A review on fluid-sediment and foundation-sediment coupling mechanisms and anti-scour countermeasures

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2025-05-27 DOI:10.1016/j.marstruc.2025.103843

Fei Sha, Jingze Xu, Shijiu Gu, Yulong Dong, Wenwen Xiao

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引用次数: 0

Abstract

Offshore wind turbines (OWTs) have development prospects in the world energy supply system, and the local scour of the foundation of such turbines is an issue that may hinder their normal operation. Based on existing research, local scour characteristics based on fluid-sediment coupling are presented. At the individual soil particles or groups of particles level, the initiation mechanism of foundation scour is explained based on the force equilibrium of seabed particles, whereas at the scour hole level, the shapes and maximum scour depths are considered. Second, the local scour effects based on foundation-seabed coupling are discussed in terms of the lateral bearing capacity, p-y curve, and natural frequency. The study of fluid-sediment and foundation-sediment coupling mechanisms can clarify the protection mechanism of scour protection measures as well as the enhancement of protection. From the perspective of foundation scour control, different scour monitoring methods are analysed. The effects of different types of scour protection are also emphasised. Finally, the current problems and future research directions are presented. This paper provides insights into reducing the occurrence of the scour phenomenon, realising prevention and control of local foundation scour, and ensuring the normal and safe operation of OWTs.

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流沙、基沙耦合机理及抗冲刷对策综述

海上风电机组在世界能源供应体系中具有广阔的发展前景，而海上风电机组基础的局部冲刷问题是影响其正常运行的重要问题。在已有研究的基础上，提出了基于流沙耦合的局部冲刷特性。在单个土粒或颗粒群水平上，基于海底颗粒的力平衡来解释地基冲刷的起动机制，而在冲刷孔水平上，则考虑冲刷孔的形状和最大冲刷深度。其次，从横向承载力、p-y曲线和固有频率等方面讨论了基于地基-海床耦合的局部冲刷效应。研究流沙耦合机制和地基-底泥耦合机制，可以阐明冲刷防护措施的防护机理，提高防护效果。从基础冲刷控制的角度出发，分析了不同的冲刷监测方法。还强调了不同类型的冲刷防护的效果。最后，提出了目前存在的问题和今后的研究方向。为减少冲刷现象的发生，实现对局部基础冲刷的防治，保证水轮机的正常安全运行提供了有益的见解。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.