A numerical study on the ultimate load of offshore two-planar tubular TT-joints reinforced with internal ring stiffeners at fire-induced elevated temperatures
Article
Article Title | A numerical study on the ultimate load of offshore two-planar tubular TT-joints reinforced with internal ring stiffeners at fire-induced elevated temperatures |
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ERA Journal ID | 4710 |
Article Category | Article |
Authors | Azari-Dodaran, Neda (Author) and Ahmadi, Hamid (Author) |
Journal Title | Ocean Engineering |
Journal Citation | 230, pp. 1-15 |
Article Number | 108797 |
Number of Pages | 15 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0029-8018 |
1873-5258 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.oceaneng.2021.108797 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0029801821002328 |
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 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. |
Keywords | Ultimate capacity, Parametric design equation, Internal ring stiffener, Multi-planar circular hollow section TT-Joint, Compressive load, Fire resistance |
ANZSRC Field of Research 2020 | 401504. Ship and platform structures (incl. maritime hydrodynamics) |
400510. Structural engineering | |
400507. Fire safety engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Tabriz, Iran |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7932/a-numerical-study-on-the-ultimate-load-of-offshore-two-planar-tubular-tt-joints-reinforced-with-internal-ring-stiffeners-at-fire-induced-elevated-temperatures
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