JPH0561409B2 - - Google Patents
Info
- Publication number
- JPH0561409B2 JPH0561409B2 JP61169200A JP16920086A JPH0561409B2 JP H0561409 B2 JPH0561409 B2 JP H0561409B2 JP 61169200 A JP61169200 A JP 61169200A JP 16920086 A JP16920086 A JP 16920086A JP H0561409 B2 JPH0561409 B2 JP H0561409B2
- Authority
- JP
- Japan
- Prior art keywords
- pile
- wall
- hole
- concrete
- concrete 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims 2
- 238000009835 boiling Methods 0.000 claims 1
- 239000004568 cement Substances 0.000 description 11
- 239000008267 milk Substances 0.000 description 11
- 210000004080 milk Anatomy 0.000 description 11
- 235000013336 milk Nutrition 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000000834 fixative Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 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)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、プレボーリングによるコンクリー
トくいの設置工法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for installing concrete piles by pre-boring.
（従来の技術）
従来プレボーリングによるコンクリートくいの
設置工法においては、くい周固定液として、例え
ば所定量のセメントミルクをくい穴の下部に注入
しておき、くいの挿入によつて、くい穴内壁と、
くい外壁との間に、前記注入セメントミルクを上
昇させるようにしている。(Prior art) In the conventional method of installing concrete piles by pre-boring, a predetermined amount of cement milk, for example, is poured into the lower part of the pile hole as a fixing liquid around the pile, and by inserting the pile, the inner wall of the pile is fixed. and,
The injected cement milk is allowed to rise between the pile and the outer wall.
（発明が解決しようとする課題）
然し乍ら、くいの下端を所定長さに亘つて大径
にしたくいにあつては、くいの上部外径に対し
て、くい穴の上部内径が大きく、くいの上部を不
安定にするおそれがあつた。例えばくい穴上部に
おける間隙は暫々５cm（直径10cm）以上になるこ
とがある。このような場合に、くい穴底から上部
まで、くい周固定液を充填すると、厖大な量のセ
メントミルクを必要とし（くいの中空部にも入る
ので一層大量になる）、施工費の増大と、施工労
力および時間の増大を招くなどの問題点があつ
た。(Problem to be Solved by the Invention) However, when the lower end of the pile is made to have a large diameter over a predetermined length, the upper inner diameter of the hole in the pile is larger than the outer diameter of the upper part of the pile. There was a risk that the upper part would become unstable. For example, the gap at the top of the hole may be more than 5 cm (10 cm in diameter). In such a case, filling the pile circumferential fixative from the bottom to the top of the hole would require a huge amount of cement milk (the amount would be even larger since it would also enter the hollow part of the pile), which would increase construction costs. However, there were problems such as increased construction labor and time.
（課題を解決する為の手段）
然るにこの発明は、くい穴にコンクリートくい
を挿入した後に、くい穴上端内壁と、コンクリー
トくいの外壁との間に、くい周固定液を注入する
ようにして、前記従来の問題点を解決したのであ
る。(Means for Solving the Problems) However, in this invention, after inserting a concrete pile into a pile hole, a pile circumferential fixing liquid is injected between the inner wall at the upper end of the pile hole and the outer wall of the concrete pile, This solves the conventional problems mentioned above.
即ちこの発明は、くいの設置予定地へ、所定の
くい穴を掘削し、このくい穴に、下端部へ所定長
さに亘つて大径部を連設したコンクリートくいを
挿入設置する工法において、コンクリートくいを
挿入後、くい穴内壁又はコンクリートくいの外壁
に案内させながら、支持材により支持されたノズ
ル付の注液管を下降させ、前記ノズルからくい周
固定液を注入しつつ該固定液を前記支持材により
攪拌してコンクリートくいの外側壁と、くい穴内
壁との間隙部へ所定長さに亘つてくい周固定液を
充填し、コンクリートくいを固定することを特徴
としたプレボーリングによるくい設置工法であ
る。前記支持材は、例えば合成樹脂製又は鋼製の
円筒或いは支杆などの枠材を用いる。前記円筒の
外壁には突片が千鳥状に突設してあり、円筒を回
転することによつてセメントミルク又はセメント
ミルク間隙介在液とを混合できるようになつてい
る。 That is, the present invention provides a construction method in which a predetermined pile hole is excavated at a site where the pile is planned to be installed, and a concrete pile having a large diameter section connected to the lower end over a predetermined length is inserted and installed into the hole. After inserting the concrete pile, lower the liquid injection pipe with a nozzle supported by the support material while guiding it to the inner wall of the pile or the outer wall of the concrete pile, and inject the fixing liquid around the pile from the nozzle. A pre-boring pile characterized in that the concrete pile is fixed by filling the gap between the outer wall of the concrete pile and the inner wall of the pile with a fixing liquid over a predetermined length by stirring with the support material. This is an installation method. As the support material, a frame material such as a cylinder or a support rod made of synthetic resin or steel is used, for example. Projections are provided on the outer wall of the cylinder in a staggered manner, and by rotating the cylinder, the cement milk or cement milk interstitial liquid can be mixed.
（作用）
即ちこの発明によれば、くい穴上端部内壁と、
くいの上端部外壁との間に、くい周固定液を注入
するので、くいの上端部はくい穴上端部に安定固
定される。然して、くい周固定液を攪拌しつつ注
入すれば、液の硬化により均質固定材を介在した
ものということができる。(Function) That is, according to the present invention, the inner wall of the upper end of the hole;
Since the pile circumferential fixing liquid is injected between the upper end of the pile and the outer wall, the upper end of the pile is stably fixed to the upper end of the pile hole. However, if the circumferential fixing liquid is injected while stirring, it can be said that a homogeneous fixing material is interposed as the liquid hardens.
（実施例） 次にこの発明の実施例について説明する。(Example) Next, embodiments of this invention will be described.
コンクリートくい１の設置予定地２へ、くい穴
３を掘削し、くい穴３内へ、コンクリートくい１
を挿入し、その下端をくい穴底へ固定する。前記
コンクリートくい１は、下端部へ所定長さに亘つ
て大径部１ａを連設してある。この固定について
は、拡底し、該部へセメントミルクを注入して固
定し、或いはその他の根固め工法又は最終軽打工
法等を用いる。次に鋼管４の下端に注液管５を埋
設した案内環６を嵌挿固定し、前記案内環６の外
側壁には、外壁が、くい穴壁に案内できる複数の
突条７を等間隔に縦設し、前記案内環６の下側に
は注液管５のノズル口８を穿設し、注液管５に
は、前記鋼管４の外壁にはセメントミルクの移送
管９を設ける。 Dig a hole 3 in the planned installation site 2 of concrete pile 1, and insert concrete pile 1 into the hole 3.
and fix its lower end to the bottom of the hole. The concrete pile 1 has a large diameter portion 1a extending over a predetermined length toward the lower end thereof. For this fixation, the bottom is widened and cement milk is injected into the area to fix it, or other methods such as root hardening or final pounding are used. Next, a guide ring 6 with a liquid injection pipe 5 buried therein is inserted and fixed into the lower end of the steel pipe 4, and the outer wall of the guide ring 6 has a plurality of protrusions 7 arranged at equal intervals so as to be able to guide the hole wall. A nozzle port 8 of a liquid injection pipe 5 is provided on the lower side of the guide ring 6, and a cement milk transfer pipe 9 is provided on the outer wall of the steel pipe 4 of the liquid injection pipe 5.
前記鋼管４をコンクリートくい１の上部に嵌挿
しつつ下降し、適度に下降した位置から、前記鋼
管４を回転し、かつ緩徐に上昇しつつ、前記ノズ
ル口８から、前記コンクリートくい１と前記くい
穴３壁との間隙部１０に、セメントミルクを注出
する。このようにすると、セメントミルクは、前
記コンクリートくい１の外壁と、くい穴３の内壁
との間の間隙部１０に順次充填されると共に、鋼
管４を回転しつつ、上下することによつて、前記
間隙部１０へセメントミルクを均等に分布させる
ことができる。 The steel pipe 4 is lowered while being inserted into the upper part of the concrete pile 1, and from the moderately lowered position, the steel pipe 4 is rotated and slowly raised, the concrete pile 1 and the concrete pile are inserted through the nozzle port 8. Cement milk is poured into the gap 10 between the hole 3 and the wall. In this way, the cement milk is sequentially filled into the gap 10 between the outer wall of the concrete pile 1 and the inner wall of the pile hole 3, and by moving the steel pipe 4 up and down while rotating, Cement milk can be evenly distributed in the gap 10.
前記実施例においては、注液管５の支持材に鋼
管４を用いたが、適宜の杆体又は枠体によつて注
液管５を支持してもよいことは勿論である。 In the embodiment described above, the steel pipe 4 was used as the support material for the liquid injection pipe 5, but it goes without saying that the liquid injection pipe 5 may be supported by an appropriate rod or frame.
（発明の効果）
即ちこの発明によれば、プレボーリングによる
コンクリートくいの設置工法において、くい穴へ
くいを挿入した後、その上部外側へセメントミル
クを注入して、くいを保定するので、くいは安定
保持され、確実に支持効果を発揮すると共に、比
較的少量の材料で有効な基礎を造成し得る効果が
ある。(Effect of the invention) That is, according to the present invention, in the method of installing concrete piles by pre-boring, after inserting the pile into the hole, cement milk is injected to the outside of the upper part to hold the pile. It is stably held, provides reliable support, and can create an effective foundation with a relatively small amount of material.
次にくい周固定液は支持材で攪拌するので、均
質固定材ができる効果がある。 Since the next weaker peripheral fixative is stirred by the support material, it has the effect of creating a homogeneous fixative.
また、くい穴壁とコンクリートくい外壁との間
に、くい周固定液を注入するので、間隙部が大き
い場合でも、くい穴がくずれるおそれがなく、く
いを所定位置に保つたまま、くい周固定液を注入
できる効果がある。次に、くいの挿入位置が多少
ずれた場合でも、位置を調節できる効果がある。
更にくいの下端部を大径にしたので、くい挿入時
にくいをくい穴の中心に設置し易く、かつ拡底時
に根固めが確実にできるなどの諸効果がある。 In addition, since the pile circumference fixing liquid is injected between the pile hole wall and the concrete pile outer wall, there is no risk of the pile hole collapsing even if the gap is large, and the pile circumference is fixed while keeping the pile in the specified position. It has the effect of injecting liquid. Secondly, even if the insertion position of the stake is slightly shifted, the position can be adjusted.
Since the lower end of the pile has a large diameter, it is easy to place the pile in the center of the pile hole when inserting the pile, and it is also possible to reliably secure the footing when expanding the bottom.
第１図はこの発明の実施中途における一部断面
図、第２図は同じくこの発明の実施に用いる鋼管
の一部正面図、第３図は同じく下面図、第４図は
同じく一部断面拡大図である。
１……コンクリートくい、１ａ……大径部、３
……くい穴、４……鋼管、５……注液管、８……
ノズル口、１０……間隙部。
Fig. 1 is a partial sectional view of a steel pipe in the middle of implementation of this invention, Fig. 2 is a partial front view of a steel pipe used in the implementation of this invention, Fig. 3 is a bottom view, and Fig. 4 is a partially enlarged cross-sectional view. It is a diagram. 1... Concrete pile, 1a... Large diameter part, 3
...Drilled hole, 4... Steel pipe, 5... Liquid injection pipe, 8...
Nozzle opening, 10... gap portion.
Claims (1)
し、このくい穴に、下端部へ所定長さに亘つて大
径部を連設したコンクリートくいを挿入設置する
工法において、コンクリートくいを挿入後、くい
穴内壁又はコンクリートくいの外壁に案内させな
がら、支持材により支持されたノズル付の注液管
を下降させ、前記ノズルからくい周固定液を注入
しつつ、該固定液を前記支持材により攪拌してコ
ンクリートくいの外側壁と、くい穴内壁との間隙
部へ、所定長さに亘つてくい周固定液を充填し、
コンクリートくいを固定することを特徴としたプ
レボリーングによるくい設置工法。 ２ 支持材は円筒とした特許請求の範囲第１項記
載のプレボーリングによるくい設置工法。[Scope of Claims] 1. A construction method in which a specified pile hole is excavated at the site where the pile is planned to be installed, and a concrete pile with a large diameter section connected to the lower end over a specified length is inserted into the hole. After inserting the concrete pile, a liquid injection pipe with a nozzle supported by a support material is lowered while being guided by the inner wall of the pile or the outer wall of the concrete pile, and while injecting a fixing liquid around the pile from the nozzle, Stirring the fixing solution with the support material and filling the gap between the outer wall of the concrete pile and the inner wall of the concrete pile with the fixing solution over a predetermined length;
A pile installation method using pre-boiling, which is characterized by fixing concrete piles. 2. The pile installation method by pre-boring as set forth in claim 1, wherein the support material is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16920086A JPS6327617A (en) | 1986-07-18 | 1986-07-18 | Setting work of pile by preboring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16920086A JPS6327617A (en) | 1986-07-18 | 1986-07-18 | Setting work of pile by preboring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6327617A JPS6327617A (en) | 1988-02-05 |
| JPH0561409B2 true JPH0561409B2 (en) | 1993-09-06 |
Family
ID=15882063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16920086A Granted JPS6327617A (en) | 1986-07-18 | 1986-07-18 | Setting work of pile by preboring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6327617A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4604698B2 (en) * | 2004-12-16 | 2011-01-05 | Ｊｆｅスチール株式会社 | Screwed pile and its construction method |
| JP6006110B2 (en) * | 2012-12-26 | 2016-10-12 | 鹿島建設株式会社 | Foundation pile construction method |
| CN106522210B (en) * | 2016-11-09 | 2018-12-18 | 中交路桥华东工程有限公司 | A kind of naked rock geology stress steel-pipe pile stake bottom anchoring structure |
| JP2018135683A (en) * | 2017-02-21 | 2018-08-30 | 株式会社三誠 | Ground improvement device and ground improvement method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57133920A (en) * | 1981-02-12 | 1982-08-18 | Takechi Koumushiyo:Kk | Method and apparatus for strengthening horizontal bearing force of pile |
-
1986
- 1986-07-18 JP JP16920086A patent/JPS6327617A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57133920A (en) * | 1981-02-12 | 1982-08-18 | Takechi Koumushiyo:Kk | Method and apparatus for strengthening horizontal bearing force of pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6327617A (en) | 1988-02-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |