钢管输电铁塔风致振动疲劳损伤机理及其防治措施研究现状与展望

作为电力输送的重要载体,钢管输电铁塔整体呈现出高柔的特点,极易受到风荷载影响。近年来,钢管塔在风荷载作用下产生风致振动以及疲劳损伤的事故频发,进而引起铁塔结构强度下降甚至破坏,以引起国内外学者的关注。该文系统阐述钢管铁塔的风致振动和疲劳损伤性能及防治措施的国内外研究现状,总结当前研究和工程实践存在的不足以及未来可能的研究方向,可为钢管铁塔在风荷载作用下的结构设计和长期安全运行提供参考。

As an important carrier of power transmission,steel pipe transmission tower as a whole shows the characteristics of high and flexible,which is easily affected by wind load.In recent years,the accidents of wind-induced vibration and fatigue damage of steel pipe tower under wind load occur frequently,which leads to the decrease of structural strength and even damage of steel tower,thereby attracts the attention of scholars at home and abroad.This paper systematically expounds the research status of wind-induced vibration and fatigue damage performance and prevention measures of steel pipe tower at home and abroad,and summarizes the shortcomings of current research and engineering practice and possible research direction in the future,which can provide reference for structural design and long-term safe operation of steel tube tower under wind load.