| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an anchor bolt capable of accurately performing the work of fixing a brace metal fitting and a hold-down metal fitting to a column and a brace disposed after placing continuous footing concrete in a short time. <P>SOLUTION: The anchor bolt 10A has an anchor bolt body 11 for which two bar members 12 made of reinforcing bars arranged in parallel with each other and an iron long nut member 13 held on one end side are fixed by welding. Before placing concrete, an intermediate member 16 is coaxially attached to the upper end of the anchor bolt body 11 in an inverse truncated conical shape, and a center shaft member 18 is screwed through a shaft hole 16a of the intermediate member 16 to a shaft hole 13a of the long nut member 13 at a screw groove 18a at the distal end further. Between a nut 19 fixed to the screw groove 18a and the long nut member 13, the intermediate member 16 is clamped and fixed. After placing the concrete, the center shaft member 18 and the intermediate member 16 are detached and both screw bolt members are screwed to the shaft hole 13a of the long nut member 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
