Modelagem numérica de vigas mistas aço-concreto utilizando conectores de cisalhamento treliçados.

Abstract

The association of steel with concrete in engineering works allows a complementary performance of the characteristics of two materials, enabling the enjoyment of the structural material potential of each material, thus, the steel resisting tensile normal stress and concrete resisting compression normal stress. However, for this composed element works, indeed, as a composite beam it is necessary a synchronous work between the steel profile and the concrete slab, so it is used metallic elements called shear connectors. The connectors aim to restrict the longitudinal slipping and the uplifting between steel beam and concrete slab. Thus, this work presents a three-dimensional numerical model using commercial software in order to simulate structural behavior of composite beams using truss connectors. The numerical model consists in the development of a reduced model with a smaller number of elements and the data processing time that gives satisfactory results compared to those allusive to the complete model for push-out tests defined by EN 1994-1-1: 2011. The results obtained were compared with experimental and numerical values extracted from the literature.