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프리캐스트 계단을 적용한 효율적인 RC 코어의 연속화 시공방법
김욱종,김록배,이도범 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The past manpower-dependent method in the constructional industry has raised the problem of high cos - low efficiency. Especially construction of staircase by using conventional form work and concrete placement deteriorates the quality of reinforced concrete, requires many manpower and has many difficulties of work. This study introduces COSEC system(RC _Co_re _Se_quential _C_onstruction Method by Using PC stairs) to reduce the manpower and the construction time and improve quality of structure. This is the new epoch method of installing PC stair elements after the construction of core wall contrary to the existing method of installing PC stair elements before the construction of core wall or at the same time. After reinforced concrete core wall is constructed by the system form in advance, PC landings and stairs are took in and set up between core walls standing right opposite. PC landings are connected by pinned connection with the core wall and PC stairs are simply put on PC landings on both sides. This system makes installation of PC stair elements very easy and improves the quality of stairs and core wall. This study shows the effect of practical application to construction of the building in the field.