A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
DRILLING/AGITATION HEAD FOR INSTALLING STEEL PIPE SOIL CEMENT PILE
PROBLEM TO BE SOLVED: To provide a drilling/agitation head for installing a steel pipe soil cement pile in a hard ground that does not require other heavy machinery and curtails installation period at the same time reducing a cost because a lesser number of heavy machinery is used.SOLUTION: A drilling/agitation head 1 includes a shaft part 2 connected to a drilling rod, a lower drilling blade 3 provided at a tip of the shaft part 2, a pair of upper drilling blades 4 provided above the lower drilling blade, a plurality of co-rotation preventing blades 5 loosely fit on the shaft part 2, and a plurality of agitation blades 6. Drilling performance into a hard ground is improved when three or more of the lower drilling blades 3 are provided around a shaft of the shaft part 2, while suppressing deviation from a drilling shaft center at a time of drilling compared to a conventional two-blade drilling head. The co-rotation preventing blade 5 comprises a blade body 5a and a projection part 5b. Resistance from the ground against drilling is mitigated by making the projection part 5b thinner than the blade body 5a and using a material of higher strength than a material of the blade body 5a.SELECTED DRAWING: Figure 1
【課題】硬質地盤における鋼管ソイルセメント杭の施工において、別途、重機を必要とせず、工期短縮、重機減によるコスト縮減等が可能な掘削撹拌ヘッドを提供する。【解決手段】掘削撹拌ヘッド１は、掘削ロッドに接続される軸部２と、軸部２の先端部に設けられた下部掘削翼３と、その上方に設けられた１対の上部掘削翼４と、軸部２に遊嵌された複数枚の共回り防止翼５と、複数枚の撹拌翼６とを備える。下部掘削翼３は軸部２の軸周りに３枚以上設けることで、硬質地盤に対する掘進性能を向上させるとともに、従来一般的な２枚翼に比べ、掘削時における掘削軸心からのぶれを抑制する。共回り防止翼５は翼本体５ａと張出し部５ｂとで構成し、張出し部５ｂを翼本体５ａより薄くするとともに、翼本体５ａの材料より高強度の材料を用いることで、地盤の掘進抵抗を軽減する。【選択図】図１
DRILLING/AGITATION HEAD FOR INSTALLING STEEL PIPE SOIL CEMENT PILE
PROBLEM TO BE SOLVED: To provide a drilling/agitation head for installing a steel pipe soil cement pile in a hard ground that does not require other heavy machinery and curtails installation period at the same time reducing a cost because a lesser number of heavy machinery is used.SOLUTION: A drilling/agitation head 1 includes a shaft part 2 connected to a drilling rod, a lower drilling blade 3 provided at a tip of the shaft part 2, a pair of upper drilling blades 4 provided above the lower drilling blade, a plurality of co-rotation preventing blades 5 loosely fit on the shaft part 2, and a plurality of agitation blades 6. Drilling performance into a hard ground is improved when three or more of the lower drilling blades 3 are provided around a shaft of the shaft part 2, while suppressing deviation from a drilling shaft center at a time of drilling compared to a conventional two-blade drilling head. The co-rotation preventing blade 5 comprises a blade body 5a and a projection part 5b. Resistance from the ground against drilling is mitigated by making the projection part 5b thinner than the blade body 5a and using a material of higher strength than a material of the blade body 5a.SELECTED DRAWING: Figure 1
【課題】硬質地盤における鋼管ソイルセメント杭の施工において、別途、重機を必要とせず、工期短縮、重機減によるコスト縮減等が可能な掘削撹拌ヘッドを提供する。【解決手段】掘削撹拌ヘッド１は、掘削ロッドに接続される軸部２と、軸部２の先端部に設けられた下部掘削翼３と、その上方に設けられた１対の上部掘削翼４と、軸部２に遊嵌された複数枚の共回り防止翼５と、複数枚の撹拌翼６とを備える。下部掘削翼３は軸部２の軸周りに３枚以上設けることで、硬質地盤に対する掘進性能を向上させるとともに、従来一般的な２枚翼に比べ、掘削時における掘削軸心からのぶれを抑制する。共回り防止翼５は翼本体５ａと張出し部５ｂとで構成し、張出し部５ｂを翼本体５ａより薄くするとともに、翼本体５ａの材料より高強度の材料を用いることで、地盤の掘進抵抗を軽減する。【選択図】図１
DRILLING/AGITATION HEAD FOR INSTALLING STEEL PIPE SOIL CEMENT PILE
鋼管ソイルセメント杭施工用掘削撹拌ヘッド
HORIKIRI SETSU (author) / ISHIKAWA MASAHIRO (author) / MURAYAMA ATSUSHI (author) / YAMAJI YASUHIRO (author) / YOSHIZAWA YUKITO (author) / HIRATA TAKASHI (author) / KATO ATSUSHI (author)
2017-11-02
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023
STEEL PIPE PILE AND METHOD FOR INSTALLING STEEL PIPE PILE
| European Patent Office | 2020
STEEL PIPE PILE DEVICE, STEEL PIPE PILE AND METHOD FOR INSTALLING STEEL PIPE PILE
| European Patent Office | 2018
STEEL PIPE PILE AND METHOD FOR INSTALLING STEEL PIPE PILE
| European Patent Office | 2020
Combined foundation pile composed of steel pipe pile and cement soil pile
| European Patent Office | 2021