Abstract: The dynamic response of sat urated sand deposits to earthquake loading isinvestigated through an“Engi neering Approach”.Considering the mechanism of dynamicresp onse of s at urated sands to cyclic loading,a simplified model is constructed,and theequation for describing the response and the diffusinn equatfon for describing generationand dissipation of porewater pressure are given.These equations are solived numerically by the Newmark’s method and finit edifferences method,The dynamic response of a satnrat...