• Sharif Rasouli
• Maganti Janardhan Yadav

Abstract: Buildings constructed on hill slopes are highly asymmetrical, often irregular, and torsionally coupled, making them particularly vulnerable to severe damage during earthquake ground motion. A significant danger arises from the unequal height of columns and shear walls on the sloping surface, leading to increased stiffness in the structure's ground floor. This increased stiffness attracts more seismic forces, which can cause cracks and potential failure in the building. This study examines a 21-storey Reinforced Concrete (RC) framed building situated on sloping ground in Uttarakhand, India. The seismic response of this high-rise building is analysed using linear dynamic analysis (Response Spectrum Analysis). This research addresses the unique challenges posed by sloping terrains by focusing on the seismic analysis of buildings incorporating shear walls with varying thickness throughout the structure's height in seismic zone IV. The slope angles considered in this analysis are 10˚, 15˚, 20˚ and 25˚ degrees. With the increase in the slope angle from 10˚ to 25˚, base shear, overturning moments, and displacement patterns change significantly, especially in the x-direction where higher base shear and overturning moments occur, while in the y-direction, displacement is greater due to uneven stiffness from varied column heights. Key parameters analysed include maximum Storey displacement, Storey shear, time period, Storey drift, stability checks against overturning moments, torsion, and mass irregularity. Modal time periods decrease with slope, storey drift remains within the permissible limits, and models satisfy the requirements for Torsion as per IS 1893 (Part 1)-2016. By addressing these critical factors, the study recommends the factors to be considered in the design and safety of buildings in seismic-prone areas with challenging topography.

RC Building, Sloping Ground, Response Spectrum method, Shear Wall.

"Seismic Analysis of Building on Sloping Ground with Shear Wall", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 11, page no.e174-e189, November-2024, Available :http://www.jetir.org/papers/JETIR2411423.pdf

"Seismic Analysis of Building on Sloping Ground with Shear Wall", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 11, page no. ppe174-e189, November-2024, Available at : http://www.jetir.org/papers/JETIR2411423.pdf