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<p>Long-span cableway systems are regarded as a key technology for efficient and environmentally friendly transportation in mountainous forestry development. Their wind-induced vibration characteristics directly affect operational safety and efficiency. However, existing studies largely consider unloaded, static cables, and the wind-induced vibration mechanisms of a coupled "cable-car-load" system operating in complex wind fields remain unexplored. In this study, a comprehensive aeroelastic model of the coupled system was developed, and its wind-induced dynamics were analyzed through wind tunnel tests. The influence of key parameters, including wind speed, wind direction, cable inclination, and forest canopy disturbance, was methodically evaluated. The findings reveal that wind speed and direction modulate vertical and horizontal vibrations differently. Crosswinds at 90° induce the strongest vertical vibrations, while oblique winds at 60° and 120° primarily cause horizontal swings, highlighting a notable "oblique-wind-flexible-coupling" effect. Furthermore, cable inclination decisively influences vibration amplitudes: both vertical and horizontal vibrations increase monotonically with angle. At an inclination of 20°, vertical displacement rises by 48.5% compared to a 5° angle. A significant vortex-induced vibration (VIV) resonance is observed within the critical wind speed range of 6.5–8.0&#xa0;m/s, with the presence of a cable car being a major influencing factor. Additionally, the canopy wake exhibits a damping effect, where high turbulence at a 20&#xa0;cm clearance reduces the resonance amplitude by nearly 30%. Consequently, an "environmental damping" strategy that exploits the canopy wake is proposed. A theoretical model was developed, based on the effective projected area, aerodynamic coefficients, and the system's equivalent stiffness, to elucidate the mechanisms behind vibration responses concerning wind direction and inclination. This study offers theoretical and empirical insights for the wind-resistant design, safe operation, and environment-based vibration mitigation of mountain cableways.</p>

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Aeroelastic response and vibration analysis of a cableway transport system under complex mountainous wind conditions

  • 期刊论文

  • 发表日期：

    2026年8月4日

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  • Yongjie Lei,
  • Jianbo Zhou,
  • Lifu Wang,
  • Yiqiang Wu,
  • Wansi Fu,
  • Bin Zhang,
  • Tianyu Wang,
  • Xuhou Li,
  • Qi Xue

摘要

Long-span cableway systems are regarded as a key technology for efficient and environmentally friendly transportation in mountainous forestry development. Their wind-induced vibration characteristics directly affect operational safety and efficiency. However, existing studies largely consider unloaded, static cables, and the wind-induced vibration mechanisms of a coupled "cable-car-load" system operating in complex wind fields remain unexplored. In this study, a comprehensive aeroelastic model of the coupled system was developed, and its wind-induced dynamics were analyzed through wind tunnel tests. The influence of key parameters, including wind speed, wind direction, cable inclination, and forest canopy disturbance, was methodically evaluated. The findings reveal that wind speed and direction modulate vertical and horizontal vibrations differently. Crosswinds at 90° induce the strongest vertical vibrations, while oblique winds at 60° and 120° primarily cause horizontal swings, highlighting a notable "oblique-wind-flexible-coupling" effect. Furthermore, cable inclination decisively influences vibration amplitudes: both vertical and horizontal vibrations increase monotonically with angle. At an inclination of 20°, vertical displacement rises by 48.5% compared to a 5° angle. A significant vortex-induced vibration (VIV) resonance is observed within the critical wind speed range of 6.5–8.0 m/s, with the presence of a cable car being a major influencing factor. Additionally, the canopy wake exhibits a damping effect, where high turbulence at a 20 cm clearance reduces the resonance amplitude by nearly 30%. Consequently, an "environmental damping" strategy that exploits the canopy wake is proposed. A theoretical model was developed, based on the effective projected area, aerodynamic coefficients, and the system's equivalent stiffness, to elucidate the mechanisms behind vibration responses concerning wind direction and inclination. This study offers theoretical and empirical insights for the wind-resistant design, safe operation, and environment-based vibration mitigation of mountain cableways.