REMOVING DEVICE FOR EXISTING ANCHOR MEMBER, REMOVING METHOD, AND REPAIR METHOD

摘要

PROBLEM TO BE SOLVED: To provide a removing device for an anchor member capable of improving work efficiency when replacing the anchor member and obtaining sufficient connection strength to a foundation of an anchor member to be constructed newly and to provide a removing method and a repair method. SOLUTION: High pressure injection water is jetted to a foundation part 1 around the anchor member 2 together with rotation of a nozzle head from a nozzle 31 formed in the nozzle head 13. Chipping action is efficiently given to the foundation part around the anchor member by high pressure jet water jetted from the nozzle 31. As a result, the existing anchor member 2 can be removed in a short time. In the repair method for the anchor member, a new anchor member is buried by utilizing a chipping hole. In this case, a face of the chipping hole is put into an adequately roughened condition by high pressure jet water to ensure construction strength of the anchor member to be replaced newly sufficiently. COPYRIGHT: (C)2005,JPO&NCIPI