摘要：Starting from the conservation laws, field equations governing the dynamic behaviour of unsaturated soils are presented. The coupling between solid and fluid phases is enforced according to the effective stress principle taking suction dependency and volume change of the effective stress parameters into account. The hydraulic hysteresis is accounted for through the effective stress parameter and the soil water characteristic curve. The spatial discretization of the governing equations is achieved using finite element method, whereas the time integration is conducted using the Newmark scheme. The numerical results are then presented, and the effect of hydraulic hysteresis on dynamic response of unsaturated soils is particularly emphasized.
