Análisis técnico comparativo entre el sistema Steel Framing y Hormigón Armado con diferentes cubiertas, en estructuras regulares

Abstract

An investigation is presented that had the purpose of comparatively evaluating twelve structural models with different types of roofs (two, four and multiple waters), separated into Reinforced Concrete and Steel Framing using a finite element tool, which met the seismic resistance parameters established in the NEC-SE-DS-2015, of which six models were made in Reinforced Concrete and the other half with Steel Framing. Commonly, Reinforced Concrete constructions predominate in the Ecuadorian market; INEC data reveal that buildings exceed with more than 80 % both residential and commercial use, so that research done he focused on building a new construction technology called Steel Framing that can meet and even exceed the same demands of the traditional system before seismic events. The results obtained were evaluated through analytical and comparative graphs that showed that Steel Framing structures are significantly lighter with respect to Reinforced Concrete, finding a decrease of 94,1 %; It does not have its own mechanisms to generate plasticizing points, that is, it is a low ductility system, that does not mean that it is a material that does not resist seismic forces since it is a system of reduced mass and high rigidity, due to the fact that they are placed diagonal bracing in the wall panels and this allows the oscillations of an earthquake to be of. high frequency in very low periods. With reference to the vibration periods, a vulnerability analysis was carried out that expresses the indicated behavior that the structures must comply with, which should not exceed the value of 29, in the study models the most critical value is 28,5; concluding that the structures are adequate.