Structural Engineering and Mechanics

  • 제49권3호
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  • Pages.373-393
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  • 2014
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

FE modeling of inelastic behavior of reinforced high-strength concrete continuous beams

  • Lou, Tiejiong (CEMUC, Department of Civil Engineering, University of Coimbra) ;
  • Lopes, Sergio M.R. (CEMUC, Department of Civil Engineering, University of Coimbra) ;
  • Lopes, Adelino V. (Department of Civil Engineering, University of Coimbra)
  • 투고 : 2012.11.05
  • 심사 : 2013.12.27
  • 발행 : 2014.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

A finite element model for predicting the entire nonlinear behavior of reinforced high-strength concrete continuous beams is described. The model is based on the moment-curvature relations pre-generated through section analysis, and is formulated utilizing the Timoshenko beam theory. The validity of the model is verified with experimental results of a series of continuous high-strength concrete beam specimens. Some important aspects of behavior of the beams having different tensile reinforcement ratios are evaluated. In addition, a parametric study is carried out on continuous high-strength concrete beams with practical dimensions to examine the effect of tensile reinforcement on the degree of moment redistribution. The analysis shows that the tensile reinforcement in continuous high-strength concrete beams affects significantly the member behavior, namely, the flexural cracking stiffness, flexural ductility, neutral axis depth and redistribution of moments. It is also found that the relation between the tensile reinforcement ratios at critical negative and positive moment regions has great influence on the moment redistribution, while the importance of this factor is neglected in various codes.

키워드

참고문헌

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피인용 문헌

  1. Neutral axis depth and moment redistribution in FRP and steel reinforced concrete continuous beams vol.70, 2015, https://doi.org/10.1016/j.compositesb.2014.10.044
  2. FE analysis of short- and long-term behavior of simply supported slender prestressed concrete columns under eccentric end axial loads causing uniaxial bending vol.85, 2015, https://doi.org/10.1016/j.engstruct.2014.12.023
  3. Effect of relative stiffness on moment redistribution in reinforced high-strength concrete beams vol.69, pp.14, 2017, https://doi.org/10.1680/jmacr.15.00499
  4. Redistribution of moments in reinforced high-strength concrete beams with and without confinement vol.55, pp.2, 2015, https://doi.org/10.12989/sem.2015.55.2.379
  5. Numerical modelling of nonlinear behaviour of prestressed concrete continuous beams vol.15, pp.3, 2015, https://doi.org/10.12989/cac.2015.15.3.373
  6. Prediction of Moment Redistribution in Statically Indeterminate Reinforced Concrete Structures Using Artificial Neural Network and Support Vector Regression vol.9, pp.1, 2018, https://doi.org/10.3390/app9010028
  7. A comprehensive FE model for slender HSC columns under biaxial eccentric loads vol.73, pp.1, 2014, https://doi.org/10.12989/sem.2020.73.1.017
  8. Torsional behaviour of high strength concrete beams with spiral reinforcement vol.22, pp.4, 2014, https://doi.org/10.1080/13287982.2021.1962489
  9. Flexural Behavior of Two-Span Continuous CFRP RC Beams vol.14, pp.22, 2021, https://doi.org/10.3390/ma14226746