Abstract: The present invention is a grouting method for single pile rock-socketed foundation for offshore wind power, comprising: driving a steel casing into an overburden layer to dig the overburden layer and a rock stratum so as to dig a pile hole; hoisting a steel pipe pile into the steel casing and positioning the steel pipe pile in the pile hole, wherein an annular cavity is formed between the inner walls of the steel pipe pile and the pile hole and the bottom of the steel casing; grouting a first grouting layer to the bottom of a pipe hole of the steel pipe pile; grouting a plurality of grouting layers into the upper end of the first grouting layer in the annular cavity; and pulling out the steel casing, wherein after a grouting solution is aged, the steel pipe pile is stably connected to the overburden layer and the rock stratum.

Abstract: The present invention is a grouting method for single pile rock-socketed foundation for offshore wind power, comprising: driving a steel casing into an overburden layer to dig the overburden layer and a rock stratum so as to dig a pile hole; hoisting a steel pipe pile into the steel casing and positioning the steel pipe pile in the pile hole, wherein an annular cavity is formed between the inner walls of the steel pipe pile and the pile hole and the bottom of the steel casing; grouting a first grouting layer to the bottom of a pipe hole of the steel pipe pile; grouting a plurality of grouting layers into the upper end of the first grouting layer in the annular cavity; and pulling out the steel casing, wherein after a grouting solution is aged, the steel pipe pile is stably connected to the overburden layer and the rock stratum.

Abstract: Provided is a cable protection device for subsea cable in offshore wind farm, the cable protection system including: a connecting flange, an intermediate pipe body, a tapered connecting pipe, and a connector. The subsea cable protection device in offshore wind farm has the advantages of simple structure, no segmentation mould making in manufacturing process. During installation and use, the length of the intermediate pipe can be increased or decreased according to actual requirements. Moreover, the cable protection device can be connected to the cable steel tube on the wind turbine foundation via the connecting flange.

Abstract: A construction device for an offshore wind turbine foundation with piling performed later. The construction device comprises an offshore wind turbine foundation (1), a pile casing (2) and a sleeve (3). The pile casing (2) is used for the installation of a steel pile (4) and arranged at the bottom of the offshore wind turbine foundation (1). The lower end of the sleeve (3) is detachably connected with the upper end of the pile casing (2). A construction method for an offshore wind turbine foundation with piling performed later is also provided.

Abstract: A construction device for an offshore wind turbine foundation with piling performed later. The construction device comprises an offshore wind turbine foundation (1), a pile casing (2) and a sleeve (3). The pile casing (2) is used for the installation of a steel pile (4) and arranged at the bottom of the offshore wind turbine foundation (1). The lower end of the sleeve (3) is detachably connected with the upper end of the pile casing (2). A construction method for an offshore wind turbine foundation with piling performed later is also provided.