Pushover Analysis on Non Linear Behavior of Rcc Frame

Abstract

To model the complex behavior of reinforced concrete analytically in its non-linear zone is difficult. This has led engineers in the past to rely heavily on empirical formulas which were derived from numerous experiments for the design of reinforced concrete structures. For structural design and assessment of reinforced concrete members, the non-linear analysis has become an important tool. The method can be used to study the behavior of reinforced concrete structures including force redistribution.

This analysis of the nonlinear response of RC structures to be carried out in as per ATC 40 or FEMA 273. It helps in the investigation of the behavior of the structure under different loading conditions, its load deflection behavior and the cracks pattern. In the present study, Pushover analysis on RCC frames using ETABS with and without vertical irregularity under the loading has been carried out. The intention is to investigate the relative importance of several factors in the non-linear analysis of RCC frame models and compare the results. This includes the variation in load displacement graph i.e. Pushover curve, Storeyshears, Inter storey drifts, Lateral displacements, Hinge properties, Performance point.