Shear behaviour of screw connections in plasterboard sheathed cold- formed steel-framed ceiling diaphragms: experimental and comparative study

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2022-01-09 DOI:10.1080/14488353.2021.1974659
I. Saifullah, E. Gad, Rojit Shahi, John L. Wilson, N. Lam, K. Watson
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Abstract

ABSTRACT In Australian domestic structures, steel framing and sheathing panels are usually connected using screws. The ceiling diaphragm plays an important role in distributing lateral loads to the bracing walls. Shear connection tests could be used to observe the ceiling diaphragm performance without the complexity of testing full-scale isolated diaphragms. In this research, numerous inexpensive tests have been conducted to replicate representative tests to determine the parameters outlining the load-displacement behaviour for the screw connections between cold-formed steel framing members and plasterboard sheathing. All investigations of shear connection tests have focused on monotonic loading testing. These tests are aimed to determine the lower and upper bounds of the load-displacement curves for typical cold-formed steel framing-to-plasterboard screw connections in ceiling diaphragms. Finally, finite element (FE) models were developed by utilising these test results and predicted the performance of full-sized plasterboard-clad cold-formed steel framed ceiling diaphragms under lateral loading.
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石膏板护套冷弯型钢框架天花板横隔梁中螺纹连接的剪切性能:实验与比较研究
摘要在澳大利亚国内结构中,钢框架和盖板通常使用螺钉连接。天花板隔板在向支撑墙分配横向荷载方面发挥着重要作用。剪切连接测试可用于观察天花板隔板的性能,而无需测试全尺寸隔离隔板的复杂性。在这项研究中,已经进行了许多廉价的测试,以复制具有代表性的测试,从而确定冷成型钢框架构件和石膏板护套之间的螺纹连接的荷载-位移行为的参数。剪切连接试验的所有研究都集中在单调荷载试验上。这些试验旨在确定天花板隔板中典型冷弯型钢框架与石膏板螺纹连接的荷载-位移曲线的下限和上限。最后,利用这些试验结果建立了有限元模型,并预测了全尺寸石膏板覆盖冷弯型钢框架天花板隔板在横向荷载作用下的性能。
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CiteScore
3.90
自引率
7.70%
发文量
31
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