Investigation of Steel Column–Baseplate Connection Details Incorporating Ductile Anchors
Publication: Journal of Structural Engineering
Volume 143, Issue 8
Abstract
It is widely accepted that the behavior of steel column–baseplate connections will profoundly impact the seismic response of steel buildings and other structures. Previous investigations into moment-frame steel column–baseplate connections have focused on the relationship between global metrics such as connection strength and stiffness to basic design parameters such as anchor arrangement and size, baseplate thickness, and column size. However, there is growing recognition that other details, such as the column setting method, baseplate hole size, anchor material selection, and anchor stretch length may significantly affect connection performance. This paper describes nine full-scale connection tests exploring the effects of such details on strength, rotation capacity, and postyield behavior. A comparison of the present with a prior test program on the basis of physical damage evolution and moment-rotation behavior is undertaken. The baseplate setting arrangement and anchor stretch length were found to have the most pronounced impact on the connection cyclic moment-rotation response. Suggestions for connection details that promote connection robustness, ductility, and strength are presented.
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Acknowledgments
Hilti Corporation funded this research with material and technical assistance provided also by Hilti North America. The authors gratefully acknowledge the support of these organizations. The authors would also like to thank Dr. Ulrich Bourgund, Dr. Philipp Grosser, Dr. Roberto Piccinin, Mr. John Silva, and Mr. Matteo Copellini for their input, as well as the staff of the UCSD Powell Laboratories for their assistance during testing. Opinions, findings, and conclusions are those of the authors, and do not necessarily reflect the views of the sponsoring organizations.
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Information
Published In
Journal of Structural Engineering
Volume 143 • Issue 8 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: May 7, 2016
Accepted: Nov 18, 2016
Published online: Mar 29, 2017
Published in print: Aug 1, 2017
Discussion open until: Aug 29, 2017
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