| 摘要 |
PROBLEM TO BE SOLVED: To provide a shear reinforcement with high workability, in which a fixation portion with a large sectional shape can be provided in an end portion of a screw-knotted irregular-shape steel bar easily, at low costs and stably, and fixation strength of the shear reinforcement and shear strength of a concrete skeleton can be improved.SOLUTION: A shear reinforcement 1 is inserted into a slot 12 formed from a reinforcing surface 11 of a concrete skeleton 10, and embedded with fillings 13 with which the slot 12 is filled. The shear reinforcement 1 comprises: a screw-knotted irregular-shape steel bar 2 with which smooth surfaces 22 extending over a full length are formed at both sides; nuts 3 which are threaded to end portions of the screw-knotted irregular-shape steel bar 2; and protrusions 42, 42 protruding from both sides of a substrate 41 substantially at right angle. The protrusions 42, 42 at both sides are inserted into screw holes 31 of the nuts 3, engaged and disposed along the smooth surfaces 22, 22 at both the sides of the screw-knotted irregular-shaped steel bar 2. |
