不同风向角动风下大跨越输电塔风振响应分析  

Analysis of Wind-induced Vibration for Big-span Electrical Transmission Tower Under Different Wind Directions

作　　者：李黎[1] 尹鹏[2] 王开明[3] 梁峰[3] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]中国电力工程顾问集团公司,北京100120 [3]中国电力工程顾问集团中南电力设计院,武汉430071

出　　处：《武汉理工大学学报》2009年第23期68-71,76,共5页Journal of Wuhan University of Technology

基　　金：国家电网公司科技项目([2007]413)

摘　　要：针对大跨越输电塔在不同风向角的动风作用下的动力响应,提出了一种橡胶铅芯阻尼器用于风振控制,并研究了大跨越输电塔的最不利风向角,及其横线向和顺线向的振动情况。研究表明,加设橡胶铅芯阻尼器后大跨越输电塔-线体系的位移、内力响应均有较大幅度的降低;同时位移响应与内力响应的最不利风向角不一定相同;各风向角动风作用下均会引起塔-线体系的横线向振动和顺线向振动。研究成果为将来类似的工程应用提供了参考。The lead-rubber damper （LRD） is developed to control the wind-induced vibration of big-span electrical transmission tower under different wind directions. The most disadvantageous wind direction, transverse and longitudinal vibration of the tower are researched. According to the research on the displacement and internal force of the main material under five wind directions, the effects of wind-induced vibration controlling are obtained. The most disadvantageous wind direction of the displacement and inner force are not always identical, so the different input wind direction in engineering design should be considered. Dynamic wind in different directions will lead to both transverse and longitudinal vibration of the tower. The results deserve to be popularised in the future.

关 键 词：大跨越输电塔 橡胶铅芯阻尼器 风向角 风振控制 

分 类 号：TU352[建筑科学—结构工程]