Boom 黏土热-力耦合弹塑性损伤模型研究

Research output: Contribution to journalArticle

Authors

  • Xiang Ling Li
  • Zhe Gong
  • Wei-zhong Chen
  • Hongdan Yu
  • Yong-Shang Ma
  • Hong-ming Tian

Institutes & Expert groups

  • WUT - Wuhan University of Technology - Municipal Engineering Design and Research Institute
  • Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

Documents & links

Abstract

Study of the coupled thermo-mechanical constitutive model of clays is an important issue in several specific fields, especially in the analysis of nuclear waste isolation. Based on the results of undrained triaxial tests on Boom clay at different temperatures, a coupled thermo-mechanical elastoplastic damage model is established. The yield surface is based on that of the Drucker-Prager cap model. A hardening law and a thermal/mechanical damage evolution equation are presented. The developed model is implemented into ABAQUS finite element code through subroutine USDFLD. Model parameters of Boom clay are then calibrated from experimental results by back analysis. Three dimensional coupled THM modeling of ATLAS III in-situ heating tests in HADES at the HADES underground research facility is performed by the proposed constitutive model. The numerical results are in agreement with in situ measurements, demonstrating that the model can reasonably depict the main features of thermo-mechanical behaviors of Boom clay.

Details

Original languageChinese
Pages (from-to)2433-2442
Number of pages10
JournalRock and Soil Mechanics
DOIs
Publication statusPublished - 1 Sep 2016

Keywords

  • Boom Clay, Thermo-mechanic coupling, Drucker-Prager cap model, Damage, Constitutive model, ATLAS III heating test

ID: 5647658