Análisis estructural en edificaciones con aisladores sísmico.

Abstract

The present research work consists of a nonlinear dynamic analysis of low-, medium-, and high-rise structures, considering the city of Machala as the study area, with a Type D soil classification according to the Ecuadorian Construction Code. For the structural analysis, six seismic records from stations near the epicentre were used, including the earthquakes of 16 April 2016 and 18 March 2023, which had greater magnitudes compared to the others. The structural modelling was carried out using OpenSees software, while data processing was performed in MATLAB. The results indicate that structures without seismic isolators comply with earthquake-resistant design requirements, where beams and columns do not suffer significant damage. In buildings with LRB seismic isolators, these devices effectively dissipate energy, with maximum drifts occurring at the base, along with peak accelerations and displacements. Similarly, beams and columns show no significant damage. Finally, the use of seismic isolators had a positive impact on low-, medium-, and high-rise structures, as it was confirmed that they are effective in reducing demand on structural elements.