Structural Engineering and Mechanics

  • 제22권4호
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  • Pages.419-432
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  • 2006
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

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Behaviors of box-shape steel reinforced concrete composite beam

  • Yang, Chun (Department of Civil Engineering, South China University of Tech.) ;
  • Cai, Jian (Department of Civil Engineering, South China University of Tech.) ;
  • Wu, Yi (Department of Civil Engineering, Guangzhou University) ;
  • He, Jiangang (Guangzhou Civil Architecture Research & Design Institute) ;
  • Chen, Haifeng (Guangzhou Civil Architecture Research & Design Institute)
  • 투고 : 2005.02.14
  • 심사 : 2005.11.08
  • 발행 : 2006.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

Experimental studies on the behaviors of box-shape steel reinforced concrete (SRC) composite beams were conducted. Seven 1:3 scale model composite beams were tested to failure. Each of the beams was simply supported at the ends and two concentrated loads were applied at the one-third span and two-thirds span respectively. Experimental results indicate that the flexural strength can be enhanced when the ratio of flexural reinforcements and flange thickness of the shape steel are increased; the shear strength is enhanced with increase of web thickness of the shape steel. Insignificant effects of concrete in the box-shape steel are found on improving the flexural strength and shear strength of the box-shape SRC composite beams, thus concrete inside the box-shape steel can be saved, and the weight of the SRC beams can be decreased. Shear studs can strengthen the connection and co-work effects between the shape steel and the concrete and enhance the shear strength, but stud design for the composite beams should be further improved. Formulas for flexural and shear strength of the composite beams are proposed, and the calculated results are in good agreement with the experimental results. In general, the box-shape SRC composite beam is a kind of ductile member, and suitable for extensive engineering application.

키워드

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피인용 문헌

  1. Mechanical behaviours and engineering application of steel truss reinforced concrete transfer beam in tall buildings vol.20, pp.6, 2011, https://doi.org/10.1002/tal.589
  2. Experimental study on flexural strength of modular composite profile beams vol.7, pp.1, 2006, https://doi.org/10.12989/scs.2007.7.1.071
  3. Experimental evaluation on the seismic performance of high strength thin-walled composite members accounting for sectional aspect ratio effect vol.9, pp.4, 2006, https://doi.org/10.12989/scs.2009.9.4.367