METHOD OF DRIVING STEEL PIPE PILE, STEEL PIPE PILE FOUNDATION, AND STEEL PIPE PILE

Japanese Patent JP2011157780

A

To provide a method of driving a steel pipe pile capable of increasing working efficiency by adjusting the plugging phenomenon of in-pipe soil due to rotary press-fitting to suppress an increase in press-fit resistance, and also provide a steel pipe pile foundation and a steel pipe pile.

In a first rotary press-fitting step, a steel pipe pile 2 is rotated and press-fitted while the vertical downward displacement and the rotating displacement amount of the steel pipe pile 2 are adjusted so that the inclination angle θ1 of ribs 4 is smaller than the press-fit rotating angle θ2 thereof so as to provide an upward stress T to the in-pipe soil S for reducing the frictional force F between the soil and the inner peripheral surface 3 of the steel pipe. Consequently, the plugging of the in-pipe soil S can be suppressed to suppress an increase in press-fitting resistance for increasing a working efficiency.

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MYONAKA SHINJI
ISHIHAMA YOSHIRO
TAKAGI MASATAKA

JP2010021995A

August 18, 2011

February 03, 2010

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NIPPON STEEL CORP

E02D5/56; E02D5/28; E02D7/22

JPS612543U	1986-01-09
JPH09302650A	1997-11-25
JP2005299192A	2005-10-27
JPS612543U	1986-01-09
JPH09302650A	1997-11-25

Intellectual Property Office

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