JPH059934A - Tip pile having cloth cylinder body - Google Patents
Tip pile having cloth cylinder bodyInfo
- Publication number
- JPH059934A JPH059934A JP16165691A JP16165691A JPH059934A JP H059934 A JPH059934 A JP H059934A JP 16165691 A JP16165691 A JP 16165691A JP 16165691 A JP16165691 A JP 16165691A JP H059934 A JPH059934 A JP H059934A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- cloth cylinder
- ready
- cylinder body
- made pile
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、既製杭に装着した袋体
の中にセメントミルクやコンクリート等を注入して拡大
部を形成させるのに用いられる袋体を装着した既製杭に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ready-made pile equipped with a bag body used to form an enlarged portion by injecting cement milk, concrete or the like into the bag body fitted to the ready-made pile. ..
【0002】[0002]
【従来の技術】従来より、高い鉛直支持力を発現させる
ために布製筒体を有した既製杭が開発されている。この
杭は例えば図3に示すように、また例えば特開昭61−
122324号公報に示されているように、既製杭の先
端部の外周に布製筒体が装着された杭である。2. Description of the Related Art Conventionally, ready-made piles having cloth cylinders have been developed in order to exert a high vertical supporting force. This pile is, for example, as shown in FIG.
As shown in Japanese Patent No. 122324, the pile is a pile in which a cloth cylinder is attached to the outer circumference of the tip of the ready-made pile.
【0003】この杭は予め掘削された土中の所定深さの
孔に埋め込まれた後、布製筒体内に杭中空部に設置され
た注入管を通して一定の圧力がかかったセメントミルク
等の固結性流動体が注入できる構造となっている。この
杭では既製杭表面が滑らかであるため、固結性流動体硬
化後の球根部と既製杭との付着が充分ではなく、大きな
荷重が作用した場合には付着が切れて杭が破壊してしま
うといった問題があった。This pile is embedded in a pre-excavated hole of a predetermined depth in the soil, and then cemented with cement milk or the like under a certain pressure through an injection pipe installed in the hollow portion of the pile in the cloth cylinder. It has a structure that allows injection of a sexual fluid. In this pile, since the surface of the ready-made pile is smooth, the adhesion between the bulb portion after solidifying fluid hardening and the ready-made pile is not sufficient, and when a large load acts, the adhesion will be broken and the pile will be destroyed. There was a problem that it would end up.
【0004】そこで、実開昭62−148630号公報
に示されているように、既製杭の表面に凹凸を付けて付
着力を増強する方法が提案されている。Therefore, as disclosed in Japanese Utility Model Laid-Open No. 62-148630, a method has been proposed in which the surface of a ready-made pile is provided with irregularities to enhance the adhesive force.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、この杭
は既製杭が凹部10で断面欠損しているため、杭の輸送
中や施工時に凹部からひび割れが発生し易いといった問
題があった。また、断面欠損している分だけ既製杭の肉
厚を厚くしなければならないため、コンクリートのボリ
ュームが増えて不経済となっていた。However, since the ready-made pile has a cross-section missing in the recess 10 in this pile, there is a problem that cracks easily occur from the recess during transportation or construction of the pile. In addition, since the wall thickness of the ready-made pile must be increased by the amount corresponding to the lack of cross section, the volume of concrete increases, which is uneconomical.
【0006】本発明の目的は、前述のように既製杭のコ
ンクリート部に凹凸を設けなくても球根部との付着が充
分期待でき、従って輸送中や施工時にひび割れが発生す
る危険がなく、尚且つその製造が経済的である布製筒体
付先端杭を提供することである。The object of the present invention is, as mentioned above, that the adhesion to the bulb portion can be expected sufficiently even if the concrete portion of the ready-made pile is not provided with irregularities, and therefore there is no risk of cracking during transportation or construction, and It is an object of the present invention to provide a tip pile with a cloth cylinder, which is economical to manufacture.
【0007】[0007]
【課題を解決するための手段】本発明は、布製筒体がそ
の上下部でバンドによって既製杭の外周に装着された杭
であって、この布製筒体内に固結性流動体を注入するた
めの注入管を有しており、さらに布製筒体で覆われた既
製杭の外周面に鉄筋が少なくとも一周以上にわたって固
着されていることを特徴とする先端杭である。DISCLOSURE OF THE INVENTION The present invention is a pile in which a cloth cylinder is attached to the outer periphery of a ready-made pile by a band at the upper and lower parts thereof, and a solidifying fluid is injected into the cloth cylinder. The front end pile is characterized in that the reinforcing rod is fixed to the outer peripheral surface of the ready-made pile covered with the cloth tubular body for at least one round or more.
【0008】以下、図面を用いて説明する。図1は、本
発明の杭の一例で、鋼管杭1の外周面に鉄筋2を数箇所
に巻き付けて固着し、この上から布製筒体3を装着した
杭の筒体内に、セメントミルク等の固結性流動体4を圧
入したときの状態を示した半断面図である。この杭は通
常最下端の杭として用いられる。A description will be given below with reference to the drawings. FIG. 1 is an example of a pile of the present invention, in which reinforcing bars 2 are wound around several points on the outer peripheral surface of a steel pipe pile 1 and fixed to the pile, and a cloth cylinder 3 is attached to the pile from the top of the pile of cement milk or the like. It is a half cross-sectional view showing a state when the caking fluid 4 is press-fitted. This pile is usually used as the bottommost pile.
【0009】本発明に用いる既製杭は、鋼管杭、コンク
リート杭、鋼管コンクリート複合杭等である。既製杭の
外径は、通常300〜600mmφ、杭長は2〜4mで
ある。図1に示すように、布製筒体で覆われた既製杭の
外周面には、鉄筋が巻き付けられ、固着されている。鉄
筋は丸鋼、異形鉄筋、PC鋼棒、ピアノ線、鉄線等であ
り、既製杭の外周に少なくとも一周以上を巻き付ける。
付着力を向上させるためには好ましくは3周以上とす
る。鉄筋はそれぞれ独立して巻いてもよく、また連続し
てラセン状に巻いてもよい。更にはラセン状に巻いた上
で、反対方向にラセン状に巻いてメッシュ状にすること
もできる。鉄筋径は5〜20mmφが好ましく、更に好
ましくは10mmφ以上である。ピッチは5〜20cm
間隔が適当である。鉄筋は既製杭が鋼管杭等の場合は溶
接によって固着すれば良いが、コンクリート杭等の場合
には鉄筋が部分的に溶接できるように予め杭に間隔をあ
けて杭周囲を一周する鉄板等を埋めこんでおくことが好
ましい。勿論鉄筋は全周溶接することが好ましいが、支
持する荷重によっては部分的に溶接をするだけでもよ
い。The ready-made piles used in the present invention are steel pipe piles, concrete piles, steel pipe concrete composite piles and the like. The outer diameter of the ready-made pile is usually 300 to 600 mmφ and the pile length is 2 to 4 m. As shown in FIG. 1, a reinforcing bar is wound around and fixed to the outer peripheral surface of a ready-made pile covered with a cloth cylinder. The reinforcing bars are round steel, deformed reinforcing bars, PC steel bars, piano wires, iron wires, etc., and at least one or more turns are wound around the outer circumference of the ready-made pile.
In order to improve the adhesive force, the number of turns is preferably 3 or more. The reinforcing bars may be wound independently of each other, or may be continuously wound in a spiral shape. Further, it may be wound in a spiral shape and then wound in a spiral shape in the opposite direction to form a mesh shape. The diameter of the reinforcing bar is preferably 5 to 20 mmφ, and more preferably 10 mmφ or more. Pitch is 5 to 20 cm
The spacing is appropriate. If the ready-made pile is a steel pipe pile, etc., it may be fixed by welding, but in the case of concrete pile, etc., a steel plate, etc., that surrounds the pile in advance so that the reinforcement can be partially welded, is provided. It is preferable to embed it. Of course, it is preferable that the reinforcing bars are welded all around, but depending on the load to be supported, welding may be performed only partially.
【0010】この鉄筋が固着された部分を覆うように布
製筒体が被せられ、上下をバンド5によって既製杭に取
り付けられている。布製筒体装着部Aの拡大断面図を図
2に示す。バンドは通常梱包用帯鋼やワイヤーロープ等
が用いられる。バンドは通常1〜4ton程度の締め付
け力で固着されている。梱包用帯鋼の場合、その幅は3
0〜70mm、ワイヤーロープの場合は直径10〜20
mmφ程度である。A cloth cylinder is covered so as to cover the portion to which the reinforcing bars are fixed, and the upper and lower parts are attached to the ready-made piles by the band 5. FIG. 2 shows an enlarged cross-sectional view of the cloth tubular body mounting portion A. The band is usually made of packing steel strip or wire rope. The band is usually fixed with a tightening force of about 1 to 4 tons. For packing strip steel, its width is 3
0 to 70 mm, diameter 10 to 20 for wire rope
It is about mmφ.
【0011】また、装着部分の布製筒体と既製杭の間に
クッション材6を全周にわたって配すると固結性流動体
の漏れに対して安全である。クッション材の材質はポリ
塩化ビニル、ポリエチレン、ポリウレタン等の発泡体、
或いはラバー等、バンド締め付け後に布製筒体と杭体と
の空隙が塞がるような材質のものが挙げられる。クッシ
ョン材の幅はバンドよりも広いものであればよく、50
〜200mm程度のものが好ましい。なお、バンドとバ
ンドの間に、鉄筋を設ければ、コンクリート注入時に布
製筒体と杭体との取付位置がズレ難くなる。Further, if the cushion material 6 is arranged over the entire circumference between the cloth cylinder and the ready-made pile at the mounting portion, it is safe against leakage of the solidifying fluid. The material of the cushion material is polyvinyl chloride, polyethylene, foam such as polyurethane,
Alternatively, a material such as rubber that can close the gap between the cloth tubular body and the pile body after tightening the band can be used. The width of the cushion material should be wider than that of the band.
It is preferably about 200 mm. In addition, if reinforcing bars are provided between the bands, it is difficult to shift the mounting positions of the cloth cylinder and the pile during the concrete pouring.
【0012】布製筒体は円筒形であり、その両端部は既
製杭に均等に取り付け易いように縮む構造としたり、タ
ックを付けたり、またバンドとの接触部を折り返して二
重にして補強する構造としたりしても良い。布製筒体は
最初からシームレスで織っても良いし、一枚の布を円筒
形にまいて直線状に縫製して筒体を形成しても良いし、
或いはスパイラル状に縫製して筒体を形成しても良い。The cloth cylinder has a cylindrical shape, and both ends of the cloth cylinder are contracted so as to be evenly attached to ready-made piles, tacked, and contact portions with the band are folded back to be reinforced. It may be structured. The cloth cylinder may be seamlessly woven from the beginning, or one cloth may be sprinkled in a cylindrical shape and sewn in a straight line to form the cylinder.
Alternatively, the tubular body may be formed by sewing in a spiral shape.
【0013】布製筒体の材質は固結性流動体の脱水性と
強度の点から、ポリアミド、ポリエステル、ビニロン、
ポリプロピレン等の合成繊維であることが好ましい。こ
のように固結性流動体の水を外へ排出できる材質にする
と、施工に際してこの杭体の布製筒体内にセメントミル
ク等の固結性流動体が注入され、所定の圧力例えば6〜
10kg/cm2 の注入圧力により固結性流動体中の水
分が布製筒体表面を通して脱水され、固結性流動体は硬
化後に緻密で強固な硬化体となるので好ましい。The material of the cloth cylinder is polyamide, polyester, vinylon, from the viewpoint of dehydration and strength of the caking fluid.
It is preferably a synthetic fiber such as polypropylene. When a material capable of discharging the water of the caking fluid is discharged to the outside in this way, a caking fluid such as cement milk is injected into the cloth cylinder of the pile body at the time of construction, and a predetermined pressure, for example, 6 to
Moisture in the caking fluid is dehydrated through the surface of the cloth cylinder by the injection pressure of 10 kg / cm 2 , and the caking fluid becomes a dense and strong cured body after curing, which is preferable.
【0014】また、この杭は布製筒体内に固結性流動体
を注入するための注入管7を有している。注入管は鉄管
や塩化ビニル管等が使用される。The pile also has an injection pipe 7 for injecting the solidifying fluid into the cloth cylinder. An iron pipe, a vinyl chloride pipe, or the like is used as the injection pipe.
【0015】[0015]
【実施例】以下、実施例により本発明を詳細に説明す
る。本実施例に用いた杭は図1に示した構造のものであ
る。既製杭としては外径400mmφ、肉厚6mm、長
さ3mの鋼管杭を使用した。この鋼管杭の外周に直径1
3mmφの鉄筋を全周にわたって溶接し、これを20c
m間隔で10箇所に設けた。この上から外径600mm
φ、長さ2.5mのナイロン製の布製筒体を被せ、両端
を直径10mmφのワイヤーロープによって約1.5t
onの力で締め付け、ワイヤークリップによって固定さ
せた。ナイロン製の筒体はスパイラル状に縫製したもの
で、両端はタックをとって装着部分の径が430mmφ
となる構造とした。また、装着部は固結性流動体が注入
時に漏出しないようにクッション材を鋼管杭と布製筒体
との間に配し、また装着部がずれないように鉄筋を挟ん
で両側でワイヤーロープを締め付けた。The present invention will be described in detail below with reference to examples. The pile used in this example has the structure shown in FIG. As the ready-made pile, a steel pipe pile having an outer diameter of 400 mmφ, a wall thickness of 6 mm and a length of 3 m was used. Diameter 1 on the periphery of this steel pile
Welded a 3 mmφ rebar around the entire circumference,
It was provided at 10 positions at m intervals. 600mm outer diameter from above
Approximately 1.5t with a wire rope with a diameter of 10mm and both ends covered with a nylon cloth cylinder with a diameter of 2.5m.
It was tightened with a force of on and fixed with a wire clip. The nylon cylinder is sewn in a spiral shape, and both ends are tacked so that the diameter of the mounting part is 430 mmφ.
The structure is as follows. In addition, a cushioning material is placed between the steel pipe pile and the cloth cylinder to prevent the solidifying fluid from leaking when pouring, and a wire rope is sandwiched on both sides with a reinforcing bar to prevent the fitting portion from slipping. Tightened.
【0016】このような本発明の杭をコンクリート杭の
下杭として用いた。杭長は全長15mで、上杭が直径4
00mmφ長さ12mの既製コンクリート杭であった。
上杭と下杭は従来通り溶接によって接続した。実施例で
は既製杭として鋼管杭を用いたため、従来の杭のように
輸送中や施工時にひび割れが発生することが全くなく、
断面欠損がないため肉厚を厚くする必要がなく、尚且つ
鉄筋溶接や注入管取り付けが極めて容易であるために経
済的であった。Such a pile of the present invention was used as a lower pile of a concrete pile. The pile length is 15m and the top pile has a diameter of 4m.
It was a ready-made concrete pile with a length of 00 mm and a length of 12 m.
The upper and lower piles were connected by welding as usual. In the example, since steel pipe piles were used as ready-made piles, cracks do not occur at all during transportation or construction unlike conventional piles,
Since there is no cross-section loss, it is not necessary to increase the wall thickness, and since it is extremely easy to weld the reinforcing bars and attach the injection pipe, it was economical.
【0017】また、施工後に載荷試験を実施しその支持
力を確認したところ、凹凸を有する従来の杭と同等の支
持力が得られ、杭本体と球根の付着力は従来の凹凸を付
けた杭の付着力と同等の効果が確認された。Further, when a load test was carried out after the construction and the supporting force was confirmed, a supporting force equivalent to that of a conventional pile having unevenness was obtained, and the adhesive force between the pile body and the bulb was the same as that of the conventional unevenly-shaped pile. It was confirmed that the same effect as the adhesive force of
【0018】[0018]
【発明の効果】本発明による杭を用いることにより、既
製杭と布製筒体内に形成された球根との付着力により大
きな支持力が得られるのみならず、杭の輸送中や施工時
にひび割れが発生する危険性がなく、更には断面欠損が
ないので既製杭の肉厚を厚くする必要がなく経済的でも
ある。EFFECTS OF THE INVENTION By using the pile according to the present invention, not only a large supporting force can be obtained due to the adhesive force between the prefabricated pile and the bulb formed in the cloth cylinder, but also cracks occur during transportation or construction of the pile. There is no risk of damage to the pile, and since there is no cross-section loss, it is economical because there is no need to increase the wall thickness of the ready-made pile.
【図1】本発明の杭の布製筒体内に、固結性流動体を注
入して袋体を拡大膨張させたときの半断面図である。FIG. 1 is a half cross-sectional view when a caking fluid is injected into a cloth cylinder of a pile of the present invention to expand and expand a bag body.
【図2】図1に示す布製筒体装着部Aの拡大断面図であ
る。FIG. 2 is an enlarged cross-sectional view of a cloth tubular body mounting portion A shown in FIG.
【図3】従来の杭の布製筒体内に、固結性流動体を注入
して袋体を拡大膨張させたときの半断面図である。FIG. 3 is a half cross-sectional view of a case in which a solidifying fluid is injected into the cloth cylinder of a conventional pile to expand and expand the bag body.
1─既製杭 2─鉄筋 3─布製筒体 4─固結性流動体(球根部) 5─バンド 6─クッション材 7─注入管 8─ワイヤークリップ 9─コンクリート杭 10─凹部である 1-ready-made pile 2-reinforcing bar 3-cloth cylinder 4-solidifying fluid (bulb part) 5-band 6-cushion material 7-injection pipe 8-wire clip 9-concrete pile 10-recess
Claims (1)
既製杭の外周に装着された杭であって、この布製筒体内
に固結性流動体を注入するための注入管を有しており、
さらに布製筒体で覆われた既製杭の外周面に鉄筋が少な
くとも一周以上にわたって固着されていることを特徴と
する先端杭。Claim: What is claimed is: 1. A cloth cylinder is a pile in which upper and lower portions of the cloth cylinder are attached to the outer circumference of a ready-made pile by injection, and injection for injecting the solidifying fluid into the cloth cylinder is performed. Has a tube,
Furthermore, a tip pile characterized in that rebars are fixed to the outer peripheral surface of a ready-made pile covered with a cloth cylinder for at least one round.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16165691A JPH059934A (en) | 1991-07-02 | 1991-07-02 | Tip pile having cloth cylinder body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16165691A JPH059934A (en) | 1991-07-02 | 1991-07-02 | Tip pile having cloth cylinder body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH059934A true JPH059934A (en) | 1993-01-19 |
Family
ID=15739335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16165691A Pending JPH059934A (en) | 1991-07-02 | 1991-07-02 | Tip pile having cloth cylinder body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH059934A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6295118B1 (en) | 1996-10-29 | 2001-09-25 | Canon Kabushiki Kaisha | Optical arrangement for exposure apparatus |
US6558636B2 (en) | 2000-01-27 | 2003-05-06 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Plasma type exhaust gas cleaning apparatus |
CN105908707A (en) * | 2016-05-27 | 2016-08-31 | 宜兴市太湖地基工程有限公司 | Triangular pile foundation |
-
1991
- 1991-07-02 JP JP16165691A patent/JPH059934A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6295118B1 (en) | 1996-10-29 | 2001-09-25 | Canon Kabushiki Kaisha | Optical arrangement for exposure apparatus |
US6558636B2 (en) | 2000-01-27 | 2003-05-06 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Plasma type exhaust gas cleaning apparatus |
CN105908707A (en) * | 2016-05-27 | 2016-08-31 | 宜兴市太湖地基工程有限公司 | Triangular pile foundation |
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