長期繰返しせん断を受ける粘土の間隙水圧および変形予測

抄録

The purpose of the present paper is to depict the clay behaviour of long-term drained cyclic loading. The empirical relations of time-dependent shear deformation and cyclically induced pore pressure were formulated through the undrained cyclic triaxial test on plastic marine clay which is assumed to be close to an element test. An analytical model was presented by combination of the equation of induced pore pressure with the Terzaghi's type of consolidation theory. The model successfully explained the behaviour of generation and dissipation of pore pressure and volumetric change in clay during cyclic loading. It was suggested from the result of finite element analysis that the proposed model should be a clue to predict the deformation, settlement and stability of soft clay under long-term cyclic loading with inclusion of drainage.