采用不同频率循环加载的方式对珠江口海洋原结构软土进行动三轴试验,通过对软土滞回曲线的分析可以了解到土体变形程度、残余塑性变形、刚度和能量耗散能力的变化,结果表明:随着振次的增大,土体刚度和能量耗散能力无明显变化,而变形程度和残余塑性变形减小;随着荷载的增大,变形程度越大,残余塑性变形先增大后减小,刚度和能量耗散能力减小;随着频率的增大,四个参数均减小。 The dynamic and triaxial tests of the soft soil in the Pearl River Estuary are carried out by cyclic loading with different frequencies. The analysis of the hysteresis curve of the soft soil shows that the degree of deformation, the residual plastic deformation, the change of the stiffness and the energy dissipation capacity The results show that with the increase of vibration times, the stiffness and energy dissipation capacity of soil do not change obviously, but the degree of deformation and the residual plastic deformation decrease. With the increase of load, the deformation degree increases and the residual plastic deformation first Increase and then decrease, stiffness and energy dissipation ability decreases; as the frequency increases, all four parameters decrease.