Roof Surface Wind Speed Distributions on Low-rise Buildings
Roof Surface Wind Speed Distributions on Low-rise Buildings
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低层建筑屋顶表面风速分布
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
R. Derickson
中科院分区：
文献类型：
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作者：
L. Cochran;J. Peterka;R. Derickson
在低层建筑物上，造成多孔屋顶膜的小屋顶元素的破坏和破坏性去除，例如瓷砖，木瓦和摇动，在很大程度上受到了在屋顶表面上方存在的治疗平均值和peak峰风速的控制。通过选择性去除大风事件中的覆层元素，已经确定了一些典型的高速区域[参考。 1和2]。通常，这些高速区域靠近屋顶的表面是角或山脊涡流。这项研究努力用稳健的热探针气压计以1:25的比例绘制一些典型房屋几何形状的风隧道中的平均表面风速。在一种配置中，这些数据通过全尺度测量确认。还可以在精选的热膜风格计的选定位置收集一些峰值风速数据。已经研究了倾斜和接近水平的屋顶。在所有几何形状中，都发现局部提高的平均风速高达60％以上的进近流量值...
On low-rise buildings the damage to and destructive removal of small roofing elements forming a porous roof membrane, such as tiles, shingles and shakes, is largely controlled by the heal mean andpeak wind speeds that exist just above the roof surface. Some typical high speed regions have been identified by the selective removal of cladding elements during high wind events [Refs. 1 and 2]. Frequently these high speed regions close to the roof surface are comer or ridge vortices. This study endeavours to map the mean surface wind speeds in the wind tunnel on some typical house geometries at a scale of 1:25 with a robust hot-probe anemometer. In one configuration these data were confirmed by full-scale measurements. Some peak wind-speed data were also collected at selected locations with a highly responsive hot-film anemometer. Both sloped and near-horizontal roofs have been investigated. In all geometries, a locally increased mean wind speed of up to sixty percent above the approach flow value was found fo...