摘要
参照目前国内外试验测得的土的动剪切模量和阻尼比,以及多种土层工况和实际地震动输入下土层地震反应分析计算结果,对袁晓铭等给出的推荐值和《工程场地地震安全性评价工作规范》中给出的数值的合理性进行了对比研究。结果表明,与规范值相比,推荐值与国内外结果更相接近,特别是与国内结果相差不大,且避免了土层地震反应中地表反应谱"矮、粗、胖"现象,较符合客观实际情况,可供无试验资料情形和今后修订规范时参考。
The reasonability of the dynamic shear modulus and dgamping ratio in the code and recommended by Yuan et al. is studied by comparing the existing testing results and analyzing their effects on earthquake ground motion. Compared with the results of the code, Yuan′s results are more reasonable.The latter is coincident with the current results and some unreasonable phenomena in earthquake ground motions do not appear. It can be used in the practice and in revising the code.
出处
《地震工程与工程振动》
CSCD
北大核心
2004年第2期125-133,共9页
Earthquake Engineering and Engineering Dynamics
基金
地震科学联合基金(102033)
中国地震局"十五"重点项目
关键词
动剪切模量
阻尼比
推荐值
规范值
soil
dynamic shear modulus
damping ratio
recommendation value
code value
