Numerical modelling of soft soil installed by PVDs

X. J. Yu, Z. Fang, Jianhua Yin, S. Y. Wang, Y. Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

One small-scale physical model test on the PVD (Prefabricated Vertical Drain) treated Hong Kong marine clay was simulated using finite element method (FEM) in this study. A User MATerial (UMAT) subroutine describing an Elastic Visco-Plastic (EVP) constitutive model was developed and incorporated into one commercial finite element code ABAQUS. A degressive permeability of the PVD strip was included to consider variations of its permeability during the consolidation process. The UMAT and the adopted reducing technique were demonstrated to be effective by good agreement between the observed consolidation settlement and excess pore water pressures and the simulated ones.
Original languageEnglish
Pages (from-to)1249-1254
Number of pages6
JournalKey Engineering Materials
Volume340-341 II
Publication statusPublished - 16 Apr 2007

Keywords

  • Consolidation
  • Elastro-viscoplastic
  • Finite element
  • Marine clay
  • UMAT

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this