Reference : A thermo-hydro-mechanical constitutive model and its numerical modelling for unsatura...
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/429
A thermo-hydro-mechanical constitutive model and its numerical modelling for unsaturated soils
English
Wu, Wenhua [Dalian University of Technology > The State key Laboratory for Structural Analysis of Industrial Equipment > > >]
Li, Xikui [Dalian University of Technology > The State key Laboratory for Structural Analysis of Industrial Equipment > > >]
Charlier, Robert mailto [Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et Géologie de l'Ingénieur > >]
Collin, Frédéric mailto [Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur]
2004
Computers and Geotechnics
Elsevier Sci Ltd
31
2
Yes (verified by ORBi)
International
0266-352X
Oxford
[en] thermo-hydro-mechanical behaviour ; constitutive model ; numerical modelling ; unsaturated soils
[en] A thermo-hydro-mechanical (THM) constitutive model for unsaturated soils is proposed in this paper based on the existing models. The influences of temperature on the hydro-mechanical behaviour in unsaturated soils are described in the model. Particularly, the thermal softening phenomenon, i.e. decreases in value of the pre-consolidation pressure and in critical value of the suction of the SI (suction increasing) curve with heating process, is quantitatively modelled by using the experimental data and previous work [J. Geotech. Eng. ASCE 116 (12) (1990) 1765; J. Geotech. Eng. ASCE 116 (12) (1990) 1778; Can. Geotech. J. 25 (1988) 807; Int. J. Numer. Anal. Meth. Geomech. 22 (1998) 549; Can. Geotech. J. 37 (2000) 607; Characterisation and thermo-hydro-mechanical behaviour of unsaturated Boom clay: an experimental study. Thesis Doctoral 1999, Technical University of Catalonia (UPC), Barcelona, Spain]. Numerical modelling of the proposed THM model has also been implemented within the finite element code LAGACOM. Finally, the comparisons of the results obtained from the numerical modelling of the constitutive behaviour with existing experimental results show that the present model can simulate the thermo-hydro-mechanical behaviour in unsaturated soils with satisfaction. Some other numerical results given in the paper also validate the versatility and applicability of the present constitutive model. (C) 2004 Elsevier Ltd. All rights reserved.
Researchers ; Professionals
http://hdl.handle.net/2268/429
10.1016/j.compgeo.2004.02.004

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