| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel plate structural member, configured to have a further high compression strength by designing an effective shape or layout of a reinforcement rib. SOLUTION: The steel plate structural member 1 is obtained by forming a steel plate having a fixed plate thickness t into a square pipe shape having a rectangular section, and has reinforcement ribs 15 formed on lateral side surfaces 13 and 14. The reinforcing rib 15 extends in the longitudinal direction of the side surface 13 while being obliquely folded up and down between an upper side end 13a and a lower side end 13b of the side surface 13 in a zigzag shape, and each of folded parts 16a and 16b disposed along the upper and lower side edges 13a and 13b of the side surface 13 has a semicircular shape. The reinforcement rib 15 has a planar shape determined so that, when the plate thickness of the steel plate forming the side surface 13 is t, the apexes 19a, 19b of each folded part 16a, 16b are within end areas 20a, 20b that are a strip-shaped area having a distance of from 5t to 15t from each of the upper and lower side ends 13a and 13b. COPYRIGHT: (C)2010,JPO&INPIT
|
