Three-Dimensional Effects and Collapse Resistance Mechanisms in Steel Frame Buildings
Publication: Journal of Structural Engineering
Volume 140, Issue 8
Abstract
This study investigates the robustness of a seismically designed steel moment frame building using 3-D nonlinear models. Computational simulations are carried out using validated models to investigate building response to loss of internal and external columns as well as columns in lower, middle and upper floors. Studies are conducted to gain insight into the sources of collapse resistance of the prototype building, focusing in particular on the role of composite action between the slab and underlying steel beams and slab membrane action. The simulation results suggest that the prototype building can be more vulnerable to loss of columns in the upper stories than in the lower ones and is particularly vulnerable to loss of interior gravity columns at all floor levels. The role of the slab is quantified and it is shown that it can contribute significantly to the robustness of the structure, but it is a double edge sword that can also be detrimental, especially in the final stages of collapse.
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Acknowledgments
The presented work was supported in part by the Department of Civil and Environmental Engineering at the University of Michigan and the National Science Foundation (NSF) through grant CMMI-0928193. 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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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 140 • Issue 8 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 24, 2012
Accepted: Mar 11, 2013
Published online: Mar 13, 2013
Published in print: Aug 1, 2014
Discussion open until: Oct 20, 2014
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