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Experimental study of clip angle bolted connection between two cold-formed steel channels
Proceedings of the Institution of Civil Engineers - Structures and Buildings ( IF 1.6 ) Pub Date : 2020-08-21 , DOI: 10.1680/jstbu.18.00134
Vijayakumar Natesan 1 , Mahendrakumar Madhavan 2
Affiliation  

An experimental investigation was conducted to study the load–deflection relationships, ultimate load and behaviour of beam-to-beam cold-formed steel (CFS) channels connected with clip angles using various connection configurations. In total, 24 specimens were tested to determine the optimum aspect ratio of the clip angle leg in order to improve the connection without significant loss of strength under four-point bending. The parameters studied included the aspect ratio of the attached legs of the clip angle and the thickness of the clip angle. The results showed that a distortional buckling mode of failure occurred in either one leg or both legs of the clip angle depending on the clip angle thickness and the aspect ratio of the anchored leg and the loaded leg connected to the CFS channel. Graphs of rotational stiffness against the percentage of ultimate moment were plotted to determine the ductility of the connection. The experimental results from this work indicate that the design equations from a previous study in the literature are slightly conservative at service load and over conservative at ultimate load.

中文翻译:

两个冷弯型钢槽形夹角螺栓连接的试验研究

进行了一项实验研究,以研究通过各种连接配置与夹角连接的梁对梁冷弯型钢(CFS)通道的载荷-挠度关系,极限载荷和行为。总共测试了24个样品,以确定夹角腿的最佳纵横比,以改善连接,而在四点弯曲下强度没有明显损失。研究的参数包括夹角的附加支腿的纵横比和夹角的厚度。结果表明,取决于夹角厚度和连接到CFS通道的锚固支脚和受力支脚的长宽比,在夹角的任一支腿或两支腿中都出现了扭曲屈曲破坏模式。绘制了相对于极限力矩百分比的旋转刚度图,以确定连接的延展性。这项工作的实验结果表明,文献中先前研究的设计方程在使用载荷下稍微保守,而在极限载荷下则保守。
更新日期:2020-08-21
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