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Strength assessment of stiffened blast walls in offshore installations under explosions

Sohn, JM; Kim, SJ; Seo, JK; Kim, BJ; Paik, JK; (2016) Strength assessment of stiffened blast walls in offshore installations under explosions. Ships and Offshore Structures , 11 (5) pp. 551-560. 10.1080/17445302.2015.1035164. Green open access

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Abstract

Offshore installations are exposed to hydrocarbon explosions and/or fire accidents. Especially, explosions lead to serious damages to human, safety, and environment. To minimise and prevent the damage from explosions, blast walls are generally installed in oil and gas production structures. Typical blast walls are classified into flat, corrugated, and stiffened types. Among them, corrugated blast walls are frequently used for reasons such as construction, cost, and energy absorption. However, it has been known that a corrugated type of blast wall buckles between the web and flange under the explosion loads, and loses its stiffness. It means that the buckling phenomenon of a blast wall is closely related to the structural strength. This study investigates on the structural characteristics of a blast wall under quasi-static and dynamic (explosion) loads with or without a flat-plated stiffener. Finally, it can be concluded that the flat type of stiffeners are located at the buckling region to delay the buckling and improve the strength of blast walls.

Type: Article
Title: Strength assessment of stiffened blast walls in offshore installations under explosions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/17445302.2015.1035164
Publisher version: http://doi.org/10.1080/17445302.2015.1035164
Language: English
Additional information: © 2015 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in Ships and Offshore Structures on 24 April 2015, available online: http://www.tandfonline.com/10.1080/17445302.2015.1035164
Keywords: Offshore installations, corrugated blast wall, buckling, stiffened blast wall, nonlinear finite element analysis
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1535320
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