Análise não linear de pórticos planos de concreto armado : um estudo de caso

Abstract

Analytical procedures are described for understand the behavior nonlinear of reinforcement concrete structures, with computational models, have been large widespread in behavior study of elements against varied loads. On this context, this dissertation features an case study about experimental investigation involving a frame in large-scale in 1992, by Frank J. Vecchio and Mohamed Basil Emara, comparing the results obtained by them in season, with computational models, at the system Mastan 2 (Matrix Structural Analysis, 2nd Edition), of models of planar frame to physically nonlinear analyses, considering second-order effects. Attached this, sought to analyze second-order effects of frames according to the prerogatives of the Brazilian standard ABNT NBR 6118:2018. This simulation considered the assumptions of the theory of plasticity in reinforced concrete structures, with an evaluation between the results obtained experimentally in real scale and numerical results obtained from the computational model. As an answer, this work showed that a structure must be parametrized as fixed nodes, compared to the linear analysis performed through the Ftool Software, resulting from the z assumptions. The Mastan 2 Software showed a satisfactory result in terms of quantity and location of plastic hinges, compared to the full-scale structure, tested by VECCHIO & EMARA (1992).