| 摘要 |
PROBLEM TO BE SOLVED: To provide a tip-closed pile exerted with a capability for using an excavated soil for stabilization of a hole wall without enlarging a cross section of a drilled hole while gaining an amount of the soil taken in by a discharging blade (spiral blade) projected to an outer periphery of the pile body. SOLUTION: A closing plate 2 is fixed on a tip end of a pile body 11 for closing the tip end. In the tip-closed pile wherein a plurality of excavating blades 3 are projected from the center of the closing plate 2 or from its vicinity toward its circumference, the end face of the tip end of the pile body 11 are divided in a plurality of sections along the circumferential direction. An inclination toward the upper end from the tip end of the pile body 11 is provided to the end face of each divided section from the front side to the rear side of the pile body 11 at the time of rotation of the pile body 11, and furthermore, the closing plates 2 are fixed on the plurality of the sections respectively. COPYRIGHT: (C)2009,JPO&INPIT
|
