대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제39권10호
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  • Pages.263-270
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  • 2023
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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하프 프리캐스트 경량골재 콘크리트 일방향 슬래브의 시공하중 거동 평가

Evaluation on Construction Load Behavior of Half Precast One-Way Slab using Lightweight Aggregate Concrete

  • Kwon, Hee-Yong (Dept. of Architectural Engineering, Kyonggi University) ;
  • Yang, Keun-Hyuk (Dept. of Architectural Engineering, Kyonggi University) ;
  • Lee, Hye-Jin (Dept. of Architectural Engineering, Kyonggi University) ;
  • Lee, Yeon-Jung (Dept. of Architectural Engineering, Kyonggi University)
  • 투고 : 2023.08.21
  • 심사 : 2023.09.26
  • 발행 : 2023.10.30
⟨ 이전 논문 다음 논문 ⟩

초록

This study aims to assess the crack resistance and deflection control of half precast lightweight aggregate concrete one-way slabs when subjected to construction loads. The main parameters under consideration were the arrangement of tensile reinforcing bars and the use of micro-steel fibers. The flexural behavior of these slab specimens was assessed under a concentrated top two-point load. The results revealed that all slab specimens ultimately failed due to the concrete crushing in the compression zone, caused by the rapid propagation of flexural cracks. Notably, the flexural crack capacity of half precast one-way slabs reinforced with micro-steel fibers was approximately 2.04 times higher than the moment requirements for construction loads, as calculated by KDS 21 50. Although the moment of inertia for all slab specimens was roughly 15.0% lower than the effective moment of inertia at the limit deflection, as calculated by KDS 14 20, the disparity between the experimental and calculated values diminished as deflection increased. In summary, incorporating micro-steel fibers and prestressing into the half precast slabs increased their flexural crack resistance and stiffness, thereby improving safety against construction loads.

키워드

과제정보

이 연구는 국토교통부/국토교통과학기술진흥원의 지원을 받아 수행되었음(과제번호 RS-2020-KA156177)

참고문헌

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