Revisión del comportamiento durante el sismo del 16 de abril de 2016 de edificios en hormigón armado afectados por sismos entre 1943 y 1971 en Guayaquil.

Abstract

The purpose of the present work is to review the behavior of reinforced concrete buildings during the earthquake of April 16, 2016 affected by earthquakes between 1943 and 1971 in the city of Guayaquil. In 1999, the buildings of the sample were studied cases in the RADIUS project in which the "Plan for the Management of the Seismic Risk of Guayaquil" was carried out. The current project began with visits to the respective locations of the old buildings to know the general state of the structures, then information was collected from national newspapers and the RADIUS project about the damage registered in the buildings of the sample during the earthquakes that occurred between the years 1943 to 1971 and 2016. The project continued with the determination of the type of soil where the buildings are located and the obtaining of the response spectrum of accelerations and displacements of the 2016 earthquake for the center of Guayaquil. The calculation of site response design spectra for 1 GDL systems, effective drifts, vibration periods and effective seismic resistance reduction factors for the buildings of the sample with respect to the 2016 earthquake was then developed. These analyzes were based on the practical manual for the geological, geotechnical and seismic characterization for the city of Guayaquil and the NEC-15. The results obtained will explain the good performance at the buildings of the sample compared to modern’s construction structures.