Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Flexural Response of Negative Moment Region of Hybrid Prestressed Precast Concrete (HPPC) System

하이브리드 프리스트레스트 프리캐스트 콘크리트 구조시스템의 부모멘트 영역 휨거동

  • 최승호 (서울시립대학교 건축공학과) ;
  • 황진하 (서울시립대학교 건축공학과) ;
  • 허인욱 (서울시립대학교 건축공학과) ;
  • 김강수 (서울시립대학교 건축학부) ;
  • 우운택 ((주)동양구조안전기술 구조공학시스템연구소)
  • Received : 2018.06.18
  • Accepted : 2018.09.28
  • Published : 2018.10.30
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Abstract

Hybrid Prestressed Precast Concrete System (HPPC system) is a newly developed frame system that can improve the performance of precast concrete (PC) joints by post-tensioning. In particular, the details proposed in this study can reduce the lifting weight of the PC members and eliminate problems caused by cracks in the joints that occur under service loads. This study performed an evaluation on the negative moment performance of full-scaled HPPC girders. The test specimens were cast with or without slabs, with bonded or unbonded tendons, and had different post-tensioned lengths in tensile section. The test results showed that the specimens with slabs had significantly higher stiffness and strength than those without slabs. There were no differences in the flexural behavior between those with bonded or unbonded tendons, and between those with short or long post-tensioned lengths in the negative moment region.

Keywords

Acknowledgement

Supported by : 국토교통과학기술진흥원

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