塔架水平辅助杆的受力分析和设计  

Force Analysis and Design Research of Horizontal Auxiliary-rod for Tower

作　　者：李梅[1] 李艳辉[2] 靳小俊[1] 刘亚玲[1] 

机构地区：[1]中北大学理学院土木工程,太原030051 [2]中北大学理学院基础力学实验教学中心,太原030051

出　　处：《机械设计与研究》2013年第3期134-138,共5页Machine Design And Research

基　　金：中北大学大学生创新创业训练计划资助项目(1307321004)

摘　　要：通过利用大型非线性有限元软件ANSYS对具有不同主杆初始弯曲状态、初始弯曲挠度和长细比的39种塔架进行数值模拟和分析,得出:塔架主杆初始弯曲状态对辅助杆受力影响较大;各水平辅助杆支撑力随主杆最大初始弯曲挠度的增大呈增大趋势,且各水平辅助杆支撑力大小不等;当主杆长细比λ32.667时,水平辅助杆的最大支撑力基本保持不变,但各水平辅助杆支撑力的总和随主杆长细比λ的增大呈减小趋势;当主杆长细比λ32.667时,按欧盟钢结构设计规范计算水平辅助杆支撑力较合适。Based on nonlinear FEA software ANSYS, numerical simulation of thirty-niney types of tower models that have different initial bend state, bend deflection and slenderness ratio of main-rod were established. Analysis results indicate that the initial bend state of main-rod has great influence on force of horizontal auxiliary-rod. With increasing initial bend deflection of main-rod, the supporting force of each horizontal auxiliary-rod has an increasing trend and the force magnitude is unequal. When slenderness ratio of main-rod is less than or equal to 32. 667, maxi- mum force of horizontal auxiliary-rod approximately remain constant, but with increasing slenderness ratio of main-rod, the total of each horizontal auxiliary-rod force presents a reducible trend. When slenderness ratio of main-rod is less than or equal to 32. 667, it is more suitable to calculate the force of horizontal auxiliary-rod according to the EU steel structure design code.

关 键 词：塔架 辅助杆 初始弯曲 长细比 支撑力 

分 类 号：TU279.7[建筑科学—建筑设计及理论]