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自1976年唐山丰南地震以来,我国在关于土的动力特性方面的研究进行了大量的工作,但对于粘性土的动力特性研究甚少。几年来,我们对塘沽新港地区的原状饱和软粘土摸拟地震力作用下的动力特性,特别是对粘性土的动强度作了一些试验研究,从而提出确定粘土动强变的一种简单可行的试验方法——“三个试样逐级加荷法”。并且论证了这种方法的可行性。对动力作用下粘土的动模量～应变曲线的归一化进行了探讨。
Since the Tangshan Fengnan earthquake in 1976, a lot of work has been done on the dynamic characteristics of soil in China, but little research has been done on the dynamic characteristics of clayey soil. In the past few years, we have simulated the dynamic characteristics of the saturated soft clay of the original soft clay in the Tanggu Xingang area, and we have conducted some experiments on the dynamic strength of the clay in order to propose a simple and feasible method for determining the dynamic strength of the clay. Test Method - “Three-stage Gradual Loading Method”. And demonstrated the feasibility of this method. The normalized dynamic modulus-strain curve of clay under dynamic loading was discussed.