Examinando por Materia "Curvas de capacidad"

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    Correlación entre los índices de sobreesfuerzo y los resultados de un análisis no lineal estático para una estructura de concreto reforzado
    (Universidad EAFIT, 2025) Alzate Sánchez, Augusto; Botero Palacio, Juan Carlos
    Two hypothetical structures of different heights are proposed, designed using moment-resistant reinforced concrete frame structural systems. The dimensions of the structures were selected so that they complied with the normative limits of mezzanine drifts, using the spectrum of design accelerations. In both structures, the exact amount of steel required in the design was installed to ensure that the overstress rates of the structural elements were close to unity and to ensure that demand was equal to capacity. In addition, a static nonlinear analysis was carried out to determine the capacity curve of the structures and the displacements associated with the collapse condition were obtained. Subsequently, the levels of spectral demand were increased for each of the structures under study, so that they reached the collapse displacement, which made it possible to evaluate the overstress indices associated with the failure of the structure. Finally, these values were correlated with the capacity curves. For shorter structures, it was determined that overstress indices greater than a value of 1.9, both in columns and beams, are associated with the collapse of the structure. In the tallest buildings, it was discovered that overstress values close to 1.9 in beams and 1.2 in columns indicate the collapse condition.