Abstract
Standing Seam Metal Roofs (SSMRs) are widely used in the construction of industrial buildings, and their structural characteristics are rapidly being changed in order to improve the parameters of heat insulation and waterproofness. However, newly employed SSMRs did not account for a potential structural instability under strong winds by considering the multi-function of SSMRs. In this study, three different types of new SSMRs were chosen as specimens and were used in full-scale experiments, which were performed using the cyclic wind uplift method based on ASTM E1592 regulations. In contrast to a previous study in which the ultimate failure of the roof under wind pressure corresponded to seam line failure due to panel deflection, in this study, the experimental results show that seam separation was induced by a mid-clip rupture. It is verified that the behavior of the mid-clip plays a significant role in the overall performance of SSMRs under wind uplift loading. The objectives of this study were to (i) understand the structural performance and failure mode of new SSMRs under wind uplift pressure, as this condition is closest to reality, and to (ii) quantify the structural sustainability, which can be applied to risk-management practices through the established performance evaluation. It is expected that the present research results may provide future directions for improving the test standards, design guidelines, and risk-management practices.
Highlights
This study addressed the structural performance of three types of Standing Seam
Three types of Standing Seam Metal Roofs (SSMRs) structures were examined to evaluate the sustainability of industrial buildings under strong windstorms
Full-scale experiments involving windinduced roof panel displacement and clip strain measurements were conducted under cyclic wind loading and unloading methods based on the ASTM E1592 regulations
Summary
Climate change is severe; extreme damage is often caused to many industrial buildings by tropical cyclones and severe storms [1]. In the case of tropical cyclones, which account for a large portion of the annual natural disaster damage, damage to buildings makes up the largest proportion of damage, following social infrastructure, and recently, tropical cyclones have caused complex and chain-like occurrences of damage to buildings, leading to secondary disasters. Damage caused by tropical cyclones, accompanied by extremely strong wind and heavy rain on industrial buildings, can cause direct losses that are severely destructive to building structures, as well as indirect losses, such as business interruption due to damages to critical and essential facilities or storage products [2,3,4,5]
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