Reinforced concrete (RC) moment frames are widely used to resist lateral loads associated with wind and earthquakes. However, most older RC moment frames performed poorly against past earthquakes. In moment frames, beam-column connections play a crucial role in system performance. Among the connections, corner connections are more vulnerable because they are restrained by only two beams and are affected most strongly by bidirectional loading. High-performance fiber-reinforced cementitious composites (HPFRCC) were used in previous studies to improve the seismic performance of older beam-column connections. This study aims to evaluate the level of improvement of seismic behavior of older beam-column connections under bidirectional loading after retrofitted with HPFRCC by comparing the seismic behavior of the HPFRCC connections to beam-column connections used in intermediate (IMF) and special moment frames (SMF). Test results revealed that the seismic behavior of the HPFRCC connections was almost close to that of SMF connections.

A B S T R A C T
1. 서 론
2. 실험 계획
    2.1 실험체 상세
    2.2 재료 시험
    2.3 실험체 셋팅 및 가력 계획
3. 실험 결과
    3.1 하중-변위 이력 곡선
    3.2 균열 양상
4. 실험 분석
    4.1 강성 저하 및 에너지 소산
    4.2 손상 지수
    4.3 보의 주철근 변형률과 접합부 전단 변형률
5. 결 론
감사의 글
REFERENCES

• 김수복(한양대학교 건축공학과 대학원생) | Kim Su Bok (Graduate Student, Department of Architectural Engineering, Hanyang University)
• 한상환(한양대학교 건축공학과 교수) | Han Sang Whan (Professor, Department of Architectural Engineering, Hanyang University) Corresponding author