Post construction anchor, construction method of post construction anchor, post construction anchor system and rotation stop jig

摘要

A post-construction anchor or the like which can reliably maintain high withdrawing strength and can stably perform an anchoring operation is provided. An anchor body (10) which is a posterior construction anchor anchored to an anchor hole (100) having an enlarged diameter part (103) and which is inserted into an anchor hole (100), and an anchor body which penetrates in a radial direction at a position corresponding to the enlarged diameter part A plurality of spreading pieces 12 that are slidably provided in the respective guide opening portions 14 and are engaged with the enlarged diameter portions 103 in an anchoring state expanded in the radial direction, , And a cone portion 13 for sliding each spreading piece 12 outward in the radial direction so that the plurality of spreading pieces 12 expands.