Design of Bolted Single Shear Lap Connection with Different Thicknesses of Splice Plates
Publication: Journal of Structural Engineering
Volume 146, Issue 3
Abstract
A method based on elastic stability analysis to design bolted single shear lap (SSL) connections, which are traditionally used for hollow structural section (HSS) bracing members, is proposed in this paper. The method includes connections with different lap plate thicknesses. An approximate nonlinear analysis method is also presented to mimic the inelastic buckling and post-buckling response of the connections. These approaches are validated by the existing experimental results of three X-bracing specimens and by the numerical results obtained from nonlinear finite element (FE) analysis. The results show that the design procedure proposed by the current guidelines for the HSS can be improved using the calculated effective length factor of this study. Lastly, a stiffened SSL connection detail is suggested for X-bracings and is assessed through the employed analytical methods. This detail is efficiently able to prevent the formation of the three-hinge buckling mode in SSL connections by omitting one of the involved plastic hinges. By using this detail, the compression strength of the connections is enhanced to a level that is normally demanded by special concentric braced frames (SCBF).
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Acknowledgments
This research was funded by the Canada Research Chair Program (Grant No. 219924) of the Natural Sciences and Engineering Research Council (NSERC) of Canada. The authors highly appreciate the assistance of Alexandre Gélinas, P.Eng, for the amendment of this paper.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 3 • March 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Sep 25, 2018
Accepted: Apr 24, 2019
Published online: Jan 7, 2020
Published in print: Mar 1, 2020
Discussion open until: Jun 7, 2020
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