| 摘要 |
PROBLEM TO BE SOLVED: To provide a U-rib steel floor slab which is constituted by welding a U-rib to an undersurface of a deck plate, and which can accurately prevent the appearance of a deck penetrating crack penetrating the deck plate. SOLUTION: A groove 13 with predetermined dimensions is preprovided on the side of the inner surface of the leading end of the U-rib 12a. The U-rib steel floor slab is manufactured by welding the U-rib 12a to the deck plate 11a from the outside of a closed-cross-section space which is formed of the deck plate 11a and the U-rib 12a. COPYRIGHT: (C)2008,JPO&INPIT
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