Análise de modelos de cisalhamento para paredes de alvenaria estrutural

Abstract

Structural masonry is an efficient, rational and economical construction system, which has been the subject of several studies aimed at its use in increasingly taller and slender residential buildings. It is observed that there is a certain consensus in the scientific community regarding the determination of the bending efforts acting on a structural masonry wall. However, there is no consolidated model that allows the calculation of shear-resistant forces, although there are several formulations available. In this sense, the present work aims to evaluate the performance of a set of models used to calculate shear-resistant efforts through the comparison between their respective results and those provided by experimental tests extracted from the bibliography that address the topic. Among the results obtained, it was identified that the model proposed by the Brazilian standard is not conservative for partially grouted and unreinforced masonry, overestimating their shear resistance. Among the 13 models evaluated, it can be concluded that the one proposed by Oan and Shrive (2014) was the most conservative, achieving results, in more than 95% of the analyses, in favor of safety, which reinforces its indication for use in design of masonry reinforced in shear.