中文摘要：

为研究参振振型对大跨屋盖结构风致响应和风振系数的影响,根据对某体育馆进行风洞刚性模型测压试验所获得的数据,计算了该体育馆屋盖结构的风致响应及风振系数,进而研究了参与计算的振型数量对于风致响应和风振系数分析结果的影响,并且对比分析了考虑各振型交叉项的CQC法和不考虑振型交叉项的SRSS法时的分析结果,发现是否考虑高阶振型对体育馆屋盖结构的风致响应与风振系数的计算结果有一定的影响,而振型交叉项的影响也不可忽略。

英文摘要：

Based on the wind tunnel test data from the rigid model of a gymnasium roof,the windinduced vibration response and the wind load factor of the gymnasium was calculated The influence of number of modes involved in the calculation on the wind-induced vibration response and wind load factor was researched,and the results of CQC method considering the cross part of each mode and SRSS method not considering the cross part of each mode were analyzed. According to the research,it can be found that,whether considering high-order modes or not has a certain influence on the calculated results of wind-induced vibration response and wind load factor of gymnasium roof structure,and the influence of the cross part of each mode cannot be ignored.