砂土初始孔隙比空间变异性对其力学特性及破坏模式的影响分析

Translated title of the contribution: Influence of spatial variability of initial void ratio on the mechanical response and failure mode of sand

Jie Yang, Jia Ying Chen, Zhen Yu Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Most of the existing studies use simple More-Coulomb model to analyse the influence of spatial variability of soil on the factor of safety or the failure probability of the slope/foundation. In fact, the critical state constitutive model, such as SIMSAND model, can more accurately describe the stress-strain relationship of soil. For this reason, this paper adopts the SIMSAND model to make a detailed analysis of the influence of the spatial variability of the initial void ratio.A simple plane strain biaxial test was simulated as a calculation example with four cases:(i) drained condition and loose sand, (ii) drained condition and dense sand, (iii) undrained condition and loose sand, and (iv) undrained condition and dense sand. In each case, the Monte Carlo method is used to generate the random filed of the initial void ratio, and a large number of calculations are performed to analyse the influence of the inhomogeneity of the initial void ratio on the development of the shear band, the vertical bearing capacity and the probability density distribution of the vertical bearing capacity.

Translated title of the contributionInfluence of spatial variability of initial void ratio on the mechanical response and failure mode of sand
Original languageChinese (Simplified)
Pages (from-to)754-762
Number of pages9
JournalJisuan Lixue Xuebao/Chinese Journal of Computational Mechanics
Volume38
Issue number6
DOIs
Publication statusPublished - 28 Dec 2021

Keywords

  • Critical-state model
  • Random field
  • Sand
  • Shear band
  • Spatial variability

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Applied Mathematics

Cite this