Steel pipe pile with excavation jig and rotary press fit method of steel pipe pile

摘要

PROBLEM TO BE SOLVED: To provide a method to consecutively perform an installation of a mouth pipe and driving of a steel pipe pile.;SOLUTION: A rotary press-in method of a steel pipe pile comprises: a first process (P1) to engage a half-split excavation jig, which have a first and a second half cylindrical member each provided with spiral blade members, to the steel pipe pile attached to a pile driver; a second process (P2) to attach the steel pipe pile engaged with the half-split excavation jig to a mouth pipe; a third process (P3) to rotary press-in the mouth pipe in synchronization with rotation of the steel pipe pile engaged with the half-split excavation jig; a fourth process (P4) to excavate soil in the mouth pipe with the steel pipe pile engaged with a half-split excavation jig; a fifth process (P5) to rake out soil deposited between the spiral blade members after lifting up the steel pipe pile engaged with the half-split excavation jig; and a sixth process (P6) to rotary press-in the steel pipe pile in a place where the mouth pipe is pressed-in after the half-split excavation jig is removed from the steel pipe pile.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT