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

Table 1

Physical parameters of soil.

Soil mass	Effective gravity, γ (kN/m^3)	Elastic modulus, E (MPa)	Friction angle, φ (°)	Cohesion, c (kPa)	Poisson’s ratio, υ
Around the pile (the muddy clay)	7.6	10	28.81	15	0.29
Bottom of pile (the silty clay)	8.2	20	35.75	8	0.32