Title:
回転圧入杭の先端支持力推定方法、先端支持力管理システム、施工管理方法、及びプログラム
Document Type and Number:
Japanese Patent JP6856171
Kind Code:
B2
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.
Inventors:
Yoshiro Ishihama
Yoshitaka Yanagi
Yuki Kusaka
Shoichi Tanabe
Kazuhide Toda
Shinji Myo Naka
Yoshitaka Yanagi
Yuki Kusaka
Shoichi Tanabe
Kazuhide Toda
Shinji Myo Naka
Application Number:
JP2020510206A
Publication Date:
April 07, 2021
Filing Date:
March 26, 2018
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
E02D5/56; E02D5/28; E02D7/22
Domestic Patent References:
| JP200080650A | ||||
| JP200080649A | ||||
| JP201517493A | ||||
| JP200221076A | ||||
| JP9279561A | ||||
| JP6346443A | ||||
| JP20172623A |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi