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    Thermo-Hydro-Mechanical Model for Unsaturated Clay Soils Based on Granular Solid Hydrodynamics Theory

    Source: International Journal of Geomechanics:;2019:;Volume ( 019 ):;issue: 010
    Author:
    Guangchang Yang
    ,
    Bing Bai
    DOI: 10.1061/(ASCE)GM.1943-5622.0001498
    Publisher: American Society of Civil Engineers
    Abstract: Starting from the thermodynamic framework of a mixture, combined with the modified soil-water characteristic curve (SWCC) model, and considering the granular-level energy dissipation caused by temperature and saturation changes, this paper presents a thermo-hydro-mechanical (THM)-coupled model for unsaturated clay soils. The THM-coupled model of unsaturated soils plays an important role in environmental geotechnical engineering. However, the physical basis of THM coupling problems has not been fully clarified. By extending granular solid hydrodynamics (GSH) theory to unsaturated soils, the constitutive relations of mean effective stress and plastic deformation can be quantitatively and theoretically determined. The model was validated by comparison with experimental data in terms of the influences of temperature and suction on compression characteristic, thermal volume change behavior, shear strength properties, and water-retention characteristics of the soil. As a result, the THM coupling behavior of unsaturated soils can be well interpreted.
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      Thermo-Hydro-Mechanical Model for Unsaturated Clay Soils Based on Granular Solid Hydrodynamics Theory

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4260398
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    contributor authorGuangchang Yang
    contributor authorBing Bai
    date accessioned2019-09-18T10:41:49Z
    date available2019-09-18T10:41:49Z
    date issued2019
    identifier other%28ASCE%29GM.1943-5622.0001498.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4260398
    description abstractStarting from the thermodynamic framework of a mixture, combined with the modified soil-water characteristic curve (SWCC) model, and considering the granular-level energy dissipation caused by temperature and saturation changes, this paper presents a thermo-hydro-mechanical (THM)-coupled model for unsaturated clay soils. The THM-coupled model of unsaturated soils plays an important role in environmental geotechnical engineering. However, the physical basis of THM coupling problems has not been fully clarified. By extending granular solid hydrodynamics (GSH) theory to unsaturated soils, the constitutive relations of mean effective stress and plastic deformation can be quantitatively and theoretically determined. The model was validated by comparison with experimental data in terms of the influences of temperature and suction on compression characteristic, thermal volume change behavior, shear strength properties, and water-retention characteristics of the soil. As a result, the THM coupling behavior of unsaturated soils can be well interpreted.
    publisherAmerican Society of Civil Engineers
    titleThermo-Hydro-Mechanical Model for Unsaturated Clay Soils Based on Granular Solid Hydrodynamics Theory
    typeJournal Paper
    journal volume19
    journal issue10
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0001498
    page04019115
    treeInternational Journal of Geomechanics:;2019:;Volume ( 019 ):;issue: 010
    contenttypeFulltext
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