Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GROUND ESTIMATION METHOD AND GROUND ESTIMATION SYSTEM
To efficiently acquire ground information on a drilled point based on drilling data at the time of drilling with high accuracy.SOLUTION: A ground estimation method for estimating ground information on a drilled point based on rotational torque at the time of drilling estimates ground strength in the ground information using a previously acquired N value estimation formula. The N value estimation formula is calculated by: a drilling information acquisition step of drilling a reference point set in the vicinity of an investigation point where an actually measured N value is known for each actually measured depth, and acquiring the rotational torque; a soil determination step of giving an arbitrary soil determination value to soil for each depth of the reference point, and acquiring a soil determination result of the reference point; an analysis preparation step of performing speed correction to make speed in a depth direction constant on the rotational torque of the reference point, then calculating a representative value corresponding to the actually measured depth as rotational torque for analysis, and calculating a representative value corresponding to the actually measured depth from the soil determination result of the reference point as a soil determination value for analysis; and an estimation formula acquisition step of performing regression analysis using the actually measured N value as a target variable and the rotational torque for analysis and the soil determination value for analysis as explanatory variables.SELECTED DRAWING: Figure 1
【課題】削孔地点の地盤情報を、削孔時の削孔データに基づいて高い精度で効率よく取得することである。【解決手段】削孔地点の地盤情報を削孔時の回転トルクに基づいて推定する地盤推定方法であって、地盤情報のうちの地盤強度を、予め取得したＮ値推定式を利用して推定し、Ｎ値推定式は、実測深度ごとの実測Ｎ値が既知の調査地点近傍に設定した基準地点を削孔し、回転トルクを取得する削孔情報取得工程と、基準地点の深度ごとの土質に、任意の土質判定値を付与して基準地点の土質判定結果を取得する土質判定工程と、基準地点の回転トルクについて、深度方向の速度を一定にする速度補正を行ったのち実測深度に対応する代表値を、分析用回転トルクとして算定し、また、基準地点の土質判定結果から実測深度に対応する代表値を、分析用土質判定値として算定する分析準備工程と、実測Ｎ値を目的変数とし、分析用回転トルク及び分析用土質判定値を説明変数とする回帰分析を行う推定式取得工程と、により算定される。【選択図】図１
GROUND ESTIMATION METHOD AND GROUND ESTIMATION SYSTEM
To efficiently acquire ground information on a drilled point based on drilling data at the time of drilling with high accuracy.SOLUTION: A ground estimation method for estimating ground information on a drilled point based on rotational torque at the time of drilling estimates ground strength in the ground information using a previously acquired N value estimation formula. The N value estimation formula is calculated by: a drilling information acquisition step of drilling a reference point set in the vicinity of an investigation point where an actually measured N value is known for each actually measured depth, and acquiring the rotational torque; a soil determination step of giving an arbitrary soil determination value to soil for each depth of the reference point, and acquiring a soil determination result of the reference point; an analysis preparation step of performing speed correction to make speed in a depth direction constant on the rotational torque of the reference point, then calculating a representative value corresponding to the actually measured depth as rotational torque for analysis, and calculating a representative value corresponding to the actually measured depth from the soil determination result of the reference point as a soil determination value for analysis; and an estimation formula acquisition step of performing regression analysis using the actually measured N value as a target variable and the rotational torque for analysis and the soil determination value for analysis as explanatory variables.SELECTED DRAWING: Figure 1
【課題】削孔地点の地盤情報を、削孔時の削孔データに基づいて高い精度で効率よく取得することである。【解決手段】削孔地点の地盤情報を削孔時の回転トルクに基づいて推定する地盤推定方法であって、地盤情報のうちの地盤強度を、予め取得したＮ値推定式を利用して推定し、Ｎ値推定式は、実測深度ごとの実測Ｎ値が既知の調査地点近傍に設定した基準地点を削孔し、回転トルクを取得する削孔情報取得工程と、基準地点の深度ごとの土質に、任意の土質判定値を付与して基準地点の土質判定結果を取得する土質判定工程と、基準地点の回転トルクについて、深度方向の速度を一定にする速度補正を行ったのち実測深度に対応する代表値を、分析用回転トルクとして算定し、また、基準地点の土質判定結果から実測深度に対応する代表値を、分析用土質判定値として算定する分析準備工程と、実測Ｎ値を目的変数とし、分析用回転トルク及び分析用土質判定値を説明変数とする回帰分析を行う推定式取得工程と、により算定される。【選択図】図１
GROUND ESTIMATION METHOD AND GROUND ESTIMATION SYSTEM
地盤推定方法及び地盤推定システム
SASAKI TORU (Autor:in) / MIURA KUNIHARU (Autor:in) / INAGAWA YUSEN (Autor:in) / SHIGENO KEIKO (Autor:in)
09.03.2023
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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