Examinando por Materia "Estructuras de concreto reforzado"

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    Desempeño sísmico de un pórtico de concreto armado equipado con disipadores por fricción, ubicado en zona de amenaza sísmica alta en Colombia
    (Universidad EAFIT, 2023) Hernández Montes, Clímaco Andrés; Jaramillo Fernández, Juan Diego
    Friction dampers are seismic response control devices that dissipate the energy imparted by an earthquake to a structure through the friction between two solid surfaces. In this study, the seismic performance of a reinforced concrete frame located in a high seismic hazard zone in Colombia is evaluated under two specific scenarios: In the first scenario, the frame is analyzed without dampers, and in the second scenario, the frame is analyzed with friction dampers. The structure was previously designed according to the Colombian seismic-resistant construction code (NSR-10). The evaluation is performed in terms of the maximum demands of ductility at the global level for the frame and the local level for beams and columns. To accomplish this, nonlinear time-history analyses of a set of 14 seismic records representative of the seismic hazard were conducted, and it was found that the seismic performance of the frame significantly improved when the dampers were incorporated into the proposed structure for the study, absorbing at least 50% of the seismic energy. As a result, the global ductility demand of the structure decreased by an average of 52.8%, and the ductility demands in the beams and columns decreased by 54.1% and 25.1%, respectively.