Abstract
Large-scale tests of steel gravity framing systems (SGFSs) have shown that the connections are critical to the system integrity when a column suffers damage that compromises its ability to carry gravity loads. When supporting columns were removed, the SGFSs redistributed gravity loads through the development of an alternate load path in a sustained tensile configuration resulting from large vertical deflections. The ability of the system to sustain such an alternate load path depends on the capacity of the gravity connections to remain intact after undergoing large rotation and axial extension demands for which they were not designed. This study experimentally evaluates the performance of steel bolted angle connections subjected to loading consistent with interior column removal. The characteristic connection behaviors are described and the performance of multiple connection configurations are compared in terms of their peak resistances and deformation capacities.
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Acknowledgments
This research was supported by the American Institute of Steel Construction (AISC) and the National Science Foundation under Grant No. CMMI-1000926. The steel wide flange sections used in the experiments were donated by AISC. Any opinions, findings, conclusions, and recommendations are those of the authors, and do not necessarily reflect the views of the sponsors.
Disclaimer
Certain commercial entities, equipment, products, or materials are identified in this document in order to describe a procedure or concept adequately. Such identification is not intended to imply recommendation, endorsement, or implication that the entities, products, materials, or equipment are necessarily the best available for the purpose.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 3 • March 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jan 29, 2015
Accepted: Aug 28, 2015
Published online: Dec 8, 2015
Published in print: Mar 1, 2016
Discussion open until: May 8, 2016
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