Análisis de vulnerabilidad sísmica en marcos especiales a momento en edificaciones de alta concurrencia

Abstract

This paper analyzes the safety of buildings constructed with special moment frames (MEM) against earthquakes of different intensities, taking as a case study a building located in the city of Machala, Ecuador. This area is considered to be at high seismic risk, since it is part of the Pacific Ring of Fire. The analysis was carried out by applying two methods: the FEMA P-154 rapid visual inspection, which allows the identification of structural risks with a general observation, and the Pushover type nonlinear structural analysis, which shows how a building behaves in the event of strong earth movements. The Ecuadorian Construction Standard (NEC-SE-DS-2015) was used as a basis to ensure that the technical parameters conform to national requirements. During the study, the building was modeled on computer, evaluating the type of soil D, the distribution of columns and beams, and the points where structural failures could form. The results show that the building has several vulnerable points due to structural design failures. This shows that it is necessary to make more detailed studies of the terrain before building and to strictly follow the seismic resistant design standards. This type of research seeks to protect the integrity of people and buildings in areas prone to earthquakes.