Experimental and numerical study of the ultimate load for collar-plate-reinforced tubular K-joints at fire-induced elevated temperatures

Azari-Dodaran, Neda and Ahmadi, Hamid ORCID: https://orcid.org/0000-0002-6192-6275 and Zhu, Lie and Li, Peiyang (2022) Experimental and numerical study of the ultimate load for collar-plate-reinforced tubular K-joints at fire-induced elevated temperatures. Ships and Offshore Structures, 17 (5). pp. 1159-1177. ISSN 1744-5302


Abstract

The fire resistance of collar-plate-stiffened uniplanar tubular K-joints was studied and formulated in the present research. After establishing a finite element (FE) model and its verification against the results of experimental tests, a total of 1440 numerical simulations were performed on 360 FE models of collar-plate-stiffened uniplanar tubular K-joints at four different temperatures (20, 400, 550, and 700°C). The studied joints were analysed under the axial loading and the reinforcing effect of the collar plate was investigated. Results showed that the resistance enhancement coefficient (Rs) increases by increasing the γ, θ, and τ; while it decreases by rising the β. Results of the parametric investigation were utilised to establish new design equations to determine the bearing capacity of collar-plate-stiffened tubular K-joints under the brace axial loads at fire condition.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 28 Jul 2022 03:31
Last Modified: 28 Jul 2022 03:31
Uncontrolled Keywords: Ultimate capacity, Parametric design equation, Collar plate, Uniplanar CHS K-joint, Axial load, Fire resistance
Fields of Research (2020): 40 ENGINEERING > 4015 Maritime engineering > 401504 Ship and platform structures (incl. maritime hydrodynamics)
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4005 Civil engineering > 400507 Fire safety engineering
Socio-Economic Objectives (2020): 17 ENERGY > 1702 Energy exploration > 170203 Oil and gas exploration
Identification Number or DOI: https://doi.org/10.1080/17445302.2021.1897221
URI: http://eprints.usq.edu.au/id/eprint/50506

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