Estudio de peligro sísmico determinista para las estructuras del cantón Ambato - sector Miñarica I

Abstract

In this research project we proceeded to calculate the vibration period for 3 structures located in the study site, which corresponds to an acceleration of gravity Sa (g), taken from the specific spectrum, to compare it with the acceleration spectrum of the NEC-15 and verify the structural behavior of each selected type structure. For this process the following steps were carried out: establish the tectonic regime based on the study area, identification and characterization of all the seismic sources (geological faults) capable of producing a significant ground movement, by means of the standard penetration test was obtained the Nspt to calculate the average speed of the shear wave Vs30 approximated for the type of profile, based on the source-site distance of the study the moment magnitude for each fault is calculated, by means of parameters such as distance to the epicenter, depth focal, soil motion prediction equations were used obtaining acceleration spectra, by means of an envelope of all the acceleration spectra a specific spectrum of maximum accelerations is obtained which is compared with the spectrum of the norm. The accelerations given by the specific spectrum for buildings that have structural periods between 0.10sec - 0.60sec are greater than those obtained according to the NEC-15.