Estudo de caso: colapso do edifício real class.

Abstract

The present work aims to evaluate the overall stability of the structure of the Real Class Building, in which it was built in a conventional reinforced concrete system formed by columns, beams and slabs. The building under study collapsed during its construction, when it was already being finished. To assess the Global Stability, the parameters imposed by NBR 6118, the Instability Parameter α and the Coefficient γz were used. The FAVt coefficient was also used, which is for the exclusive use of the CAD / TQS system, and its formulation is based on the γz coefficient, however horizontal displacements due to vertical loads are considered. Wind pressures and maximum displacements at the top of the structure were also assessed. To assist in the analysis and calculations, the commercial software CAD / TQS was used, which is used for structural analysis, dimensioning and detailing of reinforced concrete structures. The software provides more agility and more refined calculations during the realization of the project, but it is up to the food designer engineer and evaluate the results delivered by the program in order to always design safe structures to live in. During the execution of the work it was possible to follow important stages of the realization of a project using software, since the launch of the elements, correction of errors, processing of the structure and the analysis of results. Analyzing the structural design, it can be seen that the location of the pillars was not done in an ideal way, considering the wind actions on the gantry. A proposal was made for a new structural design for the building, in order to solve its instability problem. For that, it was necessary to change the section of some elements such as columns and beams and also add a rigid core to the structure, thus achieving very satisfactory results in relation to the Instability Parameters. From the results obtained, it can be concluded that the structure had a lot of flexibility and was not able to withstand horizontal efforts.