Análise comparativa de modelos de cargas móveis em pontes

Abstract

This work presentes a comparative analysis between the static forces in the reinforced concrete bridge through tha application of the mobile load present in brazilian standard NBR 7188/2013 and a vehicle convoy, elaborated according to a reduced database of road. The study objective to analyze the influence of the vehicle proposed by the brazilian standard on the desing efforts on the long-span beam of a bridge. For this, it was proposed that the mobile load would act strictly in the same portion of space that the vehicle convoy occupied during the bridge’s transit. To obtain the efforts, it was used the finite element method through three-dimensional modeling provided by Autodesk ROBOT software. In view of the study about the requesting efforts generated for each imposed situation, it was possible to notice that the vehicle convoy presented considerably lower values both for the shear effort, as for the positive bending moment of the in the long-span beam of the bridge.