特高压输电钢管塔次应力研究  

Study on Secondary Stress of Extra High Voltage Transmission Steel Tube Tower

作　　者：崔磊[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院,广东广州510663

出　　处：《广东电力》2013年第1期50-52,88,共4页Guangdong Electric Power

摘　　要：针对我国《架空送电线路杆塔结构设计技术规定》未明确次应力作用下钢管桁架杆件强度的折减方式及设计方法,且缺乏试验研究,提出从节点次应力的杆件强度和杆件稳定两方面来进行特高压输电钢管截面强度的验算。通过理论和真型试验分析,得出考虑次应力的经验公式。真型试验结果表明,次应力经验公式应用于工程设计中是可行的。For reason of that there is no specified provision in （（Design Technology Provisions for Overhead Transmission Line Tower Structure）） for reduction way and design method for bar strength of trusses of steel tube and lack of testing research, this paper proposes to calculate section strength of extra high voltage transmission steel tube from two aspects of bar strength and stability of node secondary stress. By theoretical and true-type tests and analysis, it obtains empirical formula consider- ing of secondary stress. Test result shows that it is feasible to apply this secondary stress empirical formula in engineering de- sign.

关 键 词：特高压双回路 钢管塔 次应力 杆件强度 杆件稳定 工程建议 

分 类 号：TM753[电气工程—电力系统及自动化]