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带伞形罩的露天体育馆 加拿大多伦多是世界上拥有屋顶可以完全散开的大型体育馆的第一个城市。该体育馆可容纳7万名观众,当风速不超过66千米/小时时,能在20分钟内完全散开屋顶。散开后可使91％的观众台处在露天之下。因此,在明朗天气里,观众能享受到新鲜空气和阳光,而在天气变坏时又不会有被雨淋的麻烦。 原来,该体育馆的拱形屋顶是由4个弓形瓣组成,其中一弓形瓣
Open-air stadium with umbrella cover Toronto, Canada, is the first city in the world to have a large stadium with a roof that can be completely dispersed. The stadium can accommodate 70,000 spectators. When the wind speed does not exceed 66 km/h, it can completely spread out the roof within 20 minutes. After being scattered, 91% of the audience can stand under the open air. Therefore, in bright weather, the audience can enjoy the fresh air and sunlight, and when the weather deteriorates, there will be no trouble with the rain. It turned out that the vaulted roof of the stadium is composed of four bow-shaped petals, one of which is arched