Seismic resistant behavior of a reinforced concrete structural system and a metallic structural system in the city of Chiclayo

Abstract

Seismic movements affect 25% of buildings worldwide, causing structural vulnerability; Peru, located in the Pacific Ring of Fire, makes its buildings highly vulnerable, which highlights the importance of evaluating seismic-resistant structural systems to mitigate risks and guarantee safety. The objective of the present study was to compare the seismic resistance behavior of a reinforced concrete structural system and a metallic structural system in the city of Chiclayo. For this purpose, a study was carried out in which a high-rise building was evaluated under two systems: reinforced concrete and steel, in accordance with the current regulations, evaluating the specific characteristics of the area and the regulations (loads, combinations, parameters, etc.) for each system using the ETABS v21 software. The results obtained showed that the height factor directly affected the lateral displacements, on the other hand, in the basal shear, the predominant value was that of the reinforced concrete structure with a value of 211.95kn compared to the steel structure with 201.15kn, likewise, the distortions between floors indicate that the reinforced concrete system presents a higher value of drift at each level. The ETABS analysis showed that the steel structure had better seismic behavior due to its flexibility and energy dissipation, while the concrete structures had higher stiffness and basal shear. The differences in lateral displacements favoured steel, however, both complied with the drift limits according to E030.