JPH06116947A - Soil cement pile with bar steel as core - Google Patents
Soil cement pile with bar steel as coreInfo
- Publication number
- JPH06116947A JPH06116947A JP27295892A JP27295892A JPH06116947A JP H06116947 A JPH06116947 A JP H06116947A JP 27295892 A JP27295892 A JP 27295892A JP 27295892 A JP27295892 A JP 27295892A JP H06116947 A JPH06116947 A JP H06116947A
- Authority
- JP
- Japan
- Prior art keywords
- soil cement
- bar
- cement
- soil
- steel
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は条鋼を芯材とした形式の
ソイルセメント杭に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil cement pile of a type using a steel bar as a core material.
【０００２】[0002]
【従来の技術】従来、仮土留壁及び仮土留杭等の仮設的
な杭として条鋼を芯材としたソイルセメント杭が用いら
れている。ソイルセメントは、対象土にセメントを混合
してセメントの水硬性により接着力を増し、剛性の処理
土としたものであり、ソイルセメント杭は、地盤を掘削
したときの原位置土にセメントミルクを流しこみ、条鋼
を芯材としてたて込むようにしたものである。2. Description of the Related Art Conventionally, soil cement piles having a core of strip steel have been used as temporary piles such as temporary earth retaining walls and temporary earth retaining piles. Soil cement is a rigid treated soil that mixes cement with the target soil to increase the adhesive strength due to the hydraulic property of the cement, and soil cement piles use cement milk in the in-situ soil when excavating the ground. It is made by pouring and using steel bar as a core material.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、実際に
はソイルセメントと条鋼の付着力は小さく、材料分離等
により剥離して一体的に作用しないため、本設基礎杭と
しては施工されず、仮土留壁及び仮土留杭等の仮設的な
杭として用いられているのが実情である。However, since the adhesive force between the soil cement and the steel strip is small in practice and they do not act as a single unit by peeling off due to material separation, etc. The actual situation is that they are used as temporary piles such as walls and temporary retaining piles.
【０００４】本発明は上記課題を解決するためのもの
で、ソイルセメントと条鋼の付着力を高め、一体的な挙
動をさせて本設基礎杭として用いることが可能な条鋼を
芯材とするソイルセメント杭を提供することを目的とす
る。The present invention is intended to solve the above-mentioned problems, and is a soil having a steel core as a core material that can be used as a permanent foundation pile by increasing the adhesive force between the soil cement and the steel strip to behave integrally. The purpose is to provide cement piles.
【０００５】[0005]
【課題を解決するための手段】本発明は、Ｉ型またはＨ
型等の条鋼１の全長あるいは一部にスパイラル筋、フー
プ筋等の鉄筋２を巻付け、溶接箇所４の位置で溶接され
た構造をもつ芯材を、地盤を掘削し、かつ原位置土を攪
拌しながらセメントミルクを流し込んだ中へたて込み、
基礎杭を構成することを特徴とするものである。The present invention is of the type I or H type.
A core material having a structure in which a reinforcing bar 2 such as a spiral bar and a hoop bar is wound around the entire length or a part of a bar steel 1 such as a mold, and the core material having a structure welded at a position of a welding point 4 is excavated in the ground, and in-situ soil is removed. While stirring, pour in the cement milk and pour it in,
It is characterized by constituting a foundation pile.
【０００６】[0006]
【作用】本発明は条鋼に鉄筋を巻き付けることにより、
鉄筋内のソイルセメントを拘束してソイルセメントと芯
材の一体挙動が可能となり、従来はソイルセメントと条
鋼の付着力が小さかったが、鉄筋で抱え込まれた領域内
と領域外のソイルセメント間でソイルセメント自身のせ
ん断力が働くようになり、ソイルセメントと芯材の付着
力が高まって支持力増大の効果が発揮され、本設基礎杭
として用いることが可能となる。[Function] The present invention, by winding the reinforcing bar around the steel bar,
The soil cement inside the rebar is restrained, and the behavior of the soil cement and the core material becomes possible.In the past, the adhesive force between the soil cement and the bar steel was small. The shearing force of the soil cement itself comes into play, the adhesive force between the soil cement and the core material is increased, and the effect of increasing the bearing capacity is exerted, so that it can be used as a permanent foundation pile.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は本発明のソイルセメント杭の鉛直方向断面
図、図２は本発明のソイルセメント杭の水平方向断面図
である。図中、１は条鋼、２はスパイラル鉄筋、３はソ
イルセメント、４は溶接箇所、５は杭本体、６は地盤で
ある。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view of a soil cement pile of the present invention, and FIG. 2 is a horizontal sectional view of a soil cement pile of the present invention. In the figure, 1 is steel bar, 2 is spiral reinforcing bar, 3 is soil cement, 4 is welded portion, 5 is pile main body, and 6 is ground.
【０００８】Ｉ型またはＨ型等の条鋼１には、工場また
は作業現場において適度なピッチを有するスパイラル鉄
筋２を条鋼１の全長あるいは一部に巻き付けて溶接接合
する。杭の施工は、地盤６の杭を施工する原位置土を掘
削攪拌しながらセメントミルクを流しこんでソイルセメ
ントとし、この中へスパイラル鉄筋２を巻付けた条鋼１
を芯材としてたて込む。A spiral reinforcing bar 2 having an appropriate pitch is wound around the entire length or a part of the steel bar 1 and welded to the I or H steel bar 1 at a factory or a work site. The pile construction is carried out by excavating and stirring the in-situ soil for constructing the pile of the ground 6 into cement cement by pouring cement milk into which the spiral rebar 2 is wound.
Build in as a core material.
【０００９】こうして施工したソイルセメント杭は、芯
材のスパイラル鉄筋２がその内部のソイルセメントを拘
束して一体的な挙動をするようになり、スパイラル鉄筋
２で抱え込まれた領域内と領域外のソイルセメント間で
ソイルセメント自身のせん断力が働き、ソイルセメント
と芯材の付着力が高まって支持力が増大し、本設基礎杭
としても十分機能させることができる。In the soil cement pile thus constructed, the spiral reinforcing bar 2 of the core material restrains the soil cement inside the core cement and acts integrally, so that the spiral reinforcing bar 2 inside and outside the area held by the spiral reinforcing bar 2 is The shearing force of the soil cement acts between the soil cements, the adhesive force between the soil cements and the core material increases, and the bearing capacity increases, so that the piles can function sufficiently as a permanent foundation pile.
【００１０】なお、上記実施例ではスパイラル筋を巻き
付けるようにしたが、本発明はスパイラル筋に限定され
るものでなく、楕円形または円形のフープ筋を適当なピ
ッチで巻き付けるようにしてもよく、またスパイラル
筋、フープ筋の両方を巻き付けるようにしてもよい。Although the spiral muscle is wound in the above embodiment, the present invention is not limited to the spiral muscle, and an oval or circular hoop muscle may be wound at an appropriate pitch. Further, both the spiral muscle and the hoop muscle may be wound.
【００１１】なお、スパイラル筋、フープ筋等を巻き付
けるピッチ間隔は狭いほどソイルセメントと芯材の付着
力を大きくすることが可能であるが、ピッチ間隔を狭く
すると巻付け作業が増大するとともに、コストも高くな
るので、巻き付けるピッチ間隔はコスト、巻付け作業と
の兼ね合いで適宜決めればよい。It should be noted that the narrower the pitch interval around which the spiral streak, the hoop streak, etc. are wound, the greater the adhesive force between the soil cement and the core material can be. However, if the pitch interval is narrowed, the winding work will increase and the cost will increase. Therefore, the winding pitch interval may be appropriately determined in consideration of the cost and the winding work.
【００１２】[0012]
【発明の効果】以上のように本発明によれば、芯材とソ
イルセメントの一体的な挙動が可能となり、ソイルセメ
ントと芯材の付着力を高めることができるので、一般的
な構造物の基礎杭あるいは一時的な仮設杭に使用でき、
将来的に構造物を撤去し開削工事を行うような場合、仮
土留壁の一部として転用することもできる。また、既製
杭の打撃工法と比較して、工事費が安価となり経済的で
あると同時に土砂搬出、鉄筋籠の組み立て等の手間が省
け、工事工程の短縮を図ることが可能となる。As described above, according to the present invention, the core material and the soil cement can be integrally behaved, and the adhesive force between the soil cement and the core material can be increased. Can be used for foundation piles or temporary temporary piles,
If the structure will be removed and excavation work will be performed in the future, it can be diverted as part of the temporary retaining wall. Further, as compared with the hammering method for ready-made piles, the construction cost is low and it is economical, and at the same time, it is possible to save the labor such as carrying out earth and sand and assembling the rebar cage, and shortening the construction process.
【図１】 本発明のソイルセメント杭の鉛直方向断面図
である。FIG. 1 is a vertical sectional view of a soil cement pile of the present invention.
【図２】 本発明のソイルセメント杭の水平方向断面図
である。FIG. 2 is a horizontal sectional view of a soil cement pile of the present invention.
１…条鋼、２…スパイラル鉄筋、３…ソイルセメント、
４…溶接箇所、５…杭本体、６…地盤。1 ... Strip steel, 2 ... Spiral rebar, 3 ... Soil cement,
4 ... Welding point, 5 ... Pile body, 6 ... Ground.
Claims (2)
がらセメントミルクを流し込んだ中に、条鋼の全長また
は一部に鉄筋を巻き付けた構造を有する芯材をたて込み
形成したことを特徴とする条鋼を芯材とするソイルセメ
ント杭。1. The ground is excavated and cement milk is poured while stirring the in-situ soil, and a core material having a structure in which a reinforcing bar is wound around the entire length or a part of the steel bar is formed and formed. Soil cement pile with a core of bar steel.
て、前記鉄筋はスパイラル筋またはフープ筋であること
を特徴とするソイルセメント杭。2. The soil cement pile according to claim 1, wherein the reinforcing bars are spiral reinforcing bars or hoop reinforcing bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27295892A JPH06116947A (en) | 1992-10-12 | 1992-10-12 | Soil cement pile with bar steel as core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27295892A JPH06116947A (en) | 1992-10-12 | 1992-10-12 | Soil cement pile with bar steel as core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06116947A true JPH06116947A (en) | 1994-04-26 |
Family
ID=17521162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27295892A Pending JPH06116947A (en) | 1992-10-12 | 1992-10-12 | Soil cement pile with bar steel as core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06116947A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939020A (en) * | 2014-04-30 | 2014-07-23 | 中交天津港湾工程研究院有限公司 | Anti-winding deep mixing pile drill bit |
| JP2016006264A (en) * | 2014-06-20 | 2016-01-14 | 東日本旅客鉄道株式会社 | Ground improvement pile |
-
1992
- 1992-10-12 JP JP27295892A patent/JPH06116947A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939020A (en) * | 2014-04-30 | 2014-07-23 | 中交天津港湾工程研究院有限公司 | Anti-winding deep mixing pile drill bit |
| CN103939020B (en) * | 2014-04-30 | 2016-01-06 | 中交天津港湾工程研究院有限公司 | A kind of antiwind drilling bit of deep submerged agitation pile |
| JP2016006264A (en) * | 2014-06-20 | 2016-01-14 | 東日本旅客鉄道株式会社 | Ground improvement pile |
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