| 摘要 |
PROBLEM TO BE SOLVED: To provide a beam opening reinforcement structure, in which weld work can be simply and easily carried out, and construction cost can be restricted. SOLUTION: To a circular main body 4 having the same form and the same diameter of an inner circumference with an opening 2 of a beam 1, a beam reinforcement ring 3 comprising cast steel for a weld structure in which a through groove 5 for welding is continuously formed along the circumference, except for a non-groove part 6, is abutted on one surface side or both surface sides of the beam 1 in such a way that an inner circumferential edge 4a of the circular main body 4 is corresponded to an inner circumferential edge 2a of the opening 2. The beam reinforcement ring 3 is fixedly welded with the beam 1 from the through groove 5. COPYRIGHT: (C)2006,JPO&NCIPI
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