【摘要】 在大气边界层风洞中通过模拟大气边界层风场对广州国际会展中心模型进行风压分布风洞试验.得到了平均风压系数、极小风压系数的等值线图,同时分析了位于高湍流区域的大跨屋盖的平均风压和脉动风压分布特性、相干特性以及相关系数.研究结果表明:负风压主要发生在迎风角区,但在下风向会出现正压力;脉动风压相干性随着频率与距离的增大而减小.更多还原

【Abstract】 A detailed test of the wind pressure distribution of the Guangzhou International Convention & Exhibition Center was carried out in a Boundary Layer Wind Tunnel.The contours of the mean and minimal wind pressure coefficients were presented.The analysis of the characteristics of the mean wind pressure, fluctuating wind pressure,coherence functions and correlation coefficients of the long-span roof structure located in the high turbulence district were conducted.It has been found that high negative pressure occurs on the roof corner on the windward and positive pressure will occur on the leeward,and that the coherence functions of fluctuating pressure decrease when the frequencies and the distance between the two taps increase.The results will be very useful for the design of future long-span roof structures.更多还原