COMPARATIVE RESPONSE SPECTRUM ANALYSIS OF G+14 MULTI-STORY STRUCTURE WITH AND WITHOUT FLOATING COLUMN IN SEISMIC ZONE V USING ETABS

Abstract: Nowadays lots of multistory buildings are constructed with floating columns for aesthetic point of view and for getting more space in parking areas for movement. However, such buildings are highly damaged during earthquakes in highly seismic zones as compared to normal buildings. In urban areas, multi-story buildings are constructed by providing floating columns on the ground floor for the various purposes which are stated above. The motive is to compare the response of RC frame buildings with and without floating columns under earthquake loading and under normal loading. The effect of earthquake forces on various building models for various parameters is proposed to be carried out with the help of response spectrum analysis. In this study, it was found that the story displacement, story drift, and story shear of a building without a floating column was more efficient than that of a building with a floating column. On comparing it has been concluded that the maximum story displacement obtained for Cases 1 & 15 with a minimum value of 11.158 mm & 14.8 mm respectively. Comparing the Story drift for all cases, Cases 1, 5, 7 & 15 are observed as most efficient. On analyzing story shear values, Cases 1, 5, and 10 are found to be optimum for both X & Z direction among all cases.

Keywords: Floating column, Story Drift, Base shear, Story Displacement.