The Analysis of Deflections of Pre-stressed Reinforced Concrete Beams Exposed to Short Duration Uniform Loading

The paper presents a theoretical and experimental analysis of deflections of reinforced concrete beams with allowance for discrete cracking. The theoretical part of the investigation is based on nonlinear deformation model, which takes into account nonlinear concrete and reinforcement behavior and the discrete cracking. The methodology for calculating deflections of reinforced concrete beams is introduced as a computational algorithm worked out on the basis of “MathCAD-15” computer system. The numerical modelling of reinforced concrete beams being exposed to short duration uniform loading is shown as a finite element model in PC (program complex) “LIRA SAPR 2014 R3”. Taking into account the results of their theoretical research the authors compare calculation data based on the existing domestic and foreign specification documents with the numerical experiment based upon the authors’ own method.