基于弹性屈曲理论的正多边形钢塔架计算长度的研究  

Research for the Effective Length of Regular Polygon Steel Tower Based on Elastic Bulking Theroy

作　　者：邱晖[1] 付举宏 马思明[1] 梁俊[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》2015年第4期13-17,共5页Special Structures

摘　　要：确定计算长度是钢塔架设计中的一个重要环节,到目前为止,我国规范还无法涵盖所有的情况。本文通过对不同位移边界条件、不同荷载边界条件、不同边数、不同层数、不同腹杆约束情况、不同腹杆类型的模型分别进行弹性屈曲分析,找出这些因素对计算长度的影响,并给出一个合理的确定钢塔架计算长度的方法。Determination of the effective length is a key link in steel tower design.Until now,the whole situations couldn ＇t be contained in the national regulation in our country.In this paper,in order to identify of the influence of different factors on the effective length of the steel tower,the elastic buckling analysis was done separately through different types of model which considers different displacement or load boundary conditions,different polygon number,different floor,different truss brace constraints and different types of brace.Then a reasonable method to determine the effective length was proposed.

关 键 词：钢塔架 弹性屈曲 计算长度 

分 类 号：TU391[建筑科学—结构工程]