【摘要】 为了研究流固耦合对膜结构风压系数的影响规律,利用计算流体动力学(CFD)软件,计算了不同水平风向角双坡屋面的风压系数,并与风洞试验数据进行了比较,进而在考虑流固耦合作用下,研究了膜结构风压系数.结果表明:CFD软件可以预测双坡屋面的风压系数;考虑流固耦合作用后,膜表面风压系数的分布和大小发生变化;膜的初始预应力对风压系数也有影响;随风速增加,膜结构变形模式也发生变化.更多还原

【Abstract】 In this paper,wind pressure coefficients of pitched roofs in different horizontal wind directions are firstly computed by computational fluid dynamics(CFD)software,and then wind pressure coefficients of membrane structures considering fluid structure interaction(FSI)are computed.The results of pitched roofs are compared with those of wind tunnel experiments,and it shows that CFD software can predict wind pressure coefficients of pitched roofs.In addition,the result indicates that FSI has more influence on the distribution and magnitude of wind pressure coefficients;and the prestress can affect wind pressure coefficients of membrane;moreover the deformation pattern of membrane changes when wind velocity increases.更多还原