Wind and Structures

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Analytical study of wind-rain-induced cable vibration : 2DOF model

  • Wang, L.Y. (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University) ;
  • Xu, Y.L. (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University)
  • Received : 2002.10.18
  • Accepted : 2003.07.14
  • Published : 2003.08.25
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Abstract

Many investigations have been conducted to find out the reason behind wind-rain-induced cable vibration in cable-stayed bridges. A single-degree-of-freedom (SDOF) analytical model, which could capture main features of wind-rain-induced cable vibration, was recently presented by the writers. This paper extends the SDOF model to a 2DOF model by including the equation of motion of upper rivulet. The interaction between the upper rivulet and the cable is described in terms of nonlinear damping force, linear restoring force, and inertia force. The computed results using the 2DOF model are first compared with the results from simulated wind-rain tunnel tests, and the comparison is found satisfactory in general. The possible mechanisms of wind-rain-induced cable vibration are discussed and a parametric study is then conducted. Finally, the computed results using the 2DOF model are compared with those predicted by the SDOF model. The 2DOF model is found better than the SDOF model but the SDOF model is still acceptable for its simplicity.

Keywords

References

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  3. Measurement of rivulet movement and thickness on inclined cable using videogrammetry vol.18, pp.3, 2016, https://doi.org/10.12989/sss.2016.18.3.485
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  7. Mitigation of Wind-Rain-Induced Cable Vibration in Cable-Stayed Bridges: Energy Cost Assessment vol.105-107, pp.1662-7482, 2011, https://doi.org/10.4028/www.scientific.net/AMM.105-107.1165
  8. Mitigation of Wind-Rain-Induced Cable Vibration in Cable-Stayed Bridges: Measurement Error vol.226-228, pp.1662-7482, 2012, https://doi.org/10.4028/www.scientific.net/AMM.226-228.1630
  9. Active stiffness control of wind-rain-induced vibration of prototype stay cable vol.74, pp.1, 2008, https://doi.org/10.1002/nme.2152