| 摘要 |
PROBLEM TO BE SOLVED: To provide a square steel pipe column with a column head part column-beam joining part core, excellent in workability when executing molten galvanization, capable of the excellent molten galvanization without staying zinc inside, and capable of securing bearing force required for the column-beam joining part core even if an opening part of a predetermined extent is provided in a reinforcement plate.SOLUTION: In the square steel pipe column 16 with the column head part column-beam joining part core, the column-beam joining part core 12 of a non-diaphragm form is provided in a column head part of a square steel pipe column 3, and the column-beam joining part core 12 is a structure for welding-joining the reinforcement plate 15 to an upper end surface of a core material 12a being a short length thick square steel pipe, and in the reinforcement plate 15, an opening part composed of a circular hole 15b is provided only in a transplanter in the vicinity of an inner peripheral corner part of the core material 12a, and the molten galvanization is applied by being immersed in a molten galvanization tank in a state of welding-joining an upper end surface of the square steel pipe column 3 to a lower end surface of the column-beam joining part core 12. |
