Análise comparativa da influência do tipo de apoio entre viga e pilar metálico por modelagem numérica.

Abstract

We can notice that the civil construction market is increasingly competitive and demanding in terms of quality, whether by labor, construction methods or in the materials used for construction. In this context, the use of metallic structures as an alternative to reduce costs, execution time, space occupied by material in the construction sites, among other advantages, stands out. This has increasingly aroused the interest of researchers in the analysis of these structures. This work consists of dimensioning and structural analysis by means of comparative simulations of a gantry for an industrial building in metallic structure with emphasis on the structural element of the column, with variation of the connection support between the column and the truss, with the supports of type supported on the top and supported on the side of the pillar. Was developed a basic case study aiming at the analysis of the pillar element having its connection with the truss beam simply supported and in the second case with lateral support, both subjected to the same loading in order to observe the variation of some parameters such as von Mises stress and total displacement through graphical analysis of color gradients obtained by numerical analysis by modeling. The dimensioning sought to meet the criteria of satisfaction of the last limit states and the service limit states of excessive deformations using the smallest possible sections so that each part meets the proposed requests. In the results it was possible to observe that the pillar that has a connection with the top support type lattice beam had lower values of von Mises stress and total displacement when compared to the lateral type support in all the situations proposed in the ultimate limit states and service limit states. Finally, it was also possible to observe by the color gradient in the meshes generated in the elements, that even in a greater intensity of von Mises tension, as well as in the total displacement, the lateral support can distribute the soliciting efforts more homogeneously in the pillar, thus causing lower concentrations in specific areas of the mesh, being a positive point compared to the top type support.