Determinación del desempeño sísmico económico de un edificio en acero, mediante la metodología del FEMA P-58 y su programa Pact.

Abstract

In a country like Ecuador with great seismic danger, it is important to investigate methodologies that help to mitigate the damage that the structures could have in the occurrence of these seismic events. A methodology that allows determining the possible damage that the building could have, is the methodology described in the FEMA P-58, which allows us to know economic results and casualties in a probabilistic way. The present research work began by performing a seismic resistant analysis of a building, with a lateral load resistant system of special SMF moment resisting structural steel frames composed of HEB cruciform columns and IPE beams. We started designing the structures by means of a linear static and dynamic analysis. The structure has an adequate behavior and complies with the mandatory regulatory checks, such as checking the floor drifts, the design of its structural elements and connections. In order to carry out the design according to the FEMA P-58 methodology, it was necessary to perform a nonlinear dynamic time-history analysis, for which 11 seismic records were selected, which were scaled to different intensity levels and as a result information on displacements and floor accelerations was obtained. These were used for the application of the PACT tool of the FEMA P-58 methodology, which is a program that allowed us to determine the possible cost, repair time of the building, as well as injuries and deaths for the different levels of intensity.