| 摘要 |
PROBLEM TO BE SOLVED: To provide a subgrade raising method that enables a subgrade to be raised without securing a space for temporary structure.SOLUTION: A subgrade raising method includes the steps for: installing a track skeleton support plate 10 underneath a track skeleton 1 laid on a subgrade 2; embedding a pile material 20 underground in a vertical direction through a through-hole 11a formed in the track skeleton support plate 10; connecting a raising pile material 30 in a vertical direction at a top end of the pile material 20 embedded underground, the raising pile material reaching a desired raising height; pulling the track skeleton support plate 10 upward along the raising pile material 30; and fixing the track skeleton support plate 10 on a top end of the raising pile material 30. The subgrade 2 that supports the track skeleton 1 is raised by the subgrade raising method, thereby constructing a railway track 100.SELECTED DRAWING: Figure 1 |
