JPS6115209B2 - - Google Patents
Info
- Publication number
- JPS6115209B2 JPS6115209B2 JP8257578A JP8257578A JPS6115209B2 JP S6115209 B2 JPS6115209 B2 JP S6115209B2 JP 8257578 A JP8257578 A JP 8257578A JP 8257578 A JP8257578 A JP 8257578A JP S6115209 B2 JPS6115209 B2 JP S6115209B2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- conduit
- main body
- soil
- friction
- 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
- 239000002689 soil Substances 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 10
- 239000011800 void material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 239000000203 mixture Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
【発明の詳細な説明】
この発明は既製基礎くいの施工方法、特に中掘
工法によつて現場に沈設する既製基礎くいおよび
その施工方法に関し、その目的は施工過程におい
てくいと土壌との摩擦を減少することにより沈設
を容易とし、沈設後は摩擦力の低下を防止し、む
しろ向上させる施工方法を提供することにある。[Detailed Description of the Invention] The present invention relates to a method for constructing ready-made foundation piles, and in particular to a method for constructing ready-made foundation piles that is sunk in a site by a hollow digging method, and its purpose is to reduce friction between the pile and the soil during the construction process. The object of the present invention is to provide a construction method that facilitates the installation by reducing the frictional force, and prevents the reduction of the frictional force after the installation, and even improves the frictional force.
無振動、無騒音による基礎くいの施工方法とし
て既製くいの中掘工法がある。ところでその中掘
工法ではくいを埋設する際に、既製くいの中空部
にオーガーを挿入していく先端部土砂を排出し、
かつ前記既製くいの先端部にはくい本体の外径よ
り大きい径を有するフリクシヨンカツターを設け
ていく沈設時の摩擦抵抗を小さくしている。した
がつてくいの周囲には空隙層を生ずる。そしてこ
の空隙層はくいの沈設施工終了後、そのままでは
好ましくない。すなわち中掘工法はくい容積に相
当する地盤を排土するため、打撃工法のようにく
い周辺地盤を締固めることはなく、また地盤が回
復して空隙層を埋めるには相当の日時が必要であ
る。そのため鉛直荷重に対してくい周面に発生す
る正の摩擦力が小さく鉛直荷重はその大半がくい
先端地盤に到達し、鉛直耐力は比較的小さく、不
経済な設計となる。 A method for constructing foundation piles without vibration or noise is the hollow construction method using ready-made piles. By the way, when burying piles in the hollow excavation method, an auger is inserted into the hollow part of the ready-made pile, and the soil is discharged from the tip.
Furthermore, a friction cutter having a diameter larger than the outer diameter of the pile body is provided at the tip of the ready-made pile, thereby reducing frictional resistance during sinking. Therefore, a void layer is formed around the stiffness. It is not preferable to leave this void layer as it is after the pile installation is completed. In other words, since the medium excavation method removes the ground equivalent to the volume of the pile, it does not compact the difficult surrounding ground like the percussion method, and it takes a considerable amount of time for the ground to recover and fill the void layer. . Therefore, the positive frictional force generated on the circumferential surface of the pile against the vertical load is small, and most of the vertical load reaches the ground at the tip of the pile, resulting in a relatively small vertical yield strength, resulting in an uneconomical design.
この発明は前記従来の問題点を解消すべく開発
した基礎くいおよびその施工法で以下その詳細を
実施例によつて説明する。 The present invention is a foundation pile and its construction method developed to solve the above-mentioned conventional problems, and the details thereof will be explained below using examples.
中空くいの本体1の先端部にはフリクシヨンカ
ツター部2が前記本体1より大径に形成してあ
る。また本体1に沿つて導管3がバンド4によつ
て取付けてある。この導管3の先端には、フリク
シヨンカツター部2のすぐ上部のフリクシヨンカ
ツターとくい本体との間の段部に本体1を囲む導
管リング5が設けてある。そして導管リング5に
は多数の上向きのグラウト材等に噴出口6が穿設
してある。 A friction cutter part 2 is formed at the tip of the hollow pile body 1 to have a diameter larger than that of the body 1. A conduit 3 is also attached along the body 1 by a band 4. At the tip of this conduit 3, a conduit ring 5 surrounding the main body 1 is provided at a stepped portion immediately above the friction cutter portion 2 between the friction cutter and the stake body. The conduit ring 5 is provided with a large number of upwardly directed spout ports 6 for grouting material, etc.
施工に際してはくいを所要の地盤に建て、その
中部にオーガー(図示せず)を挿入し、くい先端
下方の土壌を掘削することにより、くいの自重に
より、必要によりさらにくいを加圧して所要深さ
まで沈設させる。その沈設作業中に前記導管3、
導管リング5を通じ、噴出口6より空気、水ある
いは遅硬性のグラウト材を噴出させ、本体1の全
周面と土壌との摩擦抵抗を完全にカツトする。く
いの沈設作業中空気、水を噴出させた場合はくい
の沈設後改めて噴出口6よりグラウト材を注入
し、くいと土壌との空隙層Aに充填する。充填さ
れたグラウト材は硬化してくいと土壌とを一体化
し、くいの支持力を増す。 During construction, piles are erected on the required ground, an auger (not shown) is inserted into the middle of the pile, and the soil below the tip of the pile is excavated. Let it sink to the top. During the sinking operation, the conduit 3,
Air, water, or slow-hardening grout is jetted out from the spout 6 through the conduit ring 5 to completely cut off the frictional resistance between the entire circumferential surface of the main body 1 and the soil. If air or water is blown out during the pile-sinking operation, grout is injected again from the spout 6 after the pile is set, and fills the void layer A between the pile and the soil. When the filled grout material hardens, it becomes integrated with the soil, increasing the support capacity of the piles.
なおグラウト材としてはセメントミルク、水ガ
ラスあるいはそれらの混合物、その他の地盤硬化
材が使用される。 As the grouting material, cement milk, water glass, a mixture thereof, and other ground hardening materials are used.
この発明は以上の構成からなり、くいの沈設作
業中においてくい外周面にくいに沿つてフリクシ
ヨンカツター部より上方に向け空気、水あるいは
未だかたまらないグラウト材を噴出させることに
よりくいと土壌との摩擦を切り、くいの沈設を容
易とすることができる。くいの沈設後においては
くいと土壌との間の空隙層にグラウト材が充満さ
れそれが硬化することによつてくいと土壌が一体
化されることになり、くいの鉛直耐力が大きくな
る。またグラウト材の量はフリクシヨンカツター
部とくい本体との間の前記空隙層を満たす程度で
よいのでプレボーリングセメントミルク工法より
も少量で済み、経済的であり、かつ泥水による二
次公害の発生がない。 This invention has the above-mentioned structure, and during the work of sinking a pile, air, water, or unhardened grout is spouted upward from the friction cutter part along the outer circumferential surface of the pile, thereby separating the pile from the soil. It can reduce friction and make it easier to sink piles. After the pile is sunk, the void layer between the pile and the soil is filled with grout, which hardens and becomes integrated with the soil, increasing the vertical bearing capacity of the pile. In addition, the amount of grout material is sufficient to fill the void layer between the friction cutter part and the pile body, so it requires a smaller amount than the pre-boring cement milk method, which is economical and reduces secondary pollution caused by muddy water. No outbreak.
なおグラウト材の導管はくいに沿つて取付けら
れるので導管は一本ですみ従来のくいをそのまま
使用でき、また導管はくいの外周面に設けられて
いるから中掘工法のオーガーの挿入も容易であ
る。 Furthermore, since the grout conduit is installed along the pile, only one conduit is required and the conventional pile can be used as is, and since the conduit is provided on the outer surface of the pile, it is easy to insert the auger of the hollow digging method. be.
第1図はこの発明において使用するくいの斜視
図、第2図は施工状態の断面図である。
1……くい本体、2……フリクシヨンカツター
部、3……導管、4……バンド、5……導管リン
グ、6……噴出口、A……空隙層。
FIG. 1 is a perspective view of a pile used in the present invention, and FIG. 2 is a cross-sectional view of the pile used in the construction state. DESCRIPTION OF SYMBOLS 1...Piece main body, 2...Friction cutter part, 3... Conduit, 4... Band, 5... Conduit ring, 6... Spout, A... Void layer.
Claims (1)
フリクシヨンカツター部を設け、且つくい本体に
沿つて、導管を取付けるとともに、この導管の先
端にくい本体を囲む多数の上向きの噴出口が穿設
してある導管リングを前記フリクシヨンカツター
部とくい本体との間の段部に連設して設けてなる
基礎くい。 2 最下部を既設中空くいの先端部にくい本体よ
り大径のフリクシヨンカツター部を設け、且つく
い本体に沿つて、導管を取付けるとともに、この
導管の先端にくい本体を囲む多数の上向きの噴出
口が穿設してある導管リングを前記フリクシヨン
カツター部とくい本体との間の段部に連設して設
けてなる既製中空くいとして導管を沿わせた中空
くいを所要深さまで前記フリクシヨンカツター部
により、くいと土壌との摩擦を切り、中掘掘削沈
設しつつ、あるいは沈設後に前記導管リングの噴
出口から硬化性グラウト材をくいと土壌との空隙
に噴出充填して、くいと土壌とを一体化させるこ
とからなる基礎くいの施工方法。[Scope of Claims] 1. A friction cutter portion having a larger diameter than the main body of the ready-made hollow pile is provided, and a conduit is attached along the main body of the hollow pile, and a large number of upwardly facing parts surrounding the main body of the conduit are provided. A foundation pile comprising a conduit ring having a spout formed therein and connected to a stepped portion between the friction cutter portion and the pile body. 2 At the lowest part, a friction cutter part with a larger diameter than the main body of the existing hollow pile is installed, and a conduit is installed along the main body of the hollow pile, and a large number of upward spouting ports are installed around the main body of the conduit. As a ready-made hollow pile, a conduit ring with a perforated pipe is connected to the stepped part between the friction cutter part and the pile body. The cutter part cuts the friction between the pile and the soil, and during the digging and settling of the pile, or after the pile is deposited, hardening grout is sprayed from the spout of the conduit ring and filled into the gap between the pile and the soil. A construction method for foundation piles that consists of integrating them with the soil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8257578A JPS559949A (en) | 1978-07-07 | 1978-07-07 | Installing process for foundation pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8257578A JPS559949A (en) | 1978-07-07 | 1978-07-07 | Installing process for foundation pile |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS559949A JPS559949A (en) | 1980-01-24 |
JPS6115209B2 true JPS6115209B2 (en) | 1986-04-23 |
Family
ID=13778273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8257578A Granted JPS559949A (en) | 1978-07-07 | 1978-07-07 | Installing process for foundation pile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559949A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5664018A (en) * | 1979-10-25 | 1981-06-01 | Tousen Concrete Kogyo Kk | Concrete pile |
JPS5664017A (en) * | 1979-10-25 | 1981-06-01 | Tousen Concrete Kogyo Kk | Open-caisson excavation type pile construction work |
JPH0735654B2 (en) * | 1988-09-09 | 1995-04-19 | 前田製管株式会社 | Method for burying underground piles of general piles |
JP2514598B2 (en) * | 1993-12-21 | 1996-07-10 | 大和基工株式会社 | Pile driving equipment |
KR100980623B1 (en) | 2010-03-30 | 2010-09-07 | 김준홍 | Foundation anchorage and method for anchoraging micro pile using the same |
KR101117293B1 (en) * | 2011-05-03 | 2012-03-20 | 녹우건설(주) | Cement milk injection method for pile construction |
CN103603363B (en) * | 2013-10-31 | 2016-09-28 | 周兆弟 | Cement mixing-filling convex joint pile foundation and manufacturing process |
-
1978
- 1978-07-07 JP JP8257578A patent/JPS559949A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS559949A (en) | 1980-01-24 |
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