饱和砂性土壤在振动作用下可能发生液化或相当大的振动孔隙水压力,使土壤的抗剪强度大为降低,甚至发生破坏.关于饱和砂土的液化问题,国內外會有许多学者进行过研究,伹迄今看法并不一致.我们根据黄文熙教授提出的振动三轴试验方法,研究了饱和砂土的密度、应力状态、振动加速度对振动孔隙水压力的影响,以及饱和砂土的振动极限平衡问题.这对估计不易排水的砂体,由于振动发生破坏时,可能产生的最大孔隙水压力,尚有参考价值. Under the effect of vibration, saturated sandy soil may liquefy or have considerable vibratory pore water pressure, which will greatly reduce the shear strength of the soil and even cause damage. On the issue of liquefaction of saturated sand, many scholars at home and abroad have conducted Research has not been consistent with what we have seen so far. Based on the triaxial test method proposed by Prof. Huang Wenxi, we studied the effects of density, stress state, and vibration acceleration of saturated sand on the pore water pressure and the limit equilibrium of saturated sand. This estimate of the maximum pore water pressure that may be generated when the sand body is difficult to drain due to vibration damage is still of reference value.