摘要
针对大跨越输电塔在风荷载作用下振动响应显著时有倒塔事故发生,以海门电厂至汕头500 kV输出线路大跨越干字型输电塔工程为例,提出了新型双套管防屈曲耗能支撑(BRB)在输电塔线体系中的应用,并数值模拟了空间相关的风速场。实例结果表明,防屈曲耗能支撑的风振控制效果显著,并可优选最佳方案。
Under the action of wind load,vibration of transmission tower system is significantly and this causes many inverted tower accident.Base on the Haimen-Shantou 500kV long span power transmission tower line project,a new buckling restrained brace(BRB) is proposed to apply for transmission tower line system.The space related wind velocity field is also simulated by numerical method.The results show that the effect of wind induced vibration control with BRB is good and the optimization scheme is determined.
出处
《水电能源科学》
北大核心
2010年第6期121-124,149,共5页
Water Resources and Power
基金
国家电网公司科技基金资助项目(SGKJ[2007]413)
国家自然科学基金资助项目(50878093)
关键词
大跨越
输电塔
双套管
防屈曲耗能支撑
风振控制
塔线体系
large span
transmission tower
double casing pipes
buckling restrained brace
wind induced vibration control
tower line system
