AXIALLY YIELDING ELASTO-PLASTIC HYSTERESIS BRACE AND VIBRATION-DAMPING STEEL-FRAME STRUCTURE

摘要

The present invention relates to an axially yielding elasto-plastic hysteresis brace 10 which includes an H-section steel 11 as a steel core, a buckling-restraining member 13 which covers an outer periphery of the H-section steel 11, an unbounded layer which is filled between the steel core and the buckling-restraining member, and a square steel pipe 12 which covers the outer periphery of the buckling-restraining member 13 for reinforcement. For both ends of the H-section steel 11, one reinforcing plate 16 is welded to each outer surface of each flange 11 b so as to be overlapped therewith. The buckling-restraining member 13 is installed so that each reinforcing plate 16 is inserted to the buckling-restraining member 13 through an end thereof by a predetermined length L. And, where the width of the H-section steel as a steel core is given as B and the height thereof is given as H, an insertion length L of each reinforcing plate is set in a range of 2B=L=3B and also 2H=L=3H.