This study proposes an economically affordable method for retrofitting non-seismic detailed roof reinforced concrete beam-column joints (BCJs). The proposed method presents an innovative arrangement of steel plates designed to delay the propagation of joint shear cracks by externally applying compressive stress to the area surrounding the BCJs. Two full-scale sub-assemblage specimens for each exterior and interior roof BCJ, i.e., control and retrofitted specimens, were subjected to reversed cyclic loading to evaluate the proposed method. The retrofitted specimens displayed a preferable ductile behavior to the corresponding control specimen, with an enhancement in lateral strength by at least 100%. Furthermore, retrofitted specimens dissipated up to 13 times more energy than the control specimen by initiating a plastic hinge on beams or columns. These results indicated the effectiveness of the proposed method in preventing joint shear failure and improving the seismic behavior of roof BCJs.

Abstract
1. 서론
2. 실험개요
    2.1 비보강 실험체 상세
    2.2 보강 실험체 상세
    2.3 재료 강도
    2.4 실험 방법
3. 실험 결과 및 분석
    3.1 비보강 실험체의 파괴양상
    3.2 보강 실험체의 파괴양상
    3.3 하중-변위비 관계
    3.4 에너지소산능력
    3.5 변형능력
4. 결론
감사의 글
References

• 정수현(부경대학교 건축, 소방공학부, 석사과정) | Jeong Su-Hyeon (Division of Architecture and Fire Protection Engineering, Pukyong National University)
• 차야디 요기(부경대학교 건축, 소방공학부, 박사과정) | Cahyadi Yogi (Division of Architecture and Fire Protection Engineering, Pukyong National University)
• 박민재(부경대학교 건축공학과 조교수, 공학박사) | Park Min-Jae (Department of Architectural Engineering, Pukyong National University)
• 이창환(부경대학교 건축공학과 부교수, 공학박사) | Lee Chang-Hwan (Department of Architectural Engineering, Pukyong National University) Corresponding author