Tower-integrated offshore wind power floating body and method for manufacturing same

A tower-integrated offshore wind power floating body (100) comprising:

• a tower (3) formed under a power generation unit (2);
• a plurality of transition pieces (TPs) (4) formed to be spaced apart from a lower circumference of the tower (3) at regular intervals;
• a seating part (5) formed under the tower (3) and the TP (4) to support lower portions of the tower (3) and the TP (4);
• a reinforcement column (7) having the same axis as a vertical central axis of the tower (3) and formed under the seating part (5);
• a buoyancy part (9) formed under the reinforcement column (7);
• a ballast part (11) formed under the buoyancy part (9) such that the ballast part (11) is spaced a certain length from the buoyancy part (9);
• a brace (8) formed between the seating part (5) and the buoyancy part (9);
• a brace (10) formed between the buoyancy part (9) and the ballast part (11);
• and
• several main columns (6) arranged in a vertical direction in the TP (4), the seating part (5), the buoyancy part (9), and the ballast part (11), and the main columns (6), wherein the main columns (6) are formed to pass through side surfaces of the seating part (5) and the buoyancy part (9) and formed to be seated under a side surface of the TP (4).