Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Vertical coherence functions of wind forces and influences on wind-induced responses of a high-rise building with section varying along height

  • Huang, D.M. (School of Civil Engineering, Central South University) ;
  • Zhu, L.D. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Chen, W. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University) ;
  • Ding, Q.S. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
  • Received : 2015.01.24
  • Accepted : 2015.03.26
  • Published : 2015.08.25
⟨ Previous Next ⟩

Abstract

The characteristics of the coherence functions of X axial, Y axial, and RZ axial (i.e., body axis) wind forces on the Shanghai World Trade Centre - a 492 m super-tall building with section varying along height are studied via a synchronous multi-pressure measurement of the rigid model in wind tunnel simulating of the turbulent, and the corresponding mathematical expressions are proposed there from. The investigations show that the mathematical expressions of coherence functions in across-wind and torsional-wind directions can be constructed by superimposition of a modified exponential decay function and a peak function caused by turbulent flow and vortex shedding respectively, while that in along-wind direction need only be constructed by the former, similar to that of wind speed. Moreover, an inductive analysis method is proposed to summarize the fitted parameters of the wind force coherence functions of every two measurement levels of altitudes. The comparisons of the first three order generalized force spectra show that the proposed mathematical expressions accord with the experimental results well. Later, the influences of coherence functions on wind-induced dynamic responses are analyzed in detail based on the proposed mathematical expressions and the frequency-domain method of random vibration theory.

Keywords

References

  1. Davenport, A.G. (1965), "The relationship of wind structure to wind loading of Symposium", Proceedings of the 3rd International Conference on Wind Effect on Building and Structures. Vol.1, London.
  2. ECCS Technical Committee T12 (1978), Wind Effects, Recommendations for the Calculation of Wind Effects on Buildings and Structures.
  3. Gu, M. and Quan, Y. (2004), "Across-wind loads of typical tall buildings", J. Wind Eng. Ind. Aerod., 92(13), 1147-1165. https://doi.org/10.1016/j.jweia.2004.06.004
  4. Hansen, S.O. and Krenk, S. (1999), "Dynamic along-wind response of simple structures", J. Wind Eng. Ind. Aerod., 82(1-3), 147-171. https://doi.org/10.1016/S0167-6105(98)00215-3
  5. Holmes, J.D. and Lewis, R.E. (1987), "Optimization of dynamics-pressure-measurement systems I. &II", J. Wind Eng. Ind. Aerod., 25, 249-290. https://doi.org/10.1016/0167-6105(87)90021-3
  6. Huang, D.M., Zhu, L.D. and Ding, Q.S. (2008), "Identification of modal parameters for a high-rise building aeroelastic model", J.Vib. Eng., 21(3), 291-297. (in Chinese)
  7. Huang, D.M., Zhu, L.D. and Ding, Q.S. (2009), "Experimental research on vertical coherence function of wind velocities", J. Exp. Fluid Mech., 23(4), 34-40. (in Chinese)
  8. Huang, D.M., Zhu, L.D. and Chen, W. (2014), "Power spectra of wind forces on a high-rise building with section varying along height", Wind Struct., 18(3), 295-320. https://doi.org/10.12989/was.2014.18.3.295
  9. Irwin, H.P.A.H., Cooper, K.R. and Girard, R. (1979), "Correction of distortion effects caused by tubing systems in measurements of fluctuating pressures", J. Wind Eng. Ind. Aerod., 5(1-2), 93-107. https://doi.org/10.1016/0167-6105(79)90026-6
  10. Kareem, A. and Zhou, Y. (2003),"Gust loading factor - past, present and future", J. Wind Eng. Ind. Aerod,, 91(12-15), 1301-1328. https://doi.org/10.1016/j.jweia.2003.09.003
  11. Krenk, S. (1995), "wind field coherence and dynamic wind forces", Symposium on the advances in Nonlinear Stochastic Mechanics, (Eds., Noess and Krenk), Kluwer, Dordrecht.
  12. Liang, S.G., Liu, S.C., Li, Q.S. Zhang, L.L. and Gu, M. (2002), "Mathematical model of acrosswind dynamic loads on rectangular tall buildings", J. Wind Eng. Ind. Aerod., 90(12-15), 1757-1770 https://doi.org/10.1016/S0167-6105(02)00285-4
  13. Liang, S.G., Li, Q.S., Liu, S.C. Zhang, L.L. and Gu, M. (2004), "Torsional dynamic wind loads on rectangular tall buildings", Eng. Struct., 26(1), 129-137. https://doi.org/10.1016/j.engstruct.2003.09.004
  14. Lin, N., Letchford, C., Tamura, Y., Liang, B. and Nakamura, O. (2005), "Characteristics of wind forces acting on tall buildings", J. Wind Eng. Ind. Aerod., 93(3), 217-242. https://doi.org/10.1016/j.jweia.2004.12.001
  15. Marukawa, H., Ohkuma T. and Momomura Y. (1992), "Acrosswind and torsional acceleration of prismatic high rise buildings", J. Wind Eng. Ind. Aerod., 41-44, 1139-1150.
  16. Ministry of Construction P.R.China (2006), Load code for the design of building structures-GB 50009-2006, Chinese building industry press, Beijing, (in Chinese).
  17. NIST HR-DAD, high-rise database-assisted design, http://www.itl.nist.gov/div898/winds/HR_DAD_RC_1.0/hr_dad_rc_1.0.htm
  18. 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, Saikon, Tokyo.
  19. Simiu, E. and Scanlan, R.H. (1996), Wind effects on structures, 3rd Ed., Wiley, New York.
  20. Simiu, E., Gabbai, R.D. and Fritz, W.P. (2006), "Wind-induced tall building response: a time-domain approach", Wind Struct., 11(6), 427-440. https://doi.org/10.12989/was.2008.11.6.427

Cited by

  1. Prediction of wind loads on high-rise building using a BP neural network combined with POD vol.170, 2017, https://doi.org/10.1016/j.jweia.2017.07.021
  2. A harmonic piecewise linearisation-wavelet transforms method for identification of non-linear vibration “black box” systems: Application in wind-induced vibration of a high-rise building vol.78, 2018, https://doi.org/10.1016/j.jfluidstructs.2017.12.021
  3. Characteristics of the aerodynamic interference between two high-rise buildings of different height and identical square cross-section vol.24, pp.5, 2015, https://doi.org/10.12989/was.2017.24.5.501
  4. Experimental investigation of vortex-induced aeroelastic effects on a square cylinder in uniform flow vol.30, pp.1, 2020, https://doi.org/10.12989/was.2020.30.1.037
  5. TMD effectiveness for steel high-rise building subjected to wind or earthquake including soil-structure interaction vol.30, pp.4, 2015, https://doi.org/10.12989/was.2020.30.4.423