Resistance of Flat-Plate Buildings against Progressive Collapse. II: System Response
Publication: Journal of Structural Engineering
Volume 141, Issue 12
Abstract
Using a macromodeling approach and alternate path method, dynamic and static analyses are performed to assess the progressive collapse resistance of a multistory reinforced concrete flat-plate building lacking structural integrity reinforcement in the slabs. Two loading scenarios, instantaneous removal of an exterior column and interior column, are considered. The dynamic analyses examine the potential of progressive collapse of the building, the dynamic demands on global and local nonlinear deformations, the effects of strain rate in materials, and the development of compressive membrane action. The effectiveness of an energy-based nonlinear static analysis procedure is examined for equivalently estimating the peak dynamic global and local responses caused by sudden column removal. The analyses indicate that older flat-plate buildings are vulnerable to progressive collapse; the combined effects from strain rate and compressive membrane action can significantly increase punching resistance; energy-based nonlinear static analysis can approximate the peak dynamic loading response especially for instantaneous exterior column removal.
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Acknowledgments
This paper is based on work supported by the National Science Foundation under Grant Nos. 1100877 and 1100146. The authors gratefully acknowledge the financial support from the National Science Foundation. The opinions, findings, and conclusions or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsor.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 12 • December 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jun 2, 2014
Accepted: Jan 26, 2015
Published online: Mar 18, 2015
Discussion open until: Aug 18, 2015
Published in print: Dec 1, 2015
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