Anchor bolt for adhesive anchor, adhesive anchor, and method for constructing adhesive anchor
An anchor bolt for an adhesive anchor or the like that can be caused to exert substantial tensile strength at a relatively shallow embedding depth. An anchor bolt for an adhesive anchor that is fixed via adhesive to an anchor hole formed in a fixed body includes: a head part that is inserted into a hole back part of the anchor hole; a shank part that is continuous with the head part and formed to have a diameter smaller than the diameter of the head part; and a sleeve part into which the shank part is inserted, the sleeve part extending from an opening part to the hole back part of the anchor hole and having a tip end thereof abutted onto the head part.
1. An anchor bolt for an adhesive anchor that is fixed via adhesive to an anchor hole formed in a fixed body, the anchor bolt comprising:
a head part that is configured to be inserted into a hole back part of the anchor hole;
a shank part that is continuous with the head part and formed to have a diameter smaller than a diameter of the head part; and
a sleeve part into which the shank part is inserted, the sleeve part is configured to extend from an opening part to the hole back part of the anchor hole and having a tip end thereof abutted onto the head part, wherein
the head part and the shank part are integrally formed with each other as a one-piece unitary member,
the sleeve part is formed of steel or stainless steel,
an outer peripheral surface of the sleeve part is configured to be secured by the adhesive to contribute to tensile strength, and
the shank part includes:
an embedded part that is configured to be embedded in the anchor hole; and
a support screw part that is continuous with the embedded part, is configured to protrude to an outside of the anchor hole, and has a male screw on an outer peripheral surface.
2. The anchor bolt for an adhesive anchor according to claim 1 , wherein
the tip end of the sleeve part is anchored to the head part.
3. The anchor bolt for an adhesive anchor according to claim 1 , wherein
the outer peripheral surface of the sleeve part is formed into an irregularity shape.
4. The anchor bolt for an adhesive anchor according to claim 1 , wherein
the anchor hole has a straight hole part that extends from the opening part to the hole back part, and
the head part has a circulation part that causes the adhesive to relatively circulate from a tip end side to a base end side thereof during the insertion.
5. The anchor bolt for an adhesive anchor according to claim 1 , wherein
the anchor hole has a diameter expanded part at the hole back part into which the head part is configured to be inserted,
the diameter expanded part has a tapered hole part that expands toward a hole bottom side, and
the head part has a tapered surface part that is configured to face the tapered hole part.
6. An adhesive anchor comprising:
the anchor bolt for an adhesive anchor according to claim 1 ; and
the adhesive filled in a gap between the anchor hole and the anchor bolt.
7. A method for constructing the adhesive anchor according to claim 6 , the method comprising:
a boring and cleaning step of boring the anchor hole in the fixed body and cleaning an inside of the anchor hole;
an injection step of injecting the adhesive into the anchor hole;
an insertion step of inserting the anchor bolt into the anchor hole; and
a setting step of maintaining a position of the anchor bolt inside the anchor hole until the adhesive is cured.