Reforço de pilares de concreto armado através da utilização de perfis metálicos.

Abstract

The present work analyzes the use of metallic profiles in the reinforcement of reinforced concrete columns, through a more detailed study on this reinforcement technique, comparing the results obtained from the application of calculation methods studied, in experimental models defined in the existing bibliography. Initially an approach is made on the need for reinforcement in reinforced concrete structures, followed by a research on the different types of pathologies that can affect this type of structures. The following are briefly presented the most used types of reinforcement in reinforced concrete columns, as well as a review of the calculation methods for reinforcement with metal profiles. Thirteen experimental models were defined based on the studied bibliography, as well as three calculation methods, of which two had more than one variation, to define the estimated ultimate compressive failure load of the reinforced column. After analyzing the results, it was concluded that the calculation method proposed by Tarabia and Albakry (2014) is able to have a better approximation of the actual ultimate failure load of a reinforced column with metallic profiles tested in laboratory tests, taking into account the contribution of metal strips used to connect the reinforcing angles, as well as the issue of the reinforcement itself being directly loaded, connected to the beams or slabs, or indirectly loaded, entering into load through the friction with the concrete due to its expansion.