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.
Original language | English |
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Article number | 108047 |
Number of pages | 18 |
Journal | Ocean Engineering |
Volume | 218 |
Early online date | 9 Oct 2020 |
DOIs | |
Publication status | Published - 15 Dec 2020 |
Bibliographical note
AcknowledgementThe authors would like to acknowledge the financial support from Energy Technology Partnership (ETP), Wood Group Kenny, and University of Aberdeen, United Kingdom. Zaibin Lin greatly appreciates the helpful discussion with Dr Dominic van der A from the University of Aberdeen, United Kingdom. The constructive comments from Prof. Dong-Sheng Jeng at Griffith University have greatly improved the quality of the manuscript.
Keywords
- Four-cylinder foundation
- Momentary liquefaction
- Near-trapping phenomenon
- Seabed response
- Wave-structure-seabed interaction (WSSI)