【摘要】 架空输电线路在特定的风雨耦合条件下会诱发风雨激振问题。风雨激振使得高压输电线-塔体系更易于发生动力失稳乃至断线倒塔,制约着架空输电线路的安全稳定运行。为此,针对架空导线风雨激振问题,详细叙述风雨激振的严重危害,介绍包括现场观测、风洞试验、理论分析、数值流体计算等相关研究方法。分析风雨激振的诱发机制、关键影响因素、现有的振动抑制措施以及新形势下亟需解决的问题,为该问题的进一步研究提供思路。更多还原

【Abstract】 Rain- wind induced vibration occurs very often for overhead transmission lines. This kind of vibration can lead to the aerodynamic instability of transmission tower-line system and even break the tower, also restricts the security and stability of operation of the overhead transmission lines. In this paper, the serious harm of the rain- wind induced vibration was elaborated. The methods for field observation, wind tunnel test, the theoretical analysis and numerical computation of fluid dynamics for the transmission lines were introduced. The mechanism and key influencing factors of rain-wind induced vibration were analyzed. Recent results in the research of anti- vibration measures were reviewed. Moreover, some hot problems which need to be further studied were proposed.更多还原