江苏太仓广播电视发射塔塔柱的稳定性分析  

Tower Column Stability Analysis of JiangSu Tai Cang Radio and Television Tower

作　　者：夏大桥[1] 陶亚东[1] 

机构地区：[1]中广电广播电影电视设计研究院,北京100045

出　　处：《特种结构》2010年第3期54-55,63,共3页Special Structures

摘　　要：在钢塔结构中,塔柱是主要的受力构件,其稳定性直接关系到结构整体的安全,在工程设计中不容忽视。对于节点连接复杂的塔体结构,由于考虑到其他相连杆件的约束作用,一般不能简单将塔柱两端视为铰接,此时钢塔柱的计算长度在现行设计规范中没有明确说明,不能简单按照规范方法进行设计。为此,本文以江苏太仓市电视塔工程为例,选取其代表性结构单元,通过线性和非线性屈曲分析方法对钢塔柱在整体结构中的稳定性进行了计算。通过本文的研究,给出了塔柱的计算长度系数的估算方法,并针对太仓塔工程给出了合理的塔柱计算长度系数值。In steel tower structures, the columns are the main members and it should be noted in the structure design that the stability of the columns has great effects on the safety of the whole structures. As for those tower structures with complex joins, if considering the confinement of other connecting members, the boundary condition of columns cannot be regarded as simple systems. The effective length factor of the columns wasn＇t defined in the design codes, so the methods in the present design codes couldn＇t be applied directly. In the paper, the typical structure member of Tai Cang Tower in Jiang su Prouince was selected and the linear and nonlinear bulking analysis had been carded out to study the stability of steel columns in the whole structure. In the research, the method on estimating the effective length factor of steel columns was proposed and the effective length factor of steel columns in Tai Cang Tower was reasonably given.

关 键 词：稳定性 塔柱 屈曲分析 计算长度系数 

分 类 号：TU391[建筑科学—结构工程]