Comparative Study on High Rise RC Flat -Slab Building Performance for Lateral Loads with and without Diagrid System

Abstract

The latest trend in high rise building is diagrid structures because of structural and architectural effectiveness. In the study, diagrids are provided for Flat-slab Building and detailed analysis is carried out to check the behavior of flat-slab buildings with and without diagrid. ETABS 16.2.0 software is used for modeling, analysis and designing of models. G+11 and G+23 storey buildings of plan size 36m x 36m with storey height 3.5m located at zone v are modeled, analyzed and designed. Equivalent static and response spectrum analyses are carried out and comparison is drawn between conventional building, flat-slab building and flat-slab building with diagrids in terms of base shear, top storey displacement, maximum storey drift and modal period. Flat-slab diagrid buildings are more lateral resistant than flat-slab buildings as top storey displacement and maximum storey drift are decreased. Flat-slab diagrid building with corner columns is more lateral resistant than flat-slab diagrid buildings without corner columns but flat-slab diagrid buildings without corner columns are spacious than flat-slab diagrid buildings with corner columns. Performance of flat-slab diagrid buildings depends on aspect ratio. Flat- slab diagrid building without corner columns requires higher diagrid member section than that of flat-slab diagrid building with corner columns.