Integrity of Steel Single Plate Shear Connections Subjected to Simulated Column Removal
Publication: Journal of Structural Engineering
Volume 140, Issue 5
Abstract
Steel gravity framing systems, one of the most commonly used structural systems in the United States, have an unknown resistance to collapse when a column suffers damage that compromises its ability to carry gravity loads. One potential mechanism for these flexible systems to arrest collapse is through the development of an alternate load path in a sustained tensile configuration resulting from large vertical deflections. The ability of the system to develop such an alternate load path is partly dependent on the ability of the gravity connections to remain intact after undergoing extreme local deformations. This study experimentally evaluates the resistance of steel gravity connection subassemblages to loading consistent with the removal of an interior column. Characteristic connection behaviors are identified and peak resistance values and connection demands are reported for several different connection configurations. An approach to determine the deformations of fibers, used to discretize the connections, is also proposed that can predict fiber deformations from system displacement. Here, the approach is used to determine the fiber displacements at connection failure.
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Acknowledgments
This research was supported by the American Institute of Steel Construction and the National Science Foundation under Grants CMMI-1000926, CMMI-0969837 and CMMI-1000077. Any opinions, findings, conclusions, and recommendations are those of the authors, and do not necessarily reflect the views of the sponsors.
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© 2013 American Society of Civil Engineers.
History
Received: Apr 9, 2013
Accepted: Aug 29, 2013
Published online: Dec 27, 2013
Published in print: May 1, 2014
Discussion open until: May 27, 2014
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