COLUMN BEAM JOINT CONSTRUCTION

PROBLEM TO BE SOLVED: To enhance aseismic safety and economy in a column beam joint construction mainly applied to a building with steel framing. SOLUTION: Two diaphragms 4 are attached to a steel pipe 3 and a column 2 is constituted, and two H-shaped steel beams 6 are welded to the column 2. At both the right and left sides of the flange 6b of each H-shaped steel beam 6, triangular plate-shaped hunch plates 7 made of a very low yield point steel material are horizontally spliced and welded to the column 2. In this way, the joint portion between the column 2 and the H-shaped steel beam 6 is stiffened by the hunch plates 7, and the deformation follow-up performance of the H-shaped steel beam 6 to the column 2 during earthquake can be improved. Thus, the hysteresis energy of during earthquake is absorbed by the H-shaped steel beam 6 and hunch plates 7, and therefore there is no possibility of a rupture of the flange 6b of the Hshaped steel beam 6 due to small or medium earthquakes. Also, this column beam joint construction 1 can be completed only by splicing the hunch plates 7 to the H-shaped steel beam 6 and thus time and cost required for building the column beam joint construction 1 having the excellent yield strength of the beam can be reduced.