| 摘要 |
PURPOSE: A method of building the underground structure by using reinforcing concrete beams of permanent structure as props for sheeting is provided to effectively use the reinforcing concrete beams as temporary supporters and to develop the system form which makes the construction of beam easy and fast. CONSTITUTION: A method of building the underground structure by using reinforcing concrete beams of permanent structure as props for sheeting comprises the steps of: driving some center piles(3) into the place where columns are built; building an inner retaining wall(22) at the place where a structure is built; installing the first floor's concrete beam (4) which is used to make an inner retaining wall(22) and the upper part of a center pile(3) integrated each other; excavating at the first step; attaching reinforcing concrete beam to an inner retaining wall(22) and a center pile(3); excavating at the second step; repeating the above step and excavating upto the lowest floor; building a foundation; pouring concrete to the lowest floor and continuing the work upward.
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