“ANALYSIS OF SEISMIC BEHAVIOUR OF MULTI-STORIED R.C.C. BUILDINGS RESTING ON SLOPING GROUND AND BRACING SYSTEM”

CIVIL ENGINEERING

The buildings situated on hill slopes in earthquake prone areas are generally irregular, torsionally coupled and hence, susceptible to serve damage when affected by earthquake ground motion. Such buildings have mass and stiffness varying along the vertical and horizontal planes, result the center of mass and center of rigidity do not coincide on various floors. The dynamic analysis is carried out using response spectrum method. The dynamic response that is fundamental time period, storey displacement and base shear action induced in columns has been studied for buildings of different heights. These results show that the performance of step back and set back building frames are more suitable in comparison with step back building frames. But after considering bracings to the step back building frames, a better performance can be observed when compared with step back and set back building frames. Three dimensional space frame analysis is carried out for four different configurations of buildings ranging from eight, ten and twelve storey resting on sloping ground. Building models are analyzed by ETABS software to study the effect of time period, storey displacement and base shear.

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