Estruturas mistas de aço e concreto: análise teórica de vigas mistas compostas por perfis metálicos e lajes treliçadas.

Abstract

The use of composite structures arose from the need for innovation in construction techniques that would meet increasingly bold architectural concepts. Assessing the advantages and disadvantages of the materials that make up the composite structures. We opted for the use of beams in metal profiles, lattice slab and flexible shear connectors. Thus, the relevance of this work is notorious for the fact that this arrangement is unusual and has little technical collection and, at the same time, they are quite common in civil construction in isolation. Therefore, this theoretical study of the structural behavior of the proposed composite beam will be carried out, where the main characteristics of the composite steel-concrete structures will be presented, the mechanical efforts acting in the interface region will be described, presenting the significant factors in its combat (degree of connection and degree of interaction) and the importance of using shear connectors at the interface between materials. As this is a theoretical analysis, the results presented here will be based on the conclusions obtained by other authors, who carried out tests using the same proposed components. It is noteworthy that the purpose of this work is not to dimension a composite structure, but to explain its behavior and propose a good arrangement of the pieces. Thus, it was possible to conclude that, in general, the proposed objectives were achieved. Keywords: Composite structures. Steel beams. Floor system with lattice girder beams. Shear connectors. Theoretical analysis.