JP2002161690A - Auger device and pile jacking making use thereof - Google Patents
Auger device and pile jacking making use thereofInfo
- Publication number
- JP2002161690A JP2002161690A JP2000358123A JP2000358123A JP2002161690A JP 2002161690 A JP2002161690 A JP 2002161690A JP 2000358123 A JP2000358123 A JP 2000358123A JP 2000358123 A JP2000358123 A JP 2000358123A JP 2002161690 A JP2002161690 A JP 2002161690A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- casing
- press
- tip
- steel sheet
- 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.)
- Granted
Links
Landscapes
- Earth Drilling (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、地盤に杭を埋設す
る際に、この杭に沿って地盤を掘削するオーガ装置、お
よび該オーガ装置を用いた杭圧入方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auger device for excavating a ground along a pile when the pile is buried in the ground, and to a pile press-fitting method using the auger device.
【０００２】[0002]
【従来の技術】従来、既設の杭から反力を取って杭（矢
板を含む）の圧入及び杭の引き抜きを行う杭圧入引抜機
が知られていた。また、この杭圧入引抜機には、例え
ば、特開平１０−１９５８７２号公報に示されるよう
に、固い地層にも杭を圧入できるようにするために、ケ
ーシングを備えたオーガ装置で掘削しながら杭を圧入し
ていく杭圧入引抜機も知られている。2. Description of the Related Art Conventionally, there has been known a pile press-in / pull-out machine which presses a pile (including a sheet pile) and pulls out a pile by taking a reaction force from an existing pile. In addition, as described in Japanese Patent Application Laid-Open No. 10-195873, for example, this pile press-in / pull-out machine is constructed such that piles are excavated with an auger device having a casing so that the piles can be pressed into a hard stratum. There is also known a pile press-in / draw-out machine for press-fitting.
【０００３】従来のオーガ装置１００は、例えば、図６
に示すように、円筒状（パイプ状）のケーシング１１０
の内部にオーガスクリュ−（図示しない）を備える。ま
た、ケーシング１１０は、杭圧入引抜機により挟持され
るレール部１２０（被挟持部）を備える。杭圧入引抜機
は、矢板２００とケーシング１１０とが並列するように
オーガ装置１００を挟持し、既設の杭から反力を取った
状態で、地盤に掘削孔を形成する。A conventional auger device 100 is, for example, shown in FIG.
As shown in the figure, a cylindrical (pipe-shaped) casing 110
Is provided with an August screw (not shown). Further, the casing 110 includes a rail portion 120 (a pinched portion) pinched by the pile press-in / pull-out machine. The pile press-in / pull-out machine clamps the auger device 100 so that the sheet pile 200 and the casing 110 are arranged in parallel, and forms a drilling hole in the ground while taking a reaction force from the existing pile.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、矢板２
００の先端部２００ａで掘削孔の孔壁を崩壊させながら
矢板２００を圧入していくときに、先端部２００ａが変
形する場合があった（変形した状態を二点鎖線で図
示）。また、掘削を繰り返していくうちに、ケーシング
１１０の先端部１１０ａ、レール部１２０の先端部１２
０ａ、ケーシング１１０の内面１１０ｂについても摩耗
して変形する場合があった。本発明の課題は、杭の変形
やケーシングの摩耗を低減しながら杭を圧入できるオー
ガ装置、および該オーガ装置を用いた杭圧入方法を提供
することである。However, sheet pile 2
When the sheet pile 200 was press-fitted while collapsing the hole wall of the excavation hole at the tip portion 200a of No. 00, the tip portion 200a was sometimes deformed (the deformed state is shown by a two-dot chain line). In addition, as the excavation is repeated, the tip 110 a of the casing 110 and the tip 12
0a, the inner surface 110b of the casing 110 was sometimes worn and deformed. An object of the present invention is to provide an auger device capable of press-fitting a pile while reducing deformation of the pile and wear of a casing, and a method of press-fitting a pile using the auger device.
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決するた
め、請求項１記載の発明は、例えば、図１〜５に示すよ
うに、ケーシング１０と、このケーシング内に配置され
るオーガスクリュ−３０と、を備え、杭（例えば、鋼矢
板４０）を埋設する際に、この杭に沿って地盤を掘削す
るオーガ装置１であって、前記ケーシングに、地盤に圧
入される杭の少なくとも先端部分４０ａもしくは先端部
近傍に沿うように突出して前記杭に近接もしくは当接
し、埋設される前記杭を補強する杭補強部２０を備える
ことを特徴とする。In order to solve the above-mentioned problems, the invention according to claim 1 comprises, for example, as shown in FIGS. 1 to 5, a casing 10 and an August screw disposed in the casing. An auger device 1 for excavating the ground along a pile (for example, a steel sheet pile 40) when embedding a pile (for example, a steel sheet pile 40), wherein at least a tip portion of the pile pressed into the ground in the casing. The pile is provided with a pile reinforcing portion 20 that protrudes along the vicinity of 40a or the vicinity of the tip and approaches or comes into contact with the pile to reinforce the pile to be buried.
【０００６】請求項１記載の発明によれば、地盤に圧入
される杭の少なくとも先端部もしくは先端部近傍に、ケ
ーシングに備えられる杭補強部が近接もしくは当接す
る。これにより、地盤に埋設される杭と杭補強部とが一
体的な構成となり、杭補強部により杭が補強された状態
で地盤に圧入される。また、杭を圧入する際に杭補強部
が掘削孔の孔壁を崩壊させることで、礫や石により杭に
加わる圧入先端抵抗が低減される。このために、地盤に
杭を圧入する過程で、礫や石による圧入先端抵抗のため
に杭が変形することを防止しながら圧入できる。According to the first aspect of the present invention, the pile reinforcing portion provided in the casing approaches or comes into contact with at least the tip portion or near the tip portion of the pile pressed into the ground. Thus, the pile buried in the ground and the pile reinforcement are integrated, and the pile is reinforced by the pile reinforcement and pressed into the ground. In addition, when the pile is pressed in, the pile reinforcement collapses the hole wall of the excavation hole, so that the press-fitting tip resistance applied to the pile due to gravel or stone is reduced. For this reason, in the process of press-fitting the pile into the ground, the pile can be press-fitted while preventing the pile from being deformed due to the resistance of the press-fitting tip due to gravel or stone.
【０００７】請求項２記載の発明は、請求項１記載のオ
ーガ装置において、例えば、図３〜５に示すように、前
記杭補強部もしくは前記ケーシングの先端部（例えば、
先端面１０ａ）の少なくとも一方に、地盤を崩壊させる
第１刃部（例えば、ビット１１、ビット１３）を備える
ことを特徴とする。According to a second aspect of the present invention, in the auger device according to the first aspect, for example, as shown in FIGS.
At least one of the tip surfaces 10a) is provided with a first blade portion (for example, a bit 11 and a bit 13) for collapsing the ground.
【０００８】請求項２記載の発明によれば、請求項１と
同様の効果を奏することができるとともに、杭補強部も
しくはケーシングの先端部の先方の地盤を、第１刃部に
より崩壊させながら杭が圧入される。これにより、杭を
圧入する際に、杭やケーシングがうける礫や石による圧
入先端抵抗をさらに低減できる。従って、杭だけでは弱
く変形が起きやすかったことや、ケーシングの摩耗を防
止しながら杭を圧入できる。According to the second aspect of the present invention, the same effects as those of the first aspect can be obtained, and the pile at the tip of the pile reinforcing portion or the tip of the casing is collapsed by the first blade portion. Is press-fitted. Thereby, when press-fitting a pile, the press-fitting tip resistance due to gravels or stones received by the pile or casing can be further reduced. Therefore, it is possible to press-fit the pile while preventing deformation due to the pile alone and preventing abrasion of the casing.
【０００９】請求項３記載の発明は、請求項１または２
に記載のオーガ装置を用いた杭圧入方法であって、前記
ケーシングが備える杭補強部を、地盤に圧入される杭の
少なくとも先端部もしくは先端部近傍に沿わせた状態
で、杭を圧入することを特徴とする。The invention described in claim 3 is the first or second invention.
Pile press-fitting method using the auger device according to the above, wherein the pile reinforcement portion provided in the casing, at least along the tip or near the tip of the pile to be pressed into the ground, press-fit the pile It is characterized by.
【００１０】請求項３記載の発明によれば、請求項１ま
たは２と同様の効果を奏することができるとともに、杭
を圧入する際の礫や石による圧入先端抵抗が低減され、
杭だけでは弱く変形が起きやすかったことや、ケーシン
グの摩耗を防止しながら杭を圧入できる。According to the third aspect of the present invention, the same effects as those of the first or second aspect can be obtained, and at the time of press-fitting the pile, the press-fitting tip resistance due to gravel or stone is reduced,
The piles can be pressed in while preventing deformation due to weak piles and preventing wear of the casing.
【００１１】請求項４記載の発明は、既設の杭から反力
を取って地盤の杭圧入位置に杭を圧入する杭圧入引抜機
に挟持される被挟持部を有するケーシングと、このケー
シング内に配置されるオーガスクリュ−と、を備え、杭
を埋設する際に、この杭に沿って地盤を掘削するオーガ
装置であって、前記被挟持部の先端部に、地盤を崩壊さ
せる第２刃部および耐摩耗部材の少なくとも一方を備え
ることを特徴とする。According to a fourth aspect of the present invention, there is provided a casing having a pinched portion to be clamped by a pile press-in / pull-out machine which presses a pile into a pile press-fitting position of the ground by taking a reaction force from an existing pile, and the casing includes An auger screw that is disposed, and when excavating the pile, digging the ground along the pile, wherein a second blade portion for breaking the ground is provided at the tip of the pinched portion. And at least one of a wear-resistant member.
【００１２】請求項４記載の発明によれば、被挟持部の
先端部に第２刃部および耐摩耗部材の少なくとも一方を
備えるので、圧入の際の礫や石による圧入先端抵抗が低
減され、被挟持部の先端部の摩耗を防止できる。According to the fourth aspect of the present invention, since at least one of the second blade portion and the wear-resistant member is provided at the distal end of the portion to be clamped, the resistance of the press-fitting tip due to gravel or stone at the time of press-fitting is reduced, Wear of the tip of the pinched portion can be prevented.
【００１３】[0013]
【発明の実施の形態】〔第１の実施の形態〕以下、図１
〜５を参照して、第１の実施の形態のオーガ装置１を詳
細に説明する。本実施の形態のオーガ装置１は、杭圧入
引抜機（図示しない）により鋼矢板４０（杭）を地盤に
圧入するときに用いられる。図１〜３に示すように、オ
ーガ装置１は、円筒状のケーシング１０と、このケーシ
ング１０内に配置されるオーガスクリュ−３０（図４に
図示）と、このオーガスクリュ−３０を垂直な中心軸Ｑ
まわりに回転させる駆動モータ（図示しない）と、など
を主体に構成される。ケーシング１０が地盤に向うリン
グ状の先端面１０ａには、鋼矢板４０のウェブに沿う側
面形状をもつ杭補強部２０が、ケーシング１０の先端面
１０ａから突出して設けられる。図１（ａ）の上面図お
よび図１（ｂ）の側面図に、ケーシング１０に設けられ
る杭補強部２０を模式的に図示する。なお、図２（ａ）
に示すように、杭補強部２０をケーシング１０と一体的
に構成しても良いし、図２（ｂ）に示すように、別体に
構成された杭補強部２０を溶接などによりケーシング１
０の先端面１０ａに固定しても良い。杭圧入引抜機が、
鋼矢板４０とケーシング１０とをこれらが互いに並列す
るように挟持すると、杭補強部２０の鋼矢板４０に向う
側面が鋼矢板４０のウェブに沿って近接もしくは当接す
る配置となる。図２に杭補強部２０が鋼矢板４０のウェ
ブに沿う様子を模式的に図示する。この状態で、鋼矢板
４０を地盤に圧入することにより、礫や石による圧入先
端抵抗が低減され、鋼矢板４０だけでは弱く変形が起き
やすかったことや、ケーシング１０の摩耗を防止でき
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG.
The auger device 1 according to the first embodiment will be described in detail with reference to FIGS. The auger device 1 of the present embodiment is used when a steel sheet pile 40 (pile) is pressed into the ground by a pile press-in / draw-out machine (not shown). As shown in FIGS. 1 to 3, the auger device 1 includes a cylindrical casing 10, an auger screw 30 (shown in FIG. 4) disposed in the casing 10, and Axis Q
It mainly comprises a drive motor (not shown) for rotating around and the like. A pile reinforcing portion 20 having a side surface shape along the web of the steel sheet pile 40 is provided on a ring-shaped tip surface 10a of the casing 10 facing the ground, protruding from the tip surface 10a of the casing 10. The pile reinforcement 20 provided in the casing 10 is schematically illustrated in the top view of FIG. 1A and the side view of FIG. In addition, FIG.
As shown in FIG. 2, the pile reinforcing portion 20 may be formed integrally with the casing 10, or as shown in FIG. 2B, the pile reinforcing portion 20 formed separately may be formed by welding or the like to the casing 1.
0 may be fixed to the front end face 10a. Pile press-in and pull-out machine
When the steel sheet pile 40 and the casing 10 are sandwiched so as to be parallel to each other, the side face of the pile reinforcing portion 20 facing the steel sheet pile 40 is arranged so as to approach or contact along the web of the steel sheet pile 40. FIG. 2 schematically illustrates a state in which the pile reinforcing portion 20 follows the web of the steel sheet pile 40. By pressing the steel sheet pile 40 into the ground in this state, the pressure resistance of the press-fitting tip due to gravel or stone is reduced, and the steel sheet pile 40 alone can be weakly deformed easily and the casing 10 can be prevented from being worn.
【００１４】杭圧入引抜機は周知の装置であり、既設の
杭（例えば鋼矢板）から反力をとって地盤に対して新た
な杭を圧入すると共に、この圧入された杭上を移動でき
るように構成される。そして、杭上を移動すると共に新
たな杭を地盤に圧入していく。また、杭圧入引抜機は、
油圧シリンダにより上下動されるチャック部を備える。
このチャック部は、オーガ装置１のケーシング１０を挟
持するケーシングチャック部と、地盤に圧入する鋼矢板
４０を挟持する杭チャック部と、を備える。A pile press-in / pull-out machine is a well-known device that takes a reaction force from an existing pile (for example, a steel sheet pile) to press-fit a new pile into the ground, and allows the pile to move on the pressed-in pile. It is composed of Then, while moving on the pile, a new pile is pressed into the ground. In addition, the pile press-in and pull-out machine
It has a chuck portion that is moved up and down by a hydraulic cylinder.
The chuck portion includes a casing chuck portion for holding the casing 10 of the auger device 1 and a pile chuck portion for holding the steel sheet pile 40 pressed into the ground.
【００１５】ケーシング１０は、図３に示すように、杭
圧入引抜機がケーシング１０を挟持するレール部１２
（被挟持部）を備える。このレール部１２の先端面１２
ｃにはビット１２ａが設けられる。また、ケーシング１
０は、掘削された土砂を排出する排土口（図示しない）
を備える。オーガスクリュ−３０は、図２に示すよう
に、軸３１のまわりにオーガ羽根３２を一体的に備えて
構成される。なお、図２ではオーガスクリュ−３０の構
成を模式的に図示している。As shown in FIG. 3, the casing 10 has a rail 12
(Clamped portion). Tip surface 12 of this rail portion 12
Bit 12a is provided in c. Also, the casing 1
0 is a discharging port for discharging excavated earth and sand (not shown)
Is provided. As shown in FIG. 2, the auger screw 30 is integrally provided with an auger blade 32 around a shaft 31. FIG. 2 schematically illustrates the configuration of the August screw 30.
【００１６】杭補強部２０は、図３に示すように、中央
部２１と、２つの側部２２、２３と、を備える。また、
杭補強部２０は、ケーシング１０の先端面１０ａで中央
部２１と２つの側部２２、２３とが離間する部分に、ビ
ット１１（第１刃部）を備える。ビット１１は中央部２
１の左右に１つづつ設けられる。このビット１１は、鋼
矢板４０を圧入するときに先方の孔壁Ｍを崩壊させるこ
とに寄与する。また、中央部２１と２つの側部２２、２
３とは、これらの鋼矢板４０に向う側面２１ａ、２２
ａ、２３ａが、鋼矢板４０の先端部分４０ａ近傍のウェ
ブに沿う形状に設けられている。そして、中央部２１の
先端面２１ｂと、２つの側部２２、２３の先端面２２
ｂ、２３ｂとは、これら先端面２１ｂ、２２ｂ、２３ｂ
がほぼ水平で同じ高さとなるように構成され、この高さ
からビット１１の先端部１１ａが突出するように設けら
れる。なお、本実施の形態では、鋼矢板４０の先端が杭
補強部２０からやや突出するように構成しているが、鋼
矢板４０に向う側面２１ａ、２２ａ、２３ａが少なくと
も鋼矢板４０の先端部分４０ａ近傍のウェブに沿うよう
に構成されれば、杭補強部２０の鋼矢板４０に対する高
さは任意に設定できる。すなわち、杭補強部２０の先端
面２１ｂ、２２ｂ、２３ｂと鋼矢板４０の先端面４０ｂ
とがほぼ面一となるように構成しても良いし、杭補強部
２０の先端面２１ｂ、２２ｂ、２３ｂが鋼矢板４０の先
端面４０ｂから突出するように構成しても良い。As shown in FIG. 3, the pile reinforcing portion 20 has a central portion 21 and two side portions 22 and 23. Also,
The pile reinforcing portion 20 includes a bit 11 (first blade portion) at a portion where the central portion 21 and the two side portions 22 and 23 are separated from each other on the distal end surface 10a of the casing 10. Bit 11 is center 2
One is provided on each of the left and right sides. The bit 11 contributes to collapsing the hole wall M at the time of press-fitting the steel sheet pile 40. Also, a central part 21 and two side parts 22, 2
3 are the side surfaces 21a, 22 facing these steel sheet piles 40.
a, 23a are provided in a shape along the web near the tip portion 40a of the steel sheet pile 40. Then, the distal end surface 21b of the central portion 21 and the distal end surfaces 22 of the two side portions 22 and 23
b, 23b are these tip surfaces 21b, 22b, 23b
Are substantially horizontal and at the same height, and the tip 11a of the bit 11 is provided so as to protrude from this height. In the present embodiment, the tip of the steel sheet pile 40 is configured to protrude slightly from the pile reinforcing portion 20, but the side faces 21 a, 22 a, and 23 a facing the steel sheet pile 40 have at least the tip portion 40 a of the steel sheet pile 40. The height of the pile reinforcing portion 20 with respect to the steel sheet pile 40 can be set arbitrarily as long as it is configured along the nearby web. That is, the distal end surfaces 21b, 22b, 23b of the pile reinforcing portion 20 and the distal end surface 40b of the steel sheet pile 40
May be substantially flush with each other, or the tip surfaces 21b, 22b, 23b of the pile reinforcing portion 20 may project from the tip surface 40b of the steel sheet pile 40.
【００１７】また、ビット１１、１２ａは、図３（ｂ）
に示すように、オーガスクリュ−１０の中心軸Ｑから角
度θをなして外側を向くように配設される。これによ
り、ビット１１、１２ａの先端部１１ａ、１２ｄが、ケ
ーシング１０のリング状の断面から外側にやや突出する
ように配設される。従って、鋼矢板４０の圧入に際し
て、先方の掘削孔Ｒの孔壁Ｍを崩壊させることに寄与す
る。The bits 11 and 12a are as shown in FIG.
As shown in the figure, the oil screw 10 is disposed so as to face outward at an angle θ from the central axis Q of the August screw 10. As a result, the tips 11a, 12d of the bits 11, 12a are arranged so as to slightly protrude outward from the ring-shaped cross section of the casing 10. Therefore, when press-fitting the steel sheet pile 40, it contributes to collapsing the hole wall M of the excavation hole R on the front side.
【００１８】また、ケーシング１０の杭補強部２０が設
けられていない露出した先端面１０ａに、多数の小型の
ビット１３（第１刃部）が設けられる。また、中央部２
１および２つの側部２２、２３には、これらの先端面２
１ｂ、２２ｂ、２３ｂに、同様の多数の小型のビット１
３が設けられる。さらに、図３（ｂ）に示すように、２
つの側部２２、２３がケーシング１０の先端面１０ａか
ら起立する側面２２ｃ、２３ｃに、同様の小型のビット
１３が設けられる。A large number of small bits 13 (first blades) are provided on the exposed front end face 10a of the casing 10 where the pile reinforcing portions 20 are not provided. Also, the central part 2
One and two sides 22, 23 have these tip surfaces 2
1b, 22b and 23b have a number of similar small bits 1
3 are provided. Further, as shown in FIG.
A similar small bit 13 is provided on side surfaces 22c and 23c where the two side portions 22 and 23 rise from the front end surface 10a of the casing 10.
【００１９】なお、図３（ａ）に示すように、中央部２
１が鋼矢板４０のウェブと直交する方向の厚さａと、２
つの側部２２、２３が鋼矢板４０のウェブと直交する方
向の厚さｂとは、鋼矢板４０を地盤に圧入する際に、掘
削孔Ｒの孔壁Ｍから受ける負荷を低減する機能を損なわ
ない範囲で、薄く設けることが好ましい。これにより、
鋼矢板４０を地盤に圧入する際に、杭補強部２０の先端
部分が孔壁Ｍを崩壊させるときに受ける圧入先端抵抗が
より軽減される。また、本実施の形態では、杭補強部２
０の先端面２１ｂ、２２ｂ、２３ｂがほぼ水平となるよ
うに構成しているが、杭補強部２０の先端面２１ｂ、２
２ｂ、２３ｂを、杭補強部２０の先端からケーシング１
０の内側に向かって傾斜するテーパ形状に構成しても良
い。この場合には、杭補強部２０の先端部分が孔壁Ｍを
崩壊させるときに受ける圧入先端抵抗がさらに軽減され
る。Note that, as shown in FIG.
1 is the thickness a of the steel sheet pile 40 in the direction perpendicular to the web;
The thickness b of the two side portions 22 and 23 in the direction orthogonal to the web of the steel sheet pile 40 impairs the function of reducing the load received from the hole wall M of the excavation hole R when the steel sheet pile 40 is pressed into the ground. It is preferable to provide the film as thin as possible. This allows
When the steel sheet pile 40 is press-fitted into the ground, the press-fitting tip resistance received when the tip portion of the pile reinforcing portion 20 collapses the hole wall M is further reduced. In the present embodiment, the pile reinforcement 2
0, the tip surfaces 21b, 22b, and 23b are substantially horizontal.
2b, 23b from the tip of the pile reinforcing portion 20 to the casing 1
It may be configured in a tapered shape inclined toward the inside of 0. In this case, the press-fitting tip resistance received when the tip portion of the pile reinforcing portion 20 collapses the hole wall M is further reduced.
【００２０】次に、本発明の実施の形態のオーガ装置１
を用いた杭圧入方法を説明する。先ず、既設の杭から反
力を取った状態の杭圧入引抜機が、チャック部（図示し
ない）に、本実施の形態のオーガ装置１を挟持すると共
に、地盤に圧入する鋼矢板４０を挟持する。このとき、
図３および図４に示すように、鋼矢板４０の先端面４０
ｂからビット１１の先端部１１ａがやや突出するように
挟持する。ここで、上述のように杭補強部２０が、鋼矢
板４０の先端部分４０ａに沿って近接もしくは当接する
ように配設される（図２参照）。Next, an auger device 1 according to an embodiment of the present invention.
A method of press-fitting piles using the method will be described. First, a pile press-in / pull-out machine in a state of taking a reaction force from an existing pile holds the auger device 1 of the present embodiment in a chuck portion (not shown) and also holds the steel sheet pile 40 to be pressed into the ground. . At this time,
As shown in FIG. 3 and FIG.
The bit 11 is pinched so that the tip 11a of the bit 11 slightly protrudes from b. Here, as described above, the pile reinforcing portion 20 is disposed so as to approach or abut along the tip portion 40a of the steel sheet pile 40 (see FIG. 2).
【００２１】この状態で、ケーシング１０内でオーガス
クリュ−３０を回転させると共に、杭圧入引抜機のチャ
ック部を油圧シリンダにより上下動させ、オーガ装置１
および鋼矢板４０を地盤に対して下降させながら、掘削
孔Ｒを形成していく。In this state, the auger screw 30 is rotated in the casing 10 and the chuck portion of the pile press-in / pull-out machine is moved up and down by a hydraulic cylinder.
The excavation hole R is formed while the steel sheet pile 40 is lowered with respect to the ground.
【００２２】この時、掘削孔Ｒを形成していく過程で、
図４に示すように、地盤に圧入される鋼矢板４０の先端
部分４０ａには、崩壊させる先方の孔壁Ｍから大きな力
が作用する。しかし、鋼矢板４０の先端部分４０ａに、
杭補強部２０が近接もしくは当接しているので、鋼矢板
４０が礫や石により受ける圧入先端抵抗が低減され、鋼
矢板４０だけでは弱いために起きる変形を抑制できる。
併せて、オーガスクリュ−３０を回転させながら下降さ
せて掘削孔Ｒを形成していく過程で、ビット１１、１２
ａが、掘削される先方の孔壁Ｍを速やかに崩壊させるこ
とに寄与する。これにより、鋼矢板４０の圧入に際し
て、礫や石による圧入先端抵抗をさらに低減でき、鋼矢
板４０だけでは弱いために起きる変形やケーシング１０
の摩耗をさらに防止できる。加えて、崩壊させる先方の
孔壁Ｍに向うケーシング１０の部分には、多数の小型の
ビット１３が設けられている。これにより、ビット１３
が設けられる部分の摩耗をさらに低減できる。さらに、
掘削孔Ｒを形成する過程で、掘削孔Ｒの途中にある石Ｐ
は、これら小型のビット１３やビット１１、１２ａと、
オーガスクリュ−３０と、の間に挟まれる。このように
石Ｐが挟まれた状態から、オーガスクリュ−３０がさら
に中心軸Ｑまわりに回転することで、石Ｐに剪断力を加
えて砕くことができる。従って、鋼矢板４０の圧入に際
して、礫や石による圧入先端抵抗がさらに低減され、鋼
矢板４０だけでは弱いために起きる変形や、ケーシング
１０の摩耗をさらに防止できる。At this time, in the process of forming the drill hole R,
As shown in FIG. 4, a large force acts on the tip portion 40a of the steel sheet pile 40 that is pressed into the ground from the hole wall M on the other side of the collapse. However, at the tip portion 40a of the steel sheet pile 40,
Since the pile reinforcement portion 20 is close to or in contact with the pile, the press-fitting tip resistance that the steel sheet pile 40 receives with gravel or stone is reduced, and the deformation that occurs because the steel sheet pile 40 alone is weak can be suppressed.
At the same time, in the process of forming the drill hole R by lowering the August screw 30 while rotating it, the bits 11 and 12 are formed.
a contributes to quickly collapsing the hole wall M on the other side to be excavated. Thereby, when press-fitting the steel sheet pile 40, the press-fitting tip resistance due to gravel or stone can be further reduced, and the deformation or casing 10 caused by the weakness of the steel sheet pile 40 alone is not sufficient.
Wear can be further prevented. In addition, a large number of small bits 13 are provided in a portion of the casing 10 facing the hole wall M on the other side to be collapsed. This gives bit 13
Can further reduce the wear of the portion where is provided. further,
In the process of forming the drill hole R, the stone P in the middle of the hole R
Are these small bits 13 and bits 11, 12a,
Between the August Cru-30. By rotating the August screw 30 further around the central axis Q from the state in which the stone P is sandwiched in this way, the stone P can be crushed by applying a shearing force. Therefore, when press-fitting the steel sheet pile 40, the press-fitting tip resistance due to gravel or stone is further reduced, and deformation caused by weakness of the steel sheet pile 40 alone and abrasion of the casing 10 can be further prevented.
【００２３】そして、礫や石による圧入先端抵抗が上述
の通りに低減されることで、地盤に圧入される鋼矢板４
０だけでは弱いために起きる変形が抑制されると共に、
ケーシング１０の地盤に向う部分や、ケーシング１０の
内面など、掘削孔Ｒを形成する際に、ケーシング１０が
礫や石による圧入先端抵抗を受ける部分の摩耗や変形が
低減される。以上の通りにして、本実施の形態のオーガ
装置１を用いて地盤に鋼矢板４０が圧入される。[0023] Then, since the tip resistance due to the rubble or stone is reduced as described above, the steel sheet pile 4 pressed into the ground is reduced.
Deformation that occurs because only 0 is weak is suppressed,
When the excavation hole R is formed, such as the portion of the casing 10 facing the ground or the inner surface of the casing 10, wear and deformation of the portion where the casing 10 receives the press-fitting tip resistance due to gravel or stone is reduced. As described above, the steel sheet pile 40 is pressed into the ground using the auger device 1 of the present embodiment.
【００２４】なお、図５に示すように、レール部１２が
地盤に向う先端面１２ｃにビット１２ａを設ける代わり
に、周知の耐摩耗部材からなる耐摩耗部１２ｂを設けて
も良い。この場合には、上述の杭圧入方法と基本的に同
様にして、崩壊させる先方の孔壁Ｍに向うレール部１２
の摩耗が低減される。また、レール部１２に周知の耐摩
耗部材からなる耐摩耗部１２ｂとビット１２ａとの両方
を設けても良い。As shown in FIG. 5, instead of providing the bit 12a on the tip surface 12c of the rail portion 12 facing the ground, a wear-resistant portion 12b made of a well-known wear-resistant member may be provided. In this case, the rail portion 12 facing the hole wall M on the other side to be collapsed is basically similar to the pile press-fitting method described above.
Is reduced. Further, the rail portion 12 may be provided with both a wear-resistant portion 12b made of a well-known wear-resistant member and a bit 12a.
【００２５】以上の第１の実施の形態のオーガ装置１に
よれば、鋼矢板４０を地盤に圧入する過程で、崩壊させ
る先方の礫や石による圧入先端抵抗により、鋼矢板４０
だけでは弱いために起きる変形が防止される。また、孔
壁Ｍを崩壊させるビット１１、１２ａなどを備えるの
で、鋼矢板４０が受ける礫や石による圧入先端抵抗がさ
らに低減されると共に、鋼矢板４０だけでは弱いために
起きる変形やケーシングの摩耗を防止しながら鋼矢板４
０が圧入される。According to the auger apparatus 1 of the first embodiment described above, in the process of pressing the steel sheet pile 40 into the ground, the force of the press-fitting tip due to the rubble or stone to be collapsed causes the steel sheet pile 40 to move.
This alone prevents the deformation that occurs due to weakness. Further, the provision of the bits 11 and 12a for collapsing the hole wall M further reduces the press-fitting tip resistance of the steel sheet pile 40 due to gravel and stones, and also causes deformation and wear of the casing due to the weakness of the steel sheet pile 40 alone. To prevent steel sheet pile 4
0 is press-fitted.
【００２６】〔第２の実施の形態〕第２の実施の形態の
オーガ装置は、ケーシング１０に杭補強部２０を備えて
いないところを除いては、第１の実施の形態のオーガ装
置１と同様であり、同様の構成要素については同一の符
号を付してその説明を省略する。そして、レール部１２
が地盤に向う先端面１２ｃにビット１２ａ（第２刃部）
もしくは耐摩耗部１２ｂが設けられている。また、先端
面１２ｃにビット１２ａと耐摩耗部１２ｂとの両方を設
けても良い。第２の実施の形態のオーガ装置によれば、
第１の実施の形態のオーガ装置１と基本的に同様にし
て、崩壊させる先方の孔壁Ｍに向うレール部１２の摩耗
を低減しながら杭を圧入できる。[Second Embodiment] The auger device according to the second embodiment differs from the auger device 1 according to the first embodiment except that the casing 10 is not provided with the pile reinforcing portion 20. It is the same, and the same components are denoted by the same reference numerals and description thereof will be omitted. And the rail part 12
Is a bit 12a (second blade portion) on the tip surface 12c facing the ground.
Alternatively, a wear-resistant portion 12b is provided. Further, both the bit 12a and the wear-resistant portion 12b may be provided on the tip end surface 12c. According to the auger device of the second embodiment,
Basically, in the same manner as the auger device 1 of the first embodiment, the pile can be press-fitted while reducing abrasion of the rail portion 12 toward the hole wall M on the other side to be collapsed.
【００２７】なお、本発明は上記実施の形態に限定され
るものではない。例えば、本実施の形態においては、鋼
矢板４０を圧入する場合を主体に説明したが、本発明の
オーガ装置１はこれに限定されるものではなく、他の鋼
管矢板、Ｈ型矢板、Ｚ型矢板、直線型矢板、コンクリー
ト矢板等や他の矢板以外の杭にも応用できることは勿論
である。また、本実施の形態では、杭圧入引抜機がケー
シング１０を挟持する被挟持部を設ける構成としたが、
この被挟持部を備えていないケーシング１０にも適用で
きることは勿論である。この場合には、杭圧入引抜機は
ケーシング１０本体を挟持することで上述と同様にして
杭を圧入できる。さらに、本実施の形態では、杭圧入引
抜機を用いて鋼矢板４０を圧入する場合を例示したが、
杭圧入引抜機を用いずに杭を圧入する場合にも適用でき
ることは勿論である。また、ビット１１、ビット１２
ａ、ビット１３については、必要に応じてその一部もし
くは全部を設けない構成（ケーシング１０に杭補強部２
０だけを設ける構成を含む）としても良い。この場合に
はより簡易な構成とすることができる。その他、本発明
の趣旨を逸脱しない範囲において、適宜に変更可能であ
ることは勿論である。The present invention is not limited to the above embodiment. For example, in the present embodiment, the case where the steel sheet pile 40 is press-fitted has been mainly described, but the auger device 1 of the present invention is not limited to this, and other steel pipe sheet piles, H-type sheet piles, and Z-type sheet piles. Needless to say, the present invention can be applied to piles other than sheet piles, straight sheet piles, concrete sheet piles, and other sheet piles. Further, in the present embodiment, the pile press-in / pull-out machine has a configuration in which the clamped portion that clamps the casing 10 is provided.
Needless to say, the present invention can be applied to the casing 10 which does not include the clamped portion. In this case, the pile press-in / pull-out machine can press-fit the pile in the same manner as described above by sandwiching the casing 10 body. Further, in the present embodiment, the case where the steel sheet pile 40 is press-fitted by using the pile press-in / pull-out machine is exemplified,
Needless to say, the present invention can also be applied to the case where a pile is pressed without using a pile press-in / draw-out machine. Bit 11, bit 12
a, a configuration in which a part or all of the bit 13 is not provided as necessary (the pile reinforcing portion 2
(Including a configuration in which only 0 is provided). In this case, a simpler configuration can be achieved. In addition, as a matter of course, it can be appropriately changed without departing from the spirit of the present invention.
【００２８】[0028]
【発明の効果】請求項１記載の発明によれば、地盤に杭
を圧入する過程で、礫や石による圧入先端抵抗により、
杭だけでは弱いために起きる変形を低減しながら圧入で
きる。According to the first aspect of the present invention, in the process of press-fitting a pile into the ground, the pressure due to the press-fitting tip resistance due to gravel or stone causes
The pile alone can be pressed in while reducing the deformation that occurs because it is weak.
【００２９】請求項２記載の発明によれば、請求項１と
同様の効果を奏することができるとともに、杭やケーシ
ングの先端部がうける礫や石による圧入先端抵抗をさら
に低減でき、杭だけでは弱いために起きる変形や、ケー
シングが摩耗することを防止しながら杭を圧入できる。According to the second aspect of the present invention, the same effects as those of the first aspect can be obtained, and the press-fitting tip resistance due to the gravel or stone received at the tip of the pile or casing can be further reduced. The pile can be pressed in while preventing deformation caused by weakness and abrasion of the casing.
【００３０】請求項３記載の発明によれば、請求項１ま
たは２と同様の効果を奏することができるとともに、杭
を圧入する際にうける礫や石による圧入先端抵抗が低減
され、杭だけでは弱いために起きる変形や、ケーシング
の摩耗を防止しながら杭を圧入できる。According to the third aspect of the present invention, the same effects as those of the first or second aspect can be obtained, and at the time of press-fitting the pile, the resistance of the press-fitting tip caused by gravel or stone is reduced. The pile can be pressed in while preventing deformation caused by weakness and abrasion of the casing.
【００３１】請求項４記載の発明によれば、圧入の際に
うける礫や石による圧入先端抵抗が低減され、被挟持部
の先端部の摩耗を防止できる。According to the fourth aspect of the present invention, the resistance of the press-fitting tip caused by gravel or stones at the time of press-fitting is reduced, and wear of the tip end of the pinched portion can be prevented.
【図１】本発明を適用した一実施の形態のオーガ装置１
を模式的に示した図である。FIG. 1 is an auger apparatus 1 according to an embodiment of the present invention.
It is the figure which showed typically.
【図２】図１の杭補強部２０が鋼矢板４０に沿う様子を
示す図である。FIG. 2 is a view showing a state in which a pile reinforcing portion 20 of FIG.
【図３】図１のオーガ装置１の構成を示す図である。FIG. 3 is a diagram showing a configuration of the auger device 1 of FIG.
【図４】図３のオーガ装置１が掘削孔Ｒを形成する様子
を示す図である。FIG. 4 is a diagram showing a state in which the auger device 1 of FIG. 3 forms a drill hole R.
【図５】図３の変形例を示す図である。FIG. 5 is a diagram showing a modification of FIG. 3;
【図６】従来のオーガ装置１００の構成を示す図であ
る。FIG. 6 is a diagram showing a configuration of a conventional auger device 100.
１ オーガ装置 １０ ケーシング １１ ビット（第１刃部） １３ ビット（第１刃部） １２ レール部（被挟持部） １２ａ ビット（第２刃部） １２ｂ 耐摩耗部（耐摩耗部材） ２０ 杭補強部 ３０ オーガスクリュ− ４０ 鋼矢板（杭） DESCRIPTION OF SYMBOLS 1 Auger device 10 Casing 11 Bit (1st blade part) 13 Bit (1st blade part) 12 Rail part (clamped part) 12a Bit (2nd blade part) 12b Wear-resistant part (wear-resistant member) 20 Pile reinforcement part 30 August Crew 40 Steel sheet pile (pile)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 都築 良夫 高知県高知市布師田3948番地１ 株式会社 技研製作所内 Ｆターム(参考） 2D029 ED03 2D050 AA12 CA02 CB03 CB21 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshio Tsuzuki 3948-1, Fushida, Kochi City, Kochi Prefecture F-term in Giken Seisakusho Co., Ltd. (Reference) 2D029 ED03 2D050 AA12 CA02 CB03 CB21
Claims (4)
されるオーガスクリュ−と、を備え、杭を埋設する際
に、この杭に沿って地盤を掘削するオーガ装置であっ
て、 前記ケーシングに、地盤に圧入される杭の少なくとも先
端部もしくは先端部近傍に沿うように突出して前記杭に
近接もしくは当接し、埋設される前記杭を補強する杭補
強部を備えることを特徴とするオーガ装置。An auger device comprising: a casing; and an auger screw arranged in the casing, wherein the ground is excavated along the pile when the pile is buried. An auger device comprising: a pile reinforcing portion that protrudes along at least a tip portion or a vicinity of a tip portion of a pile to be press-fitted into the pile, approaches or contacts the pile, and reinforces the pile to be buried.
とも一方に、地盤を崩壊させる第１刃部を備えることを
特徴とするオーガ装置。2. The auger device according to claim 1, further comprising a first blade portion for collapsing the ground on at least one of the pile reinforcing portion and the tip of the casing.
用いた杭圧入方法であって、 前記ケーシングが備える杭補強部を、地盤に圧入される
杭の少なくとも先端部もしくは先端部近傍に沿わせた状
態で、杭を圧入することを特徴とする杭圧入方法。3. A pile press-fitting method using the auger device according to claim 1 or 2, wherein a pile reinforcing portion provided in the casing is provided along at least a tip end or a vicinity of the tip end of the pile to be pressed into the ground. A method for press-fitting a pile, wherein the pile is pressed in a state where the piles are aligned.
位置に杭を圧入する杭圧入引抜機に挟持される被挟持部
を有するケーシングと、このケーシング内に配置される
オーガスクリュ−と、を備え、杭を埋設する際に、この
杭に沿って地盤を掘削するオーガ装置であって、 前記被挟持部の先端部に、地盤を崩壊させる第２刃部お
よび耐摩耗部材の少なくとも一方を備えることを特徴と
するオーガ装置。4. A casing having a pinched portion to be pinched by a pile press-in / pull-out machine that presses a pile into a pile press-fitting position on the ground by taking a reaction force from an existing pile, and an auger screw arranged in the casing. An auger device that excavates the ground along the pile when the pile is buried, wherein at least one of a second blade portion and a wear-resistant member that collapses the ground is provided at a tip end of the pinched portion. An auger device comprising one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358123A JP4625574B2 (en) | 2000-11-24 | 2000-11-24 | Ogre device and pile press-in method using the auger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000358123A JP4625574B2 (en) | 2000-11-24 | 2000-11-24 | Ogre device and pile press-in method using the auger device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002161690A true JP2002161690A (en) | 2002-06-04 |
| JP4625574B2 JP4625574B2 (en) | 2011-02-02 |
Family
ID=18830077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000358123A Expired - Fee Related JP4625574B2 (en) | 2000-11-24 | 2000-11-24 | Ogre device and pile press-in method using the auger device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4625574B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247245A (en) * | 2006-03-15 | 2007-09-27 | Kowan Co Ltd | Pile pressing-in method and pile pressing-in and pulling-out machine |
| JP2012112454A (en) * | 2010-11-25 | 2012-06-14 | Kawasaki Heavy Ind Ltd | Planetary gear reduction device |
| JP5409942B1 (en) * | 2013-02-25 | 2014-02-05 | 株式会社オーク | Press fitting method of sheet pile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6272815A (en) * | 1985-09-25 | 1987-04-03 | Toshio Haino | Lower restrainer for steel sheet pile penetrator |
| JPH05321253A (en) * | 1992-05-22 | 1993-12-07 | Hitachi Constr Mach Co Ltd | Boring device |
| JPH10195872A (en) * | 1996-11-18 | 1998-07-28 | Giken Seisakusho Co Ltd | Pile press-in device and press-in method |
-
2000
- 2000-11-24 JP JP2000358123A patent/JP4625574B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6272815A (en) * | 1985-09-25 | 1987-04-03 | Toshio Haino | Lower restrainer for steel sheet pile penetrator |
| JPH05321253A (en) * | 1992-05-22 | 1993-12-07 | Hitachi Constr Mach Co Ltd | Boring device |
| JPH10195872A (en) * | 1996-11-18 | 1998-07-28 | Giken Seisakusho Co Ltd | Pile press-in device and press-in method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007247245A (en) * | 2006-03-15 | 2007-09-27 | Kowan Co Ltd | Pile pressing-in method and pile pressing-in and pulling-out machine |
| JP2012112454A (en) * | 2010-11-25 | 2012-06-14 | Kawasaki Heavy Ind Ltd | Planetary gear reduction device |
| JP5409942B1 (en) * | 2013-02-25 | 2014-02-05 | 株式会社オーク | Press fitting method of sheet pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4625574B2 (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102668516B1 (en) | Apparatus for cutting penetrated pile with drilling fuction and Oprating Method thereof | |
| JP2002161690A (en) | Auger device and pile jacking making use thereof | |
| JP2016121441A (en) | Reinforcing steel pipe and auxiliary method for excavation using the same | |
| JP2006083573A (en) | All casing method and its apparatus | |
| JP2001032666A (en) | Excavating bit for ground excavating device | |
| JPH04302693A (en) | Excavating engineering method | |
| JP2006009468A (en) | Driving method of inner excavation type steel pipe sheet pile and the steel pipe sheet pile used therefor | |
| JPH09302654A (en) | Construction method and device for driving steel pipe pile | |
| JP3123333B2 (en) | Drilling tools | |
| JP2938401B2 (en) | Hard wall cutter and shield machine | |
| JPH10306674A (en) | Excavation pit | |
| KR200230744Y1 (en) | A hammer magnifying bit for compressing casings | |
| JP2822691B2 (en) | Excavation method | |
| JP3339412B2 (en) | Drilling equipment and drilling method | |
| WO1995015419A1 (en) | Ground boring device and method for constructing an underground wall using the same | |
| JP2002194992A (en) | Pipe jacking method for pipe | |
| JP3036347B2 (en) | Drilling tool | |
| JP3191574B2 (en) | Drilling tools | |
| JPS6229597B2 (en) | ||
| JPH04302694A (en) | Excavating engineering method | |
| JPH11247573A (en) | Boring construction method and device of foundation ground | |
| JP2001295575A (en) | Device for drilling pilot hole | |
| JPS6124723A (en) | Method of forming pile hole | |
| JPH04309685A (en) | Well boring | |
| JPH0791181A (en) | Excavating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070910 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090803 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100727 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100924 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20101026 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20101108 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 4625574 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131112 Year of fee payment: 3 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |