Evaluación del comportamiento dinámico de estructuras aporticadas con presencia de ampliaciones verticales

Abstract

Abstract: Ecuador is a country with an intense seismic activity, which has caused earthquakes with significant human and material losses. In spite of this, it has become increasingly common to build houses informally, without structural studies to guarantee their seismic performance. In this paper, the seismic behavior of the framed structures with vertical extensions in Loja city was evaluated through the application of a pushover analysis and the determination of their performance point. It was found that a large part of the analyzed structures would not be able to resist the design earthquake, due to their lack of stiffness and low ductility. Therefore, a retrofit proposal was designed for these structures, which consisted of increasing the cross sections of beams and columns. The proposed retrofit significantly improved the seismic performance of the buildings, and solved the structural deficiencies found, guaranteeing the safety of the inhabitants of these buildings in the design earthquake.