Filipe L.A. Ribeiro
Fragility Assessment of Pre-Northridge Steel Moment Frames using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements
Ribeiro, Filipe L.A.; Barbosa, Andre R.; Neves, Luis C.
Authors
Andre R. Barbosa
LUIS ARMANDO CANHOTO NEVES Luis.Neves@nottingham.ac.uk
Director of Product and Operations
Abstract
Although pre-Northridge earthquake steel moment resisting frame buildings have been shown to be susceptible to brittle connection failures, they still represent a large fraction of the existing steel buildings in the United States of America. In this study, the performance of the 3- and 9-story Los Angeles pre-Northridge SAC buildings are analyzed considering ductile and brittle beam-column connection failures, and their uncertainty. This paper contributes to understanding the influence of uncertainty associated with connections brittle fracture on building interstory deformation capacity and its impact on bias and variability of fragility functions and loss assessment. The results show that considering brittle connections leads to significantly larger drift demands and to higher repair costs, particularly under intense ground shaking. New fragility curve parameters are derived that account for the effect of the uncertainty of the strength and deformation capacity of brittle connections.
Citation
Ribeiro, F. L., Barbosa, A. R., & Neves, L. C. (2019). Fragility Assessment of Pre-Northridge Steel Moment Frames using Finite-Length Plastic Hinge Elements and Concentrated Plasticity Fracture Elements. Computer Modeling in Engineering & Sciences, 120(3), 657-676. https://doi.org/10.32604/cmes.2019.06296
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 10, 2019 |
Online Publication Date | Sep 17, 2019 |
Publication Date | Sep 17, 2019 |
Deposit Date | Jul 23, 2019 |
Journal | Computer Modeling in Engineering & Sciences |
Print ISSN | 1526-1492 |
Electronic ISSN | 1526-1506 |
Publisher | Tech Science Press |
Peer Reviewed | Peer Reviewed |
Volume | 120 |
Issue | 3 |
Pages | 657-676 |
DOI | https://doi.org/10.32604/cmes.2019.06296 |
Keywords | Brittle fracture, Finite-length plastic hinge, Fragility curves, Re pair cost ratio, Welded-flange connections |
Public URL | https://nottingham-repository.worktribe.com/output/2333167 |
Publisher URL | https://www.techscience.com/CMES/v120n3/27517 |
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