Steel and Composite Structures

  • 제26권5호
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  • Pages.595-606
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  • 2018
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Deflection calculation method on GFRP-concrete-steel composite beam

  • Tong, Zhaojie (Department of Bridge Engineering, School of Transportation, Southeast University) ;
  • Song, Xiaodong (Department of Bridge Engineering, School of Transportation, Southeast University) ;
  • Huang, Qiao (Department of Bridge Engineering, School of Transportation, Southeast University)
  • 투고 : 2017.10.17
  • 심사 : 2017.12.21
  • 발행 : 2018.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

A calculation method was presented to calculate the deflection of GFRP-concrete-steel beams with full or partial shear connections. First, the sectional analysis method was improved by considering concrete nonlinearity and shear connection stiffness variation along the beam direction. Then the equivalent slip strain was used to take into consideration of variable cross-sections. Experiments and nonlinear finite element analysis were performed to validate the calculation method. The experimental results showed the deflection of composite beams could be accurately predicted by using the theoretical model or the finite element simulation. Furthermore, more finite element models were established to verify the accuracy of the theoretical model, which included different GFRP plates and different numbers of shear connectors. The theoretical results agreed well with the numerical results. In addition, parametric studies using theoretical method were also performed to find out the effect of parameters on the deflection. Based on the parametric studies, a simplified calculation formula of GFRP-concrete-steel composite beam was exhibited. In general, the calculation method could provide a more accurate theoretical result without complex finite element simulation, and serve for the further study of continuous GFRP-concrete-steel composite beams.

키워드

과제정보

연구 과제 주관 기관 : China Communications Construction Company Ltd.

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피인용 문헌

  1. Experimental and analytical study on continuous GFRP-concrete decks with steel bars vol.76, pp.6, 2018, https://doi.org/10.12989/sem.2020.76.6.737
  2. Experimental analysis of shear deficient reinforced concrete beams strengthened by glass fiber strip composites and mechanical stitches vol.40, pp.2, 2018, https://doi.org/10.12989/scs.2021.40.2.267