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Wave-induced seabed residual response and liquefaction around a mono-pile foundation with various embedded depth
Sui, T. Zhang, C. Jeng, D-S. Zheng, J. Zhang, W. Shi, J.
Sui, T.
Zhang, C.
Jeng, D-S.
Zheng, J.
Zhang, W.
Shi, J.
Publication Date
2019-01
End of Embargo
Supervisor
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
Open Access status
openAccess
Accepted for publication
2018-12-22
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Department
Awarded
Embargo end date
Additional title
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.
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.
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Article