• 제목/요약/키워드: Prestressed cocnrete

검색결과 1건 처리시간 0.015초

하이브리드 프리스트레스트 프리캐스트 콘크리트 구조시스템의 부모멘트 영역 휨거동 (Flexural Response of Negative Moment Region of Hybrid Prestressed Precast Concrete (HPPC) System)

  • 최승호;황진하;허인욱;김강수;우운택
    • 대한건축학회논문집:구조계
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    • 제34권10호
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    • pp.3-10
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    • 2018
  • 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.