International Journal For Multidisciplinary Research

E-ISSN: 2582-2160   •   Impact Factor: 9.24

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Comparative Seismic Performance Evaluation of Base-Isolated and Damper-Equipped Reinforced Concrete Buildings

Author(s) Prof. Vidya B. Dhawle, Ms. Bhakti S. Dharpale, Ms. Nikita B. Ghodke, Ms. Archana J. Rathod, Ms. Nikita R. Joshi, Ms. Gayatri D. Surashe
Country India
Abstract Earthquake-induced damage to reinforced concrete buildings remains a major concern in seismic regions, necessitating the adoption of advanced vibration control techniques beyond conventional strength-based design. Among these techniques, base isolation and seismic dampers represent two fundamentally different approaches to mitigating seismic demand. This study presents a comprehensive comparative case analysis of base isolation systems and column-installed seismic dampers to evaluate their effectiveness in improving structural seismic performance. A multi-storey reinforced concrete frame is analytically modelled and subjected to seismic loading using response spectrum and time-history analysis methods. Key response parameters including fundamental time period, base shear, storey displacement, inter-storey drift, floor acceleration, and energy dissipation are systematically examined. The results demonstrate that base isolation significantly lengthens the structural time period and achieves substantial reduction in base shear and floor accelerations, making it particularly suitable for acceleration-sensitive structures. In contrast, seismic dampers installed in columns exhibit superior control over inter-storey drift and internal force demand by dissipating seismic energy through hysteretic behavior. The comparative assessment highlights that while both systems considerably enhance seismic resilience, their effectiveness is strongly influenced by building height, functional requirements, soil conditions, and retrofitting feasibility. The study provides practical insights and design-oriented guidance for selecting appropriate seismic protection strategies in performance-based earthquake-resistant design.
Keywords Base Isolation, Seismic Dampers, Earthquake Engineering, Storey Drift, Base Shear, Response Spectrum Analysis.
Field Engineering
Published In Volume 7, Issue 6, November-December 2025
Published On 2025-12-21
DOI https://doi.org/10.36948/ijfmr.2025.v07i06.64282
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