摘要
输电线工程中110kV混压六回路窄基角钢塔是一种新型塔。本文通过合理的力学简化建立窄基角钢塔结构的力学分析模型,采用有限元法对新型窄基角钢塔结构进行了振型、次应力及重力二阶效应等方面的综合分析。并将计算分析结果与常规铁塔设计规范中相关要求进行了对比,对新型窄基角钢塔的结构力学特性进行了评估和分析。本文分析方法和结果可以为新型窄基角钢塔设计提供参考。
The mixed-voltage narrow base angle steel tower with six circuits is a new type of tower in transmission line engineering.In this paper,the mechanical analysis model of the narrow base angle steel tower is proposed by means of reasonable mechanical simplification.The finite element method is used to analyze the vibration mode,secondary stresses and gravity second order effect of the new narrow base angle steel tower.The present calculated results are compared with ones of the relevant requirements in the design specification of the conventional angle steel towers.Then the structure characteristics of the new narrow base angle steel tower are evaluated based on the computed results.The present results can provide some references for the designs of the new narrow base angle steel towers.
作者
罗正帮
梁东跃
沈李
张壮
李静坤
Luo Zhengbang;Liang Dongyue;Shen Li;Zhang Zhuang;Li Jingkun(Anhui Huadian Engineering Consultation&Design Co.,Ltd.,Hefei 230022,China;School of Civil Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《建筑结构》
CSCD
北大核心
2019年第S02期683-688,共6页
Building Structure
基金
国家自然科学资金项目(No.11772114).
关键词
窄基角钢塔
振型
力学分析
次应力
二阶效应
有限元法
narrow base angle steel tower
vibration mode
mechanical analysis
secondary stress
second order effect
finite element method
