A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a removal device of an existing pile in which complicated processing is not required on an inner peripheral face side and the like of a pipe body, and a blade member rotated to an inside of the pipe body and supporting an existing pile is easily manufactured, and which has high durability.SOLUTION: An removal device 1 of an existing pile comprises: a pipe body 2 exteriorly mounted on an existing pile P; and a blade member 10 provided at a tip face 3 of the pipe body 2 and capable of moving to a center axis side of the pipe body 2. The blade member 10 is rotatably attached to the tip face 3 of the pipe body 2, and a resistance portion 12 receiving soil pressure when the pipe body 2 is rotated in a reverse direction in bottom face view is provided so as to extend to an outer part of an outer peripheral face of the pipe body 2 in the blade member 10. On the outer peripheral face of the pipe body 2, there is provided a stopper 7 which restricts rotation of the blade member 10 due to the resistance portion 12 when the pipe body 2 is rotated in a normal direction in the bottom face view.SELECTED DRAWING: Figure 1
【課題】管体の内周面側などに煩雑な加工を要さないと共に、前記管体の内側に回転させて既設杭を支持する羽根部材も製作し易く、且つ耐久性にも優れている既設杭の撤去装置を提供する。【解決手段】既設杭Ｐに外装する管体２と、該管体２の先端面３に設けられ、前記管体２の中心軸側に移動可能な羽根部材１０とを備え、前記羽根材１０は、前記管体２の先端面３に回転可能に取り付けられ、管体２を底面視で逆方向に回転させた時に、土の抵抗を受ける抵抗部１２を、羽根部材１０における管体２の外周面の外方に延設しており、管体２を底面視で正方向に回転させた時に、抵抗部１２による羽根部材１０の回転を規制するストッパ７を管体２の外周面に設けている、既設杭の撤去装置１。【選択図】 図１
To provide a removal device of an existing pile in which complicated processing is not required on an inner peripheral face side and the like of a pipe body, and a blade member rotated to an inside of the pipe body and supporting an existing pile is easily manufactured, and which has high durability.SOLUTION: An removal device 1 of an existing pile comprises: a pipe body 2 exteriorly mounted on an existing pile P; and a blade member 10 provided at a tip face 3 of the pipe body 2 and capable of moving to a center axis side of the pipe body 2. The blade member 10 is rotatably attached to the tip face 3 of the pipe body 2, and a resistance portion 12 receiving soil pressure when the pipe body 2 is rotated in a reverse direction in bottom face view is provided so as to extend to an outer part of an outer peripheral face of the pipe body 2 in the blade member 10. On the outer peripheral face of the pipe body 2, there is provided a stopper 7 which restricts rotation of the blade member 10 due to the resistance portion 12 when the pipe body 2 is rotated in a normal direction in the bottom face view.SELECTED DRAWING: Figure 1
【課題】管体の内周面側などに煩雑な加工を要さないと共に、前記管体の内側に回転させて既設杭を支持する羽根部材も製作し易く、且つ耐久性にも優れている既設杭の撤去装置を提供する。【解決手段】既設杭Ｐに外装する管体２と、該管体２の先端面３に設けられ、前記管体２の中心軸側に移動可能な羽根部材１０とを備え、前記羽根材１０は、前記管体２の先端面３に回転可能に取り付けられ、管体２を底面視で逆方向に回転させた時に、土の抵抗を受ける抵抗部１２を、羽根部材１０における管体２の外周面の外方に延設しており、管体２を底面視で正方向に回転させた時に、抵抗部１２による羽根部材１０の回転を規制するストッパ７を管体２の外周面に設けている、既設杭の撤去装置１。【選択図】 図１
REMOVAL DEVICE OF EXISTING PILE
既設杭の撤去装置
KOJIMA KAZUHIKO (author)
2021-04-08
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| European Patent Office | 2022
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| European Patent Office | 2022
EXISTING PILE REMOVAL DEVICE AND EXISTING PILE REMOVAL METHOD
| European Patent Office | 2022