Abstract In prefabricated industrial buildings, damages and collapses may occur under snow loads. If the necessary precautions are not taken, the damage can spread to the whole structure which leads to total collapse. Therefore, it is very crucial for manufacturers to comprehend the nature of the damage and to take necessary precautions to prevent this damage. In this present study, the damages occurred at dapped-end region of prefabricated purlins due to snow load accumulated at the roof and the reasons for these damages were investigated in detail. Pursuant to this goal, comprehensive experimental and numerical studies have been undertaken. 10 specimens with 5 different configurations were tested under four point loading. A novel reinforcement detail and the usage of practical methods used by the manufacturers are selected as main parameters. In all purlins, damages occurred at the dapped-end in shear formation. The experimentally obtained results were compared with field tests and TS9967 design code. It was observed that the specimen with “Z” type of the proposed novel reinforcement exhibited approximately 30% higher load capacity than that of other specimens. Moreover, the numerical analyses were performed in order to determine optimum “Z” type reinforcement for dapped-end purlin beams using finite element methods.

中文翻译：

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由于雪荷载和新型钢筋细节对预制混凝土短端檩条的损坏

摘要 装配式工业建筑在雪荷载作用下可能发生损坏和倒塌。如果不采取必要的预防措施，损坏可能会蔓延到整个结构，从而导致完全倒塌。因此，制造商了解损坏的性质并采取必要的预防措施来防止这种损坏是非常重要的。在目前的研究中，由于屋顶积雪，在预制檩条的短端区域发生了损坏，并详细调查了这些损坏的原因。根据这一目标，进行了全面的实验和数值研究。在四点载荷下测试了具有 5 种不同配置的 10 个试样。选择新颖的加固细节和制造商使用的实用方法作为主要参数。在所有的檩条中，在剪切形成过程中，在短端发生损坏。将实验获得的结果与现场测试和 TS9967 设计规范进行了比较。据观察，具有“Z”型所提出的新型增强材料的试样比其他试样的承载能力高约 30%。此外，还进行了数值分析，以便使用有限元方法确定尖头檩梁的最佳“Z”型钢筋。