【摘要】 利用西安市地震小区划项目中的大量典型土样动三轴试验结果,采用双曲线模型拟合得到了西安地区粉质粘土、粉土、砂土和卵砾土的动剪切模量比和阻尼比随剪应变的变化关系,给出了西安地区上述4种主要土壤类型在8个典型应变下的动参数值。所提结果对研究西安地区地基振动反应和场地地震安全性评价等工作具有参考和借鉴作用。更多还原

【Abstract】 By use of a large number of typical dynamic triaxial test results of soil samples in the Project of Xi’an Seismic Microzoning,the changes of dynamic shear modulus ratio and damping ratio of silty clay,silt,sand and gravel soil with shear train,were obtained by the hyperbolic model fitting and the dynamic parameters of above 4 main types of soil in Xi’an area under 8 typical strains were given.The results of this study are of referential values to the research on ground vibration response and seismic safety evaluation for engineering sites in Xi’an area.更多还原