The analysis of load capacity and deflection of reinforced high strength concrete beam
Piotr Smarzewski
Quarterly No. 1, 2013 pages 29-32
DOI:
keywords: finite element method, reinforced concrete, beam, high strength concrete
abstract The article presents the analysis of the load capacity and deflection of a reinforced high strength concrete beam with a low level of reinforcement in the process of static deformation in comparison to experimental data, according to the methodology of determining the parameters for the constitutive model of high strength concrete, based on its ultimate uniaxial compressive strength. Three variants of numerical solutions of the BP-1a beam were presented, which are distinguished by their failure surface. Numerical calculations made with use of the Newton-Raphson method with adaptive descent and the arc length method are verified with test results. The load-deflection relationships for the flexure beam from the experimental data and the finite element analyses are in good agreement up to failure. In all the cases, the differences between the final loads for the model and the ultimate loads for the experimental results are less than 5%.