Hydrodynamic behaviour of composite bucket foundation with random waves

Song, Haoyang; Yu, Tongshun; Yu, Dao‐Yi; Zhao, Zishuai

doi:10.1016/j.oceaneng.2023.114774

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…The results show that CBFs are safer than MBFs during earthquakes. Yu TS et al [14,15] studied the dynamic response characteristics of the CBF, considering the combination of wave and current loads. Liu GW et al [16] conducted a three-dimensional numerical simulation to calculate the wave forces on the CBF and suggest the selection of the Morison equation or diffraction theory using the relative diameter of the CBF.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Methodology and Measurement of Dynamic Characteristics of Wind Turbines with Composite Bucket Foundations

Lian,

Zhou,

Dong

2024

JMSE

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A composite bucket foundation (CBF) is a new type of supporting structure in offshore wind engineering. Its huge transition part is the key difference compared to other offshore foundations. Firstly, the vibration measurement system of a wind turbine with the CBF is introduced. A finite element method (FEM) was developed, and the rigid deformation performance of the transition part was characterized. Then, to clarify the influence of the transition part brings to wind turbines with CBFs, a three-DOF theoretical model was established by simplifying the transition part as a rigid body. Horizontal and rotational foundation stiffness were considered to present the constraint effect below the mudline. Sensitivity studies were conducted on the parameters (including mass, moment of inertia and mass center height) of the transition part. Further, the vibration properties of the CBF structures under different operation load conditions were compared through the theoretical model and the in situ data. The results show that the relative errors between the theoretical model and FEM model are 3.78% to 5.03%, satisfying the accuracy requirements. The parameters of the transition part have varying degrees of influence on the natural frequency, foundation stiffness and vibration response of the wind turbines with CBFs. Compared to wind and 1P loads, the 3P load has a greater influence if the 3P frequency is close to the natural frequency of the wind turbine.

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Section: Introductionmentioning

confidence: 99%

A Theoretical Methodology and Measurement of Dynamic Characteristics of Wind Turbines with Composite Bucket Foundations

Lian,

Zhou,

Dong

2024

JMSE

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“…The first is to tow out the bucket foundation through dock or building place and through shallow water. The foundation is raised or lowered by the pressure change of an air-cushion inside the structure; this method was used as part of the first composited bucket foundation, which was towed out from the dock to the construction site in 2010 [11,12]. The second application is to improve efficiency and reduce the cost of installing offshore wind turbines.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Motion Characteristics of Air-Floating Tripod Bucket Foundation during Free Floating

Liu,

Ding,

et al. 2024

JMSE

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In recent years, multi-bucket foundations have been studied and gradually adopted in engineering practices as a novel foundation for offshore wind turbines within a range of water depth of 30 to 50 m. This study investigated the motion characteristics of air-floating tripod bucket foundation (AFTBF) through a series of experiments during free air-floating. The experimental results show that the surge force appears to be the most important factor influencing pitch moment and motion, whether it is a change in water depth or a draft for AFTBF. The maximum amplitudes of surge acceleration and pitch angle show a trend of increasing with narrower spacing and decreasing with wider spacing, while the heave acceleration shows an opposite trend. The added mass and damping of heave motion for AFTBF increase with shallower water due to the increasing pressure difference between the inside and bottom of bucket foundation. The shallower the water depth and the larger the draft, the longer the resonance period of heave.

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Theoretical analysis of wave run-up on the composite bucket foundation under wave action

Yu,

Song,

Bian

et al. 2024

Ocean Engineering

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Hydrodynamic behaviour of composite bucket foundation with random waves

Cited by 5 publications

References 39 publications

A Theoretical Methodology and Measurement of Dynamic Characteristics of Wind Turbines with Composite Bucket Foundations

A Theoretical Methodology and Measurement of Dynamic Characteristics of Wind Turbines with Composite Bucket Foundations

Experimental Investigation on the Motion Characteristics of Air-Floating Tripod Bucket Foundation during Free Floating

Theoretical analysis of wave run-up on the composite bucket foundation under wave action

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