Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Effects of turbulence intensity and exterior geometry on across-wind aerodynamic damping of rectangular super-tall buildings

  • Quan, Y. (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University) ;
  • Cao, H.L. (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University) ;
  • Gu, M. (State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University)
  • Received : 2014.04.15
  • Accepted : 2015.12.14
  • Published : 2016.02.25
⟨ Previous Next ⟩

Abstract

Across-wind aerodynamic damping ratios are identified from the wind-induced acceleration responses of 15 aeroelastic models of rectangular super-high-rise buildings in various simulated wind conditions by using the random decrement technique. The influences of amplitude-dependent structural damping ratio and natural frequency on the estimation of the aerodynamic damping ratio are discussed and the identifying method for aerodynamic damping is improved at first. Based on these works, effects of turbulence intensity $I_u$, aspect ratio H/B, and side ratio B/D on the across-wind aerodynamic damping ratio are investigated. The results indicate that turbulence intensity and side ratio are the most important factors that affect across-wind aerodynamic damping ratio, whereas aspect ratio indirectly affects the aerodynamic damping ratio by changing the response amplitude. Furthermore, empirical aerodynamic damping functions are proposed to estimate aerodynamic damping ratios at low and high reduced speeds for rectangular super-high-rise buildings with an aspect ratio in the range of 5 to 10, a side ratio of 1/3 to 3, and turbulence intensity varying from 1.7% to 25%.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. AIJ 2004 (2004), Recommendations for Loads on Building, Architectural Institute of Japan.
  2. Aquino, R.E.R. and Tamura, Y. (2011), "Damping based on EPP spring models of stick-slip surfaces", Proceedings of the 13th ICWE, Amsterdam, Holland, July.
  3. Cao H.L. (2012), Aerodynamic damping of super-high-rise building, Ph.D Thesis (in Chinese), Tongji University, Shanghai, China.
  4. Cheng, C.M., Lu, P.C. and Tsai, M.S. (2002), "Across-wind aerodynamic damping of isolated square-shaped buildings", J. Wind Eng. Ind. Aerod., 90(12-15), 1743-1756. https://doi.org/10.1016/S0167-6105(02)00284-2
  5. Davenport, A.G. (1979), "The influence of turbulence on the aeroelastic responses of tall structures to the wind", IAHR-IUTAM Symp. Pract. Exp. with Flow Ind. Vib., Karlsruhe, Germany, July.
  6. GB50009-2001(2012), Load Code for the Design of Building Structures (in Chinese), China Architecture & Building Press.
  7. 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
  8. Kareem, A. (1978), Wind excited motion of buildings, Ph.D thesis, Colorado State University at Fort Collin, Colorado, USA.
  9. Kim, Y.C., Tamura, Y. and Yoon, S.(2015), "Effect of taper on fundamental aeroelastic behaviors of super-tall buildings", Wind Struct., 20(4), 527-548. https://doi.org/10.12989/was.2015.20.4.527
  10. Li Q.S., Hu G. and Yan B. (2014), "Investigation of the effects of free-stream turbulence on wind-induced responses of tall building by Large Eddy Simulation", Wind Struct., 18(6), 599-618 https://doi.org/10.12989/was.2014.18.6.599
  11. Marukawa, H., Kato, N., Fujii, K. and Tamura, Y. (1996), "Experimental evaluation of aerodynamic damping of tall buildings", J. Wind Eng. Ind. Aerod., 59(2-3), 177-190. https://doi.org/10.1016/0167-6105(96)00006-2
  12. Nishimura, H. and Taniike, Y. (1995), "Unsteady wind forces on a square prism in a turbulent boundary layer", Proceedings of the 9th ICWE, New Delhi, India, July.
  13. Okada, K., Nakamura, Y., Shiba, K., Hayakawa, T., Tsuji, E. and Ukita, T. (1993), Forced vibration tests of ORC200 symbol Tower, Part 1: Test methods and results, Summaries of technical Papers of Annual Meeting of Architectural Institute of Japan, Structures 1, 875-876.
  14. Parkinson, G.V. (1963), "Aeroelastic galloping in one degree of freedom", Proceedings of the Symp On Wind Effects on Buildings and Structures, Teddington, England, July.
  15. Quan, Y. (2002), Across-wind loads and responses on super high-rise buildings, Ph.D. Thesis (in Chinese), Tonji University, Shanghai, China.
  16. Quan, Y. and Gu, M. (2004), "Aerodynamic damping of square section high-rise buildings" (in Chinese), J. Eng. Mech., China Society of Theoretical and Applied Mechanics, 21(1), 26-30.
  17. Quan, Y. and Gu, M. (2005), "Experimental evaluation of aerodynamic damping of square super high-rise buildings", Wind Struct., 8(5), 309-324. https://doi.org/10.12989/was.2005.8.5.309
  18. Steckley, A. (1989), Motion-Induced Wind Forces on Chimneys and Tall Buildings, Ph.D thesis, The University of Western Ontario, London, Ontario, Canada.
  19. Steckley, A., Vickery, B.J. and Isyumov, N. (1990), "On the measurement of motion induced forces on models in turbulent shear flow", J. Wind Eng. Ind. Aerod., 36(1-3), 339-350. https://doi.org/10.1016/0167-6105(90)90318-7
  20. Tamura, Y. (2006), "Amplitude dependency of damping in buildings and estimation techniques", Proceedings of the 12th AWES Wind Engineering Workshop, Queenstown, New Zealand, August.
  21. Tamura, Y., Suda, K. and Sasaki, A. (2000), "Damping in buildings for wind resistant design", Proceedings of the International Symposium on Wind and Structures for the 21st Century, Cheju, Korea, July.
  22. Tamura, Y. and Suganuma, S.Y. (1996), "Evaluation of amplitude-dependent damping and natural frequency of buildings during strong winds", J. Wind Eng. Ind. Aerod., 59 (2-3), 115-130. https://doi.org/10.1016/0167-6105(96)00003-7
  23. Vickery, B.J. and Steckley, A. (1993), "Aerodynamic damping and vortex excitation on an oscillating prism in turbulent shear flow", J. Wind Eng. Ind. Aerod., 49(1-3), 121-140. https://doi.org/10.1016/0167-6105(93)90009-D
  24. Venanzi, I. and Materazzi, A.L. (2012), "Acrosswind aeroelastic response of square tall buildings: a semi-analytical approach based of wind tunnel tests on rigid models", Wind Struct., 15(6), 495-508. https://doi.org/10.12989/was.2012.15.6.495
  25. Watanabe, Y., Isyumov, N. and Davenport, A.G. (1997), "Empirical aerodynamic damping function for tall buildings", J. Wind Eng. Ind. Aerod., 72(1-3), 313-321. https://doi.org/10.1016/S0167-6105(97)00260-2
  26. Wu, D. (2012), Research on across-wind galloping stability of high-rise buildings with rectangular cross-sections, Master Thesis (in Chinese), Tongji University, Shanghai, China.
  27. Zou, L.H., Liang, S.G. and Gu, M. (2003), "Evaluation of aerodynamic damping in wind-induced vibration of tall buildings by random decrement technology", J. HU ST. (Urban Science Edition), 20(1), 30-33 [In Chinese].

Cited by

  1. Lateral drift constrained structural optimization of an actual supertall building acted by wind load vol.26, pp.6, 2017, https://doi.org/10.1002/tal.1344
  2. Influence of structure coupling effect on damping coefficient of offshore wind turbine blades vol.29, pp.6, 2016, https://doi.org/10.12989/was.2019.29.6.431
  3. Monitoring of wind effects on a super-tall building during multiple typhoons and validation of wind tunnel testing techniques vol.17, pp.11, 2016, https://doi.org/10.1080/15732479.2020.1815806
  4. Experimental study on the coupling effects of wind-induced vibration of square-sectioned high-rise buildings with different stiffness ratios vol.252, pp.None, 2016, https://doi.org/10.1016/j.engstruct.2021.113746
  5. Numerical simulation of wind veering effects on aeroelastic responses of thousand-meter-scale super high-rise buildings vol.46, pp.None, 2016, https://doi.org/10.1016/j.jobe.2021.103790