Abstract Standing seam metal roofs are one of the most commonly used types of roofs especially because of their additional durability and ease of construction. The performance of such roofs under extreme wind events like hurricanes depends on their structural strength and aerodynamic characteristics. Large-scale experimental testing was performed at the NHERI Wall of Wind Experimental Facility (WOW EF) using a 1:10 scale model of a gable-roof building with double-lok trapezoidal seam roof panels along with eave and rake (gable) attachments. The results showed that the geometric features considerably modify the aerodynamic roof pressures. The standing seams along with both types of attachments reduced the peak suction at roof corners as compared to a bare surface roof by as much as 70% and 45% on an individual tap and area-average basis, respectively. In addition, mean uplift pressure reduction was observed. The power spectral densities of pressure fluctuations at most individual taps were also reduced with the addition of attachments. Also, the correlation between the pressures at different taps was significantly decreased in most cases, resulting in reduced area-averaged pressures due to the effects of the standing seams. However, as shown in a previous full-scale study, wind-induced vibrations can lead to damage of such roofs and thus dynamic effects should be carefully considered for design purposes.

中文翻译：

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屋顶几何细节对立缝金属屋顶空气动力学性能的影响

摘要 直立缝金属屋顶是最常用的屋顶类型之一，特别是因为它们具有额外的耐用性和易于施工。这种屋顶在飓风等极端风事件下的性能取决于它们的结构强度和空气动力学特性。在 NHERI Wall of Wind 实验设施 (WOW EF) 使用 1:10 比例模型的山墙屋顶建筑​​模型进行了大规模实验测试，该山墙屋顶建筑​​具有双乐梯形接缝屋顶板以及屋檐和倾斜（山墙）附件。结果表明，几何特征极大地改变了空气动力学顶板压力。与裸露的表面屋顶相比，立接缝和两种类型的附件减少了屋顶角落的峰值吸力，在单个水龙头和面积平均基础上分别降低了 70% 和 45%，分别。此外，还观察到平均抬升压力降低。随着附件的增加，大多数单个水龙头的压力波动的功率谱密度也降低了。此外，在大多数情况下，不同水龙头的压力之间的相关性显着降低，由于直缝的影响导致面积平均压力降低。然而，如之前的全面研究所示，风致振动会导致此类屋顶损坏，因此在设计时应仔细考虑动力效应。在大多数情况下，不同水龙头的压力之间的相关性显着降低，由于直缝的影响，导致面积平均压力降低。然而，如之前的全面研究所示，风致振动会导致此类屋顶损坏，因此在设计时应仔细考虑动力效应。在大多数情况下，不同水龙头的压力之间的相关性显着降低，由于直缝的影响，导致面积平均压力降低。然而，如之前的全面研究所示，风致振动会导致此类屋顶损坏，因此在设计时应仔细考虑动力效应。