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作者:

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

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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.

关键词:

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

作者机构:

  • [ 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

通讯作者信息:

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

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来源 :

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

ISSN: 0955-7997

年份: 2020

卷: 121

页码: 76-90

3 . 3 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:115

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 7

ESI高被引论文在榜: 0 展开所有

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