A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Enhancing Seismic Performance of Buildings in Seismic-Prone Regions Through Base Isolation Techniques
Base isolation is one of the popular and powerful earthquake-resistant design strategies adopted for the seismic performance enhancement of structures. The selection of an appropriate isolation device can significantly reduce the engineering demand parameters (e.g., base shear, story displacement, inter-story drift, story acceleration, etc.) and functional disruption caused by earthquakes. The present study investigates the seismic performance enhancement of a five-story reinforced concrete (RC) moment-resisting frame building supplemented with different base isolation strategies. Three types of isolation devices commonly adopted in practice, namely (i) Lead rubber bearing (LRB), (ii) Single friction pendulum bearing (SFPB), and (iii) Triple friction pendulum bearing (TFPB), are evaluated for their effectiveness in improving the seismic response of the isolated building model. The modeling and analysis of the base-isolated building is done using the commercial software SAP2000 with the Fast Nonlinear Analysis (FNA) solver. The isolation systems are modeled using a two-noded nonlinear link element. The influence of the effective isolation period on the dynamic response of the base-isolated building model is investigated under seismic conditions. The effective isolator damping ratio is kept constant throughout the study to facilitate comparative analysis. The study demonstrates that base isolation techniques can effectively enhance the performance of structures in seismic-prone regions. The analysis results highlight the importance of considering the appropriate isolator parameters for base isolation design based on the structure's performance requirement and seismic hazard level of the region.
Enhancing Seismic Performance of Buildings in Seismic-Prone Regions Through Base Isolation Techniques
Base isolation is one of the popular and powerful earthquake-resistant design strategies adopted for the seismic performance enhancement of structures. The selection of an appropriate isolation device can significantly reduce the engineering demand parameters (e.g., base shear, story displacement, inter-story drift, story acceleration, etc.) and functional disruption caused by earthquakes. The present study investigates the seismic performance enhancement of a five-story reinforced concrete (RC) moment-resisting frame building supplemented with different base isolation strategies. Three types of isolation devices commonly adopted in practice, namely (i) Lead rubber bearing (LRB), (ii) Single friction pendulum bearing (SFPB), and (iii) Triple friction pendulum bearing (TFPB), are evaluated for their effectiveness in improving the seismic response of the isolated building model. The modeling and analysis of the base-isolated building is done using the commercial software SAP2000 with the Fast Nonlinear Analysis (FNA) solver. The isolation systems are modeled using a two-noded nonlinear link element. The influence of the effective isolation period on the dynamic response of the base-isolated building model is investigated under seismic conditions. The effective isolator damping ratio is kept constant throughout the study to facilitate comparative analysis. The study demonstrates that base isolation techniques can effectively enhance the performance of structures in seismic-prone regions. The analysis results highlight the importance of considering the appropriate isolator parameters for base isolation design based on the structure's performance requirement and seismic hazard level of the region.
Enhancing Seismic Performance of Buildings in Seismic-Prone Regions Through Base Isolation Techniques
Lecture Notes in Civil Engineering
Goel, Manmohan Dass (editor) / Gupta, Laxmikant M. (editor) / Jaiswal, Omprakash R. (editor) / Kumar, Arun (author) / Menon, Arun (author) / Prasad, A. Meher (author)
Structural Engineering Convention ; 2023 ; Nagpur, India
2025-03-23
9 pages
Article/Chapter (Book)
Electronic Resource
English
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