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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.35 No.3
- 발행연도
- 2020.1
- 수록면
- 371 - 384 (14page)
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초록· 키워드
오류제보하기
The steel-concrete double composite girder in the negative flexural region combines an additional concrete slab to the steel bottom flange to prevent the local steel buckling, however, the additional concrete slab may lower down the neutral axis of the composite section, which is a sensitive factor to the tensile stress restraint on the concrete deck. This is actually of great importance to the structural rationality and durability, but has not been investigated in detail yet. In this case, a series of 5.5 m-long composite girder specimens were tested by negative bending, among which the bottom slab configuration and the longitudinal reinforcement ratio in the concrete deck were the parameters. Furthermore, an analytical study concerning about the influence of bottom concrete slab thickness on the cracking and sectional bending-carrying capacity were carried out. The test results showed that the additional concrete at the bottom improved the composite sectional bending stiffness and bending-carrying capacity, whereas its effect on the concrete crack distribution was not obvious. According to the analytical study, the additional concrete slab at the bottom with an equivalent thickness to the concrete deck slab may provide the best contributions to the improvements of crack initiation bending moment and the sectional bending-carrying capacity. This can be applied for the design practice.
목차
등록된 정보가 없습니다.
참고문헌 (20)
참고문헌 신청
AASHTO / 2012 / LFRD bridge design specifications / American Association of State Highway and Transportation Officials
Shiming Chen / 2010 / Numerical investigation of inelastic buckling of steel–concrete composite beams prestressed with external tendons / Thin-Walled Structures 48(3):233~242
Shiming Chen / 2009 / A comparative study of continuous steel–concrete composite beams prestressed with external tendons: Experimental investigation / Journal of Constructional Steel Research 65(7):1480~1489
China National Standard / GB50917-2013. Code for design of steel and concrete composite bridges
Committee of steel structure / 2007 / Standard specification for steel and composite structures (Design edition)
Shiming Chen / 2010 / Numerical investigation of inelastic buckling of steel–concrete composite beams prestressed with external tendons / Thin-Walled Structures 48(3):233~242
Shiming Chen / 2009 / A comparative study of continuous steel–concrete composite beams prestressed with external tendons: Experimental investigation / Journal of Constructional Steel Research 65(7):1480~1489
China National Standard / GB50917-2013. Code for design of steel and concrete composite bridges
Committee of steel structure / 2007 / Standard specification for steel and composite structures (Design edition)
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