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论文类型：会议论文

发表时间：2010-10-10

收录刊物：EI、CPCI-S、Scopus

卷号：1

页面范围：433-438

关键字：Poisson's ratio; triaxial test; principal stress ratio; sandy soil

摘要：Poisson's ratio of soil is a significant parameter which reflects the characteristic of soil lateral deformation. The importance of this mechanical property has not been appreciated as much as it deserves. The variation of Poisson's ratio is obtained through triaxial test based on local deformation measurement of soil specimen. Because the arrangement and structure of particles are analogous under the same testing method and density, the pattern of axial strain-radial strain curve under different cell pressure is similar. The tangential Poisson's ratio of soil increases when the principal stress ratio increases. It is important to establish the relationship between Poisson's ratio and principal stress ratio.