Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Three-Dimensional Fully Coupled Thermo-Hydro-Mechanical Model for Thaw Consolidation of Permafrost
A fully coupled three-dimensional (3D) thermo-hydro-mechanical (THM) model is developed for simulating the complex multiphysics process of permafrost thaw. The 3D formulation allows the analysis of thaw consolidation problems with complex geometry and boundary conditions. The thermal, hydraulic, and mechanical fields are coupled in this model. Governing equations are derived based on the laws of conservation of each field: conservation of energy for the thermal field, conservation of mass for the hydraulic field, and conservation of momentum for the mechanical field. Physical processes such as heat conduction, phase change, thermal convection, fluid flow due to pore water pressure, elevation, thermal gradients, and force equilibrium based on effective stress theory are considered in this model. The model is then applied to simulate the thaw consolidation of permafrost. The simulation results show that excess pore water pressure is generated in the soil during thawing. The soil then experiences a time-dependent settlement following the dissipation of excess pore water pressure. The results prove that the THM model adequately captures the thaw consolidation process of permafrost.
Three-Dimensional Fully Coupled Thermo-Hydro-Mechanical Model for Thaw Consolidation of Permafrost
A fully coupled three-dimensional (3D) thermo-hydro-mechanical (THM) model is developed for simulating the complex multiphysics process of permafrost thaw. The 3D formulation allows the analysis of thaw consolidation problems with complex geometry and boundary conditions. The thermal, hydraulic, and mechanical fields are coupled in this model. Governing equations are derived based on the laws of conservation of each field: conservation of energy for the thermal field, conservation of mass for the hydraulic field, and conservation of momentum for the mechanical field. Physical processes such as heat conduction, phase change, thermal convection, fluid flow due to pore water pressure, elevation, thermal gradients, and force equilibrium based on effective stress theory are considered in this model. The model is then applied to simulate the thaw consolidation of permafrost. The simulation results show that excess pore water pressure is generated in the soil during thawing. The soil then experiences a time-dependent settlement following the dissipation of excess pore water pressure. The results prove that the THM model adequately captures the thaw consolidation process of permafrost.
Three-Dimensional Fully Coupled Thermo-Hydro-Mechanical Model for Thaw Consolidation of Permafrost
Liew, Min (Autor:in) / Xiao, Ming (Autor:in)
Geo-Congress 2023 ; 2023 ; Los Angeles, California
Geo-Congress 2023 ; 190-201
23.03.2023
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Three-Dimensional Fully Coupled Thermo-Hydro-Mechanical Model for Thaw Consolidation of Permafrost
| British Library Conference Proceedings | 2023
Three dimensional analysis of large strain thaw consolidation in permafrost
| Springer Verlag | 2012
Three dimensional analysis of large strain thaw consolidation in permafrost
| British Library Online Contents | 2012
Three dimensional analysis of large strain thaw consolidation in permafrost
| Online Contents | 2012