Análisis de vulnerabilidad sísmica con la medición de vibraciones y reforzamiento dinámico del edificio de la Facultad de Contabilidad y Auditoría bloque 2 de la Universidad Técnica de Ambato.

Abstract

In the present research, was accomplish the Seismic Vulnerability Analysis of FCAUTA-B2´s building, applying two methodologies, the first qualitative method based on a visual analysis, uses matrices established by FEMA154 and NEC2015, whose qualifying parameters focus on the characteristics of the structure, such as type of soil, regulations, irregularities and structural system. The result based on the two regulations offer a low risk level. The quantitative methodology consisted in a linear and non-linear analysis, where soil studies and trials were necessary to get important characteristics. With the results gotten, it was possible to specify that at the global level the structure presents torsion on floor with high drifts; consequently, at structural level, the elements don’t bear the different levels of seismic hazard, result on a high degree of vulnerability. Once the structural deficiencies were identified, a reinforcement proposal was made, which first point was to correct the torsion and drifts with the implementation of shear walls; Next, a steel cladding was applied for columns that had a very poor demand / capacity ratio, but once it was reinforced showed a considerable improvement. Finally, with the applied reinforcements, an optimal seismic performance level was obtained, with a life safety range for a special occupation earthquake. Regarding the vibrations of the structure, a comparison of periods based on empirical formulas belong on environmental vibrations was made, relating the structure to a medium threat level without reinforcement and a low level once the building was reinforced.