Numerical simulation of earthquake-induced liquefactions considering the principal stress rotation

Zhe Wang, Zhe WANG, Yunming Yang, Hai Sui Yu, Yunming Yang, Kanthasamy K. Muraleetharan

Research output: Journal PublicationArticlepeer-review

10 Citations (Scopus)

Abstract

Dynamic loadings such as earthquake loadings can generate considerable principal stress rotation (PSR) in the saturated soil. The PSR without changes of principal stress magnitudes can generate additional excess pore water pressures and plastic strains, thus accelerating liquefaction in undrained conditions. This paper simulates a centrifuge model test using the fully coupled finite element method considering the PSR. The impact of PSR under the earthquake loading is taken into account by using an elastoplastic soil model developed on the basis of a kinematic hardening soil model with the bounding surface concept. The soil model considers the PSR by treating the stress rate generating the PSR independently. The capability of this soil model is verified by comparing the numerical predictions and experimental results. It also indicates that the PSR impact can not be ignored in predictions of soil liquefaction.

Original languageEnglish
Pages (from-to)432-441
Number of pages10
JournalSoil Dynamics and Earthquake Engineering
Volume90
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

Keywords

  • Earthquake loading
  • Elastoplastic model
  • Liquefaction
  • Non-coaxiality
  • Principal stress rotation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

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