| 摘要 |
PROBLEM TO BE SOLVED: To provide a single pipe type structural member, which can be plastically deformed sufficiently without buckling even after yield by axial force, in which structure is simplified and which is manufactured easily. SOLUTION: A steel pipe 2 having a slenderness ratio of 30 or less is cut to the left and the right at a central site and forms end members 2A, 2A on both sides of the structural member 1, and joint devices 10 capable of connecting to steel structures are installed through end members 11 fixed and unified at the front ends of the end members. A steel pipe having the same outside diameter as the left-right end members 2A, 2A and compressive strength larger than the end members is connected between the end members in the longitudinal direction as an intermediate member 3A. Accordingly, the structural member can be equalized beforehand to a member substantially having the slenderness ratio of 30 or less to buckling though the actual slenderness ratio of the structural member is an intermediate value adopted normally. When the structural member is adopted as a compressive member, large plastic deformation is realized without generating buckling, energy by an earthquake is absorbed efficiently, and the excellent structural member as an earthquake-resisting material is obtained.
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