PERFORMANCE ANALYSIS OF RCC AND STEEL CONCRETE COMPOSITE STRUCTURE UNDER SEISMIC EFFECT

Abhishek Sanjay Mahajan, Laxman G. Kalurkar

Abstract: The RCC Structure is no longer suitable because of increased dead load, span rejection and less stiffness .The structural engineers are trying to use different materials for most efficient design solution .There is great potential for increasing volume of steel in construction .The percentage of steel can be increased with the use of steel-concrete composite sections. The paper presents the effect of FEC (Fully Encased Composite) on a G+ 20 storey special moment frame .In this paper two different structures are considered for the comparison under seismic analysis. The linear static analysis and nonlinear static analysis i.e. “Pushover analysis” are done for G+20 storey structure. The building is analyzed and design for seismic loading by using ETAB software. The unique method of pushover analysis is followed with the help of FEMA 36 specifications and for hinge formation ATC40 is considered. Results are compared for the Base shear, Modal time period, Storey displacement and storey drift for both structures. As the composite is having more lateral stiffness, the results of time period and storey displacement shows the significant variation. While analyzing for “Non-linear static analysis the performance point for the FEC is significantly much more as compared to the RCC model.

Keywords: Composite, RCC Structure, Static Linear, Non Linear Static

DOI: https://doi.org/10.15623/ijret.2016.0504015