Análise estrutural de um edificação em concreto armado considerando a alvenaria participante

Abstract

This work presents the study and results of comparations, through the method of equivalent diagonals (the most practical way of consideration of the interaction between the masonry and the structure), among the various calculation models of the influence of sealing masonry over the global rigidity of one structure in reinforced concrete structure. Was made one computational analysis on software Ftool of two flat porches, of one hypothetical six-story building, taking in consideration the permanents loads, usage overhead and horizontal forces due the wind action. Based on the national standards among the international standards, the masonry panels are changed for equivalente diagonals (struts), which the widths of influence “W” can be calculated for several ways. In this work, will be presented nine ways of representation, such as Smith (1962), Hendry (1981), CSAS304:2014, ABNT NBR 16868-1:2020, NZS2430-1:1990, Mainstone (1971), ACI 530:2011 and Moreira (2002). The frames when interconnected with the masonry panels and subjected to horizontal actions, transfer these efforts through a compression rod that forms in the masonry panel and changes the structural behavior of the building. The results showed that the masonry panels present a great contribution to the stiffening of the structure, considerably reducing the horizontal displacements. With the presence of openings, this effect can be reduced.