Experimental Study on Vortex-Induced Vibration Performance and Countermeasures for Side Girder Beam with Conveyer

被引：0
|
作者：
Li C. [1 ]
Mao Y. [1 ]
Yan H. [1 ]
Liang A. [1 ]
Han Y. [1 ]
机构：
[1] School of Civil Engineering, Changsha University of Science & Technology, Changsha
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2022年 / 57卷 / 04期
关键词：
countermeasure; side girder beam; vortex-induced vibration performance; wind tunnel test;
D O I：
10.3969/j.issn.0258-2724.20210224
中图分类号：
学科分类号：
摘要：
Conveyers on the bridge deck change the aerodynamic shape of the side girder. In order to explore the vortex-induced vibration performance and countermeasures of the side girder with a conveyer, a 1.00∶20.00 rigid segment model test of free suspension is carried out in wind tunnel. Firstly, the vortex-induced vibration performance of the side girder beam section with a conveyer is studied, and tests are conducted as to how it is affected by structural damping ratio. Secondly, the cases of whether a conveyer is equipped are compared. Finally, aerodynamic measures such as air nozzles, stabilizing plates at beam bottom, and horizontal baffles are used to optimize the vortex-induced vibration performance of the main girder section. The results show that the vortex-induced vibration performance of the side girder with a conveyer is poor at the specified 0° and ± 3° wind attack angles, and the maximum exceeds the specification limit value by 286%. The deck conveyer reduces the vortex-induced vibration stability of the main girder, and the peak value of the vortex-induced vibration response increases by 44%. The installation of stabilizing plates at beam bottom is beneficial to improve the vortex-induced vibration performance of the main beam, and the effect of stabilizing plates with the same height as the bottom of the beam becomes better with the increase in the number of stabilizing plates. The vortex-induced vibration suppression effect of the main beam is 93% when installing three stabilizing plates with a depth of 1.5 m. The 2.0 m high middle stabilizing plate extending 0.5 m from beam bottom can completely suppress the vortex-induced vibration. The nozzle has a little influence on the vortex-induced vibration performance of the main beam, but it has an optimal angle value in a certain range. When a horizontal baffle is separately arranged at the beam bottom, the peak value of vortex-induced vibration response is reduced by 17%. A combined measure of a nozzle, nozzle horizontal splitter plate, and horizontal baffle of 1 m width is adopted to optimize the main beam section, and the peak value of the vortex-induced vibration response of the main beam is reduced by 92%, which is far lower than the specification limit. © 2022 Authors. All rights reserved.
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页码：886 / 893
页数：7
相关论文
共 16 条
  • [1] (2019)
  • [2] GUAN Qinghai, LI Jiawu, HU Zhaotong, Et al., Effects of railings on vortex-induced vibration of a bridge deck section, Journal of Vibration and Shock, 33, 3, pp. 150-156, (2014)
  • [3] LIU Jun, LIAO Haili, WAN Jiawei, Et al., Effect of guide vane beside maintenance rail on vortex-induced vibration of streamlined box girder, Journal of Southwest Jiaotong University, 50, 5, pp. 789-795, (2015)
  • [4] ZHANG Tianyi, SUN Yanguo, LI Mingshui, Et al., Experimental study on vortex-induced vibration performance and aerodynamic countermeasures for a wide-width double-box composite beam, China Journal of Highway and Transport, 32, 10, pp. 107-114, (2019)
  • [5] LONG Junxian, ZHOU Xuhui, LI Qianming, Et al., Experimental study on vortex-induced vibration performance and aerodynamic countermeasures for a double-box composite beam cable stayed bridge with high protective structure, Journal of Railway Science and Engineering, 18, 1, pp. 119-127, (2021)
  • [6] LI Huan, HE Xuhui, WANG Hanfeng, Et al., Wind tunnel tests for vortex-induced vibration control measures of a super high cable-stayed bridge with πcross section, Journal of Vibration and Shock, 37, 7, pp. 62-68, (2018)
  • [7] LI Chunguang, HUANG Jingwen, ZHANG Ji, Et al., Aerodynamic optimization measures for VIV performances of a side girder composite beam based on wind tunnel tests, Journal of Vibration and Shock, 37, 17, pp. 86-92, (2018)
  • [8] ZHANG Zhitian, QING Qianzhi, XIAO Wei, Et al., Vortex-induced vibration and control method for a cable-stayed bridge with open cross section, Journal of Hunan University (Natural Sciences), 38, 7, pp. 1-5, (2011)
  • [9] IRWIN P A., Bluff body aerodynamics in wind engineering, Journal of Wind Engineering and Industrial Aerodynamics, 96, 6, pp. 701-712, (2008)
  • [10] KUBO Y, SADASHIMA K, YAMAGUCHI E, Et al., Improvement of aeroelastic instability of shallow π section, Journal of Wind Engineering and Industrial Aerodynamics, 89, 14, pp. 1445-1457, (2001)
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