JPH1113062A - Simplified pneumatic caisson earth retaining construction method - Google Patents

Simplified pneumatic caisson earth retaining construction method

Info

Publication number
JPH1113062A
JPH1113062A JP18314897A JP18314897A JPH1113062A JP H1113062 A JPH1113062 A JP H1113062A JP 18314897 A JP18314897 A JP 18314897A JP 18314897 A JP18314897 A JP 18314897A JP H1113062 A JPH1113062 A JP H1113062A
Authority
JP
Japan
Prior art keywords
sheet pile
box
steel sheet
construction
shaped
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
Application number
JP18314897A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Nakamura
廣義 中村
Takeo Nishimura
武雄 西村
Original Assignee
Nakamura Kensetsu Kk
中村建設株式会社
Sanyo Hightech:Kk
株式会社山陽ハイテック
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nakamura Kensetsu Kk, 中村建設株式会社, Sanyo Hightech:Kk, 株式会社山陽ハイテック filed Critical Nakamura Kensetsu Kk
Priority to JP18314897A priority Critical patent/JPH1113062A/en
Publication of JPH1113062A publication Critical patent/JPH1113062A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a labor-saving simplified pneumatic caisson earth retaining construction method using a new type of a steel sheet pile integrated with a support in which a box-shaped sheet pile of a high pressure resistant type and a rectangular parallelopiped-shaped support assembled with a roller and a jack, and including a hydraulic cylinder are used. SOLUTION: In a simplified pneumatic caisson earth retaining construction method, a box-shaped sheet pile 1, and a rectangular parallelopiped-shaped support 2 assembled with a jack for reaction force and a roller 3 for reducing friction force as derricking members, and provided with a hydraulic cylinder included in a column for vertical motion are used, so the box-shaped sheet pile 1 and the rectangular parallelopiped-shaped support 2 are interlocked with each other to perform boring and caisson fitting in. Work can thus be performed with less labor speedily and safely, so construction cost becomes low. Breakage or deformation of a steel sheet pile, ground sinking on the back of the steel sheet pile, defective driving of the steel sheet pile because of an underground obstacle, etc., which are problems in conventional earth retaining construction method can be solved at a stroke.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は新形の鋼矢板と支保
工を一体化した簡易潜函山留工法に関し、さらに詳しく
は、高耐圧性の箱形矢板と、ローラー、ジャッキを内部
に組み込み、且つ油圧シリンダーを内蔵した直方体状支
保工を使用する省力タイプの簡易潜函山留工法に係るも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple submersible siding method integrating a new steel sheet pile and a shoring system, and more specifically, a high pressure-resistant box sheet pile, rollers and jacks are incorporated therein. In addition, the present invention relates to a labor-saving type simple submersible cranes construction method using a rectangular parallelepiped support having a built-in hydraulic cylinder.
【0002】[0002]
【従来の技術】山留工事は構築物周辺の地盤崩壊を防ぐ
山留壁と、その壁にかかる土圧・水圧を支持する支保工
を施工する工事であり、小工事においては山留壁に鋼矢
板を、また支保工に井型切張あるいは迫持切張を使用し
ている。たとえば下水道管敷設工事では地下に発進口と
到達口を施工して、掘進機によりヒューム管を発進口か
ら到達口まで推進して行くが、この発進口と到達口は山
留工法で施工され、鋼矢板と腹起し、切張等で山留され
ている。この山留工法の従来の施工方法は、はじめに長
尺物の鋼矢板を打ち込んでから掘削をしたのち、切張を
入れる、いわゆる後施工方法であり、土質や施工場所に
よっては鋼矢板は埋め殺しにされる場合が多い。また従
来の鋼矢板は、厚さがうすい鋼板1枚からなっていて、
この鋼矢板と腹起しや切張等の支保工との接触は面接触
になっている。
2. Description of the Related Art A pier is constructed by installing a pier to prevent the collapse of the ground around a building and a shoring to support the earth pressure and water pressure applied to the wall. A sheet pile is used, and a well-shaped or close-cutting is used for the shoring. For example, in the laying of sewer pipes, a start port and an arrival port are constructed underground, and a fume pipe is driven from the start port to the arrival port by an excavator. It is upset with a steel sheet pile, and is pierced by cutting. The conventional construction method of this mountain retaining method is a so-called post-construction method in which a long steel sheet pile is first driven, excavated, and then a cut is made. Often it is. In addition, conventional steel sheet piles consist of a thin steel sheet,
The contact between the steel sheet pile and the shoring work such as protruding or cutting is surface contact.
【0003】[0003]
【発明が解決しようとする課題】前記のように、従来の
山留工法の工事は山留壁と支保工を施工して工事を行
い、山留壁としては厚さが比較的うすく、可成り長尺の
鋼矢板を使用している。この鋼矢板は厚さがうすく、高
い加重でたわむ性質があって、比較的弱いために、堅い
地盤や玉石、転石等の障害物がある地層へは打ち込むこ
とができない。またこの鋼矢板は剛性が比較的小さいの
で、シルト質の軟弱地盤で使用する場合には変形が大き
くなりやすくて、鋼矢板背面の地盤沈下が発生しやすい
という問題もある。
As described above, in the conventional shoring method, the shoring wall and the shoring work are carried out to construct the shoring wall. Long steel sheet piles are used. This steel sheet pile is thin and has the property of bending under high load, and is relatively weak. Therefore, it cannot be driven into a hard ground or a stratum having obstacles such as boulders and boulders. Further, since the steel sheet pile has relatively low rigidity, when it is used on soft silty ground, there is a problem that the deformation is apt to be large, and the ground subsidence on the back of the steel sheet pile is apt to occur.
【0004】さらに従来の鋼矢板はその工事に使うすべ
てのものを完全にかみ合わせた状態で打ち込むことが難
しく、はずれが発生しやすいので、溶接等の補修が必要
になり、工事費がかさむ結果となっていた。また長尺の
鋼矢板を使用する時には、架空線の下での施工ができ
ず、逆に短尺の鋼矢板を使用する場合には工事の途中で
鋼矢板を溶接して接続しなければならない欠点も有して
いる。
Further, it is difficult for conventional sheet piles to be driven in a state where all of the materials used for the construction are completely engaged with each other, and the steel sheet piles are likely to come off. Therefore, repairs such as welding are required, and the construction cost increases. Had become. In addition, when using long steel sheet piles, construction cannot be performed under overhead wires, and conversely, when using short steel sheet piles, steel sheet piles must be welded and connected during construction. Also have.
【0005】一方従来の支保工としては井型切張あるい
は迫持切張を使用しており、施工方法としては先に鋼矢
板を打ち込んでから掘削したのち、井型切張あるいは迫
持切張等の支保工を入れるいわゆる後施工の方法をとっ
ている。この従来の後施工の方法では、鋼矢板が大きく
変形しやすいために鋼矢板を引き抜いたのちの埋戻しが
不完全となって鋼矢板背面の地盤が沈下することも多
い。 またこの従来の施工方法では地中障害物を未発見
のまま打ち込むケースが多いので、鋼矢板が希望の深さ
まで入れられない工事も多々あるという多くの問題点を
もっている。
[0005] On the other hand, a conventional shoring method uses a well-shaped or tensioned shearing. The method of construction is to first drive a steel sheet pile and then excavate, and then drill a well-shaped or tensioned shearing. The so-called post-construction method that includes support works such as is adopted. In this conventional post-construction method, since the steel sheet pile is easily deformed greatly, backfilling after pulling out the steel sheet pile is incomplete, and the ground at the back of the steel sheet pile often sinks. In addition, in this conventional construction method, there are many cases in which an underground obstacle is driven without being found, so that there are many constructions in which a steel sheet pile cannot be inserted to a desired depth.
【0006】[0006]
【問題を解決するための手段】本発明は前記のような問
題点を有しない山留工法について鋭意研究の結果、達成
されたものである。つまり本発明は鋼矢板と支保工を使
用して施工する山留工法において、鋼矢板としては、支
保工のガイドに沿って上下移動できるレ−ルを備えた箱
形矢板を使用する一方、支保工としては、施工前にあら
かじめ、腹起材、火打材および支柱を用いて直方体状の
枠を形成しておき(以下これを直方体状支保工と称す
る)、該支柱には直方体状支保工を上下移動させるため
の油圧シリンダーを内蔵し、且つ腹起材には摩擦力低下
用ローラーと反力用ジャッキを組み込んでしゃくとり虫
のように上下移動が可能な直方体状支保工を使用して、
箱形矢板と直方体状支保工を連動させながら、掘削、潜
函、圧入を行うことを特徴とする簡易潜函山留工法であ
る。
Means for Solving the Problems The present invention has been achieved as a result of earnest research on a ridge retaining method which does not have the above-mentioned problems. In other words, in the present invention, in a mountain retaining method using a steel sheet pile and a shoring method, a box-type sheet pile having rails that can move up and down along a shoring guide is used as the steel sheet pile, while Prior to the construction, a cuboid frame is formed beforehand by using a belly material, a fired material and a support (hereinafter referred to as a rectangular support), and the support is provided with a rectangular support. Use a rectangular parallelepiped support with a built-in hydraulic cylinder to move up and down, and a roller for reducing friction and a jack for reaction force incorporated in the belly material, which can move up and down like a snorkeling insect,
This is a simple method of excavating, submerging, and press-fitting while linking a box-shaped sheet pile and a rectangular parallelepiped supporter.
【0007】本発明の簡易潜函山留工法によって、前記
の従来の山留工法がもっているすべての問題点を一挙に
解決した。つまり本発明で鋼矢板を箱形にすることによ
って、高い土圧でも変形しにくくなったので、シルト質
の軟弱地盤においても、箱形矢板背面の地盤沈下が可成
り減少した。この箱形矢板の上端部には長さを伸ばすた
めに、接続用の継手を付設する方が、短尺の鋼矢板でも
能率よく使えるようになって、架空線の下でも容易に工
事が可能となるので、望ましい。またこの箱形矢板の先
端部には高圧ウォータージェットノズルを設けることに
よって、堅い地盤等でも箱形矢板を容易に打ち込むこと
ができるようになった。
[0007] All the problems of the above-mentioned conventional mountain retaining method have been solved at once by the simple submersible mountain retaining method of the present invention. That is, by making the steel sheet pile into a box shape in the present invention, the steel sheet pile is hardly deformed even at a high earth pressure, so that even in the silty soft ground, the land subsidence on the back face of the box sheet pile is considerably reduced. In order to extend the length of this box-shaped sheet pile, it is better to attach a joint for connection, so that even short steel sheet piles can be used more efficiently, and construction can be easily done under overhead wires. It is desirable. By providing a high-pressure water jet nozzle at the tip of the box-shaped sheet pile, the box-shaped sheet pile can be easily driven even on hard ground.
【0008】さらに本発明では直方体状支保工に油圧シ
リンダー、ジャッキおよびローラーを設けているが、こ
れによって支保工の上下移動が容易となって、前施工方
法が可能となったので、箱形矢板背面の地盤沈下が大き
く減少し、且つ箱形矢板を打ち込む前に地中障害物が発
見できて除去できるために、箱形矢板を常に希望の深さ
まで入れることも可能となった。
Further, in the present invention, the hydraulic cylinder, the jack and the roller are provided on the rectangular parallelepiped support. However, this facilitates the vertical movement of the support and enables a pre-installation method. The ground subsidence on the back side is greatly reduced, and since an underground obstacle can be found and removed before driving the box-shaped sheet pile, the box-shaped sheet pile can always be inserted to a desired depth.
【0009】[0009]
【実施例】図1は本発明の簡易潜函山留工法の一部切欠
した平面図であり、図2は図1の一部切欠した立面図で
ある。図3は腹起材のジャッキ部、ローラー部の詳細図
である。図4は工事個所を素掘し、1段目の直方体状支
保工を組立後、1段目の箱形矢板を組立て途中の斜視図
である。第5図は2段目の直方体状支保工と箱形矢板を
組立てた一部切欠の斜視図である。
FIG. 1 is a partially cutaway plan view of the simple submersible cranes construction method of the present invention, and FIG. 2 is a partially cutaway elevational view of FIG. FIG. 3 is a detailed view of a jack portion and a roller portion of the belly material. FIG. 4 is a perspective view showing a state in which the first place box-shaped sheet pile is being assembled after excavating the construction site and assembling the first-stage rectangular parallelepiped support. FIG. 5 is a perspective view of a partially cutout in which a second rectangular parallelepiped support and a box-shaped sheet pile are assembled.
【0010】まず鋼板で箱形の矢板(1)をつくり、そ
の両端部には横方向に拡げるためのつなぎを設ける一
方、上端部には縦方向に伸ばすための継手(7)を付設
し、さらにその先端部には高圧ウォータージェットノズ
ル(5)を付設した。また支保工(2)は鋼鉄製のボッ
クス形支柱とH型鋼の腹起材で直方体状の枠を組み立て
てつくるが、ここで使用する腹起材には前記の箱形矢板
(1)が当接する位置にローラー(3)とジャッキ
(4)を1つおきに交互に組み込むとともに、支柱には
油圧シリンダ−(6)を内蔵させ、箱形矢板(1)と直
方体状支保工(2)の上下移動が容易にできるようにし
た。
First, a box-shaped sheet pile (1) is made of a steel plate, and a joint for expanding the box sheet is provided at both ends, and a joint (7) for extending the sheet is provided at an upper end thereof. Further, a high-pressure water jet nozzle (5) was attached to the tip. The shoring (2) is made by assembling a rectangular parallelepiped frame with a steel box-shaped column and H-shaped steel raised material. The box-shaped sheet pile (1) is used for the raised material used here. Rollers (3) and jacks (4) are alternately incorporated at the contact positions, and a hydraulic cylinder (6) is built in the support, and the box-shaped sheet pile (1) and the rectangular parallelepiped support (2) are installed. Up and down movement is made easy.
【0011】次に工事場所を素掘して、この個所に1段
目の直方体状支保工(2)を組立てた。この直方体状支
保工(2)の外側に沿って先端部に高圧ウォータージェ
ットノズル(5)を組み込んだ箱形矢板(1)を圧入し
て、1段目の簡易潜函山留工事を終了した。この工事で
は、さらに深く掘削する必要があったので、引き続いて
掘削および潜函を行ったのち、さらに2段目の直方体状
支保工を組立てて、2段目の箱形矢板を順次1段目の箱
形矢板の継手(7)にセットしてから、圧入を行い、2
段目の箱形矢板の組み立てを完了した。 以上の簡易潜
函山留工法は箱形矢板の圧入が非常にスムースに行わ
れ、箱形矢板の変形も全くなかった。また、目的の工事
が終わってから箱形矢板の引き抜きと直方体状支保工の
解体・取出しをして、土の埋戻しを行ったが、地盤沈下
も少なかった。
Next, a construction site was dug out, and a first-stage rectangular parallelepiped support (2) was assembled at this location. A box-shaped sheet pile (1) incorporating a high-pressure water jet nozzle (5) was press-fitted along the outside of the rectangular parallelepiped support (2) at the tip end, and the first-stage simple submersible mountain retaining work was completed. In this construction, it was necessary to dig deeper, so after digging and submerging, the second-stage rectangular parallelepiped support was assembled, and the second-stage box-shaped sheet pile was sequentially moved to the first-stage. After setting it in the joint (7) of the box-shaped sheet pile, press-fit
The assembly of the box-shaped sheet pile of the tier was completed. In the above simple method, the press-fitting of the box-shaped sheet pile was performed very smoothly, and the box-shaped sheet pile was not deformed at all. After the construction was completed, the box-shaped sheet piles were pulled out and the rectangular support was dismantled and removed, and the soil was backfilled. However, land subsidence was small.
【0012】[0012]
【発明の効果】以上記述したように本発明は箱形矢板
と、腹起材にジャッキおよびローラーを組み込み、且つ
支柱に油圧シリンダーを内蔵した直方体状支保工を使用
して施工を行うもので(前施工方法)、本発明により工
事が安全にできるようになった。また、本発明によって
作業を機械化できて人手を減すことが可能となったの
で、工事費が安くなった。また本発明は横方向の掘削で
も、縦方向の掘削と同様に行えるため、応用範囲が広
い。さらにこの簡易潜函山止工法はマルチ方式が可能な
ために大きな工事にも使用できるので、今後がたのしみ
な方法である。
As described above, the present invention is carried out by using a box-shaped sheet pile and a rectangular parallelepiped support having a jack and a roller incorporated in a belly material and a hydraulic cylinder incorporated in a support ( Pre-construction method), and the present invention has made construction possible safely. In addition, the present invention makes it possible to mechanize the work and reduce labor, so that the construction cost is reduced. In addition, the present invention can be applied to a horizontal excavation in the same manner as a vertical excavation, and thus has a wide range of applications. In addition, the simple method of stopping the submersible hills can be used for large-scale construction because it is possible to use a multi-method.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の簡易潜函山留工法の一部切欠した平面
図である。
FIG. 1 is a partially cutaway plan view of the simple submersible cranes construction method of the present invention.
【図2】図1の一部切欠した立面図である。FIG. 2 is a partially cut away elevation view of FIG. 1;
【図3】腹起材のジャッキ部、ローラー部の詳細図であ
る。
FIG. 3 is a detailed view of a jack portion and a roller portion of the belly material.
【図4】工事個所を素掘し、1段目の直方体状支保工を
組立て後、1段目の箱形矢板を組立て途中の斜視図であ
る。
FIG. 4 is a perspective view showing a state in which a first place box-shaped sheet pile is being assembled after excavating a work place and assembling a first-stage rectangular parallelepiped support;
【図5】2段目の直方体状支保工と箱形矢板を組立てた
一部切欠の斜視図である。
FIG. 5 is a perspective view of a partially cutout in which a second-stage rectangular parallelepiped support and a box-shaped sheet pile are assembled.
【符号の簡単な説明】[Brief description of reference numerals]
1 箱形矢板 2 直方体状支保工 3 ローラー 4 ジャッキ 5 高圧ウォータージェットノズル 6 油圧シリンダー 7 箱形矢板の継手 8 レ−ル 9 ガイド DESCRIPTION OF SYMBOLS 1 Box-shaped sheet pile 2 Rectangular support 3 Roller 4 Jack 5 High-pressure water jet nozzle 6 Hydraulic cylinder 7 Box-sheet pile joint 8 Rail 9 Guide

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 鋼矢板と支保工を用いて施工する山留工
    法において、鋼矢板としては、支保工のガイドに沿って
    上下移動できるレールを備えた箱形矢板を使用する一
    方、支保工としては、施工前にあらかじめ、腹起材、火
    打材および支柱を用いて直方体状の枠を形成しておき
    (以下これを直方体状支保工と称する)、該支柱には直
    方体状支保工を上下移動させるための油圧シリンダ−を
    内蔵し、且つ腹起材には摩擦力低下用ロ−ラ−と反力用
    ジャッキを組み込んでしゃくとり虫のように上下移動が
    可能な直方体状支保工を使用して、箱形矢板と直方体状
    支保工を連動させながら掘削、潜函、圧入を行うことを
    特徴とする簡易潜函山留工法。
    In the erection method using a steel sheet pile and a shoring method, a box type sheet pile having rails that can move up and down along a guide of the shoring method is used as the steel sheet pile. Before the construction, a cuboid frame is formed in advance using a belly material, a fired material and a strut (hereinafter referred to as a cuboid strut), and the cuboid strut is vertically moved to the strut. Use a rectangular cylinder support that has a built-in hydraulic cylinder and a roller for reducing frictional force and a jack for reaction force incorporated in the belly material and that can move up and down like a insect. A simple method of excavating, submerging and press-fitting while linking a box-shaped sheet pile and a rectangular parallelepiped supporter.
  2. 【請求項2】 箱形矢板が、長さを伸ばすために継手を
    設けたものである請求項1に記載の簡易潜函山留工法。
    2. The method of claim 1, wherein the box-shaped sheet pile is provided with a joint to increase the length.
  3. 【請求項3】 1段目に使用する箱形矢板が、圧入を容
    易にするために高圧ウォータージェットノズルを内蔵し
    たものである請求項1に記載の簡易潜函山留工法。
    3. The method of claim 1, wherein the box-shaped sheet pile used in the first stage incorporates a high-pressure water jet nozzle for facilitating press-fitting.
JP18314897A 1997-06-23 1997-06-23 Simplified pneumatic caisson earth retaining construction method Pending JPH1113062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18314897A JPH1113062A (en) 1997-06-23 1997-06-23 Simplified pneumatic caisson earth retaining construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18314897A JPH1113062A (en) 1997-06-23 1997-06-23 Simplified pneumatic caisson earth retaining construction method

Publications (1)

Publication Number Publication Date
JPH1113062A true JPH1113062A (en) 1999-01-19

Family

ID=16130650

Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106223342A (en) * 2015-12-24 2016-12-14 中国石油化工股份有限公司 Repairing operating pit quick supporting device and using method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106223342A (en) * 2015-12-24 2016-12-14 中国石油化工股份有限公司 Repairing operating pit quick supporting device and using method

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