JPH08239833A - Pile with bag body - Google Patents

Pile with bag body

Info

Publication number
JPH08239833A
JPH08239833A JP4169895A JP4169895A JPH08239833A JP H08239833 A JPH08239833 A JP H08239833A JP 4169895 A JP4169895 A JP 4169895A JP 4169895 A JP4169895 A JP 4169895A JP H08239833 A JPH08239833 A JP H08239833A
Authority
JP
Japan
Prior art keywords
bag
pile
cloth bag
band
diameter
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
Application number
JP4169895A
Other languages
Japanese (ja)
Other versions
JP3653298B2 (en
Inventor
Hidekazu Shigematsu
松 秀 和 重
崎 和 孝 ▲から▼
Kazutaka Karasaki
Original Assignee
Asahi Chem Ind Co Ltd
旭化成工業株式会社
Ashimori Ind Co Ltd
芦森工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chem Ind Co Ltd, 旭化成工業株式会社, Ashimori Ind Co Ltd, 芦森工業株式会社 filed Critical Asahi Chem Ind Co Ltd
Priority to JP04169895A priority Critical patent/JP3653298B2/en
Publication of JPH08239833A publication Critical patent/JPH08239833A/en
Application granted granted Critical
Publication of JP3653298B2 publication Critical patent/JP3653298B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To provide a bag body pile provided with a bag at its top end which can be mounted with a simple band without applying large force on a band mounting part though the bag body can withstand a high pressure which expands particularly a fixed quality flowing matter. CONSTITUTION: A seamless cloth bag 11 of which both end parts 11a are formed in +0 to 100mm in pile outside diameter and of which center part 11b is formed in +100 to 600mm in diameter, that is, woven in different diameter, and which is not provided with a connection part is covered on the outer periphery of an existing pile 12 near the top end of it. Also the both ends 11a of the seamless cloth bag 11 are mounted with a band 14. By this, a risk of burst of the seamless cloth bag 11 from the connecting part is eliminated, the outer wall of the seamless cloth bag 11 is exhibitly strengthened sufficiently, and a required strength and fastening force of the band 14 can be reduced because any force raising the band does not act in the expansion of the bag body. In addition, because the bag body does not contact with the projected part of the band even if it is expanded, there is no risk of burst of the bag body. Therefore it can be sufficiently expanded in lateral direction at a high pressure, and a higher supporting force of pile can be obtained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、既製杭の先端部に布製
袋体を一体的に取り付けて構成した袋体付杭に係り、特
にこの布製袋体の中にセメントミルクやコンクリート等
の固結性流動物を注入して拡大球根部を形成することが
出来る袋体付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 bag-equipped pile in which a cloth bag is integrally attached to the tip of a prefabricated pile, and in particular, cement milk, concrete or the like is fixed in the cloth bag. The present invention relates to a peg with a bag body capable of injecting a binding fluid to form an enlarged bulb portion.

【0002】[0002]

【従来の技術】従来より、既製杭の先端部に袋体を取り
付け、その既製杭をプレボーリング工法によって拡大掘
削した地盤中に沈設し、しかる後に袋体内に固結性流動
物を注入して根固め球根を造成する工法が知られてい
る。この工法は、例えば特開昭62ー215719号公
報や特開昭62ー63721号公報等に示されているも
のである。
2. Description of the Related Art Conventionally, a bag is attached to the tip of a prefabricated pile, the prefabricated pile is sunk in the ground excavated by the preboring method, and then a solidified fluid is injected into the bag. A method of forming a rooted bulb is known. This construction method is disclosed, for example, in JP-A-62-1215719, JP-A-62-63721 and the like.

【0003】[0003]

【発明が解決しようとする課題】前述のような従来使用
されていた袋体製杭の袋体は、布を円筒形に巻いて筒状
に織成しているため、少なくとも1箇所に布を縫合した
つなぎ目よりなる接結部を有するものであった。従っ
て、袋体内に固結性流動物を注入した時の耐圧度は、該
接結部の強度で決まっていた。そこで最近、袋体の耐圧
強度を改善するために、実開平1ー14235号公報に
示すように接結部を有しないシームレス袋体を用いた杭
が提案され使用されている。
The bag body of the bag piles that has been conventionally used as described above is formed by winding cloth in a cylindrical shape and weaving it into a tubular shape. Therefore, the cloth is sewn at at least one position. It had a connecting portion composed of joints. Therefore, the pressure resistance when the solidifying fluid is injected into the bag is determined by the strength of the joint. Therefore, recently, in order to improve the pressure resistance of the bag body, a pile using a seamless bag body having no connecting portion has been proposed and used as shown in Japanese Utility Model Laid-Open No. 1-14235.

【0004】しかしながら、この袋体は中央部及び両端
部の径が同一なストレートに織成された筒体であるた
め、袋体を既製杭に取り付ける際には、袋体の両端部に
タック等を取って既製杭の外径近くの小さな径にまで折
り畳んだ後で既製杭に被せ、その両端部の上からバンド
によって取り付ける必要があった。そのために、袋体の
耐圧強度は上がるものの、固結性流動物の注入による袋
体の膨張につれて、今度はバンドをめくり上げる大きな
力がかかるため、それに対抗できる剛性の高いバンドを
用い、しかも高い締め付け力で取り付ける必要があっ
た。
However, since the bag body is a tubular body woven in a straight shape in which the diameters of the central portion and both end portions are the same, when attaching the bag body to a ready-made pile, tacks or the like are applied to both end portions of the bag body. It was necessary to fold it up to a small diameter close to the outer diameter of the prefabricated pile, cover it with the prefabricated pile, and attach it with bands from above both ends. Therefore, although the pressure resistance of the bag increases, as the bag expands due to the injection of the solidifying fluid, a large force is required to flip the band up this time. It was necessary to attach with tightening force.

【0005】即ち、前記従来例は図6に示すように、既
製杭1の先端部にシームレス袋体2を装着した構造であ
る。この場合には、ストレートに織成された筒体よりな
るシームレス袋体2の上下両端部2aにタック3を取っ
て既製杭1の外径近くまで径をしぼり込んで、既製杭1
の周りに被せ、その上下両端部2aをバンド4を用いて
強い力で結束して構成していた。また、この構造では、
シームレス袋体2に固結流動物を流入してシームレス袋
体2が膨張した場合には、バンド4にめくり上げる大き
な力がかかるために、バンド4は剛性の高いものを使用
し、かつバンドは極めて強い締め付け力で締結しなけれ
ばならなかった。
That is, as shown in FIG. 6, the conventional example has a structure in which the seamless bag 2 is attached to the tip of the ready-made pile 1. In this case, the tacks 3 are attached to the upper and lower end portions 2a of the seamless bag body 2 made of a straight woven tubular body, and the diameter is squeezed to a value close to the outer diameter of the ready-made pile 1.
And the upper and lower end portions 2a thereof are bound together with a strong force using a band 4. Also, in this structure,
When the solidified fluid flows into the seamless bag body 2 and the seamless bag body 2 expands, a large force is applied to the band 4 so that the band 4 has a high rigidity and is used. It had to be tightened with extremely strong tightening force.

【0006】本発明に係る袋体付杭は、前述の従来の問
題点に鑑み開発された全く新しい技術であって、特に中
央部に対して両端部の径が小さい筒状のシームレス布製
袋を用い、このシームレス布製袋を既製柱の先端部に簡
易なバンドで容易に装着し得るようにした全く新しい技
術を提供するものである。
The bag-equipped pile according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems, and in particular, a tubular seamless cloth bag having a small diameter at both ends with respect to the central part is used. By using this seamless cloth bag, it is possible to easily attach the seamless cloth bag to the tip of a ready-made column with a simple band.

【0007】[0007]

【課題を解決するための手段】本発明に係る袋体付杭
は、前述の従来の問題点を根本的に改善した発明であっ
て、その第1発明の要旨は、中央部の径に対してその両
端部の径が小さい筒状のシームレス布製袋を、既製杭の
先端部外周面に被せると共に該シームレス布製袋の両端
部をバンドを介して既製杭に結束して構成したことを特
徴とする袋体付杭である。
The bag-equipped pile according to the present invention is an invention that has fundamentally improved the above-mentioned conventional problems, and the gist of the first invention is that the diameter of the central portion is different from that of the central portion. A tubular seamless cloth bag having a small diameter at both ends thereof is formed by covering the outer peripheral surface of the tip portion of the ready-made pile and binding both ends of the seamless cloth bag to the ready-made pile via bands. It is a peg with a bag.

【0008】本願の第2発明の要旨は、前記既製杭の外
径に対する前記シームレス布製袋の両端部の径が+0〜
100mm、該シームレス布製袋の中央部の径が+10
0〜600mmであることを特徴とする第1発明の袋体
付杭である。
The gist of the second invention of the present application is that the diameter of both ends of the seamless cloth bag is +0 to the outer diameter of the ready-made pile.
100 mm, the diameter of the central part of the seamless cloth bag is +10
It is a pile with a bag body of the 1st invention characterized by being 0-600 mm.

【0009】[0009]

【作用】本願の第1発明に於いては、袋体を接結部の存
在しないシームレス布製袋にしたので、固結性流動物等
を注入して大きく膨張しても、袋体の接結部が破断する
ことがない。また、シームレス布製袋の両端部の径を中
央部の径よりも小さくしたので、このシームレス布製袋
を既製杭の先端部外周面に被せた際には、既製杭をシー
ムレス布製袋の両端部との間に遊びが少ないので、シー
ムレス布製袋の両端部にタック等を設けることなく、そ
のままこの両端部を既製杭に結束することが出来る。
In the first invention of the present application, since the bag body is made of a seamless cloth bag having no binding portion, the bag body is bound even when the solidifying fluid or the like is injected and greatly expanded. The part does not break. Further, since the diameter of both ends of the seamless cloth bag is made smaller than the diameter of the central portion, when the seamless cloth bag is covered on the outer peripheral surface of the end portion of the ready-made pile, the ready-made pile and the both ends of the seamless cloth bag are Since there is little play between the two, it is possible to bind both ends of the seamless cloth bag directly to the ready-made piles without providing tacks or the like at both ends.

【0010】更に、シームレス布製袋に固結性流動物を
注入してシームレス布製袋が膨張しても、この膨張圧力
はシームレス布製袋の両端部にはそれ程かからないの
で、シームレス布製袋の膨張につれて、その両端部を結
束したバンドに、これをめくり上げるような大きな力が
作用することはない。従って、シームレス布製袋の両端
部を比較的簡易なバンドで容易に結束することが出来
る。かつシームレス布製袋が大きく膨張しても、このシ
ームレス布製袋がバンドの突起部に接触して破損される
ことがない。そのために、シームレス布製袋に固結性流
動物を高い圧力で充填してシームレス布製袋を大きく膨
張させることが出来、これによって杭の拡大球根部を最
大限に大きくして杭の支持力を大きくすることが出来
る。
Further, even if the seamless cloth bag is inflated by injecting the solidifying fluid into the seamless cloth bag, the expansion pressure is not so much at both ends of the seamless cloth bag. Therefore, as the seamless cloth bag expands, A large force that flips this up does not act on the band that binds both ends. Therefore, both ends of the seamless cloth bag can be easily bound with a relatively simple band. Moreover, even if the seamless cloth bag greatly expands, the seamless cloth bag does not come into contact with the protruding portion of the band and be damaged. Therefore, the seamless cloth bag can be greatly expanded by filling the seamless cloth bag with the solidified fluid at a high pressure, which maximizes the expanded bulb portion of the pile and increases the bearing capacity of the pile. You can do it.

【0011】本願の第2発明では、前述の如く、既製杭
の外径に対するシームレス布製袋の両端部の径を+0〜
100mmにしたので、このシームレス布製袋を既製杭
の周りに被せた際に、シームレス布製袋の両端部と既製
杭との間に形成される隙間がほとんど少ない。従って、
この両端部にタック等を設ける必要がなく、そのまま該
両端部をバンドで既製杭に結束することが出来る。更
に、シームレス布製袋の中央部の径を既製杭の径よりも
+100〜600mmにしたので、固結性流動物を充填
することによりこのシームレス布製袋の中央部を既製杭
の径よりも著しく大きい径にすることが出来、これによ
って、杭の支持力を著しく大きくすることが出来る。
In the second invention of the present application, as described above, the diameter of both ends of the seamless cloth bag is +0 to the outer diameter of the ready-made pile.
Since the thickness is 100 mm, when the seamless cloth bag is covered around the ready-made pile, there is almost no gap formed between both ends of the seamless cloth bag and the ready-made pile. Therefore,
It is not necessary to provide tacks or the like on the both ends, and the both ends can be bound to the ready-made piles with bands as they are. Further, since the diameter of the central portion of the seamless cloth bag is set to +100 to 600 mm larger than the diameter of the ready-made pile, the central portion of the seamless cloth bag is remarkably larger than the diameter of the ready-made pile by filling the solidifying fluid. The diameter can be increased, which can significantly increase the bearing capacity of the pile.

【0012】[0012]

【実施例】図により本発明に係る袋体付杭の一実施例を
具体的に説明すると、図1は本発明に係る袋体付杭の要
部の外観斜視図、図2は図1の袋体付杭の要部の一部縦
断面説明図、図3は本発明に使用されるシームレス布製
袋の外観斜視図、図4はバンドの結束状態を示す要部の
正面図、図5は他例のバンドの結束状態を示す要部の正
面図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pile with a bag body according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of the main part of the pile with a bag body according to the present invention, and FIG. FIG. 3 is a partial longitudinal cross-sectional explanatory view of a main part of the pile with a bag body, FIG. 3 is an external perspective view of a seamless cloth bag used in the present invention, FIG. 4 is a front view of the main part showing a band binding state, and FIG. It is a front view of the principal part which shows the banding state of the band of other examples.

【0013】図1乃至図3に於いて、11は本発明に使
用されるシームレス布製袋であって、このシームレス布
製袋11は、環状織機などを用いて接結部が無く、異径
に織成されたものである。環状織機は、例えば環状に配
置されて互いに平行に延びる縦糸と、縦糸に交差して螺
旋状に延びる横糸を織成して筒状の立体織物を形成させ
るものであって、その筒状立体織物の織口を連続した織
成工程の中で任意に変化できる構造のものである。この
ような環状織機を用いて織られたシームレス布製袋11
は、縦糸が環状に配列され径変化に応じてその環状配列
の直径が変化しており、横糸は縦糸に対し周方向に螺旋
状に織り込まれ、横糸の各一周は前記の直径に応じた周
の長さとなっている。
1 to 3, reference numeral 11 denotes a seamless cloth bag used in the present invention. This seamless cloth bag 11 is woven by a circular loom or the like to have a knotless portion and a different diameter. It was made. An annular loom is, for example, one that weaves warp yarns arranged annularly and extending parallel to each other, and weft yarns that intersect the warp yarns and extend spirally to form a tubular three-dimensional woven fabric. It has a structure in which the mouth can be arbitrarily changed in a continuous weaving process. Seamless cloth bag 11 woven using such an annular loom
The warp yarns are arranged in an annular shape, and the diameter of the annular arrangement changes according to the diameter change. The weft yarns are woven in a spiral shape in the circumferential direction with respect to the warp yarns, and each round of the weft yarns is a circumference corresponding to the above diameter. Has become the length of.

【0014】シームレス布製袋11の両端部11aの外
径D1は、シームレス布製袋11を既製杭12の外周面
に被せる際の作業性と、シームレス布製袋11が固結性
流動物13の注入による膨張の際に、バンド14をめく
り上げる力を軽減することを勘案して、杭外径より+0
〜100mm、更に好ましくは+20〜60mmが適当
である。また、シームレス布製袋11の中央部11bの
外径D2は、既製杭12の鉛直支持力を高める効果を勘
案して、杭外径+100〜600mmが必要であり、好
ましくは杭外径+300〜600mmである。
The outer diameter D1 of both ends 11a of the seamless cloth bag 11 depends on the workability when the seamless cloth bag 11 is put on the outer peripheral surface of the ready-made pile 12 and the injection of the solidified fluid 13 into the seamless cloth bag 11. +0 from the pile outer diameter in consideration of reducing the force to turn up the band 14 when expanding
-100 mm, more preferably + 20-60 mm is suitable. Moreover, the outer diameter D2 of the central portion 11b of the seamless cloth bag 11 needs to be a pile outer diameter +100 to 600 mm, preferably a pile outer diameter +300 to 600 mm, in consideration of the effect of increasing the vertical support force of the ready-made pile 12. Is.

【0015】このように中央部11bの外径D2を大き
くすると、シームレス布製袋11内に注入されて硬化し
た固結製流動物13の径が大きくなり、極めて高い鉛直
支持力を発現することができる。また縮径された両端部
11aの長さL1はバンド14の幅よりも長くすること
が必要である。また、拡径された中央部11bの長さL
2は、既製杭12の摩擦力を向上させる効果を勘案し
て、杭外径の1〜10倍が好ましい。また、両端部11
aから中央部11bに至るテーパー部11cは、シーム
レス布製袋11の強度と脱水性に問題がない範囲で任意
な長さにして良い。
When the outer diameter D2 of the central portion 11b is increased in this way, the diameter of the solidified fluid 13 injected into the seamless cloth bag 11 and cured is increased, and an extremely high vertical supporting force can be exhibited. it can. Further, it is necessary that the length L1 of the both ends 11a having the reduced diameter is made longer than the width of the band 14. Also, the length L of the expanded central portion 11b
Considering the effect of improving the frictional force of the ready-made pile 12, 2 is preferably 1 to 10 times the outer diameter of the pile. In addition, both ends 11
The taper portion 11c extending from a to the central portion 11b may have any length as long as there is no problem with the strength and dehydration of the seamless cloth bag 11.

【0016】シームレス布製袋11の材質は、注入する
固結性流動物13の中の水だけを透過させる脱水効果を
有する点と、強度の点からナイロン,ポリエチレン,ビ
ニロンなどの合成繊維を用いたものが好ましい。このよ
うに固結性流動物13の水を外へ脱水できるシームレス
布製袋11とすると、施工に際してこの既製杭12に装
着したシームレス布製袋11内にセメント系等の固結性
流動物13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物13中の水分が
シームレス布製袋11の表面を通して脱水され、固結性
流動物13は硬化後に緻密で強固な硬化体となる。
As the material of the seamless cloth bag 11, synthetic fibers such as nylon, polyethylene, vinylon, etc. are used from the viewpoint of having a dehydrating effect of permeating only the water in the solidifying fluid 13 to be injected and from the viewpoint of strength. Those are preferable. In this way, when the seamless cloth bag 11 capable of dehydrating the water of the caking fluid 13 to the outside is poured, the caking fluid 13 such as cement is injected into the seamless cloth bag 11 attached to the ready-made pile 12 at the time of construction. Predetermined pressure, for example 6-10kg
The water in the caking fluid 13 is dehydrated through the surface of the seamless cloth bag 11 by the injection pressure of / cm 2 , and the caking fluid 13 becomes a dense and strong cured body after curing.

【0017】このシームレス布製袋11は、既製杭12
の外周面に被せられ、その縮径された両端部11aがバ
ンド14、接着剤、クッション材等の組み合わせで固着
される。両端部11aの内、バンド14を固着する場所
としては、テーパー部11cと両端部11aの際から少
し離れた所が好ましい。両端部11aの際に固着すると
内圧が加わった時に中央部11bの縦糸が伸び、テーパ
ー部11cの袋の膨らみがバンド14をずらそうとす
る。従って所定の内圧で拡径された中央部11bの縦糸
が伸びる量だけ離れた所に固着するのが良い。
This seamless cloth bag 11 is made up of ready-made piles 12.
Both ends 11a of which the outer peripheral surface is covered and whose diameter is reduced are fixed by a combination of a band 14, an adhesive, a cushion material and the like. Of the both end portions 11a, the place where the band 14 is fixed is preferably a place slightly apart from the taper portion 11c and the both end portions 11a. When fixed at both ends 11a, the warp yarns in the central portion 11b extend when internal pressure is applied, and the bulge of the bag of the taper portion 11c tends to shift the band 14. Therefore, it is preferable that the warp threads of the central portion 11b, which are expanded in diameter by a predetermined internal pressure, be fixed at a position separated by an amount of extension.

【0018】シームレス布製袋11を装着する際に使用
されるバンド14として、金具を用いる場合には、図4
に示すように、2つ割の鋼製バンド14aをシームレス
布製袋11の両側から挟んでボルト15等により手作業
によって締め付けるだけで良い。或いはワイヤーロープ
バンド14bを用いる場合は、図5に示すように、従来
よりも細い直径のものを用いて従来よりも低い力で締め
付け、ワイヤーグリップ16で止めるだけで良い。
When a metal fitting is used as the band 14 used when the seamless cloth bag 11 is attached, as shown in FIG.
As shown in FIG. 7, it is sufficient to sandwich the steel band 14a in two parts from both sides of the seamless cloth bag 11 and tighten it by hand with bolts 15 or the like. Alternatively, when the wire rope band 14b is used, as shown in FIG. 5, it is sufficient to use a wire having a diameter smaller than that of the conventional one, to tighten it with a force lower than that of the conventional one, and to stop it with the wire grip 16.

【0019】また、図2に示すように、予め装着部分の
シームレス布製袋11と杭外周面にクッション材17を
配すると、固結性流動物13の漏れに対して安全であ
る。前記クッション材17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シームレス布製袋11と既製杭
12の外周面との空隙が塞がるような材質のものであれ
ば良い。また、クッション材17の巾はバンド幅より広
いものであることが好ましい。
Further, as shown in FIG. 2, if a cushion material 17 is provided in advance on the seamless cloth bag 11 and the pile outer peripheral surface of the mounting portion, it is safe against leakage of the caking fluid 13. The material of the cushion material 17 is polyvinyl chloride,
It may be made of foam such as polyethylene or polyurethane, or rubber, or any other material that can close the gap between the seamless cloth bag 11 and the outer peripheral surface of the ready-made pile 12 after the band is fastened. Further, the width of the cushion material 17 is preferably wider than the band width.

【0020】また、本発明に使用される既製杭12は、
シームレス布製袋11内に固結製流動物13を注入する
ための注入管18を有している。この注入管18は図2
に示す如く、既製杭12の周壁の肉厚部に設けられて
も、また既製杭12の中空部や外周面に設けられても良
い。前述の図2は、本発明の袋体付杭のシームレス布製
袋11内に注入管18を通して固結性流動物13を圧入
したときの外観図である。このように取り付けられたシ
ームレス布製袋11は従来例の図6のシームレス袋体2
と比較すると明らかなように、両端部11aでは外径D
1にほぼ応じた周の長さで横糸が織り込まれているた
め、この部分では、シームレス布製袋11が膨張しよう
とする力を横糸が押さえ、シームレス布製袋11による
バンド14をめくり上げる力は作用せず、またシームレ
ス布製袋11の一部がバンド14の突起部に接触するこ
ともない。
The ready-made pile 12 used in the present invention is
An injection pipe 18 for injecting the solidified fluid 13 is provided in the seamless cloth bag 11. This injection tube 18 is shown in FIG.
As shown in FIG. 3, it may be provided in the thick portion of the peripheral wall of the ready-made pile 12, or may be provided in the hollow portion or the outer peripheral surface of the ready-made pile 12. FIG. 2 described above is an external view when the caking fluid 13 is press-fitted into the seamless cloth bag 11 of the pile with the bag body of the present invention through the injection pipe 18. The seamless cloth bag 11 thus attached is the seamless bag body 2 shown in FIG.
As is clear from comparison with the outer diameter D at both ends 11a.
Since the weft yarn is woven in the circumference length substantially corresponding to 1, in this portion, the weft yarn suppresses the force of the seamless cloth bag 11 trying to expand, and the force of turning up the band 14 by the seamless cloth bag 11 acts. Moreover, a part of the seamless cloth bag 11 does not come into contact with the protruding portion of the band 14.

【0021】[0021]

【実施例1】本実施例に用いた既製杭12は、図2に示
した中空構造のものである。この既製杭12の下部に
は、杭沈設時にシームレス布製袋11を保護するための
フリクションカッター19を設けた。既製杭の外径は6
00mm、杭長は5mである。また、既製杭12の周壁
の肉厚部には、注入管18として直径1.5inchの
鉄管を設け、この鉄管を通してシームレス布製袋11内
に固結性流動物13ができるように鉄管の先端を分岐さ
せシームレス布製袋11と連通させた。この既製杭12
にシームレス布製袋11を被せ、両端部11aをバンド
で固着した。シームレス布製袋11は、図3に示した構
造のものであり、両端部11aが外径650mm、中央
部11bは外径950mmの径で接結部を有しないよう
に異径に織成したもので、長さは縮径した両端部11a
が300mm、テーパー部11cが150mm、拡径し
た中央部11bが2,500mmとした。また材質はナ
イロン66とした。
Example 1 The ready-made pile 12 used in this example has a hollow structure shown in FIG. A friction cutter 19 for protecting the seamless cloth bag 11 when the pile is sunk is provided below the ready-made pile 12. Outer diameter of ready-made pile is 6
The length is 00 mm and the pile length is 5 m. Further, an iron pipe having a diameter of 1.5 inch is provided as the injection pipe 18 in the thick wall portion of the peripheral wall of the ready-made pile 12, and the tip of the iron pipe is formed so that the solidified fluid 13 can be formed in the seamless cloth bag 11 through the iron pipe. It branched and was made to communicate with the seamless cloth bag 11. This ready-made pile 12
A seamless cloth bag 11 was put on the both ends, and both end portions 11a were fixed by bands. The seamless cloth bag 11 has the structure shown in FIG. 3, and has both ends 11a having an outer diameter of 650 mm and a central part 11b having an outer diameter of 950 mm and having different diameters so as not to have a connecting portion. , Both ends 11a with reduced diameter
Was 300 mm, the tapered portion 11c was 150 mm, and the expanded central portion 11b was 2,500 mm. The material is nylon 66.

【0022】シームレス布製袋11は、既製杭12の外
周面の装着部分に幅150mm、厚さ10mmのポリウ
レタンの発泡体をクッション材17として巻きつけた後
にセットし、この上から6mmのワイヤーロープ14b
を巻き付けて1000kgの引っ張り力で締め付け、ワ
イヤーグリップ16で固定した。
The seamless cloth bag 11 is set after the polyurethane foam having a width of 150 mm and a thickness of 10 mm is wound around the mounting portion on the outer peripheral surface of the ready-made pile 12 as the cushion material 17, and the wire rope 14b having a length of 6 mm is provided thereon.
Was wrapped around, tightened with a pulling force of 1000 kg, and fixed with a wire grip 16.

【0023】[0023]

【比較例】このようにして、本発明の袋体付杭を試験体
1として地上でシームレス布製袋11内にセメントミル
クを注入し、耐圧試験を実施した。また、前記試験体1
に対して、袋体の材質、強度、全体の長さは、試験体1
と同じであるが、前述の図6の従来例のように全体の外
径が950mmのストレートに織成され且つ接結部を有
しないシームレス袋体2を、両端部にタック3を取って
650mmに縮径して、既製杭1に取り付けた杭を試験
体2として、耐圧試験を実施した。
Comparative Example In this way, cement milk was injected into the seamless cloth bag 11 on the ground using the pile with bag body of the present invention as the test body 1 to perform the pressure resistance test. Also, the test body 1
On the other hand, the material, strength and overall length of the bag are
Same as the above, but a seamless bag body 2 woven in a straight shape with an overall outer diameter of 950 mm and having no joints as in the conventional example of FIG. The pressure resistance test was performed using the pile, which was reduced in diameter and attached to the ready-made pile 1, as the test body 2.

【0024】その結果、試験体1は最大12kg/cm
2 でシームレス布製袋11の拡径した中央部11bが破
断し、その両端部11aの破損が認められなかったのに
対し、試験体2は注入圧力6kg/cm2 で、図6の状
態となり、ワイヤーロープ製のバンド4をめくり上げる
力が作用し、取り付け部のバンド4がめくれてこの部分
からセメントミルクが漏れ始め、最大6.5kg/cm
2 でバンド4が外れて試験を終了した。
As a result, the test body 1 has a maximum of 12 kg / cm.
At 2 , the expanded central part 11b of the seamless cloth bag 11 was broken, and no damage was found at both end parts 11a, whereas the test body 2 was in the state of FIG. 6 at an injection pressure of 6 kg / cm 2 . The force to turn up the wire rope band 4 acts, the band 4 at the attachment part flips up, and cement milk begins to leak from this part, up to 6.5 kg / cm
The band 4 came off at 2 and the test was completed.

【0025】[0025]

【発明の効果】本発明に係る袋体付杭は、前述のような
構造と作用とを有するので、次のような多大な効果を有
している。
Since the pile with bag according to the present invention has the structure and operation as described above, it has the following great effects.

【0026】シームレス布製袋が使用されるので、縫着
等による接結部がなく、従って袋体が接結部から破裂す
る危険性がない。(2)そのために袋体の強度を充分に
発揮することが出来、多量の固結性流動物を有効に注入
することが出来る。(3)固結性流動物の注入により袋
体が大きく膨張しても、両端部を結束したバンドがめく
り上げる力が作用しないので、バンドの必要強度や締め
付け力を著しく低減できる。(4)袋体が膨張してもバ
ンドの突起部に接触することがないため、袋体が破損す
る危険性が全くない。(5)それ故に袋体を高い圧力で
充分に横方向に膨張でき、より高い杭の支持力が得られ
る。
Since the seamless cloth bag is used, there is no connecting part due to sewing or the like, and therefore there is no risk of the bag body bursting from the connecting part. (2) Therefore, the strength of the bag can be sufficiently exerted, and a large amount of the caking fluid can be effectively injected. (3) Even if the bag body is largely expanded by the injection of the solidifying fluid, the force of flipping up the band that binds the both ends does not act, so that the required strength of the band and the tightening force can be significantly reduced. (4) Even if the bag body expands, it does not come into contact with the protruding portion of the band, so that there is no risk of damaging the bag body at all. (5) Therefore, the bag can be sufficiently expanded in the lateral direction with a high pressure, and a higher pile supporting force can be obtained.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る袋体付杭の要部の外観斜視図であ
る。
FIG. 1 is an external perspective view of a main part of a bag-equipped pile according to the present invention.

【図2】図1の袋体付杭の要部の一部縦断面説明図であ
る。
FIG. 2 is a partial vertical cross-sectional explanatory view of a main part of the pile with bag shown in FIG.

【図3】本発明に使用されるシームレス布製袋の外観斜
視図である。
FIG. 3 is an external perspective view of a seamless cloth bag used in the present invention.

【図4】バンドの結束状態を示す要部の正面図である。FIG. 4 is a front view of a main part showing a band binding state.

【図5】他例のバンドの結束状態を示す要部の正面図で
ある。
FIG. 5 is a front view of an essential part showing a banded state of another example of the band.

【図6】従来例の袋体付杭を説明する外観斜視図であ
る。
FIG. 6 is an external perspective view illustrating a conventional pile with bag body.

【符号の説明】[Explanation of symbols]

1 既製杭 2 シーム
レス袋体 3 タック 4 バンド 11 シームレス布製袋 11a 両端部 12 既製杭 12b 中央部 12c テーパー部 13 固結性
流動物 14 バンド 14a ワイヤ
ーロープ 15 ボルト 16 ワイヤ
ーグリップ 17 クッション材 18 流入管 19 フリクションカッター
1 Ready-made pile 2 Seamless bag 3 Tuck 4 Band 11 Seamless cloth bag 11a Both ends 12 Ready-made pile 12b Central part 12c Tapered part 13 Solidified fluid 14 Band 14a Wire rope 15 Bolt 16 Wire grip 17 Cushion material 18 Inflow pipe 19 Friction cutter

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】中央部の径に対してその両端部の径が小さ
い筒状のシームレス布製袋を、既製杭の先端部外周面に
被せると共に該シームレス布製袋の両端部をバンドを介
して既製杭に結束して構成したことを特徴とする袋体付
杭。
1. A tubular seamless cloth bag whose both ends are smaller than the diameter of the central part is put on the outer peripheral surface of the tip end of the ready-made pile, and both ends of the seamless cloth bag are ready-made via bands. A peg with a bag body, which is constructed by bundling the pile.
【請求項2】前記既製杭の外径に対する前記シームレス
布製袋の両端部の径が+0〜100mm、該シームレス
布製袋の中央部の径が+100〜600mmであること
を特徴とする請求項1の袋体付杭。
2. The diameter of both ends of the seamless cloth bag with respect to the outer diameter of the ready-made pile is +0 to 100 mm, and the diameter of the central portion of the seamless cloth bag is +100 to 600 mm. Pile with bag.
JP04169895A 1995-03-01 1995-03-01 Pile with bag Expired - Lifetime JP3653298B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04169895A JP3653298B2 (en) 1995-03-01 1995-03-01 Pile with bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04169895A JP3653298B2 (en) 1995-03-01 1995-03-01 Pile with bag

Publications (2)

Publication Number Publication Date
JPH08239833A true JPH08239833A (en) 1996-09-17
JP3653298B2 JP3653298B2 (en) 2005-05-25

Family

ID=12615643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04169895A Expired - Lifetime JP3653298B2 (en) 1995-03-01 1995-03-01 Pile with bag

Country Status (1)

Country Link
JP (1) JP3653298B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030645A (en) * 2000-07-14 2002-01-31 Ashimori Ind Co Ltd Tubular bag and bag having core
CN103114578A (en) * 2013-02-06 2013-05-22 上海市建工设计研究院有限公司 Grouting molding pedestal pile and construction method thereof and pedestal expanding device
CN104452741A (en) * 2014-11-30 2015-03-25 中铁二十局集团第一工程有限公司 Technique for constructing reinforcing cloth bag grouting pile of coastal soft soil foundation
JP2019078054A (en) * 2017-10-24 2019-05-23 戸田建設株式会社 Injection outer pipe and chemical feeding method
JP2019078053A (en) * 2017-10-24 2019-05-23 戸田建設株式会社 Injection outer pipe and chemical feeding method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002030645A (en) * 2000-07-14 2002-01-31 Ashimori Ind Co Ltd Tubular bag and bag having core
CN103114578A (en) * 2013-02-06 2013-05-22 上海市建工设计研究院有限公司 Grouting molding pedestal pile and construction method thereof and pedestal expanding device
CN103114578B (en) * 2013-02-06 2015-07-01 上海市建工设计研究院有限公司 Grouting molding pedestal pile and construction method thereof and pedestal expanding device
CN104452741A (en) * 2014-11-30 2015-03-25 中铁二十局集团第一工程有限公司 Technique for constructing reinforcing cloth bag grouting pile of coastal soft soil foundation
JP2019078054A (en) * 2017-10-24 2019-05-23 戸田建設株式会社 Injection outer pipe and chemical feeding method
JP2019078053A (en) * 2017-10-24 2019-05-23 戸田建設株式会社 Injection outer pipe and chemical feeding method

Also Published As

Publication number Publication date
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