Title:
施工データからの地盤データの推定方法
Document Type and Number:
Japanese Patent JP7393452
Kind Code:
B2
Abstract:
To provide an estimation method of ground data from construction data estimating ground data of an N value and a percentage content of a fine-grain fraction at an exact point from construction data on construction through a sand pile construction method using static compaction as a liquefaction countermeasure and allowing liquefaction strength of the ground to be easily and securely calculated using the estimated N value and percentage content of a fine-grain fraction.SOLUTION: An estimation method of ground data from construction data includes steps of: determining a relation between a correction cone penetration resistance (qt) and a peripheral surface friction resistance (fs) acquired through a cone penetration test from the construction data on at least an auger current value A, a hydraulic pressure P of a penetration device, and a penetration speed S obtained during construction; estimating the correction cone penetration resistance (qt) and the peripheral surface friction resistance (fs) from the construction data at a place where the relation is used; and estimating an N value and a percentage content of a fine-grain fraction (Fc) of a target ground through an estimated equation of the N value and the percentage content of the fine-grain fraction used for the cone penetration test.SELECTED DRAWING: Figure 2
Inventors:
Kenji Harada
Yuji Yamashita
Yuji Yamashita
Application Number:
JP2022022185A
Publication Date:
December 06, 2023
Filing Date:
February 16, 2022
Export Citation:
Assignee:
Fudo Tetra Co., Ltd.
International Classes:
E02D1/02; E02D3/10
Domestic Patent References:
| JP2019157346A | ||||
| JP2020100949A | ||||
| JP6029528B2 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Masakazu Ito
Masakazu Ito