场地土动剪模量比和阻尼比对工程场地设计地震动参数的影响  

INFLUENCE OF DYNAMIC SHERA MODULUS RATION AND DAMPING RATION ON DESIGN SEISMIC GROUND PARAMETERS OF ENGINEERING SITE

作　　者：曲乐[1] 柯小雯 邹博[1] 臧石磊[1] 曾冠男 杨晓东[1] 

机构地区：[1]辽宁省地震局,辽宁沈阳110034 [2]辽宁省地震海啸预警中心,辽宁沈阳116000

出　　处：《防灾减灾学报》2015年第2期5-13,共9页Journal of Disaster Prevention And Reduction

摘　　要：利用闽南地区动剪模量比和阻尼比实验数据,对7种典型土类动剪模量比和阻尼比进行建模和分析,给出闽南地区典型土类动剪模量比和阻尼比的推荐值;通过ESE土层地震反应分析模块,计算水平成层场地的地震反应,研究土的动剪模量比和阻尼比、土层剪切波速的变异性对场地地表峰值加速度及其反应谱的影响,对于指导地震安全性评价工作中合理确定场地地震动参数具有一定的参考价值。Study on typical data of dynamic shear modulus ratio and damping ratio from the southern Fujian province, the recommended value of dynamic shear modulus ratio and damping ratio is concluded. And the site earthquake response analysis with horizontal—layered soil are analyzed by ESE software, The paper discussed the effects of the variability of soil dynamic parameters, including soil dynamic shear modulus ratio,damping ratio and shear velocity, on peak value of ground surface acceleration and its response spectra of engineering sites.The results would give some references to guide the determination of the ground motion parameters in seismic safety evaluation work.

关 键 词：动剪模量比 阻尼比 地震动参数 土层地震反应 

分 类 号：P315.9[天文地球—地震学]