Effects of Detailing on the Cyclic Behavior of Steel Baseplate Connections Designed to Promote Anchor Yielding
Publication: Journal of Structural Engineering
Volume 142, Issue 2
Abstract
This paper presents the results from an experimental investigation into the role that anchor selection, setting arrangement, and stretch length have on the post-yield behavior, rotation capacity, and ultimate strength of column baseplate connections. Eight full-scale column baseplate connections were designed to promote anchor yielding and tested under quasi-static, reversed cyclic loading. The connections utilized cast-in headed bolts, adhesive anchors, undercut anchors, two different types of setting arrangements, and a range of stretch lengths. The performance of the connections was evaluated by comparing their cyclic moment-rotation behavior, kinematics, and physical damage to the connection components. Anchor type, material selection, and the method used to level the column were found to have pronounced impact on the strength and rotation capacity of the connection. Increased stretch length was associated with only moderate increases in connection rotation capacity. In addition, a numerical model is presented and shown to very reasonably capture the salient response characteristics of the various tested connections.
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Acknowledgments
This research was funded by Hilti Corporation. Material and technical assistance were provided by Hilti North America. The authors gratefully acknowledge the support of these organizations. The authors would also like to thank Dr. Ulrich Bourgund and Mr. Robert Bachmann for their input, as well as the staff of the UCSD Powell Laboratories for their assistance during testing. Opinions, findings, and conclusions expressed are those of the authors, and do not necessarily reflect the view of the sponsoring agency.
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Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jun 23, 2014
Accepted: May 28, 2015
Published online: Aug 12, 2015
Discussion open until: Jan 12, 2016
Published in print: Feb 1, 2016
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