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A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To obtain a ground reinforcing method capable of constructing a concrete columnar reinforcing body with which it is possible to efficiently obtain great bearing force with simple construction by supposing a small-scale foundation pile.SOLUTION: On a tip surface of a casing steel pipe 2, an end surface plate 3, which has a diameter Dthat is 1.5 to 3.2 times of a diameter d of the casing steel pipe and in which a concave part 8 having a circular outline of the diameter Dis formed in a central portion, is installed via a joint member 12 fixed on the end surface plate so that it is disengageable. Slope surface parts 6 and 7 that slope in opposite directions up and down each other are provided on a flange part 4 of the end surface plate 3. A casing steel pipe with the end surface plate 11 rotationally penetrates underground, cement-based injection material for a pile body is injected into the casing steel pipe, the casing steel pipe is rotated in an opposite direction to a rotary direction at the time when penetrating, and the casing steel pipe is pulled out while the end surface plate remains in order to construct a concrete columnar reinforcing body.SELECTED DRAWING: Figure 1
【課題】小規模の基礎杭を想定し、簡単な施工にて大きな支持力を効率的に得ることができるコンクリート柱状補強体を構築可能な地盤補強工法を得る。【解決手段】ケーシング鋼管２の先端面に、直径Ｄ０がケーシング鋼管の直径ｄの１．５〜３．２倍で、かつ中央部に直径Ｄ１の円形輪郭の凹部８を形成した端面板３を、端面板に固定した継手部材１２にて係脱可能に取り付ける。端面板３の鍔部４に互いに上下逆向きに傾斜した傾斜面部６、７を持つ。端面板付きケーシング鋼管１１を地中に回転貫入し、ケーシング鋼管内に杭体用セメント系注入材を注入し、ケーシング鋼管を貫入時の回転方向と逆方向に回転させて、端面板を残した状態で引き抜くことで、コンクリート柱状補強体を構築する。【選択図】図１
PROBLEM TO BE SOLVED: To obtain a ground reinforcing method capable of constructing a concrete columnar reinforcing body with which it is possible to efficiently obtain great bearing force with simple construction by supposing a small-scale foundation pile.SOLUTION: On a tip surface of a casing steel pipe 2, an end surface plate 3, which has a diameter Dthat is 1.5 to 3.2 times of a diameter d of the casing steel pipe and in which a concave part 8 having a circular outline of the diameter Dis formed in a central portion, is installed via a joint member 12 fixed on the end surface plate so that it is disengageable. Slope surface parts 6 and 7 that slope in opposite directions up and down each other are provided on a flange part 4 of the end surface plate 3. A casing steel pipe with the end surface plate 11 rotationally penetrates underground, cement-based injection material for a pile body is injected into the casing steel pipe, the casing steel pipe is rotated in an opposite direction to a rotary direction at the time when penetrating, and the casing steel pipe is pulled out while the end surface plate remains in order to construct a concrete columnar reinforcing body.SELECTED DRAWING: Figure 1
【課題】小規模の基礎杭を想定し、簡単な施工にて大きな支持力を効率的に得ることができるコンクリート柱状補強体を構築可能な地盤補強工法を得る。【解決手段】ケーシング鋼管２の先端面に、直径Ｄ０がケーシング鋼管の直径ｄの１．５〜３．２倍で、かつ中央部に直径Ｄ１の円形輪郭の凹部８を形成した端面板３を、端面板に固定した継手部材１２にて係脱可能に取り付ける。端面板３の鍔部４に互いに上下逆向きに傾斜した傾斜面部６、７を持つ。端面板付きケーシング鋼管１１を地中に回転貫入し、ケーシング鋼管内に杭体用セメント系注入材を注入し、ケーシング鋼管を貫入時の回転方向と逆方向に回転させて、端面板を残した状態で引き抜くことで、コンクリート柱状補強体を構築する。【選択図】図１
GROUND REINFORCING METHOD
地盤補強工法
ENOMOTO TAKAHIKO (author)
2018-04-26
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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