Acorss-wind Fluctuating Wind Forces of Rectangular Super-tall Buildings. Part Ⅱ: Mathematical Model

TANG Yi;GU Ming;QUAN Yong

Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (6) : 46-49.

PDF(1964 KB)
PDF(1964 KB)
Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (6) : 46-49.
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Acorss-wind Fluctuating Wind Forces of Rectangular Super-tall Buildings. Part Ⅱ: Mathematical Model

  • TANG Yi1,2;GU Ming1;QUAN Yong1
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Abstract



The basic characteristics of across-wind fluctuating wind forces acting on rectangular super-tall buildings have been described in PartⅠof the series of papers. In present paper, mathematical model of across-wind fluctuating wind forces are investigated based on the results shown in PartⅠof the papers. Using the nonlinear least-squares method, formulas for the RMS force coefficients, vertical correlations and power spectrum densities (PSDs in short) are fitted as the functions of side ratio of building cross-section and terrain category condition. By comparison with the original test results, the precision of the present formulas are finally verified. These formulas for the across-wind fluctuating wind forces could be applied to wind resistance design of rectangular super-tall buildings.

Key words

Rectangular Super-tall Building / Wind tunnel test / Across-wind fluctuating force / Mathematical modeld:

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TANG Yi;GU Ming;QUAN Yong. Acorss-wind Fluctuating Wind Forces of Rectangular Super-tall Buildings. Part Ⅱ: Mathematical Model[J]. Journal of Vibration and Shock, 2010, 29(6): 46-49
PDF(1964 KB)

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