摘要
基于1 000 k V特高压交流输变电工程线路中的大跨越输电塔-线体系,开展大跨越输电塔-线耦联体系的气弹模型风洞试验,研究不同风向角和不同风速下体系气弹模型在紊流场中的风振响应,并与输电单塔的风振响应进行对比。试验结果表明:在紊流风场中,塔线的相互耦合作用导致大跨越输电塔-线体系具有较强的非线性。在0°~30°风向角下,输电线的存在增大了体系的阻尼,降低了体系的风振响应;在45°~90°风向角下,位于输电塔线体系两端的输电塔G2和G4的风振响应更容易受到塔-线耦合作用的影响,在大跨越输电塔-线体系抗风设计中应受到重视。
Based on the 1 000 kV ultra-high voltage electric power transmission project, the wind-induced vibration response of long-span transmission tower-line system under different wind direction and wind speeds was studied and compared with that of single transmission tower. The results showed that the transmission tower-line system was of strong nonlinear characteristic because of the coupling effect between transmission towers and lines. The existence of transmission line resulted in the damping of transmission tower-line system increased and the wind-induced vibration response of the system reduced with the wind angle from 0° to 30°. The wind-induced vibration responses of transmission towers （ G2, G4） were more easily affected by the coupled vibration of the tower-line system with the wind angle from 45° to 90°. The phenomenon should not be neglected in the further design of long-span transmission tower-line system.
出处
《工业建筑》
CSCD
北大核心
2017年第5期79-84,95,共7页
Industrial Construction
基金
高等学校博士学科点专项科研基金(20120131120036)
山东省自然科学基金项目(ZR2012EEQ005)
山东省博士后创新项目专项资金资助项目(201203064)
关键词
大跨越输电塔-线耦联体系
风洞试验
风振响应
气弹模型
long-span transmission tower-line system
wind tunnel test
wind-induced vibration response
aeroelastic model
