摘要
针对国内某大型隔震建筑,借助SAP2000建立下部结构—隔震层—上部结构整体系统的空间模型,就隔震结构的振型与频率、质心分布进行了分析和橡胶垫布置的改进计算。以减小上、下部结构地震响应为目的,对不同型号橡胶垫的选用及布置方案进行改进。对改进后的刚心位置、周期与振型、隔震垫扭转角变化、隔震垫面压变化、水平位移限值进行了分析,结果表明,通过改进,能够有效地减少扭转现象,达到了较好的效果,为隔震结构设计提供了方法与实例。
Based on a large seismically isolated structure,the paper analyzed the frequency and mode,the distribution of mass center and the improvement of rubber packing arrangement by SAP2000.In this model,the reaction of the substructure,the seismically isolated structure rubber and the superstructure is concerned.After the improvement of the type and position of the rubber packing,the change of the rigidity center,the period and mode,and the torsion angle of the rubber packing as well as the limited value of horizontal displacements was analyzed.The results show that the torsion after the improvement can give reduced. It could be a reference to the design of seismically isolated structures.
出处
《建筑科学》
北大核心
2008年第5期56-58,63,共4页
Building Science
关键词
隔震结构
振型
频率
质心
隔震垫
改进
seismically isolated structure
mode
frequency
mass center
rubber packing
improvement
