某大型会展中心风洞试验分析

ANALYSIS OF A LARGE CONVENTION AND EXHIBITION CENTER WIND TUNNEL TEST

通过对济南西城会展中心进行风洞试验分析,分别得到了大跨度及高层建筑的风压变化规律。风荷载作用下的连续型大跨屋盖部分的边缘区域由于风的分离效应导致风压系数较大,屋盖中间区域体型系数较小,故对屋面维护结构进行抗风设计时,应对屋盖进行合理的分区,不同区域采用不同的抗风措施;风荷载作用下的高层建筑,由于建筑外侧玻璃幕墙较多,局部风压系数很大,故在玻璃幕墙设计中应予以加强。

Based on the analysis of wind tunnel test on Ji＇nan Western Convention and Exhibition Center, wind pressure variation of long-span and high-rise buildings are obtained, respectively. Then results are showed. Due to the separation effect of wind, the wind pressure coefficient under the action of wind load is larger in the edge area of the large span roof, the shape coefficient of building on the roof of middle region is small, therefore, when the roof maintenance structure is wind resistant design, the roof should be reasonably partitioned and different wind resistant measures are applied in different regions; Because the outside of the building glass curtain wall more, the local wind pressure coefficient of high rise buildings under wind load is very large. Therefore, it should be strengthened in the design of glass curtain wall.