Análise da estabilidade global de um edifício de múltiplos pavimentos considerando a interação solo-estrutura

Abstract

With the rapid population growth in recent decades, and the consequent need for better use of urban land, the verticalization of buildings has become a worldwide trend. With higher, slimmer and more flexible structures, stability problems have also become more recurrent, leading the engineer to take possession of more refined methods of analysis. Despite the technological evolution, many simplifications are still used in engineering offices, such as the consideration of non-displaceable supports, which suppress the interaction of the soil with the structure, thus distancing themselves from the real behavior of the model. With this in mind, the present work seeks to analyze the effects of soil-structure interaction on the global stability of a multiple floors building. So, with the help of the TQS software and the SISEs module, different calculation models were performed, with the same superstructure, but with different geotechnical conditions, varying soil compositions and SPT indices. Then, the results of the models were compared with each other, such as the stability parameters γz and α, the maximum displacements of the structure, the redistribution of efforts at the base of the columns and the steel consumption. The results showed that the soil-structure interaction significantly affects the stability parameters, since there is a considerable redistribution of the structure's efforts, with the relief or greater loading of the base of the pillars, thus proving the importance of its consideration.