Progressive Collapse Performance of RC Flat Plate Frame Structures
Publication: Journal of Structural Engineering
Volume 140, Issue 9
Abstract
In collapse-resistant design of structures, understanding primary structural failure-mechanisms and alternative load paths under accidental extreme loads is important. A quasi-static experimental method is used to simulate the sudden loss of a column in a single story concrete flat slab-column structure. In a series of experiments on two identical large-scale models, an interior, exterior, and corner column of the structure were replaced by mechanical jacks during the fabrication of the structure. After application of uniform loads of increasing intensity, the jack representing the lost column was unloaded. In the first model test wherein an interior column was removed, a downward concentrated load was also applied on the upper end of the interior column until the structure collapsed. Elastic behavior, yield-line mechanisms, and compressive and tensile membrane actions in the flat slab-column structure were observed during the collapse tests. The results provide valuable information on the load transfer mechanisms in a flat slab-column structure when critical columns are removed.
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Acknowledgments
The authors would like to acknowledge the financial support provided for this research by the Natural Science Foundation of China (No. 51078133, No. 51178175). Partial support for the third author was provided by Hunan University through the Program of Foreign Experts Scholarship of China.
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Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 9 • September 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Apr 18, 2013
Accepted: Oct 3, 2013
Published online: Apr 9, 2014
Published in print: Sep 1, 2014
Discussion open until: Sep 9, 2014
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