THE APPLICABILITY OF STONE GABIONS AS SCOUR PROTECTION WORKS AT THE BASE OF MONOPILE OFFSHORE WIND TURBINES

Abstract

 Countermeasures against localized scouring at the base of monopile offshore wind turbines for offshore deployment of monopile offshore wind turbines. Although bag-type rooting materials and crushed stones have been studied as countermeasures, it is necessary to study other construction methods in pursuit of construction convenience and economic efficiency. In this study, the applicability of a stone cage as a scour prevention method was verified through hydraulic model experiments. The stone cage showed the same scour-preventing effect as that of the bag-type rooting material and crushed stone. The maximum scour depth increased in proportion to the clearance between the stone cages. On the other hand, the gaps between stone cages often caused local scouring around each cage, indicating the need to consider the gaps between stone cages when implementing the system.