Evaluación de la vulnerabilidad sísmica de las edificaciones de la ciudad de Quito – Ecuador y riesgo de pérdida

Abstract

In the present study, an analysis of seismic vulnerability and risk of loss in buildings of the city of Quito, it’s developed in the occurrence of a seismic event. A representative sample is taken of the Historic Center of Quito, since its buildings include the different typology of construction of the entire city. In this analysis methodologies tested in Europe and the United States like HAZUS and PERPETUATE are used, as well as models developed in Ecuador for determining capacity curves, fragility curves, performance points, and maximum floor drifts are used. In the sample of 2606 buildings in the Historic Center of Quito the HAZUS methodology was applied to classify. Once classified the principle of similarity to the project PERPETUATE is used for the typology of masonry bearing. As a result is obtained that, during a disastrous event, these buildings will suffer damage. For the typology of reinforced concrete is used to HAZUS methodology adapted to Ecuador. The curves of capacity, performance points and floor drifts are used. With these, the fragility curves are accesed to define the percentage of damage and finally know the vulnerability of these buildings. This concludes that the City of Quito has a high degree of vulnerability, not only by the characteristics of the soil and its failures, but also by the way it is designed and constructed. The results obtained are inconclusive and are susceptible to be improved in terms of available technology.