Wind and Structures

Techno-Press (테크노프레스)
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Interference effects in a group of tall buildings closely arranged in an L- or T-shaped pattern

  • Zhao, J.G. (Department of Civil Engineering, University of Hong Kong) ;
  • Lam, K.M. (Department of Civil Engineering, University of Hong Kong)
  • Received : 2006.12.26
  • Accepted : 2008.01.11
  • Published : 2008.02.25
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Abstract

Interference effects in five square tall buildings arranged in an L- or T-shaped pattern are investigated in the wind tunnel. Mean and fluctuating shear forces, overturning moments and torsional moment are measured on each building with a force balance mounted at its base. Results are obtained at two values of clear separation between adjacent buildings, at half and a quarter building breadth. It is found that strong interference effect exists on all member buildings, resulting in significant modifications of wind loads as compared with the isolated single building case. Sheltering effect is observed on wind loads acting along the direction of an arm of the "L" or "T" on the inner buildings. However, increase in these wind loads from the isolated single building case is found on the most upwind edge building in the arm when wind blows at a slight oblique angle to the arm. The corner formed by two arms of buildings results in some wind catchment effect leading to increased wind pressure on windward building faces. Interesting interference phenomena such as negative drag force are reported. Interference effects on wind load fluctuations, load spectra and dynamic building responses are also studied and discussed.

Keywords

References

  1. Bailey, P. A., and Kwok, K. C. S. (1985), "Interference excitation of twin tall buildings", J. Wind Eng. Ind. Aerodyn., 21, 323-338. https://doi.org/10.1016/0167-6105(85)90043-1
  2. Blessman, J. and Riera, J. D. (1979), "Interaction effects in neighbouring tall buildings", Proceedings of 5th Int. Conf. Wind Engineering, Fort Collins, 381-395.
  3. Buildings Development Department, Hong Kong (BDD) (1983), Code of Practice on Wind Effects, Hong Kong.
  4. Cheng, C. M. and Lin, Y. C. (2005), "Interference effects on the design wind loads of tall buildings", Proceedings of 6th Asia-Pacific. Conf. Wind Engng, Seoul, 586-598.
  5. English, E. C. (1985), "Shielding factors from wind-tunnel studies of mid-rise and high-rise structures", Proceedings of 5th US Nat. Conf. Wind Engng, Lubbock, 4A, 49-56.
  6. English, E. C. and Fricke, F. R. (1999), "The interference index and its prediction using a neural network analysis of wind-tunnel data", J. Wind Eng. Ind. Aerodyn., 83, 567-575. https://doi.org/10.1016/S0167-6105(99)00102-6
  7. Huang, P. and Gu, M. (2005), "Experimental study on wind-induced dynamic interference effects between two tall buildings", Wind Struct., 8(3), 147-161. https://doi.org/10.12989/was.2005.8.3.147
  8. Khanduri, A. C., Stathopoulos, T., and Bedard, C. (1998), "Wind-induced interference effects on buildings . A review of the state-of-art", Eng. Struct., 20(7), 617-630. https://doi.org/10.1016/S0141-0296(97)00066-7
  9. Lam, K. M. and Zhao, J. G. (2006), "Interference effects on wind loads on a row of tall buildings", Proceedings of 4th Int. Sym. on Comput. Wind Engng., Yokohama, 817-820.
  10. Saunders, J. W. and Melbourne, W. H. (1979), "Buffeting effects of upwind buildings", Proceedings of 5th Int. Conf. Wind Engng, Fort Collins, 593-605.
  11. Taniike, Y. (1992), "Interference mechanism for enhanced wind forces on neighbouring tall buildings", J. Wind Eng. Ind. Aerodyn., 42, 1073-1083. https://doi.org/10.1016/0167-6105(92)90114-P
  12. Thepmongkorn, S., Wood, G. S. and Kwok, K. C. S. (2002), "Interference effects on windinduced coupled motion of a tall building", J. Wind Eng. Ind. Aerodyn., 90, 1807-1815. https://doi.org/10.1016/S0167-6105(02)00289-1
  13. Tschanz, A. (1982), "Measurement of total dynamic loads using elastic models with high natural frequencies", Workshop on Wind Tunnel Modeling Criteria and Effects, N.B.S., Gaithersburg, Mass., 1982.
  14. Xie, Z. N. and Gu, M. (2004), "Mean interference effects among tall buildings", Eng. Struct., 26, 1173-1183. https://doi.org/10.1016/j.engstruct.2004.03.007
  15. Xie, Z. N. and Gu, M. (2005), "A correlation-based analysis on wind-induced dynamic interference effects between two tall buildings", Wind Struct., 8(3), 163-178. https://doi.org/10.12989/was.2005.8.3.163
  16. Xie, Z. N. and Gu, M. (2007), "Simplified evaluation of wind-induced interference effects among three tall buildings", J. Wind Eng. Ind. Aerodyn., 95, 31-52. https://doi.org/10.1016/j.jweia.2006.05.003
  17. Zhang, W. J., Kwok, K. C. S. and Xu, Y. L. (1994), "Aeroelastic torsional behaviour of tall buildings in wakes", J. Wind Eng. Ind. Aerodyn., 51, 229-248. https://doi.org/10.1016/0167-6105(94)90006-X

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