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  • A numerical study on the ultimate load of offshore two-planar tubular TT-joints reinforced with internal ring stiffeners at fire-induced elevated temperatures

    Author(s)
    Azari-Dodaran, N
    Ahmadi, H
    Griffith University Author(s)
    Ahmadi, Hamid
    Year published
    2021
    Metadata
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    Abstract
    The fire resistance of internally ring-stiffened multi-planar tubular TT-joints was studied and formulated in the present paper. TT-joints were examined under axial loading. After developing a finite element (FE) model and its verification against the experimental data, a total of 324 numerical analyses were performed on 81 FE models of internally ring-stiffened multi-planar TT-joints at four different temperatures (20, 400, 550, and 700 °C) subjected to axial loading. The reinforcing effect of internal rings was investigated. Results showed that the resistance enhancement coefficient (Rs) increases by increasing the γ; while ...
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    The fire resistance of internally ring-stiffened multi-planar tubular TT-joints was studied and formulated in the present paper. TT-joints were examined under axial loading. After developing a finite element (FE) model and its verification against the experimental data, a total of 324 numerical analyses were performed on 81 FE models of internally ring-stiffened multi-planar TT-joints at four different temperatures (20, 400, 550, and 700 °C) subjected to axial loading. The reinforcing effect of internal rings was investigated. Results showed that the resistance enhancement coefficient (Rs) increases by increasing the γ; while it decreases by increasing the β. Results of the parametric investigation were utilized to establish a new set of design equations to determine the bearing capacity of internally ring-stiffened multi-tubular TT-joints subjected to brace axial loads at fire-induced elevated temperatures.
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    Journal Title
    Ocean Engineering
    Volume
    230
    DOI
    https://doi.org/10.1016/j.oceaneng.2021.108797
    Subject
    Physical oceanography
    Maritime engineering
    Publication URI
    http://hdl.handle.net/10072/412459
    Collection
    • Journal articles

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