台风“海鸥”的风场实测与输电塔风振响应分析  

The Wind Field Measurement in the Typhoon “Seagull” and the Wind-induced Dynamic Responses of the Transmission Tower

作　　者：崔磊[1] 何运祥[1] 汪大海[2] 

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510600 [2]武汉理工大学土木工程与建筑学院,湖北武汉430070

出　　处：《防灾减灾工程学报》2016年第6期965-971,983,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51478373)资助

摘　　要：为研究强风作用下输电塔风振动力响应的规律,选择代表性地貌下的典型输电塔进行监测,得到了台风"海鸥"经过时,多点边界层风特性的实测结果以及风致输电塔振动的真实动力响应。基于风速数据,着重分析了空间风场特性的各项参数,包括平均风速和风向、风剖面参数、湍流强度、阵风因子、湍流积分尺度和脉动风谱。采集了输电塔横担和塔头塔身连接处振动加速度响应。分析了杆件薄弱部位的风振动应变响应,对杆塔在台风作用下的安全性进行了评估。为输电塔抗台风设计改进提供重要的实测数据支持。The wind field and the dynamic responses of a typical transmission tower line system under the typhoon＂Seagull＂were measured by the anemometer,strain gauges and the accelerometers in September,2014.Based on the measurement data,the characteristics of the random spatial wind field of the typhoon was analyzed,including the mean wind profiles,the wind direction,turbulent density,turbulent scale,power spectrum density of fluctuation,as well as the gust response factor of the dynamic strain responds on column of the tower.Then,the wind resistance reliability of the tower was estimated.The data and the analysis can be the references for the wind resistant design of the transmission tower lines system.

关 键 词：输电塔 台风 实测 风振响应 

分 类 号：TU435[建筑科学—岩土工程]