DOI QR코드

DOI QR Code

Assessment of across-wind responses for aerodynamic optimization of tall buildings

  • Xu, Zhendong (Zhejiang University, College of Civil Engineering and Architecture) ;
  • Xie, Jiming (Zhejiang University, College of Civil Engineering and Architecture)
  • 투고 : 2015.01.20
  • 심사 : 2015.09.20
  • 발행 : 2015.11.25

초록

A general approach of aerodynamic optimization of tall buildings is presented in this paper, focusing on how to best compromise wind issues with other design aspects in the most efficient manner. The given approach is reinforced by establishing an empirical method that can quickly assess the across-wind loads and accelerations as a function of building frequencies, building dimensions, aspect ratios, depth-to-width ratios, and site exposures. Effects of corner modifications, including chamfered corner and recessed corner, can also be assessed in early design stages. Further, to assess the effectiveness of optimization by tapering, stepping or twisting building elevations, the authors introduce a method that takes use of sectional aerodynamic data derived from a simple wind tunnel pressure testing to estimate reductions on overall wind loads and accelerations for various optimization options, including tapering, stepping, twisting and/or their combinations. The advantage of the method is to considerably reduce the amount of wind tunnel testing efforts and speed up the process in finding the optimized building configurations.

키워드

참고문헌

  1. 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
  2. Hayashida, H. and Y. Iwasa (1990), "Aerodynamic shape effects of tall building for vortex induced vibration", J. Wind Eng. Ind. Aerod., 33(1-2), 237-242. https://doi.org/10.1016/0167-6105(90)90039-F
  3. Isyumov, N., Dutton, R. and Davenport, A.G. (1989), "Aerodynamic methods for mitigating wind-induced building motions", Proceedings of the Structures Congress, ASCE.
  4. Irwin, P.A. (2007), "Wind engineering challenges of the new generation of super-tall buildings", Proceedings of the 12th Int. Conf. on Wind Eng., Cairns, Australia.
  5. Kareem, A., Kijewski, T. and Tamura, Y. (1999), "Mitigation of motion of tall buildings with recent applications", Wind Struct., 2(3), 201-251l https://doi.org/10.12989/was.1999.2.3.201
  6. Kwok, K.C.S. (1988), "Effect of building shape on wind-induced response of tall buildings", J. Wind Eng. Ind. Aerod., 28(1-3), 381-390. https://doi.org/10.1016/0167-6105(88)90134-1
  7. Kwok, K.C.S. and Isyumov, N. (1998), "Aerodynamic measures to reduce the wind-induced response of buildings and structures", Proceedings of the Structures Congress, ASCE.
  8. National Standard of China (2012), Load code for the design of building structures GB50009-2012.
  9. Quan, Y. and Gu, M. (2006), "Analytical method of across-wind response and equivalent static wind loads of high-rise buildings", J. Eng. Mech. China (in Chinese), 23(9), 84-88.
  10. Tanaka, H., Tamura, Y., Ohtake, K., Nakai, M. and Kim, Y.C. (2012), "Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations", J. Wind Eng. Ind. Aerod., 107-108, 179-191. https://doi.org/10.1016/j.jweia.2012.04.014
  11. Xie, J. and Irwin, P.A. (2000). "Key factors for torsional wind response of tall buildings", Proceedings of the 2000 Structures Congress, ASCE.
  12. Xie, J. et al. (2009), Wind engineering studies for Shanghai Center Tower, Report of Rowan Williams Davies & Irwin Inc.
  13. Xie, J. (2012), "Aerodynamic optimization in super-tall building designs", Keynotes, Proceedings of the 7th International Colloquium on Bluff Body Aerodynamics and Its Applications, Shanghai, China.
  14. Xie, J. (2014), "Aerodynamic optimization of super-tall buildings and its effectiveness assessment", J. Wind Eng. Ind. Aerod., 130(7), 88-98. https://doi.org/10.1016/j.jweia.2014.04.004
  15. Xie, J. and Xu, Z. (2014), "Improvement of code calculations for across-wind loads", Proceedings of the 23rd National Conference of High-rise Buildings (in Chinese), Guangzhou, China.

피인용 문헌

  1. Across-wind dynamic loads on L-shaped tall buildings vol.23, pp.5, 2016, https://doi.org/10.12989/was.2016.23.5.385
  2. Comparison of aerodynamic coefficients of setback tall buildings due to wind load vol.19, pp.2, 2015, https://doi.org/10.1007/s42107-018-0018-3
  3. Use of modal interference approach (MIA) to reduce wind-induced building motions vol.163, pp.None, 2015, https://doi.org/10.1016/j.engstruct.2018.02.044
  4. Life-cycle-cost optimization for the wind load design of tall buildings equipped with TMDs vol.30, pp.4, 2015, https://doi.org/10.12989/was.2020.30.4.379
  5. Comparative assessment of ASCE 7-16 and KBC 2016 for determination of design wind loads for tall buildings vol.31, pp.6, 2015, https://doi.org/10.12989/was.2020.31.6.575
  6. Large-Eddy Simulation (LES) on the Square and Triangular Tall Buildings to Measure Drag Force vol.2021, pp.None, 2015, https://doi.org/10.1155/2021/6666895