Y字筋を用いた梁端ヒンジリロケーションRC造梁に関する実験的研究

摘要

カツトオフ筋方式およびY字筋方式によりヒンジ計画位置を梁端部から離した梁端ヒンジリロケーション RC造梁の試験体を対象として多数回繰返し載荷試験を実施した。本実験の範囲内であるが，以下の知見を得た。%In a reinforced concrete beam member, there is a collapse mechanism which generates a yield hinge during an earthquake at a position separated from the beam-ends on the sides of a column to absorb the energy.This is an experimental study concerning high-strength reinforced concrete beam where a yield hinge was planned in a position separated from the beam-ends on the sides of a column, by adding a Y-shaped reinforcing bar. In the experiments, we conducted cyclic loading tests several times. As a result, it was verified that by the effect of the Y-shaped reinforcing bars, it is possible to alleviate the plasticization of the beam reinforcing bars and the progress of the cracks at the hinge position as compared with the conventional method.