DOI QR코드

DOI QR Code

Vortex induced vibration and flutter instability of two parallel cable-stayed bridges

  • Junruang, Jirawat (Department of Civil Engineering, Thammasat University, Rangsit Campus) ;
  • Boonyapinyo, Virote (Department of Civil Engineering, Thammasat University, Rangsit Campus)
  • 투고 : 2019.09.02
  • 심사 : 2020.03.19
  • 발행 : 2020.06.25

초록

The objective of this work was to investigate the interference effects of two-parallel bridge decks on aerodynamic coefficients, vortex-induced vibration, flutter instability and flutter derivatives. The two bridges have significant difference in cross-sections, dynamic properties, and flutter speeds of each isolate bridge. The aerodynamic static tests and aeroelastic tests were performed in TU-AIT boundary layer wind tunnel in Thammasat University (Thailand) with sectional models in a 1:90 scale. Three configuration cases, including the new bridge stand-alone (case 1), the upstream new bridge and downstream existing bridge (case 2), and the downstream new bridge and the upstream existing bridge (case 3), were selected in this study. The covariance-driven stochastic subspace identification technique (SSI-COV) was applied to identify aerodynamic parameters (i.e., natural frequency, structural damping and state space matrix) of the decks. The results showed that, interference effects of two bridges decks on aerodynamic coefficients result in the slightly reduction of the drag coefficient of case 2 and 3 when compared with case 1. The two parallel configurations of the bridge result in vortex-induced vibrations (VIV) and significantly lower the flutter speed compared with the new bridge alone. The huge torsional motion from upstream new bridge (case 2) generated turbulent wakes flow and resulted in vertical aerodynamic damping H1* of existing bridge becomes zero at wind speed of 72.01 m/s. In this case, the downstream existing bridge was subjected to galloping oscillation induced by the turbulent wake of upstream new bridge. The new bridge also results in significant reduction of the flutter speed of existing bridge from the 128.29 m/s flutter speed of the isolated existing bridge to the 75.35 m/s flutter speed of downstream existing bridge.

키워드

과제정보

The authors wish to express their sincere appreciations to Epsilon Co. Ltd. in Association with Wiecon Co. Ltd., and Expressway Authority of Thailand for their financial supports in wind tunnel test. The scholarship for Ph.D. Student of Faculty of Engineering, Thammasat University to the first author is also acknowledged.

참고문헌

  1. AES Group, Kinematics and OPAC (2001), "The Rama IX Bridge Tenth-Year Inspection", Submitted to Expressway and Rapid Transit Authority of Thailand
  2. Andersen, S.A., Oiseth, O., Johansson, J. and Brandt, A. (2018), "Flutter derivatives from free decay tests of a rectangular B/D=10 section estimated by optimized system identification methods", Eng. Struct., 156, 284-293, https://doi.org/10.1016/j.engstruct.2017.11.059
  3. Argentini, T., Rocchi, D. and Zasso, A. (2015), "Aerodynamic interference and vortex-induced vibrations on parallel bridges: The Ewijk bridge during different stages of refurbishment", J. Wind Eng. Ind. Aerod., 147, 276-282. http://dx.doi.org/10.1016/j.jweia.2015.07.012
  4. Boonyapinyo, V., Yamada, H. and Miyata, T. (1994), "Wind-induced nonlinear lateral- torsional buckling of cable-stayed bridges", J.Struct. Eng., 120(2), 486-506. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:2(486).
  5. Boonyapinyo, V., Miyata, T. and Yamada, H. (1999), "Advanced aerodynamic analysis of suspension bridges by state-space approach", J.Struct. Eng., 125(12), 1357-1366. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:12(1357).
  6. Boonyapinyo, V., Lauhatanon, Y. and Lukkunaprasit, P. (2006), "Nonlinear aerostatic stability analysis of suspension bridges", Eng. Struct., 28(5), 793-803. https://doi.org/10.1016/j.engstruct.2005.10.008.
  7. Boonyapinyo V., Janesupasaeree T. and Thamasungkeeti W. (2009), "Identification of flutter derivatives of bridge decks by stochastic subspace method", The 7th Asia-Pacific Conference on Wind Engineering, Taipei, November.
  8. Boonyapinyo, V. and Janesupasaeree, T. (2010), "Data-driven stochastic subspace identification of flutter derivatives of bridge decks", J. Wind Eng. Ind. Aerod., 98(12), 784-799. https://doi.org/10.1016/j.jweia.2010.07.003.
  9. Dallaire, P.O., Taylorb, Z.J. and Stoyanoffc, S. (2016), "Sectional model tests of tandem bridge decks in dynamic suspension systems", In the 8th International Colloquium on Bluff Body Aerodynamics and Applications., Massachusetts, U.S.A, June.
  10. Dragomirescu, E., Wang, Z. and Hoftyzer, M. (2016), "Aerodynamic characteristics investigation of Megane multi-box bridge deck by CFD-LES simulations and experimental tests", Wind Struct., 22(2), 161-184. https://doi.org/10.12989/was.2016.22.2.161.
  11. Ehsan, F. and Scanlan, R.H. (1990), "Vortex-induced vibrations of flexible bridges", J. Eng. Mech., 116(6), 1392-1400. https://doi.org/10.1061/(ASCE)0733-9399(1990)116:6(1392).
  12. Epsilon Co. Ltd. and Weicon Co. Ltd. (2016), "EXAT Bridge Project: Mode Shape of Structure", Thailand.
  13. Gu, M., Zhang, R. and Xiang, H. (2001), "Parametric study on flutter derivatives of bridge decks", Eng. Struct., 23(12), 1607-1613. https://doi.org/10.1016/S0141-0296(01)00059-1
  14. Gu, M. and Qin, X.R. (2004), "Direct identification of flutter derivatives and aerodynamic admittances of bridge decks", Eng. Struct., 26(14), 2161-2172. https://doi.org/10.1016/j.engstruct.2004.07.015.
  15. Hu, C., Zhou, Z. and Jiang, B. (2019), "Effects of types of bridge decks on competitive relationships between aerostatic and flutter stability for a super long cable-stayed bridge", Wind Struct., 28(4), 255-270. https://doi.org/10.12989/was.2019.28.4.255
  16. Irwin, P., Stoyanoff, S., Xie, J. and Hunter, M. (2005), "Tacoma narrows 50 years later-wind engineering investigations for parallel bridges", Bridge Struct., 1(1), 3-17. https://doi.org/10.1080/1573248042000274551
  17. Kimura, K., Shima, K., Sano, K., Kubo, Y., Kato, K. and Ukon, H. (2008), "Effects of separation distance on wind-induced response of parallel box girders", J. Wind Eng. Ind. Aerod., 96(6-7), 954-962. http://dx.doi.org/10.1016/j.jweia.2007.06.021.
  18. Kim, S.J., Kim, H.K., Calmer, R., Park, J., Kim, G.S. and Lee, D.K. (2013), "Operational field monitoring of interactive vortex-induced vibrations between two parallel cable-stayed bridges", J. Wind Eng. Ind. Aerod., 123, 143-154. http://dx.doi.org/10.1016/j.jweia.2013.10.001.
  19. Laima, S., Wu, B., Jiang, C., Chen, W. and Li, H. (2019), "Numerical study on Reynolds number effects on the aerodynamic characteristics of a twin-box girder", Wind Struct., 28(5), 285-298. https://doi.org/10.12989/was.2019.28.5.285
  20. Larsen, S.V., Astiz, M.A. and Larose, G.L. (2000), "Aerodynamic interference between two closely spaced cable supported bridges", In the 4th International Colloquium on Bluff Body Aerodynamics and Applications, Bochum, Germany, September.
  21. Liu, Z., Chen, Z., Liu, G. and Shao, X. (2009), "Experimental study of aerodynamic interference effects on aerostatic coefficient of twin deck bridges", Front. Archit. Civ. Eng. China, 3(3), 292-298. https://doi.org/10.1007/s11709-009-0048-8
  22. Meng, X., Zhu, L. and Guo, Z. (2011), "Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent cable-stayed bridges", Front. Archit. Civ. Eng. China, 5(4), 510-517. https://doi.org/10.1007/s11709-011-0129-3
  23. Park, J., Kim, S. and Kim, H.K. (2017), "Effect of gap distance on vortex-induced vibration in two parallel cable-stayed bridges", J. Wind Eng. Ind. Aerod., 162, 35-44. http://dx.doi.org/10.1016/j.jweia.2017.01.004
  24. Park, J. and Kim, H.K. (2017), "Effect of the relative differences in the natural frequencies of parallel cable-stayed bridges during interactive vortex-induced vibration", J. Wind Eng. Ind. Aerod., 171, 330-341. https://doi.org/10.1016/j.jweia.2017.10.010.
  25. Pospisil, S., Buljac, A., Kozmar, H., Kuznetsov, S., Machacek, M. and Kral, R. (2016), "Influence of stationary vehicles on bridge aerodynamic and aeroelastic coefficients", J. Bridge Eng., 22(4), 05016012. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001017
  26. Sato, H. (2003), "Wind-resistant design manual for highway bridges in Japan", J. Wind Eng. Ind. Aerod., 91(12-15), 1499-1509. https://doi.org/10.1016/j.jweia.2003.09.012.
  27. Seo, J.W., Kim, H.K., Park, J., Kim, K.T. and Kim, G.N. (2013), "Interference effect on vortex-induced vibration in a parallel twin cable-stayed bridge", J. Wind Eng. Ind. Aerod., 116, 7-20. http://dx.doi.org/10.1016/j.jweia.2013.10.001.
  28. Simiu, E. and Scanlan, R.H. (1996), "Wind Effects on Structures", John Wiley, New York, U.S.A.
  29. Wang, K., Liao, H. and Li, M. (2016), "Flutter suppression of long-span suspension bridge with truss girder", Wind Struct., 23(5), 405-420. https://doi.org/10.12989/was.2016.23.5.405
  30. Zhang, Z.T. and Chen Z.Q. (2011), "Similarity of amplitude of sectional model to that of full bridge in the case of vortex-induced resonance", China Civil Eng. J., 44(7), 77-82.
  31. Zhu, L.D. (2005), "Mass simulation and amplitude conversion of bridge sectional model test for vortex-excited resonance", Eng. Mech., 22(5), 204-208. https://doi.org/10.3969/j.issn.1000-4750.2005.05.037