输电塔圆钢管的涡激振动气动控制研究  

Study on aerodynamic control of vortex induced vibration of round steel tube in transmission tower

作　　者：陶亚光 张博 武鹏飞[2] 杨文瀚[2] 谢凯 陈文礼[2] 刘光辉 TAO Yaguang;ZHANG Bo;WU Pengfei;YANG Wenhan;XIE Kai;CHEN Wenli;LIU Guanghui(Henan Key Laboratory of Power Transmission Line Galloping Prevention and Control Technology,State Grid Henan Electric Power Research Institute,Zhengzhou 450052,China;Key Laboratory of Civil Engineering,Intelligent Disaster Prevention and Mitigation,Ministry of Industry and Information Technology,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]河南省电力线路舞动防治技术重点实验室,国网河南省电力公司电力科学研究院,河南郑州450052 [2]哈尔滨工业大学土木工程智能防灾减灾工业与信息化部重点实验室,黑龙江哈尔滨150090

出　　处：《自然灾害学报》2024年第2期187-196,共10页Journal of Natural Disasters

基　　金：国网河南省电力公司科技项目(52170222000M)。

摘　　要：作为一种力学性能卓越的输电塔类型,钢管塔在工程中应用广泛。然而,当钢管塔材长细比较大且趋于水平布置时,钢管杆在风速较小时容易发生涡激振动。在长期运行过程中,这种持续反复的振动可能造成钢管塔构件的疲劳破坏,塔体结构一旦发生破坏,将直接威胁到电网的稳定运行。针对该问题开展研究,采用大尺寸真型钢管杆件,通过风洞试验分别研究了螺旋形扰流线和被动吹气套环2种涡激振动气动控制措施。分析不同螺旋线数量、螺距和不同孔厚、孔型对涡振控制效果的影响规律。研究结果表明:单螺旋线控制效果一般,三螺旋线最多可以削减97.7%的涡振,套环控制最多可以削减75.5%的涡振。文中使用足尺模型以满足雷诺数需求,实现更接近输电塔钢管真实环境的研究,为实际工程中钢管涡激振动抑制提供参考和借鉴。As a type of transmission tower with excellent mechanical properties,steel tubular tower is widely used in engineering.However,when the length of steel tubular tower is relatively large and tends to be arranged horizontally,the steel tubular rod is prone to vortex-induced vibration at low wind speed.In the long run,the continuous and repeated vibration may cause fatigue damage to the steel tubular tower members.Once the tower structure is damaged,it will directly threaten the stable operation of the power grid.In order to solve this problem,two vortic-induced vibration pneumatic control measures of spiral turbulence and passive blowing sleeve are studied by using large size true steel pipe and rod through wind tunnel test.The influence law of different spiral number and pitch on vortex vibration control effect is analyzed.The influence of different orifice thickness and orifice shape on vortex vibration control is analyzed.The results show that the effect of single-helix control is not so good.The three-helix control can reduce the vortex vibration by 97.7%at most,and the hollow-loop control can reduce the vortex vibration by 75.5%at most.In this paper,a full-size model is used to meet the Reynolds number demand and realize the study closer to the real environment of steel pipe in transmission tower,providing reference for the vorticity vibration suppression of steel pipe in practical engineering.

关 键 词：输电塔 钢管 涡激振动 风洞试验 螺旋线 被动吹气套环 

分 类 号：TU279.744[建筑科学—建筑设计及理论]