Influencia del factor de reducción de resistencia sísmica (R) en edificaciones, utilizando los sistemas constructivos: Dual losas postensadas-muros y tradicional

Abstract

An analysis of fourteen structural models is presented, seven of which correspond to reinforced concrete buildings and seven to buildings with dual system of post-tensioned slabs and cutting walls, modeled and analyzed from the tools ETABS-2016 and SAFE12. The structures were subjected to a linear static analysis considering compliance with the controls set out in the NEC-SE-DS standard, 2015 ensuring adequate seismic-resistant behavior in them. In addition, a nonlinear analysis was performed, obtaining the capacity curve of the structures, in order to determine parameters that allow to calculate the Seismic Resistance Reduction Factor (R) in each model. The results of the R-factor were obtained from several methods in force and compared to the norm, going so far as to determine that the mean of the values for the case of the reinforced concrete porch system is 6.01, while, for that case of the dual system of post-tensioned slabs and cutting walls is 6.66, that is 24.86% and 16.77% lower than considered in the norm, correspondingly.