顶部安装钢塔的高层建筑结构简化设计
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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。
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.
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.
引文
[1]曲淑英,王心健,初明进.高层结构的鞭梢效应分析[J].工业建筑,2001,31(10):28-30.
[2]丁幼亮,李爱群,陈道政,等.顶部安装钢塔的高层建筑动力特性研究[J].特种结构,2004,21(3):67-70.
[3]Kimura E,Konno T.Earthquake effects on steel towerfor microwave antennas atop building[J].Review ofthe Electrical Communication Laboratories,1975,23(3-4).
[4]丁幼亮.带钢塔楼高层建筑的抗震设计方法研究[D].南京:东南大学,2003.
[5]陈道政,韩立业,李爱群.高楼顶钢结构塔楼的简化计算及设计建议[J].特种结构,2004,21(2):23-25.
[6]孙晓春.屋顶设置钢塔的高层结构体系抗震概念设计和简化计算方法[J].电信工程技术与标准化,2005,(9):35-38.
[7]陈力,丁幼亮.非比例阻尼对高层建筑顶部钢塔楼地震反应的影响分析[J].特种结构,2006,23(1):44-46.
[8]东南大学土木工程学院,江苏省建筑设计研究院,南京市建设委员会.南京新世纪中心主楼钢塔结构抗风、抗震及减振分析报告[R].2004.
[9]张志强,李爱群.某钢筋混凝土结构高层钢塔风振控制及其应用[J].特种结构,2003,20(4):37-39.
[2]丁幼亮,李爱群,陈道政,等.顶部安装钢塔的高层建筑动力特性研究[J].特种结构,2004,21(3):67-70.
[3]Kimura E,Konno T.Earthquake effects on steel towerfor microwave antennas atop building[J].Review ofthe Electrical Communication Laboratories,1975,23(3-4).
[4]丁幼亮.带钢塔楼高层建筑的抗震设计方法研究[D].南京:东南大学,2003.
[5]陈道政,韩立业,李爱群.高楼顶钢结构塔楼的简化计算及设计建议[J].特种结构,2004,21(2):23-25.
[6]孙晓春.屋顶设置钢塔的高层结构体系抗震概念设计和简化计算方法[J].电信工程技术与标准化,2005,(9):35-38.
[7]陈力,丁幼亮.非比例阻尼对高层建筑顶部钢塔楼地震反应的影响分析[J].特种结构,2006,23(1):44-46.
[8]东南大学土木工程学院,江苏省建筑设计研究院,南京市建设委员会.南京新世纪中心主楼钢塔结构抗风、抗震及减振分析报告[R].2004.
[9]张志强,李爱群.某钢筋混凝土结构高层钢塔风振控制及其应用[J].特种结构,2003,20(4):37-39.
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