Comparative Study of Flat Slab Structures with Steel Bracings

Abstract

Many past researches show that the flat slab building system is weak in lateral load resistance induced due to seismic actions. To enhance the seismic performance of flat slab building, it needs an effective lateral load resisting system. In this present work, G+5, G+7 and G+9 storied flat slab building system as well as conventional building system were modelled. For lateral load resistance, various types of steel braces were modelled on flat slab structure and seismic analysis was done. Equivalent static analysis method and Response spectrum analysis method were performed using IS 1893 2016. The comparative study of seismic parameters i.e. maximum storey displacement, maximum inter storey drift, base shear and fundamental natural time period among the various braced as well as unbraced models were performed. The study shows that use of steel bracings as a lateral load resisting system on flat slab building enhances the seismic performance of flat slab system.