| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for removing a PC steel stranded wire surely at a low cost and in a short time, and to provide a device for it. SOLUTION: The device comprises a high frequency induction coil 10 wound to have a cylindrical shape with a predetermined diameter for covering the outer periphery of one or a plurality of unbonded PC steel stranded wires 1 connected and fixed to a load-bearing body, a lead wire 11 connected to a coil terminal 10c of the high frequency induction coil, and a high frequency power supply device 12 generating a high frequency current of a predetermined frequency applied to the high frequency induction coil by the lead wire. When the unbonded PC steel stranded wires are removed from the ground after construction work, the lead wire 11 is connected to the high frequency power supply device 12, the high-frequency current is applied to the high frequency induction coil 10, the PC steel stranded wires are heated by the induction current generated in the unbonded PC steel stranded wires 1 positioned in the high-frequency induction coil, and the unbonded PC steel stranded wires 1 in a state of tension are cut. COPYRIGHT: (C)2008,JPO&INPIT
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