Abstract
In the first phase of C-Power’s offshore wind farm project, six gravity based foundations (GBFs) have been installed 30km offshore of the Belgian Coast, on the Thornton bank in the North Sea. To guarantee the stability of the GBFs, a static scour protection system is designed. One of the challenges during construction is to define a realistic method so that the minimum required layers thicknesses are guaranteed, without placing excessive amounts of material. The feasibility of certain solutions, in relation to the applied equipment and the accuracy of measurements, all have to be taken into account. As a result of numerous discussions between client and contractor, the design has been optimised, been agreed on and immediately tested in practice, during construction of the first phase. Combined with an extensive monitoring program, this allows evaluation of the applied methods.
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