JPS6051220A - Improvement work of ground - Google Patents
Improvement work of groundInfo
- Publication number
- JPS6051220A JPS6051220A JP15812783A JP15812783A JPS6051220A JP S6051220 A JPS6051220 A JP S6051220A JP 15812783 A JP15812783 A JP 15812783A JP 15812783 A JP15812783 A JP 15812783A JP S6051220 A JPS6051220 A JP S6051220A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- earth auger
- cement
- hole
- ground
- 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.)
- Pending
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
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は軟弱地盤地帯トに家屋等を建設する際に予めソ
イルセメント柱体を作り、地盤を強化させる地盤改良の
施工方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a construction method for ground improvement in which soil cement columns are prepared in advance to strengthen the ground when constructing a house or the like in a soft ground area.
（従来の技術）
従来、軟弱地盤上に建築物を建設する場合、人形の構築
物の場合にはコンクリ−１・杭を堅い地盤まで打込む等
の工法が採らねているが、こｉｔには莫大な経費が必要
で一般の住宅用としては適さない。このほかに一般住宅
用の地盤強化法として土中にセメントミルクを注入し、
土と混合し−Ｃソイルコンクリートとして地盤を強化す
ることも行なわれている。(Conventional technology) Conventionally, when constructing a building on soft ground, methods such as driving concrete piles and piles into hard ground have not been adopted in the case of doll structures, but this method It requires a huge amount of money and is not suitable for general residential use. In addition, cement milk is injected into the soil as a ground strengthening method for general housing.
It is also used to strengthen the ground by mixing it with soil to form -C soil concrete.
しかしながら、この方法では土質部が粘性土の場合、掘
削した土に塊りが発生してセメントミルりとうまく混り
合わず、十分に均質なノイルセメント柱体は形成出来な
いという欠点がある。However, this method has the disadvantage that when the soil is clayey, lumps occur in the excavated soil and it does not mix well with the cement mill, making it impossible to form a sufficiently homogeneous noil cement column.
（発明の目的）
本発明は上記のような欠点を解決するたｄ）に、軟弱地
盤をアースオーガーで掘削し、その、１−− フｆ−先
端部よりセメントミルクを噴射させ、メ・−ツノ゛−を
回転させながらセメントミルりと土とを攪拌させてフィ
ルセメント柱体を作る際に、オーツノ゛−の中心軸に取
付けたバイブレータの振動により土塊をほぐすことによ
り均質なソイルセメントが得られるようにするものであ
る。(Objective of the Invention) In order to solve the above-mentioned drawbacks, the present invention aims to (d) excavate soft ground with an earth auger, inject cement milk from the tip of the earth auger, and When making fill cement columns by stirring the cement mill and soil while rotating the horn, homogeneous soil cement is obtained by loosening the soil clods by the vibration of the vibrator attached to the central axis of the horn. It is intended to enable
（発明の構成および作用）
第１図は本発明の地盤改良の施工方法を説明するたｄ）
の第１の実施例の構成を示す垂直断面図である。(Structure and operation of the invention) Figure 1 is for explaining the soil improvement construction method of the present invention.d)
FIG. 2 is a vertical cross-sectional view showing the configuration of the first embodiment.
これは、土質部１をアースオーガー２の中心軸の周囲に
形成したスクリュー刃３の先端掘削羽根４により掘削し
てフィル七メント柱体形成用の穴部５を形成し、その穴
部５内にセメントミルク６を注入させながら内部の土と
混ぜて攪拌する際に、アースオーガー２の中ノし・軸に
装着したバイブレータ（図示せず。）によりアースオー
ガー自体に矢印７で示すように振動を加え、土塊をほぐ
しながらセメントミルク６と土を攪拌し、メイルセメン
ト柱体を形成するものである。This is done by excavating a soil area 1 with a tip excavating blade 4 of a screw blade 3 formed around the central axis of an earth auger 2 to form a hole 5 for forming a fill column. When the cement milk 6 is injected into the earth auger 2 to mix it with the soil inside, a vibrator (not shown) attached to the shaft of the earth auger 2 causes the earth auger itself to vibrate as shown by the arrow 7. is added, and the cement milk 6 and the soil are stirred while loosening the soil clods to form a mail cement column.
第２図は本発明の第２の実施例の構成を示す垂直断面図
である。FIG. 2 is a vertical sectional view showing the structure of a second embodiment of the present invention.
図中、１〜５は第１図に示したものと同一部分を示す。In the figure, 1 to 5 indicate the same parts as shown in FIG.
実施例の特徴はコンクリ−１・の振動締固めに使用する
棒状パイブレーク８を、アースオーガー２の中心軸を通
して、そのアースオーガー２の先端部の先端掘削羽根４
より突出させ、アースオーツノー２がフィルセメント形
成用穴部５内で流入されたセメントミルクと土を攪拌す
る際に、これと同時に棒状バイブレータ８により土の塊
りを崩し、均一なノイルセメント柱体を作りあげ、これ
を、これから建物を建設しようとする軟弱地盤上の所望
の位置に形成することにより地盤改良を行なうものであ
る。The feature of this embodiment is that a rod-shaped pie break 8 used for vibration compaction of concrete 1 is passed through the central axis of the earth auger 2, and the tip excavation blade 4 at the tip of the earth auger 2 is inserted into the center shaft of the earth auger 2.
When the earth oat no 2 stirs the cement milk and soil that have flowed into the fill cement forming hole 5, the rod-shaped vibrator 8 breaks up the soil lumps and forms a uniform column of noil cement. This method improves the ground by building a structure and placing it in a desired position on the soft ground on which a building is to be constructed.
第３図は本発明の施工方法を説明するだめの作業工程図
の一例であり、■〜■は掘削工程、■〜■はセメントミ
ルク注入工程、■〜■は混合攪拌工程を示している。こ
こでは、／゛イブレータハ混合攪拌工程で使用するが図
示は省略した。FIG. 3 is an example of a work process diagram for explaining the construction method of the present invention, in which 1 to 2 show the excavation process, 2 to 2 the cement milk injection process, and 2 to 3 the mixing and stirring process. Here, the /ibrator is used in the mixing and stirring step, but is not shown.
次にその作業順序を説明する。Next, the work order will be explained.
■ アースオーガー２を杭心に七ノトシ掘削開始、 ■
掘削中、 ■ 掘削完了、七メントミルク注入開始、
■ 七メントミルク注入中、■ セメントミノにり注
入完了、土とセメントミルクの混合攪拌開始、 ■ 土
とセメントミルクの混合攪拌中、 ■ 所要杭長まで混
合攪拌（第１回）完了、 ■ 所要杭長より引」二げに
よる混合攪拌（第２回）中、 ■ 混合攪拌完了。杭の
成柱完了。■ Seven holes of excavation started using Earth Auger 2 as the center of the pile, ■
During excavation, ■ Excavation completed, seven-ment milk injection started,
■ Seven mento milk is being poured, ■ Cement mino paste is poured, mixing and stirring of soil and cement milk starts, ■ Mixing and stirring of soil and cement milk is in progress, ■ Mixing and stirring (first time) is completed to the required pile length, ■ Required During mixing and agitation (second time) using a double bar pulled from the pile length, ■ Mixing and agitation is completed. Pile formation completed.
（発明の効果）
以」二説明したように、本発明によればセメントミルク
と土を混合する際に、土塊をパイプレークにより細かく
均質にほぐすことが容易であるため、極めて粒子の揃っ
たソイルセメントを得ることができ、特性の良好なソイ
ルセメント柱体による安定な地盤改良を軟弱地盤地帯上
に安価に形成することが出来る利点がある。(Effects of the Invention) As explained below, according to the present invention, when mixing cement milk and soil, it is easy to loosen the soil clod into fine and homogeneous particles using pipe raking, so that soil with extremely uniform particles can be obtained. It has the advantage that cement can be obtained and that stable ground improvement using soil cement columns with good properties can be formed at a low cost on soft ground areas.
第１図は本発明の地盤改良の施工方法を説明するだめの
第１の実施例の構成を示す垂直断面図、第２図は本発明
の第２の実施例の構成を示す垂直断面図、第３図は本発
明による作業工程の一例を示す図である。
■・・・・・・・・土質部、 ２・・・・・・・アース
オーガー、３・・・・・・・・ スクリュー刃、 ４
・・・・・先端掘削羽根、 ５・・・・・・・・・ソイ
ルセメント柱体形成用の穴部、 ６ ・・・・・・・・
・セメントミルク、 ７ ・・・・・パイブレークによ
るアースオーガー自体の振動、８ ・・・・・・棒状バ
イブレータ。
特許出願人 二ソケンキソ コンザルタ／ト株式会社第
１図
第２図FIG. 1 is a vertical sectional view showing the configuration of a first embodiment of the present invention for explaining the soil improvement construction method, and FIG. 2 is a vertical sectional view showing the configuration of the second embodiment of the present invention. FIG. 3 is a diagram showing an example of the working process according to the present invention. ■・・・・・・Soil part, 2・・・・Earth auger, 3・・・・Screw blade, 4
・・・・・・Tip excavation blade, 5・・・・・・・・・Hole part for forming soil cement column, 6 ・・・・・・・・・・・・
・Cement milk, 7... Vibration of the earth auger itself due to pie break, 8... Rod-shaped vibrator. Patent applicant Niso Kenkiso Consulta/To Co., Ltd. Figure 1 Figure 2
Claims (2)
スクリュー刃を有し、中心軸先端部に先端掘削羽根を有
すると共に、その中空の中心軸に装着されたパイブレー
クと、セメントミルク注入口を備えたアースオーガーを
用い、土質よりなる軟弱地盤に対して、前記アースオー
カーにより掘削を行って所望の深度の穴部を形成し、そ
の穴部にセメントミルクを注入すると共に土を供給して
これをアースオーガにより攪拌する際に、前記のバイブ
レータにより土塊をほぐしつつ攪拌してソイルセメント
を形成する工程を穴の底部から」二部捷で逐次アースオ
ーガを引き上げつつ行うことにより前記掘削した穴部内
にメイルセメント柱体を形成し、これを前記軟弱地盤を
有する所要の個所にそれぞれ繰返し行うことを特徴とす
る地盤改良の施工方法。(1) A hollow cylindrical body with a screw blade along the outer periphery of the center, a tip drilling blade at the tip of the center shaft, a pie break attached to the hollow center shaft, and a cement milk inlet. Using an earth auger equipped with an earth auger, excavate the soft ground made of soil with the earth auger to form a hole of a desired depth, and inject cement milk into the hole and supply soil. When stirring this with the earth auger, the process of loosening and stirring the soil clods with the vibrator to form soil cement is carried out from the bottom of the hole while sequentially pulling up the earth auger with a two-part swivel. 1. A construction method for ground improvement, characterized by forming a mail cement column within the section and repeatedly applying this to each of the required locations having the soft ground.
内に上下に摺動可能に浪人装着された棒状体であり、ア
ースオーガーが土と七メツｔミルクを攪拌する際に中心
軸の先端部よりＦ部に突出し、て振動することができる
ものであることを特徴とする特許請求の範囲第（１）項
記載の地盤改良の施１’方法。(2) The pie break is a rod-shaped body that is installed in the hollow central shaft of the earth auger so that it can slide up and down. The ground improvement method 1' according to claim (1), characterized in that the device protrudes from the F section and can vibrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15812783A JPS6051220A (en) | 1983-08-31 | 1983-08-31 | Improvement work of ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15812783A JPS6051220A (en) | 1983-08-31 | 1983-08-31 | Improvement work of ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6051220A true JPS6051220A (en) | 1985-03-22 |
Family
ID=15664875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15812783A Pending JPS6051220A (en) | 1983-08-31 | 1983-08-31 | Improvement work of ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051220A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220714A (en) * | 1988-07-06 | 1990-01-24 | Doboku Kenkyu Center | Ground improving execution |
| JPH04138427U (en) * | 1991-06-10 | 1992-12-25 | 不動建設株式会社 | Ground agitation mixing treatment equipment |
| JP2011140761A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment, and soil improvement method |
| JP2011140762A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment, and soil improvement method |
| JP2011140760A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131709A (en) * | 1980-03-18 | 1981-10-15 | Nakatomi Kurimoto | Improving apparatus for soft ground |
-
1983
- 1983-08-31 JP JP15812783A patent/JPS6051220A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131709A (en) * | 1980-03-18 | 1981-10-15 | Nakatomi Kurimoto | Improving apparatus for soft ground |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220714A (en) * | 1988-07-06 | 1990-01-24 | Doboku Kenkyu Center | Ground improving execution |
| JPH04138427U (en) * | 1991-06-10 | 1992-12-25 | 不動建設株式会社 | Ground agitation mixing treatment equipment |
| JP2011140761A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment, and soil improvement method |
| JP2011140762A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment, and soil improvement method |
| JP2011140760A (en) * | 2010-01-05 | 2011-07-21 | Ohbayashi Corp | Drilling and agitating equipment |
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