特高压双柱悬索拉线塔塔线体系风洞试验研究  

Wind tunnel test on ultra-high voltage cross-rope suspension tower-line

作　　者：李正良[1] 邹鑫[1] 施菁华[2] 晏致涛[1] 俞登科[1] 肖正直[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]华北电力设计院工程有限公司,北京100120

出　　处：《振动与冲击》2015年第20期46-50,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51308568)

摘　　要：针对双柱悬索拉线塔线体系与自立式特高压输电塔线体系风振特性显著不同,为研究双柱悬索拉线塔塔线体系风振响应随风向角及风速变化,进行单塔、塔线体系气弹性模型风洞试验。结果表明,塔线体系风振响应随风向角变化规律基本与单塔试验相同,但变化幅度明显高于单塔。0°、45°、60°风向角为工程设计不利工况。The wind-induced responses of a cross-rope suspension tower-line are dramatically different from those of the self-supported UHV transmission tower-line. Aero-elastic wind tunnel tests were used to investigate the wind-induced responses of the cross-rope suspension tower-line,changing with the wind direction angle and the test velocity. Tests on both a single tower model and a tower-line coupling system model were carried out. The results indicate that the dynamic responses of both the models vary in a same way as the wind angle changes,but the vibration amplitude of the tower-line coupling system model is apparently bigger than that of the single tower model. 0°,45°and 60° should be considered as the extreme conditions in the design process.

关 键 词：双柱悬索拉线塔线体系 单塔模型 气弹性模型 风向角 风振响应 风洞试验 

分 类 号：TM723[电气工程—电力系统及自动化] TU317.1[建筑科学—结构工程]