| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a joining structure of mutual columns and a building capable of suppressing the out-plane buckling.SOLUTION: In a joining structure of mutual columns, a first column 1 and a second column 2 are joined through a stress switching part 5. The stress switching part 5 includes: a lower part 2A of the second column 2; a main reinforcement part 70 placed on an outer peripheral side of the lower part 2A of the second column 2 and protruded and extending to a vertical direction continuously with a column main reinforcement 11; a steel pipe 50 surrounding all of the main reinforcement parts 70 and disposed over the entire length of the vertical direction; and an infilled concrete part 80 filled in the steel pipe 50. A plurality of ribs 60 for suppressing the out-plane buckling of the steel pipe 50 are formed in the steel pipe 50 in such a manner as to protrude from a peripheral surface of the steel pipe 50 at intervals in the vertical direction.</p> |
