Monopile Foundation Stiffness Estimation of an Instrumented Offshore Wind Turbine through Model Updating

Table 4

Local soil stratigraphy, basic soil characteristics, and API/DNVGL p-y parameters, recommended by the wind farm consultant Geotechnical Investigation Report.

Depth bgl	Description	(°)	RD (%)	e0	γ’ (kN/m^3)	J	ε50 (%)
−1 m–0 m	Scour protection	—	—	—	20.0	—	—
0–1.5 m	Medium dense sand	35	60	0.685	19.5	—	—
1.5–8 m	Very dense sand	40	100	0.536	19.5	—	—
8 m +	Overconsolidated clay	—	—	—	18	0.25	0.7