Abstract
A series of cyclic torsional shear tests has been carried out to investigate the effect of drainage with preshearing on behavior of dense sand. The results of experiment indicate: (1) the magnitude of excess pore pressure and shear strain after drainage history is influenced by both the principal stress direction and the magunitude of cyclic stress ratio at cyclic loading, (2) the variations of excess pore pressure and shear strain with number load cycles after drainage history depends on principal stress direction, (3) recompression volumetric strain due to dissipation of cyclic-induced excess pore pressure can be related to the maximum shear strain observed during cyclic shear, irrespective of the angle of principal stress direction, cyclic stress ratio and drainage history.
