Galpão industrial em estrutura metálica: comparação entre pórtico contraventado e não contraventado com utilização de programa computacional

Abstract

The use of bracing systems in steel structures plays a fundamental role in global stability and the optimization of steel consumption, being frequently employed as a strategy to increase structural stiffness and reduce construction costs. In this context, this study presents a comparative analysis between a braced steel industrial building and an unbraced steel industrial building, using the CYPE 3D software as a tool for structural modeling and design. The study was based on the development of a steel building composed of built-up welded sections, with a length of 42 meters and a 20-meter clear span, subjected to permanent and variable loads, with special emphasis on wind loads determined according to the applicable design standards. The methodology consisted of modeling two geometrically identical structural configurations, differing only in the presence of the bracing system, thus enabling a direct comparative analysis between the two models. The results revealed significant differences in structural behavior, with the unbraced model presenting greater horizontal displacements and higher steel consumption, demonstrating the influence of the bracing system on the global stability and structural efficiency of the building. Therefore, it can be concluded that the adoption of a bracing system significantly contributes to structural performance and to the optimization of steel consumption in steel buildings.