JP2641137B2 - Pressing device for cylindrical structure and method of driving cylindrical structure - Google Patents
Pressing device for cylindrical structure and method of driving cylindrical structureInfo
- Publication number
- JP2641137B2 JP2641137B2 JP10758495A JP10758495A JP2641137B2 JP 2641137 B2 JP2641137 B2 JP 2641137B2 JP 10758495 A JP10758495 A JP 10758495A JP 10758495 A JP10758495 A JP 10758495A JP 2641137 B2 JP2641137 B2 JP 2641137B2
- Authority
- JP
- Japan
- Prior art keywords
- tubular structure
- pressing
- cylindrical structure
- driving
- press
- 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
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、筒状構造物内の被押圧
物を押圧する筒状構造物用押圧装置及び筒状構造物を地
盤に打ち込むに際して筒状構造物内の被押圧物（地盤）
を押圧する筒状構造物の打ち込み方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device for a cylindrical structure which presses an object to be pressed in a cylindrical structure, and an object to be pressed in the cylindrical structure when the cylindrical structure is driven into the ground. ground)
The present invention relates to a method for driving a cylindrical structure that presses.
【０００２】[0002]
【従来の技術】一般に杭や矢板等の構造物の地盤への打
ち込み方法として、打撃、振動、圧入によるものが知ら
れている。上記打撃による構造物の打ち込みにおいて
は、打撃による大きな力で、先端抵抗及び側面抵抗に抗
して構造物を地盤中に打ち込むようになっているが、繰
り返し打撃を行う際に、大きな騒音と振動とが発生す
る。また、上記振動により構造物を打ち込む際には、構
造物を振動させることにより、先端抵抗及び側面抵抗を
減少させて構造物を地盤中に打ち込むようになっている
が、当然振動が連続的に発生するとともに騒音が発生す
る。2. Description of the Related Art Generally, as a method of driving a structure such as a pile or a sheet pile into the ground, hitting, vibration, or press-fitting is known. In driving the structure by the above-mentioned impact, the structure is driven into the ground with a large force by the impact against the tip resistance and the side resistance, but when the impact is repeated, large noise and vibration are generated. Occurs. Also, when driving a structure by the above-described vibration, the structure is vibrated to reduce the tip resistance and the side resistance, and the structure is driven into the ground. Generates noise.
【０００３】そこで、本出願人は、先に打ち込まれた構
造物から反力を取って、他の構造物を油圧により地盤中
に圧入する杭打ち機（圧入・引き抜き機）を既に提案し
た。上記圧入・引き抜き機は、既に打ち込まれた構造物
を掴持するクランプ部と、該クランプ部上に配置され、
油圧シリンダ等の動力装置、制御装置等を有する本体部
と、該本体部の前面に設けられて打ち込むべき構造物を
掴んだ状態で上下動自在な昇降部とを基本構成とするも
のである。そして、上記昇降部により構造物を圧入した
り、引き抜いたりできるようになっている。Accordingly, the present applicant has already proposed a pile driving machine (press-in / pull-out machine) which takes a reaction force from a previously driven structure and press-fits another structure into the ground by hydraulic pressure. The press-in / pull-out machine is disposed on a clamp portion for gripping a structure already driven, and on the clamp portion,
It has a basic configuration including a main body having a power unit such as a hydraulic cylinder, a control device, and the like, and a vertically movable unit provided on the front surface of the main body and capable of moving up and down while holding a structure to be driven. The structure allows the structure to be press-fitted or pulled out.
【０００４】上記クランプ部は、既に打ち込まれた構造
物を掴持することにより、構造物を打ち込む際もしくは
構造物を引く抜く際に、既に打ち込まれた構造物から反
力をとることができるようになっている。上記圧入・引
き抜き機による杭打ちは、打撃や振動による杭打ちとは
異なり、騒音及び振動が極めて低く、周囲への環境に配
慮したものとなっている。[0004] The above-mentioned clamp portion can grasp the already driven structure so as to take a reaction force from the already driven structure when driving the structure or pulling out the structure. It has become. The pile driving by the press-in / pull-out machine is very low in noise and vibration, unlike the pile driving by impact or vibration, and is environmentally friendly.
【０００５】また、上記圧入・引き抜き機においては、
固い地盤に構造物を打ち込む際に、構造物の圧入時の側
面抵抗を減少させるために、連続して構造物を圧入せず
に、圧入と引き抜きとを繰り返しながら、段階的に構造
物を地盤に圧入するようにしいる。すなわち、圧入時に
構造物側面に地盤の土砂が押し付けられて付着した状態
となり側面抵抗が高い状態となっているので、構造物を
一度引き上げることにより、構造物から土砂を引き剥が
すことで、側面抵抗を減少させることができ、圧入・引
き抜き機への負荷を低減することができる。In the above press-in / pull-out machine,
When driving a structure into hard ground, to reduce the side resistance at the time of press-fitting of the structure, do not continuously press-fit the structure. To press-fit. In other words, during press-fitting, the earth and sand of the ground is pressed against and adheres to the side of the structure, and the side resistance is high. Can be reduced, and the load on the press-in / pull-out machine can be reduced.
【０００６】[0006]
【発明が解決しようとする課題】ところで、鋼管等の筒
状構造物を圧入する際には、鋼管の外面において側面抵
抗が生じるとともに、筒状構造物内面においても側面抵
抗が生じることになる。そして、図５（Ａ）に示すよう
に、筒状構造物１内部においては、筒状構造物１の地盤
ｅへの圧入時に筒状構造物１により土砂ｅ’が囲まれた
状態で側面抵抗が生じるので、土砂ｅ’が外周側から下
方に押し付けられる状態、すなわち、上記圧入・引き抜
き機が筒状構造物１とともに筒状構造物１内部の土砂を
下方に押し付ける状態となり、筒状構造物１を圧入する
のに、大きな圧入力が必要となる。When a tubular structure such as a steel pipe is press-fitted, side resistance occurs on the outer surface of the steel pipe and side resistance also occurs on the inner surface of the tubular structure. Then, as shown in FIG. 5 (A), inside the tubular structure 1, when the tubular structure 1 is pressed into the ground e, the side surface resistance is surrounded by the cylindrical structure 1 in a state where the soil e ′ is surrounded by the tubular structure 1. Is caused, the state in which the earth and sand e ′ is pressed downward from the outer peripheral side, that is, the state in which the press-in / pull-out machine presses the earth and sand inside the cylindrical structure 1 together with the cylindrical structure 1 downward. A large press-fit is required to press-fit 1.
【０００７】従って、筒状構造物１の圧入に際しては、
上記圧入・引き抜き機に大きな負荷がかかり、圧入・引
き抜き機の寿命を縮めてしまうという問題点があった。
また、上述のように筒状構造物１を圧入と引き抜きとを
繰り返しながら、段階的に地盤に圧入することで、筒状
構造物１の外面と地盤ｅの土砂とを引き剥がすことは可
能であるが、筒状構造物１内部においては、筒状構造物
１を引き上げた際に、図５（Ｂ）に示すように、筒状構
造物１内部の土砂が筒状構造物１内に詰まった状態とな
り、筒状構造物１と一緒に引き上げられてしまう可能性
が高い。Accordingly, when the cylindrical structure 1 is press-fitted,
There is a problem that a large load is applied to the press-in / pull-out machine, which shortens the life of the press-in / pull-out machine.
Further, as described above, by repeatedly press-fitting and pulling out the tubular structure 1 and press-fitting it into the ground stepwise, it is possible to peel off the outer surface of the tubular structure 1 and the earth and sand of the ground e. However, when the tubular structure 1 is pulled up inside the tubular structure 1, as shown in FIG. 5B, the earth and sand inside the tubular structure 1 are clogged in the tubular structure 1. And it is highly likely that it will be pulled up together with the tubular structure 1.
【０００８】この場合には、再び筒状構造物を圧入した
際に、筒状構造物内面に土砂が付着したままの状態とな
っているので、筒状構造物内面における側面抵抗の減少
を望めない。[0008] In this case, when the tubular structure is press-fitted again, the soil remains on the inner surface of the tubular structure. Therefore, it is expected that the side resistance on the inner surface of the tubular structure is reduced. Absent.
【０００９】本発明は上記事情に鑑みてなされたもので
あり、筒状構造物を圧入と引き抜きとを繰り返しながら
段階的に地盤に圧入する際に、筒状構造物内面で生じる
側面抵抗を減少させることができる筒状構造物用押圧装
置及び筒状構造物の打ち込み方法を提供することを目的
とするものである。The present invention has been made in view of the above circumstances, and reduces side resistance generated on the inner surface of a tubular structure when the tubular structure is pressed into the ground stepwise while repeating press-fitting and pulling-out. It is an object of the present invention to provide a cylindrical structure pressing device and a method for driving a cylindrical structure.
【００１０】[0010]
【課題を解決するための手段】本発明の請求項１記載の
筒状構造物用押圧装置は、筒状構造物内に配置され、か
つ、該筒状構造物内面を外方に押圧することにより上記
筒状構造物に固定可能な固定手段と、該固定手段に設け
られ、かつ、被押圧物を上記筒状構造物の軸方向に沿っ
て押圧可能な押圧手段とを具備してなることを上記課題
の解決手段とした。According to a first aspect of the present invention, there is provided a pressing device for a tubular structure, wherein the pressing device is disposed in the tubular structure and presses the inner surface of the tubular structure outward. And a pressing means provided on the fixing means and capable of pressing an object to be pressed along the axial direction of the cylindrical structure. Is a means for solving the above problem.
【００１１】また、本発明の請求項２記載の筒状構造物
の打ち込み方法は、筒状構造物の打ち込みと引き上げと
を繰り返すことにより上記筒状構造物を地盤中に打ち込
む筒状構造物の打ち込み方法であって、上記筒状構造物
を引き上げてから上記筒状構造物を打ち込むに際し、上
記筒状構造物の引き上げ段階から上記筒状構造物を打ち
込む前の段階までの間に、上記筒状構造内の地盤表面
を、上記筒状構造物の軸方向に沿って上記筒状構造物に
対して移動可能な押圧部により押圧することを上記課題
の解決手段とした。According to a second aspect of the present invention, there is provided a method for driving a cylindrical structure into which the cylindrical structure is driven into the ground by repeatedly driving and lifting the cylindrical structure. In the driving method, when driving the cylindrical structure after pulling up the cylindrical structure, during the step of pulling up the cylindrical structure from the stage before driving the cylindrical structure, the cylinder The object of the present invention is to press the ground surface in the cylindrical structure by a pressing portion movable along the axial direction of the cylindrical structure with respect to the cylindrical structure.
【００１２】また、本発明の請求項３記載の筒状構造物
の打ち込み方法は、上記押圧部が、筒状構造物内に配置
されるとともに該筒状構造物内面を外方に押圧すること
により上記筒状構造物に固定可能な固定手段と、該固定
手段に設けられるとともに被押圧物を上記筒状構造物の
軸方向に押圧可能な押圧手段とを具備してなる筒状構造
物用押圧装置における押圧手段の先端部となるものであ
り、上記固定手段により上記筒状構造用押圧装置を上記
筒状構造物内に固定した状態で、上記押圧手段により上
記押圧部を上記筒状構造物の軸方向に沿って移動するこ
とで、上記筒状構造内の地盤表面を上記押圧部により押
圧することを上記課題の解決手段とした。According to a third aspect of the present invention, there is provided a method for driving a cylindrical structure, wherein the pressing portion is disposed in the cylindrical structure and presses the inner surface of the cylindrical structure outward. For a tubular structure, comprising: fixing means that can be fixed to the cylindrical structure by the above, and pressing means provided on the fixing means and capable of pressing an object to be pressed in the axial direction of the cylindrical structure. In the state where the pressing device for a tubular structure is fixed in the tubular structure by the fixing means, the pressing portion is used as the distal end portion of the pressing means in the pressing device. The object of the present invention is to press the ground surface in the tubular structure with the pressing portion by moving the object along the axial direction.
【００１３】[0013]
【作用】上記請求項１記載の構成によれば、上記固定手
段により筒状構造物内面を外方に押圧することで、筒状
構造物用押圧装置が、筒状構造物内に固定された状態と
なる。そして、押圧装置が筒状構造物内に固定された状
態で押圧手段を作動させることにより、被押圧物を筒状
構造物の軸方向に沿って押圧して移動させることができ
る。According to the structure of the first aspect, the pressing device for the tubular structure is fixed in the tubular structure by pressing the inner surface of the tubular structure outward by the fixing means. State. By operating the pressing means in a state where the pressing device is fixed in the tubular structure, the pressed object can be pressed and moved along the axial direction of the tubular structure.
【００１４】従って、上記押圧装置を用いれば、筒状構
造物を圧入と引き抜きとを繰り返しながら段階的に地盤
に圧入するために筒状構造物を引き上げる際に、筒状構
造物内の地盤の表面を下方に押圧することができ、筒状
構造物とともに筒状構造物内の土砂が引き上げられるの
を防止して、筒状構造物内面と土砂とを確実に引き剥が
し、筒状構造物内面における側面抵抗を減少させること
ができる。Therefore, by using the above-described pressing device, when the tubular structure is pulled up in order to press-fit the tubular structure into the ground in a stepwise manner while repeating press-fitting and pulling-out, the ground in the tubular structure is lifted. The surface can be pressed downward, preventing the earth and sand in the tubular structure from being lifted together with the cylindrical structure, and reliably peeling off the inner surface of the tubular structure and the earth and sand, Side resistance can be reduced.
【００１５】また、上記請求項２記載の構成によれば、
筒状構造物を圧入と引き抜きとを繰り返しながら段階的
に地盤に圧入するために筒状構造物を引き上げる際に、
上記押圧部により筒状構造物内の地盤表面を押圧して筒
状構造物とともに筒状構造物内の土砂が引き上げられる
のを防止し、筒状構造物内面と土砂とを確実に引き剥が
すことができる。According to the second aspect of the present invention,
When pulling up a tubular structure to press-fit it into the ground step by step while repeatedly pressing and pulling the tubular structure,
The above pressing portion presses the ground surface in the tubular structure to prevent the earth and sand in the tubular structure from being pulled up together with the tubular structure, and to reliably peel off the inner surface of the tubular structure and the earth and sand. Can be.
【００１６】または、筒状構造物を圧入と引き抜きとを
繰り返しながら段階的に地盤に圧入するために筒状構造
物を引き上げた際に、筒状構造物とともに引き上げれら
た筒状構造物内の土砂を下方に押圧して落下させ、筒状
構造物内面と土砂とを確実に引き剥がすことができる。
従って、筒状構造物の圧入に際して、筒状構造物内面に
おける側面抵抗を減少させることができる。Alternatively, when the tubular structure is raised in order to press it into the ground in a stepwise manner while repeating press-fitting and pulling-out of the tubular structure, when the tubular structure is pulled up together with the tubular structure, Can be pressed down and dropped, and the inner surface of the tubular structure and the soil can be reliably peeled off.
Therefore, at the time of press-fitting the tubular structure, the side resistance on the inner surface of the tubular structure can be reduced.
【００１７】また、上記請求項３記載の構成によれば、
筒状構造物の圧入に際して、上記請求項１記載の筒状構
造物用押圧装置と同様の構成を有する押圧装置を用いる
ことにより、上記請求項２記載の構成と同様に、筒状構
造物内面における側面抵抗を減少させることができる。According to the third aspect of the present invention,
When the cylindrical structure is press-fitted, by using a pressing device having the same configuration as the pressing device for a cylindrical structure according to the first aspect, the inner surface of the cylindrical structure is formed in the same manner as the configuration according to the second aspect. Side resistance can be reduced.
【００１８】[0018]
【実施例】以下に、本発明の一実施例の筒状構造物用押
圧装置及び筒状構造物の打ち込み方法を図面を参照して
説明する。図１ないし図３はこの実施例の筒状構造物用
押圧装置２を示すものであり、図４はこの実施例の筒状
構造物１の打ち込み方法の工程を示すものである。な
お、この実施例の筒状構造物１の打ち込みにおいては、
既に打ち込まれた構造物から反力を取って、構造物の圧
入及び引き抜きを行う上述の圧入・引き抜き機（図示
略）を用いるようになっている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cylindrical structure pressing device and a method for driving a cylindrical structure according to an embodiment of the present invention. 1 to 3 show a pressing device 2 for a tubular structure according to this embodiment, and FIG. 4 shows steps of a method for driving the tubular structure 1 according to this embodiment. In the driving of the tubular structure 1 of this embodiment,
The above-described press-in / pull-out machine (not shown) that takes in a reaction force from a structure already driven in and presses in and pulls out the structure is used.
【００１９】図１ないし図３に示すように筒状構造物用
押圧装置２は、筒状構造物１（図３に図示）内において
筒状構造物１内面を外方に押圧することにより、押圧装
置２を筒状構造物に固定するクランプシリンダ３…と、
上記クランプシリンダ３…により、押圧装置２が筒状構
造物１内に固定された状態で、筒状構造物１内の被押圧
物を筒状構造物１の軸方向に沿って押圧する押圧シリン
ダ４（図２及び図３に図示）と、上記クランプシリンダ
３…及び押圧シリンダ４を支持する本体部５と、本体部
５に接続されて油圧、電力、信号等を供給する配管６
（図３に図示）と、上記本体部５内に設けられて上記ク
ランプシリンダ３…及び押圧シリンダ４を制御する図示
しない制御部とを有するものである。As shown in FIGS. 1 to 3, the pressing device 2 for a tubular structure presses the inner surface of the tubular structure 1 outward in the tubular structure 1 (shown in FIG. 3). A clamp cylinder 3 for fixing the pressing device 2 to the tubular structure;
A pressing cylinder that presses an object to be pressed in the cylindrical structure 1 along the axial direction of the cylindrical structure 1 in a state where the pressing device 2 is fixed in the cylindrical structure 1 by the clamp cylinders 3. 4 (shown in FIGS. 2 and 3), a main body 5 supporting the clamp cylinders 3... And the pressing cylinder 4, and a pipe 6 connected to the main body 5 and supplying hydraulic pressure, electric power, signals, and the like.
(Shown in FIG. 3), and a control unit (not shown) that is provided in the main body unit 5 and controls the clamp cylinders 3...
【００２０】上記クランプシリンダ３…は、筒状構造物
３の内面に当接する当接板３ａ…と、シリンダ部３ｂ
と、先端部が上記当接板３ａに接続される図示いないピ
ストン部とからなるものである。そして、クランプシリ
ンダ３…は、上記本体部５の中心を中心とする円の半径
方向に沿って放射状に延出した状態で本体部５に接続さ
れいるとともに、隣接するクランプシリンダ３…同士が
なす角度が等しくされている。この実施例では、クラン
プシリンダ３…が１２０度毎に３本配置された状態とな
っている。The clamp cylinders 3 are composed of a contact plate 3a, which contacts the inner surface of the tubular structure 3, and a cylinder portion 3b.
And a piston (not shown) whose tip is connected to the contact plate 3a. The clamp cylinders 3 are connected to the main body 5 in a state of extending radially along a radial direction of a circle centered on the center of the main body 5, and the adjacent clamp cylinders 3 form one another. The angles are equal. In this embodiment, three clamp cylinders 3 are arranged every 120 degrees.
【００２１】上記当接板３ａは、円弧状に形成され、そ
の外面が筒状構造物１の内面に沿って面で当接可能とな
っている。このような構成を有するクランプシリンダ３
…は、図３に示すように、押圧装置２を筒状構造物１内
に配置した状態で、油圧により図示しないピストン部を
延出した状態とすることにより、三つの当接板３ａが、
筒状構造物１内面に当接した状態となるようになってい
る。そして、当接板３ａを油圧により筒状構造物１内面
に押し付けることにより、当接板３ａ外面と筒状構造物
１内面とに大きな摩擦力が発生し、押圧装置２が筒状構
造物１に固定した状態となるようになっている。The contact plate 3 a is formed in an arc shape, and the outer surface thereof can be brought into contact with the inner surface of the tubular structure 1. Clamp cylinder 3 having such a configuration
.., As shown in FIG. 3, in a state where the pressing device 2 is arranged in the tubular structure 1 and a piston (not shown) is extended by hydraulic pressure, so that the three contact plates 3 a
It is configured to be in contact with the inner surface of the tubular structure 1. By pressing the contact plate 3a against the inner surface of the tubular structure 1 by hydraulic pressure, a large frictional force is generated between the outer surface of the contact plate 3a and the inner surface of the tubular structure 1, and the pressing device 2 It is designed to be fixed in the state.
【００２２】上記押圧シリンダ４は、円板状の押圧部４
ａと、シリンダ部４ｂと、先端部が押圧部３ａに接続さ
れるピストン部４ｃとからなるものである。また、上記
押圧シリンダ４は、筒状構造物１を垂直に立てるととも
にクランプシリンダ３…を水平にした状態で、クランプ
シリンダ３…により押圧装置２を筒状構造物１に固定し
た際に、本体部５から鉛直方向に沿って延出するように
本体部５の下面に接続されている。The pressing cylinder 4 includes a disc-shaped pressing portion 4.
a, a cylinder part 4b, and a piston part 4c whose tip is connected to the pressing part 3a. When the pressing device 2 is fixed to the tubular structure 1 by the clamp cylinders 3 in a state where the tubular structure 1 is set up vertically and the clamp cylinders 3 are kept horizontal, It is connected to the lower surface of the main body 5 so as to extend from the part 5 along the vertical direction.
【００２３】以上のような構成により、この実施例の押
圧装置２は、クランプシリンダ３…により筒状構造物１
内に固定された状態、すなわち、筒状構造物１から反力
を取った状態で、押圧シリンダ４の押圧部４ａにより、
筒状構造物１内の被押圧物（図示略）を筒状構造物１の
軸方向に沿って押圧して移動させることができるように
なっている。With the above-described configuration, the pressing device 2 of this embodiment uses the cylindrical structures 1 by the clamp cylinders 3.
In the state fixed inside, that is, in the state where the reaction force is taken from the tubular structure 1, the pressing portion 4a of the pressing cylinder 4
An object to be pressed (not shown) in the tubular structure 1 can be moved by being pressed along the axial direction of the tubular structure 1.
【００２４】次に、上述の押圧装置２を用いた筒状構造
物１の打ち込み方法を説明する。この実施例の筒状構造
物１の打ち込み方法においては、上記圧入・引き抜き機
の昇降部（図示略）に筒状構造物１を掴ませた状態で、
昇降部を下降させることにより筒状構造物１を圧入し、
次いで、昇降部を下降させた距離よりも短い距離だけ上
昇させることにより、筒状構造物１を完全に引き抜かな
い状態で引き上げ、再び昇降部を上昇させた距離よりも
長く下降させることにより筒状構造物をさらに圧入する
ことを繰り返すようになっている。Next, a method of driving the tubular structure 1 using the above-described pressing device 2 will be described. In the method of driving the tubular structure 1 of this embodiment, the tubular structure 1 is gripped by the lifting / lowering portion (not shown) of the press-in / draw-out machine.
The cylindrical structure 1 is press-fitted by lowering the elevating part,
Next, the cylindrical structure 1 is pulled up in a state where it is not completely pulled out by raising the elevating unit by a distance shorter than the distance by which it is lowered, and then lowering the elevating unit again longer than the distance by which the cylindrical structure is raised. The press-fitting of the structure is repeated.
【００２５】すなわち、筒状構造物１の圧入と引き抜き
とを繰り返しながら、段階的に筒状構造物１を打ち込む
ようになっている。そして、筒状構造物１の打ち込みと
引き上げとを繰り返す際に、上記昇降部の上下動ととも
に以下の処理を行うようになっている。まず、筒状構造
物１を最初に圧入した際に、図４（Ａ）に示すように筒
状構造物１内に、押圧部４ａを下にした状態で押圧装置
２を挿入する。That is, the tubular structure 1 is driven in a stepwise manner while the press-in and pull-out of the tubular structure 1 are repeated. When repeating the driving and lifting of the tubular structure 1, the following processing is performed together with the vertical movement of the elevating unit. First, when the cylindrical structure 1 is first press-fitted, the pressing device 2 is inserted into the cylindrical structure 1 with the pressing portion 4a down as shown in FIG.
【００２６】この際には、クランプシリンダ３…及び押
圧シリンダ４を収縮し、押圧装置２が押圧部４ａを下に
して、筒状構造物１内の地盤ｅの表面に載置された状態
とする。次に、筒状構造物１を引き上げる前に、クラン
プシリンダ３…を油圧により伸張し、当接板３ａ…の外
面を筒状構造物１の内面に当接させて押圧した状態とす
る。At this time, the clamp cylinder 3... And the pressing cylinder 4 are contracted, and the pressing device 2 is placed on the surface of the ground e in the tubular structure 1 with the pressing portion 4a down. I do. Next, before the tubular structure 1 is pulled up, the clamp cylinders 3 are extended by hydraulic pressure, and the outer surfaces of the contact plates 3a are brought into contact with the inner surface of the tubular structure 1 to be pressed.
【００２７】すなわち、クランプシリンダ３により押圧
装置２を筒状構造物１に固定した状態とする。次に、筒
状構造物１を引き上げる際に、油圧により押圧シリンダ
４の押圧部４ａを筒状構造物１内の地盤ｅ表面に押し付
ける。そして、筒状構造物１が引き上げられて上昇する
とともに、図４（Ｂ）に示すように、筒状構造物１内に
固定された押圧装置２が上昇することになるが、押圧シ
リンダ４はそのストロークが許す限り、下方に延出して
押圧部４ａが筒状構造物２内の地盤ｅ表面を押圧したま
まの状態となる。That is, the pressing device 2 is fixed to the tubular structure 1 by the clamp cylinder 3. Next, when the tubular structure 1 is pulled up, the pressing portion 4 a of the pressing cylinder 4 is pressed against the surface of the ground e in the tubular structure 1 by hydraulic pressure. Then, as the tubular structure 1 is pulled up and rises, as shown in FIG. 4B, the pressing device 2 fixed in the tubular structure 1 rises. As long as the stroke permits, the pressing portion 4a extends downward and remains in a state of pressing the surface of the ground e in the tubular structure 2.
【００２８】この際には、上述のように筒状構造物１を
引き上げることにより筒状構造物２内の土砂ｅ’が筒状
構造物１とともに上昇しようとするが、筒状構造物１か
ら反力を取った押圧シリンダ４の押圧部４ａにより、筒
状構造物１内の地盤ｅ表面が筒状構造物１の軸方向に沿
って下方に押圧されているので、筒状構造物１内の土砂
ｅ’は、筒状構造物１内面から引き剥がされてそのまま
地盤ｅ内に残った状態となる。At this time, the earth and sand e ′ in the tubular structure 2 tends to rise together with the tubular structure 1 by pulling up the tubular structure 1 as described above. The surface of the ground e in the cylindrical structure 1 is pressed downward along the axial direction of the cylindrical structure 1 by the pressing portion 4a of the pressing cylinder 4 that has taken the reaction force. Is removed from the inner surface of the tubular structure 1 and remains in the ground e as it is.
【００２９】従って、筒状構造物１の内面においても、
外面と同様に地盤ｅの土砂ｅ’が引き剥がされた状態と
なる。次に、再び、筒状構造物１を前回より深く圧入す
る。この際には、クランプシリンダ３…を収縮して、押
圧装置２の筒状構造物１への固定を解除するとともに、
押圧シリンダ４を伸縮させて、筒状構造物１の引き上げ
とともに、上昇した押圧装置２（本体部５及びクランプ
シリンダ３…）を下降させて、図４（Ｃ）に示すよう
に、最初の筒状構造物２の圧入時と同様の状態とする。Therefore, also on the inner surface of the tubular structure 1,
As in the case of the outer surface, the soil e ′ of the ground e is in a state of being peeled off. Next, the tubular structure 1 is pressed again deeper than the previous time. At this time, the clamp cylinders 3 are contracted to release the fixing of the pressing device 2 to the tubular structure 1, and
The pressing cylinder 4 is expanded and contracted to pull up the tubular structure 1 and the raised pressing device 2 (the main body 5 and the clamp cylinder 3...) Is lowered, as shown in FIG. The state is the same as that at the time of press-fitting of the tubular structure 2.
【００３０】また、筒状構造物１を再び圧入した際に
は、筒状構造物１の内面と外面との両方において筒状構
造物１から土砂が引き剥がされた状態となっているの
で、筒状構造物１の内面と外面との両方において側面抵
抗が減少し、筒状構造物１を地盤ｅに圧入するための圧
入力を低減することができる。When the tubular structure 1 is press-fitted again, the earth and sand are peeled off from the tubular structure 1 on both the inner surface and the outer surface of the tubular structure 1. Side resistance is reduced on both the inner surface and the outer surface of the tubular structure 1, and press-fitting for press-fitting the tubular structure 1 into the ground e can be reduced.
【００３１】そして、再び、筒状構造物２を所定の深さ
に圧入するまで、引き上げと圧入とを繰り返すととも
に、押圧装置２の筒状構造物１への固定及び地盤ｅ表面
の押圧と、それらの解除とを繰り返し行うことになる。
なお、圧入・引き抜き機による筒状構造物の引き上げ及
び圧入と、押圧装置２の筒状構造物への固定、地盤ｅ表
面の押圧及びそれらの解除とは、上記図示しない制御部
により連動して制御される。Then, the lifting and press-fitting are repeated until the tubular structure 2 is again press-fitted to a predetermined depth, and the pressing device 2 is fixed to the tubular structure 1 and the surface of the ground e is pressed. Such cancellation is repeatedly performed.
The lifting and press-in of the tubular structure by the press-in / pull-out machine, and the fixing of the pressing device 2 to the tubular structure, the pressing of the surface of the ground e, and the release thereof are interlocked by the control unit (not shown). Controlled.
【００３２】以上のように、この実施例の筒状構造物用
押圧装置２及びこれを用いた筒状構造物１の打ち込み方
法によれば、筒状構造物１を打ち込むに際し、圧入と引
き上げとを繰り返し行うことで、筒状構造物１の外面側
の側面抵抗だけではなく、内面側の側面抵抗も減少させ
ることができるので、筒状構造物１の打ち込み時の圧入
力を減少させることができる。As described above, according to the cylindrical structure pressing device 2 of this embodiment and the method of driving the cylindrical structure 1 using the same, when the cylindrical structure 1 is driven, press-fitting and lifting are performed. Is repeated, not only the side surface resistance on the outer surface side of the tubular structure 1 but also the side surface resistance on the inner surface side can be reduced, so that the press-in force at the time of driving the tubular structure 1 can be reduced. it can.
【００３３】従って、圧入・引き抜き機にかかる負荷を
低減でき、圧入・引き抜き機の寿命の延長等によりコス
トダウンを図ることができる。また、上述のように押圧
装置２は、圧入時に、毎回、筒状構造物２内の地盤ｅ表
面に載置された状態となるので、筒状構造物１の長さに
合わせて押圧シリンダ４のストロークを長くする必要は
なく、低コストで製造することができる。Therefore, the load on the press-in / pull-out machine can be reduced, and the cost can be reduced by extending the life of the press-in / pull-out machine. Further, as described above, since the pressing device 2 is placed on the surface of the ground e in the tubular structure 2 every time the press-fitting is performed, the pressing cylinder 4 is adjusted to the length of the tubular structure 1. It is not necessary to lengthen the stroke, and it can be manufactured at low cost.
【００３４】なお、上記実施例においては、押圧装置２
にクランプシリンダ３が三本設けられているものとした
が、クランプシリンダ３の数はクランプシリンダ３によ
り押圧装置２を筒状構造物１に固定できれば良く、２本
以上ならば特に限定されるものではない。また、上記ク
ランプシリンダ３を本発明の筒状構造物用押圧装置の固
定手段としたが、固定手段は、筒状構造物内面を外側に
押圧することにより、押圧装置を筒状構造物に固定可能
とするものならば、どのような構成のものでも良く、例
えば、拡径可能な環状のものでも良い。In the above embodiment, the pressing device 2
Although three clamp cylinders 3 are provided in the present embodiment, the number of clamp cylinders 3 is not particularly limited as long as the pressing device 2 can be fixed to the cylindrical structure 1 by the clamp cylinders 3. is not. Further, the clamp cylinder 3 is used as a fixing means of the pressing device for a tubular structure of the present invention, but the fixing means fixes the pressing device to the tubular structure by pressing an inner surface of the tubular structure outward. Any configuration is possible as long as it is possible, and for example, an annular shape whose diameter can be expanded may be used.
【００３５】すなわち、拡径可能な環状の部材を縮めた
状態で、筒状構造物１内に配置した後に環状の部材を拡
径することにより、環状の部材が筒状構造物１内面を外
側に押圧して、押圧装置２を筒状構造物１に固定するこ
とができる。また、本発明の押圧手段となる押圧シリン
ダ４は、特に一本である必要はなく、複数本としても良
い。That is, the annular member is arranged inside the tubular structure 1 in a state in which the annular member whose diameter can be expanded is contracted, and then the annular member is enlarged in diameter. To fix the pressing device 2 to the tubular structure 1. The pressing cylinder 4 serving as the pressing means of the present invention does not need to be particularly one, but may be plural.
【００３６】また、上記実施例においては、固定手段と
なるクランプシリンダ３及び押圧手段となる押圧シリン
ダ４を油圧により作動するものとしたが、必要な押圧力
を満足できるものならば、油圧以外に水圧を用いたり、
電磁力を用いたり、その他モータ等の駆動力を用いたり
するものとしても良い。また、上記実施例においては、
押圧装置２を筒状構造物１の地盤への打ち込みに用いた
が、押圧装置２は、それ以外にも有効に用いることがで
きる。In the above embodiment, the clamp cylinder 3 serving as the fixing means and the pressing cylinder 4 serving as the pressing means are operated by hydraulic pressure. Using water pressure,
It is also possible to use an electromagnetic force or other driving force of a motor or the like. In the above embodiment,
Although the pressing device 2 is used for driving the tubular structure 1 into the ground, the pressing device 2 can be effectively used for other purposes.
【００３７】例えば、上記実施例においては、圧入・引
き抜き機を用いて筒状構造物１を引き上げるものとした
が、上記押圧シリンダ４が充分な押圧力を有するものな
らば、上述のようにクランプシリンダ３…により押圧装
置２を筒状構造物１に固定した状態で、押圧シリンダ４
を伸張することにより、圧入・引き抜き機を用いずに、
筒状構造物１を引き上げることができる。すなわち、押
圧装置２を筒状構造物１の引き抜き機として用いること
ができる。For example, in the above-described embodiment, the cylindrical structure 1 is pulled up by using the press-in / pull-out machine. However, if the pressing cylinder 4 has a sufficient pressing force, the clamp In a state where the pressing device 2 is fixed to the tubular structure 1 by the cylinders 3, the pressing cylinder 4
By using a press-in / pull-out machine,
The tubular structure 1 can be pulled up. That is, the pressing device 2 can be used as a pulling machine for the tubular structure 1.
【００３８】また、上記押圧装置２を排土が溜まった下
水管内に配置すれば、押圧手段により排土を押圧して移
動することができ、上記押圧装置２を筒状構造物１内の
排土装置、目詰まり排除装置等として使用することがで
きる。この際には、筒状構造物１が垂直である必要はな
く、筒状構造物１が垂直以外の角度、例えば、水平とし
ても押圧装置２を使用することができる。Further, if the pressing device 2 is arranged in a sewer pipe in which the discharged soil is accumulated, the discharging device can be pressed and moved by the pressing means. It can be used as a soil device, a clogging removing device, and the like. In this case, the tubular structure 1 does not need to be vertical, and the pressing device 2 can be used even when the tubular structure 1 is set at an angle other than vertical, for example, horizontal.
【００３９】また、上記実施例の筒状構造物１の打ち込
み方法においては、筒状構造物１の打ち込みに際し、上
記押圧装置２を使用するものとしたが、必ずしも上記構
成の押圧装置２を用いる必要はなく、筒状構造物１を引
き上げた際に、筒状構造物１内の土砂を、筒状構造物１
の軸方向に沿って移動して押圧する押圧部を有するもの
ならば良い。In the method for driving the tubular structure 1 of the above embodiment, the pressing device 2 is used for driving the tubular structure 1, but the pressing device 2 having the above configuration is not necessarily used. There is no necessity. When the tubular structure 1 is pulled up, the sediment in the tubular structure 1 is removed.
What is necessary is just to have the press part which moves along the axial direction of this and presses.
【００４０】また、上記実施例の筒状構造物１の打ち込
み方法においては、筒状構造物１の引き上げとともに、
押圧装置２により筒状構造物１内の地盤ｅの表面を下方
に押圧するものとしたが、本発明においては、筒状構造
物１を再び圧入するまでに、前の圧入時に筒状構造物１
内面に付着した土砂を引き剥がすことができれば良く、
例えば、筒状構造物１を引き上げることにより、筒状構
造物１内の地盤の土砂が引き上げられた後に、筒状構造
物１内の土砂を下方に押圧して落下させるようにしても
良い。In the method for driving the tubular structure 1 of the above embodiment, the lifting of the tubular structure 1
Although the surface of the ground e in the tubular structure 1 is pressed downward by the pressing device 2, in the present invention, the tubular structure 1 is pressed at the time of the previous press-fitting until the tubular structure 1 is press-fitted again. 1
It is only necessary to be able to peel off the earth and sand attached to the inner surface,
For example, by pulling up the tubular structure 1, the soil in the tubular structure 1 may be pulled down after the soil in the tubular structure 1 is lifted, and then may be pressed downward to drop.
【００４１】また、筒状構造物１の打ち込みと引き上げ
に際しては、必ずしも上述の圧入・引き抜き機を用いる
必要はなく、他の杭打ち機や引き抜き機を用いるものと
しても良い。この場合にも筒状構造物１の打ち込みに際
して、筒状構造物１内の側面抵抗を低減して、筒状構造
物１の打ち込みの効率化を図ることができる。また、上
記筒状構造物１は、鋼管、コンクリート構造物等からな
る筒状の構造物ならばどのような構造物でも良い。When the tubular structure 1 is driven and pulled up, it is not always necessary to use the above-described press-in / pull-out machine, and another pile driving machine or pull-out machine may be used. Also in this case, when driving the tubular structure 1, the side resistance in the tubular structure 1 can be reduced, and the efficiency of the driving of the tubular structure 1 can be improved. The tubular structure 1 may be any structure as long as it is a tubular structure made of a steel pipe, a concrete structure, or the like.
【００４２】また、筒状構造物１の断面形状は、円形に
限られるものではなく、四角状やその他形状でも良い。
なお、筒状構造物１の断面形状を円形以外の形状とした
場合には、押圧シリンダ４の押圧部４ａの形状も筒状構
造物１の断面形状に対応した円板状以外の形状とするこ
とが好ましい。The cross-sectional shape of the tubular structure 1 is not limited to a circle, but may be a square or other shapes.
When the cross-sectional shape of the tubular structure 1 is a shape other than a circle, the shape of the pressing portion 4a of the pressing cylinder 4 is also a shape other than the disc shape corresponding to the cross-sectional shape of the cylindrical structure 1. Is preferred.
【００４３】[0043]
【発明の効果】上記請求項１記載の筒状構造物用押圧装
置によれば、固定手段により押圧装置を筒状構造物に固
定して、筒状構造物から反力を取った状態で、押圧手段
により効率良く筒状構造物内の被押圧物を押圧して移動
することができる。また、筒状構造物を圧入と引き抜き
とを繰り返しながら段階的に地盤に圧入するために、上
記押圧装置を用いることにより、筒状構造物を引き上げ
る際に、筒状構造物内の地盤の表面を下方に押圧するこ
とができ、筒状構造物とともに筒状構造物内の土砂が引
き上げられるのを防止して、筒状構造物内面と土砂とを
確実に引き剥がし、筒状構造物内面における側面抵抗を
減少させることができる。従って、上記押圧装置を筒状
構造物の打ち込みに用いれば、筒状構造物の打ち込みに
必要な力を低減して、筒状構造物の打ち込みの効率化、
低コスト化を図ることができる。According to the pressing device for a tubular structure according to the first aspect of the present invention, the pressing device is fixed to the tubular structure by the fixing means, and the reaction force is removed from the tubular structure. By the pressing means, the pressed object in the cylindrical structure can be efficiently pressed and moved. Further, in order to press-fit the tubular structure into the ground stepwise while repeating press-fitting and pulling-out, by using the pressing device, when pulling up the tubular structure, the surface of the ground in the tubular structure is raised. Can be pressed downward, preventing the earth and sand in the tubular structure from being pulled up together with the tubular structure, reliably peeling off the inner surface of the tubular structure and the earth and sand, Lateral resistance can be reduced. Therefore, if the pressing device is used for driving a cylindrical structure, the force required for driving the cylindrical structure is reduced, and the efficiency of driving the cylindrical structure is improved.
Cost reduction can be achieved.
【００４４】また、上記請求項２記載の筒状構造物の打
ち込み方法によれば、上記請求項１記載の押圧装置を用
いた場合と同様に、筒状構造物を圧入と引き抜きとを繰
り返しながら段階的に地盤に圧入するために、筒状構造
物を引き上げる際に、筒状構造物内の地盤の表面を下方
に押圧して、筒状構造物内面における側面抵抗を減少さ
せることができる。According to the method for driving a tubular structure according to the second aspect of the present invention, as in the case of using the pressing device according to the first aspect, the tubular structure is repeatedly pressed into and pulled out. When the tubular structure is pulled up in order to press it into the ground in a stepwise manner, the surface of the ground in the tubular structure is pressed downward, so that the side resistance on the inner surface of the tubular structure can be reduced.
【００４５】また、上記請求項３記載の筒状構造物の打
ち込み方法によれば、筒状構造物の打ち込みに際して、
上記請求項１記載の筒状構造物用押圧装置と同様の構成
を有する押圧装置を用いることにより、上記請求項２記
載の筒状構造物の打ち込み方法と同様に、筒状構造物の
打ち込みに際して、筒状構造物内面における側面抵抗を
減少させることができ、筒状構造物の打ち込みの効率
化、低コスト化を図ることができる。Further, according to the method for driving a cylindrical structure according to the third aspect, when driving the cylindrical structure,
By using a pressing device having the same configuration as the pressing device for a cylindrical structure according to the first aspect, the driving method for the cylindrical structure can be performed similarly to the method for driving the cylindrical structure according to the second aspect. In addition, the side resistance on the inner surface of the tubular structure can be reduced, and the efficiency of the driving of the tubular structure and the cost can be reduced.
【図１】本発明の一実施例の筒状構造物用押圧装置を示
す平面図である。FIG. 1 is a plan view showing a pressing device for a tubular structure according to one embodiment of the present invention.
【図２】上記実施例の筒状構造物用押圧装置を示す側面
図である。FIG. 2 is a side view showing the pressing device for a tubular structure of the embodiment.
【図３】上記実施例の筒状構造物内に配置された上記押
圧装置の側面図である。FIG. 3 is a side view of the pressing device disposed in the tubular structure of the embodiment.
【図４】上記実施例の筒状構造物の打ち込み方法の工程
を説明するための筒状構造物内の上記押圧装置を示す側
面図である。FIG. 4 is a side view showing the pressing device in the tubular structure for explaining the steps of the method for driving the tubular structure of the embodiment.
【図５】従来の筒状構造物の打ち込み方法を説明するた
めの断面図である。FIG. 5 is a cross-sectional view for explaining a conventional method of driving a tubular structure.
１ 筒状構造物 ２ 筒状構造物用押圧装置 ３ クランプシリンダ（固定手段） ４ 押圧シリンダ（押圧手段） ４ａ 押圧部 ｅ 地盤 ｅ’ 筒状構造物内の地盤の土砂 Reference Signs List 1 cylindrical structure 2 cylindrical structure pressing device 3 clamp cylinder (fixing means) 4 pressing cylinder (pressing means) 4a pressing portion e ground e 'soil of soil in cylindrical structure
Claims (3)
構造物内面を外方に押圧することにより上記筒状構造物
に固定可能な固定手段と、 該固定手段に設けられ、かつ、被押圧物を上記筒状構造
物の軸方向に沿って押圧可能な押圧手段とを具備してな
ることを特徴とする筒状構造物用押圧装置。1. A fixing means disposed in a cylindrical structure, and fixed to the cylindrical structure by pressing an inner surface of the cylindrical structure outward, provided on the fixing means; And a pressing means for pressing an object to be pressed along the axial direction of the tubular structure.
り返すことにより上記筒状構造物を地盤中に打ち込む筒
状構造物の打ち込み方法であって、 上記筒状構造物を引き上げてから上記筒状構造物を打ち
込むに際し、上記筒状構造物の引き上げ段階から上記筒
状構造物を打ち込む前の段階までの間に、 上記筒状構造内の地盤表面を、上記筒状構造物の軸方向
に沿って上記筒状構造物に対して移動可能な押圧部によ
り押圧することを特徴とする筒状構造の打ち込み方法。2. A method for driving a cylindrical structure into a ground by repeatedly driving and lifting the cylindrical structure, wherein the cylindrical structure is pulled up and then the cylindrical structure is lifted. When driving the tubular structure, during the period from the step of pulling up the tubular structure to the stage before driving the tubular structure, the ground surface in the tubular structure is moved in the axial direction of the tubular structure. A method for driving a cylindrical structure, characterized in that the cylindrical structure is pressed by a movable pressing portion along the cylindrical structure.
るとともに該筒状構造物内面を外方に押圧することによ
り上記筒状構造物に固定可能な固定手段と、該固定手段
に設けられるとともに被押圧物を上記筒状構造物の軸方
向に押圧可能な押圧手段とを具備してなる筒状構造物用
押圧装置における押圧手段の先端部となるものであり、 上記固定手段により上記筒状構造用押圧装置を上記筒状
構造物内に固定した状態で、上記押圧手段により上記押
圧部を上記筒状構造物の軸方向に沿って移動すること
で、上記筒状構造内の地盤表面を上記押圧部により押圧
することを特徴とする請求項２記載の筒状構造物の打ち
込み方法。3. The fixing means is disposed within the tubular structure, and can be fixed to the tubular structure by pressing an inner surface of the tubular structure outward, and the fixing means. And a pressing means capable of pressing the object to be pressed in the axial direction of the tubular structure. By moving the pressing portion along the axial direction of the cylindrical structure by the pressing means in a state in which the pressing device for a cylindrical structure is fixed in the cylindrical structure, The method for driving a cylindrical structure according to claim 2, wherein the ground surface is pressed by the pressing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10758495A JP2641137B2 (en) | 1995-05-01 | 1995-05-01 | Pressing device for cylindrical structure and method of driving cylindrical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10758495A JP2641137B2 (en) | 1995-05-01 | 1995-05-01 | Pressing device for cylindrical structure and method of driving cylindrical structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08302686A JPH08302686A (en) | 1996-11-19 |
| JP2641137B2 true JP2641137B2 (en) | 1997-08-13 |
Family
ID=14462874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10758495A Expired - Lifetime JP2641137B2 (en) | 1995-05-01 | 1995-05-01 | Pressing device for cylindrical structure and method of driving cylindrical structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641137B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6271207B2 (en) * | 2013-10-08 | 2018-01-31 | 株式会社技研製作所 | Steel pipe reinforcing method and reinforcing device |
| JP6932544B2 (en) * | 2017-05-12 | 2021-09-08 | 株式会社技研製作所 | Construction method of support pile |
| JP7116516B1 (en) * | 2022-02-08 | 2022-08-10 | 株式会社スペース二十四インフォメーション | Strut fixing method |
-
1995
- 1995-05-01 JP JP10758495A patent/JP2641137B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08302686A (en) | 1996-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4695203A (en) | Method and apparatus for shoring and supporting a building foundation | |
| EP2264246A3 (en) | Method and apparatus for constructing a pile foundation | |
| JP2641137B2 (en) | Pressing device for cylindrical structure and method of driving cylindrical structure | |
| JP2794622B2 (en) | In particular, a method and an apparatus for placing a pipe for forming a foundation pile | |
| EP0913587A3 (en) | Force intensifying device | |
| WO1988008066A1 (en) | Anchoring device | |
| JPH10168879A (en) | Pulling method for steel sheet pile | |
| JP2007154484A (en) | Pile press-fitting attachment and pile press-fitting method | |
| JP5033405B2 (en) | Excavation apparatus and excavation method | |
| US4701077A (en) | Apparatus for withdrawing a tube or pile which has been driven into the soil | |
| JP4568438B2 (en) | Inner tank of cylindrical pile, press-fitting method of cylindrical pile, and construction method of cylindrical pile. | |
| CA2419878A1 (en) | Mechanical device for flaring a piling member | |
| JP2006161477A (en) | Blocking-member attachment and press-in method of the blocking member | |
| CN217629891U (en) | Device for preventing pile driver from laterally moving | |
| JP3569447B2 (en) | Pile press-in device and pile press-in method | |
| CN107466330A (en) | Stake drive component and follower | |
| JPH0610350A (en) | Device for extracting steel pipe pile | |
| JP2001262571A (en) | Penetration method for rotary pile | |
| JPH04134544U (en) | Chuck device for steel pipe pile press-in/extraction machine | |
| JP2002070007A (en) | Tubing device | |
| CN217551700U (en) | Equipment for removing tractor bearing | |
| JP2002088755A (en) | Tubing device | |
| JP2679571B2 (en) | Vertical shield method | |
| JP2916107B2 (en) | Pulling device for casing buried underground | |
| JP4412168B2 (en) | Steel pipe pile construction method and buckling prevention jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120502 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120502 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150502 Year of fee payment: 18 |
|
| EXPY | Cancellation because of completion of term |