LARGE-STRAIN STATIC AND DYNAMIC SEMISATURATED SOIL BEHAVIOR

The theoretical and computational aspects of large strain static and d ynamic partially saturated soil analysis are presented. The soil is as sumed to be a three-phase material with a solid phase which may yield according to a generalized plasticity theory, whose liquid phase flows according to Darcy's law and where gaseous phase remains equal to the external ambient pressure. Permeability varies not only as a function of the degree of water saturation, but also as a function of the void ratio. These aspects are shown on several examples.