Numerical Analysis of the Influence of the Parameter of Ductility of Reinforcing Steel on the Behaviour of Single-Span Reinforced Concrete Beams from the Viewpoint of Experimental Investigations

Abstract:

One of the fundamental elements applied in reinforced concrete structures are beams. Depending on the proportion of the dimensions and the way of imposing the load, two fundamental mechanisms of destruction are to be distinguished (brittle destruction caused by shearing the supporting zones or flexural destruction in the zone of the span). The present paper provides the results of the analysis of four reinforced concrete beams with the dimensions 4000×400×200 mm, reinforced with steel of varying ductility. The aim of this analysis was to reflect and to provide more detailed information about the phenomena observed in the course of laboratory investigations. The numerical models were constructed in compliance with the system ANSYS, applying volumetric elements Solid 65 and bars Link 8. In order to determine the relation σ-ε of the steel an isotropic model of strengthening according to Misses was implemented in the system ANSYS. The behaviour of concrete was represented making use of the material model Concrete. The parameters applied in the material models were obtained basing on laboratory tests of materials. The results of calculations have been quoted in the paper, as well as their comparison with the results of investigations carried out in the laboratory.

• Periodical: Applied Mechanics and Materials (Volume 769)
• Pages: 139-144
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.769.139
• Online since: June 2015
• Authors: Mirosław Wieczorek*
• Keywords: Concrete Structures, Flexural Failure, Low Ductility, Numerical Modelling, Shear Failure, Steel with High Ductility

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