Computers and Concrete

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Recommendation for the modelling of 3D non-linear analysis of RC beam tests

  • Sucharda, Oldrich (Faculty of Civil Engineering, VSB-Technical University of Ostrava) ;
  • Konecny, Petr (Faculty of Civil Engineering, VSB-Technical University of Ostrava)
  • Received : 2017.05.16
  • Accepted : 2017.09.11
  • Published : 2018.01.25
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Abstract

The possibilities of non-linear analysis of reinforced-concrete structures are under development. In particular, current research areas include structural analysis with the application of advanced computational and material models. The submitted article aims to evaluate the possibilities of the determination of material properties, involving the tensile strength of concrete, fracture energy and the modulus of elasticity. To evaluate the recommendations for concrete, volume computational models are employed on a comprehensive series of tests. The article particularly deals with the issue of the specific properties of fracture-plastic material models. This information is often unavailable. The determination of material properties is based on the recommendations of Model Code 1990, Model Code 2010 and specialized literature. For numerical modelling, the experiments with the so called "classic" concrete beams executed by Bresler and Scordelis were selected. It is also based on the series of experiments executed by Vecchio. The experiments involve a large number of reinforcement, cross-section and span variants, which subsequently enabled a wider verification and discussion of the usability of the non-linear analysis and constitutive concrete model selected.

Keywords

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