| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel plate deck that does not use welding, while reducing weight of the steel plate deck with a longitudinal rib.SOLUTION: A large number of square steel tubes 4, which each has a rectangular cross-section and the four-side side surfaces of which have the same wall thickness, are arranged between two upper and lower steel plates 5 and 9 in a state in which the opposed side surfaces thereof are brought into contact with each other. Upper and lower side surfaces of the square steel tube 4 are each covered with the upper and lower steel plates 5 and 9, and fixed by a bolt 6. The steel plates 5 and 9 assume rectangular shapes large enough to cover all ranges of the upper and lower side surfaces of the square steel tube 4. |
