Method of constructing a deep pile and a deep pile

摘要

PROBLEM TO BE SOLVED: To provide a construction method of a caisson type pile and the caisson type pile capable of easily and surely constructing a hollow part forming inner form of the caisson type pile of a large diameter.SOLUTION: In a caisson type pile having a ring-shaped outer form constituted in the natural ground of a pile construction site and forming a shaft, a ring-shaped inner form 2 constructed in the outer form, concrete placed between the outer form and the inner form 2 and surplus soil back-filled in a hollow part formed of the inner form 2, the inner form 2 is constituted by connecting an inner form unit (U) of assembling a liner plate 6 in a ring shape in a vertical multistage by connection means 11 constituted of an inside guide member 12 and outside connection means 13 installed in left-right end part side flanges 8 of the liner plate 6.SELECTED DRAWING: Figure 1