1000kV输电塔横风向振动风洞试验研究  

Wind Tunnel Test on Across-Wind Vibration of 1 000 kV UHV Transmission Tower

作　　者：谢强[1] 管政[2] 严承涌 

机构地区：[1]土木工程防灾国家重点实验室(同济大学),上海市杨浦区200092 [2]同济大学土木工程学院,上海市杨浦区200092 [3]中国海诚工程科技股份有限公司,上海市徐汇区200031

出　　处：《电网技术》2011年第5期21-26,共6页Power System Technology

基　　金：国家自然科学基金项目(50508026;50778135);国家电网公司科技项目(SGKJJSKF[2008-536]);教育部霍英东教育基金会优选资助课题(114021)~~

摘　　要：为研究特高压输电塔架和输电塔–线耦联体系的横风向风振响应特点,以某1 000 kV输电线路为工程背景,通过气弹模型风洞试验,分析了单塔和塔–线体系在紊流风场中的横风向风振响应。试验结果表明:在紊流风场中,输电塔的横风向响应和顺风向响应处于同一数量级;塔–线体系中输电塔的横风向加速度响应大于单塔,横担端部的横风向位移响应大于单塔,而塔身处的横风向位移响应却小于单塔。高阶振型对单塔横风向加速度和位移响应的影响不能忽略,而位移响应还包含了一定程度的背景响应。在进行特高压输电塔的抗风设计中,应考虑横风向风振响应的影响。To research across-wind-induced vibration response of ultra high voltage （UHV） transmission tower and that of tower-line coupling system, taking a certain 1 000 kV transmission line as research object, through wind tunnel test of aeroelastic model the across-wind-induced vibration responses of both single tower and tower-line coupling system under turbulent flow are researched. Test results show that in turbulent wind field the across-wind-induced vibration response and the along-wind-induced vibration response of single transmission tower are in the same order of magnitude. In tower-line coupling system, the across-wind acceleration response of the tower is larger than that of the single tower; the across-wind displacement response at the end of the crossbeam is larger than that of the single tower and the across-wind displacement response at the tower body is smaller that that of the single tower. The influence of high order vibration modes on the acceleration and displacement responses cannot be neglected, and there is a certain extent of background response involved in displacement response. Thus in the wind force proofing design of UHV transmission tower the influence of across-wind response should be taken into account.

关 键 词：1000KV输电线路 风洞试验 单塔 塔一线体系 横风向响应 气弹模型 

分 类 号：TM753[电气工程—电力系统及自动化]