某体育场气弹模型风洞试验研究  

THE WIND TUNNEL TEST OF THE AEROELASTIC MODEL OF A STADIUM

作　　者：黄鹏[1] 林华坛 顾明[1] HUANG Peng;LIN Huatan;GU Ming(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《工业建筑》2020年第12期64-68,共5页Industrial Construction

基　　金：国家自然科学基金项目(51678452)。

摘　　要：大跨度体育场屋盖是风敏感性结构,由于气动弹性模型的设计和制作存在较大难度,所以此类结构的气弹模型风洞试验研究较少。以一实际体育场为对象,成功设计并制作了其结构的气动弹性模型,并对其进行了风洞试验,测试了该大跨屋盖结构的气动位移响应随风向角和风速的变化关系。此外,试验还对该气弹模型布置了测压点,对比了气弹模型测压与刚性模型测压结果的区别。结果表明:该大跨度屋盖结构最大位移发生在垂直于来流的位置;结构响应随风速增大而增大,而且风速越大增长率也越高;气弹模型测压对平均风压系数影响不大,但是屋盖的脉动风压系数相比刚性模型测压会增大。The long-span stadium is a wind-sensitive structure.Due to the difficulty in designing and manufacturing the aeroelastic model,there is still little wind tunnel test of such structure.In this paper,an aeroelastic model of a long-span stadium was manufactured and tested in wind tunnel.The effects of wind speed and wind direction on the displacement response were analyzed.In addition,wind pressure of the aeroelastic model were also measured to make a comparison with that of rigid model.The results showed that the maximum displacement of the roof structure occured at the position perpendicular to the wind direction.The displacement response increased with wind speed,the higher the wind speed,the higher the growth rate.It was also found that there was little difference in mean wind pressures between aeroelastic model and rigid model,while the fluctuating wind pressures of aeroelastic model were larger than that of rigid model.

关 键 词：气弹模型 大跨结构 风致响应 风洞试验 风向角 风速 

分 类 号：TU312.1[建筑科学—结构工程]