Performance of riprap armour at vibrating offshore wind turbine monopile foundations

Tang, Zihao; Melville, Bruce; Shamseldin, Asaad Y.; Singhal, Naresh; Guan, Dawei; Stolte, Andrew

doi:10.1016/j.coastaleng.2023.104392

Cited by 3 publications

(4 citation statements)

References 36 publications

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“…Alongside water, another type of sinking was found to be induced by vibration [55]. The authors of [55] noted that the subsidence caused by a convective domain from vibration can subside and densify soil and then mitigate flowinduced subsidence through limiting riprap edge scour and winnowing failure, indicating that vibration frequency is positively associated with subsidence speed and vibration amplitude dominates the subsidence degree.…”

Section: Riprap Scour Protection Measuresmentioning

confidence: 99%

“…Additionally, they found that different contact mechanisms between the riprap protection and the monopile structure can largely affect the reliability index, in which the reliability index of no connection is much smaller than that of close contact. Additionally, another study [55] investigated the effect of riprap protection performance in the context of vibration and cyclic loads; these loads are caused by the combined action of turbine operation and a hydraulic regime. Riprap with a larger size has better subsidence resistance ability [55].…”

Section: Riprap Scour Protection Measuresmentioning

confidence: 99%

“…Additionally, another study [55] investigated the effect of riprap protection performance in the context of vibration and cyclic loads; these loads are caused by the combined action of turbine operation and a hydraulic regime. Riprap with a larger size has better subsidence resistance ability [55].…”

Section: Riprap Scour Protection Measuresmentioning

confidence: 99%

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Scour Protection Measures for Offshore Wind Turbines: A Systematic Literature Review on Recent Developments

Wei,

Malekjafarian,

Salauddin

2024

Energies

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Offshore wind energy is considered as one of the most promising resources of clean and renewable energy to replace fossil fuels. Additionally, its cost is expected to be lower than onshore wind energy as the technology matures. Offshore wind turbines (OWTs) normally operate in harsh ocean environments, which could impact their structural integrity. Scour erosion around foundations of OWTs can substantially change the overall stiffness of these structures and shorten their lifetime. Currently, there are a limited number of studies on countermeasures and their engineering requirements for decreasing the scouring effect; this is due to their different hydraulic circumstances, such as their stability, reliability, and resistance capacity. To this end, advancements in scour protection measures in the offshore energy sector are evaluated in this paper through a thorough and critical review following the PRISMA systematic literature mapping approach. This includes 68 papers on scour protection and over 30 scour protection designs for various types of wind turbine foundations. Here, we aim to provide an overview of the latest scouring protection measures and their comprehensive assessment, as well as their prospects and future challenges. The findings of this study will provide key insights into scour protection measures for OWTs and will subsequently contribute to the future growth of the offshore renewable energy sector.

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Section: Riprap Scour Protection Measuresmentioning

confidence: 99%

Section: Riprap Scour Protection Measuresmentioning

confidence: 99%

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Scour Protection Measures for Offshore Wind Turbines: A Systematic Literature Review on Recent Developments

Wei,

Malekjafarian,

Salauddin

2024

Energies

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“…Relevant design empirical formulas can be applied for the design of riprap protection schemes. Combining turbulence-inducing protective measures with riprap protection can mitigate the occurrence of riprap failure [100,120].…”

Section: Applicability Analysis Of Scour Protection Schemesmentioning

confidence: 99%

A Review and Design Principle of Fixed-Bottom Foundation Scour Protection Schemes for Offshore Wind Energy

Gao,

Pan,

Liang

et al. 2024

JMSE

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Foundation scour is the erosion of sediments around pile foundations by wave and current in offshore wind energy. This phenomenon destabilizes foundations and poses a threat to pile safety. Therefore, scour protection becomes a crucial challenge in offshore wind projects. This paper reviews and synthesizes recent publications and patented technologies related to scour protection. Considering the primary engineering concerns, the paper proposes design principles for effective scour protection schemes to standardize evaluation criteria. These principles prioritize efficacy, independence, and cost-efficiency, enabling the analysis of scour protection scheme applicability. In addition, this paper summarizes and describes common protection schemes in the literature. The effectiveness of their protection is analyzed and summarized, and their economic and performance independence is evaluated. This paper categorizes flow-altering scour protection schemes found in the literature. Based on a comprehensive understanding of the mechanisms and engineering requirements of scour protection, the paper proposes a focus on determining the erosion reduction rate curve (Ep−U/Uc curve) as a key criterion for evaluating the effectiveness of protection schemes under varying flow velocities and the erosion reduction rate of scour protection schemes under extreme conditions. The study highlights the necessity of establishing a comprehensive design evaluation methodology, which is crucial for addressing the significant challenges related to scour encountered in offshore wind power projects.

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Experimental study of bed solidification as a local scour countermeasure for offshore wind turbine monopile foundations

Tang,

Melville,

Shamseldin

et al. 2024

Ocean Engineering

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Performance of riprap armour at vibrating offshore wind turbine monopile foundations

Cited by 3 publications

References 36 publications

Scour Protection Measures for Offshore Wind Turbines: A Systematic Literature Review on Recent Developments

Scour Protection Measures for Offshore Wind Turbines: A Systematic Literature Review on Recent Developments

A Review and Design Principle of Fixed-Bottom Foundation Scour Protection Schemes for Offshore Wind Energy

Experimental study of bed solidification as a local scour countermeasure for offshore wind turbine monopile foundations

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