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• W3008182793 endingPage "102728" @default.
• W3008182793 startingPage "102728" @default.
• W3008182793 abstract "Subsea pipelines exposed to high temperature and high pressure (HTHP) conditions is susceptible to lateral buckling. In order to control lateral buckling, engineered buckle initiators, such as sleepers, are introduced to initiate planned lateral buckles along the pipeline at specific locations in order to ensure that the stress in each lateral buckle remains acceptable. In this study, taking the interaction of adjacent buckles into account, analytical solutions of antisymmetric lateral buckling mode triggered by sleepers are derived. With the proposed formulations, the method to obtain the accurate locations of lateral displacement amplitude and maxima of bending stress is presented and discussed. And a detailed comparison between symmetric and antisymmetric mode of lateral buckling triggered by single sleeper is presented. Moreover, the influence of the sleeper spacing on controlled lateral buckling behaviour with the consideration of axial interaction between adjacent buckles is conducted. Finally, a detailed analysis about the influence of the sleeper height, lateral frictional coefficient and submerged weight of the pipeline on the controlled post-buckling behaviour is presented. Our results show that, for smaller sleeper friction or smaller sleeper height, the symmetric mode is more likely to happen, while the antisymmetric mode is prone to occur for larger sleeper friction and larger sleeper height. One effective method to reduce displacement amplitude and maximum stress is to decrease the sleeper spacing. The minimum critical temperature difference decreases with increasing sleeper height and increases with increasing lateral friction coefficient or submerged weight of the pipeline. And an alternative way to reduce the maximum stress is to reduce the lateral friction coefficient or submerged weight of the pipeline even though the displacement amplitude increases." @default.
• W3008182793 created "2020-03-06" @default.
• W3008182793 creator A5022313812 @default.
• W3008182793 creator A5026353446 @default.
• W3008182793 date "2020-05-01" @default.
• W3008182793 modified "2023-09-27" @default.
• W3008182793 title "Analytical study on controlled lateral thermal buckling of antisymmetric mode for subsea pipelines triggered by sleepers" @default.
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• W3008182793 doi "https://doi.org/10.1016/j.marstruc.2020.102728" @default.
• W3008182793 hasPublicationYear "2020" @default.
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