Estudo do método do espectro de resposta da norma NBR 15421 para a determinação das cargas sísmicas em um edifício de concreto armado de múltiplos pavimentos

Abstract

The study of earthqhakes in buildings has become increasingly evident in Brazil. With the increase in the efficiency of computational analysis, the analysis of complex structures requires a detailed prediction of their behavior, for economic and security reasons. This work seeks to analyze the brazilian standard for earthquakes, the ABNT NBR 15421:2006, highlighting the stages of analysus of earthquake-resistent structures. More specifically, an in-depth analysis is carried out using project spectrum, capable of determining the behavior of the structure considering dynamic inertial forces. Subsequently, the analysis of a structure is carried out considering efforts in the ultimate limit states, under normal and exceptional conditions, presenting comparisons of the combinations and the analyzes obtained with the results.