Evaluación estructural y propuesta de rehabilitación, para el edificio de estructura metálica correspondiente a la Notaría 49, ubicada en la parroquia El Quinche-calle Guayaquil y Sucre, cantón Quito, provincia Pichincha, en el año 2021

Abstract

This degree project describes the appropriate process for the rehabilitation of existing structures, through the application of the code of the American Society of Civil Engineers (ASCE 41-17), the current Ecuadorian Construction Standard (NEC-15) and its complementary chapters. For the development of the project, the "Notaria 49" building was used as a base, consisting of 4 levels, intended for office and housing use, made up of a moment-loaded system with metal beams, rectangular metal columns filled with concrete, shear walls and deck collaborating panels. The building is to be enlarged by 2 levels that will be used for offices, so the evaluation and rehabilitation of the building is required to comply with the required parameters. First of all, a visual inspection of the structure was carried out using the formats established by the NEC and FEMA 154 in its current state, collecting the most relevant information in the field in order to know the level of seismicity to which it is exposed. Subsequently, the building was modeled using ETABS 2018 software to identify the structural problems with respect to the seismic-resistant requirements established by NEC 15 by means of a spectral modal dynamic analysis. Secondly, the enlarged structure was modeled and evaluated in the aforementioned software and, based on this analysis, the use of concentric bracing diagonals was determined as a rehabilitation measure, which improved the behavior of the structure. Finally, the rehabilitation measure and the connection elements were designed, and a reference budget for the proposed project is presented.