Considerações sobre projeto de nós de pórtico de concreto armado

Abstract

The increasing complexity of reinforced concrete structures demands a careful analysis of critical regions such as beam-column joints, whose structural response can significantly compromise the overall performance of the building. In this context, the present study aims to analyze the stress behavior and discuss the main design considerations applicable to beamcolumn joints in reinforced concrete structures. The methodology involved an in-depth literature review and the analysis, design, and detailing of four beam-column joints using the Strut-and-Tie Method (STM), based on internal forces extracted from a two-dimensional planar frame. The results highlight the importance of adopting proper modeling criteria for beamcolumn joints, verifying the crushing strength of struts and nodes, and providing adequate reinforcement to resist tensile forces. The main contribution of this work lies in its didactic and technical approach, which emphasizes the importance of a deep understanding of joint behavior, offering insights for future research in the field of structural engineering.