大跨悬挑屋盖风压分布风洞试验分析

Wind press distribution characteristics analysis of long-span cantilevered curve roof in wind tunnel test

通过大跨悬挑曲面屋盖刚性模型风洞试验,分析各风向角风压系数均值等值线图及跨中区域时体型系数以确定最不利风向角,研究跨中迎风边缘及顺风测点功率谱及相干特性,最后针对跨中不同位置测点风压概率分布密度特性探讨峰值因子合理取值。

Based on a long span cantilevered roof rigid mode wind tunnel test,the most disadvantage wind direction angle was confirmed by analyzing mean wind pressure coefficient isoline and shape factor of mid-span areas.The PSD and frequency domain coherence of mid-span windward measure points were analyzed,too.Lastly,the peak factor values in different location of mid-span areas were discussed by analyzing probabilities density function of measure points.