| 摘要 |
PROBLEM TO BE SOLVED: To provide a fall-off prevention device for a pipe material that grips both round and square pipe materials without deformation, prevents fall-off of the pipe material due to self-weight, and mitigates deterioration with aging.SOLUTION: A fitting part 11 disposed on both sides of a recessed part groove 2 of a bridge pier 1 has a bolt and nut 3 inserted into a through-hole 11a, and a fall-off prevention part 13 provided in a cutout part 12 parallel to a straight line connecting a center of the through-holes 11a on both sides of the fitting part 11 that have been formed between the fitting parts 11, for restraining movement of the cutout part in an orthogonal direction. A support metal fitting 10 comprising the fitting part 11, the cutout part 12 and the fall-off prevention part 13 is fitted on both sides of the recessed part groove 2 of the bridge pier 1 with the bolt and nut 3. A gripping fixture 20 that includes a metallic belt 21 and a tightening part 22 is tightened such that the metallic belt 21 grips the pipe material disposed in the recessed part groove 2 of the bridge pier 1 by the metallic belt 21, and the gripping fixture 20 reduces a distance between both edge parts of the metallic belt 21.SELECTED DRAWING: Figure 1 |
