Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Linear regression analysis of buffeting response under skew wind

  • Guo, Zengwei (State Key Laboratory of Disaster Reduction in Civil Engineering, Department of Bridge Engineering, Tongji University) ;
  • Ge, Yaojun (State Key Laboratory of Disaster Reduction in Civil Engineering, Department of Bridge Engineering, Tongji University) ;
  • Zhao, Lin (State Key Laboratory of Disaster Reduction in Civil Engineering, Department of Bridge Engineering, Tongji University) ;
  • Shao, Yahui (State Key Laboratory of Disaster Reduction in Civil Engineering, Department of Bridge Engineering, Tongji University)
  • Received : 2011.11.28
  • Accepted : 2012.04.02
  • Published : 2013.03.25
⟨ Previous Next ⟩

Abstract

This paper presents a new analysis framework for predicting the internal buffeting forces in bridge components under skew wind. A linear regressive model between the internal buffeting force and deformation under normal wind is derived based on mathematical statistical theory. Applying this regression model under normal wind and the time history of buffeting displacement under skew wind with different yaw angles in wind tunnel tests, internal buffeting forces in bridge components can be obtained directly, without using the complex theory of buffeting analysis under skew wind. A self-anchored suspension bridge with a main span of 260 m and a steel arch bridge with a main span of 450 m are selected as case studies to illustrate the application of this linear regressive framework. The results show that the regressive model between internal buffeting force and displacement may be of high significance and can also be applied in the skew wind case with proper regressands, and the most unfavorable internal buffeting forces often occur under yaw wind.

Keywords

References

  1. Borri, C., Costa, C. and Zahlten, W. (2002), "Non-stationary flow forces for the numerical simulation of aeroelastic instability of bridge decks", Comput. Struct., 80(12), 1071-1079. https://doi.org/10.1016/S0045-7949(02)00066-4
  2. Davenport, A.G. (1962), "Buffeting of a suspension bridge by storm winds", J. Struct. Division, 88(3), 233-268.
  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. Ge, Y.J. and Tanaka, H. (2000), "Aerodynamic flutter analysis of cable-supported bridges by multi-mode and full-mode approaches", J. Wind Eng. Ind. Aerod., 86, 123-153. https://doi.org/10.1016/S0167-6105(00)00007-6
  5. Kimura, K. and Tanaka, H. (1992), "Bridge buffeting due to wind with yaw angles", J. Wind Eng. Ind. Aerod., 42(1-3), 1309-1320. https://doi.org/10.1016/0167-6105(92)90139-2
  6. Lin, Y. (1979), "Motion of suspension bridges in turbulent winds", J. Eng. Mech. -ASCE., 105(6), 921-932.
  7. Lin, Y.K. and Li, Q.C. (1983), "Multimode bridge response to wind excitations", J. Eng. Mech. -ASCE, 119(1), 113-127.
  8. Salvatori, L. and Borri, C. (2007), "Frequency-and time-domain methods for the numerical modeling of full-bridge aeroelasticity", Comput. Struct., 85(11-14), 675-687. https://doi.org/10.1016/j.compstruc.2007.01.023
  9. Scanlan, R. (1978), "The action of flexible bridges under wind, II: Buffeting theory", J. Sound Vib., 60(2), 201-211. https://doi.org/10.1016/S0022-460X(78)80029-7
  10. Scanlan, R.H. (1993a), "Bridge buffeting by skew winds in erection stages", J. Eng. Mech. -ASCE., 119(2), 251-269. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:2(251)
  11. Scanlan, R.H. (1993b), "Problematics in formulation of wind-force models for bridge decks", J. Eng. Mech. -ASCE, 119(7), 1353-1375. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:7(1353)
  12. Scanlan, R.H. (2000), "Bridge deck aeroelastic admittance revisited", J. Bridge Eng., 5(1), 1-7. https://doi.org/10.1061/(ASCE)1084-0702(2000)5:1(1)
  13. Shinozuka, M. and Jan, C.M. (1972), "Digital simulation of random processes and its applications", J. Sound Vib., 25(1), 111-128. https://doi.org/10.1016/0022-460X(72)90600-1
  14. Xiang, H.F. (2004), "Wind-resistent design specification for highway bridges", JTG/T D60-01-2004, People's Communication Press (in Chinese).
  15. Xie, J., Tanaka, H., Wardlaw, R. and Savage, M. (1991), "Buffeting analysis of long span bridges to turbulent wind with yaw angle", J. Wind Eng. Ind. Aerod., 37(1), 65-77. https://doi.org/10.1016/0167-6105(91)90005-H
  16. Zhao, L., Ge, Y. and Zhu, L. (2008), "Wind-excited vibration of long-span steel-lattice arch bridge under typhoon climate", Proceeding of the 4th International Conference on Advances in Wind and Structures. Jeju, Korea
  17. Zhu, L., Xu, Y. and Xiang, H. (2002), "Tsing Ma bridge deck under skew winds--Part II: flutter derivatives", J. Wind Eng. Ind. Aerod., 90(7), 807-837. https://doi.org/10.1016/S0167-6105(02)00159-9
  18. Zhu, L., Xu, Y., Zhang, F. and Xiang, H. (2002), "Tsing Ma bridge deck under skew winds-Part I: Aerodynamic coefficients", J. Wind Eng. Ind. Aerod., 90(7), 781-805. https://doi.org/10.1016/S0167-6105(02)00160-5
  19. Zhu, L. and Xu, Y. (2005), "Buffeting response of long-span cable-supported bridges under skew winds. Part 1: theory", J. Sound Vib., 281(3-5), 647-673. https://doi.org/10.1016/j.jsv.2004.01.026
  20. Zhu, L., Wang, M., Wang, D., Guo, Z. and Cao, F. (2007), "Flutter and buffeting performances of Third Nanjing Bridge over Yangtze River under yaw wind via aeroelastic model test", J. Wind Eng. Ind. Aerod., 95(9-11), 1579-1606. https://doi.org/10.1016/j.jweia.2007.02.019

Cited by

  1. Buffeting performance of long-span suspension bridge based on measured wind data in a mountainous region vol.20, pp.1, 2018, https://doi.org/10.21595/jve.2017.18737
  2. Aerodynamic admittance influence on buffeting performance of suspension bridge with streamlined deck vol.21, pp.1, 2013, https://doi.org/10.21595/jve.2018.19681