JPH10306441A - Steel-pipe pile cement-milk foot-protection pipe jacking with inner excavation system and auger used for the same - Google Patents
Steel-pipe pile cement-milk foot-protection pipe jacking with inner excavation system and auger used for the sameInfo
- Publication number
- JPH10306441A JPH10306441A JP11286097A JP11286097A JPH10306441A JP H10306441 A JPH10306441 A JP H10306441A JP 11286097 A JP11286097 A JP 11286097A JP 11286097 A JP11286097 A JP 11286097A JP H10306441 A JPH10306441 A JP H10306441A
- Authority
- JP
- Japan
- Prior art keywords
- pipe pile
- auger
- steel pipe
- steel
- expansion
- 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
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼管杭セメントミ
ルク根固め中掘工法と、この工法に使用するオーガーに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of excavating a steel pipe pile cement milk for solidifying soil and an auger used in the method.
【０００２】[0002]
【従来の技術】従来、鋼管杭を使用する中掘工法に関す
る先行文献は、（１）特開平５−２４７９３６号の杭の
中掘拡底工法、（２）特開平４−３０２６１６号の場所
打ち杭の破砕ならびに鉄筋かごの撤去方法、等がある。
この発明の構成は（１）の発明が、オーガーを既製杭
（鋼管杭等）の中空孔に挿通し、既製杭とほぼ同径の掘
削孔を開設しながら、当該既製杭を地中に圧入してい
き、所定位置に到達した時点で、掘削工具を拡径して当
該既製杭の外径より大きな掘削孔を開設し、この掘削孔
に根固め材を充填して拡大球根を構築する工法である。
また（２）の発明が、場所打ち杭に切削穴を形成して場
所打ち杭を中空杭とするとともに、切削穴の周部コンク
リートを内部側から拡径破砕し、破砕されたコンクリー
ト構造物の外側にケーシングを挿入して土圧をカット
し、鉄筋かごの下部側に拡径部材を係止させて鉄筋かご
を引抜き、その引抜き穴内に埋め戻し用土砂を投入し、
その後、ケーシングを引き抜く方法である。2. Description of the Related Art Heretofore, prior art documents relating to an inside digging method using a steel pipe pile are as follows: (1) Japanese Patent Laid-Open No. 247936/1993; Crushing and removal of reinforced cages.
In the structure of this invention, the invention of (1) is such that the auger is inserted into a hollow hole of a ready-made pile (such as a steel pipe pile), and a drilled hole having substantially the same diameter as that of the ready-made pile is pressed into the ground. When reaching a predetermined position, the drilling tool is expanded to open a drilling hole larger than the outer diameter of the ready-made pile, and a method of constructing an expanded bulb by filling the drilling hole with a solidifying material. It is.
In addition, the invention of (2) provides a cast-in-place pile having a cutting hole formed therein to make the cast-in-place pile a hollow pile, and expanding and crushing the peripheral concrete of the cut hole from the inner side to obtain a crushed concrete structure. Insert the casing to the outside to cut the earth pressure, lock the expanding member on the lower side of the reinforcing bar cage, pull out the reinforcing bar cage, put backfill earth and sand in the drawn hole,
Then, the casing is pulled out.
【０００３】尚、一般に行われる中掘工法は、球根部分
まで掘削後、掘削孔からオーガーを全て取出し、特殊な
ロッドを付けて再び鋼管杭の下を掘削又は鋼管杭内を洗
浄した後、セメントミルク等の杭構築材（固化材）を注
入する構成である。[0003] In general, underground digging is performed by digging up to a bulb portion, taking out all the augers from the digging hole, attaching a special rod, digging under the steel pipe pile again or washing the inside of the steel pipe pile, and then cementing. In this configuration, pile construction material (solidified material) such as milk is injected.
【０００４】[0004]
【発明が解決しようとする課題】前記発明は、拡径球根
の構築又は鉄筋かごの引抜きであり、既製杭の引抜き方
法及び既製杭の杭内壁面の洗浄は困難である。殊に、洗
浄の不十分による弊害、例えば、残土、スライム等の不
純物の球根内への混入による強度不足及び品質の低下等
の問題が生ずる。The above-mentioned invention relates to the construction of an expanded bulb or the pulling out of a reinforcing cage, and it is difficult to pull out a ready-made pile and clean the inner wall surface of the pile. In particular, there are problems such as a bad effect due to insufficient washing, for example, insufficient strength and quality deterioration due to mixing of impurities such as residual soil and slime into the bulb.
【０００５】尚、従来の中掘工法では、オーガーの取出
し、取出し後におけるオーガーの鋼管杭内への再度挿入
という二工程となっている。従って、二度手間となり非
常に能率が悪い課題がある。また二工程目の鋼管内洗浄
及びセメントミルク注入の時には鋼管と近い径を持つキ
リがついていないために、ロッドだけをつけたオーガー
を鋼管の中心に建込むのが非常に難しく、長い鋼管杭の
場合に途中で折れてロッドを落としたりするケースが相
次いで起こること、オーガーを鋼管の中心にうまく建込
めないと鋼管杭の内壁面の土砂の剥離又は洗浄が不完全
となり、望ましい球根が構築できない課題がある。また
この二工程では、通常、オーガーを取出した後に鋼管杭
内を洗浄する。即ち、この鋼管杭内に洗浄用のロッドだ
け付けて再び挿入して管内を洗浄し、その後、セメント
ミルク等の杭構築材を注入する操作が必要となる。従っ
て、一工程の場合と違って時間がかかること、又は鋼管
杭は、土圧によって停止しているだけで実際には掘削孔
内に浮いたような状態に維持されていることから、この
鋼管杭は下に下がり易い。換言すれば、杭構築材が固ま
るまで止まっていてくれる可能性は低く、球根内に貫入
する虞があり、設計図面の天場位置から下がり、設計図
面に則った優れた鋼管杭が構築できないこと、及び荷重
等に対応できる優れた鋼管杭が構築できないこと、等の
課題がある。殊に、柔らかい土質、湧き水等の水の多い
土質等では鋼管が天場位置から下がることが頻繁に起こ
り、前述の如く、その後の工程に影響したり、荷重等に
対応できる優れた鋼管杭が構築できない課題がある。[0005] In the conventional inner digging method, there are two steps of taking out the auger and inserting the auger into the steel pipe pile after taking out the auger. Therefore, there is a problem that the operation becomes twice and the efficiency is extremely low. In addition, it is very difficult to build an auger with only a rod at the center of the steel pipe because there is no drill with a diameter close to that of the steel pipe during the second step of cleaning inside the pipe and pouring cement milk. If the auger cannot be built properly at the center of the steel pipe, the peeling or washing of the soil on the inner wall of the steel pipe pile will be incomplete, and the desired bulb cannot be built unless the auger can be built at the center of the steel pipe. There are issues. In these two steps, the inside of the steel pipe pile is usually washed after the auger is taken out. That is, it is necessary to attach only a cleaning rod to the steel pipe pile and insert it again to clean the inside of the pipe, and then to inject a pile building material such as cement milk. Therefore, since it takes time differently from the case of one process, or because the steel pipe pile is stopped only by the earth pressure and is actually maintained in a state of floating in the borehole, this steel pipe is Piles are easy to fall down. In other words, the possibility that the pile construction material will not stop until it hardens is low, there is a possibility that it will penetrate into the bulb, it will fall from the top position of the design drawing, and it will not be possible to construct an excellent steel pipe pile according to the design drawing And that it is not possible to construct an excellent steel pipe pile capable of coping with a load or the like. In particular, in the case of soft soil, soil with much water such as spring water, etc., steel pipes often drop from the top position, and as described above, excellent steel pipe piles that can affect subsequent processes and can cope with loads, etc. There are issues that cannot be built.
【０００６】[0006]
【課題を解決するための手段】本発明は、鋼管杭の引抜
きを必要に応じて簡易かつ的確に行えること、土砂等の
混入がない高品質の球根の構築を図ること、一工程にて
能率よく施工すること、また鋼管杭が地圧によって止ま
っているうちにセメントを入れて固める工法を採用し
て、設計図面通りの圧入位置を確保し、又優れた強度を
備えかつ美麗な球根を構築すること、等を意図する。DISCLOSURE OF THE INVENTION The present invention aims to easily and accurately pull out a steel pipe pile as required, to construct a high-quality bulb free of earth and sand, etc. A well-constructed method is adopted, and cement is hardened by putting cement while the steel pipe pile is stopped by the ground pressure, ensuring the press-fitting position according to the design drawing, and building a beautiful bulb with excellent strength. And so on.
【０００７】即ち、請求項１の発明は、地中に鋼管杭を
圧入すると同時に、当該鋼管杭の圧入位置を検査し、こ
の検査により否と判断された場合は、オーガーを逆転
し、当該オーガーに装備されている拡縮爪を拡径して当
該オーガーの端縁に係止した後、この係止した状態にお
いて当該オーガーを引上げ、このオーガーの引上げを利
用して当該鋼管杭の引抜き作業を行い、当該鋼管杭を正
規の位置に圧入し直すこと、等の操作を介して当該鋼管
杭を正規の位置に設置した後、当該オーガーの拡縮爪を
利用して根固め用の掘削孔を設け、ついでスクリューに
取付けたブラシで当該鋼管杭内の土砂を掘削排土し、前
記掘削孔にセメントミルク等の杭構築材を注入して根固
め用の球根を構築するとともに、当該鋼管杭内に前記杭
構築材の充填を行って鋼管杭を構築することを特徴とす
る鋼管杭セメントミルク根固め中掘工法である。That is, according to the first aspect of the present invention, the steel pipe pile is pressed into the ground, and at the same time, the press-fitting position of the steel pipe pile is inspected. After expanding and contracting the expansion claw provided on the auger and locking it to the edge of the auger, the auger is pulled up in this locked state, and the steel pipe pile is pulled out using the pulling up of the auger. After press-fitting the steel pipe pile back to the regular position, installing the steel pipe pile at the regular position through an operation such as, and then using the auger claw of the auger to provide a drilling hole for consolidation, Then excavated and excavated the earth and sand in the steel pipe pile with a brush attached to the screw, and poured a pile building material such as cement milk into the drilling hole to construct a bulb for consolidation, and in the steel pipe pile, Fill pile construction material Is a method drilling steel pipe piles cement milk root in the firm, characterized in that to build a steel pipe pile.
【０００８】また、本発明は、オーガーの一回の挿設
で、掘削圧入・排土及び鋼管杭の内壁面洗浄、杭構築材
の充填を図ることを意図する。Another object of the present invention is to perform excavation press-fitting / discharging, cleaning the inner wall surface of a steel pipe pile, and filling a pile construction material with a single insertion of an auger.
【０００９】即ち、請求項３の発明は、鋼管杭セメント
ミルク根固め中掘工法に使用されるオーガーであって、
このオーガーのオーガースクリューに番線、突起、ブラ
シ等の除去手段を設ける構成とした鋼管杭セメントミル
ク根固め中掘工法に使用するオーガーである。[0009] That is, the invention of claim 3 is an auger used in a steel pipe pile cement milk consolidation digging method,
An auger for use in a steel pipe pile cement milk consolidation digging method in which an auger screw of the auger is provided with a removing means such as a wire, a protrusion, a brush and the like.
【００１０】[0010]
【発明の実施の形態】鋼管杭又は鋼管矢板（以下、鋼管
杭で説明する。）にオーガーを挿設して、当該鋼管杭を
指定位置に建込んだ後、鋼管杭の先端部の土砂を掘削排
土していく。この掘削排土にオーガーの推進力、鋼管杭
の自重とを介して、当該鋼管杭の地中内への推進が図れ
る。この推進が順次進められていくことにより、鋼管杭
は地中の所定位置に到達する。ここで拡縮爪を拡径して
根固め用の掘削孔を設けるが、その際、鋼管杭の内壁面
に付着する土砂、付着物、その他不純物等をオーガース
クリューに設けた除去手段によりかき落とし（取り除
き）、混じりもののない耐久性に優れた球根を構築する
ための準備をする。その後、前記掘削孔にセメントミル
ク等の杭構築材を注入して根固め用の球根を構築すると
ともに、当該鋼管杭内に前記杭構築材の充填を行って鋼
管杭を構築する。即ち、一工程で鋼管杭の圧入及び根固
め用の球根を構築する工法である。BEST MODE FOR CARRYING OUT THE INVENTION An auger is inserted into a steel pipe pile or a steel pipe sheet pile (hereinafter referred to as a steel pipe pile), and the steel pipe pile is built at a specified position. Excavation and excavation. The excavated earth can be propelled into the ground through the auger's propulsive force and the weight of the steel pipe pile. As the propulsion proceeds, the steel pipe pile reaches a predetermined position in the ground. At this time, the expansion claw is expanded to provide an excavation hole for root consolidation. At this time, earth and sand, deposits, and other impurities adhering to the inner wall surface of the steel pipe pile are scraped off (removed) by a removal means provided on the auger screw. ), Get ready to build a clean, durable bulb. Then, a pile building material such as cement milk is injected into the excavation hole to construct a bulb for consolidation, and the steel pipe pile is filled with the pile building material to construct a steel pipe pile. That is, it is a construction method of constructing a bulb for press-fitting and consolidating a steel pipe pile in one step.
【００１１】尚、拡縮爪の他の使用例としては、例え
ば、鋼管杭が正規の位置にない場合又は正規の方向を逸
外している場合、その他修理・交換等を要する場合等の
如く、鋼管杭を引抜きたい状況の場合がある。この場合
は、拡縮爪を拡径し、この拡縮爪を鋼管杭の端縁に係止
する。この係止状態でオーガーの引抜き（引上げ）動作
を行う。このオーガーの引抜き力は、拡縮爪を介して鋼
管杭に付与されるので、前記操作を繰り返すことによ
り、地中の鋼管杭は順次引抜かれ、場合により地上に引
上げられる。Other examples of the use of the expansion / contraction claw include, for example, a case where the steel pipe pile is not at a proper position, a case where the steel pipe pile is out of a proper direction, and a case where repair or replacement is required. There may be situations where you want to pull out a stake. In this case, the diameter of the expansion / contraction claw is increased, and this expansion / contraction claw is locked to the edge of the steel pipe pile. In this locked state, the auger is pulled out (pulled up). Since the pulling force of the auger is applied to the steel pipe piles via the expansion / contraction claws, the above-mentioned operation is repeated, whereby the steel pipe piles underground are sequentially pulled out and possibly pulled up to the ground.
【００１２】[0012]
【実施例】以下、本発明の一実施例を説明する。An embodiment of the present invention will be described below.
【００１３】鋼管杭１にはオーガースクリュー２１を有
するオーガー２が挿脱自在に設けられており、鋼管杭１
内の掘削及び掘削土砂の排土を当該オーガー２の回転に
より行う構成となっている。またこのオーガー２の先端
には掘削ビット３及び拡縮爪４が設けられており、当該
拡縮爪４はオーガー２の一方回転（例えば、正転）で縮
径、他方回転（例えば、逆転）で拡径する構成となって
いる。この拡径時に拡縮爪４が鋼管杭１に係止される構
成である。尚、拡縮爪４にはストッパー４１が設けられ
ていて、当該拡縮爪４の拡径位置を決定又は変更できる
構成となっている。この変更の場合は、ストッパー４１
の位置を変更する。またオーガースクリュー２１には番
線、突起、ブラシ等の除去手段５が設けられており、主
としてオーガー２を引き上げる際に、鋼管杭１の内壁面
１ａの土砂、付着物等をかき落す構成となっている。
尚、この除去手段５はオーガースクリュー２１の先端に
半回転分に設けることがよいが限定されない。An auger 2 having an auger screw 21 is provided in the steel pipe pile 1 so as to be insertable and removable.
Excavation in the inside and excavation of excavated earth and sand are performed by rotation of the auger 2. The tip of the auger 2 is provided with a drill bit 3 and an expansion / contraction claw 4. The expansion / contraction claw 4 is reduced in diameter by one rotation (for example, forward rotation) of the auger 2 and expanded by the other rotation (for example, reverse rotation). It is configured to have a diameter. At the time of this diameter expansion, the expansion / contraction claw 4 is locked to the steel pipe pile 1. Note that a stopper 41 is provided on the expansion / contraction claw 4 so that the diameter-expanding position of the expansion / contraction claw 4 can be determined or changed. In the case of this change, the stopper 41
Change the position of. Further, the auger screw 21 is provided with a removing means 5 such as a wire, a projection, a brush, etc., so that when the auger 2 is pulled up, the earth and sand, attached matter, etc. on the inner wall surface 1a of the steel pipe pile 1 are scraped off. I have.
The removing means 5 is preferably provided at the tip of the auger screw 21 for a half turn, but is not limited.
【００１４】次に、鋼管杭１の圧入及び杭の構築方法を
説明する。先ず、鋼管杭１にオーガー２を挿設して、当
該鋼管杭１を建込んだ後、このオーガー２の回転によ
り、鋼管杭１の先端部を掘削排土する。この掘削排土作
業とオーガーの推進力、当該鋼管杭１自身の重みによ
り、当該鋼管杭１の地中内への推進が図れる。この推進
が順次進められて鋼管杭１は地中の所定位置に到達す
る。Next, a method of press-fitting the steel pipe pile 1 and constructing the pile will be described. First, the auger 2 is inserted into the steel pipe pile 1, and after the steel pipe pile 1 is built, the tip of the steel pipe pile 1 is excavated and discharged by rotation of the auger 2. The excavation and earth removal work, the propulsive force of the auger, and the weight of the steel pipe pile 1 itself can promote the steel pipe pile 1 into the ground. This propulsion proceeds sequentially, and the steel pipe pile 1 reaches a predetermined position in the ground.
【００１５】ここで、拡縮爪４を拡径して球根Ａを構築
するが、その際、鋼管杭１の内壁面１ａに付着する、土
砂、付着物等をオーガースクリュー２１に設けた除去手
段５によりかき落とし、当該鋼管杭１の内壁面１ａを美
麗にするとともに、セメントミルクＢ（固化材の一種で
ある。）を注入して土砂等のない耐久性に優れた球根Ａ
を構築する。その後、オーガー２を引上げ、このセメン
トミルクＢが固まった時点で鋼管杭Ｃが構築される。Here, the bulb A is constructed by expanding the diameter of the expanding / contracting claw 4, and at this time, removing means 5 provided on the auger screw 21 with earth and sand, adhering matter, etc. adhering to the inner wall surface 1 a of the steel pipe pile 1. And the inner wall 1a of the steel pipe pile 1 is made beautiful, and the cement milk B (a kind of solidified material) is injected so that the durable bulb A is free from earth and sand.
To build. Thereafter, the auger 2 is pulled up, and when the cement milk B is hardened, the steel pipe pile C is constructed.
【００１６】尚、拡縮爪４の他の使用例としては、例え
ば、鋼管杭１が正規の位置にない場合又は正規の方向を
逸外している場合、その他修理・交換等を要する場合等
の如く、鋼管杭１を引抜きたい状況の場合がある。この
場合は、拡縮爪４を拡径し、この拡縮爪４を鋼管杭１の
端縁に係止する。この係止状態でオーガー２の引抜き動
作を行う。このオーガー２の引抜き力は、拡縮爪４を介
して鋼管杭１に付与されるので、前記操作を繰り返すこ
とにより、地中の鋼管杭１は順次引抜かれ、場合により
地上に引上げられる。Other examples of the use of the expansion / contraction claw 4 include a case where the steel pipe pile 1 is not at a proper position, a case where the steel pipe pile 1 is out of a proper direction, and a case where repair or replacement is required. In some cases, it is desired to pull out the steel pipe pile 1. In this case, the diameter of the expansion / contraction claw 4 is increased, and this expansion / contraction claw 4 is locked to the edge of the steel pipe pile 1. The auger 2 is pulled out in this locked state. Since the pulling force of the auger 2 is applied to the steel pipe pile 1 via the expansion / contraction claw 4, by repeating the above operation, the steel pipe pile 1 under the ground is sequentially pulled out, and in some cases, pulled up to the ground.
【００１７】[0017]
【発明の効果】本発明は、前述の如く、オーガーに拡縮
自在の拡縮爪を設け、この拡縮爪を利用して鋼管杭を引
上げ可能とする構成である。従って、鋼管杭の引抜き必
要時に、簡易かつ的確に行えることにより鋼管杭の的確
な位置又は鋼管杭の簡易かつ的確な構築ができる特徴が
ある。また鋼管杭の不当な沈下・ズレ防止を図り、設計
図面通りの、強度的に優れ、かつ荷重に耐え得る球根を
備えた鋼管杭を構築できる。また一工程で鋼管杭の圧入
及び根固め用の球根を構築する工法であり、一工程で能
率が良く優れた設計通りの鋼管杭を構築できること、そ
れが工期の短縮になり、工事費の削減になること、等の
実用的な効果がある。According to the present invention, as described above, the auger is provided with expandable and contractible expansion and contraction claws, and the steel pipe pile can be pulled up using the expansion and contraction claws. Therefore, when the steel pipe pile needs to be pulled out, it can be easily and accurately performed, so that an accurate position of the steel pipe pile or a simple and accurate construction of the steel pipe pile can be realized. In addition, the steel pipe pile can be prevented from undesirably subsidence and displacement, and a steel pipe pile having a bulb that is excellent in strength and can withstand a load as designed can be constructed. In addition, it is a construction method that builds bulbs for press-fitting and consolidation of steel pipe piles in one process.It is possible to construct efficient and excellent steel pipe piles as designed in one process, which shortens the construction period and reduces construction costs. And other practical effects.
【００１８】また本発明は、鋼管杭が土圧によって止ま
っているうちにセメントを入れて固める工法を採用す
る。従って、優れた強度を備えかつ美麗な球根を構築す
ることができる。Further, the present invention employs a method of cementing and hardening while the steel pipe pile is stopped by earth pressure. Accordingly, a beautiful bulb having excellent strength can be constructed.
【００１９】また本発明は、オーガースクリューに除去
手段を設けたオーガーである。従って、鋼管杭の内壁面
にある土砂等を、確実にかき落しできること、又は土砂
等が残らない美麗で高品質の球根が構築できること、等
の特徴がある。The present invention is also an auger in which an auger screw is provided with a removing means. Therefore, there are features such as the ability to reliably scrape off the soil and the like on the inner wall surface of the steel pipe pile, and the construction of a beautiful and high-quality bulb with no soil and the like remaining.
【図１】建込んだ鋼管杭内にオーガーを挿入した状態の
模式図である。FIG. 1 is a schematic view showing a state where an auger is inserted into a built steel pipe pile.
【図２】オーガーを逆転してオーガーに設けた拡縮爪を
拡径した状態の模式図である。FIG. 2 is a schematic diagram showing a state in which the diameter of an expanding / contracting claw provided on the auger is increased by inverting the auger.
【図３】オーガーを逆転推進して鋼管杭の下方を拡大掘
削し、球根を構築する状態を示す模式図である。FIG. 3 is a schematic diagram showing a state in which the auger is reversely propelled to expand and excavate below a steel pipe pile to construct a bulb.
【図４】オーガーを正転に戻して拡径した爪を閉じ、オ
ーガーを引上げながらセメント注入部分の鋼管内をブラ
シで洗浄する模式図である。FIG. 4 is a schematic diagram in which the auger is returned to normal rotation, the enlarged claws are closed, and the inside of the steel pipe at the cement injection portion is washed with a brush while pulling up the auger.
【図５】球根が構築される直前の状態を示す模式図であ
る。FIG. 5 is a schematic diagram showing a state immediately before a bulb is constructed.
【図６】球根が構築された状態の模式図である。FIG. 6 is a schematic diagram showing a state where a bulb is constructed.
【図７】オーガースクリューに設けた除去手段の一例を
示す拡大斜視図である。FIG. 7 is an enlarged perspective view showing an example of a removing unit provided on the auger screw.
【図８】オーガーに設けた拡縮爪を縮径した状態の底面
図である。FIG. 8 is a bottom view of a state where the diameter of the expansion / contraction claw provided on the auger is reduced.
【図９】オーガーに設けた拡縮爪を拡径した状態の底面
図である。FIG. 9 is a bottom view of a state where the diameter of the expanding / contracting claw provided on the auger is expanded.
【図１０】拡縮爪を拡大して示す斜視図である。FIG. 10 is an enlarged perspective view showing an expansion / contraction claw.
１ 鋼管杭 １ａ 内壁面 ２ オーガー ２１ オーガースクリュー ３ 掘削ビット ４ 拡縮爪 ４１ ストッパー ５ 除去手段 Ａ 球根 Ｂ セメントミルク Ｃ 鋼管杭 DESCRIPTION OF SYMBOLS 1 Steel pipe pile 1a Inner wall surface 2 Auger 21 Auger screw 3 Drilling bit 4 Expansion / contraction claw 41 Stopper 5 Removal means A Bulb B Cement milk C Steel pipe pile
Claims (3)
鋼管杭の圧入位置を検査し、この検査により否と判断さ
れた場合は、オーガーを逆転し、当該オーガーに装備さ
れている拡縮爪を拡径して当該オーガーの端縁に係止し
た後、この係止した状態において当該オーガーを引上
げ、このオーガーの引上げを利用して当該鋼管杭の引抜
き作業を行い、当該鋼管杭を正規の位置に圧入し直すこ
と、等の操作を介して当該鋼管杭を正規の位置に設置し
た後、当該オーガーの拡縮爪を利用して根固め用の掘削
孔を設け、ついでスクリューに取付けたブラシで当該鋼
管杭内の土砂を掘削排土し、前記掘削孔にセメントミル
ク等の杭構築材を注入して根固め用の球根を構築すると
ともに、当該鋼管杭内に前記杭構築材の充填を行って鋼
管杭を構築することを特徴とする鋼管杭セメントミルク
根固め中掘工法。At the same time as the steel pipe pile is pressed into the ground, the press-fitting position of the steel pipe pile is inspected. If the inspection is judged to be no, the auger is reversed and the expansion / contraction claw mounted on the auger is checked. After the diameter of the auger is increased and locked to the edge of the auger, the auger is pulled up in this locked state, the steel pipe pile is pulled out using the pulling up of the auger, and the steel pipe pile is properly After installing the steel pipe pile at the regular position through operations such as press-fitting into the position, etc., a drilling hole for consolidation is provided using the expansion and contraction claw of the auger, and then a brush attached to the screw While excavating and discharging earth and sand in the steel pipe pile, a pile building material such as cement milk is injected into the excavation hole to construct a bulb for consolidation, and the pile construction material is filled in the steel pipe pile. To build a steel pipe pile A special feature of the steel pipe pile cement milk consolidation drilling method.
とする構成の請求項１に記載の鋼管杭セメントミルク根
固め中掘工法。2. The method according to claim 1, wherein the excavation hole for consolidation is an enlarged excavation hole.
使用されるオーガーであって、このオーガーのオーガー
スクリューに番線、突起、ブラシ等の除去手段を設ける
構成とした鋼管杭セメントミルク根固め中掘工法に使用
するオーガー。3. An auger for use in a steel pipe pile cement milk consolidation digging method, wherein the auger screw of the auger is provided with means for removing a wire, a protrusion, a brush, and the like. Auger used for digging method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11286097A JPH10306441A (en) | 1997-04-30 | 1997-04-30 | Steel-pipe pile cement-milk foot-protection pipe jacking with inner excavation system and auger used for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11286097A JPH10306441A (en) | 1997-04-30 | 1997-04-30 | Steel-pipe pile cement-milk foot-protection pipe jacking with inner excavation system and auger used for the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10306441A true JPH10306441A (en) | 1998-11-17 |
Family
ID=14597351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11286097A Pending JPH10306441A (en) | 1997-04-30 | 1997-04-30 | Steel-pipe pile cement-milk foot-protection pipe jacking with inner excavation system and auger used for the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10306441A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100921384B1 (en) | 2007-12-13 | 2009-10-14 | 한국광해관리공단 | Mortar inserting front apparatus for filling an abandoned mine |
| CN101876173A (en) * | 2010-06-30 | 2010-11-03 | 浙江中隧桥波形钢腹板有限公司 | Squeezed hole construction equipment and construction process |
| CN104386965A (en) * | 2014-11-03 | 2015-03-04 | 连云港艾可新型建材有限公司 | Sulfate-resistant and corrosion-resistant impervious non-autoclaved C80P12 concrete pipe pile |
| CN105317382A (en) * | 2015-11-06 | 2016-02-10 | 宁波易通建设有限公司 | Drill bit for constructing bored piles and construction method using same |
| CN114753369A (en) * | 2022-04-29 | 2022-07-15 | 中冶建工集团有限公司 | Cleaning equipment for hollow pipe pile |
-
1997
- 1997-04-30 JP JP11286097A patent/JPH10306441A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100921384B1 (en) | 2007-12-13 | 2009-10-14 | 한국광해관리공단 | Mortar inserting front apparatus for filling an abandoned mine |
| CN101876173A (en) * | 2010-06-30 | 2010-11-03 | 浙江中隧桥波形钢腹板有限公司 | Squeezed hole construction equipment and construction process |
| CN104386965A (en) * | 2014-11-03 | 2015-03-04 | 连云港艾可新型建材有限公司 | Sulfate-resistant and corrosion-resistant impervious non-autoclaved C80P12 concrete pipe pile |
| CN105317382A (en) * | 2015-11-06 | 2016-02-10 | 宁波易通建设有限公司 | Drill bit for constructing bored piles and construction method using same |
| CN114753369A (en) * | 2022-04-29 | 2022-07-15 | 中冶建工集团有限公司 | Cleaning equipment for hollow pipe pile |
| CN114753369B (en) * | 2022-04-29 | 2024-03-29 | 中冶建工集团有限公司 | Cleaning equipment for hollow pipe pile |
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