| 摘要 |
PURPOSE:To draw out a tension steel member by a method in which a breaking metal is penetrated through an aperture formed when pulling out a core material and then the cement mortar in the fixed portion of an anchor is broken by the breaking metal. CONSTITUTION:A core material 11 is pulled out of sleeves 13 and 14, and a chisel-like breaking metal 16 is driven into the aperture formed when the core material 11 is drawn out by applying an impaction to a rod 17. By this, cement mortar 4 in the anchor-fixed portion A is broken to separate a tension steel member 12 from the cement mortar 4. The tension steel member 12 thus separated is pulled out by jack or man power. |
