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http://dx.doi.org/10.11004/kosacs.2012.3.4.027

Study on Structural Performance of Two Seam Cold-Formed Square CFT Column to Beam Connections with Internal Diaphragm  

Oh, Heon-Keun (Department of Architectural Engineering,University of Seoul)
Kim, Sun-Hee (Department of Architectural Engineering,University of Seoul)
Choi, Young-Hwan (SAMSUNG C&T Corporation)
Choi, Sung-Mo (Department of Architectural Engineering,University of Seoul)
Publication Information
Journal of the Korean Society for Advanced Composite Structures / v.3, no.4, 2012 , pp. 27-37 More about this Journal
Abstract
The construction of a moment connection for a rectangular hollow section (RHS) column and a H-shaped beam is difficult because the RHS is a closed section. When a inner diaphragm is used for such a connection, in general, it is installed after cutting the HSS columns, which results in increased construction work. This paper suggests a new fabrication method to overcome such problems: An inner diaphragm is welded to inside a C-shaped section first, and then a column is fabricated by welding two C-shaped sections. This fabrication method is superior to a classic method in terms of constructibility. An experimental and a numerical study using Ansys 9.0 were performed in order to compare the strength of connections with respect to the presence of concrete, the corner shape of diaphragm, and the axis of loading. The experimental results including initial stiffness and ultimate loads are reported and the analytical results including load transfer mechanism, degree of stress concentration, and strain distribution are also reported.
Keywords
Two Seam; Cold Forming; Internal Diaphragm; Connection; Finite Element Analysis;
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