| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the driving of pile members used for a tripod-stitching levee protection method. SOLUTION: In the tripod-stitching levee protection method, a tubular member 20 is driven in a slope 2 in the periphery of a crack 1 to form a driving hole 19 before the pile member 10 is driven in the slope 2, and the pile member 10 is driven to execute the tripod-stitching levee protection method. The tip 21 of the tubular member 20 is formed in such a way as to have a shape cut diagonally with respect to the direction intersecting its axial direction. Its rear end 22 has a structure in which a reinforcing member 23 for raising strength at the time of driving is joined to the rear end 22. COPYRIGHT: (C)2011,JPO&INPIT
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