JPS5850220A - Construction of pile in ground - Google Patents
Construction of pile in groundInfo
- Publication number
- JPS5850220A JPS5850220A JP15004381A JP15004381A JPS5850220A JP S5850220 A JPS5850220 A JP S5850220A JP 15004381 A JP15004381 A JP 15004381A JP 15004381 A JP15004381 A JP 15004381A JP S5850220 A JPS5850220 A JP S5850220A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- mixed
- excavation
- aggregate
- excavation shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、地盤への杭の築造方法に関し、掘削軸（１）
のＴｉからセメントミルクのような土砂固結剤（２）ｔ
−噴出しながら地盤（３）を掘削すると共に掘削土砂と
土砂固結剤（２）とを混合して第１次混合±（５）ｔ−
土中に形成しつつ掘進し、所定の位置に掘削軸＋１）の
下端な到達させる第１工程と、掘削軸ｉｔ）の掘進によ
っ□て地上に揚土された第１次混合±（ｒｌ）にセメン
ト、フライアッシュ等の土砂固結剤と骨材としての砂吟
を必要強度が生じるように加えてこれを再混練して骨材
入シ第２次混合土（７）を製作する第２工程と、第１次
混合土（５）の造成において掘削軸（１）の下端が所定
位置に到達した後に掘削軸（１）の下端から第１工程に
おける土砂固結剤（りＫかえ、、て第２工程で製作する
骨材入り第２次混合±（７）を圧出して掘削孔（８）中
に充填しクク掘創軸１１）を引き上げ、掘削孔・ｉｌ）
に骨材入シ第２次混合土（７）が充填された杭’＋ｉｔ
） を形成する第３工程よりなることを特黴とする地盤
への杭の築造方法に係るものである従来地盤に杭を築造
する工法として例えば特公昭５５−５０５４３号公報に
示された工法が知られている。この従来例にあっては、
単に地盤を掘削しながらセメントミルクを噴出し、これ
を掘削と同時に混合して杭を形成していただけであった
０このため、いかに地中で混合するといえども上下方向
において均一な強度の杭を形成するのは不可能であった
。また掘削土砂が粘土のようなものの場合セメントミル
クと混合しても骨材がないため形成される杭の強度が弱
いものであつ７ｔ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing piles in the ground, and includes an excavation shaft (1).
Sediment consolidation agent like cement milk from Ti (2)t
- While excavating the ground (3) while gushing, the excavated soil and soil consolidation agent (2) are mixed for the first mixing ± (5) t-
The first step is to excavate while forming in the soil and reach the lower end of the excavation axis +1) at a predetermined position, and the first mix ± (rl ), add soil consolidation agents such as cement and fly ash, and sand gin as an aggregate to obtain the required strength, and knead the mixture again to produce aggregate-containing secondary mixed soil (7). In the second step, after the lower end of the excavation shaft (1) reaches the predetermined position in the preparation of the first mixed soil (5), the earth and sand consolidation agent in the first step is applied from the lower end of the excavation shaft (1). , the secondary mixture containing aggregate (7) produced in the second step is squeezed out and filled into the excavation hole (8), and the excavation shaft 11) is pulled up and the excavation hole
Pile filled with aggregate-containing secondary mixed soil (7)
This relates to a method for constructing piles in the ground that is characterized by a third step of forming a Are known. In this conventional example,
Cement milk was simply squirted out while excavating the ground, and then mixed at the same time as the excavation to form piles.For this reason, no matter how much the mixture was mixed underground, it was difficult to create piles with uniform strength in the vertical direction. It was impossible to form. In addition, if the excavated soil is made of clay, there is no aggregate even if it is mixed with cement milk, so the strength of the pile formed is weak (7 tons).
本発明は上記の従来の欠点に鑑みて発明し次ものであっ
て、その目的とするところは、上下方向に均一で且つ必
要設計強度の杭を築造でき、また地上に揚土され次もの
の処分の必要が少なく再使用できてコストを下げること
のできる地盤への杭の築造方法を提供するにある。The present invention was invented in view of the above-mentioned conventional drawbacks, and its purpose is to construct piles that are uniform in the vertical direction and have the required design strength, and to dispose of the next material after being lifted to the ground. The purpose of the present invention is to provide a method for constructing piles in the ground that requires less reuse, can be reused, and can reduce costs.
以下本発明を実施例により絆述する。図中ｔ１）は中空
パイプ状の掘削軸であって、外周に揚土兼撹ハ
ブ状で下端にピット（１２＋が設けてあシ、また掘削軸
（りの下端には噴出口−が設けである０この場合噴出口
０１を図の実施例のようにピット＋１２１部分に設けて
もよい。掘削軸（１）は１本でも、複数本並べ次もので
もよい。複数本並べたものの場合掘削軸１０を複数本横
方向に一直線状に並べてもよく、あるいけ弓状となるよ
うに並べてもよく、あるいは三角形、四角形等の多角形
状に並べてもよい。掘削軸（１）を複数本並べた場合掘
削軸＋１１の上端部は多軸装置０４に連結され、駆動装
置−の回転を多軸装置（１４）を介して各掘削軸（りに
伝えるようになっている。The present invention will be described below with reference to Examples. t1) in the figure is a hollow pipe-shaped excavation shaft, which has a soil lifting and stirring hub shape on the outer periphery, a pit (12+) is provided at the lower end, and a spout (-) is provided at the lower end of the excavation shaft (t1). Yes 0 In this case, the spout 01 may be provided in the pit +121 part as in the example shown in the figure.The excavation shaft (1) may be one or multiple in a row.In the case of multiple excavation shafts (1) A plurality of excavation shafts (1) may be arranged in a straight line in the horizontal direction, may be arranged in an arcuate shape, or may be arranged in a polygonal shape such as a triangle or a quadrangle.When a plurality of excavation shafts (1) are arranged in a row The upper end of the excavation shaft (11) is connected to a multi-axis device 04, so that the rotation of the drive device (14) is transmitted to each excavation shaft (14).
図中−は掘削軸ｆｉ＋に連通接続したホースである０し
かして本−ス輪をセメントミルクのような土砂固結剤（
りを供給するための土砂固結剤供給装置−に接続し、掘
削軸（１１の下端からセメントミルクのような土砂固結
剤（りｔ−噴出しながら地盤（３）を掘削しりつ掘削土
しと土砂固結剤（２１とを混合して第１次混合±１５）
ｔ−土中に形成しながら掘進していき、所定の位置□に
掘削軸ｆｌ）の下端を到達させる。上記工程を第１工程
とする。一方掘削軸（１）の掘進によって地上に揚土さ
れた第１次混合±＋５１をふるい（１７）にかけて過大
粒の礫土を除去し、次いで過大粒の礫土を除去した第１
次混合±（６）にセメント、フラ等
イアフシ１等の土砂固結剤と骨材となる砂を必要△
設計強度が生じるように追加してこれを三十す−ＯＬ１
で再混練して骨材入夛第２次混合±（７）を製作する。In the figure, - is a hose connected to the excavation shaft fi+.
The excavated soil is connected to the earth and sand consolidation agent supply device for supplying soil (3), and excavates the ground (3) while spouting earth and sand consolidation agent (liquid) such as cement milk from the lower end of the excavation shaft (11). Shito and sand consolidation agent (first mixing ±15 by mixing with 21)
t- Continue digging while forming in the soil, and reach the lower end of the excavation shaft fl) at a predetermined position □. The above step is referred to as the first step. On the other hand, the primary mixture ±+51 lifted to the ground by the excavation shaft (1) is sieved (17) to remove oversized gravel, and then the
Next mix ± (6) requires cement, flier, etc., soil consolidation agent such as Iafushi 1, and sand to serve as aggregate.
The mixture is kneaded again to produce a secondary mixture containing aggregate (7).
これを４！Ｉ２工程とする。ここで図中−は第２次混合
土製作供給装置であり、ペースト状の第１次混合士（６
）を吸引する吸込部−１ふるいＯ乃、！中す−Ｏ瞬、ポ
ンプ（図示せず）等を有している。次に第１次混合±（
５）の造成において掘削軸（１）の下端から第１工程に
かける土砂固結剤（！ＩＫかえて第２工程で製作する骨
材人ＤＪ！Ｊ！１２次混合±（〕）を圧出して掘削孔（
８）に充填しながら掘削軸（１）を引き上げ、掘削孔（
８）中に下方よシ順に上方に向けて骨材入り第２次混合
±（１）を充填することで掘削孔（８）に骨材入シ第２
次混合±（１）が充填された杭（９）を形成する。これ
を第３工程とする。第３工程においては本−スＨを第２
次混合土製作供給装置（Ｉｌｌに接続するものである。This is 4! This is the I2 process. Here, - in the figure is the secondary mixed soil production and supply device, and the paste-like primary mixer (6
) suction part-1 sieve Ono,! It has a middle pump, a pump (not shown), and the like. Next, the first mixing ±(
5) In the preparation of step 5), extrude the earth and sand consolidation agent (! IK, instead, the aggregate DJ! J! 12th mixture ± ()) to be applied in the 1st process from the lower end of the excavation shaft (1) to be produced in the 2nd process. Drill hole (
8), pull up the drilling shaft (1) and open the drilling hole (
8) Filling the second aggregate-containing mixture ± (1) from downward to upward in the drilled hole (8).
Form a pile (9) filled with the following mixture ± (1). This is the third step. In the third step, the main base H is
This is connected to the next mixed soil production supply device (Ill).
また第３工程中掘削孔（８）中に骨材入ＩＪ第２次混合
±（７）を圧出すると、それにつれて第１次混合±（５
）を構成する第１次混合±（６）が次々と地上に揚土さ
れるが、この第１次混合±Ｔ６＋を第２次混合上製作供
給装置−によって骨材入シ第２次混合±１７）とし、再
び掘削軸１１）の下端よシ掘削孔（８）中に圧充填する
のである。この時掘削軸＋１）は回転しながら引き上け
てもよく、回転しないで引き上げてもよい。また骨材入
り第２次混合±（７）を掘削孔開の下方よ〕圧充填する
ことで掘削軸＋１１及び第１次混合±＋６１が上方に押
し上けられるものである。上記の第１工程、第２工程、
第３工程によって地盤中に必要設計強度の杭（９）を形
成するのである。なお必１１’に応じて第３工程の後で
４Ｉｃ（９１中に必要な曲は強度、その他の強度を担尚
する鋼管その他の構造材−を建込む第４工程をつけ加わ
えてもよい。上記のようにして単独の杭（９）を築造し
てもよいが、杭（９）の端部が互いに重複するようにし
て連続して形成すると山留壁を形成できるものである。In addition, when the aggregate-containing IJ secondary mixture ± (7) is squeezed out into the excavation hole (8) during the third step, the primary mixture ± (5
) is brought up to the ground one after another, and this first mixture ±T6+ is mixed with aggregate by a production and feeding device -. 17), and the bottom end of the excavation shaft 11) is again filled under pressure into the excavation hole (8). At this time, the excavation shaft +1) may be pulled up while rotating, or may be pulled up without rotating. In addition, by pressurizing the secondary mixture (7) containing aggregate from below the opening of the excavation hole, the excavation shaft +11 and the primary mixture +61 are pushed upward. The above first step, second step,
In the third step, piles (9) with the required design strength are formed in the ground. If required, a fourth step may be added after the third step to erect 4Ic (necessary bends in 91 are for strength, and other structural materials such as steel pipes for additional strength). Although a single pile (9) may be constructed as described above, a retaining wall can be formed by forming the piles (9) in succession so that their ends overlap each other.
なお第３工中掘削孔（１１が夫々回転すると共に多軸装
置０４１も回転することで複″数本の掘削軸ｉｌｌが全
体として回転するようＫなっている。In addition, when the third under-construction excavation hole (11) rotates, the multi-axis device 041 also rotates, so that the plurality of excavation shafts rotate as a whole.
本発明にあっては、叙述のように掘削軸の′下端からセ
メントミルクのような土砂固結剤を噴出しながら地盤を
掘削すると共に掘削土砂と土砂固結剤とを混合して第１
法理合土を土中に形成しつつ掘進し、所定の位置に掘削
軸の下端を到達させる第１工程と掘削軸の掘進によって
地上に揚土されように加えてこれを再混練して骨材入り
第２法理合土を製作する第２工程と、第１法理合土の造
成において掘削軸の下端が所定位置に到達した後に掘削
軸の下端から第１工程における土砂固結剤にかえて第２
工程で製作する骨材入〉第２法理合土を圧出して掘削孔
中に充填しつつ掘削軸を引き上げ、掘削孔中に第２法理
合土が充填された杭を形成する第３工程とよりなるので
、最終的に掘削孔内には上下方向の全長にわたって所定
の強度に調整された骨材入り第２法理合土が充填されて
杭が築造されることとなり、所定の強度の杭を簡単に形
成できるという利点がある。しかも第１工程で掘削され
る掘削土砂が粘土質の場合、掘削土砂中に骨材となる砂
が存在しないのでこれとセメントミルクとをｉ合した第
１法理合土に第２工程で爽に土砂固結剤を混入したとし
ても骨材が存在しないため必要設計強度の杭とすること
ができないが確実に形成できるものであり、また必要設
計強度に調整するに当ってＩ１１！２工程で砂を混入す
ることで第２工程で混入する土砂固結剤の使用量が少く
てすみコストタウンがはかれるものである。更に杭を形
成するに当って地上に排土した混合土を再使用するので
、地上に排土した土砂の処分の必要が少なく、大巾にコ
ストタウンがはかれるものである。In the present invention, as described above, the ground is excavated while spouting an earth and sand consolidation agent such as cement milk from the lower end of the excavation shaft, and the excavated earth and sand are mixed with the earth and sand consolidation agent.
The first step is to excavate while forming legal soil in the soil and reach the lower end of the excavation shaft at a predetermined position. In the second step of producing the second law-consolidated soil, and after the lower end of the excavation shaft reaches a predetermined position in the preparation of the first law-consolidated soil, the soil consolidation agent is added from the lower end of the excavation shaft to the soil consolidation agent in the first step. 2
Adding aggregate produced in the process> A third step in which the excavation shaft is pulled up while pressing out the second legal soil and filling it into the excavation hole to form a pile filled with the second legal soil in the excavation hole. Therefore, in the end, the excavated hole is filled with aggregate-containing second-legal soil adjusted to the specified strength over the entire length in the vertical direction, and the pile is constructed. It has the advantage of being easy to form. Moreover, if the excavated soil excavated in the first step is clayey, there is no sand to serve as aggregate in the excavated soil, so this is mixed with cement milk to make the first legal soil, which is refreshed in the second step. Even if soil and sand consolidation agents are mixed in, it is not possible to make piles with the required design strength because there is no aggregate, but it is possible to form them reliably. By mixing in the soil, the amount of soil consolidation agent mixed in the second step can be reduced, resulting in cost savings. Furthermore, since the mixed soil excavated above the ground is reused in forming the piles, there is less need to dispose of the excavated earth and sand, and a large amount of cost can be achieved.
第１図（荀（６）（ｅ） ＜ｄ）け本発明の施工順序を
示す概略図、第２図（ａ） （ｂ） （Ｃ）は同上に用
いる掘削機の１例を示す概略正面図、第１法部合杭の形
成時の横断面図及び杭の形成時の横断面図、第３図（ａ
） （ｂ）は同上の掘削機の他側を示す概略正面図及び
第１法部合杭の形成時の横断面図であって、（１）は掘
削軸、（２）は土砂固結剤、（３）は地盤、
−（６）は第１法理合土、（７）は第２法理合土、（
８）は掘削孔、（９）は杭である。
代理人 弁理士 石 １）長 七
第１図
（０）
（ｂ）
第２図
（０）
第３図
（０）Fig. 1 (Xun (6) (e) < d) is a schematic diagram showing the construction sequence of the present invention, and Fig. 2 (a), (b), and (C) are schematic front views showing an example of an excavator used in the above. Fig. 3 (a)
) (b) is a schematic front view showing the other side of the same excavator as above and a cross-sectional view when forming the first legal section dowel, where (1) is the excavation shaft and (2) is the soil consolidation agent. , (3) is the ground,
- (6) is the first legal theory, (7) is the second legal theory, (
8) is a drilled hole, and (9) is a pile. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 (0) (b) Figure 2 (0) Figure 3 (0)
Claims (1)
砂固結剤を噴出しながら地盤を掘削すると共に掘削土砂
と土砂固結剤とを混合して第１次混合土を土中に形成し
つつ掘進し、所定の位置に掘削軸の下端を到達させる第
１工程と、掘削軸の掘進によって地上に揚土され次第１
次混合土にセメント、フライアワシュ等の土砂固結剤と
骨材としての砂等を必要強度が生じるように加えてこれ
を再混練して骨材入シ第２次混合土を製作する第２工程
と、第１次混合土の造成−おいて掘削軸の下端が所定位
置に到達した後に掘削軸の下端から第１工程における土
砂固結剤にかえてｇ５２工程で製作する骨材入り第２次
混合土を圧出して掘削孔中に充填しクク掘削軸を引き上
げ、掘削孔中に骨材入り第２次混合土が充填され次杭を
形成する第３工程よりなることを特徴とする地盤への杭
の築造方法(1) The ground is excavated while ejecting an earth and sand consolidation agent such as cement milk from the lower end of the excavation shaft, and the excavated earth and sand are mixed with the earth and sand consolidation agent to form a primary mixed soil in the soil. The first step is to advance the excavation and reach the lower end of the excavation shaft at a predetermined position, and the first step is as soon as the soil is lifted to the ground by the excavation shaft.
The second step is to add soil consolidation agents such as cement and fly ash to the next mixed soil and sand as an aggregate to obtain the required strength, and then knead the mixture again to produce a second mixed soil containing aggregate. After the lower end of the excavation shaft reaches the predetermined position during the preparation of the first mixed soil, the second soil containing aggregate produced in the G52 step is added from the lower end of the excavation shaft to the soil consolidation agent in the first step. To the ground characterized by the third step of pressing out the mixed soil and filling it into the excavation hole, pulling up the excavation shaft, and filling the excavation hole with the second mixed soil containing aggregate to form the next pile. How to build piles
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15004381A JPS5850220A (en) | 1981-09-22 | 1981-09-22 | Construction of pile in ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15004381A JPS5850220A (en) | 1981-09-22 | 1981-09-22 | Construction of pile in ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5850220A true JPS5850220A (en) | 1983-03-24 |
| JPS6140815B2 JPS6140815B2 (en) | 1986-09-11 |
Family
ID=15488249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15004381A Granted JPS5850220A (en) | 1981-09-22 | 1981-09-22 | Construction of pile in ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850220A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08291517A (en) * | 1995-03-14 | 1996-11-05 | Coplan Ing Gmbh | Method and equipment for executing stabilization to viscous soil having insufficient bearing capacity |
| CN103774644A (en) * | 2014-01-13 | 2014-05-07 | 东南大学 | Construction method for drainage cement mixing pile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5286209A (en) * | 1976-01-12 | 1977-07-18 | Kono Shigeru | Method of forming pile with soil coagulation |
| JPS5336910A (en) * | 1976-09-16 | 1978-04-05 | Takenaka Komuten Co | Method of forming soil pile |
-
1981
- 1981-09-22 JP JP15004381A patent/JPS5850220A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5286209A (en) * | 1976-01-12 | 1977-07-18 | Kono Shigeru | Method of forming pile with soil coagulation |
| JPS5336910A (en) * | 1976-09-16 | 1978-04-05 | Takenaka Komuten Co | Method of forming soil pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08291517A (en) * | 1995-03-14 | 1996-11-05 | Coplan Ing Gmbh | Method and equipment for executing stabilization to viscous soil having insufficient bearing capacity |
| CN103774644A (en) * | 2014-01-13 | 2014-05-07 | 东南大学 | Construction method for drainage cement mixing pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140815B2 (en) | 1986-09-11 |
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