DOI: 10.5592/CO/HG.2026.11
Autori: IVA MEJAŠIĆ , LEON KUČINIĆ , KENNETH GAVIN , IRINA STIPANOVIĆ
Sažetak:
Armourstone is an essential scour mitigation solution for monopile foundations of offshore wind turbines. Multiple design approaches exist with unclear performance comparisons. This paper implements and compares three approaches, De Vos et al. (2011) Static, De Vos et al. (2012) Dynamic and DNV RP-0618 (2022) under identical conditions which represent 50- year return period wave in combination with 5-year return period water depth and current velocity. Three methods produce required median stone size in range from 9.1 to 32.7 cm which can be attributed to different stability philosophy and orbital velocity formulations. Parametric sensitivity showcases that wave height and water depth dominate change in required median stone size for all approaches while current velocity contributes the least. DNV approach produces the smallest required stone while Dynamic approach reduces sensitivity to all parameters in comparison to zero-movement Static Approach. Field validation of competing orbital velocity formulations is needed to resolve the difference in spread of calculation results.