摘要
本文通过模型风洞试验和对江阴大跨越输电塔线体系风振控制设计计算,研究了大跨越输电塔线体系动力特性和风振控制。通过悬挂水箱、粘弹性阻尼摆和悬挂水箱加粘弹性阻尼摆组合控制三种制振方案的气弹模型风洞试验研究,验证了设置振动控制装置可有效地减小大跨越输电塔的风振响应,为江阴大跨越工程风振控制设计及应用提供了依据。最后,对正在建设中高346.5m的江阴大跨越输电塔线体系进行风振控制设计,提出用调频质量阻尼器(TMD)和粘弹性阻尼器(VED)的控制方案,理论计算表明具有较好控制效果。
The dynamic behavior, wind induced vibration response and vibration control of long span transmission line system were investigated through wind tunnel experiment and vibration control design of 500kV long span transmission line system, which is now under construction in Jiangyin, China. The aeroelastic wind tunnel test on model of transmission line system adopts three means of vibration control, which are the suspended water tank pendulum, the viscoelastic damping pendulum and combination of the both. It has been proved that the installation of vibration control device can efficiently diminish wind induced response of transmission towers. Two control methods, tuned mass damper (TMD) and viscoelastic damper (VED), are presented, and theoretical calculation indicates that the effects of these methods are quite satisfactory.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2003年第4期60-64,75,共6页
Journal of Building Structures
基金
国家自然科学基金资助项目(50078040)。
关键词
输电塔
风振控制
气弹模型
风洞试验
风荷载
风振响应
long span transmission line system
wind induced vibration control
model wind tunnel experiment
