Wind and Structures

  • 제21권5호
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  • Pages.505-521
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  • 2015
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

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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
⟨ 이전 논문 다음 논문 ⟩

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

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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