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Non-linear analysis of composite steel-concrete beams with incomplete interaction

  • Cas, Bojan (University of Ljubljana, Faculty of Civil and Geodetic Engineering) ;
  • Bratina, Sebastjan (University of Ljubljana, Faculty of Civil and Geodetic Engineering) ;
  • Saje, Miran (University of Ljubljana, Faculty of Civil and Geodetic Engineering) ;
  • Planinc, Igor (University of Ljubljana, Faculty of Civil and Geodetic Engineering)
  • 발행 : 2004.12.25

초록

The flexibility of the connection between steel and concrete largely influences the global behaviour of the composite beam. Therefore the way the connection is modelled is the key issue in its structural analysis. Here we present a new strain-based finite element formulation in which we consider non-linear material and contact models. The computational efficiency and accuracy of the formulation is proved with the comparison of our numerical results with the experimental results of Abdel Aziz (1986) obtained in a full-scale laboratory test. The shear connectors are assumed to follow a non-linear load-slip relationship proposed by Ollgaard et al. (1971). We introduce the notion of the generalized slip, which offers a better physical interpretation of the behaviour of the contact and gives an additional material slip parameter. An excellent agreement of experimental and numerical results is obtained, using only a few finite elements. This demonstrates that the present numerical approach is appropriate for the evaluation of behaviour of planar composite beams and perfect for practical calculations.

참고문헌

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피인용 문헌

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  4. Non-linear analysis of two-layer beams with interlayer slip and uplift 2011, https://doi.org/10.1016/j.compstruc.2011.06.007
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  15. Numerical and experimental analysis of timber composite beams with interlayer slip vol.30, pp.11, 2008, https://doi.org/10.1016/j.engstruct.2008.03.007
  16. Non-linear analysis of side-plated RC beams considering longitudinal and transversal interlayer slips vol.16, pp.6, 2014, https://doi.org/10.12989/scs.2014.16.6.559
  17. Numerical analysis of two-layer beams with interlayer slip and step-wise linear interface law vol.144, 2017, https://doi.org/10.1016/j.engstruct.2017.04.010
  18. Fire analysis of timber composite beams with interlayer slip vol.44, pp.5, 2009, https://doi.org/10.1016/j.firesaf.2009.03.007
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