Characteristic analysis of occurrence probability for vortex-induced vibration of long-span bridge based on health monitoring system

Liutian Zhang, Wei Cui and Lin Zhao

Reliability Engineering and System Safety, 2026, vol. 265, issue PB

Abstract: Investigating the relationship between wind climates and vortex-induced vibration (VIV) of bridges based on field measurements is fast developing currently. However, the VIV of long-span bridges clearly indicates random features. Even under the wind climates vulnerable for VIV, VIV occasionally occurs, and little attention has been paid to the non-VIV samples with the same wind condition as VIV occurs. Based on 13 years of structural health monitoring data, this study explores the key factors affecting the VIV of prototype bridge statistically. Firstly, the impact of wind speed, yaw direction, turbulence intensity and angle of attack on the VIV probability is examined synaptically. Subsequently, under the wind condition sensitive to VIV, unobserved parameters such as the damping ratio and vehicle load that are not directly observed but with strong temporal effect are discussed. The results show that the VIV can be significantly mitigated by heavy traffic volume, and the VIV probability in winter is almost negligible for high damping ratio. The fluctuation of VIV probability in one year makes short-term measurements limited in a particular season may contain large systematic errors. Finally, a prediction framework based on the Markov chain is proposed to evaluate the VIV risk under given conditions.

Keywords: Vortex induced vibration; Field measurement; Unobserved parameter; Probability assessment (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:265:y:2026:i:pb:s0951832025007161

DOI: 10.1016/j.ress.2025.111516

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