JPS5847527B2 - Anti-forming method using soil condensation - Google Patents
Anti-forming method using soil condensationInfo
- Publication number
- JPS5847527B2 JPS5847527B2 JP51002641A JP264176A JPS5847527B2 JP S5847527 B2 JPS5847527 B2 JP S5847527B2 JP 51002641 A JP51002641 A JP 51002641A JP 264176 A JP264176 A JP 264176A JP S5847527 B2 JPS5847527 B2 JP S5847527B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- mixer
- pile
- mortar
- casing tube
- 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.)
- Expired
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】
本発明は、従来の場所打ち杭工法に替り得る土壌凝結に
よる杭成形工法、更に詳しくは、掘穿した土壌を土壌硬
化剤モルタルと混合して掘穿部に逆送埋設して地中に杭
を形成する工法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a pile forming method using soil condensation that can replace the conventional cast-in-place pile method, and more specifically, a method in which excavated soil is mixed with a soil hardening agent mortar and transported back to the excavated part. It relates to a method of burying and forming piles in the ground.
従来より各種の場所打ち杭工法が開発されており、その
中には土壌の掘穿にアースオーガを用いるものもあるが
、それらは、何れもケーシングチューブを使用せず、ア
ースオーガは掘穿土の全部あるいは二部を取り除くか、
又は掘穿孔内を攪乱し、普通のボルトランドセメントの
ミルク、又はプレパクトモルタルを射出する所謂注入工
法による置換方式の工法である。Various cast-in-place pile construction methods have been developed, and some of them use an earth auger to excavate the soil, but none of them use a casing tube, and the earth auger does not use a casing tube to excavate the soil. remove all or two parts of
Alternatively, there is a replacement method using the so-called injection method, in which the inside of the excavation hole is disturbed and ordinary Boltland cement milk or prepact mortar is injected.
そして、これらの工法によって成形された杭は、その対
象とする土壌に限界があり、さらに杭径の不整は避けら
れず、最も利用度の多い柱列式の地中笠の施工に訃いて
は、杭と杭の間に間隙を生ずる、という結果を露呈し、
又現状土とセメントミルクの混合精度の低F、あるいは
有機質を含有する粘質土壌の凝結硬化の不確実等の欠点
が挙げられる。Piles formed using these construction methods have limitations on the soil they can be used on, and irregularities in the pile diameter are unavoidable, making it difficult to construct the columnar type underground shade, which is the most commonly used method. , the result was that a gap was created between the piles,
Other disadvantages include low mixing accuracy of soil and cement milk, and uncertainty in coagulation and hardening of clayey soil containing organic matter.
本発明の叙上の諸点(lc鑑み、従来工法における前記
問題的を解消する、場所打ち杭J法を提供することを目
的としてなされたもので、斯る目的を、外径が成形しよ
うとする杭の太さに等しいケーシンクチューブを有し該
ケーシングチューブのF端部周側に補助枠を嵌合させて
あり且つ上部にミキサーを連設したアースオーガを用い
、杭を戒形しようとする位置の現状士をヒ記杭の形状に
対応させて掘穿して七記ミキサー内に収容した後、ヒ記
現状士を七記ミキサー内で土壌硬化剤モルタルと混合し
て梶合士となし、然る後ヒ記ミキサー内のヒ記混合土を
そのまま上記現状土の掘穿部に圧送埋設することを特徴
とする土壌凝結による杭成形工法により達成したもので
ある。In view of the above-mentioned points (LC), the present invention has been made for the purpose of providing a cast-in-place pile J method that solves the problems mentioned above in conventional construction methods. Attempt to shape the pile using an earth auger that has a casing tube equal to the thickness of the pile, has an auxiliary frame fitted around the F end of the casing tube, and has a mixer connected to the top. After excavating the existing material at the location in accordance with the shape of the pile described in 1 and storing it in the mixer described in 7, the present material described in 1 is mixed with soil hardening agent mortar in the mixer described in 7 and used as a slag. This was achieved by a pile forming method using soil condensation, which is characterized in that the mixed soil described in "H" in the mixer described in "H" is then pumped and buried as it is in the excavated portion of the existing soil.
以F、上記特徴を以てなる本発明工法の実施態様を、本
発明の実施に用いられる装置例と共に図面を参照し乍ら
説明する。Hereinafter, embodiments of the construction method of the present invention having the above-mentioned features will be described with reference to the drawings together with examples of equipment used to implement the present invention.
先ず、第1及び第2図に示す装置例について説明すると
、1はケーシングチューブ2を有するアースオーガ、3
はケーシングチューブ2の上部に連設したミキサーで、
両者の回転軸8ぱ連続しており、これらはモーター4(
/cよりプーリー5、ベルト6、プーリー7を介して駆
動される。First, the example of the device shown in FIGS. 1 and 2 will be explained. 1 is an earth auger having a casing tube 2;
is a mixer connected to the top of casing tube 2,
The rotating shafts 8 of both are continuous, and these are connected to the motor 4 (
/c via pulley 5, belt 6, and pulley 7.
捷た10は、ミキサー3の側壁の一部より該ミキサー3
内に連通ずる土壌硬化剤モルタル圧送パイプ接続部、1
1はミキサー3の一部に設けた振動装置で、モーター1
2Kよって駆動される。The shredded 10 is attached to the mixer 3 from a part of the side wall of the mixer 3.
soil hardening agent mortar pressure pipe connection communicating with the inside; 1
1 is a vibration device installed in a part of mixer 3, and motor 1
Driven by 2K.
尚、上記回転軸8を中空となしその一部に噴出孔13を
設けてかくことにより、圧送パイプを上記圧送パイプ接
続部10に接続する代わりにこれに圧送パイプ10′を
接続することもできる。Incidentally, by making the rotating shaft 8 hollow and providing a jet hole 13 in a part thereof, it is also possible to connect the pressure pipe 10' to this instead of connecting the pressure pipe to the pressure pipe connection section 10. .
!た、アースオーガ1のケーシングチューブ2の下端部
周側には、該チューブ2を延長する方向に摺動自在な補
助枠14を嵌合させてある。! In addition, an auxiliary frame 14 is fitted around the lower end of the casing tube 2 of the earth auger 1 and is slidable in the direction in which the tube 2 is extended.
次に、上記装置20を用いての本発明の実施態様につい
て説明すると、第4図に示す如く、′先ず装置20をク
レーン等により吊りrげ、所定の位置に設定する。Next, an embodiment of the present invention using the above device 20 will be described. As shown in FIG. 4, first, the device 20 is lifted by a crane or the like and set at a predetermined position.
この位置は土工定規又は、施工遺形によって規定された
位置とし、クレーン21による吊り■げの場合は、人力
によって設定されるが、油圧式掘削機のアーム先端に取
付けられた場合、或いはブルドーザーの排土板の部分に
架装された場合等は、自動的に設定することが出来る。This position is defined by the earthwork ruler or the construction remains, and when it is lifted by the crane 21, it is set manually, but when it is attached to the end of the arm of a hydraulic excavator, or when it is set by a bulldozer. It can be set automatically when the structure is mounted on the earth removal plate.
また、装置20と共に用意されたモルタルポンプ22に
接続されているモルタル圧送パイプ23を七記パイプ接
続部10に接続し、且つ用いる土壌硬化剤モルタルを調
合して置く。In addition, the mortar pumping pipe 23 connected to the mortar pump 22 prepared with the device 20 is connected to the pipe connection section 10 described in Section 7, and the soil hardening agent mortar to be used is mixed and placed.
この土壌硬化剤モルタルの調合は、現状土の性状、状態
及び成形しようとする杭の形状等によって必ずしも特定
されないが、好1しいモルタルとしては、例えば、リグ
ニンスルホ/酸を主体として混和剤約3係(重量)とボ
ルトランドセメント約97係(重量)との混合物1重量
部に、砂約1〜約3重量部及び水約0.3〜約0.8重
量部を加えて練り混ぜたものを挙げることができ、更に
モルタルと現状土を混合する際に必要に応じこれに粒径
5閣〜10mmの砕石を適量混入することもできる。The formulation of this soil hardening agent mortar is not necessarily specified depending on the current properties and condition of the soil, the shape of the pile to be formed, etc., but a preferred mortar is, for example, mainly composed of lignin sulfo/acid and about 30% admixture. About 1 to 3 parts by weight of sand and about 0.3 to 0.8 parts by weight of water are added to 1 part by weight of a mixture of about 97 parts by weight of Bortland cement and about 97 parts by weight of Bortland cement. Further, when mixing the mortar and the existing soil, an appropriate amount of crushed stone having a grain size of 5 mm to 10 mm may be mixed therein, if necessary.
上記の如く、装置等の設定終了後、本発明の工法は、f
記の工程に従って実施される。As mentioned above, after setting the equipment etc., the construction method of the present invention
It is carried out according to the steps described below.
第一工程(第3図イ参照) アースオーガ1を駆動させ現状土を掘穿する。First step (see Figure 3 A) Drive earth auger 1 to excavate the current soil.
この工程においては、現状土はアースオーガ1のケーシ
ングチューブ2に応じた形状に掘穿され、掘穿された現
状土はミキサー3内に収容される。In this step, the existing soil is excavated into a shape corresponding to the casing tube 2 of the earth auger 1, and the excavated existing soil is accommodated in the mixer 3.
第二工程(第3図口参照)
ミキサー3内に土壌硬化剤モルタルを圧送し、ミキサー
3内にて現状土と混合し混合土を造る。Second step (see Figure 3) A soil hardening agent mortar is pumped into the mixer 3 and mixed with the existing soil to create a mixed soil.
同、この工程は第一工程と同時渣たは第一工程の途中で
開始しても良い。Similarly, this step may be started simultaneously with the first step or during the first step.
第三工程(第3図ハ,二,ホ参照)
第二工程終了後、回転軸8を逆回転させ且つ振動装置1
1を駆動させて縦軸方向の振動を与え、上記混合土を順
次締め固め乍ら上記ケーシングチューブ2内に逆送し、
同時に装置20を吊り上げて行く。Third step (see Figure 3 C, 2, E) After the second step, the rotating shaft 8 is reversely rotated, and the vibration device 1
1 to apply vibration in the vertical axis direction, and the mixed soil is sequentially compacted and transported back into the casing tube 2,
At the same time, the device 20 is lifted up.
この際、補助枠14が摺動してチューブ2の延長方向に
位置するため、掘穿部の■端部における混合土の掘穿部
外への浸入乃至はみ出しが防止される。At this time, since the auxiliary frame 14 slides and is positioned in the extending direction of the tube 2, the mixed soil at the (2) end of the excavation part is prevented from infiltrating or protruding out of the excavation part.
この操作により混合士は、現状土の掘穿部に充填され凝
結して所望の土壌杭30となる。Through this operation, the mixer is filled into the excavated portion of the existing soil and solidified to form the desired soil pile 30.
本発明の工法は、上記第一〜第三工程を経ることを基本
とするものであるが、柱列式に杭を形成することにより
、側溝等の形或及び建築現場における土壌崩れ防止壁等
を形成することができる等その利用範囲は極めて広〈、
これらの本発明の効果を列記すると次の通りである。The construction method of the present invention is based on the above-mentioned first to third steps, but by forming piles in a row of columns, it can be used to improve the shape of side gutters, etc., and walls to prevent soil collapse at construction sites. Its range of use is extremely wide, as it can form
The effects of the present invention are listed below.
■ケーシングチューブを使用するために必要に応じた柱
径の杭が確実に得られ、この際補助枠が摺動してケーシ
/グチューブの延長方向に位置するため、掘穿部の下端
部における混合土の掘穿部外への浸入乃至はみ出しが防
止される。■In order to use the casing tube, it is possible to reliably obtain piles with the required column diameter, and at this time, the auxiliary frame slides and is positioned in the direction of extension of the casing/tube, allowing for mixing at the lower end of the excavated part. Soil is prevented from entering or protruding outside the excavation area.
■ミキサ一部が連設されているため掘穿土とモルタルの
混合が充分に行われる。■Since some of the mixers are connected, the excavated soil and mortar are thoroughly mixed.
■ケーシ/グチューブを用いることにより軟弱地質から
砂質土なで広範囲の土壌に応用出来る。■By using a case/gutube, it can be applied to a wide range of soils, from soft to sandy soils.
■土壌硬化剤のモルタルによって有機質を含有する粘質
土についても凝結効果させることが出来る。■Soil hardening agent mortar can also have a hardening effect on clay soil containing organic matter.
■柱列式の地中杭についても杭の間隔を正確に保持する
ことが出来る。■It is possible to accurately maintain the spacing between pillar-type underground piles.
■現状土を利用することにより使用材料の現物搬入が大
巾に節減される。■By using the existing soil, the need to bring in the actual materials to be used can be greatly reduced.
■土壌嫉化剤の特性が活用される。■The properties of soil fertilizers are utilized.
a細粘土に対して接着効果を発揮する。Exhibits an adhesive effect on fine clay.
b特別の養生を必要としない。b. Does not require special curing.
C収縮、亀裂の発生が少ない。C: Less shrinkage and cracking.
d強度の増加が長期にわたって現われる。d An increase in intensity appears over a long period of time.
e土粒子の滑動が促進さ.,aるため、小さな締め固め
力によって大きな密度が得られる。e The sliding of soil particles is promoted. , a, a large density can be obtained with a small compaction force.
f凝結の始発性が遅く、終結までの時間が短いため作業
性が大きい。f Condensation starts slowly and takes a short time to complete, so it is highly workable.
■アースオーガの逆転による圧入効果と振動機による振
動効果の相乗作用により密度の高い場所打ち杭が得られ
る。■A high-density cast-in-place pile can be obtained by the synergistic effect of the press-fitting effect caused by reversing the earth auger and the vibration effect caused by the vibrator.
■必要に応じた角度(俯角)の杭も自由に施工出来るた
め、その用途及び応用範囲が非常に広い。■Since piles can be constructed at any angle (depression angle) as required, the range of uses and applications is extremely wide.
[相]埋設直後には杭の中に容易に鉄筋を挿入すること
が出来るので、ある程度の曲げ応力にも対応することが
出来る。[Phase] Since reinforcing bars can be easily inserted into the pile immediately after burial, it is possible to cope with a certain degree of bending stress.
第1図は、本発明工法の実施に用いられる一装置例を示
す切欠側面図、第2図ぽその平面図、第3図イ〜ホは本
発明工法の工程順序を示す概略図、第4図は本発明工法
の実施態様の一部を示す概略図である。
20・・・・−・装置、21・・・・・・クレーン、2
2・・・・・・モルタルポンプ、23・・・・・・パイ
プ(ホース)、30・・・・・・L 1・・・・・・
アースオーガ、2・川・・ケーシングチューフ、3・・
・・・・ミキサー 4,12・・・・・・モータ、8・
・・・・・回転軸、11・・・・・・振動装置、14・
・・・・・補助枠。Fig. 1 is a cutaway side view showing an example of an apparatus used in carrying out the method of the present invention, Fig. 2 is a plan view of the point, Fig. 3 A to H are schematic diagrams showing the process order of the method of the present invention, and Fig. 4 The figure is a schematic diagram showing a part of an embodiment of the construction method of the present invention. 20... Equipment, 21... Crane, 2
2...Mortar pump, 23...Pipe (hose), 30...L 1...
Earth auger, 2, river...casing chew, 3...
...Mixer 4,12...Motor, 8.
... Rotating shaft, 11 ... Vibration device, 14.
...Auxiliary frame.
Claims (1)
グチューブを有し該ケーシ/グチューブのF端部周側に
補助枠を嵌合させてあり且つ上部にミキサーを連設した
アースオーガを用い、杭を成形しようとする位置の現状
土を上記杭の形状に対応させて掘穿して上記ミキサー6
K収容した後、七記現状土を丘記ミキサー内で土壌嫉化
剤モルタルと混合して混合土となし、然る後上記ミキサ
ー内の上記脛合土をそのit上記現状士の掘穿部に圧送
埋設することを特徴とする土壌凝結による杭成形工法。1. Using an earth auger that has a casing tube whose outer diameter is equal to the thickness of the pile to be formed, has an auxiliary frame fitted around the F end of the casing tube, and has a mixer connected to the top. , the existing soil at the position where the pile is to be formed is excavated in a manner corresponding to the shape of the pile, and the mixer 6
After collecting the soil, mix the soil in the mixer with mortar to make a mixed soil, and then mix the soil in the mixer into the excavation section of the soil mixer. A pile forming method that uses soil condensation and is characterized by being forced and buried in the soil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51002641A JPS5847527B2 (en) | 1976-01-12 | 1976-01-12 | Anti-forming method using soil condensation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51002641A JPS5847527B2 (en) | 1976-01-12 | 1976-01-12 | Anti-forming method using soil condensation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5286209A JPS5286209A (en) | 1977-07-18 |
JPS5847527B2 true JPS5847527B2 (en) | 1983-10-22 |
Family
ID=11534988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51002641A Expired JPS5847527B2 (en) | 1976-01-12 | 1976-01-12 | Anti-forming method using soil condensation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5847527B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04159149A (en) * | 1990-10-22 | 1992-06-02 | Stanley Electric Co Ltd | Lighting fixture disconnection detecting method |
JPH04159150A (en) * | 1990-10-22 | 1992-06-02 | Stanley Electric Co Ltd | Lighting fixture disconnection detecting method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5850220A (en) * | 1981-09-22 | 1983-03-24 | Asuku Kenkyusho:Kk | Construction of pile in ground |
JPS61158522A (en) * | 1984-12-29 | 1986-07-18 | Daido Concrete Kogyo Kk | Method and device of constructing pile |
JPH01190818A (en) * | 1988-01-25 | 1989-07-31 | Shinsei Kiso Kogyo Kk | Columnar improved body for ground and construction method and construction device thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239916A (en) * | 1975-09-25 | 1977-03-28 | Kazuhiko Kishigami | Apparatus for forming pile with solidification of soil |
-
1976
- 1976-01-12 JP JP51002641A patent/JPS5847527B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239916A (en) * | 1975-09-25 | 1977-03-28 | Kazuhiko Kishigami | Apparatus for forming pile with solidification of soil |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04159149A (en) * | 1990-10-22 | 1992-06-02 | Stanley Electric Co Ltd | Lighting fixture disconnection detecting method |
JPH04159150A (en) * | 1990-10-22 | 1992-06-02 | Stanley Electric Co Ltd | Lighting fixture disconnection detecting method |
Also Published As
Publication number | Publication date |
---|---|
JPS5286209A (en) | 1977-07-18 |
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