DUCTILE-BRITTLE TRANSITION FOR REINFORCED CONCRETE BEAMS: EXPERIMENTAL AND NUMERICAL INVESTIGATION

摘要

A brief presentation is given of the experimental results on RC beams in order to evaluate the scale dependence of plastic rotational capacity, the minimum reinforcement and the existence of transitional phenomena of failure. The experimental investigation was planned in a Round Robin proposed by the ESIS Technical Committee 9 on Concrete; 45 RC beams were tested varying scale, percentage of reinforcement and slenderness. The results presented in this paper concern only one beam geometry, while the attention is focused on the influence of steel percentage. The applied force vs. deflection diagrams are presented together with the experimental load vs. plastic rotation diagrams and compared with the numerical simulations.