A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EXCAVATING AND AGITATING APPARATUS
To provide an excavating and agitating apparatus capable of forming a columnar improved body having a large supporting force with respect to a foundation pile around the foundation pile without being restricted by a timing at which the foundation pile is installed.SOLUTION: An excavating and agitating apparatus 10 that excavates the ground around a steel pipe pile 2 buried in the ground and mixes and agitates a cement-based solidifying material with the agitated soil to form the columnar improved body 3 around a foundation pile comprises a cylindrical casing 11 that covers a pile head of the steel pipe pile 2 and rotates around the axis of the foundation pile during excavation and agitation, excavating blades 14 and 15 extending from an outer peripheral surface of the casing 11 in the radial direction of the casing 11 and fixed to the casing 11, and supply channels 13 and 13 that are provided on the outer peripheral surface of the casing 11 and supply the cement-based solidifying material to sediment so that the cement-based solidifying material is introduced from the base end of the casing 11 and discharged from the base end of the excavating blade 14 or the vicinity thereof.SELECTED DRAWING: Figure 4
【課題】基礎杭を打設するタイミングに制限を受けずに、基礎杭の周りに基礎杭に対して支持力が大きい柱状改良体を形成することができる掘削撹拌装置を提供する。【解決手段】地中に埋設された鋼管杭２の周囲の地盤を掘削して撹拌した土砂にセメント系固化材を混合撹拌して、基礎杭の周囲に柱状改良体３を形成する掘削撹拌装置１０は、鋼管杭２の杭頭部を覆い、掘削時および撹拌時に、基礎杭の軸線まわりに回転する円筒状のケーシング１１と、ケーシング１１の外周面から、ケーシング１１の径方向に延在し、ケーシング１１に固着された掘削翼１４，１５と、ケーシング１１の外周面に設けられ、ケーシング１１の基端からセメント系固化材が導入され、掘削翼１４の基端またはその近傍から吐出されるようにセメント系固化材を土砂に供給する供給流路１３，１３と、を備える。【選択図】図４
EXCAVATING AND AGITATING APPARATUS
To provide an excavating and agitating apparatus capable of forming a columnar improved body having a large supporting force with respect to a foundation pile around the foundation pile without being restricted by a timing at which the foundation pile is installed.SOLUTION: An excavating and agitating apparatus 10 that excavates the ground around a steel pipe pile 2 buried in the ground and mixes and agitates a cement-based solidifying material with the agitated soil to form the columnar improved body 3 around a foundation pile comprises a cylindrical casing 11 that covers a pile head of the steel pipe pile 2 and rotates around the axis of the foundation pile during excavation and agitation, excavating blades 14 and 15 extending from an outer peripheral surface of the casing 11 in the radial direction of the casing 11 and fixed to the casing 11, and supply channels 13 and 13 that are provided on the outer peripheral surface of the casing 11 and supply the cement-based solidifying material to sediment so that the cement-based solidifying material is introduced from the base end of the casing 11 and discharged from the base end of the excavating blade 14 or the vicinity thereof.SELECTED DRAWING: Figure 4
【課題】基礎杭を打設するタイミングに制限を受けずに、基礎杭の周りに基礎杭に対して支持力が大きい柱状改良体を形成することができる掘削撹拌装置を提供する。【解決手段】地中に埋設された鋼管杭２の周囲の地盤を掘削して撹拌した土砂にセメント系固化材を混合撹拌して、基礎杭の周囲に柱状改良体３を形成する掘削撹拌装置１０は、鋼管杭２の杭頭部を覆い、掘削時および撹拌時に、基礎杭の軸線まわりに回転する円筒状のケーシング１１と、ケーシング１１の外周面から、ケーシング１１の径方向に延在し、ケーシング１１に固着された掘削翼１４，１５と、ケーシング１１の外周面に設けられ、ケーシング１１の基端からセメント系固化材が導入され、掘削翼１４の基端またはその近傍から吐出されるようにセメント系固化材を土砂に供給する供給流路１３，１３と、を備える。【選択図】図４
EXCAVATING AND AGITATING APPARATUS
掘削撹拌装置
ICHIMURA HITOSHI (author) / TAKAHASHI SHUICHI (author) / SUGA MASANORI (author)
2020-01-09
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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