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Seismic strengthening of rectangular reinforced concrete columns using fiber reinforced polymers
Date
2010-04-01
Author
ÖZCAN, OKAN
Binici, Barış
Ozcebe, Guney
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In recent years, fiber-reinforced polymers have been widely utilized to improve the seismic performance of deficient RC columns. In this study, the flexural behavior of CFRP strengthened rectangular RC columns with plain bars and insufficient confining steel was investigated Five specimens, representing a typical deficient building column with poor transverse reinforcement detailing and low concrete strength, were tested under cyclic displacement excursions and constant axial load. The beneficial effect of CFRP anchor dowels and the FRP confinement ratio on the ultimate drift ratio of the specimens was assessed It was found that an increase in the confinement ratio enabled the column to sustain higher ultimate drift capacities for the strengthened columns Furthermore, an appropriate configuration of CFRP anchor dowels resulted in a better seismic behavior compared to the CFRP retrofitted column without any dowels Subsequently. a simplified drift based design equation was proposed for FRP retrofit design of deficient rectangular columns. (C) 2009 Elsevier Ltd All rights reserved.
Subject Keywords
Fiber-reinforced polymer
,
Reinforced concrete column
,
Drift design
URI
https://hdl.handle.net/11511/36153
Journal
ENGINEERING STRUCTURES
DOI
https://doi.org/10.1016/j.engstruct.2009.12.021
Collections
Department of Civil Engineering, Article