| Title |
Improvement and Evaluation of Seismic Performance of Reinforced Concrete Exterior Beam-Column Joints using Hybrid Retrofitting with AFRP Sheets and Embedded FRP Reinforcements |
| Authors |
Ha, Gee-Joo ; Yi, Dong Ryul ; Kang, Hyun-Wook |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.12.35 |
| Keywords |
Reinforced Beam-Column Joint ; Seismic Performance Evaluation ; AFRP Cheet ; Embedded FRP Reinforcement |
| Abstract |
In this study, experimental research was carried out to evaluate the seismic performance of reinforced concrete exterior beam-column joint regions using hybrid retrofitting with AFRP sheets and embedded CFRP reinforcements in existing reinforced concrete building. Therefore it was constructed and tested three 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 RBCJ-SRA3 designed by the retrofitting of AFRP sheets and embedded CFRP reinforcements in reinforced exterior beam-column joint regions were increased its maximum load carrying capacity by 1.86 times and its energy dissipation capacity by 1.65 times in comparison with standard specimen RBCJ for a displacement ductility of 5. |