Near-trapping effect of wave-cylinders interaction on pore water pressure and liquefaction around a cylinder array
In: Ocean Engineering. Pergamon: Elmsford. ISSN 0029-8018; e-ISSN 1873-5258, meer
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| Trefwoord |
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| Author keywords |
Wave-structure-seabed interaction (WSSI); Seabed response; Four-cylinder foundation; Near-trapping phenomenon; Momentary liquefaction |
| Auteurs | | Top |
- Lin, Z.
- Pokrajac, D.
- Guo, Y.
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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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