Double bar arrangement of reinforced concrete foundation beams

摘要

PROBLEM TO BE SOLVED: To enhance ductility capacity in the reinforced concrete base beam of a double reinforcing bar arrangement structure where the upper end of a pair of right and left beam reinforcement frames has, for example, a structure connected by a connecting reinforcement at a fixed pitch, and thereby brittle fracture can be avoided.SOLUTION: A connecting reinforcement frame 6A(6B) is used which includes horizontal connection reinforcements 11, and vertical connection reinforcements 12 extending in the direction intersecting the horizontal connection reinforcements 11 and welded to the horizontal connection reinforcements 11, as a connecting reinforcement for use in a double reinforcing bar arrangement structure of a reinforced concrete base beam. The connecting reinforcement frames 6A(6B) are installed, and thereby the occurrence and progress of upper surface splitting cracks after the flexural yielding of the reinforced concrete base beam can be prevented, and the ductility capacity of the base beam can be enhanced.SELECTED DRAWING: Figure 2