| 摘要 |
PURPOSE: A PS strand with a diameter enlarging unit is provided to prevent stress corrosion in a joint part, and to improve workability without using an additional spacer. CONSTITUTION: A PS strand(10) with a diameter enlarging unit comprises a core wire(11) and side wires(12). The core wire comprises multiple diameter enlarging parts(13,111). The amount of the diameter enlarging parts is determined in consideration of the length and sagging of the PS strand. The side wires are arranged in the core wire coupled to the diameter enlarging parts and are twisted. |
