SOIL HARDENING OBJECT SITE FORMATION PILE, CONSTRUCTION METHOD OF PREFABRICATED PILE AND AUGER SCREW USED THEREFOR

摘要

PPROBLEM TO BE SOLVED: To provide a construction method of a prefabricated pile capable of being constructed without producing any surplus soil as an industrial waste, at the same time, getting a construction cost over at a lower price and obtaining a soil hardening object with stabilized quality. PSOLUTION: In the construction method of the prefabricated pile driving the prefabricated pile in the soil hardening object injecting a hardener into an excavated soil, a pile hole 6 is excavated by an auger screw 5 to move the excavated soil corresponding to an injection amount of the hardener and volume of the prefabricated pile to the ground surface, and then, the pile hole 6 by the preceding excavation is further excavated, the hardener 2 is injected into the excavated soil in the pile 6 to perform mixed agitation by repeatedly reciprocating while forward and reverse rotating the auger screw 5, and after the auger screw 5 has been pulled up, the prefabricated pile 4 is driven into the pile hole 6. PCOPYRIGHT: (C)2005,JPO&NCIPI