EXISTING PILE SINKING METHOD AND SINKING DEVICE FOR OUTSIDE BORING METHOD OF CONSTRUCTION

摘要

PROBLEM TO BE SOLVED: To solve the problem wherein vibration is generated at the lower end of an existing pile and the inner wall surface of a previously formed vertical hole is broken in a current method of inserting an existing pile into the previously formed vertical hole by transmitting revolution and applying downward pressure to the upper end of the existing pile as an existing pile sinking method for an outside boring method of construction for boring a vertical hole and sinking the existing pile into the vertical hole in a foundation construction.;SOLUTION: Revolution is transmitted to the lower end of the existing pile to turn the existing pile around the shaft center thereof. The turning existing pile is pulled into the vertical hole by pulling the lower end of the existing pile downward.;COPYRIGHT: (C)2004,JPO