PROBLEM TO BE SOLVED: To provide an anchorage tool capable of exhibiting increased drawing resistance and bearing capacity when buried in the ground.SOLUTION: In an anchorage tool, a zigzag-shaped flexed protrusion part 5 that flexes in the vertical direction in a zigzag manner is projectingly provided on each of side surface parts 3, 3 facing each other on a base structure 2. A V-shaped flexed part 12 provided in the zigzag-shaped flexed protrusion part 5 has an inclined bottom surface part forming protrusion part 25 that forms an inclined bottom surface part 23 facing downward, and an inclined top surface part forming protrusion part 27 that forms an inclined top surface part 26 facing upward. A triangle concavity 13 having the side surface part 3 as a bottom surface part 32 is formed between the inclined top surface part 26 and the inclined bottom surface part 23.COPYRIGHT: (C)2015,JPO&INPIT【課題】土中に埋設された状態で引抜き抵抗力や支持力の増大を期し得る定着具を提供する。【解決手段】基体2の対向する側面部3,3の夫々に、上下方向にジグザグ状に屈曲するジグザグ状屈曲突部5を突設する。ジグザグ状屈曲突部5の有するV字状屈曲部12は、下向きの傾斜下面部23を形成する傾斜下面部形成突部25と、上向きの傾斜上面部26を形成する傾斜上面部形成突部27を有する。傾斜上面部26と傾斜下面部23との間に、前記側面部3を底面部32とする三角形状凹部13が形成されている。【選択図】図1