Estudo da capacidade resistente do conector de cisalhamento treliçado reto via método dos elementos finitos

Abstract

The composite structure is a type of constructive method that aims to extract the maximum of the properties of the materials that compose it. For this to be achieved, it is indispensable to ensure the union of the materials that constitute it. In composite steel and concrete beams, it is essential that there is a shear connector to guarantee the integrity of the connection between these two elements, allowing the concrete slab and the steel profile to work together. For designing new connectors and analyzing existing ones, the Push-out test is the main way to study and evaluate a connector. However, these tests are costly, time-consuming and depend on the availability of appropriate machinery. On the other hand, the study of shear connectors through the finite element method provides results in a complete way, at a low operational cost and in an agile way. In order to study an alternative shear connector, this work made use of the ABAQUS software, so that, through the finite element method, the influence of height variation on the resistance capacity of the straight truss connector could be studied. Initially, a three-dimensional model of the push-out test was conceived in order to validate the modeling through experimental tests for the same connector. After validation, the straight lattice connector had its height changed to 90, 110 and 150 mm where it was possible to compare the resistant capacities, analyze the stress distribution in these connectors and the mode of rupture of the connectors.