OFFSHORE WIND POWER GENERATION FACILITY AND CONSTRUCTION METHOD THEREFOR

摘要

[Problem] To eliminate the need for work using a special marine vessel at sea, improve workability, reduce work costs, and reduce manufacturing costs. [Solution] A foundation structure 2 is formed centered around a tower 3 in a circular shape when viewed in a plane, and is configured from a central portion 7 in the center in the radial direction, and a peripheral portion 8 arranged on the outer periphery of the central portion. The central portion 7 comprises multiple center-side precast concrete boxes 9 having an external shape that is formed by dividing the central portion into multiple pieces in the circumferential direction, and the central portion is formed by linking the center-side precast boxes 9 in the circumferential direction. The peripheral portion 8 comprises multiple peripheral precast concrete boxes 10 having an external shape that is formed by dividing the peripheral portion into multiple pieces in the circumferential direction, and the peripheral portion is formed by linking the peripheral precast boxes 10 in the circumferential direction. The central portion 7 and the peripheral portion 8 are joined at circumferential contact surfaces, and the foundation structure is implanted in the seafloor in a state in which ballast has been loaded into only the central portion, with buoyancy being generated in the peripheral portion 8.