Estudio comparativo del comportamiento sísmico de edificios aporticados de hormigón armado sometidos a diferentes caracterizaciones de demandas sísmicas.

Abstract

In the present work, a comparative analysis of reinforced concrete frame buildings subjected to different seismic demands is carried out, which will be considered according to the city of Quito as a study area, for which probabilistic studies of seismic hazard are used, using the Uniform Hazard Spectrum (UHS), which is characterized by delivering spectral accelerations for different periods with an identical probability of exceedance for the same return period, at the same time the Conditional Mean Spectrum (CMS) is considered as an alternative, which is characterized by delivering more realistic and less conservative predictions of a building's response to a given earthquake (López Jara, 2016), the CMS is adjusted to a given acceleration and for a particular period called the target period, i.e., the CMS will be specific for each system of interest since correlation factors will be used which indicate how the target period is related to the spectral acceleration obtained through the attenuation model governing the study area and the acceleration spectrum of each record. Finally, the buildings will be subjected to the different seismic demands in order to compare the response considering the compliance with the minimum requirements established by the Ecuadorian Construction Standard, as well as the economic feasibility that this would represent.