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Seismic Analysis of High Rise Building on Plain and Sloping Grounds with Regular and Irregular Configurations

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Abstract:

With the increasing population and unavailability of plain grounds in some regions, the need for high-rise buildings is increasing day by day. Buildings constructed on sloping terrain are more prone to earthquakes because of their uneven floor plans and elevations. This study examines the seismic behavior of high-rise buildings on both flat and sloping terrains, with a focus on comparing regular and irregular structural configurations. In this study a total of 25 G+15 RCC Step-back buildings with regular and irregular configurations such as Square shape, C-shape, U-shape, L-shape and Cross shape each of which are resting on grounds with sloping angles of 0º, 10º, 20º, 30º and 45º have been made using ETABS software as per IS 1893 (Part 1): 2016. The study employs the Response Spectrum Method to evaluate Storey Displacements, Storey Drifts, Base shears, and Time periods. It is observed that the storey displacement and storey drift decrease as we increase in sloping angle mainly due to curtailment of the columns, and the regular configurations of structures have better seismic performance than irregular configurations.

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Periodical:

Applied Mechanics and Materials (Volume 929)

Pages:

35-47

DOI:

https://doi.org/10.4028/p-3HE9fM

Citation:

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Online since:

December 2025

Authors:

Raldy Vanlalrinfela*, Prince Sharma

Keywords:

ETABS, Irregular Structure, Response Spectrum Method, Seismic Analysis, Sloping Ground

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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