| 摘要 |
PROBLEM TO BE SOLVED: To provide a joining structure of mutual columns and a building, capable of restraining outer surface buckling.SOLUTION: A joining structure of mutual columns comprises: a main reinforcement part 70 for joining a first column 1 and a second column 2 via a stress switching part 5, arranging the stress switching part 5 on a lower part 2A of the second column 2 and the outer peripheral side of the lower part 2A of the second column 2 and extending by projecting in the vertical direction from a concrete part 13 by continuing with a column main reinforcement 11; a first steel pipe 50 for wholly surrounding the main reinforcement part 70 and arranged over the total length in the vertical direction; a spiral hoop reinforcement 60 arranged on the inner peripheral side of the first steel pipe 50 and the outer peripheral side of the second column 2 and extending in a spiral shape toward the vertical direction; and a filled concrete part 80 filled between an inner peripheral surface of the first steel pipe 50 and an outer peripheral surface of the second column 2. |
