| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel plate weld joint and a welded structure having excellent brittle crack propagation resistance capable of suppressing propagation of any brittle crack in the weld joint or a base metal, and preventing any breakage of the welded structure even when the brittle crack is caused in the weld joint. SOLUTION: The steel plate weld joint is formed by butt-welding steel plates having the brittle crack propagation stop characteristic Kca of≥4,000 N/mm<SP>1.5</SP>of at least a part of a base metal to each other. A control part 3 in the brittle crack propagation direction provided with an inclined bead 31 extending from the top of a weld line L of the steel plate weld joint 1 and inclined at the angle between≥10°and≤60°with respect to the longitudinal direction of the steel plate weld joint 1 is provided to at least a part of the steel plate weld joint 1. COPYRIGHT: (C)2010,JPO&INPIT |
