楼顶钢结构塔楼的抗震分析及设计建议  

Design Suggestions and Dynamic Analysis of Steel Tower atop Tall Building

作　　者：陈道政[1] 李爱群[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《建筑结构》2004年第5期33-35,共3页Building Structure

摘　　要：对高楼顶加钢塔这一结构形式的计算方法进行总结 ,并指出它们的实用范围。通过特例说明当高楼顶钢结构塔楼的基本频率与整体结构的固有频率相同或相近 ,且与地面扰频接近时 ,最易发生共振。经计算分析 ,总结出便于工程应用的简单计算公式 ,可供高楼顶钢塔计算和设计时参考。并结合工程实例 。All kinds of calculating methods on steel tower atop building are discussed and their applicable ranges are given.Earthquake effects amplification coefficient of steel tower is obtained from dynamics equation.It is introduced that whiplash effect can occur when the fundamental frequency of steel tower equals to the natural frequency of the monolithic structure containing main part and prominent part,or the frequency nearly equals to the earthquake frequency.Simple formula based on the mathematical analysis is given. The formula can be easily applied to the calculation and design of high steel tower atop tall building.Suggestions on design of high steel tower atop tall building are recommended.

关 键 词：高层建筑 塔楼 钢结构 鞭鞘效应 抗震设计 放大系数 

分 类 号：TU973.13[建筑科学—结构工程]