Análise não linear em pórtico planos de concreto armado sob ação vertical e efeitos locais de segunda ordem

Abstract

This report aims to perform the computational modeling of a reinforced concrete planar frame tested in Canada. The comparison analyzes the inelastic behavior of the frame, under vertical actions and second-order local effects. Thus, it is possible to evaluate the software's ability to estimate critical values of rupture, cracks nucleation, deformations and the collapse mechanism through plastic hinges. As a result, a computer simulation showed a good approximation of the load intensity required to plasticize the sections, as well as an equal location of the plastic hinges. Despite this, it presented a distinction in the force x displacement relationship, as it presented a decrease in the stiffness of the sections, more abruptly, while in the experiment it occurred gradually. Finally, the bearing capacity was slightly lower in the computer simulation. Thus, by comparing this result with the critical load of the full-scale model, it can be stated that the computer simulation is in favor of safety.