강섬유의 혼입이 고강도 콘크리트 충전 각형강관기둥에 미치는 영향에 관한 실험적 연구

Abstract

Concrete filled steel tube system is the composite structure that has advantages of concrete and steel, so that it have been utilized widely and there are many studies on that for good performance through interaction between steel and concrete. Recently it has investigated high strength steel tube column for upgrading the capacity. But there is a problem for decreasing ductility compared with normal strength concrete filled steel tube, because the high strength concrete has a brittle failure mode. This paper investigated the behaviour of high strength concrete filled steel tube with parameters of the presence of steel fiber and the type of steel under axial load for the effect of reinforcing steel fiber on high strength concrete filled steel tube column.