A passive shape-memory-alloy–rubber-bearing isolator has been developed for seismic protection of offshore jacket platforms. Mathematical modelling of an offshore jacket platform subjected to earthquake ground motions was undertaken, after which a systematic study of the key parameters of the isolator was undertaken to investigate its efficiency and to improve its performance. Dynamic time history analyses were carried out for both isolated and non-isolated jacket platforms using scaled ground motions. These clearly indicated the effectiveness of the isolator in controlling the overall responses of the jacket platform. It was better at mitigating structural displacement than structural acceleration, and its performance was dependent on the duration of ground motion.
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1 November 2023
Research Article|
August 18 2021
A passive shape-memory-alloy–rubber-bearing seismic isolator for offshore platforms Available to Purchase
Soumi Rajbanshi;
Soumi Rajbanshi
Postgraduate student, Department of Civil Engineering, National Institute of Technology, Durgapur, India (corresponding author: soumi7492@gmail.com)
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Diptesh Das
Diptesh Das
Associate Professor, Department of Civil Engineering, National Institute of Technology, Durgapur, India
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Publisher: Emerald Publishing
Received:
May 29 2021
Accepted:
May 29 2021
Online ISSN: 1751-7702
Print ISSN: 0965-0911
Emerald Publishing Limited: All rights reserved
2021
Proceedings of the Institution of Civil Engineers - Structures and Buildings (2023) 176 (11): 857–867.
Article history
Received:
May 29 2021
Accepted:
May 29 2021
Citation
Rajbanshi S, Das D (2023), "A passive shape-memory-alloy–rubber-bearing seismic isolator for offshore platforms". Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 176 No. 11 pp. 857–867, doi: https://doi.org/10.1680/jstbu.20.00225
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