| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel pipe column with diaphragms easily machined and easily maintained in quality with a short width to be thickened. SOLUTION: This steel pipe column 10 to which a beam 2 with flanges 2a, 2a on the upper and lower sides of a web 2b is jointed, has the diaphragms 11 projecting to the outer surface side and inner surface side at the upper and lower flange height of the beam, being formed by the plate thickness increase of local parts of a steel pipe by heating the local parts of the steel pipe to apply compressive force in the axial direction of the steel pipe.
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