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An Experimental Study on the Girder-Abutment Connection for the Steel-Concrete Composite Rigid-Frame Bridge Integrated with PS Bars

PS 강봉으로 일체화된 강합성 라멘교의 거더-교대 접합부의 거동에 관한 실험적 연구

  • Lee, Sang-Yoon (Structural Engineering Research Division, Korea Institute of Construction Technology, Dept. Civil and Environmental Engineering, Korea University) ;
  • Ahn, Young-Soo (Structural Division, Hakyong Engineering Co., Ltd.) ;
  • Oh, Min-Ho (Technical Marketing Dept., CableTek Co., Ltd.) ;
  • Chung, Jee-Seung (Dept. of Railroad Civil Engineering, Dongyang University) ;
  • Yang, Sung-Don (Civil Engineering Group, POSCO E&C)
  • 이상윤 (한국건설기술연구원 인프라구조연구실, 고려대학교 사회환경시스템공학과) ;
  • 안영수 ((주)하경엔지니어링 구조부) ;
  • 오민호 (케이블텍(주) 기술영업부) ;
  • 정지승 (동양대학교 철도토목학과) ;
  • 양성돈 (포스코건설 토목부)
  • Received : 2012.03.28
  • Accepted : 2012.06.19
  • Published : 2012.08.31

Abstract

Steel-concrete composite rigid-frame bridge is a type of integral bridge having advantages in bridge maintenance and structural efficiency from eliminating expansion joints and bridge supports, the main problems in bridge maintenance. The typical steel-concrete composite rigid-frame bridge has the girder-abutment connection where a part of its steel girder is embedded in abutment for integrity. However, the detail of typical girder-abutment connection is complex and increases the construction cost, especially when a part of steel girder is embedded. Recently, a new type of bridge was proposed to compensate for the disadvantages of complex details and cost increase. The compensation are expected to improve efficiency of construction by simplifying the construction detail of the girder-abutment connection. In this study, a static load test has been carried out to examine the behavior of the girder-abutment connection using real-scale specimens. The results of the test showed that the girder-abutment connection of proposed girder bridge has sufficient flexural capacity and rebars to control concrete crack should be placed on the top of abutment.

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