Influence of Maintenance Rail Position and Guide Vanes on Vortex-Induced Vibration Performance of Flat Box Girders

HUANG Lin; DONG Jiahui; WANG Qi; LIAO Haili

doi:10.3969/j.issn.0258-2724.20210474

Volume 58 Issue 3

Jun. 2023

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Journal of Southwest Jiaotong University > 2023 > 58(3): 535-545.

HUANG Lin, DONG Jiahui, WANG Qi, LIAO Haili. Influence of Maintenance Rail Position and Guide Vanes on Vortex-Induced Vibration Performance of Flat Box Girders[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 535-545. doi: 10.3969/j.issn.0258-2724.20210474

Citation:

HUANG Lin, DONG Jiahui, WANG Qi, LIAO Haili. Influence of Maintenance Rail Position and Guide Vanes on Vortex-Induced Vibration Performance of Flat Box Girders[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 535-545. doi: 10.3969/j.issn.0258-2724.20210474

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Influence of Maintenance Rail Position and Guide Vanes on Vortex-Induced Vibration Performance of Flat Box Girders

doi: 10.3969/j.issn.0258-2724.20210474

HUANG Lin^{1, 2
,},
DONG Jiahui^{1, 2},
WANG Qi^{1, 2
,
,},
LIAO Haili^{1, 2}

1.
Research Center for Wind Engineering, Southwest Jiaotong University, Chengdu 610031, China
2.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 17 Jun 2021
Rev Recd Date: 23 Sep 2021

Available Online: 03 Jan 2023

Publish Date: 29 Sep 2021

Abstract

Abstract

To study the influence of the maintenance rail position and the guide vanes on the vortex-induced vibration (VIV) performance of the wide flat box girder section, the Lingdingyang Bridge (a long-span suspension bridge with wide flat steel box girder) is taken as an example. The VIV of the main girder is studied using a 1∶25 scale section model wind tunnel test, and the two-dimensional flow field of the cross section is simulated using computational fluid dynamics. The test results show that increasing l (the distance between the maintenance rail and the bottom edge of the main girder) can significantly improve the VIV performance of a wide flat box girder. When $l\geqslant {W}_{{\rm{b}}}/6$ ( ${W}_{{\rm{b}}}$ is the bottom width of the main girder), the VIV of the girder can be completely eliminated under different wind attack angles. Installing a guide vane with a 17° angle inside or on both sides of the maintenance rail can significantly suppress the VIV of the girder, and the suppression effect is the same. When $l\geqslant {W}_{{\rm{b}}}/10$ , the installation of the guide vane can completely eliminate the VIV of the girder. The numerical simulation results show that increasing the distance between the maintenance rail and the bottom edge of the girder and setting a guide vane can both significantly reduce the periodic vortex-induced force of the main girder by eliminating the wake vortex at the inclined web downstream of the section, thereby suppressing the VIV of the girder.
- wide flat steel box girder,
- vortex-induced vibration,
- aerodynamic countermeasures,
- maintenance rail,
- computational fluid dynamics (CFD),
- large scale section model

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References(29)

References

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