| 摘要 |
PURPOSE: A top-down construction method of an underground structure using posts is provided to enable the efficient and cost-efficient top-down construction of an underground structure by reusing construction materials. CONSTITUTION: A top-down construction method of an underground structure using posts is as follows. Earth retaining walls(100) having H-piles(101) are installed along a boundary line of a building. A part of the top of the earth retaining walls is exposed to the outside. The surfaces of the H-piles inside the earth retaining walls are exposed to the outside by grinding one surface of each earth retaining walls, and lower brackets(111) are installed on the exposed surfaces of the H-piles. Backing beams(112) are horizontally installed on the adjacent lower brackets. Support girders(110) are installed between the earth retaining walls using the backing beams and the lower brackets. Posts(200) are installed on the tops of the lower brackets, and tubular horizontal members(240) are horizontally installed o the posts. |
