A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT DEVICE
To propose a ground improvement method and a ground improvement device to be used therefor that make uniform the expression strength of an improved body as well as mixing and stirring without excess or deficiency.SOLUTION: A mixing state of the stabilized soil is measured at a predetermined sampling cycle by a plurality of conductivity sensors attached to a mixing stirring head (step S1). Measurement results are statistically processed to obtain a coefficient of variation as statistical variation in the depth direction of the mixing and stirring state of the stabilized soil (steps S2 to S4). The coefficient of variation thus determined is compared with a preset target value to determine whether the mixing and stirring state of the stabilized soil is appropriate (step S5). If the determination result is NO, the appropriate digging speed of the mixing and stirring head capable of achieving the target value and the solidified material discharge amount adapted to the digging speed are determined, and the construction is performed under the conditions (Steps S7 and S8).SELECTED DRAWING: Figure 7
【課題】過不足の無い混合撹拌とともに、改良体の発現強度を均一とする地盤改良方法とそれに用いる地盤改良装置を提案する。【解決手段】混合撹拌ヘッドに取り付けた複数の導電率センサにより安定処理土の混合状態を所定のサンプリング周期で計測する（ステップＳ１）。計測結果を統計処理して安定処理土の混合撹拌状態の深度方向での統計的ばらつきとして変動係数を求める（ステップＳ２〜Ｓ４）。求めた変動係数と予め設定した目標値とを比較して、安定処理土の混合撹拌状態の適否判定を行う（ステップＳ５）。判定結果がＮＯである場合に、目標値を達成可能な混合撹拌ヘッドの適切な掘進速度とその掘進速度に適応する固化材吐出量を求めて、その条件のもとで施工を行う（ステップＳ７，Ｓ８）。【選択図】図７
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT DEVICE
To propose a ground improvement method and a ground improvement device to be used therefor that make uniform the expression strength of an improved body as well as mixing and stirring without excess or deficiency.SOLUTION: A mixing state of the stabilized soil is measured at a predetermined sampling cycle by a plurality of conductivity sensors attached to a mixing stirring head (step S1). Measurement results are statistically processed to obtain a coefficient of variation as statistical variation in the depth direction of the mixing and stirring state of the stabilized soil (steps S2 to S4). The coefficient of variation thus determined is compared with a preset target value to determine whether the mixing and stirring state of the stabilized soil is appropriate (step S5). If the determination result is NO, the appropriate digging speed of the mixing and stirring head capable of achieving the target value and the solidified material discharge amount adapted to the digging speed are determined, and the construction is performed under the conditions (Steps S7 and S8).SELECTED DRAWING: Figure 7
【課題】過不足の無い混合撹拌とともに、改良体の発現強度を均一とする地盤改良方法とそれに用いる地盤改良装置を提案する。【解決手段】混合撹拌ヘッドに取り付けた複数の導電率センサにより安定処理土の混合状態を所定のサンプリング周期で計測する（ステップＳ１）。計測結果を統計処理して安定処理土の混合撹拌状態の深度方向での統計的ばらつきとして変動係数を求める（ステップＳ２〜Ｓ４）。求めた変動係数と予め設定した目標値とを比較して、安定処理土の混合撹拌状態の適否判定を行う（ステップＳ５）。判定結果がＮＯである場合に、目標値を達成可能な混合撹拌ヘッドの適切な掘進速度とその掘進速度に適応する固化材吐出量を求めて、その条件のもとで施工を行う（ステップＳ７，Ｓ８）。【選択図】図７
GROUND IMPROVEMENT METHOD AND GROUND IMPROVEMENT DEVICE
地盤改良方法および地盤改良装置
MOCHIZUKI KATSUKI (author) / MORITA KOJI (author) / HAMAI KUNIHIKO (author) / MAKINO MASAKI (author) / ITO HIROKUNI (author) / MAKINO TAKAYA (author)
2019-06-27
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND IMPROVEMENT DEVICE, GROUND IMPROVEMENT SYSTEM, AND GROUND IMPROVEMENT METHOD
| European Patent Office | 2019
GROUND IMPROVEMENT DEVICE, GROUND IMPROVEMENT SYSTEM, AND GROUND IMPROVEMENT METHOD
| European Patent Office | 2020