【摘要】 本文通过对砂土液化机制的研究，建立了临界液化状态下的超静孔隙水压力随地震地面加速度及地震持续时间的关系式，利用该模型可以确定砂土层达到临界液化状态所需地震持续时间及液化可能发生的深度，并根据唐山地区的砂土液化资料进行了实例分析。更多还原

【Abstract】 Through researching in the intermechanism of sandy soil liquefaction, the paper advances the formula of excess pore waterpressure accumulating with ground acceleration and sustained time of earthquakeIt can ascertain the sustained time of earthquake that sandy soil reaches critical liquefacient state and the biggest buried depth of liguefaction This formula is checked by the data of sandy soil liguefaction of Tangshan area更多还原