PERFORMANCE BASED SEISMIC DESIGN - SINGLE FAMILY HOUSE

Abstract

In this research work, a performance-based design of a single-family reinforced concrete house measuring 7 m x 15 m with three stories (3.20 m/floor) was carried out through a nonlinear static analysis (pushover) in both X and Y directions, on type "D" soil located in the city of Machala, Ecuador. This analysis yielded the capacity curve, calculated the ductility, overstrength, and response reduction factor "R." Additionally, the global stability of the structure was determined using the performance point and elastic response spectra (R=1) for the frequent earthquake level (72 years), occasional earthquake level (225 years), rare earthquake level (475 years), and very rare earthquake level (2500 years), created from the seismic hazard curves extracted from the NEC-2015 standard for the city under study. The local stability of the structure was also analyzed with the formation of plastic hinges at the "steps" where the target displacement is reached. Among the main results, for the global stability of the structure at the rare earthquake level in the X direction, the structure ensures life safety, with a maximum ductility of 6.63, an overstrength of 3.24, and a calculated R factor of 8.3. In the Y direction, the structure also ensures life safety, with a maximum ductility of 10.49, an overstrength of 3.30, and a calculated R factor of 13.1