JP2002097633A - Buried pile, burying device and construction method for buried pile - Google Patents
Buried pile, burying device and construction method for buried pileInfo
- Publication number
- JP2002097633A JP2002097633A JP2000288267A JP2000288267A JP2002097633A JP 2002097633 A JP2002097633 A JP 2002097633A JP 2000288267 A JP2000288267 A JP 2000288267A JP 2000288267 A JP2000288267 A JP 2000288267A JP 2002097633 A JP2002097633 A JP 2002097633A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- protection
- buried
- protective
- ground
- 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
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は地盤に回転圧入、圧
入、打撃等により埋設する埋設杭に係り、詳しくは地盤
と杭との間に生じる負の摩擦力（ネガティブフィクショ
ン）の低減や腐食防止対策を施したあるいは施す必要の
ある埋設杭を埋設する埋設杭装置並びに埋設杭の施工方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to buried piles buried in the ground by rotary press-fitting, press-fitting, hitting, etc., and more particularly, to reducing negative frictional force (negative fiction) generated between the ground and the piles and preventing corrosion. The present invention relates to a buried pile device for burying buried piles which have been or need to be subjected to countermeasures, and a method for constructing a buried pile.
【０００２】[0002]
【従来技術】従来技術において、埋設した埋設杭にかか
る負の摩擦力を低減するために、埋設杭の表面にアスフ
ァルト製部材などの滑り部材や、腐食層の影響を低減す
るために、耐食性の高い合成樹脂製部材からなる保護層
を設ける方法があった。2. Description of the Related Art In the prior art, in order to reduce the negative frictional force applied to a buried pile, the surface of the buried pile is made of a sliding member such as an asphalt member or the like. There has been a method of providing a protective layer made of a high synthetic resin member.
【０００３】[0003]
【発明が解決しようとする課題】図１１に示すように、
地盤沈下を生じる場所に打設された杭には、地盤上方の
軟弱層が沈下することにより、杭上方では杭を沈めよう
とする下向きの摩擦力＝負の摩擦力が働いて杭を下方に
移動させようとし、一方堅固な支持基盤に到達している
杭下方では、負の摩擦力に反発して上向きの摩擦力＝正
の摩擦力が働き、負の摩擦力と正の摩擦力がぶつかり合
う負から正に変化する中立点には、大きな荷重が掛かる
という現象が生じる。As shown in FIG.
When a pile is cast in a place where land subsidence occurs, the soft layer above the ground subsides, and a downward frictional force that tries to sink the pile above the pile = negative frictional force acts to move the pile downward. At the bottom of the pile, which attempts to move it, while reaching the solid support base, an upward frictional force = positive frictional force acts against the negative frictional force, and the negative frictional force and the positive frictional force collide. A large load is applied to the neutral point that changes from negative to positive.
【０００４】負の摩擦力を解消するために地中に埋設さ
れる杭は、設計の時点で沈下の恐れがある地盤を調査検
討し、施工においては負の摩擦力対策工法をとることが
行われてきた。負の摩擦力対策工法として行われてきた
ものとしては、鋼管杭やＰＨＣ杭などの既製杭では瀝青
材の塗布が一般的に行われている。これは事前に既製杭
の負の摩擦力が発生する部位の外周面に特殊アスファル
ト（商品名：スリップレイヤーコンパウンド）を塗布し
たもので、一般的にはＳＬ杭と呼ばれている。岸壁や汚
染地域などに鋼管杭を打設する場合、塩分や薬品による
酸化反応により鋼管が腐食する問題がある。このような
腐食から杭を守るため、杭表面にポリエチレンまたはウ
レタンエラストマーを被覆した杭が用いられてきた。こ
れら杭表面に保護層を設けた杭は、これらの保護層（ス
リップレイヤーコンパウンド（ＳＬコンパウンド）やポ
リエチレンコーティング）を剥離するなどのキズをつけ
ると、所定の性能（負の摩擦力や腐食を回避する）が得
られなくなる間題が発生する。[0004] At the time of design, piles buried in the ground to eliminate the negative frictional force are investigated and examined at the time of design for the ground that may sink, and in the construction, a method of countermeasures against the negative frictional force is taken. I have been. As a method of countermeasure against the negative frictional force, bituminous materials are generally applied to ready-made piles such as steel pipe piles and PHC piles. This is obtained by applying a special asphalt (trade name: slip layer compound) to an outer peripheral surface of a portion of the ready-made pile where a negative frictional force is generated, and is generally called an SL pile. When placing steel pipe piles on a quay or a contaminated area, there is a problem that the steel pipes are corroded by an oxidation reaction caused by salt or chemicals. In order to protect the pile from such corrosion, a pile whose surface is coated with polyethylene or urethane elastomer has been used. If a pile with a protective layer provided on the surface of these piles is scratched such as by peeling off the protective layer (slip layer compound (SL compound) or polyethylene coating), the specified performance (a negative frictional force and corrosion can be avoided) Problem) is not obtained.
【０００５】特に回転圧入杭の場合においては、杭頭部
とオーガーチャッキング部を係合して回転を付与する方
式（トップドライブ方式）と、図１２で示す杭胴体部を
把持して回転を付与する方式（ボディドライブ方式）が
あるが、何れの場合も杭周面の、周面地盤と擦動する距
離が、従来の打撃や埋め込み杭よりも長くなる（スパイ
ラル状に動くため円周長×回転数となる）、ボディドラ
イブ方式の場合には保護層をチャック機構で掴まなけれ
ばならなくなるが（把持）、ＳＬコンパウンドの場合は
把持力を大きくしても、図１３で示すようにＳＬコンパ
ウンドによってチャック部分が滑ってしまい、回転力を
付与できない、保護層を傷めてしまうなどの問題を持つ
ものであった。[0005] In particular, in the case of a rotary press-fitting pile, a method of engaging the pile head with the auger chucking section to impart rotation (top drive method) and a method of gripping the pile body shown in FIG. There is a method (body drive method) to apply, but in any case, the distance of the pile peripheral surface rubbing with the surrounding ground is longer than that of the conventional hitting or embedded pile (the circumference length because it moves in a spiral shape) In the case of the body drive system, the protective layer must be gripped by the chuck mechanism (gripping), but in the case of the SL compound, even if the gripping force is increased, as shown in FIG. The compound has a problem that the chuck portion slips due to the compound, so that a rotational force cannot be applied and the protective layer is damaged.
【０００６】また、従来技術においては、前もって杭本
体の所定の部位に瀝青部材などの保護層を設けておかな
ければならず、運搬や移動の際、杭同士を連結する際な
どに保護層を損傷させる危険があるなどの問題を持つも
のであった。In the prior art, a protective layer such as a bituminous member must be provided in advance at a predetermined portion of the pile main body, and the protective layer is connected when the piles are connected during transportation or movement. It had problems such as risk of damage.
【０００７】本発明は以上のような従来技術の持つ問題
点に鑑みてなされたものであって、その目的は、埋設後
に杭本体の所定の部位に保護層の形成を可能とすると共
に、保護層を有する杭においては保護層を損傷させるこ
となく地盤に確実に埋設することを可能とする埋設装置
並びに埋設杭の施工方法を提供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to enable formation of a protective layer on a predetermined portion of a pile body after burial and to provide protection. It is an object of the present invention to provide a burying device and a method of constructing a buried pile, which enable a pile having layers to be reliably buried in the ground without damaging the protective layer.
【０００８】[0008]
【課題を解決するための手段】上述した目的を達成する
ために本発明は次に述べるような構成となっている。In order to achieve the above-mentioned object, the present invention has the following configuration.
【０００９】＜請求項１記載の埋設装置の発明＞地盤に
埋設される杭本体と、地盤の沈下予測層や腐食予測層に
対応した負の摩擦力低減必要部位や腐食防止必要部位と
して、前記杭本体に設定される保護必要部分と、前記杭
本体外周の前記保護必要部分下方に設けられた杭側係合
部と、前記保護必要部分の外周面を適宜な保護隙間をあ
けて囲い覆うための、該杭本体に上方から抜き差し可能
にセットされる保護管と、この保護管の下方に設けられ
た、前記杭側係合部と着脱自在に係合する保護管側係合
部とからなることを特徴とする。<Invention of the burying device according to claim 1> The pile body buried in the ground and the portion where the negative frictional force needs to be reduced and the portion where the corrosion needs to be prevented corresponding to the predicted settlement layer and the predicted corrosion layer of the ground, A part required for protection set on the pile main body, a pile-side engaging part provided below the required part for protection on the outer periphery of the pile main body, and an outer peripheral surface of the required protection part is covered with an appropriate protection gap. A protection tube set on the pile main body so as to be able to be inserted and removed from above, and a protection tube side engagement portion provided below the protection tube and detachably engaged with the pile side engagement portion. It is characterized by the following.
【００１０】杭が圧入杭や打撃杭である場合において
は、保護管側係合部と杭側係合部においては、保護管側
係合部が保護管の下部先端縁であり、杭側係合部が杭本
体外周に突出された突出部（ストッパー部）であり、こ
の突出部に前記保護管の下部先端縁が係合する関係であ
る。杭が回転圧入杭である場合には、両係合部同士が噛
み合状態や嵌合状態となって保護管をチュービング装置
などの回転駆動装置で把持（掴む）して回転させると杭
本体も該保護管と一体となって回転する関係である。こ
れらの構成を、本請求項に記載の発明並びに以下に述べ
る請求項に記載の発明の技術的範囲に含むものである。In the case where the pile is a press-fitting pile or a hitting pile, in the protection tube side engagement portion and the pile side engagement portion, the protection tube side engagement portion is a lower end edge of the protection tube, and the pile side engagement portion is provided. The joint portion is a protruding portion (stopper portion) protruding from the outer periphery of the pile main body, and the lower end edge of the protective tube is engaged with this protruding portion. When the pile is a rotary press-fitting pile, when the both engagement portions are in an engaged state or a fitted state and the protective tube is gripped (gripped) and rotated by a rotary drive device such as a tubing device, the pile body is also rotated. This is a relationship that rotates integrally with the protection tube. These configurations are included in the technical scope of the invention described in the claims and the invention described in the claims described below.
【００１１】「保護必要部分」は杭本体の全部に及ぶも
の、杭本体の一部分に設定されるもののいずれの場合も
含まれるものである。「前記杭本体外周の前記保護必要
部分下方に設けられた杭側係合部と」とは、保護必要部
分内の下方に設けられる場合、保護必要部分外に設けら
れる何れの場合も含むものである。The "protection required portion" includes both the portion covering the entire pile body and the portion set on a part of the pile body. The phrase “with the pile-side engaging portion provided below the protection-needed portion on the outer periphery of the pile main body” includes any case provided below the protection-needed portion and the case provided outside the protection-needed portion.
【００１２】＜請求項２記載の埋設装置の発明＞請求項
１記載の発明の構成に、杭本体が埋設打止めとなった状
態において、保護必要部分に瀝青部材やモルタル部材な
どの保護材による保護層が形成されるように、前記保護
隙間あるいは前記杭本体と地盤との間に形成される地盤
隙間に保護材を注入充填するための、保護管内側に保護
材注入管を配設してなる構成を加えたことを特徴とす
る。 ＜請求項３記載の埋設装置の発明＞請求項１記載の発明
の構成に、前記杭本体が、該杭埋設前に、杭本体の保護
必要部分に、瀝青部材などの滑り層や合成樹脂層などか
らなる保護層を形成してなることを特徴とする。<Invention of a burying device according to claim 2> In the configuration of the invention according to claim 1, in a state where the pile main body is buried and stopped, a protection material such as a bitumen member or a mortar member is used for a portion requiring protection. A protective material injection pipe is provided inside a protective tube for injecting and filling a protective material into the protective gap or a ground clearance formed between the pile body and the ground so that a protective layer is formed. It is characterized by having added the following configuration. <Invention of an embedding device according to claim 3> In the configuration of the invention according to claim 1, the pile body is provided with a sliding layer such as a bituminous member or a synthetic resin layer in a necessary portion of the pile body before the pile is embedded. It is characterized by forming a protective layer made of such as.
【００１３】＜請求項４記載の埋設杭の発明＞請求項１
記載の埋設装置を用いて構築される埋設杭であって、杭
本体に保護管を被せて前記保護必要部分を覆い、前記保
護必要部分を前記保護管により保護した状態で、地盤に
埋設されることを特徴とする。<Invention of buried pile according to claim 4> Claim 1
A buried pile constructed using the burying device according to the above aspect, wherein the pile is covered with a protective tube to cover the necessary protection portion, and is buried in the ground while the required protection portion is protected by the protective tube. It is characterized by the following.
【００１４】＜請求項５記載の埋設杭の発明＞請求項１
及び２記載の埋設装置を用いて構築される埋設杭であっ
て、 前記保護管の内側に配設された保護材注入管か
ら、負の摩擦力を低減する瀝青部材や腐食を防止するモ
ルタル部材の保護材を保護隙間あるいは該杭本体と地盤
との間に形成される地盤隙間より注入充填され、前記保
護必要部分に保護層が形成されることを特徴とする。
「負の摩擦力低減材」には、アスファルト部材などの粘
弾性を有する瀝青部材、砂、砂礫など、「腐食防止材」
には、モルタル、セメントペースト、コンクリートなど
がある。<Invention of buried pile according to claim 5> Claim 1
A buried pile constructed by using the burying device according to claim 2 and claim 2, wherein a bitumen member for reducing a negative frictional force and a mortar member for preventing corrosion from a protective material injection pipe disposed inside the protective tube. The protective material is injected and filled through a protective gap or a ground gap formed between the pile main body and the ground, and a protective layer is formed on the portion requiring protection.
"Negative friction reducing material" includes "corrosion-inhibiting materials" such as bitumen materials such as asphalt materials, which have viscoelasticity, sand, and gravel.
Include mortar, cement paste, concrete and the like.
【００１５】＜請求項６記載の埋設杭の施工方法の発明
＞請求項１記載の埋設装置による埋設杭の施工方法であ
って、杭本体に保護管を被せて前記保護必要部分を覆
い、前記杭側係合部と前記保護管側係合部を係合状態に
し、前記保護管を埋設推進装置で埋設推進することによ
り前記杭本体を地盤に埋設して行き、前記保護必要部分
を前記保護管により保護した状態で、地盤に埋設するよ
うにしてなることを特徴とする。<Invention of a method for constructing a buried pile according to claim 6> A method for constructing a buried pile by a burying device according to claim 1, wherein the pile body is covered with a protective tube to cover the portion requiring protection. The pile-side engaging portion and the protection tube-side engaging portion are engaged with each other, and the protection tube is buried and buried by a burying propulsion device, whereby the pile body is buried in the ground, and the protection-requiring portion is protected. It is characterized by being buried in the ground while being protected by a pipe.
【００１６】＜請求項７記載の埋設杭の施工方法の発明
＞請求項１記載の埋設装置による埋設杭の施工方法であ
って、保護必要部分が沈下予測層に対応した部位に設定
され、杭本体に保護管を被せて前記保護必要部分を覆
い、前記杭側係合部と前記保護管側係合部を係合状態に
し、前記保護管を埋設推進装置で埋設推進することによ
り前記杭本体を地盤に埋設して行き、埋設打止位置まで
埋設した後、杭側係合部と保護管側係合部の係合状態を
解除して、前記保護管を前記沈下予定層の予測地盤沈下
距離と略同じかそれより長い距離分引き上げ移動させ、
杭本体と前記保護管を地盤に埋設するようにしてなるこ
とを特徴とする。<Invention of a method for constructing a buried pile according to claim 7> A method for constructing a buried pile by a burying device according to claim 1, wherein a portion requiring protection is set at a site corresponding to a predicted settlement layer. The pile main body is covered by covering the main body with a protective tube to cover the necessary portion for protection, bringing the pile-side engaging portion and the protective tube-side engaging portion into an engaged state, and burying the protective tube with a burying propulsion device. Going into the ground, after burying up to the burial hitting position, disengage the engagement state of the pile side engagement part and the protection tube side engagement part, and put the protection tube in the predicted ground subsidence of the planned settlement layer Raise and move by a distance approximately the same as or longer than the distance,
The pile body and the protection tube are buried in the ground.
【００１７】＜請求項８記載の埋設杭の施工方法の発明
＞請求項１及び２記載の埋設装置による埋設杭の施工方
法であって、 杭本体に保護管を被せて保護必要部分を
覆い、杭側係合部と保護管側係合部を係合状態にし、前
記保護管を埋設推進装置で埋設推進することにより前記
杭本体を地盤に埋設して行き、埋設打止位置まで埋設し
た後、杭側係合部と保護管側係合部の係合状態を解除
し、前記保護管の内側に配設された保護材注入管から、
瀝青部材などの保護材を保護隙間あるいは該杭本体と地
盤との間に形成される地盤隙間に注入充填し、前記保護
必要部分に保護層を形成して前記保護管を引き上げ移動
させ、撤去することを特徴とする。<Invention of a method for constructing a buried pile according to claim 8> A method for constructing a buried pile by a burying device according to claims 1 and 2, wherein the pile body is covered with a protective tube to cover a portion requiring protection. After the pile-side engaging portion and the protective tube-side engaging portion are engaged, and the protective tube is buried and propelled by the burying propulsion device, the pile body is buried in the ground and buried to the burial hitting position. The engagement state between the pile-side engaging portion and the protective tube-side engaging portion is released, and the protective material injection tube disposed inside the protective tube,
A protective material such as a bituminous member is injected and filled into a protective gap or a ground gap formed between the pile body and the ground, a protective layer is formed on the necessary protection part, and the protective tube is lifted, moved, and removed. It is characterized by the following.
【００１８】＜請求項９記載の埋設杭の施工方法の発明
＞請求項１又は３記載の埋設装置による埋設杭の施工方
法であって、該杭埋設前に、保護必要部分に、瀝青部材
などの滑り層や合成樹脂層などからなる保護層を形成し
てなる構成の杭本体に保護管を被せて保護層を覆い、杭
側係合部と保護管側係合部を係合状態にし、前記保護管
を埋設推進装置で埋設推進することにより前記杭本体を
地盤に埋設して行き、埋設打止位置まで埋設したら杭側
係合部と保護管側係合部の係合状態を解除して、前記保
護管を地盤から引き抜くことを特徴とする。<Invention of a method for constructing a buried pile according to claim 9> A method for constructing a buried pile by a burying device according to claim 1 or 3, wherein a bitumen member or the like is added to a portion requiring protection before the pile is buried. Covering the protective layer by covering the protective layer by covering the protective layer on the pile body having a protective layer composed of a sliding layer, a synthetic resin layer, and the like, and engaging the pile-side engaging portion and the protective tube-side engaging portion with each other, The pile body is buried in the ground by burying and propelling the protection tube with the burying propulsion device, and when the pile body is buried to the burying position, the engagement state of the pile side engagement portion and the protection tube side engagement portion is released. The protective tube is pulled out of the ground.
【００１９】[0019]
【発明の実施の形態】本発明の実施の形態を図面を参照
しながら説明する。 ＜実施の形態１＞図１は本発明の実施の形態１の保護層
を有する回転圧入杭の正面図（左図）、保護管の正面図
（中央図）及び回転圧入杭の保護層を保護管に納めた状
態の正面図（左図）、図２、図３、図４は同じ実施の形
態１の杭の地盤への埋設施工手順を示した施工手順図で
ある。Embodiments of the present invention will be described with reference to the drawings. <Embodiment 1> FIG. 1 is a front view (left view) of a rotary press-fitting pile having a protective layer according to Embodiment 1 of the present invention, a front view of a protective tube (center view), and protects a protective layer of a rotary press-fitting pile. FIGS. 2, 3, and 4 are front view (left view) of a state in which the piles are accommodated in a pipe, and are construction procedure diagrams showing the construction procedure of embedding a pile of the first embodiment in the ground.
【００２０】埋設杭装置１は、地盤に回転圧入する鋼管
製の杭本体２と、この杭本体２の上方から被せるように
して該杭本体２の上方、保護層４部分（保護必要部分）
を囲い覆う保護管（鞘管）３とからなっている。杭本体
２は、先端に地盤を掘削するための螺旋状の掘削羽根１
２が設けられ、杭を埋設する地盤の軟弱層に設置される
杭本体の適宜な部位（図では杭本体２の上方略半分の部
位）に、地盤に埋設後に該地盤と杭本体２との間に生じ
る負の摩擦力（ネガティブフィクション）の低減を図る
ためのアスファルト製部材などの瀝青部材を塗布した粘
弾性滑り層や、腐食防止のためのポリエチレン又はウレ
タンエラストマー等を被覆して形成された保護層４と、
この保護層４の下端部の杭本体２の同周上に突設された
複数個の杭側係合部５とからなっている。The buried pile device 1 comprises a pile body 2 made of a steel pipe which is rotatably pressed into the ground, and a protective layer 4 portion (necessary protection portion) above the pile body 2 so as to cover the pile body 2 from above.
And a protective tube (sheath tube) 3 that covers the space. The pile body 2 has a spiral excavating blade 1 for excavating the ground at the tip.
2 is provided, and at an appropriate portion of the pile main body installed in the soft layer of the ground in which the pile is buried (in the figure, approximately half above the pile main body 2), the ground and the pile main body 2 are buried in the ground. It is formed by coating a viscoelastic sliding layer coated with a bituminous member such as an asphalt member for reducing negative frictional force (negative fiction) generated between the members and a polyethylene or urethane elastomer for corrosion prevention. A protective layer 4,
The lower end of the protective layer 4 includes a plurality of pile-side engaging portions 5 protruding on the same circumference of the pile main body 2.
【００２１】保護管３は、保護層（保護必要部分）４の
外周を適宜な隙間をあけて囲い覆うように、杭本体２に
上方から抜き差し可能にセットされる保護管本体１３
と、この保護管本体１３の下方先端に杭側係合部５と杭
本体２が一体的に回転するように杭本体２に保護管の先
端側を係合するための、杭側係合部５を填め入れるよう
にした保護管側係合部６とからなっている。保護管側係
合部６は、挿入口７と該挿入口７の上部に杭側係合部５
が横移動して填り込むための左填り込み部８と右填り込
み部９とからなっている。杭側係合部５が左填り込み部
８あるいは右填り込み部９に填り込んでいる場合は、保
護管３を引き上げたり吊り状態にしても杭本体２は外れ
ることなく該保護管３と一緒に引き上げられたり吊り状
態となる。The protection tube 3 is set in the pile body 2 so as to be removable from above so as to cover the outer periphery of the protection layer (required protection portion) 4 with an appropriate gap.
And a pile-side engaging portion for engaging the tip side of the protective tube with the pile body 2 so that the pile-side engaging portion 5 and the pile body 2 rotate integrally with the lower end of the protective tube body 13. 5 and a protection tube side engaging portion 6 into which is inserted. The protection tube side engaging portion 6 is provided with an insertion opening 7 and a pile side engaging portion 5 at an upper portion of the insertion opening 7.
Is composed of a left insertion portion 8 and a right insertion portion 9 for laterally moving and inserting. When the pile-side engaging portion 5 is inserted into the left filling portion 8 or the right filling portion 9, even if the protection tube 3 is pulled up or suspended, the pile main body 2 does not come off without being removed. It is raised or suspended together with 3.
【００２２】図２、図３及び図４において、埋設杭装置
１は次のような手順で杭本体２を地盤に回転圧入埋設す
る。 図２の（イ） 地面に杭を回転圧入推進するための回転駆動装置１０
（図のものはチャックで保護管３の側部をチャック機構
で把持して回転させるボディドライブ方式）を設置し、
杭本体２に保護管３をセットした埋設杭装置１をクレー
ン等（図示せず）で吊り上げ、降ろし回転駆動装置装置
にセットする。 図２（ロ）、図３の（ハ）（ニ） 回転駆動装置１０において保護管３の胴部をチャック機
構で把持して回転させ、杭を地盤に回転圧入して行く。In FIG. 2, FIG. 3 and FIG. 4, the buried pile device 1 rotatively press-fits the pile main body 2 into the ground in the following procedure. FIG. 2A shows a rotary drive device 10 for rotationally press-fitting a pile into the ground.
(The figure shows a body drive system in which the side of the protective tube 3 is gripped by a chuck and rotated by a chuck mechanism).
The buried pile device 1 in which the protection tube 3 is set on the pile main body 2 is lifted by a crane or the like (not shown), and is set down in the rotary drive device. 2 (b), (c) (d) of FIG. 3 (d) In the rotary drive device 10, the body of the protective tube 3 is gripped and rotated by the chuck mechanism, and the pile is rotationally pressed into the ground.
【００２３】図４の（ホ） 杭の打設が完了したら、保護管３を少し戻し回転させ
て、左側填り込み部８に在る杭側係合部５を挿入口７上
に合わせ、保護管３をクレーン等で吊り地盤から引き抜
く。 図４の（ヘ） 保護層４が軟弱層に無傷な状態で露出し、杭先端は支持
層に食い込んだ状態となる。地盤沈下する杭周囲の土砂
に対して保護層４が滑り層として作用し、杭に加わる負
の摩擦力（ネガティブフィクション）を大幅に低減し
て、杭本体の沈下や破損を防止し支える建造物への影響
を防止する。杭本体の保護層でない部位の埋設は、保護
管をセットすることなく杭本体を把持して埋設推進する
工程を行う場合があることは言うまでもない。特に地面
に設置して杭を回転圧入する埋設推進装置による埋設の
場合は有効である。以下に述べる実施の形態の説明にお
いて、前述した実施の形態の構成と同じ構成には同じ符
号を付しその説明を省略する。(E) In FIG. 4, when the placing of the pile is completed, the protection tube 3 is slightly returned and rotated, and the pile-side engaging portion 5 in the left insertion portion 8 is aligned with the insertion port 7. The protection tube 3 is suspended from the ground by a crane or the like. (F) of FIG. 4 The protective layer 4 is exposed intact to the soft layer, and the tip of the pile enters the support layer. The protective layer 4 acts as a sliding layer against the soil around the pile that sinks, significantly reducing the negative frictional force (negative fiction) applied to the pile, preventing the pile from sinking and breaking, and supporting the building. Prevent the impact on Needless to say, when burying a portion of the pile main body that is not the protective layer, a step of holding the pile main body and promoting burying may be performed without setting a protective tube. This is particularly effective in the case of burial by a buried propulsion device which is installed on the ground and rotationally press-fits a pile. In the following description of the embodiments, the same components as those of the above-described embodiments are denoted by the same reference numerals, and description thereof will be omitted.
【００２４】＜実施の形態２＞図５は本発明の実施の形
態２の埋設杭装置の断面図（左図）及び正面図（右
図）、図６は同じ実施の形態２の保護管を撤去し杭本体
を埋設完了しにした状態を示す正面図である。埋設杭装
置４０は埋設杭装置１の構成に次の構成を加えたもので
ある。杭本体２の保護層４の部位に保護管３と保護層４
との間に形成される保護隙間４１を均一な隙間にするた
めに、杭本体２側に突起球面形状のスペーサー４２が適
宜な数設けている。スペーサー４２は保護管側に設ける
のもよいし、その材質、形状は突起軌条のものなど色々
なものがあり、接着方法も種々異なる。杭本体２の外側
下方に土砂が保護隙間４１内に進入するのを防止する全
周帯状突起からなる土砂防止ストッパー４３が設けられ
ている。土砂防止ストッパーは保護管側に設けるのもよ
い。その材質は金属製のものゴム製部材などの弾性部材
など色々である。保護管３の先端は、埋設推進時の土砂
の抵抗を軽減するために先細りのテーパー部４４に形成
されている。４６は保護管の接続部であり、接続はボル
ト、回転抑止キーの機械式継手または溶接継手などによ
る。また、接続がない場合もある。<Second Embodiment> FIG. 5 is a sectional view (left view) and a front view (right view) of a buried pile device according to a second embodiment of the present invention, and FIG. It is a front view which shows the state which removed and made the pile main body completion of embedding. The buried pile device 40 is obtained by adding the following configuration to the configuration of the buried pile device 1. Protective tube 3 and protective layer 4
In order to make the protective gap 41 formed between the pile main body 2 and the protective gap 41 uniform, a suitable number of spacers 42 having a spherical projection shape are provided on the pile main body 2 side. The spacer 42 may be provided on the side of the protective tube, and its material and shape are various, such as those of a projection rail, and the bonding method is also variously different. Below the outside of the pile main body 2, there is provided a sediment prevention stopper 43 composed of a full band-like projection for preventing earth and sand from entering the protection gap 41. The earth and sand prevention stopper may be provided on the protection tube side. The material is various such as metal and elastic members such as rubber members. The distal end of the protective tube 3 is formed in a tapered portion 44 which is tapered in order to reduce the resistance of earth and sand during burial. Reference numeral 46 denotes a connection portion of the protection tube, which is connected by a bolt, a mechanical joint of a rotation prevention key, or a welded joint. In some cases, there is no connection.
【００２５】＜実施の形態３＞図７は本発明の実施の形
態３の埋設途中の埋設杭装置の断面図、図８は同じ実施
の形態３の埋設完了した状態の埋設杭装置の断面図であ
る。埋設杭装置４８は、埋設杭装置４０の構成の保護層
４を設けない構成としたものである。保護必要部分４９
が沈下予測層５０に対応した部位（沈下予測層より長
い）に設定され、杭本体２に保護管３を被せて保護必要
部分４９を覆い、杭側係合部５と保護管側係合部６を係
合状態（嵌合状態）にし、保護管３を埋設推進装置（図
示せず）で埋設推進することにより杭本体２を地盤に埋
設して行き、埋設打止位置まで埋設したら、杭側係合部
５と保護管側係合部６の係合状態を解除して保護管３を
沈下予定層の予測地盤沈下距離より長い距離Ｈ分だけ引
き上げ移動させて、杭本体２と保護管３を地盤に埋設完
了するようにしている。地盤沈下が生じるとその沈下分
だけ保護管３が地盤と共に下方に移動させられて、杭本
体２に地盤沈下による摩擦抵抗が働かないように機能す
る。また、腐食層から杭本体を保護する部位に保護管を
設けることにより、杭本体の腐食を防止することもでき
る。<Embodiment 3> FIG. 7 is a cross-sectional view of a buried pile device during embedding according to a third embodiment of the present invention, and FIG. 8 is a cross-sectional view of the buried pile device of the same embodiment 3 in a state where the embedding is completed. It is. The buried pile device 48 has a configuration in which the protective layer 4 of the configuration of the buried pile device 40 is not provided. Required protection 49
Is set to a portion (longer than the settlement prediction layer) corresponding to the settlement prediction layer 50, the protection tube 3 is put on the pile main body 2 to cover the protection necessary portion 49, and the pile side engagement portion 5 and the protection tube side engagement portion 6 is engaged (fitted state), and the protection pipe 3 is buried and propelled by a burying propulsion device (not shown) to bury the pile body 2 in the ground. The state of engagement between the side engaging portion 5 and the protective tube side engaging portion 6 is released, and the protective tube 3 is lifted and moved by a distance H longer than the predicted ground subsidence distance of the layer to be settled. 3 is buried in the ground. When the land subsidence occurs, the protection tube 3 is moved downward together with the ground by the amount of the subsidence, so that the pile body 2 functions so that the frictional resistance due to the land subsidence does not work. In addition, by providing a protective tube at a portion that protects the pile main body from the corroded layer, corrosion of the pile main body can be prevented.
【００２６】＜実施の形態４＞図９は本発明の実施の形
態４の埋設杭装置の断面図（左図）及び右側面図（右
図）、図１０は同じ実施の形態４の保護部材を充填途中
を示す断面図（左図）及び保護管を撤去して杭本体を埋
設完了した状態を示す正面図（右図）である。埋設杭装
置５２は、埋設杭装置４８の保護管３の内壁に注入管５
３を配設したものである。注入管５３はその噴出口を保
護管３の下方先端近くにして、地上から流体性の瀝青部
材（摩擦力低減材）やモルタル部材（腐食防止材）など
の保護部材５４を保護隙間４１、あるいは保護管３を引
き上げるときに形成される杭本体２と地盤との間の地盤
隙間に注入充填して行き、杭本体２の保護必要部分４９
に保護層４を形成して行く。すなわち保護部材５４の充
填は、保護管３を引き上げながら、引き上げに合わせて
行なわれるが、充填完了後に、保護管を一度に引き上げ
てもよい。保護層４形成完了後は保護管３は撤去し、繰
り返し使用する。注入管は複数本設け複数箇所から充填
して行くのもよい。また、保護管を回転させながら保護
部材を充填して行くのもよい。<Embodiment 4> FIG. 9 is a sectional view (left view) and a right side view (right view) of a buried pile device according to a fourth embodiment of the present invention, and FIG. 10 is a protection member of the same embodiment 4. Is a cross-sectional view (left figure) showing the filling process, and a front view (right figure) showing a state in which the protection tube has been removed and the pile body has been completely buried. The buried pile device 52 is provided on the inner wall of the protection tube 3 of the buried pile device 48.
3 is provided. The injection pipe 53 has an ejection port near the lower end of the protection pipe 3 and a protection member 54 such as a fluid bitumen member (frictional force reducing material) or a mortar member (corrosion prevention material) from the ground to the protection gap 41 or The ground gap between the pile body 2 and the ground formed when the protective tube 3 is pulled up is injected and filled, and the protection necessary portion 49 of the pile body 2 is filled.
Next, a protective layer 4 is formed. That is, the filling of the protective member 54 is performed in accordance with the lifting while the protective tube 3 is being pulled up, but the protective tube may be pulled up at once after the filling is completed. After the formation of the protective layer 4, the protective tube 3 is removed and used repeatedly. A plurality of injection tubes may be provided and filled from a plurality of locations. Alternatively, the protective member may be filled while rotating the protective tube.
【００２７】[0027]
【発明の効果】本発明は上述したように、杭本体と共に
保護必要部分を覆った保護管を埋設して行くものであ
り、埋設打止めした後で係合状態を解除して保護管を引
き抜き移動して、引き抜き撤去でき、また保護管をその
まま保護層として埋設完了にすることが可能なものであ
り、これらの機能により次に述べるような効果を奏す
る。 （１）保護管を保護必要部分の保護層としてそのまま埋
設完了にすることができ、保護必要部分に事前に保護部
材による保護層の形成を行わなくてよいという効果を奏
する。また、地盤沈下層の沈下予測距離分だけあるいは
それ以上の距離、保護管を引き抜き移動させて埋設完了
にすることにより、地盤沈下層の沈下が起きても保護管
がその沈下分だけ下方に移動して、杭本体に地盤沈下の
影響を与えないという効果を奏する。 （２）保護管を引き抜き撤去しながら、保護材を保護隙
間や地盤隙間に注入充填して、保護必要部分に保護層を
形成可能としているので、事前に保護部材による保護層
の形成を行わなくてよいので、運搬、保管、杭同士の連
結や埋設施工時の注意管理も必要なく、全く無傷の保護
層を簡単な装置により簡単・容易に形成できるという効
果を奏する。As described above, the present invention embeds a protection tube covering a necessary portion of protection together with a pile main body. After the embedding is stopped, the engaged state is released and the protection tube is pulled out. The protective tube can be moved, pulled out and removed, and the protective tube can be completely buried as a protective layer, and these functions have the following effects. (1) The protection tube can be completely buried as a protection layer for a portion requiring protection, and the protection layer need not be formed in advance by a protection member on the portion requiring protection. In addition, by pulling out and moving the protective tube by the estimated settlement distance of the ground subsidence layer and moving it to complete the embedding, even if land subsidence occurs, the protection tube moves downward by the amount of the settlement As a result, the pile body is not affected by land subsidence. (2) Since the protective material is injected and filled into the protective gap or the ground gap while pulling out and removing the protective tube, the protective layer can be formed on the portion requiring protection, so that the protective layer is not formed in advance by the protective member. Therefore, there is no need to carry out transportation, storage, connection of piles, and careful management at the time of embedding, and an effect that a completely intact protective layer can be easily and easily formed by a simple device.
【００２８】（３）杭本体に保護層を設けてなるもの
は、保護管により保護層が地盤に接触しない状態で埋設
でき、保護層を無傷に埋設できるという効果を奏する。
特に、回転圧入杭の場合、チュービング装置等の把持部
分を、杭本体ではない保護管にできるので、把持により
保護層を傷つけることなく施工できると共に、保護層で
はない保護管を直接チャック機構等で把持するので十分
な把持摩擦が得られ、把持部分が滑るという問題を起こ
さないという効果を奏する。保護管は回収して繰り返し
使用し続けることができるので、安価な施工方法をも実
現している。(3) When the protection layer is provided on the pile body, the protection pipe can be buried in a state where the protection layer does not contact the ground by the protection tube, and the protection layer can be buried intact.
In particular, in the case of a rotary press-fitting pile, the gripping portion of the tubing device or the like can be a protective tube that is not a pile body, so that the protective layer can be constructed without being damaged by gripping, and the protective tube that is not a protective layer can be directly chucked by a chuck mechanism or the like. Since the gripping is performed, sufficient gripping friction is obtained, and an effect that the problem that the gripping portion slips does not occur is exhibited. Since the protective tube can be collected and used repeatedly, an inexpensive construction method is realized.
【図１】本発明の実施の形態１の保護層を有する回転圧
入杭の正面図（左図）、保護管の正面図（中央図）及び
回転圧入杭の保護層を保護管に納めた状態の正面図（左
図）。FIG. 1 is a front view (left view) of a rotary press-fitting pile having a protective layer according to Embodiment 1 of the present invention, a front view of a protective tube (center view), and a state in which a protective layer of a rotary press-fitting pile is housed in a protective pipe. Front view (left figure).
【図２】本発明の実施の形態１の杭の地盤への埋設施工
手順を示した施工手順図。FIG. 2 is a construction procedure diagram showing a procedure of embedding a pile in the ground according to the first embodiment of the present invention.
【図３】同じく本発明の実施の形態１の杭の地盤への埋
設施工手順を示した施工手順図。FIG. 3 is a construction procedure diagram showing a construction procedure of embedding a pile in the ground according to the first embodiment of the present invention.
【図４】同じく本発明の実施の形態１の杭の地盤への埋
設施工手順を示した施工手順図。FIG. 4 is a construction procedure diagram showing a construction procedure of embedding a pile in the ground according to the first embodiment of the present invention.
【図５】本発明の実施の形態２の埋設杭装置の断面図
（左図）及び正面図（右図）。FIG. 5 is a sectional view (left view) and a front view (right view) of an embedded pile device according to a second embodiment of the present invention.
【図６】同じく本発明の実施の形態２の保護管を撤去し
杭本体を埋設完了しにした状態を示す正面図。FIG. 6 is a front view showing a state in which the protection tube according to the second embodiment of the present invention has been removed and the pile body has been completely buried.
【図７】本発明の実施の形態３の埋設途中の埋設杭装置
の断面図。FIG. 7 is a sectional view of a buried pile device in the middle of burying according to a third embodiment of the present invention.
【図８】同じく本発明の実施の形態３の埋設完了した状
態の埋設杭装置の断面図。FIG. 8 is a cross-sectional view of the buried pile device in a state where the burying is completed according to the third embodiment of the present invention.
【図９】本発明の実施の形態４の埋設杭装置の断面図
（左図）及び右側面図（右図）。FIG. 9 is a sectional view (left view) and a right side view (right view) of an embedded pile device according to a fourth embodiment of the present invention.
【図１０】同じく本発明の実施の形態４の保護部材を充
填途中を示す断面図（左図）及び保護管を撤去して杭本
体を埋設完了した状態を示す正面図（右図）。FIG. 10 is a cross-sectional view (left figure) showing a state in which a protection member according to Embodiment 4 of the present invention is being filled (left figure) and a front view (right figure) showing a state in which a protection tube has been removed and a pile main body has been completely embedded.
【図１１】従来工法における、負の摩擦力と正の摩擦力
の説明図。FIG. 11 is an explanatory view of a negative frictional force and a positive frictional force in the conventional method.
【図１２】従来工法における、ボディドライブ方式の説
明図。FIG. 12 is an explanatory view of a body drive method in a conventional method.
【図１３】従来工法における、カラー（把持用冶具）の
説明図。FIG. 13 is an explanatory view of a collar (holding jig) in the conventional method.
１・・・・・埋設杭装置 ２・・・・・杭本体 ３・・・・・保護管 ４・・・・・保護層 ５・・・・・杭側係合部 ６・・・・・保護管側係合部 ７・・・・・挿入口 ８・・・・・左填り込み部 ９・・・・・右填り込み部 １０・・・・・回転駆動装置 １１・・・・・鋼管露出部 １２・・・・・掘削羽根 １３・・・・・保護管本体 ２０・・・・・埋設杭装置 ２１・・・・・杭本体 ２２・・・・・掘削羽根 ２３・・・・・滑り層 ２４・・・・・移動層 ２５・・・・・保護層（保護必要部分） ２６・・・・・露出部分 ２７・・・・・杭側係合部 ２８・・・・・保護バンド部 ３０・・・・・保護管 ３１・・・・・保護管本体 ３２・・・・・保護管側係合部 ３３・・・・・挿入口 ３４・・・・・左填り込み部 ３５・・・・・右填り込み部 ４０・・・・・埋設杭装置 ４１・・・・・保護隙間 ４２・・・・・スペーサー ４３・・・・・土砂防止ストッパー ４４・・・・・テーパー部 ４６・・・・・接続部 ４８・・・・・埋設杭装置 ４９・・・・・保護必要部分 ５０・・・・・沈下予測層 ５２・・・・・埋設杭装置 ５３・・・・・注入管 ５５・・・・・保護部材 1 ···· Buried pile device 2 ···· Pile body 3 ···· Protective tube 4 ····· Protective layer 5 ···· Pile-side engaging portion 6 ····· Protective tube side engaging section 7 Insertion port 8 Left insertion section 9 Right insertion section 10・ Exposed part of steel pipe 12 ・ ・ ・ ・ ・ ・ ・ Drilling blade 13 ・ ・ ・ ・ ・ ・ ・ Protective tube main body 20 ・ ・ ・ ・ ・ ・ ・ Buried pile device 21 ・ ・ ・ ・ ・ ・ Pile main body 22 ・ ・ ・ ・ ・ ・ ・ ・ ・ Drilling blade 23 ・ ・ ・···································································································· Pile-side engaging portion 28 ······· Protective band part 30 Protective tube 31 Protective tube body 32 Protective tube side engaging part 33 Insertion hole 34 Part 35 ... right filling part 40 ····· Buried pile device 41 ····· Protective gap 42 ····· Spacer 43 ······································· Taper portion 46 ································ ···· Buried pile device 49 ······ Required protection 50 ····· Settlement prediction layer 52 ···· Buried pile device 53 ······ Injection pipe 55 ····· Protective member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大木 仁 東京都千代田区大手町２−６−３ 新日本 製鐵株式会社内 Ｆターム(参考） 2D041 AA02 BA06 BA07 BA26 BA32 DB02 FA12 FA14 2D050 AA06 CB22 CB23 EE03 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hitoshi Oki 2-6-3 Otemachi, Chiyoda-ku, Tokyo F-term in Nippon Steel Corporation (reference) 2D041 AA02 BA06 BA07 BA26 BA32 DB02 FA12 FA14 2D050 AA06 CB22 CB23 EE03
Claims (9)
減必要部位や腐食防止必要部位として、前記杭本体に設
定される保護必要部分と、 前記杭本体外周の前記保護必要部分下方に設けられた杭
側係合部と、 前記保護必要部分の外周面を適宜な保護隙間をあけて囲
い覆うための、該杭本体に上方から抜き差し可能にセッ
トされる保護管と、 この保護管の下方に設けられた、前記杭側係合部と着脱
自在に係合する保護管側係合部とからなることを特徴と
する埋設装置。1. A pile main body buried in the ground, and a protection necessary part set in the pile main body as a part requiring a negative frictional force reduction or a part requiring corrosion prevention corresponding to a soil settlement prediction layer or a corrosion prediction layer. A pile-side engaging portion provided below the necessary protection portion on the outer periphery of the pile main body; and inserting and removing the pile main body from above to cover the outer peripheral surface of the required protection portion with an appropriate protection gap. An embedding device, comprising: a protection tube set so as to be capable of being provided; and a protection tube side engagement portion provided below the protection tube and detachably engaged with the pile side engagement portion.
おいて、保護必要部分に負の摩擦力を低減する瀝青部材
や腐食を防止するモルタル部材などの保護材による保護
層が形成されるように、前記保護隙間あるいは前記杭本
体と地盤との間に形成される地盤隙間に保護材を注入充
填するための、保護管内側に保護材注入管を配設してな
ることを特徴とする請求項１記載の埋設装置。2. In a state where the pile main body is buried and stopped, a protection layer made of a protection material such as a bitumen member for reducing a negative frictional force or a mortar member for preventing corrosion is formed on a portion requiring protection. A protective material injection pipe is provided inside the protective tube for injecting and filling the protective material into the protective gap or a ground clearance formed between the pile body and the ground. Item 7. The burying device according to Item 1.
保護必要部分に、瀝青部材などの滑り層や合成樹脂層な
どからなる保護層を形成してなることを特徴とする請求
項１記載の埋設装置。3. The pile body according to claim 1, wherein a protective layer made of a sliding layer such as a bituminous member or a synthetic resin layer is formed on a necessary portion of the pile body before the pile is buried. Item 7. The burying device according to Item 1.
の前記保護必要部分を前記保護管により保護した状態
で、地盤に埋設されることを特徴とする埋設杭。4. A buried pile, wherein the buried device according to claim 1 is buried in the ground in a state where the necessary protection portion of the pile main body is protected by the protective tube.
前記保護管の内側に配設された保護材注入管から、瀝青
部材やモルタル部材などの保護材を保護隙間あるいは該
杭本体と地盤との間に形成される地盤隙間に注入充填さ
れることで、前記保護必要部分に保護層が形成されるこ
とを特徴とする埋設杭。5. The burying device according to claim 1, wherein
A protective material such as a bitumen member or a mortar member is injected and filled into a protective gap or a ground gap formed between the pile main body and the ground from a protective material injection pipe disposed inside the protective tube. A buried pile, wherein a protective layer is formed on the portion requiring protection.
施工方法であって、杭本体に保護管を被せて前記保護必
要部分を覆い、前記杭側係合部と前記保護管側係合部を
係合状態にし、前記保護管を埋設推進装置で埋設推進す
ることにより前記杭本体を地盤に埋設して行き、前記保
護必要部分を前記保護管により保護した状態で、地盤に
埋設するようにしてなることを特徴とする埋設杭の施工
方法。6. A method for constructing a buried pile by the burying device according to claim 1, wherein the pile body is covered with a protective tube to cover the portion requiring protection, and the pile-side engaging portion and the protective-tube-side engaging portion. The pile body is buried in the ground by burying the protection tube with the buried propulsion device, and burying the pile in the ground with the necessary protection part protected by the protection tube. A method for constructing a buried pile, characterized in that:
施工方法であって、保護必要部分が沈下予測層に対応し
た部位に設定され、杭本体に保護管を被せて前記保護必
要部分を覆い、前記杭側係合部と前記保護管側係合部を
係合状態にし、前記保護管を埋設推進装置で埋設推進す
ることにより前記杭本体を地盤に埋設して行き、埋設打
止位置まで埋設した後、杭側係合部と保護管側係合部の
係合状態を解除して、前記保護管を前記沈下予定層の予
測地盤沈下距離と略同じかそれより長い距離分引き上げ
移動させ、杭本体と前記保護管を地盤に埋設するように
してなることを特徴とする埋設杭の施工方法。7. The method for constructing a buried pile by the burying device according to claim 1, wherein the portion requiring protection is set at a portion corresponding to the predicted settlement layer, and a protection tube is put on the pile body to cover the portion requiring protection. The pile body is buried in the ground by covering the pile-side engagement portion and the protection tube-side engagement portion in an engaged state, and burying and propelling the protection tube with a burying propulsion device. After the pile is buried, the engagement between the pile-side engaging portion and the protective tube-side engaging portion is released, and the protective tube is raised and moved by a distance substantially equal to or longer than the predicted ground subsidence distance of the planned settlement layer. And burying the pile main body and the protective tube in the ground.
設杭の施工方法であって、杭本体に保護管を被せて保護
必要部分を覆い、杭側係合部と保護管側係合部を係合状
態にし、前記保護管を埋設推進装置で埋設推進すること
により前記杭本体を地盤に埋設して行き、埋設打止位置
まで埋設した後、杭側係合部と保護管側係合部の係合状
態を解除し、前記保護管の内側に配設された保護材注入
管から、瀝青部材やモルタル部材などの保護材を保護隙
間あるいは該杭本体と地盤との間に形成される地盤隙間
に注入充填し、前記保護必要部分に保護層を形成して前
記保護管を引き上げ移動させ、撤去することを特徴とす
る埋設杭の施工方法。8. A method for constructing a buried pile by the burying device according to claim 1 or 2, wherein the pile body is covered with a protective tube to cover a portion requiring protection, and a pile-side engaging portion and a protective-tube-side engaging portion. The pile body is buried in the ground by burying and propelling the protective tube with a burying propulsion device, and burying the ground to the burying position. The engagement state of the parts is released, and a protective material such as a bitumen member or a mortar member is formed from the protective material injection pipe disposed inside the protective tube to the protective gap or between the pile body and the ground. A method for constructing a buried pile, comprising: injecting and filling a gap in a ground; forming a protective layer on the portion requiring protection; lifting and moving the protective tube;
設杭の施工方法であって、該杭埋設前に、前記保護必要
部分に負の摩擦力を低減する瀝青部材などの滑り層や腐
食を防止する合成樹脂層などからなる保護層を形成して
なる杭本体に、保護管を被せて保護層を覆い、杭側係合
部と保護管側係合部を係合状態にし、前記保護管を埋設
推進装置で埋設推進することにより前記杭本体を地盤に
埋設して行き、埋設打止位置まで埋設したら杭側係合部
と保護管側係合部の係合状態を解除して、前記保護管を
地盤から引き抜くことを特徴とする埋設杭の施工方法。9. A method for constructing a buried pile by the burying device according to claim 1 or 3, wherein a slip layer or a corrosion of a bitumen member or the like for reducing a negative frictional force on the portion requiring protection before burying the pile. The pile body formed by forming a protective layer made of a synthetic resin layer or the like for preventing the overhang is covered with a protective tube to cover the protective layer, and the pile-side engaging portion and the protective tube-side engaging portion are engaged with each other, and the protection is performed. The pile body is buried in the ground by burying and propelling the pipe with a burying propulsion device, and when the pile is buried to the burial hitting position, the engagement state of the pile side engaging portion and the protection tube side engaging portion is released, A method of constructing a buried pile, wherein the protective tube is pulled out of the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000288267A JP2002097633A (en) | 2000-09-22 | 2000-09-22 | Buried pile, burying device and construction method for buried pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000288267A JP2002097633A (en) | 2000-09-22 | 2000-09-22 | Buried pile, burying device and construction method for buried pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002097633A true JP2002097633A (en) | 2002-04-02 |
Family
ID=18771881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000288267A Pending JP2002097633A (en) | 2000-09-22 | 2000-09-22 | Buried pile, burying device and construction method for buried pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002097633A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101680621B1 (en) * | 2016-04-20 | 2016-11-29 | 주식회사 정호 | Upper extension-type device for improving ground, improvement method of ground and construction method for enhancing horizontal bearing capacity of pile using the same |
| CN108226994A (en) * | 2018-01-05 | 2018-06-29 | 成都点点通科技有限公司 | Complex Mountain Earthquake Forecast System |
| CN112095580A (en) * | 2020-08-14 | 2020-12-18 | 温州大学 | Precast pile in area corroded by chloride ions, preparation method of precast pile and construction method for reducing negative friction resistance of precast pile |
-
2000
- 2000-09-22 JP JP2000288267A patent/JP2002097633A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101680621B1 (en) * | 2016-04-20 | 2016-11-29 | 주식회사 정호 | Upper extension-type device for improving ground, improvement method of ground and construction method for enhancing horizontal bearing capacity of pile using the same |
| CN108226994A (en) * | 2018-01-05 | 2018-06-29 | 成都点点通科技有限公司 | Complex Mountain Earthquake Forecast System |
| CN112095580A (en) * | 2020-08-14 | 2020-12-18 | 温州大学 | Precast pile in area corroded by chloride ions, preparation method of precast pile and construction method for reducing negative friction resistance of precast pile |
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