Wind and Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Wind tunnel modeling of roof pressure and turbulence effects on the TTU test building

  • Bienkiewicz, Bogusz (Wind Engineering and Fluids Laboratory, Department of Civil Engineering Colorado State University) ;
  • Ham, Hee J. (Division of Architecture, Kangwon National University)
  • Received : 2000.02.05
  • Accepted : 2002.08.30
  • Published : 2003.04.25
⟨ Previous Next ⟩

Abstract

The paper presents the results of 1:50 geometrical scale laboratory modeling of wind-induced point pressure on the roof of the Texas Tech University (TTU) test building. The nominal (prevalent at the TTU site) wind and two bounding (low and high turbulence) flows were simulated in a boundary-layer wind tunnel at Colorado State University. The results showed significant increase in the pressure peak and standard deviation with an increase in the flow turbulence. It was concluded that the roof mid-plane pressure sensitivity to the turbulence intensity was the cause of the previously reported field-laboratory mismatch of the fluctuating pressure, for wind normal and $30^{\circ}$-off normal to the building ridge. In addition, it was concluded that the cornering wind mismatch in the roof corner/edge regions could not be solely attributed to the wind-azimuth-independent discrepancy between the turbulence intensity of the approach field and laboratory flows.

Keywords

Acknowledgement

Supported by : National Science Foundation

References

  1. Bienkiewicz, B. and Ham, H. J. (1999), "A 1:50 scale wind-tunnel study of wind pressure on TTU building", in: A. Larsen, G.L. Larose, F.M. Livesey (Eds.), Proceedings of the 10th International Conference on Wind Engineering, 1755-1762.
  2. Bienkiewicz, B. and Sun, Y. (1992), "Local wind loading on the roof of a low-rise building", J. Wind Eng. Ind. Aerodyn. 45, 11-24. https://doi.org/10.1016/0167-6105(92)90003-S
  3. Cermak, J. E. and Cochran, L. S. (1992), "Physical modeling of atmospheric surface layer", J. Wind Eng. Ind. Aerodyn. 41-44, 935-946.
  4. Cochran, L. S. (1992), "Wind-tunnel modeling of low-rise structures", Ph. D. Dissertation, Department of Civil Engineering, Colorado State University, Fort Collins, Colorado.
  5. Chok, C. V. (1988), "Wind parameters of Texas Tech University field site", M. S. Thesis, Department of Civil Engineering, Texas Tech University, Lubbock, Texas.
  6. Cook, N. (2002), "Discussion on "Influence of incident wind turbulence on pressure fluctuations near flat-roof corners" by F. Wu, P.P. Sarkar, K.C. Mehta, Z. Zhao", J. Wind Eng. Ind. Aerodyn. 90, 127-130. https://doi.org/10.1016/S0167-6105(01)00117-9
  7. Ham, H. J. (1998), "Turbulence effects on wind-induced building pressure", Ph. D. Dissertation, Department of Civil Engineering, Colorado State University, Fort Collins, Colorado.
  8. Ham, H. J. and Bienkiewicz, B. (1998), "Wind tunnel simulation of TTU flow and building roof pressure", J. Wind Eng. Ind. Aerodyn. 77 & 78, 119-133.
  9. Jamieson, N. J. and Carpenter, P. (1993), "Wind tunnel pressure measurements on the Texas Tech building at scale of 1:25 and comparison with full-scale", Proc. 7USNCWE, University of California at Los Angeles, 303- 312.
  10. Levitan, M. L. and Mehta, K. C. (1992), "Texas Tech field experiments for wind loads part 1: building and pressure measuring system", J. Wind Eng. Ind. Aerodyn. 41-44, 1565-1576.
  11. Levitan, M. L., Mehta, K. C., Vann, W. P. and Holmes, J. D. (1991), "Field measurements of pressures on the Texas Tech Building", J. Wind Eng. Ind. Aerodyn. 38, 227-234. https://doi.org/10.1016/0167-6105(91)90043-V
  12. Lin, J.-X., Surry, D. and Tieleman, H. W. (1995), "The distribution of pressure near roof corners of flat roof low buildings", J. Wind Eng. Ind. Aerodyn. 56, 235-265. https://doi.org/10.1016/0167-6105(94)00089-V
  13. Mehta, K. C., Levitan, M. L., Iverson, R. E. and McDonald, J. R. (1992), "Roof corner pressure measured in the field on a low building", J. Wind Eng. Ind. Aerodyn. 41-44, 181-192.
  14. Okada, H. and Ha, Y.-C. (1992), "Comparison of wind tunnel and full-scale measurement tests on the Texas Tech Building", J. Wind Eng. Ind. Aerodyn. 41-44, 1601-1612.
  15. Rofail, A. W. (1994), "Full-scale/model-scale comparisons of wind pressures on the TTU building", Proc. 9ICWE, New Delhi, India, Wiley Eastern Ltd., 1055-1066.
  16. Sun, Y. (1993), "Wind loading on loose-laid roofing paver systems", Ph. D. Dissertation, Department of Civil Engineering, Colorado State University, Fort Collins, Colorado.
  17. Surry, D. (1991), "Pressure measurements on the Texas Tech building: Wind tunnel measurements and comparisons with full scale", J. Wind Eng. Ind. Aerodyn. 38, 235-247. https://doi.org/10.1016/0167-6105(91)90044-W
  18. Tieleman, H. W., Surry, D. and Mehta, K. C. (1996), "Full/model scale comparison of surface pressures on the Texas Tech experimental building", J. Wind Eng. Ind. Aerodyn. 61, 1-23. https://doi.org/10.1016/0167-6105(96)00042-6
  19. Wu, F., Sarkar, P. P., Mehta, K. C. and Zhao, Z. (2001), "Influence of incident wind turbulence on pressure fluctuations near flat-roof corner", J. Wind Eng. Ind. Aerodyn. 89, 403-420. https://doi.org/10.1016/S0167-6105(00)00072-6
  20. Wu, F., Sarkar, P. P., Mehta, K. C. and Zhao, Z. (2002), "Discussion, Authors' response", J. Wind Eng. Ind. Aerodyn. 90, 131-133. https://doi.org/10.1016/S0167-6105(01)00118-0
  21. Xu, Y. L. (1995), "Model- and full-scale comparison of fatigue-related characteristics of wind pressures on the Texas Tech Building", J. Wind Eng. Ind. Aerodyn. 58, 147-173. https://doi.org/10.1016/0167-6105(95)00012-7

Cited by

  1. Wind-tunnel investigation of point pressure on TTU test building vol.94, pp.7, 2006, https://doi.org/10.1016/j.jweia.2006.01.019
  2. Stationary vortices attached to flat roofs vol.98, pp.1, 2010, https://doi.org/10.1016/j.jweia.2009.09.001
  3. Peak pressures on low rise buildings: CFD with LES versus full scale and wind tunnel measurements vol.30, pp.1, 2020, https://doi.org/10.12989/was.2020.30.1.099