| 摘要 |
PURPOSE:To reliably remove an anchor through introduction of a low stressing force, by a method wherein, after an anchor is inserted into an anchor hole to anchor it by means of a grout agent, shrinkage in the direction of cross section is exerted on a core to remove the core, and tensile materials are re moved. CONSTITUTION:A tensile material 2 is inserted into each guide groove 11 in the outer periphery of a shrink spacer 1 to bind the tensile materials by means of bands 3. An anchor is then inserted into an anchor hole, and mortar is pressed in the front of the hole by a mortar filling means to form an anchor part and exert a stressing force on the tensile materials 2. A material is shrunk by exerting a stressing force on the shrink spacer 1, a distance is produced between the tensile materials 2 and the spacer, and after the shrink spacer 1 is removed, a stress force is exerted on the tensile materials 2 for pull off. This, since the outer periphery of the tensile material of the anchor part is separated from mortar for anchoring, enables a pull off force, serving to peel the tensile material from the mortar for anchoring, to be sharply reduced to a low value. |
