Experimental investigation of characteristics of torsional wind loads on rectangular tall buildings

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Detail(s)

Original languageEnglish
Pages (from-to)129-145
Journal / PublicationStructural Engineering and Mechanics
Volume49
Issue number1
Publication statusPublished - 10 Jan 2014

Abstract

In order to investigate the characteristics of torsional wind loads on rectangular tall buildings, five models with different rectangular cross-sections were tested in a boundary wind tunnel. Based on the test results, the RMS force coefficients, power spectrum densities as well as vertical correlation functions of torsional wind loads were analyzed. Formulas that took the side ratio as parameters were proposed to fit the test results above. Comparisons between the results calculated by the formulas and the wind tunnel measurements were made to verify the reliability of the proposed formulas. An simplified expression to evaluate the dynamic torsional wind loads on rectangular tall buildings in urban terrain is presented on basis of the above formulas and has been proved by a practical project. The simplified expressions as well as the proposed formulas can be applied to estimate wind-induce torsional response on rectangular tall buildings in the frequency domain. Copyright © 2014 Techno-Press, Ltd. Copyright © 2014 Techno-Press, Ltd.

Research Area(s)

  • Power spectrum density, Rectangular tall buildings, RMS torque coefficients, Torsional wind loads, Vertical correlation function, Wind tunnel test