Assessment of modal pushover analysis for mid-rise concrete buildings with and without viscous dampers

Abstract

In light of its tremendous saving in computational effort, the Modal Pushover Analysis (MPA) approximate procedure has been successfully applied to estimate seismic demands of structures with a level of accuracy that makes it a strong competitor to nonlinear response history dynamic analysis (NL-RHA) in steel buildings with short to medium periods. However, the applicability of MPA to reinforced concrete buildings, especially those undergoing large inelastic seismic demands and in the presence of energy dissipation devices, has not been well established. The purpose of this study is to extend the applicability of the MPA method to mid-rise special moment resisting frame (SMRF) concrete buildings with and without energy dissipating devices (linear viscous dampers). Results indicate that that the MPA can predict, with simple modifications, the seismic deformation response of SMRF mid-rise concrete buildings (with or without dampers) with reasonable accuracy compared to NL-RHA.