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An optimal nonlinear fractional order controller for passive/active base isolation building equipped with friction-tuned mass dampers

Akbari, Morteza; Zamani, Abbas-Ali; Seifi, Mohammad; Pantò, Bartolomeo; Falborski, Tomasz; Jankowski, Robert

Authors

Morteza Akbari

Abbas-Ali Zamani

Mohammad Seifi

Tomasz Falborski

Robert Jankowski



Abstract

This paper presents an optimal nonlinear fractional-order controller (ONFOC) designed to reduce the seismic responses of tall buildings equipped with a base-isolation (BI) system and friction-tuned mass dampers (FTMDs). The parameters for the BI and FTMD systems, as well as their combinations (BI-FTMD and active BI-FTMD or ABI-FTMD), were optimized separately using a multi-objective quantum-inspired seagull optimization algorithm (MOQSOA). The seismic performances of the BI, FTMD, BI-FTMD, and ABI-FTMD systems for a 15-storey building subjected to two far-field (Loma Prieta and Landers) and two near-fields (Tabas and Northridge) earthquakes were evaluated. The results indicated that structures with BI, FTMD, BI-FTMD, and ABI-FTMD systems outperformed the uncontrolled structure in reducing structural responses during the design earthquakes (Loma Prieta and Tabas). However, under validation earthquakes (Landers and Northridge), the peak acceleration of the building with the FTMD system was worse than that of the uncontrolled structure during the near-field Tabas earthquake. To address this issue, we proposed a combination of the active BI system and the FTMD system. Time history analysis results demonstrated that for the building equipped with the ABI-FTMD system, the peak displacement, peak acceleration, and peak inter-storey drift were reduced by approximately 60%, 64%, and 78%, respectively, as compared to the uncontrolled structure.

Citation

Akbari, M., Zamani, A.-A., Seifi, M., Pantò, B., Falborski, T., & Jankowski, R. (2025). An optimal nonlinear fractional order controller for passive/active base isolation building equipped with friction-tuned mass dampers. Communications in Nonlinear Science and Numerical Simulation, 140(Part 1), Article 108405. https://doi.org/10.1016/j.cnsns.2024.108405

Journal Article Type Article
Acceptance Date Oct 21, 2024
Online Publication Date Oct 22, 2024
Publication Date 2025-01
Deposit Date Oct 28, 2024
Journal Communications in Nonlinear Science and Numerical Simulation
Print ISSN 1007-5704
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 140
Issue Part 1
Article Number 108405
DOI https://doi.org/10.1016/j.cnsns.2024.108405
Public URL https://durham-repository.worktribe.com/output/2988796