Simplified Models of Progressive Collapse Response and Progressive Collapse-Resisting Capacity Curve of RC Beam-Column Substructures
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 4
Abstract
Based on analysis of a progressive collapse mechanism, this paper presents a simplified model for static analysis of progressive collapse response of RC beam-column substructures under midspan point loading. The proposed model expresses the load-deflection response directly, and it consists of three stages—beam mechanism stage, transient stage, and catenary mechanism stage. In the model, the influence of the span, the sectional dimension, and the reinforcement of the beam on progressive collapse behavior of substructures can be taken into account. The proposed model is validated by experimental results in literature. Last, progressive collapse-resisting capacity curves of substructures are established based on the energy conservation principle, which establishes a foundation for progressive collapse assessment of RC frame structures.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No. 51208421 and 51271138).
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Published In
Journal of Performance of Constructed Facilities
Volume 28 • Issue 4 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jan 10, 2013
Accepted: Jun 24, 2013
Published online: May 13, 2014
Published in print: Aug 1, 2014
Discussion open until: Oct 13, 2014
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