POST-INSTALLED ANCHOR, POST-INSTALLED ANCHOR IMPLEMENTATION METHOD, POST-INSTALLED ANCHOR SYSTEM AND ROTATION-STOPPING TOOL

摘要

Provided is a post-installed anchor by which high drawing strength can be reliably maintained and an anchoring operation can be stably performed, or the like. A post-installed anchor 10, which is anchored into an anchor hole 100 having a diameter expansion portion 103, includes: an anchor main-body 11 inserted in the anchor hole 100; a plurality of straight-shaped guide opening portions 14 formed to penetrate in a radial direction at positions corresponding to the diameter expansion portion 103; a plurality of spread pieces 12 slidably provided at the respective guide opening portions 14 and engaged to the diameter expansion portion 103 in an anchoring state in which the plurality of spread pieces 12 spread in the radial direction; and a cone portion 13 that slides the respective spread pieces 12 to an outside in the radial direction to spread the plurality of spread pieces 12.