Seismic Performance of Plan-Irregular RC Structures with Base Isolation as Scrap Tyre Rubber Pads(STR PS)

This present study focuses on the seismic performance of plan-irregular reinforced concrete (RC) G+5 buildings (L-shaped and T-shaped) using base isolation made from scrap tyre rubber pads (STRPs). The research models regular and irregular structures in ETABS 21 software to determine essential seismic parameters such as displacements, storey drifts, base shear, bending moments, and axial forces, implements isolators as equivalent lateral springs and viscous damping, and performs Response Spectrum Analysis (RSA) according to IS 1893 (Part 1):2016. Results compare natural periods, base shear, roof displacement, and story drifts for fixed-base and STRP-isolated configurations. The work emphasizes sustainable reuse of tyre waste and. The primary objectives include evaluating the building's response to horizontal seismic forces, determining key response parameters such as displacement and drift, and validating the analysis results against codal provisions. The research provides insights into the seismic performance of medium-rise structures and emphasizes the importance of incorporating seismic analysis in the planning and design stages to enhance structural resilience and disaster preparedness.