COMPARISON OF SEISMIC PERFORMANCE OF OUTRIGGER AND BELT TRUSS SYSTEM IN A RCC BUILDING WITH VERTICAL IRREGULARITY

Daril John Prasad, Srinidhilakshmish Kumar

Abstract: Height of the building is one of the important factor which restricts its upward movement. Today, tall buildings are inevitable in urban cities. So, the structure requires an efficient system which can actively participate in the event of wind and earthquake. One such type of system is outrigger-belt truss system. The main objective of this research is to compare models with outrigger, belt truss and outrigger with belt truss in which their position remains constant in all the models. A 30-storey structure with vertical irregularity is subjected to seismic analysis as per IS 1893 (Part-1): 2002 using finite element software ETABS and compares the parameters such as base shear, lateral displacement and storey drift. Seismic analysis using equivalent static and response spectrum method has been performed. This paper aims in concluding the efficient lateral load resisting system.

Keywords: Outrigger,Belt truss, Tall building, Vertical Irregularity , Lateral displacement, Base shear, Storey drift, ETABS

DOI: https://doi.org/10.15623/ijret.2016.0532019