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  • Physical Model of wave-induced seabed response around trenched pipeline in sandy seabed

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    JengPUB6187.pdf (914.9Kb)
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    Accepted Manuscript (AM)
    Author(s)
    Zhai, Yanyan
    He, Rui
    Zhao, Jialin
    Zhang, Jisheng
    Jeng, Dong-Sheng
    Li, Ling
    Griffith University Author(s)
    Jeng, Dong-Sheng
    Year published
    2018
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    Abstract
    The phenomenon of wave-seabed-pipeline interactions is one of the primary concerns of coastal engineers and researchers, as it could greatly affect the seabed instability and pipeline safety. Numerous researchers have expended great effort in studying wave-seabed-pipeline interactions in the past. However, the majority of them focussed on the wave-induced response around a submarine pipeline, in buried conditions, by numerical models and laboratory experiments. Unlike the previous studies, a series of regular wave experiments and numerical model analyses were conducted to investigate the wave-induced pore pressure in the ...
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    The phenomenon of wave-seabed-pipeline interactions is one of the primary concerns of coastal engineers and researchers, as it could greatly affect the seabed instability and pipeline safety. Numerous researchers have expended great effort in studying wave-seabed-pipeline interactions in the past. However, the majority of them focussed on the wave-induced response around a submarine pipeline, in buried conditions, by numerical models and laboratory experiments. Unlike the previous studies, a series of regular wave experiments and numerical model analyses were conducted to investigate the wave-induced pore pressure in the sandy seabed, around a pipeline with different backfilled depths. The model pipeline with three diameters (D = 6 cm, 8 cm, and 10 cm) is buried in three sizes of sand, d50 = 0.15 mm, d50 = 0.3 mm, and d50 = 0.5 mm, with different backfilled depths. The results show that the pore pressure amplitude in the seabed is a minimum with a backfilled depth D, and a maximum with full backfill or a backfilled depth of zero. The pore-pressure amplitude increases as the backfill sand median diameter increases. The effects of the pipeline diameter on pore-water pressure are also analysed and discussed.
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    Journal Title
    Applied Ocean Research
    Volume
    75
    DOI
    https://doi.org/10.1016/j.apor.2018.02.021
    Copyright Statement
    © 2018 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Oceanography
    Civil engineering
    Resources engineering and extractive metallurgy
    Resources engineering and extractive metallurgy not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/379871
    Collection
    • Journal articles

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