中文摘要：

使用循环单剪系统，在100kPa、200kPa、300kPa三种固结压力下，通过分级施加动剪应变对一粉质粘土进行了原状土样的动力试验。研究了应变、固结压力对动剪模量和阻尼比的影响，并得到了该粉质粘土的最大动剪模量Gdmax和G／Gdmax-γd、D／Ddmax-γd曲线。本文的试验方法和数据分析对使用循环单剪试验研究土的动力特性有较好的参考作用。

英文摘要：

The dynamic tests for the undisturbed samples of silty clay are performed under the consolidation pressures lOOkPa, 200kPa and 300kPa by using the cyclic simple shear system and by changing the values of the dynamic shear strain. The influences of the dynamic shear strain and the consolidation pressures on the dynamic properties are studied, the maximum dynamic modulus Gdmax and the curves for the G/Gdmax-γd and D/Ddmax-γd are obtained. The testing method and the data analysis in this paper provide a reference for cyclic simple shear tests on dynamic properties of soil.