Journal
COMPUTERS AND GEOTECHNICS
Volume 30, Issue 8, Pages 649-660Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2003.09.001
Keywords
thermo-plasticity; clay; constitutive modelling; experimental results; preconsolidation pressure; thermal strain
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Numerical modelling of the thermo-mechanical behaviour of soils is an important issue in the analysis of problems such as nuclear waste isolation or geothermal structures. The purpose of this paper is to present a new thermo-plastic mechanism for isotropic thermo-mechanical paths including thermal hardening. It is based on considerations of the thermal effect on void ratio. After a discussion of the experimental evidence, the formulation of the thermo-plastic yield mechanism is introduced. Typical features are analysed and the responses of the model discussed. The proposed model is validated on the basis of experimental results on two different clays. (C) 2003 Elsevier Ltd. All rights reserved.
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