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在田径场罩棚的设计中,选择什么样的结构形式,采用多大的风载体型系数及其抗震设计等都是设计人员深为关心的问题。因为罩棚的自重和屋面作法都比较轻,对风荷载比较敏感,结构形式又比较特殊,为求得罩棚的风载体型系数,目前国内外大都采用风洞模型试验的方法。 本文介绍了几种罩棚的结构形式,对罩棚的风洞模型实验结果进行了分析,并介绍了本工程田径场罩棚的抗震计算及其构造要点。
In the design of the track and field shelter, what kind of structural form is selected, how much wind-type coefficient is adopted, and the anti-seismic design etc. are all deeply concerned by the designers. Because the shelter’s weight and roof practices are relatively light, sensitive to wind loads, and structural forms are quite special, in order to obtain the wind carrier type coefficient of shelters, most of the current domestic and foreign methods use wind tunnel model tests. This paper introduces the structure of several shelters, analyzes the experimental results of the wind tunnel model of the shelter, and introduces the seismic calculation and construction points of the track and field shelters for this project.