【摘要】 地震时高楼顶钢结构塔楼将产生显著的鞭梢效应。目前对该类结构的设计通常采用钢塔与主体结构分离计算,有必要通过分析选取适当的设计计算方法。文中基于振型分解法,提出该类结构的简化设计计算方法,并以一顶部安装钢塔的33层钢筋混凝土高层建筑结构设计为例,对该方法的可行性与准确性进行了分析。与整体结构有限元分析结果的比较也表明,该方法在实际结构设计中具有良好的可操作性与较高的准确性。更多还原

【Abstract】 There will be obvious whiplash effects on steel towers built atop of tall buildings under earthquakes.The separating calculation method is generally employed to design this kind of structure,and it is necessary to chose the appropriate calculation and design method.Based on mode decomposition method,this paper summarized the simplified design method for this kind of structure.The applicability and accuracy of this method was analyzed with an example of a 33-floored reinforced concrete tall building structure with a steel tower built atop.The comparison between the simplified calculation results with the integral finite element analysis ones showed that the method holds a great deal of applicability and high accuracy.更多还原