JPH0197717A - Soil column-line construction work - Google Patents
Soil column-line construction workInfo
- Publication number
- JPH0197717A JPH0197717A JP25484487A JP25484487A JPH0197717A JP H0197717 A JPH0197717 A JP H0197717A JP 25484487 A JP25484487 A JP 25484487A JP 25484487 A JP25484487 A JP 25484487A JP H0197717 A JPH0197717 A JP H0197717A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- auger head
- cement milk
- soil column
- auger
- 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
- 239000002689 soil Substances 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims description 10
- 239000004568 cement Substances 0.000 claims abstract description 26
- 239000008267 milk Substances 0.000 claims abstract description 26
- 210000004080 milk Anatomy 0.000 claims abstract description 26
- 235000013336 milk Nutrition 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はビル等の構築物を建てかえる場合に隣設土地及
び構築物に影響を与えな′いように設ける山留め構成の
ソイル柱列工法に関するもので、土とセメントミルクの
攪拌混合を十分に行い、さらにソイル柱の拡大を図り、
止水性を高めたことを特徴とするものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a soil column construction method with a retaining structure that is installed so as not to affect adjacent land and structures when a structure such as a building is being rebuilt. Then, we thoroughly stirred and mixed the soil and cement milk, and further expanded the soil column.
It is characterized by enhanced water-stopping properties.
近接したビル等の構築物の一方を建てかえる場合、隣設
土地及び構築物に影響を与えることがないように行わな
ければならない。When reconstructing one side of adjacent buildings or other structures, it must be done in a way that does not affect the adjacent land and structures.
すなわち、特に建てかえ建物の地下構築物の除去に際し
ては隣設土地が崩れないように行わなければならない。In other words, when removing underground structures from rebuilt buildings, it must be done in such a way that the adjacent land does not collapse.
従来は除去する地下構築物の外側に矢板あるいはＨ鋼等
を連続させて打込んで仮りの山留めを構成し、該仮りの
山留めが内側に倒れることがないように斜辺梁あるいは
支保工により支持した後、その内側の地下構築物を破壊
及び除去し、その除去部分に必要とする山留めを構成し
た後、上記仮りの山留めを除去する方法が採用されてい
た。Conventionally, sheet piles, H-steel, etc. are continuously driven into the outside of the underground structure to be removed to form a temporary crest, and the temporary crest is supported by hypotenuse beams or shoring to prevent it from falling inward. The method used was to destroy and remove the underground structure inside the structure, construct the necessary ridge retainers in the area to be removed, and then remove the above-mentioned temporary ridge retainers.
上記方法においては除去する地下構築物の外側に矢板あ
るいはＨ鋼等を連続させて打込んで仮りの山留めを構成
し、それらが内側に倒れないように処置しなければなら
ず、さらにそれらはその内側の地下構築物の破壊及び除
去後に設けた必要とする山留め構成後は撤去しなければ
ならず、時間と労力を要し、極めて不経済であった。In the above method, it is necessary to continuously drive sheet piles or H-steel etc. on the outside of the underground structure to be removed to form a temporary pile, and take measures to prevent them from falling inward. After the underground structures have been destroyed and removed, the required retaining structure must be removed, which requires time and effort and is extremely uneconomical.
そこで、本件出願人は上記仮りの山留めを構成する必要
のない方法、すなわち、地上構築物除去後、地下構築物
をそのままにして該地下構築物の破壊能力を有する穿孔
機により穿孔、ソイル柱の打設及びその連結により山留
めを構成するソイル柱列工法（特願昭６１−３０５９°
３２号）を提供した。Therefore, the present applicant proposed a method that does not require the above-mentioned temporary pile retaining structure, that is, after the above-ground structure is removed, the underground structure is left as it is, and a drilling machine capable of destroying the underground structure is used to make a hole, and a soil pillar is placed. Soil column construction method (patent application 1986-3059
No. 32) was provided.
上記本件出願人が提供したソイル柱列工法は仮りの山留
めを構成する必要がなく、迅速且つ経済的であるが、土
とセメントミルクは専らケーシング内でオーガーヘッド
にて攪拌されるにすぎず、しかも、ソイル柱はケーシン
グ径以上に構成されることがなかった。The above-mentioned soil column construction method provided by the present applicant does not require the construction of a temporary pile retainer and is quick and economical, but the soil and cement milk are only stirred within the casing by an auger head. Moreover, the soil column was never configured to have a diameter larger than the casing diameter.
本発明は上記のごとき欠点を除去するもので、セメント
ミルクなオーガーヘッドの水平方向とともに、斜下方向
にも高圧噴射させ、ケーシング内外において土とセメン
トミルクの十分な攪拌を行うとともに上記斜下方向への
高圧噴射により実質的にケーシング径より大きな径のソ
イル柱の打設を可能とし、ケーシング径よりも厚い巾の
連続壁を構成することにより止水性を高めたものである
。The present invention eliminates the above-mentioned drawbacks by injecting cement milk at high pressure not only in the horizontal direction but also in the diagonal downward direction, thereby sufficiently stirring the soil and cement milk inside and outside the casing, and at the same time injecting the cement milk in the diagonal downward direction. By high-pressure injection into the soil, it is possible to cast a soil column with a diameter substantially larger than the casing diameter, and by forming a continuous wall that is thicker than the casing diameter, water-stopping properties are improved.
本発明は上記問題点を解決するため、ケーシング内にオ
ーガーヘッドスクリュ及び下端に位置するオーガーヘッ
ドを設け、該オーガーヘッドには水平方向及び斜下方向
に向けたセメントミルクの高圧噴射口を設け、上記ケー
シングとオーガーヘッドを互いに逆回転させ、さらにセ
メントミルクを高圧噴射させつつ所定深度まで穿孔し、
さらに高圧噴射を継続したまま引き抜いて必要に応じて
応力材を建込むものであり。In order to solve the above-mentioned problems, the present invention provides an auger head screw and an auger head located at the lower end in the casing, and the auger head is provided with a high-pressure injection port for cement milk directed horizontally and diagonally downward. The casing and auger head are rotated in opposite directions, and the hole is drilled to a predetermined depth while jetting cement milk at high pressure.
Furthermore, the high-pressure injection is continued while the material is pulled out and stressed material is installed as necessary.
他の実施例はオーガーヘッドを拡大オーガーヘッドとし
たものである。In another embodiment, the auger head is an enlarged auger head.
本発明ではケーシング内下端に位置するオーガーヘッド
の水平方向及び斜下方向に向けたセメントミルクの高圧
噴射口が設けられている。In the present invention, a high-pressure injection port for cement milk is provided in the horizontal direction and in the diagonally downward direction of the auger head located at the inner lower end of the casing.
そして、穿孔に際してはケーシングとオーガーヘッドが
互いに逆回転させられ、上記それぞれの高圧噴射口から
セメントミルクが高圧噴射させられる。During drilling, the casing and auger head are rotated in opposite directions, and cement milk is injected at high pressure from the respective high-pressure injection ports.
その結果、斜下方向に向けられた高圧噴射口から高圧噴
射されたセメントミルクはオーガーヘッドの回転に伴い
、ケーシング下端部においてケーシング外方に拡がる円
を描いた状態で噴射させられる。As a result, as the auger head rotates, the cement milk injected at high pressure from the high-pressure injection port directed diagonally downward is injected in a circle expanding outward from the casing at the lower end of the casing.
また、オーガーヘッドの水平方向に向けられた高圧噴射
口から高圧噴射されたセメントミルクはオーガ、＝ヘッ
ドの回転に伴い、ケーシング内部において水平回転状態
で噴射させられる。Furthermore, the cement milk is injected at high pressure from the horizontally oriented high-pressure injection port of the auger head, and is injected in a horizontally rotating state inside the casing as the auger head rotates.
すなわち１本発明によればケーシング先端部及びケーシ
ング内部における二度の高圧噴射による攪拌混合が行わ
れるものである。That is, according to one aspect of the present invention, stirring and mixing is performed by two high-pressure injections at the tip of the casing and inside the casing.
さらに、上記斜下方向へ向けられたセメントミルクの高
圧噴射はケーシング下端外方に拡がって行われるため、
実質的にケーシング径より大きな径のソイル柱が打設さ
れた状態になり、ケーシング径よりも厚い巾の連続壁が
構成され、止水性が高められるものである。Furthermore, since the high-pressure injection of cement milk directed in the diagonally downward direction is performed by spreading outward from the lower end of the casing,
A soil column with a diameter substantially larger than the casing diameter is placed, forming a continuous wall with a width thicker than the casing diameter, thereby improving water-stopping properties.
以下に本発明の一実施例を以下に説明する。 An embodiment of the present invention will be described below.
第１図にはオーガーヘッド部が示されている。The auger head section is shown in FIG.
すなわち、ケーシング（１）内にオーガーヘッドスクリ
ュ（２Ｊ及び下端に位置するオーガーヘッド（３）が設
けられて成る。That is, an auger head screw (2J) and an auger head (3) located at the lower end are provided inside the casing (1).
上記オーガーヘッド（３） ＶＣは水平方向及び斜下方
向に向けたセメントミルクの高圧噴射口（４）及び（５
）が設けられる。The auger head (3) VC is a high-pressure injection port (4) and (5) for cement milk directed horizontally and diagonally downward.
) is provided.
矛２図は他の実施例を示すオーガーヘッド部であり、オ
ーガーヘッドとして拡大オーガーへラド（３１０Ｌ）が
示されている。Figure 2 shows an auger head section showing another embodiment, and an enlarged auger head (310L) is shown as the auger head.
矛３図には上記オーガーヘッド部を使用した本発明の工
法が示されている。Figure 3 shows the construction method of the present invention using the auger head described above.
矛３図において（６）は穿孔機本体であり、上記ケーシ
ング（１）及びその内部に上記オーガーヘッドスクリュ
ー（２）及び下端にオーガーヘッド（３）が設けられて
いる。In Figure 3, (6) is the main body of the drilling machine, which includes the casing (1), the auger head screw (2) inside the casing (1), and the auger head (3) at the lower end.
なお、上記ケーシング（１）の下端及びオーガーヘッド
（３）は高張力鋼で構成し、刃先には強力耐摩耗性硬化
肉盛を施し、回転及び喰込みが良好であるように構成し
て地下構築物を破壊できるよう構成するとよい。The lower end of the casing (1) and the auger head (3) are made of high-strength steel, and the cutting edge is coated with strong wear-resistant hardfacing to ensure good rotation and biting. It is best to configure the structure so that it can be destroyed.
本発明ではまず、牙３図（α）に示すごとく、山留め構
成位置にＨ鋼からなる定規（７）が設置され。In the present invention, first, as shown in Fig. 3 (α), a ruler (7) made of H steel is installed at the position where the crest is set.
同時に上記穿孔機本体（６）を水平支持する作業地盤が
構成される。そして、ケーシング（１）が垂直設置され
る。At the same time, a working ground that horizontally supports the drilling machine main body (6) is constructed. Then, the casing (1) is installed vertically.
つぎに、オーガーヘッド（３）の水平方向に向けた高圧
噴射口（４）及び斜下方に向けた高圧噴射口（５）から
セメントミルクが高圧噴射させられ矛３図（Ａ）に示す
ごとく、所定深度まで削孔させられる。Next, cement milk is injected at high pressure from the horizontally directed high-pressure injection port (4) and diagonally downwardly directed high-pressure injection port (5) of the auger head (3), as shown in Figure 3 (A). The hole is drilled to a predetermined depth.
その際１本発明では斜下方向に向けた高圧噴射口（５）
から高圧噴射させられたセメントミルクはケーシング（
１）の下端部において、ケーシング（１）の外方に拡が
る円を描いた状態で噴射させられ、ケーシング（１）の
外側部の土中にも浸透状態となる。In this case, in the present invention, the high pressure injection port (5) directed diagonally downward
Cement milk is injected at high pressure from the casing (
At the lower end of casing (1), it is sprayed in a circle that spreads outward from casing (1), and it also penetrates into the soil outside of casing (1).
つぎに、上記セメントミルクの高圧噴射を継続したまま
矛３図（Ｃ）に示すごとく、ケーシング（１） 、オー
ガーヘッドスクリュー（２）及びオーガヘッド（３）が
引き上げられる−
その後、クレーンを使用し、あるいは必要に応じて穿孔
機本庄（６）から上記ケーシング（１）等が取り外され
、矛３図（ｄ）に示すとと（、応力材としてのＨ鋼（８
）が吊上げられ、その自重によりＨ鋼（８）の建込みが
行われる。Next, the casing (1), auger head screw (2), and auger head (3) are pulled up as shown in Figure 3 (C) while continuing the high-pressure injection of the cement milk. Alternatively, if necessary, the casing (1) etc. are removed from the Honjo drilling machine (6), and the H steel (8) as a stress material is removed as shown in Figure 3 (d).
) is lifted, and the H steel (8) is erected by its own weight.
それらは具体的には上記定木（７）を利用して設けられ
たＨ鋼（８）の建込み案内治具（９）によりガイドされ
、予め定木（７）に表示された地点にＨ鋼（８）が建込
まれる。そして、Ｈ鋼（３）が所定位置に固定させられ
、セメントミルクの固化によりソイル柱（ｌのが完成す
る。Specifically, they are guided by the H steel (8) erection guide jig (9) installed using the above-mentioned fixed tree (7), and placed at the point marked on the fixed tree (7) in advance. Steel (8) will be built. Then, the H steel (3) is fixed in place, and the soil column (1) is completed by solidification of the cement milk.
上記ソイル柱（ｌＯ）は当初適当間隔をあけて打設され
、その固化を待ってその間に順次オーバーラツプして打
設を施して連結してい゛き、矛４図示のごとき連結壁と
するものである。The above-mentioned soil pillars (lO) are initially placed at appropriate intervals, and after waiting for the soil to solidify, they are sequentially overlapping and connected by pouring, resulting in a connecting wall as shown in Figure 4. be.
なお、矛４図点線部分閃は従来のンイ／ル柱列工法にお
ける連続壁を示し、同図実線部分（７）は本発明のソイ
ル柱列工法における連続壁を示すものである。The dotted line section in Figure 4 shows the continuous wall in the conventional Ny/L column construction method, and the solid line section (7) in the same figure shows the continuous wall in the soil column construction method of the present invention.
すなわち、従来はケーシング径由であるが本発明によれ
ばそれより厚い巾に構成され、しかも二度の高圧噴射に
よる十分な攪拌混合により止水性が高められるものであ
る。That is, the width of the casing is conventionally determined by the diameter of the casing, but according to the present invention, the width is made thicker than that, and water-stopping properties are enhanced by sufficient stirring and mixing by two high-pressure injections.
また、拡大オーガーヘッドを使用すれば、上記連続壁厚
をさらに厚くすることができるものである。Moreover, if an enlarged auger head is used, the continuous wall thickness can be further increased.
本発明によれば、土とセメントミルクの攪拌混合が十分
に行われ、しかもソイル柱の拡大を図ることができ、止
水性を高めたソイル柱列を提供できるものである。According to the present invention, it is possible to sufficiently stir and mix soil and cement milk, and also to expand the soil column, thereby providing a row of soil columns with improved water-stopping properties.
図面は本発明の一実施例を示すもので、第１図はオーガ
ーヘッド部の縦断面図、矛２図は他の実施例を示すオー
ガーヘッド部の縦断面図。
、１−３図（α）乃至（ｄ）は本発明の工程図、矛４図
はソイル柱打設状態を示す比較図である。
（１）・・・ケーシング、（２）・・・オーガーヘッド
スクリュ、（３）・・・オーガーヘッド、（４）（５）
・・・セメントミルク高圧噴射口。The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of an auger head portion, and FIG. 2 is a longitudinal cross-sectional view of an auger head portion showing another embodiment. , 1-3 (α) to (d) are process diagrams of the present invention, and Figure 4 is a comparative diagram showing the state of soil column casting. (1)...Casing, (2)...Auger head screw, (3)...Auger head, (4) (5)
...Cement milk high pressure injection port.
Claims (2)
に位置するオーガーヘツドを設け、該オーガーヘツドに
は水平方向及び斜下方向に向けたセメントミルク高圧噴
射口を設け、上記ケーシングとオーガーヘツドを互いに
逆回転させ、さらにセメントミルクを高圧噴射させつつ
所定深度まで穿孔し、さらにセメントミルクの高圧噴射
を継続したまま引き抜いて必要に応じて応力材を建込む
ことを特徴とするソイル柱列工法。(1) An auger head screw and an auger head located at the lower end are provided in the casing, and the auger head is provided with a cement milk high-pressure injection port directed horizontally and diagonally downward, and the casing and auger head are reversed with respect to each other. The soil column construction method is characterized by drilling a hole to a predetermined depth while rotating and spraying cement milk at high pressure, and then pulling it out while continuing to spray cement milk at high pressure and erecting stress material as necessary.
を特徴とする特許請求の範囲第１項記載のソイル柱列工
法。(2) The soil column construction method according to claim 1, wherein the auger head is an enlarged auger head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62254844A JPH0788658B2 (en) | 1987-10-09 | 1987-10-09 | Soil column construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62254844A JPH0788658B2 (en) | 1987-10-09 | 1987-10-09 | Soil column construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0197717A true JPH0197717A (en) | 1989-04-17 |
| JPH0788658B2 JPH0788658B2 (en) | 1995-09-27 |
Family
ID=17270635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62254844A Expired - Fee Related JPH0788658B2 (en) | 1987-10-09 | 1987-10-09 | Soil column construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0788658B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5127765A (en) * | 1991-07-25 | 1992-07-07 | Millgard Environmental Corporation | System for in-situ treatment of underwater contaminated material |
| KR20030087288A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 세원지오신테크 | Executon method of wall for intercepting contamination zone of using steel sheet pile |
| JP2008297752A (en) * | 2007-05-30 | 2008-12-11 | Taisei Corp | Pile burying method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS525167A (en) * | 1975-06-27 | 1977-01-14 | Brother Ind Ltd | Self running conveyor |
| JPS577247A (en) * | 1980-06-17 | 1982-01-14 | Mitsui Toatsu Chem Inc | Jet layer type granulator |
| JPS60141921A (en) * | 1983-12-27 | 1985-07-27 | Takenaka Komuten Co Ltd | Landslide protection wall |
-
1987
- 1987-10-09 JP JP62254844A patent/JPH0788658B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS525167A (en) * | 1975-06-27 | 1977-01-14 | Brother Ind Ltd | Self running conveyor |
| JPS577247A (en) * | 1980-06-17 | 1982-01-14 | Mitsui Toatsu Chem Inc | Jet layer type granulator |
| JPS60141921A (en) * | 1983-12-27 | 1985-07-27 | Takenaka Komuten Co Ltd | Landslide protection wall |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5127765A (en) * | 1991-07-25 | 1992-07-07 | Millgard Environmental Corporation | System for in-situ treatment of underwater contaminated material |
| WO1993001899A1 (en) * | 1991-07-25 | 1993-02-04 | Millgard Environmental Corporation | System for in-situ treatment of underwater contaminated material |
| KR20030087288A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 세원지오신테크 | Executon method of wall for intercepting contamination zone of using steel sheet pile |
| JP2008297752A (en) * | 2007-05-30 | 2008-12-11 | Taisei Corp | Pile burying method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0788658B2 (en) | 1995-09-27 |
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