Formulation of thermo-hydro-mechanical coupling behavior of unsaturated soils based on hybrid mixture theory

摘要: Thermo-Hydro-Mechanical (THM) coupling processes in unsaturated soils are very important both theoretical researches and engineering applications. A coupled formulation based on hybrid mixture theory is derived to model the THM behavior of soils. The free-energy dissipative functions for different phases from Taylor’s series expansions. Constitutive relations behaviors soils, which include deformation, entropy change, fluid flow, heat conduction, dynamic compatibility conditions interfaces, then established. number field equations shown be equal unknown variables; thus, a closure this problem In addition modifications physical conservation with effect terms, constitutive equations, consider between elastoplastic deformation soil skeleton, transfer, also derived.