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.

1. 서 론
 2. 섬유시트와 매입형 CFRP Rod를 활용한 R/C 외부보-기둥 접합부의 구조성능 실험
  2.1 매입형 CFRP Rod
  2.2 실험체의 형태 및 변수
  2.3 사용재료 특성
  2.4 실험방법 및 장치
 3. 섬유시트와 매입형 CFRP Rod를 활용한 R/C 외부보-기둥 접합부의 내진성능 평가
  3.1 이력거동 특성
  3.2 파괴형태
  3.3 강도변화 특성
  3.4 강성변화 특성
  3.5 에너지 소산능력
 4. 결 론
 감사의 글
 References

• 하기주(정회원, 경일대학교 건축학부 교수, 사)건설기술정책연구원 원장) | Gee-Joo Ha
• 하영주(정회원, 코리아 E&C(주) 대표) | Young-Joo Ha
• 강현욱(정회원, 경일대학교 건축공학과 박사수료, 사)건설기술정책연구원 연구원) | Hyun-Wook Kang 교신저자