Análise comparativa entre pilares intermediários de concreto armado e pilares mistos tubulares preenchidos de concreto submetidos à compressão axial.

Abstract

The work consists in the dimensioning and comparison between intermediate reinforced concrete columns and composite tubular columns filled with concrete considering that they are subjected to loads ranging from 20 to 120 tons. Initially, a bibliographic review was carried out to list the main procedures required according to the norms, aiming at creating a calculation routine for both types of columns. From this, a basic case study was developed to analyze the columns when subjected to these loads in order to observe the variation of some parameters of the columns such as the cross section area, steel consumption, concrete consumption and own weight for a situation in which it is possible to adopt both construction systems. The dimensioning sought to meet the established criteria and parameters always obeying the normative prescriptions. In the results of the design of reinforced concrete columns, it was possible to observe three models for optimization of the element used, one that benefits the reduction of the cross-sectional area, volume of concrete and own weight, another that favors the reduction of steel consumption and a third that seeks a balance between these parameters. The composite columns were dimensioned in order to optimize their cross-sectional area. Finally, it was observed that the composite columns had the least robust columns among all the dimensioned columns, however the steel consumption was on average twice that of reinforced concrete columns.