中文摘要：

基于MTS动三轴试验，研究了砂土液化过程中振动孔压的发展规律，获得了偏压固结条件下振动孔压计算模式．结合应力-应变滞回环，将液化过程划分为4个阶段，并对各阶段的轴向应变发展特点进行了分析．通过研究液化过程中动模量的衰减特性，得到了动弹性模量和动剪切模量随应变发展的衰减特性曲线，并研究了砂土的抗液化强度。

英文摘要：

The development rule of dynamic pore water pressure during sand liquefaction process is studied based on the MTS dynamic tri-axial test, and the dynamic pore water pressure curve is obtained in anisotropic consolidation. Then, the sand liquefaction process is divided into four phases according to the different behavior of hysteresis loop, during which the development characteristics of axial strain are analyzed. The decay curves of dynamic elastic module and dynamic shear module are presented on the basis of the decay characteristics of dynamic module. Besides, the strength resisting liquefaction is studied.