Title:
METHOD FOR ESTIMATING END BEARING CAPACITY OF ROTARY PRESS-IN PILE, END BEARING CAPACITY MANAGEMENT SYSTEM, CONSTRUCTION MANAGEMENT METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/186660
Kind Code:
A1
Abstract:
A method for estimating the end bearing capacity of a rotary press-in pile by estimating the end bearing capacity of a rotary press-in pile composed of a steel pipe pile, with a tip end of the pile being left open, at the time of construction for rotationally pressing the rotary press-in pile into the ground, said method for estimating the end bearing capacity of the rotary press-in pile comprising: a step for inputting a press-in pressure Qin measured at the time of construction and a bearing capacity estimation index H; and an estimation step for estimating, using the press-in pressure Qin and the bearing capacity estimation index H, an end bearing capacity Ru of the rotary press-in pile on the basis of an end bearing capacity estimation formula expressed by formula (1), which is formulated from the correlation of the press-in pressure Qin of the rotary press-in pile, the end bearing capacity Ru, and the bearing capacity estimation index H. A: Gradient when an approximate line of plotted points of a test result is expressed by formula (2), where the X axis represents the natural logarithm of the bearing capacity estimation index H, and the Y axis is Qin/Ru; and B: Y slice when an approximate line of plotted points of a test result is expressed by formula (2), where the X axis represents the natural logarithm of the bearing capacity estimation index H, and the Y axis is Qin/Ru.
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Inventors:
ISHIHAMA YOSHIROH (JP)
YANAGI YOSHITAKA (JP)
KUSAKA HIROKI (JP)
TANABE SHOUICHI (JP)
TODA KAZUHIDE (JP)
TAENAKA SHINJI (JP)
YANAGI YOSHITAKA (JP)
KUSAKA HIROKI (JP)
TANABE SHOUICHI (JP)
TODA KAZUHIDE (JP)
TAENAKA SHINJI (JP)
Application Number:
PCT/JP2018/012209
Publication Date:
October 03, 2019
Filing Date:
March 26, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
E02D5/56; E02D5/28; E02D7/22
Foreign References:
| JP2000080650A | 2000-03-21 | |||
| JP2000080649A | 2000-03-21 | |||
| JP2015017493A | 2015-01-29 | |||
| JP2002021076A | 2002-01-23 | |||
| JPH09279561A | 1997-10-28 | |||
| JPH06346443A | 1994-12-20 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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