Applied Sciences (Oct 2023)

Evaluation of Ride Comfort under Vortex-Induced Vibration of Long-Span Bridge

  • Yafei Wang,
  • Changfa Zhou,
  • Jiwei Zhong,
  • Zhengxing Wang,
  • Wenfan Yao,
  • Yuyin Jiang,
  • Shujin Laima

DOI
https://doi.org/10.3390/app132011505
Journal volume & issue
Vol. 13, no. 20
p. 11505

Abstract

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The increasing number of suspension bridges has led to designs favoring greater length and flexibility, resulting in a common problem of vortex-induced vibration. While vortex-induced vibration typically does not cause structural damage, it diminishes the bridge’s fatigue resistance and has a detrimental impact on ride comfort. Additionally, this study introduces a road–bridge–vehicle vibration model, proposing an evaluation method for assessing ride comfort during vortex-induced vibrations in long-span bridges. This method features simplified modeling and swift calculations, circumventing the need for intricate finite element modeling and iterative solving. Furthermore, it evaluates ride comfort for vehicles crossing a prototype long-span suspension bridge using the Overall Vibration Total Value (OVTV) and Motion Sickness Incidence (MSI) criteria. This study also analyzes the influence of various parameters on OVTV and MSI, including vehicle speed, road grade, vortex-induced vibration frequency, and amplitude. It establishes a reference limit for vortex-induced vibration amplitude based on OVTV and MSI values. Moreover, the study substantiates that, within the context of vortex-induced vibration, the MSI value is more suitable for evaluating driving comfort compared to the OVTV.

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