| 摘要 |
PROBLEM TO BE SOLVED: To provide a structural member sharply improving the allowable load against tensile force and reducing the shape and weight. SOLUTION: Concrete 50 is placed into a long tubular constraining body 11, prestress is introduced in the axial direction of the placed concrete 50, and a PC member 1 is formed with the PC applied with three-axis constraint, or multiple arc-shaped concrete segment blocks are combined into a ring shape, a load is applied in the inner peripheral direction from the outer periphery of the ring, prestress is introduced in the axial direction of the ring, and the PC member is formed with the PC applied with multi-axis constraint. |
