Field Measurement of Wind Characteristics of Typhoon Chanhom on Shanghai World Financial Center

Abstract:

Based on the measured data of typhoon Chanhom recorded atop Shanghai World Financial Center (494 m), the wind characteristics, such as mean wind speed, turbulence intensities, gust factors, and peak factors were analyzed. Turbulence integral scales were calculated by fitting a general spectral form to the measured wind velocity data. Wind speed spectra were compared with Von Karman spectra by using fitting parameters. It is shown that the correlation between the maximum 10 min mean wind speeds within 1 hr and the 1 hr mean wind speed, as well as that between the maximum 3 s mean wind speeds within 10 min and the 10 min mean wind speeds, both have a good linear relationship; the longitudinal and lateral gust factors are both linear with the turbulence intensities; the longitudinal and lateral turbulence integral scales increase as the mean wind speeds increase; and there exist some differences between the measured wind speed spectra and the Von Karman spectra.