Estudo numérico e experimental de paredes de alvenaria nao estruturais reforçadas com armaduras de junta submetidas à flexao no seu plano

Abstract

This work study the behavior of non structural masonry walls with bed joint reinforcement. The work involves an experimental program with small non structural masonry walls submitted to the flexion effort in its plan and constructed with ceramic blocks. The small walls of ceramci blocks (denominated, in this study, as mini-walls) the were analyzed in two situations: without bed joint reinforcement (for reference) and with bed joint reinforcement. During researchs, the arrows were measured in the middle of the mini-walls, cracking degree and the armors' deformations in order to evaluate the improvement of the structural acting with the proposed reinforcement. Parallel to that, the values obtained by experimental tests were analyzed numerically, in the way of being extrapolated the results for private cases and analyzed some singular points of the results for private cases and analyzed some singular points of the mansory walls in real scale. For the accomplishment of this numeric analysis the computacional programa DIANA was used (version 9.1) that uses Finite Element Method (FEM) and as strategy was used the micromodelling. Besides that it was realized a parametric study in order to verify the influence of some properties in the behavor of the mansory wall of sealing with bed joint reinforcement. With the results of these studies (experimental, numeric and parametric), it became possible to realize an analysis of simplified methods of calculus used to define the rate of the and it distribution along the non structural masonry walls when submitted to flexion in its plan - that effort is due to the execessive deformation of the structural elements. From the results, it was observed that the models reinforce with bed joint reinforcement showed an increase in load of initiation of craking, the best behavior in service, greater load carrying capacity and greater deflection at break.