Avaliação metodológica no dimensionamento de vigas de transição em edifício em concreto armado.

Abstract

In structural engineering, many elements can be calculated in a simplified manner, following the classical principle of Bernoulli, which assumes that the section remains flat after undergoing deformations. However, it is crucial to recognize that this simplification is not always applicable to all structures, potentially requiring the adoption of alternative approaches, such as the model of struts and ties. The study's objective is to dimension a transition beam, a structural solution employed in bordering terrains. To achieve this, the CAD/TQS program and the struts and ties method will be employed. Three buildings were dimensioned, varying the allowable stresses to alternate the dimensions of the footings and, consequently, the lever arm in balance. From these variations, two calculation possibilities emerged: short cantilever and overhanging beam, classified by the relatio between the lever arm and the useful height of the section. It was observed that in models classified as short cantilever, the commercial software showed inconsistencies in the results. Therefore, it became evident that the short cantilever should be dimensioned by the struts and ties method, while for the overhanging beams, the program meets the study's requirements