To provide a construction method for a knotted cast-in-place concrete-based pile, capable of constructing a concrete-based pile having a stable quality for ground reinforcement without being affected by the state of earth at a site, with the constructed concrete-based pile having a large pile peripheral surface resistance.
A construction method for a knotted cast-in-place concrete-based pile includes the steps of: preparing a steel pipe 10 fitted with an excavating blade 12, the tip excavating blade 12 being detachably fitted at the lower end of the steel pile; inserting the steel pipe 10 fitted with the excavating blade 12 into a ground 15 while excavating earth downward with the tip excavating blade 12 and forming a spiral groove in earth on the outer peripheral surface of a steel pipe 11 by rotating the steel pipe 10 fitted with the excavating blade 12 around the central axis of the steel pipe 11 and pushing down in a specified direction; filling the inside of the steel pile 11 with mortar or ready mixed concrete; and pulling out only the steel pipe 11 from the ground 15 and pouring the mortar or ready mixed concrete in the steel pipe 11 into a pile hole 17, which is a pull-out trace of the steel pipe 11, and the spiral groove 16. The tip excavating blade 12 may be storable in the steel pipe 11 instead of being detachable.
SUGA MASANORI
TAKAHASHI SHUICHI
JPH0420613A | 1992-01-24 | |||
JP2006057404A | 2006-03-02 | |||
JPS6383316A | 1988-04-14 | |||
JP2001193376A | 2001-07-17 | |||
JPS6347416A | 1988-02-29 | |||
JPH07189249A | 1995-07-28 | |||
JP2000141358A | 2000-05-23 |
Shuji Sugimoto
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