摘要
某高层住宅位于地震高烈度区河北省唐山市,为提高该结构抗震性能对其进行隔震设计;为了研究采用隔震技术的剪力墙结构的抗震性能,分别建立了非隔震结构和隔震结构有限元模型并进行非线性时程分析。分析结果表明:隔震层偏心率和抗风设计结果均满足规范要求;多遇地震作用下,隔震结构水平减震系数不大于0.38,上部结构最大层间位移角小于1/800;罕遇地震作用下,黏滞阻尼器有效控制了隔震层变形,各支座均未出现受拉现象,隔震结构抗震性能良好,隔震方案可行。
The design method of hybrid base isolation was applied in a high-rise shear wall structure in Tangshan which is a region of high earthquake intensity. In order to analyze the seismic performance of the shear wall structure with isolation technology,the finite element models of the non-isolated and isolated structures were established and the nonlinear time-history analysis was conducted. The analysis results show that the eccentricity and the design result of wind resistance meet the requirements of code. The horizontal seismic decrease coefficient is not greater than 0. 38 and the maximum inter story drift of superstructure is less than 1/800 under frequent earthquake action. Under rare earthquake action,the viscous dampers can effectively reduce the deformation of the isolation layer. None of the isolation bearings is tensioned. All the results verify that the isolated structure has a good seismic performance and the isolation scheme is feasible.
出处
《建筑结构》
CSCD
北大核心
2017年第S2期325-329,共5页
Building Structure
基金
国家自然科学基金(51678302)
江苏省研究生科研创新计划项目(KYCX17_0911)
关键词
隔震
黏滞阻尼器
时程分析
减震系数
isolation
viscous damper
time-history analysis
seismic decrease coefficient
