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

  • 제33권5호
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  • Pages.21-28
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  • 2017
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  • 1226-9107(pISSN)
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  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
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강도여유율을 고려한 프리스트레스트 콘크리트 보의 최소전단철근비

Minimum Shear Reinforcement Ratio of Prestressed Concrete Beams Considering Reserved Shear Strength

  • 투고 : 2017.01.11
  • 심사 : 2017.05.02
  • 발행 : 2017.05.30
⟨ 이전 논문 다음 논문 ⟩

초록

The minimum amounts of shear reinforcement for reinforced concrete and prestressed concrete members are specified in code provisions to prevent brittle shear failure, most of which are empirically formulated. In KCI-12, the minimum shear reinforcement ratio for prestressed concrete members is lower than that for reinforced concrete members, which may cause unsafe shear design in some cases. In this study, therefore, shear tests of prestressed concrete members were performed with a key variable of shear reinforcement ratio. Also, shear test results on the prestressed concrete beams that were lightly reinforced in shear were collected from previous studies, which were then used for evaluating the minimum amounts of shear reinforcement specified in KCI-12, considering their reserved shear strength. The analysis results showed that the minimum shear reinforcement requirements for prestressed concrete members specified in KCI-12 are un-conservative in many cases, and thus, this study proposed the minimum shear reinforcement ratio for prestressed concrete members that can ensure a desirable reserved shear strength.

키워드

과제정보

연구 과제 주관 기관 : 한국연재단

참고문헌

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