RING-SHAPED BEAM REINFORCEMENT METAL FITTING AND BEAM REINFORCEMENT STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a beam reinforcement member etc. capable of achieving weight saving while securing required reinforcement strength.SOLUTION: A ring-shaped beam reinforcement metal fitting 1 is a ring-shaped member. The ring-shaped beam reinforcement metal fitting 1 includes a piping hole 2 that is to be penetrated by piping etc. A flange part 3 is provided on one side of the ring-shaped beam reinforcement metal fitting 1. The flange part 3 has an outer diameter larger than that of a through hole provided on a beam. On the other side of the ring-shaped beam reinforcement metal fitting 1 is provided a cylindrical insertion part 5 whose outer diameter is smaller than that of the flange part 3. A thin part 7 having the smallest thickness is formed on the ring-shaped beam reinforcement metal fitting 1. The thin part 7 is formed on a straight line along a center line of the ring-shaped beam reinforcement metal fitting 1. The flange part 3's thickness is larger at its part whose distance from the thin part 7 is larger. Or the ring-shaped beam reinforcement metal fitting 1's thickness increases gradually from the thin part 7 in respective directions orthogonal to the center line along which the thin part 7 is formed.SELECTED DRAWING: Figure 1