基于AR模型的输电塔结构风荷载模拟技术  

AR Model Method for Time-history Imitation of Pulse Wind Load on Transmission Tower

作　　者：祝贺[1] 

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《吉林电力》2006年第2期20-23,共4页Jilin Electric Power

摘　　要：鉴于近年来强风对输电铁塔的破坏情况,采用时间序列分析中的AR模型方法来求取铁塔上脉动风的随机过程,研究了脉动风速和脉动风压的概率统计方法,找出了适合输电铁塔的自回归模型的阶数。实现了考虑空间相关性影响的输电铁塔水平脉动风压时程模拟,计算快速准确。同时给出了工程应用实例,结果合理。According to the damage cases on transmission tower under strong wind, probability statistic expression of pulse wind velocity and pressure are investigated by the auto-regressive model （AR model）in time series analysis, the time history of pulse wind load acting on transmission tower structure and varying along with the space positions has been concisely . The suitable step number of auto regression models of certain transmission tower is found. A real project is treated as an example, the results indicate that analysis and treatment methods presented here are reasonable and feasible.

关 键 词：AR模型 铁塔 风荷载 时程模拟 

分 类 号：TM743[电气工程—电力系统及自动化]