Análisis del Comportamiento de Vigas de Hormigón Armado con Modelos de Hormigón Confinado y Sin Confinamiento

Abstract

This research work arises because of the need for accuracy that must there be in designing reinforced concrete structures. A comparison of moment-curvature diagrams for various proposed sections of reinforced concrete beam, using different concrete constitutive models -those who consider the resistance contribution of transverse reinforcement as those who do not-, is shown. In Chapter I the different constitutive models for confined concrete, unconfined concrete and reinforcement steel are described. It details the method of coefficients transformation for calculating the equivalent rectangular diagram for most of the employed models. Additionally, two methods for calculating the moment-curvature diagrams are explained. In Chapter II the range, the hypothesis, variables and objectives of the research are defined. In this part the work is developed, after defining the calculation method, the materials, the sections for analysis, the employed software and the processes used for the calculation of moment-curvature curves. Then the results of the calculations are displayed and the diagrams are plotted. In the third chapter some information, criteria and opinions, obtained through interviews -about constitutive models of materials and methods of moment-curvaturewith experts in designing reinforced concrete structures, are shown. Finally, in Chapter IV, the conclusions reached by calculating and comparing the moment-curvature diagrams with different constitutive models are presented.