Comparativo técnico e análise estrutural entre perfis pultrudados em resina polimérica reforçada com fibra de vidro e perfis em aço ASTM A36

Abstract

The technological advancement and development of civil construction are realities inherent to the progress of society. Every day the construction processes require new methods, possibilities and solutions aiming at better productivity and profitability. In this scenario, composite materials present themselves as a viable and extremely versatile resource for the development of modern and innovative structural solutions. This paper develops an analysis whose objective is the presentation of structural profiles in fiberglass reinforced polymer resin, as well as its comparison with ASTM A36 steel, through the dimensioning of lateral plane trusses in a pipe crossing of the Taquaral stream, in the city of Goiânia. The structural development is based on the use of concepts from General Mechanics, Strength of Materials and Theory of Structures applied to each structural model. The result was a more robust and heavy steel structure and, on the other hand, a lighter option with slightly voluminous fiberglass sections. Despite the similarity of the structural methods both materials compared present extremely dissonant characteristics, but are definitely viable and interesting solutions according to their applications. The analysis contemplates the availability of designers, qualified labor, distribution of inputs, costs, and presentation of both materials in Brazil. From the results it was possible to conclude that both solutions are applicable, reliable, and extremely competitive with other structural models. However, predefinitions are necessary in which both structures present greater viability according to the physical and mechanical characteristics of the materials.