典型体育馆屋盖表面平均风压特性及干扰效应风洞试验研究

Wind pressure distribution characteristics and interference effects on long span roof of a typical gymnasium

为了满足沈阳市铁西新区体育馆的抗风安全需要,进行了表面风压分布特性风洞实验研究。详细介绍了试验所采用的主要技术参数和基本的数据处理方法;对比研究了在有、无临近建筑物干扰情况下的体育馆屋盖表面风压分布的等值线图和结构典型测点在不同风向角下的风压变化规律。结果表明,当施扰建筑位于上游时能减小风对体育馆屋盖的升力作用,在平行位置将增加对屋盖的升力作用,在下游时可减少对屋盖的升力作用。

To satisfy the requirement of wind resistance for the Shenyang Tiexi gymnasium,the wind tunnel test for wind pressure distribution was performed.Firstly,the technical parameters used in the test and the basic data processing methods were introduced in detail.Then,the contour curves of mean wind pressures for the most unfavorable conditions,which showed clearly the characteristics of wind pressure distributions on the roof of the structure,and the variations of wind pressure for typical measuring points under different wind angles were given to analysis the effect with and without the interference of the surrounding building.The results showed that the upstream interfering building may decrease the mean wind load on the roof of the gymnasium,so may the downstream interfering building,while the parallel interfering building may increase the load.The conclusions may be used as a reference for analysis of wind induced effect of the similar structures.