| 摘要 |
PURPOSE: An underground structure construction method without middle temporary pile which is structurally unnecessary is provided to improve construction efficiency without additional construction costs by minimizing road closure during construction. CONSTITUTION: An underground structure construction method without middle temporary pile which is structurally unnecessary is composed like next. Without the installation of an intermediate file, one-side end(A) is combined with a first side pile(100) installed at the outermost road and is expanded to the inner side. Without the installation of an intermediate file, the other side end(B) is supported in a temporary support structure(300) established in the excavation ground(C1) in which the lower part ground of the outermost road is out dug and. While the temporary supporting structure is removed, the underground structure is constructed by excavating the underground of the first and second side piles.
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