Diagnóstico de patologías y análisis estructural del edificio de la Facultad de Ingeniería Civil y Ambiental de la Escuela Politécnica Nacional.

Abstract

The main objective of this work is to determine the influence of pathologies of structures present in the FICA-EPN building on its seismic performance. For this, the first generation of performance-based earthquake engineering is used, taking as reference the ASCE / SEI 41-17 and NEC-15 standards. A summary of the theoretical aspects related to pathologies in buildings and the simulation of seismic pounding is presented. The geodynamic context of the site where the structure is located is described to select records of ground motion acceleration representative of the seismic hazard of the study area and they are processed to be used in non-linear Time History analysis. The properties of the concrete of the structures are obtained through destructive tests carried out for this work and for past investigations of the EPN. The computational models are built in the ETABS program, the non-linearity of the structural components is concentrated in plastic hinges located at the ends of each element. The infill masonry panels are modeled using the Rodrigues (2008) approach and the seismic pounding effects are captured using the Linear Elastic impact model. The verification of the structural performance is carried out for each structure separately and subsequently the effect of pounding is included. Three performance indices are defined to evaluate the influence of pounding. The maximum responses used are: normalized drifts, normalized shear forces and normalized absolute accelerations.