Numerical Estimation for Initial Stiffness and Ultimate Moment of Top-Seat Angle Connections without Web Angle
Publication: Journal of Structural Engineering
Volume 143, Issue 10
Abstract
This paper develops new models predicting the initial stiffness and ultimate moment of top-seat angle connections without web angle (TSACs). The TSACs, bolted to the beam flange and the column flange, are studied to investigate the effect of the material properties of the angle, gauge distance, angle thickness, angle length, rows of bolts, depth of beam, bolt diameter, and thickness of column flange in their moment-rotation behavior. The finite-element method is used to analyze the nonlinear behavior of TSACs. Identical geometric and material properties with previous experiments by others are utilized to verify finite-element models. A more accurate equation for the initial stiffness is suggested, and good agreement between the proposed model and the various test data is shown. The type of collapse mechanisms for TSACs is established. The ultimate moment capacity modified from Kishi and Chen’s equation also is proposed, and it agrees well with the various test data.
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Acknowledgments
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIP) No. 2011-0030040 and No. 2015R1A2A2A01007339.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 10 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Apr 7, 2016
Accepted: May 2, 2017
Published online: Jul 27, 2017
Published in print: Oct 1, 2017
Discussion open until: Dec 27, 2017
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