| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an anchor which firmly fixes an additional member such as a steel bracket to an existing concrete member by less number of the anchors. <P>SOLUTION: A steel pipe 11 is inserted into a hole 3b cut to a predetermined depth in an existing concrete member 3 from a surface 3a of the concrete member and is fixed by filling a space between an inner peripheral surface of the hole 3b and the steel pipe 11 with a filler 16. A small diameter hole 3c, of which inner diameter is smaller than the hole, is provided to a position much deeper than a bottom of the hole and an anchor bolt 12 is inserted thereinto to fix tightly. A nut 14 is screwed with a male screw part formed at a rear end of the anchor bolt so as to restrain to prevent the steel pipe from coming off from the concrete member via a bearing plate 13. The inside of the steel pipe is filled with a filler 18 to be cured. A male screw is formed on an outer peripheral surface of the steel pipe. A second nut 15 is screwed with the male screw, and a contact plate 2a of a steel bracket, which is an additional member, is sandwiched between the seconde nut and the concrete member to fix. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
