Experimental investigation on scour development and scour protection for offshore converter platform

Local scour around the offshore converter platform caused by current and wave will lead to the instability of foundation. A series of experiments are performed to investigate the scour development and scour protection of the offshore converter platform. The development and evolution characteristics of the local scour around the gravity based structure foundation under the actions of current flow and wave are analyzed. The results show that the edge scour mainly occurs at the lateral sides of the platform and the scour pits are symmetrical about the centerline of the platform in the streamwise flow direction. The scour depth around the gravity based structure increases with the increase of flow velocity. The inclination and collapse of the platform is observed at α = 90° and U₀ = 0.25 m/s. The sand ripples are observed around the gravity based structure under the wave action, and the scour depth increases with the increase of wave height and wave period. Based on the comparisons of different scour protection methods, the combined bionic grass-geotextile-riprap protection has the best scour protection efficiency for the offshore converter platform.

• Record URL:
  https://doi.org/10.1016/j.marstruc.2023.103440
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0951833923000734
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09518339
• Supplemental Notes:
  • © 2023 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Gao, Yangyang
  • Chen, Weiyi
  • Zhou, Peiyuan
  • Du, Fangshu
  • Wang, Lizhong
• Publication Date: 2023-7

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References;
• Pagination: 103440
• Serial:
  • Marine Structures
  • Volume: 90
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0951-8339
  • Serial URL: https://www.sciencedirect.com/journal/marine-structures

Subject/Index Terms

• TRT Terms: Ocean waves; Offshore platforms; Pile foundations; Power converters; Sand; Scour
• Subject Areas: Geotechnology; Hydraulics and Hydrology; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 01885616
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 22 2023 9:49AM