Comportamento estrutural de ligações tubulares T e KT.

Abstract

The hollow section seamless are widely used in many countries, however, in Brazil, the use of these section was rather limited, being restricted to just the spatial roof. The situation of the Brazilian market began to change due to the increased supply of these section provided by the start of production by V&M do BRASIL in 2000, thus before the novelty of the technology, imposes the need to disseminate and implement the use of section type, and an increased number of research studies to better understand its structural behavior. This study presents a parametric analysis of joints type "KT" and "T", by determining the ultimate strength of the joint obtained by the criterion of deformation limit proposed by several researchers, comparing the results with the requirements of Eurocode 3, Project Brazilian Standard and CIDECT Additionally we proceeded to compare the behavior of the global node number of a truss, with the numerical analysis of the behavior of the isolated node. The joint object of this study are composed of rectangular hollow section (RHS) in the chord and circular hollow section (CHS) on the brace member. The finite element models were developed in the program Ansys 12.0. The non-linearities physical and geometric have been incorporated in the models, to mobilize the full load capacity of the joint. It was concluded among other things for the node of the truss studied in this work, the maximum allowable loading project through the design standards is to promote security when compared with the criterion limit of deformation.