NON - LINEAR DYNAMICS RESPONSE OF BASE ISOLATED RC BUILDING IN HIGH - SEISMIC ZONE OF INDIA

ICSRR – E086
NON - LINEAR DYNAMICS RESPONSE OF BASE ISOLATED
RC BUILDING IN HIGH - SEISMIC ZONE OF INDIA

Abstract:
Earthquakes pose a significant threat to reinforced concrete (RC) buildings
for G+20 with Terrace Floor, particularly in regions classified as high
seismic zones. Conventional fixed-base structures directly transmit seismic
forces from the ground to the superstructure, often resulting in severe
structural damage. Base isolation is a modern seismic protection technique
that decouples the building from ground motion and significantly reduces
seismic response. This study investigates the nonlinear dynamic response
of a base isolated reinforced concrete building located in a high seismic
zone of India. A comparative analysis is conducted between a conventional
fixed-base RC building and a base isolated RC building in G+20 with
Terrace Floor . The structural models are developed using advanced
structural analysis software and subjected to nonlinear time history
analysis. Key response parameters such as base shear, displacement,
inter-storey drift, and acceleration are evaluated. The results demonstrate
that base isolation significantly reduces seismic forces transmitted to the
superstructure while increasing overall flexibility. The study confirms that
base isolation systems are effective in enhancing structural performance
and safety in high seismic zones of India.
Keywords: Nonlinear Dynamic Analysis, Base Isolation System, Reinforced
Concrete Building, Seismic Response, High Seismic Zone, Time History
Analysis, Inter-storey Drift.