Fiber-reinforced polymer (FRP) exhibits superior tensile strength and corrosion resistance compared to steel but has a lower elasticity. Recently, researchers have addressed this by proposing composite sections of FRP and concrete. To ensure the intended composite behavior, these FRP–concrete sections should exhibit sufficient stress transfer between the two elements through a shear connection. Herein, various shear connection methods were proposed to improve the composite behavior of glass fiber–reinforced polymer (GFRP) plates and concrete. Through push-out tests, the behavior characteristics of the prepared specimens were analyzed. The findings confirm that an FRP shear key (FSK) with a small cross-section resists high shear stresses, making it suitable for sections vulnerable to damage from bolt drilling. Additionally, combining an FSK with bolts as shear connectors on a GFRP plate proves beneficial in preventing the fracture of the plate and improving the shear resistance.

1. 서 론
2. 전단연결재 실험계획
    2.1 실험변수
    2.2 시험체 구성 및 사용재료
    2.3 가력 및 계측 방법
3. 전단연결재 실험 결과
    3.1 PN
    3.2 PF
    3.3 PB
    3.4 PFB1
    3.5 PFB2
    3.6 실험 결과 종합
4. 결 론
감사의 글
REFERENCES

• 김용재(강원대학교 건설융합학부 부교수) | Kim, Yongjae (Associate Professor, Division of Architecture and Civil Engineering, Kangwon National University, Samcheok, Korea)
• 신정렬(한국철도기술연구원 철도구조연구실 책임연구원) | Shin, Jeongryol (Principal Researcher, Advanced Railroad Civil Engineering Division, Korea Railroad Research Institute, Uiwang, Korea)
• 이안호(한국철도기술연구원 부원장) | Lee, Anho (Vice President, Korea Railroad Research Institute, Uiwang, Korea)
• 문도영(경성대학교 토목공학과 부교수) | Moon, Doyoung (Associate Professor, Department of Civil Engineering, Kyungsung University, Busan, Korea)