Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Sensitivity and vibration reduction of buffeting induced resonance of hangers

  • Received : 2016.07.19
  • Accepted : 2017.06.09
  • Published : 2017.07.25
⟨ Previous Next ⟩

Abstract

Buffeting induced resonance (BIR) of hangers on long-suspension bridges is briefly reviewed, including mechanism and experimental verification. Taken the Xihoumen suspension bridge as a numerical example, sensitivities of the BIR of hangers to wind properties are investigated, including types of wind spectrum, turbulence intensity, and spacial coherence of wind fluctuations. Numerical simulations indicate that the BIR of hangers occur to both cases of different wind spectra, showing that it is insensitive to types of wind spectrum. On the other hand, it is found that the turbulence intensity affects buffeting of main cables almost in a linear manner, and so it does to the BIR of the hangers; however, the resonance factors, namely the ratio of the response of the hanger to that of the main cable, are little affected by the turbulence intensity. The spacial coherence of the wind fluctuations, although plays an important role on the buffeting responses of the main structure, has no substantial effects on the BIR of the hangers. Finally, replacement of steel strand with CFRP material has been verified as a very effective countermeasure against the BIR of hangers.

Keywords

Acknowledgement

Supported by : National Science Foundation of China

References

  1. Cheng, S., Tanaka, H., Larose, G.L. and Savage, M.G. (2003), "Aerodynamic behavior of an inclined circular cylinder", Wind Struct., 6(3), 197-208. https://doi.org/10.12989/was.2003.6.3.197
  2. Cigada, A., Diana, G., Falco, M., Fossati, F. and Manenti A. (1997), "Vortex shedding and wake-induced vibrations in single and bundle cables", J. Wind Eng. Ind. Aerod., 72(1), 253-263. https://doi.org/10.1016/S0167-6105(97)00247-X
  3. Deodatis, G. (1996), "Simulation of ergodic multivariate stochastic processes", J. Eng. Mech. - ASCE, 122(8), 778-787. https://doi.org/10.1061/(ASCE)0733-9399(1996)122:8(778)
  4. Dyrbye, C. and Hansen, S.O. (1997), Wind Loads on Structures, John Whiley &Sons Ltd., Chichester, England, UK.
  5. Hikami, Y. and Shiraishi, N. (1988), "Rain-wind induced vibrations of cables stayed bridges", J. Wind Eng. Ind. Aerod., 29(1-3), 409-418. https://doi.org/10.1016/0167-6105(88)90179-1
  6. Kristensen, L. and Jensen, N. O. (1979), "Lateral coherence in isotropic turbulence and in the natural wind", Bound. -Lay. Meteorol., 17(3), 353-373. https://doi.org/10.1007/BF00117924
  7. Kristensen, L., Panofsky, H.A. and Smith, S.D. (1981), "Lateral coherence of longitudinal wind components in strong winds", Bound. -Lay. Meteorol, 21(2), 199-205. https://doi.org/10.1007/BF02033937
  8. Laursen, E., Bitsch, N. and Andersen, J.E. (2006). "Analysis and mitigation of large amplitude cable vibration at the Great Belt East bridge", Proceedings of the IABSE Conference, Copenhagen, July.
  9. Macdonald, J.H.G. and Larose, G.L. (2006), "A unified approach to aerodynamic damping and drag/lift instabilities, and its application to dry inclined cable galloping", J. Fluids Struct., 22(2), 229-252. https://doi.org/10.1016/j.jfluidstructs.2005.10.002
  10. Matsumoto, M., Shirato, H., Yagi, T., Goto, M., Sakai, S. and Ohya, J. (2003), "Field observation of the full-scale wind-induced cable vibration", J. Wind Eng. Ind. Aerod., 91(1-2), 13-26. https://doi.org/10.1016/S0167-6105(02)00332-X
  11. Matsumoto, M., Yagi, T., Hatsuda, H., shima, T., Tanaka, M. and Naito H. (2010). "Dry galloping characteristics and its mechanism of inclined/yawed cables", J. Wind Eng. Ind. Aerod., 98(6-7), 317-327. https://doi.org/10.1016/j.jweia.2009.12.001
  12. Miyata, T., Yamada, H. and Hojo, T. (1994), "Aerodynamic response of PE stay cables with pattern-indented surface", Proceedings of the International Conference on Cable-Stayed and Suspension Bridges (AFPC), Deauville, March.
  13. Price, S.J. (1975), "Wake induced flutter of power transmission conductors", J. Sound Vib., 38(1), 125-147. https://doi.org/10.1016/S0022-460X(75)80023-X
  14. Raeesi, A., Cheng, S. and Ting, D.S. (2013), "Aerodynamic damping of an inclined circular cylinder in unsteady flow and its application to the prediction of dry inclined cable galloping", J. Wind Eng. Ind. Aerod., 113(1), 12-28. https://doi.org/10.1016/j.jweia.2012.12.003
  15. Shiotani, M. and Iwatani, Y. (1972), "Correlations of wind velocities in relation to the gust loadings", Proceedings of the 3rd International conference on wind effects on buildings and structures, Tokyo, May.
  16. Simiu, E. and Scanlan, R.H. (1996), Wind Effects on Structures Fundamentals and Applications to Design, JohnWiley & Sons, Inc., New York., NY, USA.
  17. Tieleman, H.W. (2008), "Strong wind observations in the atmospheric surface layer", J. Wind Eng. Ind. Aerod., 96(1), 41-77. https://doi.org/10.1016/j.jweia.2007.03.003
  18. Zhang, Z.T. and Ge, Y.J. (2015), "Buffeting induced resonance of hangers on a suspension bridge", Proceedings of the 14th ICWE, Porto Algre, June.
  19. Zhang, Z.T., Wu, X.B., Chen, Z.Q. and Ge, Y.J. (2016), "Mechanism of a kind of hanger oscillation at suspension bridges: Buffeting induced resonance", J. Bridge Eng.- ASCE , 21(3).
  20. Zuo, D. and Jones, N. P. (2010). "Interpretations of field observations of wind- and rain-wind-induced stay cable vibrations", J. Wind Eng. Ind. Aerod., 98(2), 73-87. https://doi.org/10.1016/j.jweia.2009.09.004