【摘要】 在第三代Benchmark问题的九层钢框架结构模型的基础上,利用ETABS有限元软件,建立了9层钢框架三维有限元模型。定义了用于模拟铅芯橡胶支座性能的连接属性,分别采用模态分析、反应谱分析和时程分析三种方法,比较了隔震结构和非隔震结构的地震反应。分析结果表明,隔震结构的地震反应与非隔震结构相比降低明显,隔震结构具有良好的隔震性能。更多还原

【Abstract】 On the basis of a nine-story steel frame structure from the third generation benchmark problems,the three-dimensional finite element modal of nine-story steel frame structure is established by using ETABS finite element software.The connection properties is defined,in order to simulate lead rubber bearing’ s performance,the earthquake response of isolation structure and non-isolation structure is compared by using modal analysis、response spectrum analysis and time-history analysis methods respectively.Analysis results show that the seismic response of base isolation structure is significantly lower than the non-isolation structure,the base isolation structure has good isolation performance.更多还原