| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily and inexpensively manufacturable steel pipe pile for floatation prevention for effectively preventing the floatation of a buried structure buried in the ground such as a manhole.SOLUTION: A steel pipe pile 1 for floatation prevention is configured such that a foundation pipe P1, a water pipe P2 and an upper pipe P3 are connected so as to be integrally imposed. Then, an external spiral blade 3 is fixed to the top end of the foundation pipe P1, and a plurality of water holes 12, 12 and so on for allowing the inflow of gap water in the ground are drilled like scattered points in the outer periphery of a pipe body 13 of the water pipe P2. Also, a drain hose 14 for removing the gap water from the water holes 12, 12, and so on, and for discharging the gap water to the surface is housed in the pipe body 13 of the water pipe P2. |
