to be chosen flexibly and fluidly, so the number of nodes could be changed easily during a simulated procedure. Two numerical examples of the one-step excavation of a homogeneous slope and the two-step excavation of a stony soil slope were solved with the improved VEM. The numerical results showed that the VEM could accurately simulate the excavation process of the slope.
资助项目	National Key R&D Program of China[2018YFE0100100] ; Natural Science Foundation of China[11972043] ; Natural Science Foundation of China[11902134] ; Open Research Fund of the State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics ; Chinese Academy of Sciences[Z019008]
WOS研究方向	Engineering ; Mathematics
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000582240200006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24926]
专题	中科院武汉岩土力学所
通讯作者	Sun, Guanhua
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.China Three Gorges Univ, Coll Civil Engn & Architecture, Yichang 443002, Peoples R China 3.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China 4.Linyi Univ, Sch Civil Engn & Architecture, Linyi 276000, Shandong, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lin, Shan,Zheng, Hong,Jiang, Wei,et al. Investigation of the excavation of stony soil slopes using the virtual element method[J]. ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,2020,121:76-90.
APA	Lin, Shan,Zheng, Hong,Jiang, Wei,Li, Wei,&Sun, Guanhua.(2020).Investigation of the excavation of stony soil slopes using the virtual element method.ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS,121,76-90.
MLA	Lin, Shan,et al."Investigation of the excavation of stony soil slopes using the virtual element method".ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS 121(2020):76-90.