输电塔风振系数实用计算方法  

Practical Calculation Method of Wind Vibration Coefficient of Transmission Tower

作　　者：黄枭雄 

机构地区：[1]重庆科技学院,建筑工程学院,重庆

出　　处：《输配电工程与技术》2022年第2期7-15,共9页Transmission and Distribution Engineering and Technology

摘　　要：在输电塔的设计中风振系数 是关键参数。本文基于惯性力法,提出了考虑横担和法兰盘影响的输电塔风振系数计算方法。该方法考虑了局部形状、质量和挡风面积的影响,研究了 的修正系数表达式。基于3个悬臂输电塔样本的分析结果,推导了风振系数公式。分析结果表明,横担对输电塔的风振响应有很大影响,但法兰盘对其影响很小。因此,作为近似计算,法兰盘对风振系数的影响可以忽略不计。本文的研究结果为输电塔风振系数提供了一种实用计算方法,该方法与现有规范相比有计算结果更准确的优势;与有限元计算分析相比,具有计算过程更简洁的优势。The vibration coefficient is the key parameter in the design of the transmission tower. Based on the inertial force method, this paper proposes a calculation method of wind vibration coefficient of transmission tower considering the influence of cross arm and flange plate. This method takes into account the influence of local shape, mass and windshield area, and studies the expression of the correction coefficient of . Based on the analysis results of three cantilever transmission tower samples, the wind vibration coefficient formula is derived. The analysis results show that the cross arm has great influence on the wind-induced vibration response of transmission tower, but the flange plate has little influence on it. Therefore, as an approximate calculation, the influence of flange on wind vibration coefficient can be ignored. The research results of this paper provide a practical calculation method for the wind vibration coefficient of transmission tower, which has the advantage of more accurate calculation results compared with the existing specifications;compared with finite element analysis, it has the advantage of simpler calculation process.

关 键 词：输电塔 风振系数 实用计算方法 横担 法兰盘 近似计算 风振响应 修正系数 

分 类 号：TM7[电气工程—电力系统及自动化]