摘要
针对大跨桥梁涡激振动问题,采用CFD方法模拟非流动控制下的主梁流场特征,分析了涡激振动最优扰动位置,提出了内置呼吸方式流动控制方法,通过进行风洞试验验证内置呼吸方式在不同扰动位置对桥梁涡激振动响应的控制效果,得到不同控制位置对桥梁模型涡激振动响应的控制规律.结果表明,扰动位置为前后缘对称布置时对涡激振动的控制效率是最高的,该方法为提高大跨桥梁涡激振动稳定性提供了参考.
Aiming at the problem of vortex induced vibration(VIV)of long span bridges,a CFD method was used to simulate the flow characteristics of main girder under non-flow control,the optimal disturbance position of VIV was analyzed,and an internal breath-configuration flow control method was proposed.Wind tunnel tests were carried out to verify the control effect of breath-configuration method on the VIV response of the bridge at different disturbance locations,and the control law of VIV response of the bridge model at different control locations was obtained.The results show that the control efficiency of VIV is the highest when the disturbance locations are symmetrically arranged at the leading and the trailing edges,and the as-proposed method provides a reference for improving the stability of VIV for long span bridges.
作者
薛志成
韩斌
XUE Zhi-cheng;HAN Bin(School of Architectural Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China;Architecture and Civil Engineering Institute,Guangdong University of Petroleum and Chemical Engineering,Maoming 525000,China)
出处
《沈阳工业大学学报》
CAS
北大核心
2022年第6期700-705,共6页
Journal of Shenyang University of Technology
基金
国家自然科学基金项目(51478168,51878108)
广东省普通高校特色创新项目(2019KTSCX102)
广东石油化工学院自然科学研究项目(519192).
关键词
大跨桥梁
涡激振动
流动控制
内置呼吸方式
数值模拟
风洞试验
三位展向扰动
尾流分析
long span bridge
vortex induced vibration
flow control
internal breath-configuration method
numerical simulation
wind tunnel test
three-dimensional spanwise disturbance
wake analysis
