Numerical Experimentation for the Upgrade of Older-Design Eccentrically Braced Frame
Publication: Practice Periodical on Structural Design and Construction
Volume 26, Issue 4
Abstract
This paper presents a retrofitting method for older-design eccentrically braced frame. Numerical experimentation was carried out for the old designed eccentrically braced frame and the modified versions of that the frame. Compared with a well-designed eccentrically braced frame designed using current seismic provisions, the behavior of the old designed eccentrically braced frame was not desirable. The contribution of the link in plastic dissipation was minimal even after following the criteria of shear link. Plastic dissipation by the frame, the braces, and the beam outside link was undesirably significant. The hysteresis loop was unstable, and significant strength degradation was observed. The structural behavior was improved by introducing the retrofitting measures in such a way that the structural interventions and the disruption to the occupants would be minimal. After modification, the maximum plastic dissipation was contributed by the link portion, as desired. The hysteretic behavior and the plastic dissipation were improved significantly, and the strength degradation was minimized.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
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Published In
Practice Periodical on Structural Design and Construction
Volume 26 • Issue 4 • November 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jan 26, 2021
Accepted: Jun 4, 2021
Published online: Aug 12, 2021
Published in print: Nov 1, 2021
Discussion open until: Jan 12, 2022
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Cited by
- undefined Narayan, Krishna Kant Pathak, Numerical Analysis of Multilevel Eccentric Chevron Braced Frame for Improved Inelastic Behavior, Practice Periodical on Structural Design and Construction, 10.1061/(ASCE)SC.1943-5576.0000647, 27, 1, (2022).