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Wind and Structures
  Volume 16, Number 6, June 2013 , pages 603-616
DOI: https://doi.org/10.12989/was.2013.16.6.603
 


Empirical formulations for evaluation of across-wind dynamic loads on rectangular tall buildings
Young-Cheol Ha

 
Abstract
    This study is aimed at formulating an empirical equation for the across-wind fluctuating moment and spectral density coefficient, which are needed to estimate the across-wind dynamic responses of tall buildings, as a function of the side ratios of buildings. In order to estimate an empirical formula, wind tunnel tests were conducted on aero-elastic models of the rectangular prisms with various aspect and side ratios in turbulent boundary layer flows. In this paper, criteria for the across-wind fluctuating moment and spectral density are briefly discussed and the results are analyzed mainly as a function of the side ratios of the buildings. Finally, empirical formulas for the across-wind fluctuating moment coefficient and spectral density coefficient according to variation of the aspect ratio are proposed.
 
Key Words
    tall building; across-wind load; aspect ratio; side ratio; fluctuating moment; power spectral density
 
Address
Young-Cheol Ha : Department of Architecture, Kumoh National Institute of Technology, Gumi, South Korea
 

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