长波天线大跨越导线的防微风振动设计

长波天线一般架设于陆地平原或山谷中,多采用大跨越导线等作为辐射体,在水下通信中扮演着重要角色。由微风荷载引起的导线长时间、高频小幅振动,会使导线发生疲劳破坏,从而引发断股、断线、金具连接破裂、失效等事故,具有巨大的破坏性。目前,对于长波天线的微风振动研究还未见到相关报道。文中从微风振动的起因入手,对影响长波天线导线振动的因素进行了分析,并结合实际工程对某长波天线大跨越导线进行了防振设计,所采用的多方式联合防振方法,经实测效果良好,相关经验可为后续的长波台的防振设计提供一定参考。

Design of Anti-breeze Vibration for Long-wave Antenna with Large Span Conductor

The long-wave antenna is typically installed in land plains or valleys and the large span conductor is used as its radiator, which plays an important role in underwater communication. The wind load excitation with great destruction will cause vibration of the conductor, and then lead to fatigue damage, which will lead to broken strands, broken wires, metal joints rupture and failure. Study on the breeze vibration of long-wave antenna has not yet been reported. Starting with the cause of breeze vibration, in this paper the factors affecting the vibration of long-wave antenna wire are analyzed, and the anti-vibration design are carried out for a long-wave antenna with large span conductor combined with a practical project. The multi-mode combined anti-vibration method adopted in this paper is proved to be effective and the relevant experience can be used for the anti-vibration of the following long-wave antenna wire.