Zonas geotécnicas con condiciones favorables y desfavorables para construcciones desde ensayos geofísicos de sismicidad en la ciudad de Guaranda, Ecuador

Abstract

Ecuador, being located in the Pacific Ring of Fire, is a country that is exposed to threats of natural origin, such as earthquakes that have caused the loss of human life, damage and destruction of buildings and essential infrastructure, which that affect the development process of the territories; The 2016 earthquake, reflecting the high seismic danger of the country, already caused serious damage, mainly due to two factors: the quality of the soils and the construction of public and private buildings. The purpose of this study is to carry out studies to determine the soil profile to identify geotechnical zones with favorable and unfavorable conditions for construction through geophysical seismicity tests in the urban area of ​​Guaranda. The combination of two MASW and MAM methods allows us to obtain the results of the S wave velocity profiles (Vs) with an approximate evaluation depth of 300m to 80m. This allows us to establish the subsoil stratigraphy indirectly, calculating the change of the dynamic properties in the materials that make it up, with the result of shear wave velocity (Vs), the physical characteristics of the soil depend on the materials that contain its different layers in depth and that can be appreciated with geology, stratigraphy . and geomorphology. Taking into consideration, its dynamics associated with the occurrence of earthquakes and rainfall can be known using geophysical methods of temporal monitoring.