Abstract
Based on undrained cyclic shear experiments conducted on a saturated Ottawa sand in the Torsional Simple Shear Device, the writers propose Eqs. (8) and (10), which respectively pre dict pore-pressure rise in the above soil under uniform and non-uniform dynamic shear stresses. These equations take into consideration the stress loading history, number of stress cycles and stress intensity function. There is excellent agreement between the experimental pore-pressure values and the analytical predictions as shownin Fig. 7 (for uniform) and in Figs. 10, 11, 12, 13 and 14 (for non-uniform) dynamic loadings.
