An experimental study of the local scour protection methods around the monopile foundation of offshore wind turbines

Wang, Guangyao; Shi, Xu; Zhang, Qinghe; Zhang, Jinfeng

doi:10.1016/j.oceaneng.2023.113957

Cited by 9 publications

(8 citation statements)

References 14 publications

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“…Later, a life cycle assessment following the cradle-to-grave approach was conducted by Hoyme et al [78], where the authors observed the environmental benefits of GSCs. Another study [79] proposed a sand-ribbed geotextile mattress (SRGM) (Figure 10), bionic grass (discussed in Section 3.1.3), and a honeycomb grid geocell (Figure 11) as scouring protection materials. Li et al [79] found that the SRGM coverage is the most effective scour protection method among them.…”

Section: Ground Improvement Protectionmentioning

confidence: 99%

“…Another study [79] proposed a sand-ribbed geotextile mattress (SRGM) (Figure 10), bionic grass (discussed in Section 3.1.3), and a honeycomb grid geocell (Figure 11) as scouring protection materials. Li et al [79] found that the SRGM coverage is the most effective scour protection method among them. The SRGM is a novel variant of a geotextile mattress, and it is a combination of high-strength geotextiles as a flexible framework and sand as a filling.…”

Section: Ground Improvement Protectionmentioning

confidence: 99%

“…One study [79] pointed out that the SRGM is very likely to have a negative impact on the local environment and species. As for honeycomb grid geocells, these small-size grids have better anti-shear and scour protection abilities than large-size grids.…”

Section: Ground Improvement Protectionmentioning

confidence: 99%

“…The SRGM is a novel variant of a geotextile mattress, and it is a combination of high-strength geotextiles as a flexible framework and sand as a filling. One study [79] pointed out that the SRGM is very likely to have a negative impact on the local environment and species. As for honeycomb grid geocells, these smallsize grids have better anti-shear and scour protection abilities than large-size grids.…”

Section: Ground Improvement Protectionmentioning

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: Ground Improvement Protectionmentioning

confidence: 99%

Section: Ground Improvement Protectionmentioning

confidence: 99%

Section: Ground Improvement Protectionmentioning

confidence: 99%

Section: Ground Improvement Protectionmentioning

confidence: 99%

See 2 more Smart Citations

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

Wei,

Malekjafarian,

Salauddin

2024

Energies

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show abstract

“…On the other hand, current scour protection measures cannot completely avoid scour and have their own shortcomings. For example, armouring protection has the disadvantage that the projectile cannot be accurately cast in complex sea conditions and is easy to be washed away (Wang et al, 2023;Zhang et al, 2023). Flow-altering protection has the disadvantages of high cost and changing the dynamic characteristics of the foundation (Tang et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Effect of scour on the fatigue life of offshore wind turbines and its prevention through passive structural control

Cao,

Wu,

Yang

et al. 2024

Wind Energ. Sci.

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Abstract. Offshore wind turbine (OWT) support structures are exposed to the risk of fatigue damage and scour, and this risk can be effectively mitigated by installing structural control devices such as tuned mass dampers (TMDs). However, time-varying scour altering OWTs' dynamic characteristics has an impact on the TMD design and fatigue life, which has rarely been studied before. In this paper, a simplified modal model is used to investigate the influence of scour and a TMD on the fatigue life evaluation of a 5 MW OWT's support structure, and a traditional method and a newly developed optimization technique are both presented to obtain TMD parameters. This optimization technique aims at finding optimal parameters of the TMD which maximize the fatigue life of a hotspot at the mudline, and the effect of time-varying scour can be considered. This study assumes that the TMD operates in the fore–aft (FA) direction, while the vibration in the side–side (SS) direction is uncontrolled. Results show that scour can decrease the fatigue life by about 24.1 % and that the TMD can effectively suppress vibration and increase the fatigue life. When the scour depth reaches 1.3 times the pile diameter, the TMD with a mass ratio of 1 % can increase the fatigue life of an OWT's support structure by about 64.6 %. Further, it is found that the fatigue life can be extended by 25 % with the TMD optimized by the proposed optimization technique rather than using a traditional design method which does not take the change in dynamic characteristics into account.

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Countermeasures for local scour around offshore wind turbine monopile foundations: A review

Zhang,

Chen,

Yan

et al. 2023

Applied Ocean Research

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An experimental study of the local scour protection methods around the monopile foundation of offshore wind turbines

Cited by 9 publications

References 14 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

Effect of scour on the fatigue life of offshore wind turbines and its prevention through passive structural control

Countermeasures for local scour around offshore wind turbine monopile foundations: A review

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