500kV四回路输电塔气弹模型风洞试验研究  

Study on Wind Tunnel Test for Aeroelastic Model of 500 kV Four Circuit Transmission Tower

作　　者：何运祥[1] 李庆祥[2] 金晓华[1] 

机构地区：[1]中国能源建设集团广东省电力设计研究院,广东广州510663 [2]广东省建筑科学研究院,广东广州510500

出　　处：《广东电力》2013年第1期59-64,共6页Guangdong Electric Power

摘　　要：针对标高82.7 m的500 kV四回路常规直线塔风荷载设计是关键的问题,提出采用离散刚度法制作输电塔气动弹性模型,为此,对不同风速下的风洞试验及其直线塔风致响应特性进行了试验和研究。研究结果表明:输电塔的加速度响应和动位移响应随风速、高度增大呈单调增大趋势;横风向加速度响应和顺风向加速度响应比较接近,可见输电塔在风荷载作用下,横向风振效应不能忽略,这对复核设计风荷载取值非常重要。Aiming at problem that wind load design is a key point for 500 kV four circuit conventional tangent tower of 82. 7 m elevation, this paper proposes to adopt discrete stiffness method to make aeroelastic model for transmission tower. There- fore, it carry out test and research for wind tunnel test and wind-induced vibration response of tangent tower under different wind speeds. The result shows that accelerated speed and dynamic displacement of transmission tower presents increase tend- ency with increase of wind speed and height while the accelerated speed responses of across wind and down wind are similar. Thus it can be seen that under the force of wind load, the horizontal wind vibration effect can not be ignored which is very important to re-check designed wind load value.

关 键 词：常规直线塔 塔线耦合体系 气弹模型 风洞试验 风振响应 

分 类 号：TM751[电气工程—电力系统及自动化]