Análise estrutural das manifestações patológicas em edificação multifamiliar no município de Santa Maria-RS: estudo de caso

Abstract

This work presents the case study of a multifamily building located in the city of Santa Maria/RS. Its structure is of the mixed type, having an underground floor in reinforced concrete and four floors in structural masonry (ground floor and three types). It is noteworthy that its structure presents a series of pathologies such as concreting nests in the columns, excessive deformations, and, mainly, widespread cracking in the reinforced concrete beams on the ground floor. Thus, this study is intended for structural analysis through the modeling of the structure in the SAP2000 software, whose final objective was to verify the dimensioning of the beams regarding the ELU. It is noteworthy that for the modeling, bar elements were defined for the structural part in reinforced concrete (beams and columns) and shell elements for the slabs and walls in structural masonry. Through the modeling results, the shear forces and bending moment were obtained in the beams that have typical shear cracks in almost all of their totality. From this, it was compared with dimensioning values, noting that most cracked regions overlap those of sharper edges larger than the dimensioning ones, even revealing regions with ruined connecting rods. Furthermore, the areas of steel and arrows were verified, comparing them to the normative limits. Afterwards, an incremental analysis was performed, whose verification resulted in the addition of some risk regions. Thus, it was possible to prove the efficiency of the methods used, as well as assume the results as satisfactory.