Seismic Response of Multistory Buildings with Self-Centering Energy Dissipative Steel Braces
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Volume 134, Issue 1
Abstract
This paper examines the seismic response of 2-, 4-, 8-, 12-, and 16-story steel framed buildings with self-centering energy dissipative (SCED) bracing members. The structures are assumed to be located in Los Angeles, California. Identical buildings equipped with buckling restrained braces (BRB) are also studied for comparison purposes. Incremental static analysis and nonlinear dynamic analysis under ground motion ensembles corresponding to three hazard levels were performed. The SCED frames generally experienced smaller peak story drifts, less damage concentration over the building height, and smaller residual lateral deformations compared to the BRB system. Higher floor acceleration peaks were observed in the SCED frames due to the sharper transitions between elastic and inelastic response assumed in the analysis. The study also indicated that higher design seismic loads may be needed for low-rise SCED and BRB frames in order to improve their collapse prevention performance.
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Acknowledgments
Financial support for this project was provided by the NSERCNatural Sciences and Engineering Research Council of Canada under the Idea to Innovation (I2I) program.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 1 • January 2008
Pages: 108 - 120
Copyright
© 2008 ASCE.
History
Received: Jul 18, 2005
Accepted: Sep 19, 2006
Published online: Jan 1, 2008
Published in print: Jan 2008
Notes
Note. Associate Editor: Michael D. Symans
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