USE OF FLAT SLABS IN MULTI-STOREY COMMERCIAL BUILDING SITUATED IN HIGH SEISMIC ZONE

Navyashree K, Sahana T.S

Abstract: In present era, conventional RC Frame buildings are commonly used for the construction. The use of flat slab building provides many advantages over conventional RC Frame building in terms of architectural flexibility, use of space, easier formwork and shorter construction time. The structural efficiency of the flat-slab construction is hindered by its poor performance under earthquake loading. In the present work six number of conventional RC frame and Flat Slab buildings of G+3, G+8, and G+12 storey building models are considered. The performance of flat slab and the vulnerability of purely frame and purely flat slab models under different load conditions were studied and for the analysis, seismic zone IV is considered. The analysis is done with using E-Tabs software. It is necessary to analyze seismic behaviour of building for different heights to see what changes are going to occur if the height of conventional RC Frame building and flat slab building changes. Therefore, the characteristics of the seismic behaviour of flat slab and conventional RC Frame buildings suggest that additional measures for guiding the conception and design of these structures in seismic regions are needed and to improve the performance of building having conventional RC building and flat slabs under seismic loading, The object of the present work is to compare the behaviour of multi-storey commercial buildings having flat slabs and conventional RC frame with that of having two way slabs with beams and to study the effect of height of the building on the performance of these two types of buildings under seismic forces. Present work provides a good source of information on the parameters lateral displacement, storey drift, storey shear, column moments and axial forces, time period.

Keywords: Reinforced Concrete Frame; ETABS 9.7.4; Flat Slab.

DOI: https://doi.org/10.15623/ijret.2014.0308069