西安地区典型土动剪切模量比和阻尼比的统计研究
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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。
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.
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.
引文
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[4]张亚军,兰宏亮,崔永高.上海地区土动剪切模量比和阻尼比的统计研究[J].世界地震工程,2010,26(2):171-175.Zhang Yajun,Lan Hongliang,Cui Yonggao.Statistical stuadies on shear modulus ratios and damping ratios of soil in Shanghai area[J].WorldEarthquake Engineering,2010,26(2):171-175.
[5]胡庆兴,刘雪珠,丛卫民等.淮安市典型土动力特性的实验研究[J].地震工程与工程振动,2003,23(6):144-148.Hu Qingxing,Liu Xuezhu,Cong Weimin,et al.Experimental stuty on dynamic property of typical soils for Huanan city[J].Earthquke Engineeringand Engineering Vibration,2003,23(6):144-148.
[6]何晓民,陈志强,张婷.武汉砂土动剪切模量与阻尼比的试验研究[J].世界地震工程,2010,26(增刊):41-45.He Xiaomin,Chen Zhiqiang,Zhang Ting.Experimental studies on dynamic shear modulus and damping ratio of sandy soil in Wuhan[J].WorldEarthquake Engineering,2010,26(supplement):41-45.
[7]张向东,冯胜洋,张建俊.辽西风积土动剪切模量与阻尼比特性试验研究[J].力学与实践,2011,33(1):48-52.Zhang Xiangdong,Feng Shengyang,Zhang Jianjun.Experimental study on dynamic shear modulus and damping ratio of aeolian soil in west liaoningprovince[J].Mechanics in Engineering,2011,33(1):48-52.
[8]蔡辉腾,秦娟,许莉等.泉州地区典型土动剪切模量及阻尼比的试验研究[J].工业建筑,2011,41(5):104-108.Cai Huiteng,Qin Juan,Xu Li,et al.Testing study on dynamic shear modulus and damping ratio of typical soils in Quanzhou area[J].IndustralConstuction,2011,41(5):104-108.
[9]倪万魁,韩启龙.黄土土性参数的统计分析[J].工程地质学报,2001,9(1):62-67.Ni Wankui,Han Qilong.Statistical analysis of physical and mechanical indexes of the typical loess[J].Journal of Engineering Geology,2001,9(1):62-67.
[10]袁晓铭,孙静.非均等固结下砂土最大动剪切模量的增长模式及Hardin公式的修正[J].岩土工程学报,2005,27(3):264-269.Yuan Xiaoming,Sun Jing.Model of maximum dynamic shear modulus of sand under anisotropic cinsolidation and revision of Hardins formula[J].Chinese Journal of Geotechnical Engineering,2005,27(3):264-269.
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