지하층 외벽의 Double-skinned Composite Wall 공법 적용을 통한 시공 효율성 향상

The construction of a basement floor utilizes reinforced concrete (RC) structures composed mainly of rebar work and form work. RC structures lower construction efficiency and significantly delay the construction because they require a large number of temporary materials and wooden formwork. In this study, a Double-skinned composite wall (DSCW) System was developed to improve the efficiency of retaining wall construction. DSCW is a precast concrete (PC) wall in which two thin concrete panels are connected parallel to each other with truss-shaped reinforcement between them. DSCW can contribute to securing integrity, reducing the delay in construction. An overall process for the member design and construction stage of the DSCW system was proposed, and its improvement effects were examined regarding various aspects in comparison to the RC method.