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http://dx.doi.org/10.11112/jksmi.2015.19.2.151

Improvement and Evaluation of Seismic Performance of Reinforced Concrete Exterior Beam-Column Joints Retrofitting with Fiber Reinforced Polymer Sheets and Embedded CFRP Rods  

Ha, Gee-Joo (경일대학교 건축학부, 사)건설기술정책연구원)
Ha, Young-Joo (코리아 E&C(주))
Kang, Hyun-Wook (경일대학교 건축공학과, 사)건설기술정책연구원)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.2, 2015 , pp. 151-159 More about this Journal
Abstract
In this study, experimental research was carried out to evaluate and improve the seismic performance of reinforced concrete beam-column joint regions using strengthening materials (CFRP sheet, AFRP sheet, embedded CFRP rod) in existing reinforced concrete structure. Therefore it was constructed and tested seven specimens retrofitting the beam-column joint regions using such retrofitting materials. Specimens, designed by retrofitting the beam-column joint regions of existing reinforced concrete structure, were showed the stable failure mode and increase of load-carrying capacity due to the effect of crack control at the times of initial loading and confinement of retrofitting materials during testing. Specimens LBCJ-CRUS, designed by the retrofitting of CFRP Rod and CFRP Sheet in reinforecd beam-column joint regions were increased its maximum load carrying capacity by 1.54 times and its energy dissipation capacity by 2.36 times in comparison with standard specimen LBCJ for a displacement ductility of 4 and 7. And Specimens LBCJ-CS, LBCJ-AF series were increased its energy dissipation capacity each by 2.04~2.34, 1.63~3.02 times in comparison with standard specimen LBCJ for a displacement ductility of 7.
Keywords
Embedded CFRP rod; CFRP sheet; AFRP sheet; Beam-column joint; Seismic performance; Retrofitting; Improvement;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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