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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.69 No.1
- 발행연도
- 2019.1
- 수록면
- 1 - 10 (10page)
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초록· 키워드
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In the construction of flat plate slabs, which are widely used for tall buildings but have relatively low flexural stiffness, serviceability problems such as excessive deflections and cracks are of great concern. To prevent excessive deflections at service load levels, current design codes require the minimum slab thickness, but the requirement could be unconservative because it is independent on loading and elastic modulus of concrete, both of which have significant effects on slab deflections. In the present study, to investigate the effects of the construction load of shored slabs, reduced flexural stiffness and moment distribution of early-age slabs, and creep and shrinkage of concrete on immediate and time-dependent deflections, numerical analysis was performed using the previously developed numerical models. A parametric study was performed for various design and construction conditions of practical ranges, and a new minimum permissible thickness of flat plate slabs was proposed satisfying the serviceability requirement for deflection. The proposed minimum slab thickness was compared with current design code provisions and numerical analysis results, and it agreed well with the numerical analysis results.
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참고문헌 (30)
참고문헌 신청
1992 / ACI Committee 209 , Prediction of Creep, Shrinkage, and Temperature Effects in Concrete Structures (ACI 209R-92) / American Concrete Institute
2014 / ACI Committee 318, Building Code Requirements for Structural Concrete and Commentary (ACI 318-14) / American Concrete Institute
2005 / ACI Committee 347, Guide for Shoring/Reshoring of Concrete Multistory Buildings (ACI 347.2R-05) / American Concrete Institute
AIK / 2016 / Korean Building Code / Architectural Institute of Korea
Bischoff, P. H. / 2007 / Effective moment of inertia for calculating deflections of concrete members containing steel reinforcement and fiber-reinforced polymer reinforcement / ACI Struct. J 104(1):68~75
2014 / ACI Committee 318, Building Code Requirements for Structural Concrete and Commentary (ACI 318-14) / American Concrete Institute
2005 / ACI Committee 347, Guide for Shoring/Reshoring of Concrete Multistory Buildings (ACI 347.2R-05) / American Concrete Institute
AIK / 2016 / Korean Building Code / Architectural Institute of Korea
Bischoff, P. H. / 2007 / Effective moment of inertia for calculating deflections of concrete members containing steel reinforcement and fiber-reinforced polymer reinforcement / ACI Struct. J 104(1):68~75
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