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A platform for research: civil engineering, architecture and urbanism
AGITATION DEVICE AND GROUND IMPROVEMENT METHOD FOR PILE EMBEDDING HOLE
To improve the strength and rigidity of a ground after an embedded pile is removed to the equivalent strength and rigidity of surrounding grounds and reduce construction costs.SOLUTION: When braking blades 78 are located in sediments with high viscosity, agitation of sediments that accumulates in a pile embedding hole from which an embedded pile has been removed is developed by a plurality of second rotary blades 62 for which the rotary speed is high and a plurality of first rotary blades 76 for which the rotary speed is low. Therefore, a solidification material supplied from a solidification material supply unit and sediments are mixed efficiently and evenly. When the braking blades 78 are located in muddy water with low viscosity, even if the rotary speed of the first rotary blades 76 and the rotary speed of the second rotary blades 62 match, agitation of sediments that accumulates in a pile embedding hole from which an embedded pile has been removed is developed by moving an agitation device 46 vertically. Therefore, a solidification material supplied from the solidification material supply unit and sediments are mixed efficiently and evenly.SELECTED DRAWING: Figure 2
【課題】埋設杭の撤去後の地盤を周辺の地盤と同等の強度、剛性に改良し、施工コストの低減を図る。【解決手段】制動羽根７８が粘性が高い堆積土砂中に位置するときに、回転速度が速い複数の第２回転羽根６２と、回転速度が遅い複数の第１回転羽根７６との双方により、埋設杭を撤去した杭埋設孔に堆積する堆積土砂の撹拌が促進されるため、固化材供給部から供給される固化材と堆積土砂が効率よく均一に混合される。制動羽根７８が粘性が低い泥水中に位置するときに、第１回転羽根７６と第２回転羽根６２の回転速度が一致した場合であっても、撹拌装置４６を上下に移動させることで埋設杭を撤去した杭埋設孔に堆積する堆積土砂の撹拌が促進されるため、固化材供給部から供給される固化材と堆積土砂が効率よく均一に混合される。【選択図】図２
AGITATION DEVICE AND GROUND IMPROVEMENT METHOD FOR PILE EMBEDDING HOLE
To improve the strength and rigidity of a ground after an embedded pile is removed to the equivalent strength and rigidity of surrounding grounds and reduce construction costs.SOLUTION: When braking blades 78 are located in sediments with high viscosity, agitation of sediments that accumulates in a pile embedding hole from which an embedded pile has been removed is developed by a plurality of second rotary blades 62 for which the rotary speed is high and a plurality of first rotary blades 76 for which the rotary speed is low. Therefore, a solidification material supplied from a solidification material supply unit and sediments are mixed efficiently and evenly. When the braking blades 78 are located in muddy water with low viscosity, even if the rotary speed of the first rotary blades 76 and the rotary speed of the second rotary blades 62 match, agitation of sediments that accumulates in a pile embedding hole from which an embedded pile has been removed is developed by moving an agitation device 46 vertically. Therefore, a solidification material supplied from the solidification material supply unit and sediments are mixed efficiently and evenly.SELECTED DRAWING: Figure 2
【課題】埋設杭の撤去後の地盤を周辺の地盤と同等の強度、剛性に改良し、施工コストの低減を図る。【解決手段】制動羽根７８が粘性が高い堆積土砂中に位置するときに、回転速度が速い複数の第２回転羽根６２と、回転速度が遅い複数の第１回転羽根７６との双方により、埋設杭を撤去した杭埋設孔に堆積する堆積土砂の撹拌が促進されるため、固化材供給部から供給される固化材と堆積土砂が効率よく均一に混合される。制動羽根７８が粘性が低い泥水中に位置するときに、第１回転羽根７６と第２回転羽根６２の回転速度が一致した場合であっても、撹拌装置４６を上下に移動させることで埋設杭を撤去した杭埋設孔に堆積する堆積土砂の撹拌が促進されるため、固化材供給部から供給される固化材と堆積土砂が効率よく均一に混合される。【選択図】図２
AGITATION DEVICE AND GROUND IMPROVEMENT METHOD FOR PILE EMBEDDING HOLE
撹拌装置および杭埋設孔の地盤改良方法
MARU TAKAHIRO (author) / MISHIMA SHINYA (author) / KANEKO SEIICHI (author)
2020-10-29
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
AGITATION DEVICE AND GROUND IMPROVEMENT METHOD OF PILE BURYING HOLE
| European Patent Office | 2021