【摘要】 根据现行的抗震规范,结合具体的工程实例,通过建立空间三维有限元模型,分析了钢结构跃层加层结构的动力特性,并分别用振型分解反应谱法和时程分析法,对分离式和整体式外套框架跃层加层结构进行了地震反应分析,比较了两种结构的抗震性能,计算结果可为该结构的抗震设计提供参考。更多还原

【Abstract】 According to the code for seismic design of building and combining with two study cases,the dynamic characteristics of adding extra-floors spanning existing building with steel structure are analyzed through making three-dimensional models,and the seismic responses of the separated and integral coat framing are obtained by using response spectrum method and time history analysis method,the results are compared and studied,which can be served as the references of such structure design.更多还原