| 摘要 |
PROBLEM TO BE SOLVED: To provide a joining structure of a column and a beam capable of increasing reinforcing rigidity of a horizontal diaphragm and a beam flange of an H-steel beam in a joining section of a steel pipe column to improve an aseismatic performance and preventing the occurrence of brittle fracture. SOLUTION: An end face of a beam web 3 of the H-steel beam 2 is joined with a beam joining section of the steel pipe column 1, and an end face of the beam flange 4 is welded on the horizontal diaphragm 11 provided on an outer peripheral side face of the steel pipe column 1. A reinforcing rigid plate 7 is welded w between the beam flange 4 of the H-steel beam 2 and the horizontal diaphragm 11. The welded part of the reinforcing rigid plate 7 is provided in such a way that a shearing force in the direction of welding length along the direction of beam axis of the welded section of the horizontal diaphragm 11 and the beam flange 4 acts mainly for a tensile force from the H-steel beam 2.
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