| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-strength holddown metallic material capable of realizing an improvement in the allowable strength in a short time of the metallic material and the ensuring of workability in an anchor bolt having a large shaft diameter at a low cost. SOLUTION: The holddown metallic material 17 is composed of a pipe metallic material 18 as a bolt-inserting pedestal and a vertical-frame mounting member 19, on which the pipe metallic material 18 is fixed. The anchor bolt 23 is inserted into the pipe metallic material 18, and a nut 24 is clamped on a flat washer 26 arranged at the upper end of the pipe metallic material 18. The vertical-frame mounting member 19 has a joining rib section 25 for welding a reinforcing rib 21 arranged while surrounding the outside of the pipe metallic material 18 so as to permit the clamping operation of the nut and the movement of the flat washer 26 and the pipe metallic material 18 when the anchor bolt 23 is moved relatively in the pipe metallic material 18 and the nut is clamped, and the joining section is extended vertically and welded. The vertical-frame mounting member 19 is installed so as to be housed in a groove section for a vertical frame 1. COPYRIGHT: (C)2004,JPO
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