Experimental behavior of screwed beam-to-column connections in cold-formed steel frames
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GCEC 2017
Experimental behavior of screwed beam-to-column connections in cold-formed steel frames Mahyar Maali 1 & Merve Sagiroglu 2 & M. Semih Solak 2 Received: 24 January 2018 / Accepted: 16 April 2018 / Published online: 2 May 2018 # Saudi Society for Geosciences 2018
Abstract In this study, a beam-to-column connection in cold-formed steel structure has been examined using self-drilling screw. An experimental study is carried out for the full-scale specimens of the connection. The beam has different thickness to determine the structural behavior of the connection. The behavior of connections is represented by their moment–rotation curve. So, this study focuses on evaluating the moment–rotation curves and whose characteristic values. The aim of the work is also to provide failure mechanism for the connection whose fastener is self-drilling screws. The failures of the connected members and screws are observed in the knee joint configuration. This was performed through cantilever tests of full-scale beam-to-column joints. Experiment results were evaluated by comparing to the results of other experiments with different combination thickness. The experimental results showed that plastic and maximum deformation decreases while maximum moment and stiffness increases when the profile thickness of the beam increased. Keywords Screwed connection . Cold-formed steel . Moment–rotation curves . Beam-to-column connection
Introduction Nowadays, construction technology continues to take within new materials and methods with a great pace. In this context, light construction steel is one of the structure systems produced with galvanized steel cold forming method. Cold-formed steel (CFS) frames mainly differ from hot-rolled steel frames in that various shapes of section can be produced economic, lightness, and easy for prefabrication. It has recently been used as a structure system that shows a good performance in terms of economical and lightness and to eliminate the loss of time to a large extent. Beam-to-column joints affect the behavior of steel buildings. The behavior of joint in design and analysis of structures should specifically be considered This article is part of the Topical Collection on Global Sustainability through Geosciences and Civil Engineering * Merve Sagiroglu [email protected] 1
Gencler Metal Company, Erzurum, Turkey
2
Department of Civil Engineering, Erzurum Technical University, Erzurum, Turkey
because of their effects on the force transfer and on structural deformations. The connections must have the required rigidity to transfer loads and limit building deformation under gravity and lateral forces. Therefore, one of the most important elements in the structural stability of CFS structures is connections. While connections in lowrise buildings do not cause problems in CFS, connections that will provide resistance against vertical and lateral loads as the number of floors increases are among the topics (Sagiroglu and Memari 2015) recently discussed in the world. Structural components or
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