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本文探讨了软粘土的振动弱化特性以及动模量、累积偏应变、阻尼比与振动弱化参数之间的关系，并将累积偏应变、动模量的振动弱化关系用于软粘土地基的动变形（震陷）计算。用该方法对一实际工程的软粘土地基在地震作用下的动变形进行了计算，计算结果与实测的震陷值基本吻合。
This paper discusses the relationship between the vibrational weakening properties of soft clay and the dynamic modulus, cumulative partial strain, damping ratio and vibration weakening parameters, and applies the relationship between cumulative partial strain and vibration modulus weakening for dynamic deformation of soft clay ground. (Earthquake) calculation. This method is used to calculate the dynamic deformation of a soft clay foundation under practical operation. The calculated results are basically consistent with the measured seismic depression values.