重庆大学学报2018，Vol.41Issue(1)：42-50,9.DOI:10.11835/j.issn.1000-582X.2018.01.005
架空输电线路大跨越导线微风振动试验
Experiments on aeolian vibration of large span overhead transmission lines
摘要
Abstract
An aeolian vibration model of transmission lines is designed and manufactured to grasp the vibration characteristics of large span overhead transmission lines.The vibration responses of a bare conductor and a conductor with a stockbridge damper are researched under different tension.The energy dissipation effect of the stockbridge damper and its installation position are analyzed and the results are compared with those of theoretical analysis.Then a calculating formula of damper installation position is proposed.The results show that the operation tension has a great impact on the aeolian vibration of large span conductors,and the controlling effect of the conductors' damping on aeolian vibration is very limited.The vibration amplitude of the conductor with a stock bridge damper is smaller than that of the bare conductor.However,with the increase of tension,the anti-vibration band of the damper gets narrowed and its anti-vibration effect reduces.The installation position of the damper has a great influence on the vibration of the conductor,and the vibration wave length at each excitation frequency should be considered when we determine the damper's installation position.The best anti-vibration band of FR-4 type stock bridge damper is from 15 to 25 Hz.For high frequency and low frequency vibration,its controlling effect is limited.关键词
大跨越导线/微风振动/运行张力/防振锤/安装方式Key words
large span conductor/aeolian vibration/operating tension/anti-vibration damper/installation method分类
信息技术与安全科学引用本文复制引用
汪峰,王宇,周蕊,陈池..架空输电线路大跨越导线微风振动试验[J].重庆大学学报,2018,41(1):42-50,9.基金项目
国家自然科学基金资助项目(51278282) （51278282）
道路桥梁与结构工程湖北省重点实验室(武汉理工大学)开放课题基金资助项目(DQJJ201507).Supported by National Natural Science Foundation of China(51278282),Hubei Key Laboratory of Roadway Bridge and Structure Engineering(Wuhan University of Technology)(DQJJ201507). （武汉理工大学）
