大跨体育场馆建筑群风干扰效应数值模拟研究

Numerical simulation of wind interference effect on large-span stadium buildings group

基于CFX10.0软件,采用SST k-ω湍流物理模型,对闽南某大跨体育场馆屋盖结构的风荷载进行数值模拟,并将计算结果与风洞试验数据进行了对比,对比结果显示两者基本吻合,说明了数值模拟在大跨建筑群屋盖结构应用中的可行性;探讨不同相对位置风干扰效应对一场一馆大跨屋盖风荷载的影响,分析一场一馆之间的风致干扰机理,干扰体之间位置关系与形状很大程度上影响了建筑物实际平均风压,干扰因子主要在-4~2之间分布。

Based on CFX10.0 software and SST k-ωturbulence physical model,the wind load of a large-span stadium roof structure in southern Fujian was simulated numerically,and the results were compared with the wind tunnel test data.The comparison results show that the two are basically consistent,which shows the feasibility of numerical simulation in the application of large-span building group roof structure.In response to the influence of wind load on a large-span roof of one building,the mechanism of wind-induced interference between the stadium and gymnasium was analyzed.The location and shape of the interference bodies largely affect the actual average wind pressure of the building,and the interference factors mainly distribute between-4 and 2.