The degradation of undrained shear strength is related to the cyclic strain and accumulated pore pressure produced by undrained clyclic loading.

• 并将波浪荷载作用使土样内孔压升高，有效应力降低，形成拟超固结现象的理论，应用到土样不排水抗剪强度衰减与平均累积孔压之间关系的分析；