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

作　　者：邹立华[1] 赵人达[1] 

机构地区：[1]西南交通大学

出　　处：《计算力学学报》2005年第2期252-256,共5页Chinese Journal of Computational Mechanics

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。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.

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 

分 类 号：TU352.12[建筑科学—结构工程] TU973.2