Seismic Behavior of Concrete Columns Confined by CFRP and GFRP Jackets

Abstract:

This paper presents experimental results of a series of large-scale reinforced concrete circular and square columns tested under lateral cyclic displacement excursions while simultaneously subjected to constant axial load. All the specimens contained only minimal transverse steel and were then retrofitted with CFRP or GFRP jackets except control specimens. The measured hysteretic loops of the moment vs. curvature and shear vs. deflection relationships are reported for each specimen. It was observed that both CFRP and GFRP wrapping could provide effective confinement and significantly improve the seismic performance of columns. The effectiveness of FRP in enhancing column ductility relates more closely to its tensile strength than stiffness, thus the application of GFRP confinement to concrete columns is promoted due to obtainability and economical concern.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 657-663
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.657
• Online since: September 2013
• Authors: Yu Mei Teng, Ye Tian, James Liu
• Keywords: Concrete Columns, Confinement, Experiment, FRP, Seismic Behavior

References

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