A New One-Dimensional Thermal Elastic-Viscoplastic Model for the Thermal Creep of Saturated Clayey Soils

Temperature significantly affects the mechanical properties of geomaterials, particularly creep behavior soft clayey soils. Thus, an appropriate constitutive model to describe time-dependent stress-strain soils at various temperatures is necessary. This study performed temperature-controlled oedometer tests on two soils: Hong Kong marine deposit (HKMD) and kaolinite clay (kaolin). The thermally-induced strain rates under different temperature paths were investigated discussed. A novel one-dimensional (1D) thermal elastic viscoplastic (TEVP) was developed based existing 1D elasto (EVP) model. In proposed model, rate can be described using three state variables: effective stress, strain, temperature. conveniently implemented in analysis with equivalent time concept. prediction results TEVP consistent experimental data for HKMD kaolin.