【摘要】 目的研究巨型框架悬挂体系共振效应,得出若干个有益结果,为抗震工程设计提供参考.方法基于简化准则,将巨型框架悬挂体系的格构式主体结构简化为梁、柱模型后,利用SAP2000软件讨论其模型的合理性;其次利用弹塑性静力分析方法将梁、柱模型简化为层模型,通过分析证实层模型的有效性.在此基础上采用"短周期地震波"和"长周期地震波",利用自编程序进行弹塑性地震响应时程分析.结果"长周期地震波"产生的响应比"短周期地震波"产生的响应大,其比值为1.87~2.8,甚至累积塑性变形倍数iη的比值达到587.结论在进行周期比较长的结构设计时,除了按《建筑抗震设计规范》(GB 50011-2001)确定地震动最大加速度峰值以外,还要综合考虑其地震动速度谱或能量谱的特性以及地震动作用时间等因素.更多还原

【Abstract】 Several useful results were obtained by the research of mega-frame suspension system resonance effects,which provides a reference for the seismic design.Based on the simplification,the lattice major structure of the mega-frame suspended system was simplified to a beam-column model,and the model′s rationality has been checked by SAP2000.Then the beam-column model was simplified again to the layer model through the elastic-plastic static analysis.The validity of the layer model has been proved through the analysis.According to the study,with"short-period seismic waves"and"long-period seismic waves",the elastic-plastic seismic response time by self-compiling program was analyzed.The results indicate that the"Long-period seismic waves"generated bigger seismic responses than the"short-period seismic waves",the ratio of them was 1.87 to 2.8,even the ratio of the multiple of cumulative plastic deformation was 587.When such a structure is designed for a relatively long period,the maximum acceleration peak of earthquake motion is determined,according not only to the"Code for Seismic Design of Buildings"(GB 50011-2001),but also to the properties of velocity spectrum,energy spectrum,seismic time,and other factors.更多还原