Effect of Reinforced Bucket on Bearing Capacity and Natural Frequency of Offshore Wind Turbines Using Pile–Bucket Foundation

Table 5

The maximum displacement of the pile at the mud surface.

Model type	Displacement under different loads (m)
	1,000 kN	2,000 kN	3,000 kN	4,000 kN	5,000 kN
The single pile foundation (d = 6 m)	15.22	32.47	52.19	75.56	102.01
The pile-bucket foundation (D = 18 m and H = 12 m)	6.75	13.76	21.32	29.64	39.43
The pile-bucket foundation (D = 24 m and H = 6 m)	5.67	11.49	17.71	24.90	33.19
The pile-bucket foundation (D = 24 m and H = 12 m)	4.99	10.07	15.30	20.77	26.59
The pile-bucket foundation (D = 24 m and H = 18 m)	4.67	9.39	14.21	19.17	24.35
The pile-bucket foundation (D = 30 m and H = 12 m)	3.89	7.81	11.80	15.86	20.02