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以葫芦岛体育馆屋盖为工程背景,进行了缩尺比为1:200的刚性模型同步测压试验,详细研究了该屋盖的平均风荷载和脉动风荷载的分布特征,以及围护结构和承重结构设计风荷载。结果表明:屋盖表面风压以负压为主,在屋盖突起的背风区表现为最大;按规范方法得到的用于围护结构设计的风荷载大于实际的极值风压,建议围护结构设计采用按概率统计方法得到的极值风压进行;通过阵风荷载因子法获得了用于承重结构设计的等效静力风荷载,其值范围为0.01～-0.69kPa,最大负压出现在屋盖突起的背风区。
Taking the roof of Huludao Gymnasium as the engineering background, the synchronous pressure measurement test of rigid model with scale ratio of 1: 200 was carried out. The distribution characteristics of average wind load and fluctuating wind load of the roof were studied in detail. Load-bearing structure design wind load. The results show that the surface pressure of the roof is mainly negative pressure, which is the largest in the leeward area of the protruding roof of the roof. The wind load obtained by the standard method for the design of the retaining structure is greater than the actual extreme pressure. The structural design is based on the extreme pressure obtained by the method of probability and statistics. Equivalent static wind loads for the design of bearing structures are obtained by the gust load factor method. The values range from 0.01 to -0.69 kPa. The maximum negative pressure occurs at Roof protruding leeward area.