JPS5817849B2 - Foundation pile construction method - Google Patents
Foundation pile construction methodInfo
- Publication number
- JPS5817849B2 JPS5817849B2 JP14635676A JP14635676A JPS5817849B2 JP S5817849 B2 JPS5817849 B2 JP S5817849B2 JP 14635676 A JP14635676 A JP 14635676A JP 14635676 A JP14635676 A JP 14635676A JP S5817849 B2 JPS5817849 B2 JP S5817849B2
- Authority
- JP
- Japan
- Prior art keywords
- auger
- steel pipe
- hardened material
- hardening
- construction method
- 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.)
- Expired
Links
Landscapes
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】
この発明は％ｆこ鋼管その他のコンクリート管等の中空
管とソイルコンクリートの合成からなる基礎くいの造成
工法１こ関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing foundation piles consisting of a composite of hollow pipes such as steel pipes or other concrete pipes and soil concrete.
通常鋼管くいはくい打ち機１こよる打ち込み１こよる施
工であり、騒音、振動の問題があり、管内外の腐食の恐
れがある。Normally, steel pipe piles are constructed using one pile driver and one drive, which causes problems with noise and vibration, and there is a risk of corrosion inside and outside the pipe.
以上の問題点を解決する工法１こついて出願人は特開昭
５０−２３０４号公報に示される工法を開発、実用化曇
こ至った。Method 1 to solve the above-mentioned problems The applicant developed a method disclosed in Japanese Patent Application Laid-Open No. 50-2304, which has not yet been put into practical use.
ところで前記工法においても従来例と同様１こ鋼管くい
を削孔に沈設してから打止めのため鋼管くいの打撃をす
る。By the way, in the above construction method, as in the conventional example, one steel pipe pile is sunk into the drilled hole, and then the steel pipe pile is struck for stopping.
そのためくい打ち卿を準備する必要があり、また完全な
無騒音、無振動施工が困難である。Therefore, it is necessary to prepare a pile driver, and it is difficult to perform completely noise-free and vibration-free construction.
この発明は前記の問題点を解決すべく改良したもので、
以下実施例１こよって説明する。This invention is an improvement to solve the above problems.
Example 1 will be explained below.
この工法を実施するに際して使用されるオーガー１は中
空ロッド２の先端昏こオーガーヘッド３が設けられてい
る。An auger 1 used in carrying out this construction method is provided with an auger head 3 having a hollow rod 2 at its end.
オーガーヘッド３は先端１こビット４を有し、続いて螺
旋翼５．攪拌翼６が設けられている。The auger head 3 has a tip 1 bit 4 followed by a helical blade 5. A stirring blade 6 is provided.
そして中空ロッド２は回転駆動装置Ｔによって回転させ
られる。The hollow rod 2 is then rotated by a rotary drive device T.
施工Ｅこ際しては先ず第１図１こ示すよう１こオーガー
ヘッド３の先端より硬化した後の圧縮強度の低い硬化材
料１例えば貧配合セメントミルク等の遅硬性地盤硬化剤
を注入しながら地盤を支持層に到達する所定深度まで掘
削する。In this case, first, as shown in Fig. 1, while injecting a hardened material 1 with low compressive strength after hardening from the tip of the auger head 3, for example, a slow-hardening ground hardening agent such as poorly mixed cement milk. The ground is excavated to a specified depth to reach the supporting layer.
支持層に到達すると硬化した後の圧縮強度の高い硬化材
料例えば富配合セメントミルク等の根固め硬化材料を予
め注入しておく。A hardening material having a high compressive strength after hardening upon reaching the support layer, for example, a hardening hardening material such as rich blended cement milk, is injected in advance.
続いて第２図１こ示すよう１こオーガーヘッド３を回転
しながら引上げ、土壌と硬化剤を混合する。Subsequently, as shown in FIG. 2, the single auger head 3 is pulled up while rotating to mix the soil and hardening agent.
次いで第３図に示すよう１こ未硬化のフィルコンクリー
ト中Ｅこ鋼管８を吊込み回転圧入する。Next, as shown in FIG. 3, a single steel pipe 8 is suspended and rotated and press-fitted into the uncured fill concrete.
次いで第４図に示すよう１こ小径のオーガ、−ヘッド３
′を鋼管８内１こ挿入して回転し、所定深さまで鋼管８
とオーガーヘッド３′を沈下させ１次いでオーガーヘッ
ド３′を鋼管８より先行して挿入し、富配合セメントミ
ルクあるいはコンクリート等の根固め硬化材料９を所要
深さ１例えば１．５Ｄ〜３Ｄ（Ｄはくい径）具体例とし
ては０．５〜１．５ｍ程度の深さ注入し、鋼管８の下端
部を根固めする。Next, as shown in FIG.
’ into the steel pipe 8 and rotate it until the steel pipe 8 reaches the specified depth.
Then, the auger head 3' is lowered, and the auger head 3' is inserted in advance of the steel pipe 8, and the hardening material 9, such as rich blended cement milk or concrete, is poured to the required depth 1, for example, 1.5D to 3D (D Pile diameter) As a specific example, the lower end of the steel pipe 8 is cemented by pouring to a depth of about 0.5 to 1.5 m.
次いで第５図に示すよう１こ鋼管βを残してオーガーヘ
ッド３′を回転しながら引抜き、第６図１こ示すよう１
こ鋼管８内外がソイルコンクリートで満たされた基礎く
いを完成する。Next, as shown in FIG. 5, the auger head 3' is pulled out while rotating, leaving one steel pipe β, and as shown in FIG.
The foundation pile is completed, with the inside and outside of this steel pipe 8 filled with soil concrete.
なお鋼管８内の上部１こついてはソイルコンクリートを
除去してコンクリートを充填して基礎くい上部の耐力を
増大するこさもできる。In addition, if the upper part of the steel pipe 8 is stuck, the soil concrete can be removed and concrete filled to increase the strength of the upper part of the foundation pile.
ところで鋼管８の外周、特１こ少なくともその下部外周
１こは螺旋状の突条１０を形成しておき、鋼管８を沈下
させるとき、その鋼管の沈下を容易とする。By the way, a spiral protrusion 10 is formed on the outer periphery of the steel pipe 8, particularly at least on the lower outer periphery thereof, so that when the steel pipe 8 is to be lowered, it can be easily lowered.
またソイルコンクリートが硬化したときはその付着力Ｅ
こよって鋼管８の支持力を増強することができる。Also, when soil concrete hardens, its adhesive force E
Thus, the supporting force of the steel pipe 8 can be increased.
なおフィルコンクリートを膨張性の・・ものきすればよ
り付着力が増す。Furthermore, if the fill concrete is made of expandable material, the adhesion will increase even more.
ところで掘削時１こ使用する硬化した後の圧縮強度の低
い硬化材料は中空管との付着強度が確保できればよいの
でフィルコンクリートの圧縮強度は３０ｋｇ／ｃＴＬ程
度でよい。By the way, the hardened material used once during excavation, which has a low compressive strength after hardening, only needs to ensure adhesion strength to the hollow pipe, so the compressive strength of the fill concrete may be about 30 kg/cTL.
一方根固め用の硬化しｒコ後の圧縮強度の高い根固め硬
化材料は中空管先端の完全閉鎖と支持地盤の強化が必要
であるのでソイルコンクリートの圧縮強度は１５０ ｋ
ｇ／ｃｙ？ｉ、以上であることが要望される。On the other hand, soil concrete has a compressive strength of 150 k because the hardened material with high compressive strength after hardening requires completely closing the tips of the hollow pipes and strengthening the supporting ground.
g/cy? i, or more is desired.
その配合例は次の通りである。またこの発明とプレポー
リング工法および中掘２ｏり乍法の算定支持力度は次の
通りである。An example of its formulation is as follows. Further, the calculated bearing capacity of this invention, the pre-poling method, and the 2-hole method is as follows.
この発明は以上の構成からなり貧配合で硬化した後の圧
縮強度の低い未硬化のソイルコンクリートは、普通土砂
ｔこ比べて補かに流動性が高い。This invention has the above-mentioned configuration, and the uncured soil concrete, which has a low compressive strength after hardening with a poor mix, has a complementary high fluidity compared to ordinary earth and sand.
したがうて、鋼管の正大抵抗は極めて小さく、同一能力
のオーガー１こ対して、施工時間が短縮され。Therefore, the positive resistance of the steel pipe is extremely small, and the construction time is shortened compared to one auger of the same capacity.
またより大径、長尺のくいも施工できる。It is also possible to construct piles with larger diameters and longer lengths.
また未硬化のソイルコンクリ−白マオーガスクリュー１
こ付着することがないので、土砂のよう１こ地上に排出
されることもない施工性の改善効果は著しく犬きい。In addition, uncured soil concrete - white Maorgas screw 1
Since it does not stick to the ground, it is not discharged onto the ground like earth and sand, and the effect of improving workability is significantly better.
□またこの工法は鉛直お筆び水平方向の支持
力を増大させるため、鋼管径より一廻わり大きく、所要
深度までソイルコンクリートを造成し、これ１こ鋼管を
建込み、その硬化を待って鋼管とその内。□In addition, in this construction method, in order to increase the supporting force in the vertical and horizontal directions, soil concrete is made one size larger than the steel pipe diameter to the required depth, one steel pipe is erected, and after it hardens, the steel pipe is and within.
外のソイルコンクリートの一体化を図るため最初の掘削
時、鋼管の挿入時およびオーガーの引抜時と皆三１こわ
たって充分土壌とセメントミルクを攪拌するので鋼管と
、硬化したソイルコンクリートが充分付着して一体的ｆ
こ合成される。In order to integrate the soil concrete outside, the soil and cement milk are stirred sufficiently during the first excavation, when inserting the steel pipe, and when pulling out the auger, so that the steel pipe and hardened soil concrete adhere well. integral f
This is synthesized.
また完成した合成くいは鋼管の内外にソイルコンクリー
トの硬化層が形成され、鋼管あ防腐効果をもたらすとと
も１こ、大径のくいとなり、特１こ鋼管内部が中実とな
り、しかも圧縮強度の高いソイルコンクリートで根固め
され、鋼管の肉厚が比較的薄くてよく、シかも地盤と密
着して浮上り、沈下が防止され、充分な支持耐力をもた
らすことができる。In addition, the completed synthetic pile has a hardened layer of soil concrete formed on the inside and outside of the steel pipe, which provides a preservative effect to the steel pipe. The steel pipes are reinforced with high soil concrete, and the wall thickness of the steel pipes can be relatively thin, and the pipes float in close contact with the ground, preventing subsidence and providing sufficient support strength.
第１図、第２図、第３図、第４図、第５図および第６図
は施工過程順序の概要を示した断面図である。
１・・・・・・オーガー、２・・・・・・中空ロンド、
３３′・・・・・・オーガーヘッド、４・・・−・ビッ
ト、５・・・・・・螺旋翼、６・・・・・・攪拌翼、７
・・・・・・回転駆動装置、８・・・・・・鋼管２９・
・・・・・硬化材料、１０・・・・・・突条。1, 2, 3, 4, 5, and 6 are sectional views showing an outline of the construction process sequence. 1...Auger, 2...Hollow Rondo,
33'... Auger head, 4... Bit, 5... Spiral blade, 6... Stirring blade, 7
...Rotary drive device, 8... Steel pipe 29.
...Hardened material, 10... Protrusion.
Claims (1)
化材料を注入しながら地盤を所要深さまで掘削し１次い
で地盤土壌と硬化材料を攪拌しなからオーガーを引上げ
１次いで前記硬化材料が未硬化の間に掘削孔内（こ中空
管を吊込み１次いで前記中空管内１こオーガーを挿入回
転して所定深さまで中空管とオーガーを沈下させ、かつ
オーガーを中空管より先行して挿入し、注入した硬化し
た後の圧縮強度の高い根固め硬化材料によって中空管下
端を根固めするとともに中空管内の土壌と硬化材料を攪
拌しなからオーガーを引き抜くことを特徴とする基礎く
いの造成工法。1. Using an auger, the ground is excavated to the required depth while injecting hardened material with low compressive strength after hardening. 1. Next, the auger is pulled up without stirring the ground soil and the hardened material. 1. Next, the hardened material is unhardened. In between, suspend the hollow tube into the borehole, insert an auger into the hollow tube, rotate it, and sink the hollow tube and auger to a predetermined depth, and insert the auger in advance of the hollow tube. , a construction method for foundation piles, which is characterized in that the lower end of the hollow pipe is hardened with a hardened material that has a high compressive strength after being injected, and the auger is pulled out without stirring the soil and hardened material inside the hollow pipe. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14635676A JPS5817849B2 (en) | 1976-12-06 | 1976-12-06 | Foundation pile construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14635676A JPS5817849B2 (en) | 1976-12-06 | 1976-12-06 | Foundation pile construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5370506A JPS5370506A (en) | 1978-06-23 |
| JPS5817849B2 true JPS5817849B2 (en) | 1983-04-09 |
Family
ID=15405851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14635676A Expired JPS5817849B2 (en) | 1976-12-06 | 1976-12-06 | Foundation pile construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817849B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011172165A (en) * | 2010-02-22 | 2011-09-01 | Oki Electric Industry Co Ltd | Echo cancellation apparatus, method and program |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748019A (en) * | 1980-09-01 | 1982-03-19 | Takechi Koumushiyo:Kk | Pile including steel pipe pile |
| JPS57158425A (en) * | 1981-03-26 | 1982-09-30 | Asuku Kenkyusho:Kk | Combined pile |
| JPS57158428A (en) * | 1981-03-26 | 1982-09-30 | Asuku Kenkyusho:Kk | Forming method for combined pile |
| JPS57158424A (en) * | 1981-03-26 | 1982-09-30 | Asuku Kenkyusho:Kk | Combined pile |
| JPS57158429A (en) * | 1981-03-26 | 1982-09-30 | Asuku Kenkyusho:Kk | Forming method for combined pile |
| CN112211040A (en) * | 2020-09-29 | 2021-01-12 | 同济大学 | Composite pile plate structure of track-joining engineering roadbed and construction method |
-
1976
- 1976-12-06 JP JP14635676A patent/JPS5817849B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011172165A (en) * | 2010-02-22 | 2011-09-01 | Oki Electric Industry Co Ltd | Echo cancellation apparatus, method and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5370506A (en) | 1978-06-23 |
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