DOI QR코드

DOI QR Code

Aerodynamic stability of stay cables incorporated with lamps: a case study

  • Li, S.Y. (Wind Engineering Research Center, College of Civil Engineering, Hunan University) ;
  • Chen, Z.Q. (Wind Engineering Research Center, College of Civil Engineering, Hunan University) ;
  • Dong, G.C. (Wind Engineering Research Center, College of Civil Engineering, Hunan University) ;
  • Luo, J.H. (Wind Engineering Research Center, College of Civil Engineering, Hunan University)
  • 투고 : 2011.12.09
  • 심사 : 2013.08.22
  • 발행 : 2014.01.25

초록

Lamps installed on stay cables of cable-stayed bridges may alter the configuration of circular cross section of the cables and therefore result in aerodynamically unstable cable vibrations. The background of this study is a preliminary design of lamp installation on the cable-stayed He-dong Bridge in Guangzhou, China. Force measurements and dynamic response measurements wind tunnel tests were carried out to validate the possibility of cable galloping vibrations. It is observed that galloping will occur and the critical wind velocity is far less than the design wind velocity at Guangzhou City stipulated in Chinese Code. Numerical simulations utilizing software ANSYS CFX were subsequently performed and almost the same results as the wind tunnel tests were obtained. Moreover, the pressure and velocity contours around cable-lamp model obtained from numerical simulations indicated that the upstream steel wire in the preliminary design is the key factor for the onset of the galloping vibrations. A modification for the preliminary design of lamp installation, which suggests to remove the two parallel steel wires, is proposed, and it effectiveness is validated in further wind tunnel tests.

키워드

참고문헌

  1. Chen, Z.Q., Wang, X.Y., Ko, J.M., Ni, Y.Q., Spencer, B.F., Yang, G. and Hu, J.H. (2004), "MR damping system for mitigating wind-rain induced vibration on Dongting Lake Cable-Stayed Bridge", Wind Struct., 7(5), 293-304. https://doi.org/10.12989/was.2004.7.5.293
  2. Cheng, S.H., Larose, G.L., Savage, M.G., Tanaka, H. and Irwin, P.A. (2008a), "Experimental study on the wind-induced vibration of a dry inclined cable-Part I: phenomena", J. Wind Eng. Ind. Aerod., 96(12), 2231-2253. https://doi.org/10.1016/j.jweia.2008.01.008
  3. Cheng, S.H., Irwin, P.A. and Tanaka, H. (2008b), "Experimental study on the wind-induced vibration of a dry inclined cable-Part II: proposed Mechanisms", J. Wind Eng. Ind. Aerod., 96(12), 2254-2272. https://doi.org/10.1016/j.jweia.2008.01.007
  4. Clough, R.W. and Penzien, J. (2003), Dynamics of structures( 2nd Ed.), California, CSI.
  5. Flamand, O. (1995), "Rain-wind induced vibration of cables", J. Wind Eng. Ind. Aerod., 57(2-3), 353-362. https://doi.org/10.1016/0167-6105(94)00113-R
  6. Flamand, O. and Boujard, O. (2009), "A comparison between dry cylinder galloping and rain-wind induced vibration", Proceedings of the EACWE5, Florence, Italy.
  7. Gu, M. and Du, X.Q. (2005), "Experimental investigation of rain-wind-induced vibration of cables in cable-stayed bridges and its mitigation", J. Wind Eng. Ind. Aerod., 93(1), 79-95. https://doi.org/10.1016/j.jweia.2004.09.003
  8. Gu, M. (2009), "On wind-rain induced vibration of cables of cable-stayed bridges based on quasi-steady assumption", J. Wind Eng. Ind. Aerod., 97(7-8), 381-391. https://doi.org/10.1016/j.jweia.2009.05.004
  9. Hikami, Y. and Shiraishi, N. (1988), "Rain-wind induced vibrations of cables in cable stayed bridges", J. Wind Eng. Ind. Aerod., 29, 409-418. https://doi.org/10.1016/0167-6105(88)90179-1
  10. Hoftyzer, M. and Dragomirescu, E. (2010), "Numerical investigation of flow behaviour around inclined circular cylinders", Proceedings of the 5th International Symposium on Computational Wind Engineering, Chapel Hill, North Carolina, USA .
  11. Holmes, J. D. (2001), Wind loading of structures, London: Spon Press.
  12. Jones, N.P., Jain, A. and Pan, K. (1997), "Effect of stay cable vibration on buffeting response", Proceedings of the Structures Congress '97 ASCE, Portland.
  13. Li, S.Y., Chen. Z.Q. and Kareem, A. (2011), "On the rain-wind induced vibrations: a theoretical analysis", Engineering Mechanics Institute 2011, Boston.
  14. Macdonald, J.H.G. and Larose, G.L. (2008), "Two-degree-of-freedom inclined cable galloping-Part 1: general formulation and solution for perfectly tuned system", J. Wind Eng. Ind. Aerod., 96(3), 291-307. https://doi.org/10.1016/j.jweia.2007.07.002
  15. Matsumoto, M., Saitoh, T., Kitazawa, M., Shirato, H. and Nishizaki, T. (1995), "Response characteristics of rain-wind induced vibration of stay-cable of cable-stayed bridges", J. Wind Eng. Ind. Aerod., 57, 323-333. https://doi.org/10.1016/0167-6105(95)00010-O
  16. Matsumoto, M., Yagi, T., Shigemura, Y. and Tsushima, D. (2001), "Vortex-induced cable vibration of cable-stayed bridges at high reduced wind velocity", J. Wind Eng. Ind. Aerod., 89(7-8), 633-647. https://doi.org/10.1016/S0167-6105(01)00063-0
  17. 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
  18. Schewe, G. (1983), "On the force fluctuations acting on a circular cylinder in crossflow from subcritical up to transcritical Reynolds numbers", J. Fluid. Mech., 133, 265-285. https://doi.org/10.1017/S0022112083001913
  19. Simiu, E. and Scanlan, R.H. (1996), Wind effects on strctures (3nd Ed.), New York: Wieley.
  20. Virlogeux, M. (1998), "Cable vibrations in cable-stayed bridges", Proceedings of the Bridge Aerodynamics, Balkema, Rotterdam.
  21. Yamaguchi, H. (1990), "Analytical study on growth mechanism of rain vibration of cables", J. Wind Eng. Ind. Aerod., 33(1-2), 73-80. https://doi.org/10.1016/0167-6105(90)90022-5
  22. Yamaguchi, H. and Nagahawatta, H.D. (1995), "Damping effects of cable cross ties in cable-stayed bridges", J. Wind Eng. Ind. Aerod., 54-55, 35-43. https://doi.org/10.1016/0167-6105(94)00027-B
  23. Yeo, D. and Jones, N.P. (2008), "Investigation on 3-D characteristics of flow around a yawed and inclined circular cylinder", J. Wind Eng. Ind. Aerod., 96(10-11), 1947-1960. https://doi.org/10.1016/j.jweia.2008.02.040
  24. Zhan, S., Xu, Y.L., Zhou, H.J. and Shum, K.M. (2008), "Experimental study of wind-rain-induced cable vibration using a new model setup scheme" J. Wind Eng. Ind. Aerod., 96(12), 2438-2451. https://doi.org/10.1016/j.jweia.2008.03.011
  25. Zuo, D., Jones, N.P. and Main, J.A. (2008), "Field observation of vortex- and rain-wind-induced stay-cable vibrations in a three-dimensional environment", J. Wind Eng. Ind. Aerod., 96(6-7), 1124-1133. https://doi.org/10.1016/j.jweia.2007.06.046

피인용 문헌

  1. On the aerodynamic characteristics of stay cables attached with helical wires 2017, https://doi.org/10.1177/1369433217739707
  2. Experimental investigation of the aeroelastic behavior of a complex prismatic element vol.20, pp.5, 2015, https://doi.org/10.12989/was.2015.20.5.683
  3. Aerodynamic stability of iced stay cables on cable-stayed bridge vol.23, pp.3, 2016, https://doi.org/10.12989/was.2016.23.3.253