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Near-trapping effect of wave-cylinders interaction on pore water pressure and liquefaction around a cylinder array
Lin, Z. Pokrajac, D. Guo, Yakun Liao, C. Tang, T.
Lin, Z.
Pokrajac, D.
Guo, Yakun
Liao, C.
Tang, T.
Publication Date
2020-12-15
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© 2020 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 (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2020-08-30
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Abstract
The near-trapping effects on wave-induced dynamic seabed response and liquefaction close to a multi-cylinder foundation in storm wave conditions are examined. Momentary liquefaction near multi-cylinder structures is simulated using an integrated wave-structure-seabed interaction model. The proposed model is firstly validated for the case of interaction of wave and a four-cylinder structure, with a good agreement with available experimental measurements. The validated model is then applied to investigate the seabed response around a four-cylinder structure at 0° and 45° incident angles. The comparison of liquefaction potential around individual cylinders in an array shows that downstream cylinder is well protected from liquefaction by upstream cylinders. For a range of incident wave parameters, the comparison with the results for a single pile shows the amplification of pressure within the seabed induced by progressive wave. This phenomenon is similar to the near-trapping phenomenon of free surface elevation within a cylinder array.
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Accepted manuscript
Citation
Lin Z, Pokrajac D, Guo Y et al (2020) Near-trapping effect of wave-cylinders interaction on pore water pressure and liquefaction around a cylinder array. Ocean Engineering. 218: 108047.
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Article