일반상세로 배근된 강섬유 보강 철근콘크리트 연결보의 거동특성

초록

The purpose of this study is to evaluate the structural performance of reinforced concrete coupling beams and possibility of replacing the diagonal reinforcement of coupling beam according to steel fiber ratio. The real-scale test specimens were fabricated and reversed cyclic loading tests were performed. The main variable for the experiment was volume fraction ratio of steel fiber. As a results of the tests, it was confirmed that as the steel fiber reinforced, a large number of micro cracks occurred and the crack width decreased. Moreover, the angle of the diagonal tension crack is increased. The stiffness degradation is decreased due to dowel action of steel fiber and the energy dissipation also increased with the steel fiber reinforced