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Title:
ROTATION BURIED PILE AND EXECUTION MANAGEMENT METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/1999/046449
Kind Code:
A1
Abstract:
A rotation buried end-opened pile capable of being easily penetration-driven due to a reduced apparent tip end resistance when a ground strength increases rapidly and providing a large final bearing capacity, comprising a pile body having an opened tip end and consisting of a steel pipe or a non-steel hollow pipe and one or a plurality of blades provided on the outer side face of the tip end of the pile body, wherein the tip ends of the blades may project downward beyond the tip end face of the pile body. An execution management method for a rotation pressed-in pile having one or a plurality of blades on the outer side face of the lower end thereof, characterized in that the continued penetration and/or the penetration completion of the rotation pressed-in pile are controlled, at the execution, according to a penetration resistance (Rp) at a bottom plate which is being determined from a balance between an input energy applied to a pile head and an energy consumption released at the bottom plate.

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Inventors:
SAEKI EIICHIRO (JP)
OOKI HITOSHI (JP)
TAKEDA TOMOKI (JP)
Application Number:
PCT/JP1999/001165
Publication Date:
September 16, 1999
Filing Date:
March 10, 1999
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
SAEKI EIICHIRO (JP)
OKI HITOSHI (JP)
TAKEDA TOMOKI (JP)
International Classes:
E02D5/56; E02D7/22; E02D11/00; (IPC1-7): E02D5/56; E02D7/00; E02D7/22
Foreign References:
JPH0711637A1995-01-13
JPS6286224A1987-04-20
JPS6439415A1989-02-09
JPH09324421A1997-12-16
JPH0226634U1990-02-21
JPH07331654A1995-12-19
JPH0354825U1991-05-27
JPS50143307U1975-11-26
JPH04179728A1992-06-26
JPH08226124A1996-09-03
JPH03194017A1991-08-23
JPS6361440U1988-04-23
JPH05163727A1993-06-29
JPH0194112A1989-04-12
JPS5634823A1981-04-07
JPH09144459A1997-06-03
JPS4939045B11974-10-23
Other References:
See also references of EP 1002902A4
Attorney, Agent or Firm:
Ishida, Takashi (Ishida & Associates Toranomon 37 Mori Building 5-1, Toranomon 3-chome Minato-ku Tokyo, JP)
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