观光塔式高柔结构的重力二阶效应分析
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摘要
观光塔形式结构既具有高耸结构典型特征,又因顶部观光平台集中了较大的竖向和水平荷载,使其对重力二阶效应更加敏感。通过建立一系列不同结构形式和不同高宽比的观光塔简化模型,利用有限元分析软件,对风荷载作用下塔体的重力二阶效应进行计算分析。根据计算结果,分析对比不同形式塔体顶部最大位移和底部最大反力对重力二阶效应的敏感程度。
The sight-seeing tower is more sensitive with gravity second-order effects,because not only it has the typical model characteristic of high-rise structures,but also its top sight-seeing trip bench concentrates much more vertical and horizontal loads.By building a series of simplified models with different structure types and different ratios of high to width,this paper makes calculation and analysis on the gravity second-order effects with the tower under the action of wind loads.According to the result of the calculation,it contrasts the gravity second-order effects sensitive degree of different tower' s top biggest displacement and bottom biggest force.
The sight-seeing tower is more sensitive with gravity second-order effects,because not only it has the typical model characteristic of high-rise structures,but also its top sight-seeing trip bench concentrates much more vertical and horizontal loads.By building a series of simplified models with different structure types and different ratios of high to width,this paper makes calculation and analysis on the gravity second-order effects with the tower under the action of wind loads.According to the result of the calculation,it contrasts the gravity second-order effects sensitive degree of different tower' s top biggest displacement and bottom biggest force.
引文
[1]GB 50135—2006高耸结构设计规范[S].北京:中国计划出版社,2006.
[2]范圣刚,舒赣平,姚一丹,等.南京奥体新闻科技中心整体分析及钢屋盖设计[J].建筑结构,2005,35(11):43-47.
[3]GB500017—2003钢结构设计规范[S].北京:中国计划出版社,2003.
[4]刘岩伟.高耸钢塔结构体系的抗风与抗震分析[D].南京:东南大学,2004.
[5]陆飞.南京电视塔风振主动控制工程实施的若干问题研究[D].南京:东南大学,2002.
[6]蔡邵怀.现代钢管混凝土结构[M].北京:人民交通出版社,2003.
[7]张自强.合肥电视塔的风振及地震响应的振动控制研究[D].南京:东南大学,2003.
[2]范圣刚,舒赣平,姚一丹,等.南京奥体新闻科技中心整体分析及钢屋盖设计[J].建筑结构,2005,35(11):43-47.
[3]GB500017—2003钢结构设计规范[S].北京:中国计划出版社,2003.
[4]刘岩伟.高耸钢塔结构体系的抗风与抗震分析[D].南京:东南大学,2004.
[5]陆飞.南京电视塔风振主动控制工程实施的若干问题研究[D].南京:东南大学,2002.
[6]蔡邵怀.现代钢管混凝土结构[M].北京:人民交通出版社,2003.
[7]张自强.合肥电视塔的风振及地震响应的振动控制研究[D].南京:东南大学,2003.
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