Abstract
Recently, ground flow deformation mechanism considering pore water migration has been proposed. The mechanism is able to explain ground flow failure reasonably. However, there is a few study about the characteristic of soil that were injected pore water after cyclic shear histories. In this study, we injected the pore water to the specimen after giving the undrained cyclic shear stress using simple shear test. According to these experiments, it is shown that the characteristic of soil deformation after the cyclic shear history greatly depends on the magnitude of the shear strain during cyclic shear. And, it is shown that the soil skeleton is damaged by a positive dilatancy of opposite direction of initial shear stress.
