Diseño estructural sismorresistente de un edificio comercial de 2 plantas en Machala, Ecuador

Abstract

The present project develops the seismic-resistant design of a two-story commercial building located in the city of Machala, under the regulatory framework of the Ecuadorian Construction Code NEC-SE-DS 2015. The main objective is to ensure safe structural performance against the seismic events characteristic of the area, which is marked by soils with low bearing capacity. The design considered the use of a steel structural system based on special moment-resisting frames, combined with composite steel decks, in order to optimize the self-weight of the building and reduce foundation dimensions, where a square isolated footing of 1.90 meters was adopted. Structural analysis and modeling software supported the design process. The results showed that the pre-designed sections comply with the maximum drifts and displacements required by the code, ensuring an efficient and reliable design. It is concluded that the steel system combined with isolated footings constitutes a viable alternative that reduces construction time and enhances project sustainability compared to a reinforced concrete structure. Keywords: Earthquake, MASW, alluvial soils, steel structures,NEC.