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Aerodynamic impact of train-induced wind on a moving motor-van

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Abstract

The newly-built single-level rail-cum-road bridge brings the issue of the aerodynamic impact of train-induced wind on road automobiles. This research introduced a validated computational fluid dynamics (CFD) model regarding this concern. Such an aerodynamic impact mechanism was explored; a relationship between the transverse distance between train and motor-van (hereinfafter referred to as van) and the aerodynamic effects on the van was explored to help the optimization of bridge decks, and the relationship between the automobile speed and aerodynamic variations of a van was fitted to help traffic control. The fitting results are accurate enough for further research. It is noted that the relative speed of the two automobiles is not the only factor that influences the aerodynamic variations of the van, even at a confirmed relative velocity, the aerodynamic variations of the van vary a lot as the velocity proportion changes, and the most unfavorable case shows an increase of over 40% on the aerodynamic variations compared to the standard case. The decay of the aerodynamic effects shows that not all the velocity terms would enhance the aerodynamic variations; the coupled velocity term constrains the variation amplitude of moments and decreases the total amplitude by 20%–40%.

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Acknowledgements

The writers are grateful for the financial support from the National Natural Science Foundation of China (Grant Nos. 51778544, 51978589) and the Fundamental Research Funds for the Central Universities (No. 2682021CG014).

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Authors and Affiliations

  1. Southwest Municipal Engineering Design and Research Institute of China, Chengdu, 610299, China

    Jiajun He

  2. Department of Bridge Engineering, Southwest Jiaotong University, Chengdu, 610031, China

    Jiajun He, Huoyue Xiang & Yongle Li

  3. Wind Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, 610031, China

    Huoyue Xiang & Yongle Li

  4. Sichuan Railway Investment Group Co., Ltd., Chengdu, 610093, China

    Bin Han

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  1. Jiajun He
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  2. Huoyue Xiang
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  3. Yongle Li
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Correspondence to Huoyue Xiang.

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He, J., Xiang, H., Li, Y. et al. Aerodynamic impact of train-induced wind on a moving motor-van. Front. Struct. Civ. Eng. 16, 909–927 (2022). https://doi.org/10.1007/s11709-022-0833-1

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  • DOI: https://doi.org/10.1007/s11709-022-0833-1

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