Seismic Performance of Full-Scale FRP Retrofitted Substandard RC Columns Loaded in the Weak Direction

Hamid F. Ghatte; Mustafa Comert; Cem Demir; Alper Ilki

doi:10.4028/www.scientific.net/AMM.847.347

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 847Seismic Performance of Full-Scale FRP Retrofitted...

Seismic Performance of Full-Scale FRP Retrofitted Substandard RC Columns Loaded in the Weak Direction

Abstract:

FRP confinement of sub-standard columns with low quality concrete, light transverse reinforcement and improper reinforcement detailing is widely accepted as an efficient retrofitting strategy. This paper introduces an improved method using carbon fiber reinforced polymers (CFRP) and external steel ties for seismic retrofitting of full-scale rectangular reinforced concrete columns loaded in their weak directions. Three cantilever columns with a cross-sectional aspect ratio of two (600 mm x 300 mm) are tested under constant axial load and reversed cyclic lateral loads. The columns are representative of existing substandard members with characteristics such as low concrete quality, low transverse reinforcement ratio, plain bars and high axial load level. The test results indicate that columns retrofitted with FRP jacketing and external steel ties significantly benefit from the applied retrofit scheme particularly in terms of ductility and energy dissipation. Additionally, the experimental results are compared with the performance predictions of seismic assessment and design documents.

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Periodical:

Applied Mechanics and Materials (Volume 847)

Pages:

347-353

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.847.347

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Online since:

July 2016

Authors:

Hamid F. Ghatte, Mustafa Comert, Cem Demir, Alper Ilki*

Keywords:

Column, Ductility, FRP, Reinforced Concrete, Retrofitting, Seismic, Substandard

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* - Corresponding Author

References

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DOI: 10.4028/www.scientific.net/amm.847.347

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