VARIABLE CROSS-SECTION TOWER-LIKE STRUCTURE CONSTRUCTED BY PRECAST CONSTRUCTION METHOD

摘要

PPROBLEM TO BE SOLVED: To construct the whole of a variable cross-section tower-like structure such as a wind power generation tower, including a tubular body with a formed opening by using a precast construction method. PSOLUTION: In a lowermost block BSB0/SB, a precast tower-like body 16 with an opening, the opening 18 of which is formed at a downside with respect to a precast tubular body 17 of a boundary and which has a thickened portion 19 thickened to the side of an inner peripheral surface over a prescribed range in a circumferential direction with respect to the opening 18 is arranged; prestressing steel 14 which is extended from the side of a foundation 12 is anchored to an outer peripheral portion of the top surface of the precast tubular body 17; prestressing steel 14A corresponding to the thickened portion 19 among pieces of prestressing steel extended to the side of an upper-side precast tubular body 5 has an anchoring portion on the side of the foundation 12, and inserted through the thickened portion 19 so as to be extended to the side of the precast tubular body 5; and unbonded prestressing steel 28 which is arranged in a location except the thickened portion 19, anchored to an inner peripheral portion of an undersurface of the precast tubular body 17, and extended to the side of the precast tubular body 5. PCOPYRIGHT: (C)2009,JPO&INPIT