A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a screw-in type steel pipe pile which prevents an adverse effect in a bearing power, does not affect an increase in a manufacturing cost and an adjacent screw-in type steel pipe pile, and is excellent in workability in a hard ground and a cohesive soil ground.SOLUTION: A screw-in type steel pipe pile 1 has a rotary blade 5 provided on the tip or tip viscosity of a steel pipe 3, and has an outward moving projection 7 and an inward moving projection, which control movement of sediment so that the sediment moving to the upper surface of an inclination part in the rotary blade 5 during rotation and penetration moves outward and/or inward along with the rotation of the rotary blade 5, provided on the upper surface of the rotary blade 5.SELECTED DRAWING: Figure 1
【課題】支持力に悪影響が生じず、製作コストの上昇や隣接するねじ込み式鋼管杭にも影響することなく、硬い地盤及び粘性土地盤において施工性に優れるねじ込み式鋼管杭を提供する。【解決手段】ねじ込み式鋼管杭１は、鋼管３の先端又は先端近傍に回転翼５を設けたねじ込み式鋼管杭１であって、回転貫入中に回転翼５における前記傾斜部の上面に移動した土砂が、回転翼５の回転に伴い外方及び／又は内方へ移動するように土砂の移動を制御する外動突起７、内動突起を、回転翼５の上面に設けたことを特徴とするものである。【選択図】図１
To provide a screw-in type steel pipe pile which prevents an adverse effect in a bearing power, does not affect an increase in a manufacturing cost and an adjacent screw-in type steel pipe pile, and is excellent in workability in a hard ground and a cohesive soil ground.SOLUTION: A screw-in type steel pipe pile 1 has a rotary blade 5 provided on the tip or tip viscosity of a steel pipe 3, and has an outward moving projection 7 and an inward moving projection, which control movement of sediment so that the sediment moving to the upper surface of an inclination part in the rotary blade 5 during rotation and penetration moves outward and/or inward along with the rotation of the rotary blade 5, provided on the upper surface of the rotary blade 5.SELECTED DRAWING: Figure 1
【課題】支持力に悪影響が生じず、製作コストの上昇や隣接するねじ込み式鋼管杭にも影響することなく、硬い地盤及び粘性土地盤において施工性に優れるねじ込み式鋼管杭を提供する。【解決手段】ねじ込み式鋼管杭１は、鋼管３の先端又は先端近傍に回転翼５を設けたねじ込み式鋼管杭１であって、回転貫入中に回転翼５における前記傾斜部の上面に移動した土砂が、回転翼５の回転に伴い外方及び／又は内方へ移動するように土砂の移動を制御する外動突起７、内動突起を、回転翼５の上面に設けたことを特徴とするものである。【選択図】図１
SCREW-IN TYPE STEEL PIPE PILE
ねじ込み式鋼管杭
ICHIKAWA KAZUOMI (author)
2019-08-08
Patent
Electronic Resource
Japanese
IPC:
E02D
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