Failure Envelopes of Composite Bucket Foundation for Offshore Wind Turbines under Combined Loading with considering Different Scour Depths

Table 4

Values of parameters α and β.

Sd	= 0.25		= 0.50		= 0.75
	α	β	α	β	α	β
No scouring	2.17	0.49	2.16	0.40	2.07	0.32
d/12	2.29	0.50	2.14	0.39	2.16	0.32
d/6	2.06	0.44	2.16	0.36	2.17	0.26
d/4	2.26	0.40	2.19	0.31	2.34	0.21