A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide an auger for ground improvement that forms a stable columnar body having large friction with surrounding soil.SOLUTION: An auger for ground improvement includes: an auger shaft 100 extending in a prescribed direction; a spiral conveyance part 110 protruded spirally on an outer periphery of the auger shaft 100 and conveying materials containing excavated soil in the prescribed direction as the auger shaft rotates; a relay part 120 having a first end extending in the prescribed direction from the auger shaft; a roughly conical head 130 extending in the prescribed direction from a second end of the relay part, the head having a diameter that tapers in a direction away from the relay part; and blades 140, 150 protruded from an outer periphery of the head 130. The blades 140, 150 have a pressing surface for compacting the material on surrounding soil when the auger shaft rotates. An area at the second end of the relay part 120 is smaller than an area at the first end, when seen on a cross-section orthogonal to the prescribed direction.SELECTED DRAWING: Figure 1
【課題】周辺土との摩擦の大きい安定した柱状体を形成する地盤改良オーガーを提供する。【解決手段】地盤改良オーガーは、所定方向に延在するオーガー軸１００と、オーガー軸１００の外周に螺旋状に突設されて、オーガー軸の回転にともなって掘削土を含む材料を所定方向に沿って移動させる螺旋搬送部１１０と、一端においてオーガー軸から所定方向に延在する中継部１２０と、中継部の他端から所定方向に延在して、中継部から遠ざかるほど径が減少する略円錐形のヘッド１３０と、ヘッド１３０の外周から突設されたブレード１４０，１５０と、を備え、ブレード１４０，１５０が、オーガー軸の回転時に、周辺土に対して材料を締め固める押圧面を有し、所定方向に直交する断面でみたとき、中継部１２０の他端における面積が、一端における面積より小さい。【選択図】図１
PROBLEM TO BE SOLVED: To provide an auger for ground improvement that forms a stable columnar body having large friction with surrounding soil.SOLUTION: An auger for ground improvement includes: an auger shaft 100 extending in a prescribed direction; a spiral conveyance part 110 protruded spirally on an outer periphery of the auger shaft 100 and conveying materials containing excavated soil in the prescribed direction as the auger shaft rotates; a relay part 120 having a first end extending in the prescribed direction from the auger shaft; a roughly conical head 130 extending in the prescribed direction from a second end of the relay part, the head having a diameter that tapers in a direction away from the relay part; and blades 140, 150 protruded from an outer periphery of the head 130. The blades 140, 150 have a pressing surface for compacting the material on surrounding soil when the auger shaft rotates. An area at the second end of the relay part 120 is smaller than an area at the first end, when seen on a cross-section orthogonal to the prescribed direction.SELECTED DRAWING: Figure 1
【課題】周辺土との摩擦の大きい安定した柱状体を形成する地盤改良オーガーを提供する。【解決手段】地盤改良オーガーは、所定方向に延在するオーガー軸１００と、オーガー軸１００の外周に螺旋状に突設されて、オーガー軸の回転にともなって掘削土を含む材料を所定方向に沿って移動させる螺旋搬送部１１０と、一端においてオーガー軸から所定方向に延在する中継部１２０と、中継部の他端から所定方向に延在して、中継部から遠ざかるほど径が減少する略円錐形のヘッド１３０と、ヘッド１３０の外周から突設されたブレード１４０，１５０と、を備え、ブレード１４０，１５０が、オーガー軸の回転時に、周辺土に対して材料を締め固める押圧面を有し、所定方向に直交する断面でみたとき、中継部１２０の他端における面積が、一端における面積より小さい。【選択図】図１
AUGER FOR GROUND IMPROVEMENT
地盤改良オーガー
IIDA TETSUO (author)
2016-11-04
Patent
Electronic Resource
Japanese
IPC:
E02D
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