A thermo‐hydro‐mechanical model for unsaturated soils based on the effective stress concept
Identifieur interne : 000847 ( Main/Exploration ); précédent : 000846; suivant : 000848A thermo‐hydro‐mechanical model for unsaturated soils based on the effective stress concept
Auteurs : Matthieu Dumont [France] ; Said Taibi [France] ; Jean-Marie Fleureau [France] ; Nabil Abou-Bekr [Algérie] ; Abdelghani Saouab [France]Source :
- International Journal for Numerical and Analytical Methods in Geomechanics [ 0363-9061 ] ; 2011-08-25.
English descriptors
Abstract
A simple thermo‐hydro‐mechanical (THM) constitutive model for unsaturated soils is described. The effective stress concept is extended to unsaturated soils with the introduction of a capillary stress. This capillary stress is based on a microstructural model and calculated from attraction forces due to water menisci. The effect of desaturation and the thermal softening phenomenon are modelled with a minimal number of material parameters and based on existing models. THM process is qualitatively and quantitatively modelled by using experimental data and previous work to show the application of the model, including a drying path under mechanical stress with transition between saturated and unsaturated states, a heating path under constant suction and a deviatoric path with imposed suction and temperature. The results show that the present model can simulate the THM behaviour in unsaturated soils in a satisfactory way. Copyright © 2010 John Wiley & Sons, Ltd.
Url:
DOI: 10.1002/nag.952
Affiliations:
- Algérie, France
- Haute-Normandie, Région Normandie, Île-de-France
- Châtenay‐Malabry, Le Havre
- Université du Havre
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Geomech.</title><idno type="ISSN">0363-9061</idno><idno type="eISSN">1096-9853</idno><imprint><publisher>John Wiley & Sons, Ltd.</publisher><pubPlace>Chichester, UK</pubPlace><date type="published" when="2011-08-25">2011-08-25</date><biblScope unit="volume">35</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="1299">1299</biblScope><biblScope unit="page" to="1317">1317</biblScope></imprint><idno type="ISSN">0363-9061</idno></series><idno type="istex">013B336468B4AD1382B71BF67E640201103D339C</idno><idno type="DOI">10.1002/nag.952</idno><idno type="ArticleID">NAG952</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0363-9061</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>THM behaviour</term><term>effective stress concept</term><term>elasto‐plastic constitutive law</term><term>unsaturated soils</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A simple thermo‐hydro‐mechanical (THM) constitutive model for unsaturated soils is described. The effective stress concept is extended to unsaturated soils with the introduction of a capillary stress. This capillary stress is based on a microstructural model and calculated from attraction forces due to water menisci. The effect of desaturation and the thermal softening phenomenon are modelled with a minimal number of material parameters and based on existing models. THM process is qualitatively and quantitatively modelled by using experimental data and previous work to show the application of the model, including a drying path under mechanical stress with transition between saturated and unsaturated states, a heating path under constant suction and a deviatoric path with imposed suction and temperature. The results show that the present model can simulate the THM behaviour in unsaturated soils in a satisfactory way. Copyright © 2010 John Wiley & Sons, Ltd.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Haute-Normandie</li><li>Région Normandie</li><li>Île-de-France</li></region><settlement><li>Châtenay‐Malabry</li><li>Le Havre</li></settlement><orgName><li>Université du Havre</li></orgName></list><tree><country name="France"><region name="Région Normandie"><name sortKey="Dumont, Matthieu" sort="Dumont, Matthieu" uniqKey="Dumont M" first="Matthieu" last="Dumont">Matthieu Dumont</name></region><name sortKey="Fleureau, Jean Arie" sort="Fleureau, Jean Arie" uniqKey="Fleureau J" first="Jean-Marie" last="Fleureau">Jean-Marie Fleureau</name><name sortKey="Saouab, Abdelghani" sort="Saouab, Abdelghani" uniqKey="Saouab A" first="Abdelghani" last="Saouab">Abdelghani Saouab</name><name sortKey="Taibi, Said" sort="Taibi, Said" uniqKey="Taibi S" first="Said" last="Taibi">Said Taibi</name></country><country name="Algérie"><noRegion><name sortKey="Abou Ekr, Nabil" sort="Abou Ekr, Nabil" uniqKey="Abou Ekr N" first="Nabil" last="Abou-Bekr">Nabil Abou-Bekr</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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