In order arrangement of bar manner of opening reinforcing bar of the beam, additional strength manner null of the opening of the reinforced or steel framed reinforced concrete structure beam and the beam which possess

摘要

PROBLEM TO BE SOLVED: To provide a method of easily disposing reinforcements when an opening part is reinforced by the combination of ring reinforcements with U-shaped reinforcements. ;SOLUTION: In the reinforcement of the opening part 61 of a reinforced concrete or steel encased reinforced concrete beam 51, first a plurality of opening edge shear reinforcements 25 are disposed on both side of the opening part 61 orthogonal to main reinforcements 21 so as to surround the main reinforcements 21 and then, by using U-shaped reinforcements 11 having an entire shape formed in a generally channel shape, and the foot parts 15 thereof are inserted aslant to the inside of the opening edge shear reinforcements 25 from the upper and lower sides of a reinforcement assembly 41 so that upper and lower two U-shaped reinforcements 11 surround the opening 61 and the foot parts 15 of the upper and lower U-shaped reinforcements 11 are crossed each other on the right and left sides of the opening part 61. After that, two ring reinforcements 31 having the entire shape formed in a generally ring shape are disposed on the inside of the foot parts 15 of the U-shaped reinforcements 11 so as to surround the opening part 61 by the ring portion near both ends of the opening part 61.;COPYRIGHT: (C)2003,JPO