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Author:

Lin, Shan (Lin, Shan.) | Zheng, Hong (Zheng, Hong.) (Scholars:郑宏) | Jiang, Wei (Jiang, Wei.) | Li, Wei (Li, Wei.) | Sun, Guanhua (Sun, Guanhua.)

Indexed by:

EI Scopus SCIE

Abstract:

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.

Keyword:

Stony soil slope Virtual element method Slope Excavation Finite element method Shear strength reduction

Author Community:

  • [ 1 ] [Lin, Shan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zheng, Hong]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Jiang, Wei]China Three Gorges Univ, Coll Civil Engn & Architecture, Yichang 443002, Peoples R China
  • [ 4 ] [Li, Wei]Linyi Univ, Sch Civil Engn & Architecture, Linyi 276000, Shandong, Peoples R China
  • [ 5 ] [Sun, Guanhua]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
  • [ 6 ] [Sun, Guanhua]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Reprint Author's Address:

  • [Sun, Guanhua]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China

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Source :

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

ISSN: 0955-7997

Year: 2020

Volume: 121

Page: 76-90

3 . 3 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:115

Cited Count:

WoS CC Cited Count: 8

SCOPUS Cited Count: 8

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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