JP2000001849A - Cast-in-place knot pile - Google Patents
Cast-in-place knot pileInfo
- Publication number
- JP2000001849A JP2000001849A JP10164566A JP16456698A JP2000001849A JP 2000001849 A JP2000001849 A JP 2000001849A JP 10164566 A JP10164566 A JP 10164566A JP 16456698 A JP16456698 A JP 16456698A JP 2000001849 A JP2000001849 A JP 2000001849A
- Authority
- JP
- Japan
- Prior art keywords
- cast
- thin
- pile
- knot
- place
- 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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、現場打ちコンク
リートによって成形した現場打ち節杭に関するもので、
建物などの構造物を支持する基礎杭として用いられる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast-in-place pile made of cast-in-place concrete.
Used as a foundation pile to support structures such as buildings.
【０００２】[0002]
【従来の技術】従来の節杭は工場生産による既成杭であ
り、鉄筋コンクリート製やプレストレストコンクリート
製のものが多い。2. Description of the Related Art Conventional knotted piles are prefabricated piles manufactured by a factory, and are often made of reinforced concrete or prestressed concrete.
【０００３】節杭は、一般に軸部と、長手方向に所定間
隔で設けた太径の節部とからなり、節部を設けたことで
周面摩擦抵抗が増大し、大きな支持力を発揮することが
できる。A knotted pile generally comprises a shaft portion and a large-diameter knot portion provided at a predetermined interval in a longitudinal direction. The provision of the knot portion increases peripheral frictional resistance and exerts a large supporting force. be able to.
【０００４】ところで、推進工法用の立坑の施工や深礎
杭工法においては、従来、掘削孔の壁面にライナープレ
ートとして、波形に加工した薄鋼板などからなるコルゲ
ート板を円筒状に継ぎ足して行き、その内側にコンクリ
ートなどによるライニングを施したものが知られてい
る。By the way, in the construction of a shaft for the propulsion method and the deep foundation pile method, a corrugated sheet made of corrugated thin steel sheet or the like is conventionally added as a liner plate to the wall surface of an excavation hole in a cylindrical shape. The thing which gave the lining by concrete etc. in the inside is known.
【０００５】また、例えば、特開平９−３１９５４号公
報には、このような推進工法用の立坑等を構築するため
のライナープレートあるいは型枠としてコルゲート管を
地中で加工する方法が記載されている。[0005] For example, Japanese Patent Application Laid-Open No. 9-31954 describes a method of processing a corrugated pipe underground as a liner plate or formwork for constructing such a shaft for a propulsion method. I have.
【０００６】すなわち、ケーシングとともに地中に建込
んだ大径の薄肉円筒管内に、ガイド軸に沿って昇降可能
な駆動ユニットとその下方に設けられた成形ヘッドとか
らなるコルゲート成形装置を挿入し、ケーシングおよび
コルゲート成形装置を徐々に引き上げながら、リンク機
構を介して径方向に水平移動する成形ヘッドで薄肉円筒
管を径方向外側に押圧し、薄肉円筒管を下方から、順
次、一定ピッチでコルゲート化して行くもので、コルゲ
ートによって薄肉管の強度が増大する。That is, a corrugating apparatus comprising a drive unit which can be raised and lowered along a guide shaft and a forming head provided thereunder is inserted into a large-diameter thin-walled cylindrical tube built in the ground together with a casing, While gradually pulling up the casing and corrugating device, the forming cylinder that moves horizontally in the radial direction via the link mechanism presses the thin-walled cylindrical tube radially outward, and corrugates the thin-walled cylindrical tube sequentially from below at a constant pitch. Corrugates increase the strength of thin-walled tubes.
【０００７】[0007]
【発明が解決しようとする課題】従来の既成杭としての
節杭は、工場生産であるため、品質管理が容易で高品質
の杭が得られるという利点がある反面、工場から現場ま
での搬送の問題や現場での施工に重機を必要とするとい
った問題がある。また、打込み工法の場合には、振動や
騒音の問題もある。Conventional knot piles as preformed piles are manufactured in a factory, and therefore have the advantage that quality control is easy and high quality piles can be obtained. There is a problem that heavy machinery is required for construction on site. In the case of the driving method, there are also problems of vibration and noise.
【０００８】このようなことから、特に都市部の狭隘な
現場条件では既成杭の施工が困難となり、現場打ち杭を
施工せざるを得ない場合も多い。[0008] For these reasons, it is difficult to construct existing piles especially in narrow site conditions in urban areas, and in many cases, it is necessary to construct cast-in-place piles.
【０００９】一方、現場打ち杭の場合、打設されるコン
クリート等の品質の管理が難しく、また長手方向にスト
レートな形状となることや地山と接する部分の品質が確
保しにくいことから、先端支持力および周面摩擦抵抗に
よる周面支持力を得るためには太径とせざるを得ず、コ
ストの増大につながる。On the other hand, in the case of cast-in-place piles, it is difficult to control the quality of cast concrete and the like, and it is difficult to secure the quality of the portion that is straight in the longitudinal direction and the quality of the portion in contact with the ground. In order to obtain the supporting force due to the supporting force and the circumferential surface frictional resistance, the diameter must be increased, which leads to an increase in cost.
【００１０】本願発明は、地中におけるコルゲート管の
製造技術を現場打ち杭の施工に応用することで、現場打
ち節杭の施工を可能とし、支持力に優れた経済的な基礎
杭を提供することを目的としたものである。[0010] The present invention provides an economical foundation pile which enables the construction of a cast-in-place knot pile by applying the underground corrugated pipe manufacturing technology to the construction of a cast-in-place pile, and which is excellent in bearing capacity. It is intended for that purpose.
【００１１】[0011]
【課題を解決するための手段】本願の請求項１に係る現
場打ち節杭は、杭打設用の掘削孔内に建込まれ、長手方
向に軸部と軸部に対し十分拡径した節部を所定間隔ごと
交互に形成した捨型枠としての薄肉円筒管と、前記薄肉
円筒管内に打設された現場打ちコンクリートとからなる
ことを特徴とするものである。A cast-in-place piling according to claim 1 of the present application is built in an excavation hole for driving a pile, and has a shaft part and a diameter sufficiently enlarged with respect to the shaft part in the longitudinal direction. It is characterized by comprising a thin-walled cylindrical pipe as a discarded frame in which portions are alternately formed at predetermined intervals, and a cast-in-place concrete poured into the thin-walled cylindrical pipe.
【００１２】薄肉円筒管の節部は、従来の地中における
コルゲート管の製造技術を利用して成形することができ
る。すなわち、掘削孔に建込んだ薄肉円筒管の内側に、
節部の形状に対応する成形ヘッドを有する成形機を挿入
し、成形ヘッドを薄肉円筒管の径方向外側へ押し出し、
薄肉円筒管に押圧力を与えることで、所要の突出量を有
する節部を地中で成形することができる。The node of the thin-walled cylindrical pipe can be formed by using a conventional underground corrugated pipe manufacturing technique. That is, inside the thin-walled cylindrical pipe built in the borehole,
Insert a molding machine having a molding head corresponding to the shape of the node, extrude the molding head radially outward of the thin-walled cylindrical tube,
By applying a pressing force to the thin cylindrical tube, a node having a required amount of protrusion can be formed in the ground.
【００１３】なお、成形機については、前述した特開平
９−３１９５４号公報記載のリンク機構を有する形式の
ものの他、例えば平面形状が円弧状の複数の成形ヘッド
を油圧ジャッキなどで直接径方向に押し出す形式のもの
などでもよい。In addition to the molding machine having a link mechanism described in Japanese Patent Application Laid-Open No. Hei 9-31954, for example, a plurality of molding heads having an arc-shaped planar shape are directly radially formed by a hydraulic jack or the like. It may be of an extruding type.
【００１４】薄肉円筒管は、成形機の成形ヘッドを押し
付けることで容易に塑性変形して節部が形成される材質
のものを用いる必要があり、例えば薄肉鋼管や薄肉のア
ルミニウム管などの薄肉金属管が適するが、節部の成形
が可能なものであれば特に限定されない。The thin-walled cylindrical tube must be made of a material that can be easily plastically deformed by pressing a molding head of a molding machine to form a knot portion. For example, a thin-walled metal tube such as a thin-walled steel tube or a thin-walled aluminum tube must be used. A tube is suitable, but is not particularly limited as long as the node can be formed.
【００１５】現場打ちコンクリートの打設に当たって
は、必要に応じ、あらかじめ薄肉円筒管の内側に鉄筋籠
を挿入することで、表面が薄肉円筒管で被覆された鉄筋
コンクリート製の現場打ち節杭とすることができる。When casting the cast-in-place concrete, a cast-in-place pile made of reinforced concrete whose surface is covered with a thin-walled cylindrical tube is inserted by inserting a reinforcing rod inside the thin-walled cylindrical tube in advance as necessary. Can be.
【００１６】また、従来の現場打ちコンクリート杭の施
工方法としては、掘削孔の掘削方法やコンクリートの打
設方法の違いなどから、大きく分けて、ベノト工法、リ
バース工法、アースドリル工法などがあるが、掘削方
法、コンクリートの打設方法等は、特に限定されない。[0016] Conventional methods for constructing cast-in-place concrete piles can be broadly divided into methods such as a benot method, a reverse method, and an earth drill method due to differences in a method of excavating a hole and a method of placing concrete. The method of excavation, the method of placing concrete, and the like are not particularly limited.
【００１７】薄肉円筒管の建込みについては、薄肉円筒
管の外側に別途ケーシングを用いる場合とケーシングを
必要としない場合とが考えられる。また、剛性上問題が
なければ、捨型枠となる薄肉円筒管を掘削時のケーシン
グとしても機能させることが考えられる。Regarding the installation of a thin-walled cylindrical tube, it is considered that a case where a casing is separately provided outside the thin-walled cylindrical tube or a case where a casing is not required. If there is no problem in terms of rigidity, it is conceivable that the thin-walled cylindrical pipe, which is a discarded formwork, also functions as a casing for excavation.
【００１８】請求項２は、前記薄肉円筒管は長手方向に
連続する波形状を有するコルゲート管に、節部を加工し
たものである場合である。A second aspect of the present invention is that the thin-walled cylindrical tube is a corrugated tube having a corrugated shape that is continuous in a longitudinal direction and is processed with a node.
【００１９】薄肉円筒管の場合、掘削孔内に建込む際に
剛性が不足する場合には、コルゲート加工を施した高剛
性のコルゲート管を用いる。In the case of a thin-walled cylindrical pipe, if the rigidity is insufficient when the pipe is installed in a borehole, a corrugated high-rigidity corrugated pipe is used.
【００２０】なお、あらかじめコルゲート加工が施され
たコルゲート管を掘削孔に建込むこともできるし、特開
平９−３１９５４号公報記載の方法と同様の方法で、薄
肉円筒管をケーシングとともに建込み、ケーシングを引
き上げつつ、内側に挿入したコルゲート形成機でコルゲ
ート加工することもできる。後者の場合には、コルゲー
ト加工と節部の加工を、例えば異なる形状あるいは異な
る押出量を有する成形ヘッドを備えた単一の成形機で行
うことも考えられる。It is to be noted that a corrugated pipe which has been subjected to corrugation processing in advance can be built into a drilling hole, or a thin-walled cylindrical pipe and a casing can be built in the same manner as the method described in JP-A-9-31954. It is also possible to carry out corrugating with a corrugating machine inserted inside while raising the casing. In the latter case, it is also conceivable to carry out the corrugating and the knot processing on a single molding machine provided with molding heads having different shapes or different extrusion rates, for example.
【００２１】本願発明の現場打ち節杭で、節部の外径は
軸部の外径の１．２〜１．５倍程度が適当である。節部
の外形が軸部の１．２倍未満では、高い周面抵抗によ
り、周面支持力を増すという節杭本来の機能が必ずしも
十分とは言えず、また節部の外径を軸部の外径の１．５
倍より大きくすることは、薄肉円筒管の加工上、難し
い。ただし、加工が可能であれば、１．５倍より大きく
することも考えられる。In the cast-in-place knotted pile according to the present invention, the outer diameter of the node is suitably about 1.2 to 1.5 times the outer diameter of the shaft. If the outer diameter of the knot is less than 1.2 times that of the shaft, the inherent function of the knot pile, which increases the circumferential surface supporting force due to high circumferential resistance, is not always sufficient. Outer diameter of 1.5
It is difficult to make it larger than twice in processing thin-walled cylindrical tubes. However, if processing is possible, it is conceivable to make it larger than 1.5 times.
【００２２】[0022]
【発明の実施の形態】図１は、本願発明に係る現場打ち
節杭の一実施形態を示したもので、図１(e)が完成した
現場打ち節杭に相当し、地中で節部６を形成した薄肉円
筒管１と、この薄肉円筒管１内に打設したコンクリート
７からなる。1 shows an embodiment of a cast-in-place knotted pile according to the present invention. FIG. 1 (e) corresponds to a completed cast-in-place knotted pile. 6 comprises a thin-walled cylindrical tube 1 and concrete 7 cast into the thin-walled cylindrical tube 1.
【００２３】施工手順の一例を説明すると以下の通りで
ある。 杭打設位置に掘削機３で掘削孔を掘削する（図１(a)
参照）。なお、この例では、ケーシング２の内側に薄肉
鋼管などの薄肉円筒管１を挿入しておき、ケーシング２
と薄肉円筒管１の建込みと掘削孔の掘削を同時に行って
いる。 ケーシング２および薄肉円筒管１が所定の深さに達し
たら（図１(b) 参照）、薄肉円筒管１の内側に成形機４
を挿入し、ケーシング２を引き上げながら、地中に残し
た薄肉円筒管１に成形機４で、コルゲート加工および節
部６の加工を行う（図１(c) 参照）。 薄肉円筒管１の下端から上端まで、コルゲート加工お
よび節部６の加工を完了したら（図１(d) 参照）、薄肉
円筒管１内にコンクリート７を打設する。なお、図示を
省略しているが、あらかじめ鉄筋籠などを挿入しておく
ことで、鉄筋コンクリート製の現場打ち節杭となる。 コンクリート７の硬化により、表面が薄肉円筒管１で
被覆され、軸部５および節部６を有する現場打ち節杭が
形成される（図１(e) 参照）。An example of the construction procedure will be described below. Drilling holes are excavated at the pile driving position by the excavator 3 (Fig. 1 (a)
reference). In this example, the thin cylindrical pipe 1 such as a thin steel pipe is inserted inside the casing 2 and the casing 2
And the excavation of the excavation hole are performed simultaneously. When the casing 2 and the thin-walled cylindrical tube 1 reach a predetermined depth (see FIG. 1B), the molding machine 4 is placed inside the thin-walled cylindrical tube 1.
Is inserted, and the casing 2 is lifted up, and the thin-walled cylindrical tube 1 left in the ground is subjected to corrugation processing and processing of the node 6 by the molding machine 4 (see FIG. 1 (c)). When the corrugating process and the processing of the node 6 are completed from the lower end to the upper end of the thin-walled cylindrical tube 1 (see FIG. 1D), concrete 7 is poured into the thin-walled cylindrical tube 1. In addition, although illustration is omitted, it becomes a cast-in-place pile made of reinforced concrete by inserting a reinforced cage etc. beforehand. Due to the hardening of the concrete 7, the surface is covered with the thin-walled cylindrical tube 1 and a cast-in-place knotted pile having the shaft portion 5 and the node portion 6 is formed (see FIG. 1 (e)).
【００２４】図２は、上記における成形機４によるコ
ルゲート加工および節部６の加工の様子を示したもの
で、本実施形態においては、成形機４に油圧ジャッキな
どで径方向に押し出されるコルゲート成形ヘッド４ａと
節部成形ヘッド４ｂを設け、コルゲート成形ヘッド４ａ
で波形の加工を行い、その下方の節部成形ヘッド４ｂで
節部６を所定間隔ごと加工する構成となっている。FIG. 2 shows a state of the corrugating process and the processing of the node 6 by the molding machine 4 described above. In the present embodiment, the corrugating process which is extruded radially by a hydraulic jack or the like into the molding machine 4 is shown. A head 4a and a knot forming head 4b are provided.
, And the nodes 6 are processed at predetermined intervals by the node forming head 4b therebelow.
【００２５】[0025]
【発明の効果】現場打ちであるため、従来の既成杭に
おける搬送が不要で、低振動、低騒音で施工でき、都市
部の狭隘な現場条件でも施工可能である。 現場打ちでありながら、所定間隔ごと節部を有し、節
部、特にその下面において大きな周面摩擦抵抗が得られ
るため、基礎杭としての支持力が向上し、全体としてコ
ンクリート使用量も削減できるため、コストの低減が図
れる。 地中で型枠となる薄肉円筒管に節部を加工する際、薄
肉円筒管を径方向外側に押圧することで、地山にも押圧
力が作用するため、節部における薄肉円筒管と地山の密
着度が増し、内側にコンクリートを打設した後は、節杭
として大きな周面摩擦力が得られる。[Effect of the Invention] Since it is cast-in-place, it does not need to be transported by conventional conventional piles, can be constructed with low vibration and low noise, and can be constructed even in narrow on-site conditions in urban areas. Although it is cast-in-place, it has knots at predetermined intervals, and a large circumferential friction resistance is obtained at the knots, especially at the lower surface, so that the supporting force as a foundation pile is improved and the amount of concrete used can be reduced as a whole Therefore, cost can be reduced. When processing a node into a thin-walled cylindrical pipe that forms a formwork in the ground, pressing the thin-walled cylindrical pipe outward in the radial direction also exerts a pressing force on the ground. After the concrete is poured inside, the degree of adhesion of the mountain is increased, and a large peripheral friction force is obtained as a nodal pile.
【図１】本願発明に係る現場打ち節杭の一実施形態につ
いて、その施工手順の一例を概略的に示した鉛直断面図
である。FIG. 1 is a vertical sectional view schematically showing an example of a construction procedure of an embodiment of a cast-in-place knotted pile according to the present invention.
【図２】成形機によるコルゲート加工および節部加工の
説明図である。FIG. 2 is an explanatory view of corrugation processing and knot processing by a molding machine.
１…薄肉円筒管、２…ケーシング、３…掘削機、４…成
形機、４ａ…コルゲート成形ヘッド、４ｂ…節部成形ヘ
ッド、５…軸部、６…節部、７…コンクリートDESCRIPTION OF SYMBOLS 1 ... Thin-walled cylindrical tube, 2 ... Casing, 3 ... Excavator, 4 ... Molding machine, 4a ... Corrugated forming head, 4b ... Node forming head, 5 ... Shaft, 6 ... Node, 7 ... Concrete
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平尾 幸太郎 大阪府大阪市中央区高麗橋２丁目１番10号 株式会社ジオトップ内 Ｆターム(参考） 2D041 AA01 BA22 CA03 DA03 EA02 EA05 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kotaro Hirao 2-1-1, Koraibashi, Chuo-ku, Osaka-shi, Osaka F-term in Geotop Co., Ltd. (Reference) 2D041 AA01 BA22 CA03 DA03 EA02 EA05
Claims (2)
向に軸部と軸部に対し十分拡径した節部を所定間隔ごと
交互に形成した捨型枠としての薄肉円筒管と、前記薄肉
円筒管内に打設された現場打ちコンクリートとからなる
ことを特徴とする現場打ち節杭。1. A thin-walled cylindrical tube which is built in a drilling hole for driving a pile, and has a shaft portion and nodes which are sufficiently enlarged in the longitudinal direction and are formed alternately at predetermined intervals. And cast-in-place concrete cast in the thin-walled cylindrical pipe.
形状を有するコルゲート管に、前記節部を加工したもの
である請求項１記載の現場打ち節杭。2. The cast-in-place knot pile according to claim 1, wherein the thin-walled cylindrical pipe is formed by processing the knot portion into a corrugated pipe having a corrugated shape continuous in a longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10164566A JP2000001849A (en) | 1998-06-12 | 1998-06-12 | Cast-in-place knot pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10164566A JP2000001849A (en) | 1998-06-12 | 1998-06-12 | Cast-in-place knot pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000001849A true JP2000001849A (en) | 2000-01-07 |
Family
ID=15795610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10164566A Pending JP2000001849A (en) | 1998-06-12 | 1998-06-12 | Cast-in-place knot pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000001849A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010079268A (en) * | 2001-06-28 | 2001-08-22 | 임철웅 | Fiber-concrete pile and construction method by using it |
| CN102561332A (en) * | 2012-02-09 | 2012-07-11 | 东南大学 | Continuous variable-diameter cement-soil mixed pile forming method |
| CN106400782A (en) * | 2016-06-28 | 2017-02-15 | 中铁隧道集团二处有限公司 | Construction method for construction of foundation pit support bored secant pile walls with rotary drilling rig |
| CN107724444A (en) * | 2017-10-29 | 2018-02-23 | 荆门创佳机械科技有限公司 | A kind of improved high-rating generator basis embedded steel tube off normal bearing calibration |
| JP2018193686A (en) * | 2017-05-12 | 2018-12-06 | 株式会社技研製作所 | Construction method of support pile |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559953A (en) * | 1978-07-06 | 1980-01-24 | Kubota Ltd | Method and apparatus for installing steel pipe pile |
| JPS5955916A (en) * | 1982-09-20 | 1984-03-31 | Takenaka Komuten Co Ltd | On-site pile construction in banking-created ground |
| JPH02221586A (en) * | 1989-02-21 | 1990-09-04 | Kyoei Doken:Kk | Method and device for liner plate execution of shaft |
| JPH05321559A (en) * | 1992-05-19 | 1993-12-07 | Michio Tanaka | Pile skeleton expander for site-cast concrete pile |
| JPH05339940A (en) * | 1992-06-09 | 1993-12-21 | Michio Tanaka | Cast-in-place concrete pile |
| JPH07102556A (en) * | 1993-10-05 | 1995-04-18 | Taisei Corp | Reinforcing structure of cast-in-place concrete pile |
| JPH0931954A (en) * | 1995-07-21 | 1997-02-04 | Kopurosu:Kk | Corrugated pipe for shaft |
-
1998
- 1998-06-12 JP JP10164566A patent/JP2000001849A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS559953A (en) * | 1978-07-06 | 1980-01-24 | Kubota Ltd | Method and apparatus for installing steel pipe pile |
| JPS5955916A (en) * | 1982-09-20 | 1984-03-31 | Takenaka Komuten Co Ltd | On-site pile construction in banking-created ground |
| JPH02221586A (en) * | 1989-02-21 | 1990-09-04 | Kyoei Doken:Kk | Method and device for liner plate execution of shaft |
| JPH05321559A (en) * | 1992-05-19 | 1993-12-07 | Michio Tanaka | Pile skeleton expander for site-cast concrete pile |
| JPH05339940A (en) * | 1992-06-09 | 1993-12-21 | Michio Tanaka | Cast-in-place concrete pile |
| JPH07102556A (en) * | 1993-10-05 | 1995-04-18 | Taisei Corp | Reinforcing structure of cast-in-place concrete pile |
| JPH0931954A (en) * | 1995-07-21 | 1997-02-04 | Kopurosu:Kk | Corrugated pipe for shaft |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010079268A (en) * | 2001-06-28 | 2001-08-22 | 임철웅 | Fiber-concrete pile and construction method by using it |
| CN102561332A (en) * | 2012-02-09 | 2012-07-11 | 东南大学 | Continuous variable-diameter cement-soil mixed pile forming method |
| CN102561332B (en) * | 2012-02-09 | 2014-01-22 | 东南大学 | Continuous variable-diameter cement-soil mixed pile forming method |
| CN106400782A (en) * | 2016-06-28 | 2017-02-15 | 中铁隧道集团二处有限公司 | Construction method for construction of foundation pit support bored secant pile walls with rotary drilling rig |
| JP2018193686A (en) * | 2017-05-12 | 2018-12-06 | 株式会社技研製作所 | Construction method of support pile |
| CN107724444A (en) * | 2017-10-29 | 2018-02-23 | 荆门创佳机械科技有限公司 | A kind of improved high-rating generator basis embedded steel tube off normal bearing calibration |
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