Análise de ligações tubulares T com reforço de chapa.

Abstract

The tubular structural profiles have great advantages if associated to the structural and aesthetic behavior, which has had intense use in Europe, Southeast Asia, North America and Australia. However, this type of structure has been used very recently in Brazil. As a news technology, it demands forms of dissemination and implementation in it uses. It also requires more investigation and research papers proving better understanding in its structural behavior. Aiming at a better understanding, this dissertation considers a comparative study of T tubular joints with and without reinforcement, using a parametric and experimental analysis through the joint ultimate strength base on the deformation limit criteria comparing the results with the NBR16239 (2013) requirements. For this work, we have uses Square Hollow Section (SHS) in the chord and in the brace by checking the influence of reinforcement in the connected area on the overall joint behavior. The physical and geometrical nonlinearities were incorporated into the models in order to fully mobilize the joint capacity. The finite element models were developed in Ansys 12.0 software. The results showed that when using the standard requirements for dimensioning links with reinforcement, very conservative values are obtained.