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    Wave-induced seabed residual response and liquefaction around a mono-pile foundation with various embedded depth

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    Accepted manuscript (597.3Kb)
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    Publication date
    2019-01
    Author
    Sui, T.
    Zhang, C.
    Jeng, D-S.
    Guo, Yakun
    Zheng, J.
    Zhang, W.
    Shi, J.
    Keyword
    Wave loading
    Seabed residual response
    Inertial terms
    Pile foundation
    Embedded depth
    Liquefaction
    Rights
    © 2019 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
    Peer-Reviewed
    Yes
    
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    Abstract
    Wave-induced seabed instability caused by the residual liquefaction of seabed may threaten the safety of an offshore foundation. Most previous studies have focused on the structure that sits on the seabed surface (e.g., breakwater and pipeline), a few studies investigate the structure embedded into the seabed (e.g. a mono-pile). In this study, by considering the inertial terms of pore fluid and soil skeleton, a three-dimensional (3D) integrated model for the wave-induced seabed residual response around a mono-pile is developed. The model is validated with five experimental tests available in the literature. The proposed model is then applied to investigate the spatial and temporal pattern of pore pressure accumulation as well as the 3D liquefaction zone around a mono-pile. The numerical simulation shows that the residual pore pressure in front of a pile is larger than that at the rear, and the seabed residual response would be underestimated if the inertial terms of pore fluid and soil skeleton are neglected. The result also shows that the maximum residual liquefaction depth will increase with the increase of the embedded depth of the pile.
    URI
    http://hdl.handle.net/10454/17990
    Version
    Accepted Manuscript
    Citation
    Sui T, Zhang C, Jeng D-S et al (2019) Wave-induced seabed residual response and liquefaction around a mono-pile foundation with various embedded depth. Ocean Engineering. 173: 157-173.
    Link to publisher’s version
    https://doi.org/10.1016/j.oceaneng.2018.12.055
    Type
    Article
    Collections
    Engineering and Informatics Publications

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