Reliability-Based Design of Force-Controlled Components in Rocking Steel-Braced Frames
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 6, Issue 4
Abstract
Despite the importance of force-controlled components, the implications of their failure to the overall performance of controlled rocking steel braced frames (CRSBFs) have not been examined in prior studies. This paper presents a reliability-based methodology for quantifying the relationship between the response of CRSBF force-controlled components (frame beams, columns, and braces) and system-level performance. Structural response simulation of nonlinear models was used to investigate the relationship between the behavior of CRSBF force-controlled components and system-level performance metrics. Vulnerability- and risk-based assessments of the collapse and unsafe placard trigger (UPT) limit states were performed with and without considering the possibility of force-controlled component failure, using varied ratios of the resistance to the load factors used in the design of CRSBFs. The results of a case study using three-, six-, and nine-story structures showed that force-controlled component failure had a larger influence on collapse safety compared to unsafe placard assignment. For both limit states, the effect of force-controlled component behavior was lesser for taller buildings.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research is supported by National Science Foundation Award no. 1554714.
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Information
Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 6 • Issue 4 • December 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Nov 13, 2019
Accepted: Jun 17, 2020
Published online: Aug 27, 2020
Published in print: Dec 1, 2020
Discussion open until: Jan 27, 2021
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