Pushover Analysis of Multi-Story Reinforced Concrete Frame Structure

Abstract

Pushover analysis is a non-linear static procedure (NSP) used to examine the structural response of a building during the inelastic limit before it reaches the edge of partial or total collapse. In this study a model of multi-story reinforced concrete building along with applied loads is analyzed in powerful non-linear static procedure using computer software ETABS. A limited number of horizontal forces are then applied to imitate the impact of ground movement. The building is supposed as a 6-story building, no shear walls used in the model as the level of earthquake hazard assumed very low. Moreover, deformations are determined. The forces would then be increased gradually, NSPs convert multi-degree of freedom models to single-degree of freedom models utilizing a pushover analysis to determine capacity curve or pushover curve which is horizontal roof displacement vs base shear, This curve plot reveals the highest base motion that the structure can withstand, and then estimate the maximum global displacement by combining a ground response spectrum with the capacity curve.