ANALISE COMPARATIVA DO PESO TOTAL DA ESTRUTURA DE UM GALPÃO METALICO EM PORTICO DE PERFIL DOBRADO E EM PORTICO DE PERFIL LAMINADO DIMENSIONADOS NO CYPE3D®.

Abstract

Sheds are buildings consisting of structural systems of parallel spaced frames, and can be built in steel or in precast reinforced concrete, and are designed for various purposes: sports, industrial, agricultural, etc. Metal sheds can have several different layouts: doublewater, single-water, twinned with 2 half-waters, twinned with 4 half-waters, etc. The steel is one of the most used materials in structures due to its excellent properties and advantages such as high strength, low weight, almost no generation of material losses, agility in the assembly and disassembly of structures, low labor and other advantages. Metallic sheds are made of metalic frames that have several different models, being the most used: trusses and full-span profiles. The objective of the present work is to compare the weight of steel necessary for the construction of a hypothetical metallic shed considering two different types of frames: Howe style trussed frame with folded profile and Pratt style shear frame with full section profile column. For the analysis two shed projects were developed, being initially defined the shed dimensions that have the same dimensions, the shed layout, the steel to be used, the type of frame, the building occupation definition. For the U profile lattice frame, the choice was for folded steel A-36 and for the U profile lattice frame with double cantilever and HP profile column the steel adopted was rolled A-36. Subsequently, the fixed loads and the variable overload and wind loads that act on the structure during its service life were defined. For wind loading the VisualVentos® software was used. The structures of the sheds to ensure the accuracy of the results were dimensioned and modeled the two sheds in the CYPE3D® software, where they were verified by the software if the structure meets the Ultimate Limit States (ELU) and displacements adopted for the projects following the guidelines of the standards NBR 8800:2008 for folded steel and NBR 14762:2014 for rolled steel