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邹立华,赵人达.土-基础相互作用隔震体系地震随机响应分析[J].计算力学学报,2005,22(2):252~256
土-基础相互作用隔震体系地震随机响应分析
Analysis of the random responses to earthquake of the subsoil-base-interaction isolated system
  修订日期:2003-06-11
DOI:10.7511/jslx20052051
中文关键词:  隔震体系  随机响应分析  相互作用  基础  平稳随机过程  隔震结构  弹性半空间  粘性阻尼器  各向同性  地震激励  分析结果  直接影响  地基土  模拟
英文关键词:soil-structure,isolation,random response
基金项目:
邹立华  赵人达
[1]西南交通大学,四川成都610031//兰州交通大学土木工程学院,甘肃兰州730070 [2]西南交通大学,四川成都610031
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中文摘要:
      视地基土为各向同性的弹性半空间,用弹簧-粘性阻尼器模拟土对结构的影响,将地震激励模拟为平稳随机过程,对基础隔震体系的随机响应进行了分析。分析结果表明,地基土的性质对隔震结构有直接影响,但其影响比非隔震结构小得多。
英文摘要:
      With the impact of subsoil on structure modeled by a spring-viscous restraint, the random responses to earthquake of the base-isolated system is analyzed in this paper, with the earthquake excitation simulated as a smooth random process and the subsoil taken as an isotropic elastic semi-space. The influences of the site soil and damping of the isolating floor on structural responses to earthquake are discussed respectively. The result indicates that the properties of the subsoil have a direct impact on the isolated system, which is much smaller than that on the non-isolated system.
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