| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint bar structure capable of using a short joint bar and comprising a joint having high rigidity and strength. SOLUTION: A joint bar unit 3 which comprises an I type joint part of welding reinforcement frame units 1 and 2 comprising an I type joint structure comprises upper and lower joint bars 31 and 32, and four stirrups 33 which are subjected to a spot welding thereto. The each stirrup 33 is mounted on the same side, and the joint bars 31 and 32 are set at such an interval as to be stored between subjecting beam main bars 11 and 12, and 21 and 22. A welding strength of the stirrup is more than a standard yielding point strength of a reinforced base material. The joint bar unit 3 is mounted on the joint part from a side face, and the joint bars 31 and 32 are bound to stirrups 13 and 23 on a beam side with a binding wire. The joint bar unit 3 having high rigidity is used, thereby the joint part having high rigidity and strength can be constituted, as a result, the length of the joint bar can be shorter compared with a conventional overlapping case.
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