Projeto do pórtico transversal principal de um galpão estruturado em aço

Abstract

The widespread use of steel structures in the construction of warehouses, due to the inherent advantages of this material, motivates an investigation into the design process of steel-framed warehouses and the pursuit of the goal of conceiving, analyzing, and dimensioning the main transverse frame of a commercial warehouse, using full-depth steel profiles. In this context, a comprehensive study is conducted on the design process of steel structures, with the definition of design parameters and the analysis of the frame, starting from the basic architectural design. In detail, the sizing procedures applied to steel structures are presented, aiming to demonstrate results based on studies and Technical Standards. This is done through the development of the engineering project, complemented by a comparison of the steel consumption rates of the adopted solution with the alternative of truss elements, carried out by a metal structure manufacturer. In the development of the frame engineering project, it starts with the analysis of the basic architectural design and the calculation assumptions of ABNT NBR 8800 (ABNT, 2008), presenting data, formulas, and the sizing process, as well as graphical results. In this context, it becomes evident that the sizing and design of steel structures constitute a complex process, composed of analyses, verifications, adjustments, and design considerations that have a direct influence on the product. The efficiency of adopting corbels in the connection between the roof beams and columns is highlighted, as they have proven effective in reducing vertical displacements of the frame, playing a decisive role in the choice of profiles used. In comparison with the steel rate of 10.5 kg/m², referring to the truss frame alternative, the rate of 18.3 kg/m² obtained for the sized frame proved to be considerably high, indicating that in terms of material consumption, the adopted solution may not be the most economical. These results emphasize the importance of knowledge and mastery of design practices and parameters, which, combined with constant technological advancements, provide professionals in the field with greater efficiency and productivity.