Testing and Analysis of Steel and Concrete Beam-Column Assemblies under a Column Removal Scenario
Publication: Journal of Structural Engineering
Volume 137, Issue 9
Abstract
This paper presents an experimental and computational assessment of the performance of steel and reinforced concrete beam-column assemblies under monotonic vertical displacement of a center column, simulating a column removal scenario. The assemblies represent portions of structural framing systems designed as intermediate moment frames (IMFs) and special moment frames (SMFs) for Seismic Design Categories C and D, respectively. The steel IMF and SMF assemblies were designed in accordance with ANSI/AISC 341-02 by using prequalified moment connections specified in FEMA 350. The concrete IMF and SMF assemblies were designed and detailed in accordance with ACI 318-02 requirements. Each full-scale assembly comprises two beam spans and three columns, and downward displacements of the center column are imposed until failure. The study provides insight into the behavior and failure modes of the assemblies, including the development of catenary action. Both detailed and reduced finite-element models are developed, which capture the primary response characteristics and failure modes. Analyses with the reduced models can be executed rapidly without loss of accuracy, facilitating implementation in models of entire structural systems.
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Acknowledgments
The steel assembly tests were carried out at the Engineering Research and Development Center (ERDC) of the U.S. Army Corps of EngineersUSACE, Vicksburg, Michigan, under the supervision of Stephen Robert and Vincent Chiarito. The concrete assembly tests were carried out at the Bowen Laboratory of Purdue University under the direction of Professors Santiago Pujol and Mete Sozen. The steel assembly tests were supported by NISTNIST, ERDC, the Defense Threat Reduction Agency, the U.S. Air Force, and the American Institute of Steel Construction. The concrete assembly tests were supported by NISTNIST and the Department of Homeland Security. Valuable suggestions and review comments from Professors Sashi Kunnath and Sherif El-Tawil in the development of the numerical models are gratefully acknowledged.
Certain commercial software or materials are identified to describe a procedure or concept adequately. Such identification is not intended to imply recommendation, endorsement, or implication by NIST that the software or materials are necessarily the best available for the purpose.
References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 9 • September 2011
Pages: 881 - 892
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Nov 15, 2010
Accepted: Apr 18, 2011
Published online: Apr 20, 2011
Published in print: Sep 1, 2011
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