| 摘要 |
PROBLEM TO BE SOLVED: To protect a sheet pile main body lower end part and a nozzle so as to efficiently build a sheet pile by arranging a water guiding tube on one side face of the sheet pile main body, installing a drilling body shaped in an inverted triangle in lateral cross section in the lower end, and housing a high pressure water jetting nozzle inside. SOLUTION: A concrete sheet pile A is formed by disposing a water guiding tube 2 comprising a water guiding tube main body 10, a cutting body 11, and a nozzle connecting body 12 on one side face of a reinforced concrete steel sheet pile main body 1 extended in the vertical direction and formed into a wavy shape in the bottom view. In the lower end of the sheet pile main body 1, a drilling body 3 provided with a high pressure water jetting port and shaped into an inverted triangle in the cross section is fitted and installed by means of a bolt, while a nozzle 4 is housed in a nozzle supporting and protecting piece so as to be connected to the nozzle connecting body 12. While jetting high-pressure water from the high-pressure water jetting port for excavating the ground, the sheet pile main body 1 is built in the ground. Because the lower end part of the sheet pile main body 1 and the nozzle 4 are protected by the drilling body 3 so as not to be broken, excavation can be carried out efficiently. In addition, the structure is simplified and a production cost is lowered.
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