| 摘要 |
PROBLEM TO BE SOLVED: To curtail a construction period and reduce a cost when inserting a shear reinforcement and other rod members facing upward into an upward-facing hole drilled through an existing reinforced concrete structure by eliminating a need to install a conventional fall-off prevention jig, by preventing fall-off of the rod members.SOLUTION: When inserting a rod member 1 facing upward into a drilled hole H opened upward on a reinforced concrete structure, a plurality of needle members 3 extending from a tip side to a rear edge side of the rod member is formed on a periphery of the rod member 1, and the rod member 1 is inserted into the drilled hole H facing upward, to have the needle members 3 on the periphery of the rod member 1 bite into a surface of the drilled hole H. Specifically, the needle member 3 is provided on the periphery at the tip part and the rear edge part of the rod member 1. Also, three or more needle members 3 are provided on a mounting fixture 4 for mounting on the rod member 1.SELECTED DRAWING: Figure 3 |
