In recent years, the reversed L-shaped perforated shear connector has been developed to mitigate the problem associated with headed stud and Perforbond shear connector and to simulate the simultaneous failure of concrete and shear connector. And FRP perforated shear connector has been applied to composite concrete and FRP module in the FRP-concrete composite bridge deck. The design criterion of the reversed L-shaped and FRP perforated shear connector has not been established yet since the lack of experimental and analytical study results. In this paper, the existing design equations for the Perfobond were briefly discussed and the equation for the prediction of shear resisting capacity of the reversed L-shaped and FRP perforated shear connector was suggested based on the experimental test, FEM analysis, and the existing equation for the Perfobond. The predict results obtained by the suggested equation are compared with the experimental results, the applicability and effectiveness of suggested equation was verified.

강합성교량에서 스터드 전단연결재 및 Perfobond 전단연결재와 관련된 문제를 해결하고, 콘크리트와 전단연결재가 동시에 파괴되도록 유도하기 위해 역 L형 유공판 전단연결재가 개발되었으며, FRP-콘크리트 합성바닥판에서는 FRP의 재료적 특성과 펄트루젼 생산방식을 고려하여 콘크리트와 FRP의 합성방안으로 Perfobond 형 FRP 전단연결재를 적용하고 있다. 이 연구는 기존 강재 Perfobond 전단연결재에 대한 문헌분석, 2면전단실험, 유한요소해석 등의 방법을 통해 역 L형 유공판 전단연결재, FRP 전단연결재에 대한 각각의 강도를 추정할 수 있는 강도평가식을 제안하였고, 제안한 평가식의 결과와 실험결과를 비교하여 타당성을 검증하였다.

Keywords: Shear Connector, Perfobond, Shear Resisting Capacity, Push-out Test, Reversed L-shaped Perforated Shear Connector, FRP Perforated Shear Connector

Keywords: 전단연결재, 퍼포본드, 전단저항성능, 2면전단실험, 역 L형 유공판 전단연결재, FRP 전단연결재