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北辰B5区公建是一体型复杂的大底盘双塔楼建筑,为准确地把握建筑物的风载体型系数和风压值,对其进行了风洞试验。详细介绍了风洞模拟试验的相似条件和试验方法,并给出了不同风向角下建筑的风压分布规律,通过试验得出:两个曲面塔楼结构,其基本呈低层风载荷小、高层风载荷大的特点;在双塔楼内侧相当面积上,由于夹道风的原因,出现了无论何种风向角都为负压的现象;在建筑的各个拐角处,由于气流流动复杂,其风压值一般较其他位置偏大,在结构设计中应予以考虑。
Beichen B5 district public building is a one-piece and complex large-chassis twin-tower building. In order to accurately grasp the wind load coefficient and wind pressure of the building, wind tunnel test was conducted on it. The similar conditions and test methods of wind tunnel simulation are introduced in detail, and the wind pressure distribution of buildings under different wind direction angles is given. The results show that the structure of two curved towers is basically low wind load, high wind A large load on the inside of the twin towers in a considerable area, due to the wind causes the wind, no matter what the wind direction angle is negative pressure phenomenon; at each corner of the building, due to the complexity of the air flow, the general air pressure value Larger than other locations, should be considered in the structural design.