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Volume 16 Issue 4
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Effect of Floating Columns on the Seismic Performance of an Rc Framed Structure in Different Seismic Zones

Author(s) Mr. G LAKSHMI VARA PRASAD, Mr. G TEJA, Ms. A GAYATHRI DEVI
Country India
Abstract Many buildings are planned and constructed with architectural complications. The complications include various types of irregularities like introduction of floating columns at various floor levels and locations. Buildings are critically analysed for the effect of earthquake. Earthquake load as specified in IS 1893 (part 1) - 2016 are considered in the analysis of building.
In the present scenario, buildings with floating column is a typical feature in the modern multi- storey construction in urban India. Such features are highly undesirable in building built in seismically active areas. These floating columns are introduced to the buildings so that the structure serve for both commercial and residential purpose and the floating columns start from the floor levels where the building would serve as residential building.
A G+8 storied RC frame with and without floating columns has been considered. Building with floating columns are introduced at different storey levels is analysed for various earthquake zones.
For this project effect of floating columns (i.e., G+8 storeys building) chosen considering different cases in each case the position of floating columns were changed in each floor and linear static analysis was done using STAAD Pro software.
This study highlights the importance of explicitly recognizing the presence of the floating column in the analysis of building. In overall study of seismic analysis, critical load combinations are found out. For these critical load combinations, case wise variation in various parameters like base shear, storey drift, lateral displacements, maximum bending moment at various floor level are compared and significant co-relationship between these values are established with graphs.
Keywords Floating Columns, Framed Structure
Field Engineering
Published In Volume 16, Issue 4, October-December 2025
Published On 2025-10-12
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