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Combined optimization of friction-based isolators in liquid storage tanks

Tsipianitis Alexandros, Spachis Andreas, Tsompanakis Ioannis

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URIhttp://purl.tuc.gr/dl/dias/12E7E934-1548-426D-BBF5-C6E7F0D64B7F-
Identifierhttps://doi.org/10.3390/app12199879-
Identifierhttps://www.mdpi.com/2076-3417/12/19/9879-
Languageen-
Extent20 pagesen
TitleCombined optimization of friction-based isolators in liquid storage tanksen
CreatorTsipianitis Alexandrosen
CreatorΤσιπιανιτης Αλεξανδροςel
CreatorSpachis Andreasen
CreatorΣπαχης Ανδρεαςel
CreatorTsompanakis Ioannisen
CreatorΤσομπανακης Ιωαννηςel
PublisherMDPIen
Content SummaryLarge-scale tanks are widely used for storing chemicals and fuels. Their failure due to natural (e.g., earthquakes) and/or man-made hazards can lead to disastrous consequences. Nonetheless, they are often constructed in seismic-prone regions. For this reason, base isolation is often used for the seismic protection of large tanks, aiming to “decouple” the superstructure from the imposed ground motions. In this study, a combined optimization formulation is presented in order to further improve the seismic response of a base-isolated tank. The main aim is to optimize both the critical design parameters and the placement of the minimum number of isolators at the base of the tank. In particular, a Cuckoo Search (CS) optimizer is used to optimize the dynamic performance of liquid storage tanks, isolated either via single friction pendulum bearings (SFPB) or triple friction pendulum bearings (TFPB). The main objective is to minimize the eccentricity between the center of mass and the center of rigidity of the isolation system, while appropriate constraints are also imposed. Several cases are examined, while the results are compared with respect to isolator displacement fragility curves, as well as the reduced accelerations at the base of the tank. According to the findings of this study, the tank industry can significantly benefit from the proposed approach, as a more cost-efficient design of the base-isolation system of large-scale tanks can be achieved, i.e., using fewer isolators with optimal key parameters.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2023-08-24-
Date of Publication2022-
SubjectLiquid storage tanksen
SubjectDynamic responseen
SubjectSeismic isolationen
SubjectSizing optimizationen
SubjectCombined optimizationen
SubjectCuckoo Searchen
Bibliographic CitationA. Tsipianitis, A. Spachis, and Y. Tsompanakis, “Combined optimization of friction-based isolators in liquid storage tanks,” Appl. Sci., vol. 12, no. 19, Sep. 2022, doi: 10.3390/app12199879.en

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