| 摘要 |
PURPOSE: An anchor bolt is provided to directly fix the bolt inside a hole without using an extra cap covering an outer peripheral surface of the bolt, prevent the bolt from shaking inside the hole, and easily manage parts by integratedly forming a nut and a washer. CONSTITUTION: A bolt(1) is fixed inside a hole formed at a concrete for supporting a structure. An expanding member(4) is forcibly inserted into a center part of the bolt for expanding cut parts(9) of the bolt. A washer(6) and a nut(7) are inserted into the bolt for fixing the structure. The bolt has a male screw part(8) formed at an upper part, being exposed to the outside of the hole, the cut parts formed at a lower part, and a plurality of protrusions(10) fixing the bolt inside the hole.
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