在大气边界层风洞中模拟C类地貌,对缩尺比为1∶80的高层住宅阳台太阳集热器模型进行刚性模型测压试验。首先,对集热器极值风压系数进行概率分析,结果表明太阳集热器极值风压系数的概率模型归属受面板位置、来流风向的影响较小,广义极值分布可较好地描述集热器极值风压系数的概率分布;其次,研究集热器安装倾角、楼层高度、在阳台上的相对位置等参数对集热器极值风荷载的影响规律,结果表明顶部楼层的阳台集热器表现出与中间楼层集热器不同的风荷载特性,各楼层阳台集热器的风荷载作用效应机理与阳台立面明显不同;倾斜安装于阳台立面的集热器最不利极值风压系数与安装倾角变化并不表现为单调关系;最后,基于包络法给出阳台太阳集热器的极值风压系数设计建议取值。
Abstract
Class C geomorphology is simulated in the atmospheric boundary layer wind tunnel, and a rigid model pressure measurement test is carried out on the solar panel model of high-rise apartment’s balconies with a scale ratio of 1∶80. Firstly, a probabilistic analysis of extreme wind pressure coefficient for the panel is carried out. The results show that the selection of the probabilistic model of the panel extreme wind pressure coefficient is less affected by the panel position and the direction of incoming wind. The generalized extreme distribution can be used to describe the probabilistic model of the panel extreme wind pressure coefficient. Secondly, the effects of installation tilt angle, height, location of the panel, different factors on the extreme wind load characteristics for the solar panel are studied. The results showed that there are different wind load characteristics between top floor’s balcony solar panels and middle floors’ solar panels. The mechanism of wind load effect is obviously different from the balcony facade. The most adverse extreme wind pressure coefficient and the change of installation angle do not show a monotony relationship for the panel inclined to the balcony facade. Finally, the design value of the extreme wind pressure coefficient of the balcony solar panel is proposed based on the envelope method.
关键词
风洞试验 /
太阳集热器 /
压力分布 /
高层建筑 /
风效应 /
阳台
Key words
wind tunnel test /
solar collector /
pressure distribution /
high-rise building /
wind effect /
balcony
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基金
国家自然科学基金（51508184）; 湖南省自然科学基金省市联合基金（2021JJ50120）
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