International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 08 Issue: 04 | Apr 2021 www.irjet.net p-ISSN: 2395-0072 © 2021, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 4112 Pushover Analysis of Reinforced Concrete Building with and without Floating Column Abdul Azeem Shaikh 1 , Dr. A.P. Wadekar 2 , Dr. D.N Kakade 3 1 P.G. Student, Civil Engineering Department, PES College, Aurangabad, Maharashtra, India. 2 Principal, PES College, Aurangabad, Maharashtra, India. 3 Prof, Civil Engineering Department, PES College, Aurangabad, Maharashtra, India. ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - One of the emerging fields in seismic design of structures is the Performance Based Design. In this study Push over analysis is adopted because this analysis will yield performance level of building for design capacity (displacement) carried out up to failure, it helps in determination of collapse load and ductility capacity of the structure. Two RC buildings are considered one without floating column and another with floating column which are being analyzed by using ETABS 2015 software. Finally the results of pushover analysis for both the building are compared in terms of roof displacement, base shear and the force and moment carrying capacities. Key Words: Capacity curve, E-tabs, Floating column, Seismic performance 1. INTRODUCTION Earthquakes have the potential for causing the greatest damages, amongst the other natural hazards. They are perhaps the most unpredictable and devasting of all natural disasters. Hence concern about seismic hazards has led to an increasing awareness and demand for structures designed to withstand seismic forces. Traditional earthquake resistant design is based on force strength approach. This method aims to achieve only one performance objective life safety. Such a method is inadequate to predict the damage mechanism correctly. Hence, performance based seismic design with the consideration of both structural and non-structural damage, multiple performance objectives, specific quantification of performance criteria and explicit consideration of inelastic deformation of the structures are required to achieve the seismic design methodology. Therefore, for this reason nonlinear static pushover analysis is carried out for the present work 1.1 Pushover Analysis Nonlinear static analysis, or pushover analysis, has been developed over the past twenty years and has become the preferred analysis procedure for design and seismic performance evaluation purposes as the procedure is relatively simple and considers post elastic behaviour. However, the procedure involves certain approximations and simplifications that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. 1.2 Floating column Floating column is also called as hanging column or stub column, which unlike regular column rest over the beam element of the structure. The regular column is designed to transfer the load to the foundation or to the column below and then to foundations. But a floating column will not be involved in the direct transmission of the load. The floating column may be positioned on the first floor or top floors or any of the intermediate floors based on the requirements in the architectural design of the respective structure. The arrangement of a hanging column is in such a way that it simply floats or is being hung over a base (beam or slab) with no fixed support below with the foundation. This gives the vertical column the name floating or hanging column as shown in the image below. 2. SYSTEM DEVELOPMENT Two soft storied reinforced concrete frame building with and without Floating column situated in zone V with subsoil Type medium - I were analyzed in ETAB software. For the analysis of these models various methods of seismic analysis are available but for present work linear and non linear static methods are used. Type of Structure SMRF Soil Type Hard – 1