JPH0447018A - Reinforcing method for poor subsoil - Google Patents
Reinforcing method for poor subsoilInfo
- Publication number
- JPH0447018A JPH0447018A JP15525090A JP15525090A JPH0447018A JP H0447018 A JPH0447018 A JP H0447018A JP 15525090 A JP15525090 A JP 15525090A JP 15525090 A JP15525090 A JP 15525090A JP H0447018 A JPH0447018 A JP H0447018A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- flexible hose
- ground
- subsoil
- soft 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
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 8
- 239000008187 granular material Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (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】 〈産業上の利用分野〉 本発明は軟弱地盤の補強方法に関するものである。[Detailed description of the invention] <Industrial application field> The present invention relates to a method for reinforcing soft ground.
〈従来の技術の問題点〉
近年、ウォーターフロントや湖沼地等の開発が急速に進
められている。<Problems with conventional technology> In recent years, the development of waterfronts, lakes, and marshes has been rapidly progressing.
しかし、これらの場所は、非常に地盤が軟弱であるため
、地盤の補強が必要となる。However, the ground in these locations is extremely soft, so reinforcement of the ground is required.
〈本発明の目的〉
本発明は上記のような問題点を解決するためになされた
もので、軟弱地盤の補強を確実に行うことができる軟弱
地盤の補強方法を提供することを目的きする。<Object of the present invention> The present invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for reinforcing soft ground that can reliably reinforce the soft ground.
〈問題点を解決するための手段〉
即ち本発明は、撓性ホースの閉塞端を押し込み部材によ
り軟弱地盤内に圧入することによって、軟弱地盤内に撓
性ホースを設置した後、この撓性ホースの地上部の開放
端より撓性ホース内に、空気圧により軽量な粒体を圧送
、充填して補強杭を築造して行う、軟弱地盤の補強方法
である。<Means for Solving the Problems> That is, the present invention provides a method for installing a flexible hose in soft ground by press-fitting the closed end of the flexible hose into soft ground using a pushing member, and then This is a method of reinforcing soft ground in which lightweight granules are pumped and filled using air pressure into a flexible hose from the open end of the above-ground part of the ground to build a reinforcing pile.
く本発明の説明〉 以下、本発明の詳細な説明する。Description of the present invention> The present invention will be explained in detail below.
〈イ〉撓性ホース（第１図）
撓性ホース１は、布、合成樹脂、綿などで形成されたフ
レキシブルなホースである。<A> Flexible Hose (Fig. 1) The flexible hose 1 is a flexible hose made of cloth, synthetic resin, cotton, or the like.
例えば、消防用のホース等が適している。For example, a fire hose is suitable.
〈口〉圧入補助部材（第２図）
撓性ホース１を地盤に圧入するための補助部材として、
例えば先端コーン２と押し込み部材３を使用する。<Port> Press-fitting auxiliary member (Fig. 2) As an auxiliary member for press-fitting the flexible hose 1 into the ground,
For example, a tip cone 2 and a pushing member 3 are used.
先端コーン２は、筒体の一端側に尖頭部２１を形成し、
また他端側に断差部を形成して、軸と直交方向の押圧面
２２を形成する。The tip cone 2 forms a pointed head 21 on one end side of the cylindrical body,
Further, a cut-off portion is formed on the other end side to form a pressing surface 22 in a direction perpendicular to the axis.
また、尖頭部２１と押圧面２２との間はホース取付面２
３とする。In addition, between the pointed head 21 and the pressing surface 22, there is a hose mounting surface 2.
Set it to 3.
押し込み部材３は、先端コーン２の押圧面２２と嵌合可
能な径を有する中空の管体であり、軸方向の全長にわた
ってスリット３１を開設する。The pushing member 3 is a hollow tube having a diameter that allows it to fit into the pressing surface 22 of the tip cone 2, and has a slit 31 over its entire length in the axial direction.
〈ハ〉撓性ホースの設置（第３図） 軟弱地盤３内に撓性ホース１を設置する。<C> Installation of flexible hose (Fig. 3) A flexible hose 1 is installed in soft ground 3.
先ず、第３図に示すように、先端コーン２のホース取付
面２３に、撓性ホース１の一端を被せて接合し、閉塞す
る。First, as shown in FIG. 3, one end of the flexible hose 1 is placed over and joined to the hose attachment surface 23 of the tip cone 2, and the hose is closed.
次に、押し込み部材３の一端を先端コーン２の押圧面２
２に当接させ、押し込み部材２の他端に圧入力を加える
。Next, one end of the pushing member 3 is attached to the pressing surface of the tip cone 2.
2 and apply a pressing force to the other end of the pushing member 2.
これによって、先端コーン２に追随させて軟弱地盤４内
に撓性ホース１を圧入、設置することができる。Thereby, the flexible hose 1 can be press-fitted and installed into the soft ground 4 following the tip cone 2.
上記の撓性ホース１の圧入作業の際には、押し込み部材
３と撓性ホース１との間から、砂や礫などの充填材５の
投入を並行して行う場合もある。When press-fitting the flexible hose 1 described above, filler material 5 such as sand or gravel may be simultaneously introduced from between the pushing member 3 and the flexible hose 1.
〈二〉粒体の充填（第３図）
撓性ホース１の設置完了後、押し込み部材３を抜き取る
。<2> Filling with granules (Fig. 3) After the installation of the flexible hose 1 is completed, the pushing member 3 is pulled out.
このとき、先端コーン２は地中に残したままとする。At this time, the tip cone 2 is left underground.
次に、撓性ホース１の開放端１１から空気圧によって、
軽量な粒体６を撓性ホース１内に圧送し充填する。Next, by air pressure from the open end 11 of the flexible hose 1,
The lightweight granules 6 are forced into the flexible hose 1 and filled.
粒体６には、例えば発泡スチロールビーズ、軽量骨材、
造粒された石炭灰等の材料を用いる。The granules 6 include, for example, expanded polystyrene beads, lightweight aggregate,
A material such as granulated coal ash is used.
そして、撓性ホース１の全長にわたって粒体６を充填し
、撓性ホース１を外周方向に膨張させた状態で、開放端
１１を閉塞する。Then, the entire length of the flexible hose 1 is filled with particles 6, and the open end 11 is closed while the flexible hose 1 is expanded in the outer circumferential direction.
これによって、撓性ホース１は、軟弱地盤４の表層部か
ら所定の深さまで杭状に設置されることになる。As a result, the flexible hose 1 is installed in the shape of a pile from the surface layer of the soft ground 4 to a predetermined depth.
〈本発明の作用〉 次に、本発明の作用について説明する。<Action of the present invention> Next, the operation of the present invention will be explained.
本発明の撓性ホース１による補強杭は、内部に軽量な粒
体６が封入されているため、補強杭に浮力が発生して、
軟弱地盤４内に設置しても沈むことがない。Since the reinforced pile using the flexible hose 1 of the present invention has the lightweight granules 6 enclosed inside, buoyancy is generated in the reinforced pile.
It will not sink even if installed in soft ground 4.
従って、軟弱地盤４の表層部から所定の深さまでを補強
することが可能となる。Therefore, it becomes possible to reinforce the soft ground 4 from the surface layer to a predetermined depth.
そして、第４図に示すように、撓性ホース１を軟弱地盤
４内に埋設して外周方向に膨張させることによって、そ
の膨張圧が周辺軟弱地盤４に伝達され、周辺軟弱地盤４
を圧密して補強を図ることができる。Then, as shown in FIG. 4, by burying the flexible hose 1 in the soft ground 4 and expanding it in the outer circumferential direction, the expansion pressure is transmitted to the surrounding soft ground 4.
can be reinforced by consolidation.
また、撓性ホース１内には粒体６が充填されているため
、撓性ホースｌは杭状に埋設されることになる。In addition, since the flexible hose 1 is filled with particles 6, the flexible hose 1 is buried in the shape of a pile.
そのため、撓性ホース１自体の杭支持力によって、地盤
の補強効果も期待することができる。Therefore, the effect of reinforcing the ground can be expected due to the pile supporting capacity of the flexible hose 1 itself.
〈本発明の効果〉
本発明は以上説明したようになるので、次のような効果
を期待することができる。<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.
〈イ〉本発明の撓性ホースによる補強杭は、内部に軽量
な粒体が封入されているため、補強杭に浮力が発生して
、非常に軟弱な地盤内に設置しても沈むことがない。<B> The reinforcing pile using the flexible hose of the present invention has lightweight granules sealed inside, so buoyancy is generated in the reinforcing pile, and it will not sink even if installed in very soft ground. do not have.
そのため、軟弱地盤の表層部から所定の深さまでを補強
することができ、軟弱地盤上に作業員等が載っても沈む
ことがない。Therefore, it is possible to reinforce the soft ground from the surface layer to a predetermined depth, and even if a worker or the like stands on the soft ground, it will not sink.
従って、軟弱地盤上でのシート敷設作業、あるいは盛土
作業等を効率良く行うことができる。Therefore, sheet laying work or embankment work on soft ground can be performed efficiently.
〈口〉軟弱地盤内に圧入した撓性ホース内に粒体を圧入
することにより、撓性ホースが外周方向に膨張し、周辺
の軟弱地盤を圧密するため、地盤の強度を増加させるこ
とができる。<Exposure> By press-fitting granules into a flexible hose that is press-fitted into soft ground, the flexible hose expands in the outer circumferential direction and consolidates the surrounding soft ground, increasing the strength of the ground. .
〈ハ〉また、撓性ホース内には粒体が充填されているた
め、撓性ホースは杭状に埋設されることになる。<C> Also, since the flexible hose is filled with particles, the flexible hose is buried in the shape of a pile.
従って、撓性ホース自体の杭支持力による地盤の補強効
果も期待することができる。Therefore, the effect of reinforcing the ground due to the pile supporting capacity of the flexible hose itself can be expected.
第１図：本発明の軟弱地盤の補強方法の説明図第２図：
工大補助部材の説明図
第３図：軟弱地盤内に撓性ホースを圧入する方法の説明
図
第４図二作用を示す説明図
出願人 大成建設株式会社 ２Figure 1: Explanatory diagram of the soft ground reinforcement method of the present invention Figure 2:
An explanatory diagram of the auxiliary components of the engineering college. Figure 3: An explanatory diagram of the method of press-fitting a flexible hose into soft ground. Figure 4. An explanatory diagram showing the two functions. Applicant: Taisei Corporation 2
Claims (1)
盤内に圧入することによって、 軟弱地盤内に撓性ホースを設置した後、 この撓性ホースの地上部の開放端より撓性ホース内に、
空気圧により軽量な粒体を圧送、充填して補強杭を築造
して行う、 軟弱地盤の補強方法。(1) After installing the flexible hose in the soft ground by pressing the closed end of the flexible hose into the soft ground with a pushing member, insert the flexible hose into the flexible hose from the open end of the above ground part of the flexible hose. ,
A method of reinforcing soft ground by pumping and filling lightweight granules using air pressure to build reinforcing piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15525090A JPH0447018A (en) | 1990-06-15 | 1990-06-15 | Reinforcing method for poor subsoil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15525090A JPH0447018A (en) | 1990-06-15 | 1990-06-15 | Reinforcing method for poor subsoil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0447018A true JPH0447018A (en) | 1992-02-17 |
Family
ID=15601819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15525090A Pending JPH0447018A (en) | 1990-06-15 | 1990-06-15 | Reinforcing method for poor subsoil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447018A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350104C (en) * | 2005-07-04 | 2007-11-21 | 雷玉华 | Construction method of synchronous combined pile with high-pressure rotary-spraying pile tip |
| CN100366829C (en) * | 2005-12-27 | 2008-02-06 | 雷玉华 | Method for construction of large head expanding combined pile |
| CN100371537C (en) * | 2006-01-05 | 2008-02-27 | 江苏南水土建工程公司 | Novel method for reinforcing deep soft foundition-cencrete core sand stone pile compound foundition method |
| CN100427688C (en) * | 2005-06-09 | 2008-10-22 | 清华大学 | Side downhole soil-extruded foundation treating method and horizontal extruding-spreading device |
-
1990
- 1990-06-15 JP JP15525090A patent/JPH0447018A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427688C (en) * | 2005-06-09 | 2008-10-22 | 清华大学 | Side downhole soil-extruded foundation treating method and horizontal extruding-spreading device |
| CN100350104C (en) * | 2005-07-04 | 2007-11-21 | 雷玉华 | Construction method of synchronous combined pile with high-pressure rotary-spraying pile tip |
| CN100366829C (en) * | 2005-12-27 | 2008-02-06 | 雷玉华 | Method for construction of large head expanding combined pile |
| CN100371537C (en) * | 2006-01-05 | 2008-02-27 | 江苏南水土建工程公司 | Novel method for reinforcing deep soft foundition-cencrete core sand stone pile compound foundition method |
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