Pushover Analysis of Regular Reinforced Concrete Buildings with different column section designs

Abstract

Seismic engineers are increasingly turning to non-linear methods of analysis which predict the structural behavior of buildings subjected to lateral efforts. This is in many ways a more satisfactory procedure than relying on elastic analysis reduced by a ductility factor. Pushover analysis is a commonly used technique to which, seismic codes increasingly refer, as Eurocode 8 and FEMA 356. The purpose of this paper is to compare the seismic behavior of four reinforced concrete building design, under three different ground accelerations. This article examines the influence of columns reinforcement rate on the seismic behavior of moment structures. 4 models were studied using the nonlinear static method to deduce and compare their behavior with respect to seismic excitation. Comparing the performance points demonstrated a large increase in the seismic vulnerability of structure with the decrease of column reinforcement rate.