A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
OUTER EDGE CHECKING APPARATUS FOR GROUND IMPROVEMENT BODY
PROBLEM TO BE SOLVED: To determine whether the outer edge of a ground improvement body reaches a position separate by a desired distance from a penetration position of an injection pipe without being affected by a soil property of a ground.SOLUTION: An outer edge checking apparatus 20 for checking the outer edge of a ground improvement body K which is established by lifting an injection pipe 12 and high-pressure injecting hardener liquid 17 from the injection pipe 12 to the periphery of the injection pipe 12, comprises: a rod 21 penetrating a position separate from a penetration position P1 of the injection pipe 12 by a predetermined distance L1 with respect to a ground G; a vibration detecting sensor 22 that is disposed on the rod 21 and detects vibration of the ground G caused by the high-pressure injection; and a determination device 23 connected to the vibration detecting sensor 22. The determination device 23 has a storage unit 25 which stores a predetermined threshold, and a calculation unit 26 which determines whether the outer edge of the ground improvement body K reaches the vicinity of the penetration position of the rod 21 by comparing a value detected by the vibration detecting sensor 22 with the threshold stored in the storage unit 25.SELECTED DRAWING: Figure 1
【課題】地盤の土質の影響を受けずに地盤改良体の外縁が噴射管の貫入位置から所望の距離離れた位置に到達しているかどうかを判断する。【解決手段】噴射管１２を引き上げつつ噴射管１２から硬化材液１７を噴射管１２の周囲に高圧噴射させて造成された地盤改良体Ｋの外縁を確認するための外縁確認装置２０であって、地盤Ｇに対して噴射管１２の貫入位置Ｐ１から所定距離Ｌ１離れた位置に貫入されるロッド２１と、ロッド２１に配置され前記高圧噴射に伴う地盤Ｇの振動を検知する振動検知センサ２２と、振動検知センサ２２に接続される判断装置２３とを備え、判断装置２３は、所定のしきい値を記憶する記憶部２５と、振動検知センサ２２による検出値を前記記憶部２５に記憶されたしきい値と比較して地盤改良体Ｋの外縁が前記ロッド２１の貫入位置の近傍に達しているかどうかを判断する演算部２６とを有する。【選択図】図１
OUTER EDGE CHECKING APPARATUS FOR GROUND IMPROVEMENT BODY
PROBLEM TO BE SOLVED: To determine whether the outer edge of a ground improvement body reaches a position separate by a desired distance from a penetration position of an injection pipe without being affected by a soil property of a ground.SOLUTION: An outer edge checking apparatus 20 for checking the outer edge of a ground improvement body K which is established by lifting an injection pipe 12 and high-pressure injecting hardener liquid 17 from the injection pipe 12 to the periphery of the injection pipe 12, comprises: a rod 21 penetrating a position separate from a penetration position P1 of the injection pipe 12 by a predetermined distance L1 with respect to a ground G; a vibration detecting sensor 22 that is disposed on the rod 21 and detects vibration of the ground G caused by the high-pressure injection; and a determination device 23 connected to the vibration detecting sensor 22. The determination device 23 has a storage unit 25 which stores a predetermined threshold, and a calculation unit 26 which determines whether the outer edge of the ground improvement body K reaches the vicinity of the penetration position of the rod 21 by comparing a value detected by the vibration detecting sensor 22 with the threshold stored in the storage unit 25.SELECTED DRAWING: Figure 1
【課題】地盤の土質の影響を受けずに地盤改良体の外縁が噴射管の貫入位置から所望の距離離れた位置に到達しているかどうかを判断する。【解決手段】噴射管１２を引き上げつつ噴射管１２から硬化材液１７を噴射管１２の周囲に高圧噴射させて造成された地盤改良体Ｋの外縁を確認するための外縁確認装置２０であって、地盤Ｇに対して噴射管１２の貫入位置Ｐ１から所定距離Ｌ１離れた位置に貫入されるロッド２１と、ロッド２１に配置され前記高圧噴射に伴う地盤Ｇの振動を検知する振動検知センサ２２と、振動検知センサ２２に接続される判断装置２３とを備え、判断装置２３は、所定のしきい値を記憶する記憶部２５と、振動検知センサ２２による検出値を前記記憶部２５に記憶されたしきい値と比較して地盤改良体Ｋの外縁が前記ロッド２１の貫入位置の近傍に達しているかどうかを判断する演算部２６とを有する。【選択図】図１
OUTER EDGE CHECKING APPARATUS FOR GROUND IMPROVEMENT BODY
地盤改良体の外縁確認装置
OSHIMA HIROSHI (author)
2018-08-09
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
GROUND IMPROVEMENT BODY CREATION APPARATUS, AND GROUND IMPROVEMENT BODY CREATION METHOD
| European Patent Office | 2022