ANALYSIS OF G+6 RC FRAME BUILDING RESTING ON SLOPED GROUND USING SEISMIC RESPONSE METHOD

Abstract: Structural frameworks constructed on hill slopes exhibit distinct structural characteristics compared to those on flat terrain. Due to their inherent asymmetry, these buildings experience significant shear forces and torsional moments. Additionally, the distribution of these forces is uneven due to variations in column lengths. This research involves the modelling and analysis of two different configurations of hillside buildings using the ETABS software. A parametric investigation was conducted, varying the incline of the hill slope (20° and 25°). The analytical models were subjected to seismic forces employing the Response Spectrum Method. The resulting dynamic parameters were examined, including fundamental natural periods, maximum storey displacements, storey drifts, and storey shear forces. A comparative analysis was performed between the two considered hillside building configurations- Stepback and Stepback-Setback. Ultimately, based on the findings, recommendations are made regarding the suitability of various hillside building configurations. The buildings in this study are equipped with shear wall, bracing and a combination of both and their overall performance is thoroughly assessed.

Keywords: sloped terrain, step-back configuration, storey shear, time period, top storey displacement.