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An Experimental Study on Structural Behavior of Segmental Joint in Prestressed Composite Girder

프리스트레스트 강합성거더의 분절 접합부 구조거동에 관한 실험적 연구

  • Lee, Juwon (Technical Institute, SAMHYUN P.F Co.,Ltd.) ;
  • Ha, Taeyul (Technical Institute, SAMHYUN P.F Co.,Ltd.) ;
  • Yang, Inwook (Technical Institute, SAMHYUN P.F Co.,Ltd.) ;
  • Han, Jongwook (Hybrid Structural Testing Center, Myongji Univ.)
  • Received : 2016.09.21
  • Accepted : 2016.12.11
  • Published : 2016.12.31

Abstract

This study was evaluated in the performance of the connection according to the details of the concrete casing segment in the prestressed composite girder by fabricating and testing specimens with different segments. A total of four comparative specimens were fabricated by using the variables of general composite girders, reinforcement or non-reinforcement, and details of reinforcing bars in the segments so as to evaluate the structural behavior of steel girders. In addition, the possibility of non-cracking grade design of segmented composite girders as well as the effects of stiffness and strength according to the loop connection types after cracking were analyzed, and the appropriateness of the crack width control both the embedded steel plate and the concrete surface were evaluated.

본 연구에서는 프리스트레스트 강합성 거더의 콘크리트 케이싱 분절부 상세에 따른 연결부 성능 평가를 위해 각각 다른 분절부를 가진 실험체를 제작하여 실험하였다. 분절부가 없는 일반 강합성 거더와 분절부에 이음철근 보강 유무 및 이음철근 상세를 변수로 하는 총 4본의 비교 실험체를 제작하여 구조적 거동 평가하였다. 또한, 분절형 강합성 거더의 비균열등급 설계 가능 여부 및 균열발생 후 루프철근 상세에 따른 강성과 강도 영향에 대해 분석하고, 매립강판면과 타설접합면에 따른 균열폭 제어 적정성을 평가하였다.

Keywords

References

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