Estratégias de modelagem de vigas mistas via ABAQUS®

Abstract

The search for optimized solutions in civil construction industry is a major concern today. The demand for rational use of resources with maximum speed, economy and simplicity is increasing each day. In spite of that, the Brazilian civil construction scenario still suffers from low productivity, poor quality control and high loss rates. For this reason, the use of composite steel-concrete beams is a promising alternative, as it aims to take advantage of the best characteristics of each material. This study was devoted to pursue and discuss strategies for modelling and numerical analysis of composite beams through finite element method (FEM), in order to simulate and predict the behavior of these structural elements and of connection by adherence between steel and concrete, by using the commercial software SIMULIA ABAQUS® version 2017. A literature review was carried out, with the purpose of highlight the relevance of the numerical modelling in the understanding of composite structures. The analysis stage consists in the formulation and validation of composite beams numerical models, which were tested and analyzed in previous studies. The different strategies that were employed were detailed. The obtained results were compared with values from simulations and experiments, proving to be promising in regard of performance and demonstrating that the conceived models were able to estimate the behavior of the analyzed beams in a convincing way. Lastly, a parametrical analysis was carried out with the model that presented the best general response, with the intention of investigate the influence of parameters like coefficient of friction between steel and concrete, thickness of concrete slab and reinforcement ratio.