| 摘要 |
PURPOSE: A method for constructing a vertical column for an underground structure is provided to vertically construct concrete columns by steel pipes for guide, and to reduce a construction period. CONSTITUTION: A method for constructing a vertical column for an underground structure comprises following steps. A guide steel pipe(14) is vertically installed in a place where a column is installed from the gallery pipe(12) at an upper gallery side at a predetermined depth by using a hydraulic jack. A column form(18) is installed inside the guide steel pipe after removing soil in the guide steep pipe. Concrete is placed into the column form and cured. A reinforcement connecting sleeve(24) for a haunch and a reinforcement connecting sleeve(28) for a slab are installed at the lower side of the guide steel pipe after excavating the circumference of the guide steel pipe. A main reinforcing bar for a haunch and a main reinforcing bar for a slab are respectively connected to the reinforcement connecting sleeve for the haunch and the reinforcement connecting sleeve for a slab, and a floor slab and haunch portion(2) are constructed in order. |
