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Aerodynamic interference effects between a triple-box girder and trains on aerodynamic forces and vortex-induced vibration

分离式三箱梁与列车间气动干扰效应对气动力系数及涡振性能的影响

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Abstract

Wind tunnel tests were carried out to investigate the aerodynamic interference between a triple-box girder and trains, involving static aerodynamic forces and vortex-induced vibrations (VIVs). Static and dynamic sectional models of the girder and trains were employed for aerodynamic force measurement and VIV test, respectively. Results indicate that the aerodynamic interference effect on static aerodynamic forces of both the girder and trains is remarkable. When a single train exists, the horizontal position of the train has a small effect on aerodynamic coefficients of the girder. When two trains meet on the girder, the drag coefficient of the girder is significantly reduced compared with that of without train or with a single train; besides, during the whole meeting process, aerodynamic forces of the leeward train first drop and then increase suddenly. The fluctuation of aerodynamic force could cause redundant vibration of the train, which is unfavorable for safety and comfort. A train on the girder could worsen the girder VIV performance: a new vertical VIV appears in the triple-box girder when a train is on the girder, and the torsional VIV amplitude increases significantly when the train is on the windward side.

摘要

为了研究列车与分离式三箱梁之间的气动干扰,进行了一系列风洞试验,重点研究了气动干扰对主梁和列车的三分力系数及主梁涡振性能的影响。采用列车和主梁的节段模型进行静力三分力测试和涡振试验。结果表明分离式三箱梁与列车之间存在显著的气动干扰效应。当单列车存在时,列车和主梁之间的相对水平位置对主梁的三分力系数影响不大。当双列车会车时,主梁的阻力系数较无列车和单列车时显著减小,且背风侧列车受到的气动力先突降后陡增,气动力的剧烈波动会引起列车的振动,对行车安全及舒适性不利。停靠在主梁上的列车对分离式三箱梁的涡振性能产生不利影响,会引起分离式三箱梁新的竖向涡振,且当列车位于迎风侧轨道上时,主梁扭转涡振振幅显著增加。

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Authors and Affiliations

  1. Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha, 410082, China

    Ling-bo Yang  (杨凌波), Xu-gang Hua  (华旭刚), Chao-qun Wang  (王超群) & Zheng-qing Chen  (陈政清)

  2. China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd., Wuhan, 430050, China

    Dong-sheng He  (何东升)

Authors
  1. Ling-bo Yang  (杨凌波)
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  2. Xu-gang Hua  (华旭刚)
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  3. Chao-qun Wang  (王超群)
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  4. Dong-sheng He  (何东升)
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  5. Zheng-qing Chen  (陈政清)
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Contributions

The overarching research goals were developed by HUA Xu-gang, WANG Chao-qun and CHEN Zheng-qing. YANG Ling-bo and WANG Chao-qun provided and analyzed the experimental data of wind tunnel test. HE Dong-sheng conducted the structure design of triple-box girder. The initial draft of the manuscript was written by YANG Ling-bo and WANG Chao-qun. All authors replied to reviewers’ comments and revised the final version.

Corresponding author

Correspondence to Chao-qun Wang  (王超群).

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Conflict of interest

YANG Ling-bo, HUA Xu-gang, WANG Chao-qun, HE Dong-sheng and CHEN Zheng-qing declare that they have no conflict of interest.

Foundation item: Project(52025082) supported by the National Natural Science Foundation for Distinguished Young Scholars of China; Project(CX20190288) supported by Hunan Provincial Innovation Foundation for Postgraduate, China

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Yang, Lb., Hua, Xg., Wang, Cq. et al. Aerodynamic interference effects between a triple-box girder and trains on aerodynamic forces and vortex-induced vibration. J. Cent. South Univ. 29, 2532–2541 (2022). https://doi.org/10.1007/s11771-022-5104-8

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  • DOI: https://doi.org/10.1007/s11771-022-5104-8

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