Full-Scale Test of a Steel–Concrete Composite Floor System with Moment-Resisting Connections under a Middle-Edge Column Removal Scenario
Publication: Journal of Structural Engineering
Volume 146, Issue 5
Abstract
To investigate the load-resisting mechanisms and responses of typical steel–concrete composite frames under the progressive collapse scenario, a bay full-scale steel–concrete composite floor system was quasi-statically tested till failure under a middle-edge column removal scenario. The test specimen was extracted from a prototype building, which was designed according to modern design codes. Based on the measured load-deflection response, load-carrying mechanisms, deformation patterns, and failure modes were discussed in detail. The maximum capacity was achieved at a chord rotation angle of 0.163 rad, where the steel girder and the composite slab contributed 19.2% and 80.8% of the total resistance, respectively. The peak resistant load, as a result of the combined catenary and tensile membrane action, is 15.9% higher than that of the flexural action alone. The load-carrying capacity of the test specimen is 5.5 times larger than the ASCE load combination for extraordinary events. The continuous steel deck and moment-resisting beam–column connections have a significant influence on the load-carrying capacity and the deformation capacity of the composite floor system.
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Data Availability Statement
All data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
The research presented in this paper was sponsored by the State Key Laboratory of Diaster Reduction in Civil Engineering (Tongji University) through Grant No. SLDRCE19-A-03 and the Natural Science Foundation of China (NSFC) through Grant No. 51378380. Any opinions, findings, conclusions, and recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 5 • May 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Sep 7, 2018
Accepted: Nov 1, 2019
Published online: Mar 5, 2020
Published in print: May 1, 2020
Discussion open until: Aug 5, 2020
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