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中文摘要：
通过对杭州饱和软粘土进行双向激振循环三轴试验研究了强震作用下饱和软粘土的变形特性。重点分析了循环应力比、径向循环应力比与初始剪应力等因素对双向激振下饱和软粘土残余应变与软化指数之间关系的影响。通过引入综合影响参数对试验数据进行归一化，建立了双向激振下饱和软粘土残余应变模型。通过将该模型引入到修正的1wan模型中对双向激振下饱和软粘土的应力-应变关系进行了描述，得到了与实测值比较吻合的结果，证明了所提残余应变模型的合理性。
英文摘要：
The cyclic deformation behavior of Hangzhou soft clay under strong tional cyclic triaxial tests. The effects of cyclic stress ratio, radial cyclic stress earthquake was studied by bidirecratio and initial shear stress on the relationship between residual strain and degradation index were investigated. An empirical residual strain model for bidirectional cyclic loading was proposed by introducing comprehensive impact parameter. The model was further introduced into modified Iwan model to simulate the stress - strain relationship of soft clay. The comparison of simulation results with test data proves the proposed model is correct.
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