Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform
Steel jacket offshore platforms are typically employed for use in shallow to moderate water depths. During platform operations, there have been some historical accidents completely damaging the diagonal members of the bracing systems due to explosions, fire accidents and dropped objects. Differen...
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th-mahidol.479312023-03-30T22:17:31Z Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform M.S. Azad Wonsiri Punurai Chana Sinsabvarodom Pornpong Asavadorndeja Mahidol University. Faculty of Engineering. Department of Civil and Environmental Engineering Norwegian University of Science and Technology. Department of Marine Technology Synterra Co., Ltd Jacket platform Redundancy analysis Plastic hinges Fragility curve Steel jacket offshore platforms are typically employed for use in shallow to moderate water depths. During platform operations, there have been some historical accidents completely damaging the diagonal members of the bracing systems due to explosions, fire accidents and dropped objects. Different locations of damaged bracings demonstrate different levels of risk for safety and integrity of the structures. This research illustrates the effects of redundancy in the bracing systems for steel jacket offshore platforms. Assessments have been carried out using the nonlinear pushover analysis method and formations of nonlinear hinges of different members were noted. Redundancy in different positions has been considered to investigate the consequences. Reserve strength ratio (RSR) and damage strength ratio (DSR) of the global structure were also evaluated to understand the importance of different local members. From the collapse data of local failures, fragility curves for the global structures were estimated. The results demonstrated that the position of damage can be a great concern which affects the overall performance of the structures. 2019-10-21T07:12:37Z 2019-10-21T07:12:37Z 2019-10-21 2019 Research Article Engineering Journal. Vol.23, No.1 (2019), 123-133 10.4186/ej.2019.23.1.123 https://repository.li.mahidol.ac.th/handle/123456789/47931 eng Mahidol University Faculty of Engineering Chulalongkorn University application/pdf |
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Jacket platform Redundancy analysis Plastic hinges Fragility curve |
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Jacket platform Redundancy analysis Plastic hinges Fragility curve M.S. Azad Wonsiri Punurai Chana Sinsabvarodom Pornpong Asavadorndeja Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
description |
Steel jacket offshore platforms are typically employed for use in shallow to
moderate water depths. During platform operations, there have been some historical
accidents completely damaging the diagonal members of the bracing systems due to
explosions, fire accidents and dropped objects. Different locations of damaged bracings
demonstrate different levels of risk for safety and integrity of the structures. This research
illustrates the effects of redundancy in the bracing systems for steel jacket offshore
platforms. Assessments have been carried out using the nonlinear pushover analysis
method and formations of nonlinear hinges of different members were noted.
Redundancy in different positions has been considered to investigate the consequences.
Reserve strength ratio (RSR) and damage strength ratio (DSR) of the global structure were
also evaluated to understand the importance of different local members. From the collapse
data of local failures, fragility curves for the global structures were estimated. The results
demonstrated that the position of damage can be a great concern which affects the overall
performance of the structures. |
author2 |
Mahidol University. Faculty of Engineering. Department of Civil and Environmental Engineering |
author_facet |
Mahidol University. Faculty of Engineering. Department of Civil and Environmental Engineering M.S. Azad Wonsiri Punurai Chana Sinsabvarodom Pornpong Asavadorndeja |
format |
Article |
author |
M.S. Azad Wonsiri Punurai Chana Sinsabvarodom Pornpong Asavadorndeja |
author_sort |
M.S. Azad |
title |
Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
title_short |
Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
title_full |
Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
title_fullStr |
Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
title_full_unstemmed |
Effects of Redundancy in Bracing Systems on the Fragility Curve Development of Steel Jacket Offshore Platform |
title_sort |
effects of redundancy in bracing systems on the fragility curve development of steel jacket offshore platform |
publishDate |
2019 |
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https://repository.li.mahidol.ac.th/handle/123456789/47931 |
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1763492125637345280 |