Wind field and wind pressure characteristics of Beijing Daxing International Airport terminal using field measurements
Large-span spatial structures are typical wind-sensitive structures,and their wind field and wind pressure have strong randomness and spatiotemporal distribution characteristics.Therefore,it is necessary to conduct a comprehensive and systematic study on synchronous measurements of structural wind field and wind pressure characteristics of such structures.Based on the wind speed and wind pressure measurement data of Beijing Daxing International Airport terminal,the wind field and wind pressure characteristics of the terminal roof were studied in this paper,involving the wind field characteristics at different positions of the roof and the relationship between different wind field characteristics.Combining the measured wind field characteristics,the spatiotemporal distribution and non-Gaussian characteristics of wind pressure on the roof were investigated,and the power spectral densities of fluctuating wind speeds and fluctuating wind pressures were compared.The results indicate that there are significant differences in wind field characteristics at different locations on the roof.The mean wind speed is negatively correlated with the turbulence intensity and gust factor,while the turbulence intensity is positively correlated with gust factor.The wind pressure on the roof exhibits complex spatiotemporal distribution characteristics at windward edges and corridor locations where characteristic turbulence is likely to occur.The wind pressure on the majority of the roof area exhibits a non-Gaussian distribution with skewness less than 0 and kurtosis greater than 3,and the power spectral densities of fluctuating wind pressures and fluctuating wind speeds are significantly influenced by the roof characteristic turbulence.
Beijing Daxing International Airportfield measurementwind field characteristicwind pressure distributionnon-Gaussian characteristic
国家科技期刊平台
NSTL
万方数据
