JP2020153066A - Open shield machine - Google Patents

Open shield machine Download PDF

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JP2020153066A
JP2020153066A JP2019049403A JP2019049403A JP2020153066A JP 2020153066 A JP2020153066 A JP 2020153066A JP 2019049403 A JP2019049403 A JP 2019049403A JP 2019049403 A JP2019049403 A JP 2019049403A JP 2020153066 A JP2020153066 A JP 2020153066A
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shield machine
open shield
raising member
handrail
side wall
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JP6993372B2 (en
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植村　誠
Makoto Uemura
誠 植村
賢治郎 植村
Kenjiro Uemura
賢治郎 植村
正一 日浦
Shoichi Hiura
正一 日浦
中村　充博
Mitsuhiro Nakamura
充博 中村
直人 上林
Naoto Kamibayashi
直人 上林
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Abstract

To provide an open shield machine allowing arrangement of guard fence equipment and base boards to be removed when upper members are added, liner plates are installed on the shield machine, and upper stages are stuck in a case a guard fence with the base boards is required to be installed to prevent material on the ground from falling down to an opening of the shield machine on a generally smooth upper surface of the shield machine.SOLUTION: An L-shaped angle member comprising a lateral wall extending in a horizontal direction and a vertical wall in a vertical direction from one end of the lateral wall is used as a raising member for installation of liner plates, capable of being detachably attached on upper ends of right and left wall plates of the open shield machine with bolt and nuts, or by welding. A sheath pipe for a hand rail or to secure the hand rail is secured on the raising member.SELECTED DRAWING: Figure 1

Description

本発明は、オープンシールド工法に使用するオープンシールド機に関するものである。 The present invention relates to an open shield machine used in an open shield method.

周知のごとくオープンシールド工法は、開削工法（オープン工法）とシールド工法の長所を生かした合理性に富む工法である。 As is well known, the open shield method is a highly rational method that takes advantage of the open-cut method (open method) and the shield method.

このオープンシールド工法に使用するオープンシールド機では、シールド機を前方の機体の後端に後方の機体の前端が嵌入して、相互の嵌合部で屈曲可能としてカーブ施工を可能としたり、方向修正を行えるようにしたものがある。 In the open shield machine used for this open shield method, the front end of the rear body is fitted into the rear end of the front body of the shield machine, and the front end of the rear body is fitted so that it can be bent at the mutual fitting part to enable curve construction and direction correction. There is something that allows you to do.

その一例を説明するとオープンシールド機１は、図２２、図２３に示すように基本的には左右の側壁板１ａ，１ｂとこれら側壁板１ａ，１ｂと同程度の長さでその間を連結する底板１ｃとからなる前面、後面及び上面を開口したシールド機である。（図１９参照） To explain an example thereof, as shown in FIGS. 22 and 23, the open shield machine 1 basically connects the left and right side wall plates 1a and 1b with the same length as the left and right side wall plates 1a and 1b. It is a shield machine with 1c front, rear and upper surfaces open. (See Fig. 19)

該オープンシールド機１は矩形機体を前後方向で複数に分割し、フロント部２としての前方の機体の後端にジャッキ部・テール部３としての後方の機体の前端が嵌入して、相互の嵌合部で屈曲可能とした。 The open shield machine 1 divides a rectangular body into a plurality of parts in the front-rear direction, and the front end of the rear body as a jack portion and the tail part 3 is fitted into the rear end of the front body as the front part 2 to fit each other. It can be bent at the joint.

フロント部２は主として掘削を行うもので、前端と上面を開放面としてあり、矩形機体内で後部に後方へ向けて中折ジャッキ４を左右によせて、また上下複数段に配設している。 The front portion 2 is mainly used for excavation, and the front end and the upper surface are open surfaces, and the middle fold jacks 4 are arranged in a plurality of upper and lower stages in a rectangular machine body with the middle fold jacks 4 facing rearward toward the rear. ..

これに対してジャッキ部・テール部３はコンクリート函体８の設置を行うもので、ジャッキ部では機体内で前部に後方へ向けてシールドジャッキ５を左右によせて、また上下複数段に配設している。図中６はフロント部２の前端に設けたスライド土留め（可動分割刃口）、７は上面を開放面で側壁板１ａ，１ｂにかけ渡す梁部材、１０はプレスバー（押角）である。 On the other hand, the jack portion and the tail portion 3 are used to install the concrete box 8, and in the jack portion, the shield jack 5 is placed on the left and right sides toward the front and rear in the machine body, and is arranged in multiple stages above and below. It is set up. In the figure, 6 is a slide earth retaining device (movable split cutting edge) provided at the front end of the front portion 2, 7 is a beam member whose upper surface is an open surface and extends over the side wall plates 1a and 1b, and 10 is a press bar (push angle).

このようなオープンシールド機１を使用するオープンシールド工法は、図２６〜図２９に示すように、発進坑と到達坑との間で施工される。発進坑１１内で前記オープンシールド機を組立て、発進坑１１の前の地盤を地上に設置したシャベル系の掘削機１２で掘削し、該オープンシールド機１のシールドジャッキ５を伸長して発進坑１１内の反力壁に反力をとってオープンシールド機１を前進させ、地下構造物を形成する第１番目のコンクリート函体８を上方から吊り降し、オープンシールド機１のジャッキ部・テール部３内で縮めたシールドジャッキ５の後方にストラット９およびプレスバー１０とともにセットする。 As shown in FIGS. 26 to 29, the open shield method using such an open shield machine 1 is constructed between the starting pit and the reaching pit. The open shield machine is assembled in the start pit 11, the ground in front of the start pit 11 is excavated by a shovel type excavator 12 installed on the ground, and the shield jack 5 of the open shield machine 1 is extended to extend the start pit 11. The open shield machine 1 is advanced by taking a reaction force against the inner reaction force wall, and the first concrete box 8 forming the underground structure is suspended from above, and the jack and tail parts of the open shield machine 1 are suspended. Set together with the strut 9 and the press bar 10 behind the shield jack 5 contracted in 3.

また、発進坑１１はシートパイル等の土留壁で構成し、オープンシールド機１を発進させるにはこの土留壁を一部鏡切りするが、必要に応じて薬液注入等で発進坑１１の前方部分に地盤改良を施しておくこともある。 Further, the starting pit 11 is composed of a retaining wall such as a sheet pile, and in order to start the open shield machine 1, the retaining wall is partially mirror-cut, but if necessary, a chemical solution is injected to the front part of the starting pit 11. The ground may be improved.

次いで、同様にバックホウ等の掘削機１２でフロント部２の前面又は上面から土砂を掘削しかつ排土してオープンシールド機１を前進させ、前記第１番目のコンクリート函体８の前に第２番目のコンクリート函体８をジャッキ部・テール部３内に吊り降す。以下、同様の掘進及びコンクリート函体８のセット工程を繰返して、順次コンクリート函体８を縦列に地中に埋設し、後方のコンクリート函体８上にダンプ１４で埋戻しを施し、オープンシールド機１が到達坑１３まで達したならばこれを分解・撤去して工事を完了する。図中１５はグラウト機、１８は裏込注入材である。 Next, similarly, an excavator 12 such as a backhoe excavates and discharges earth and sand from the front surface or the upper surface of the front portion 2 to advance the open shield machine 1, and the second concrete box 8 is placed in front of the first concrete box 8. The second concrete box 8 is hung in the jack portion / tail portion 3. Hereinafter, the same excavation and setting process of the concrete box 8 are repeated, and the concrete boxes 8 are sequentially buried in the ground in a column, and backfilled with a dump truck 14 on the rear concrete box 8 to create an open shield machine. When 1 reaches the reaching pit 13, it is disassembled and removed to complete the construction. In the figure, 15 is a grout machine and 18 is a backfill injection material.

前記、オープンシールド機１の掘進はシールドジャッキ５を伸長するだけでなく、このシールドジャッキ５を固定して中折ジャッキ４の伸長でジャッキ部・テール部３に対してフロント部２を進めることでも行なわれ、シールドジャッキ５と中折ジャッキ４との２段階で押し進める。 The digging of the open shield machine 1 not only extends the shield jack 5, but also fixes the shield jack 5 and advances the front portion 2 with respect to the jack portion and the tail portion 3 by extending the middle folding jack 4. It is carried out and pushed forward in two stages of the shield jack 5 and the middle fold jack 4.

その際、中折ジャッキ４のうち、左右いずれかを多く伸長させればフロント部２はその反対側に向きを変え、その方向に曲がる。また、上下いずれかを多く伸長させればフロント部２はその反対側に向きを変え、上向きまたは下向きに曲がる。このようにしたカーブ施工または方向修正が可能である。 At that time, if either the left or right side of the middle-fold jack 4 is extended a lot, the front portion 2 turns to the opposite side and bends in that direction. Further, if either the upper or lower side is extended a lot, the front portion 2 turns to the opposite side and bends upward or downward. Curve construction or direction correction in this way is possible.

ところで、このようなオープンシールド工法によるコンクリート函体８の埋設は市街地の道路下で施工されることが多く、施工中は通行止めとなるが、一日のうちの一定の時間は道路を開放して通行可能状態とすることが望まれる。 By the way, the burial of the concrete box 8 by such an open shield method is often constructed under the road in the city area, and the road is closed during the construction, but the road is opened for a certain period of the day. It is desirable to make it passable.

このため、下記特許文献にも示すように、オープンシールド機１が発進坑から到達坑にまで到達する迄の間に、掘進を適宜中止し、オープンシールド機１の上部開口すなわち道路の開削した部分に覆工板を敷設して開口を一時的に閉塞し、この覆工板の上を自動車が走行し、また人が歩行できるようにしている。
特開２０００−６４７７７号公報 Therefore, as shown in the following patent documents, the excavation is appropriately stopped until the open shield machine 1 reaches from the starting pit to the reaching pit, and the upper opening of the open shield machine 1, that is, the excavated portion of the road. A lining plate is laid on the lining to temporarily close the opening so that automobiles can run on the lining plate and people can walk on it.
Japanese Unexamined Patent Publication No. 2000-64777

前記オープンシールド機１の上部は開口となる為、作業員、一般歩行者の転落防止柵を設ける必要がある。 Since the upper part of the open shield machine 1 is an opening, it is necessary to provide a fall prevention fence for workers and general pedestrians.

例えば、図２４、図２５に示すように、オープンシールド機１の左右の側壁板１ａ，１ｂの上端に直接手摺１６を立設するための手摺固定用のさや管１７を溶接等で取付ける。図中１９は挿入する手摺１６を固定するための止めボルトである。 For example, as shown in FIGS. 24 and 25, a handrail fixing sheath pipe 17 for directly erection of the handrail 16 is attached to the upper ends of the left and right side wall plates 1a and 1b of the open shield machine 1 by welding or the like. Reference numeral 19 in the figure is a set bolt for fixing the handrail 16 to be inserted.

しかし、オープンシールド機は現況地盤の高さにより、部材を重ね合わせ、シールド機高さを調整する必要がある為、部材上面は平滑で、重ね合わせ易い構造が一般的である。 However, since it is necessary to superimpose members and adjust the height of the shield machine depending on the height of the current ground in the open shield machine, the upper surface of the members is generally smooth and the structure is easy to superimpose.

また、重ね合わせを考慮した嵩上げ部材は上部部材の荷重に耐えうる構造とする必要がある為、構造が強固であり、部材重量が重く作業性が悪い。 Further, since the raising member in consideration of superposition needs to have a structure capable of withstanding the load of the upper member, the structure is strong, the weight of the member is heavy, and the workability is poor.

作業休止時の道路開放を必要とする計画においては、シールド機上に覆工板を設置する必要があり、その為にも最上段部材上面は平滑である必要がある。覆工板はオープンシールド機１の左右の側壁板１ａ，１ｂの上に載置されるので、それを邪魔するような部材を設けることはできない。 In a plan that requires road opening during work suspension, it is necessary to install a lining plate on the shield machine, and for that reason, the upper surface of the uppermost member needs to be smooth. Since the lining plate is placed on the left and right side wall plates 1a and 1b of the open shield machine 1, it is not possible to provide a member that interferes with the lining plate.

以上の理由により、シールド機の上部の平滑面に安全策となる手摺、または手摺固定用のさや管を設けることが困難であり、強いて行うとすれば溶接にて個別に固定する必要があるが、個々の取り外し、溶接固定作業には多大な作業時間を要する。 For the above reasons, it is difficult to provide a handrail or a sheath pipe for fixing the handrail on the smooth surface of the upper part of the shield machine as a safety measure, and if it is forced, it is necessary to fix it individually by welding. , Individual removal and welding fixing work requires a lot of work time.

本発明の目的は前記従来例の不都合を解消し、標準的に平滑であるシールド機部材上面に地上物がシールド機開口に転落しないように、幅木を有した防護柵設備を設置する必要がある場合に、幅木、防護柵を上段部材追加時、シールド機上覆工板設置時、上段積み重ね時については撤去可能なものとして設けることができるオープンシールド機を提供することにある。 An object of the present invention is to solve the inconvenience of the above-mentioned conventional example, and to install a protective fence facility having a skirting board on the upper surface of a shield machine member which is normally smooth so that a ground object does not fall into the shield machine opening. In some cases, it is an object of the present invention to provide an open shield machine in which skirting boards and protective fences can be provided as removable ones when an upper member is added, when a shield machine upper lining plate is installed, and when upper layers are stacked.

前記目的を達成するため請求項１記載の本発明は、水平方向に延びる横壁（フランジ）と横壁の一端から垂直方向へ延びる縦壁とを有するＬ型構造のアングル材を覆工板設置用の嵩上げ部材として、ボルト・ナットまたは溶接によりオープンシールド機の左右の側壁板の上端に取り外し可能で取付け、前記嵩上げ部材には手摺または手摺固定用のさや管を固定することを要旨とするものである。 In order to achieve the above object, the present invention according to claim 1 uses an L-shaped angle material having a horizontal wall (flange) extending in the horizontal direction and a vertical wall extending in the vertical direction from one end of the horizontal wall for installing a lining plate. As a raising member, it is detachably attached to the upper ends of the left and right side wall plates of the open shield machine by bolts, nuts or welding, and the gist is to fix a handrail or a pod for fixing the handrail to the raising member. ..

請求項１記載の本発明によれば、覆工板設置用の嵩上げ部材を設けることにより、覆工板をオープンシールド機開口に設置する際にこの嵩上げ部材で抑えるようにして位置決め等で容易に設置することができ、さらに、該オープンシールド機の左右の側壁板の上端に取り外し可能で取付けることで、必要に応じて設けることができ、しかもこの嵩上げ部材を利用して手摺または手摺固定用のさや管を固定することで転落防止柵としての手摺を簡単に設けることができる。 According to the first aspect of the present invention, by providing the raising member for installing the lining plate, when the lining plate is installed in the opening of the open shield machine, the raising member is used to hold the lining plate, and positioning or the like can be easily performed. It can be installed, and it can be installed as needed by detachably attaching it to the upper ends of the left and right side wall plates of the open shield machine, and it can be used for handrails or handrail fixing by using this raising member. By fixing the sheath pipe, a handrail as a fall prevention fence can be easily provided.

また、嵩上げ部材は、軽量な構造であるので、現況地盤高さとの調整が発生するのに作業性がよい。 Further, since the raising member has a lightweight structure, workability is good even if adjustment with the current ground height occurs.

請求項２記載の本発明は、嵩上げ部材はボルト孔部にザグリ加工を施し、皿ボルトにて横壁面からとび出すこと無く固定可能なことを要旨とするものである。 The gist of the present invention according to claim 2 is that the raised member is counterbored in the bolt hole portion and can be fixed by a countersunk bolt without protruding from the side wall surface.

請求項２記載の本発明によれば、嵩上げ部材はこれをボルト止めする場合にボルトがとび出すこと無く固定可能なものなので、覆工板設置するのにボルト・ナットが邪魔になるようなことはない。 According to the second aspect of the present invention, since the raising member can be fixed without the bolts popping out when bolting the raising member, the bolts and nuts do not interfere with the installation of the lining plate. There is no.

請求項３記載の本発明は、嵩上げ部材は横壁（フランジ）を上下２段からなる構造とし、オープンシールド機本体とのボルト接続部が横壁（フランジ）面上面に発生しない構造としたことを要旨とするものである。 The gist of the present invention according to claim 3 is that the raising member has a structure in which the side wall (flange) is composed of two upper and lower stages, and the bolt connection portion with the open shield machine main body is not generated on the upper surface of the side wall (flange) surface. It is to be.

請求項３記載の本発明によれば、通常のボルト・ナットを使用する場合でも、前記請求項２記載の本発明と同様にボルト接続部がフランジ面上面に発生しないようにすることでき、また、覆工板は上段のフランジ面に設置することができる。 According to the third aspect of the present invention, even when ordinary bolts and nuts are used, the bolt connection portion can be prevented from being generated on the upper surface of the flange surface as in the second aspect of the present invention. , The lining plate can be installed on the upper flange surface.

請求項４記載の本発明は、横壁を上下２段からなる構造とした嵩上げ部材は、上の段の横壁にもボルト・ナット孔部を形成し、ボルト・ナットで接続して上下に積み重ね可能としたことを要旨とするものである。 According to the fourth aspect of the present invention, the raised member having a structure in which the horizontal wall is composed of two upper and lower stages can be stacked vertically by forming bolts and nut holes in the horizontal wall of the upper stage and connecting them with bolts and nuts. The gist is that.

請求項４記載の本発明によれば、前記請求項３の作用に加えて、嵩上げ部材は、上の段の横壁にもボルト・ナット孔部を形成し、ボルト・ナットで接続して上下に積み重ね可能としたので必要に応じて嵩上げを高くすることができる。 According to the fourth aspect of the present invention, in addition to the action of the third aspect, the raising member also forms a bolt / nut hole on the side wall of the upper stage and is connected by the bolt / nut to move up and down. Since it can be stacked, it can be raised as needed.

請求項５記載の本発明は、上下２段の横壁の間に手摺固定用さや管部材を内蔵したことを要旨とするものである。 The gist of the present invention according to claim 5 is that a handrail fixing sheath and a pipe member are built in between the upper and lower two-tiered lateral walls.

請求項５記載の本発明によれば、嵩上げ部材に手摺固定用さや管部材を設けるのに、上下２段の横壁の間に収めることで邪魔にならないで設けることができる。 According to the fifth aspect of the present invention, the handrail fixing sheath and the pipe member can be provided on the raised member without being obstructed by being housed between the upper and lower two-tiered lateral walls.

以上述べたように本発明のオープンシールド機は、標準的に平滑であるシールド機部材上面に地上物がシールド機開口に転落しないように、幅木を有した防護柵設備を設置する必要がある場合に、幅木、防護柵を上段部材追加時、シールド機上覆工板設置時、上段積み重ね時については撤去可能なものとして設けることができるものである。 As described above, in the open shield machine of the present invention, it is necessary to install a protective fence facility having a skirting board on the upper surface of the shield machine member, which is normally smooth, so that ground objects do not fall into the shield machine opening. In this case, the skirting board and the guard fence can be provided as removable ones when the upper member is added, when the shield machine upper lining plate is installed, and when the upper tier is stacked.

本発明のオープンシールド機の第１実施形態を示す縦断側面図である。It is a longitudinal side view which shows 1st Embodiment of the open shield machine of this invention. 本発明のオープンシールド機の第１実施形態を示す平面図である。It is a top view which shows 1st Embodiment of the open shield machine of this invention. 図２のＡ−Ａ線矢視図である。It is a view of arrow AA of FIG. 本発明のオープンシールド機の第１実施形態を示す要部の拡大正面図である。It is an enlarged front view of the main part which shows 1st Embodiment of the open shield machine of this invention. 本発明のオープンシールド機の第２実施形態を示す要部の拡大正面図である。It is an enlarged front view of the main part which shows the 2nd Embodiment of the open shield machine of this invention. 本発明のオープンシールド機の第２実施形態を示す縦断側面図である。It is a longitudinal side view which shows the 2nd Embodiment of the open shield machine of this invention. 本発明のオープンシールド機の第３実施形態を示す要部の拡大正面図である。It is an enlarged front view of the main part which shows the 3rd Embodiment of the open shield machine of this invention. 嵩上げ部材の取付けの第１例を示す縦断正面図である。It is a vertical sectional front view which shows the 1st example of mounting of a raising member. 嵩上げ部材の取付けの第２例を示す縦断正面図である。It is a vertical sectional front view which shows the 2nd example of the attachment of the raising member. 嵩上げ部材の取付けの第３例を示す縦断正面図である。It is a vertical sectional front view which shows the 3rd example of the attachment of the raising member. 嵩上げ部材の取付けの第３例を示す平面図である。It is a top view which shows the 3rd example of attachment of a raising member. 嵩上げ部材の取付けの第４例を示す縦断正面図である。It is a vertical sectional front view which shows the 4th example of the attachment of the raising member. 嵩上げ部材の取付けの第４例を示す側面図である。It is a side view which shows the 4th example of attachment of a raising member. 嵩上げ部材の取付けの第５例を示す縦断正面図である。It is a vertical sectional front view which shows the 5th example of the attachment of the raising member. 嵩上げ部材の取付けの第５例を示す側面図である。It is a side view which shows the 5th example of attachment of a raising member. 嵩上げ部材の取付けの第５例を示す平面図である。It is a top view which shows the 5th example of the attachment of the raising member. 嵩上げ部材の正面図である。It is a front view of the raising member. 嵩上げ部材の取付けの第５例を示す積み重ね状態の縦断正面図である。It is a vertical sectional front view of the stacked state which shows the 5th example of the attachment of the raising member. 嵩上げ部材の取付けの第５例を示す縦断正面図である。It is a vertical sectional front view which shows the 5th example of the attachment of the raising member. 嵩上げ部材の取付けの第６例を示す縦断正面図である。It is a vertical sectional front view which shows the sixth example of attachment of a raising member. 嵩上げ部材の取付けの第６例を示す平面図である。It is a top view which shows the 6th example of the attachment of the raising member. オープンシールド機の従来例を示す縦断側面図である。It is a vertical sectional side view which shows the conventional example of an open shield machine. オープンシールド機の従来例を示す平面図である。It is a top view which shows the conventional example of the open shield machine. 図２３のＡ−Ａ線矢視図である。FIG. 23 is a view taken along the line AA of FIG. 23. 図２３のＡ−Ａ線矢視図の部分拡大図である。It is a partially enlarged view of the arrow view of line AA of FIG. 23. オープンシールド工法の第１工程を示す側面図である。It is a side view which shows the 1st process of the open shield method. オープンシールド工法の第２工程を示す側面図である。It is a side view which shows the 2nd process of the open shield method. オープンシールド工法の第３工程を示す側面図である。It is a side view which shows the 3rd process of the open shield method. オープンシールド工法の第４工程を示す側面図である。It is a side view which shows the 4th process of the open shield method.

以下、図面について本発明の実施の形態を詳細に説明する。図１は本発明のオープンシールド機の第１実施形態を示す縦断側面図、図２は同上平面図で、前記従来例を示す図１７、図１８と同一構成要素には同一参照符号を付したものである。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view showing a first embodiment of the open shield machine of the present invention, FIG. 2 is a plan view of the same as above, and the same components as those of FIGS. 17 and 18 showing the conventional example are designated by the same reference numerals. It is a thing.

オープンシールド機１は、左右の側壁板１ａ，１ｂとこれら側壁板１ａ，１ｂと同程度の長さでその間を連結する底板１ｃとからなる前面、後面及び上面を開口したシールド機である。 The open shield machine 1 is a shield machine having an open front surface, a rear surface, and an upper surface composed of left and right side wall plates 1a and 1b and a bottom plate 1c connecting the side wall plates 1a and 1b with the same length.

該オープンシールド機１は矩形機体を前後方向で複数に分割し、フロント部２としての前方の機体の後端にジャッキ部・テール部３としての後方の機体の前端が嵌入して、相互の嵌合部で屈曲可能とした。 The open shield machine 1 divides a rectangular body into a plurality of parts in the front-rear direction, and the front end of the rear body as a jack portion and the tail part 3 is fitted into the rear end of the front body as the front part 2 to fit each other. It can be bent at the joint.

フロント部２は主として掘削を行うもので、前端と上面を開放面としてあり、矩形機体内で後部に後方へ向けて中折ジャッキ４を左右によせて、また上下複数段に配設している。 The front portion 2 is mainly used for excavation, and the front end and the upper surface are open surfaces, and the middle fold jacks 4 are arranged in a plurality of upper and lower stages in a rectangular machine body with the middle fold jacks 4 facing rearward toward the rear. ..

これに対してジャッキ部・テール部３はコンクリート函体８の設置を行うもので、ジャッキ部では機体内で前部に後方へ向けてシールドジャッキ５を左右によせて、また上下複数段に配設している。図中６はフロント部２の前端に設けたスライド土留め（可動分割刃口）、７は上面を開放面で側壁板１ａ，１ｂにかけ渡す梁部材、１０はプレスバー（押角）である。 On the other hand, the jack portion and the tail portion 3 are used to install the concrete box 8, and in the jack portion, the shield jack 5 is placed on the left and right sides toward the front and rear in the machine body, and is arranged in multiple stages above and below. It is set up. In the figure, 6 is a slide earth retaining device (movable split cutting edge) provided at the front end of the front portion 2, 7 is a beam member whose upper surface is an open surface and extends over the side wall plates 1a and 1b, and 10 is a press bar (push angle).

本発明のオープンシールド機１は覆工板設置用の嵩上げ部材２０として、水平方向に延びる横壁２１と横壁の一端から垂直方向へ延びる縦壁２２とを有するＬ型構造のアングル材をボルト・ナット２３または溶接２４によりオープンシールド機１の左右の側壁板１ａ，１ｂの上端に取り外し可能に取り付けた。 The open shield machine 1 of the present invention bolts and nuts an L-shaped angle member having a horizontal wall 21 extending in the horizontal direction and a vertical wall 22 extending in the vertical direction from one end of the horizontal wall as a raising member 20 for installing a lining plate. It was detachably attached to the upper ends of the left and right side wall plates 1a and 1b of the open shield machine 1 by 23 or welding 24.

嵩上げ部材２０はオープンシールド機１の長さ方向に沿って設けられる。 The raising member 20 is provided along the length direction of the open shield machine 1.

図８はその詳細を示すもので、オープンシールド機１の左右の側壁板１ａ，１ｂの上端には内側に向けてフランジ２６を形成し、嵩上げ部材２０の横壁２１をこのフランジ２６の上に重合し、相互のボルト・ナット孔部２５に通常のボルト・ナット２３を通して締結した。この場合はボルト頭部が横壁２１の上に露出する。 FIG. 8 shows the details. A flange 26 is formed inward at the upper ends of the left and right side wall plates 1a and 1b of the open shield machine 1, and the lateral wall 21 of the raising member 20 is polymerized on the flange 26. Then, the normal bolts and nuts 23 were passed through the mutual bolt and nut holes 25 and fastened. In this case, the bolt head is exposed on the side wall 21.

図９は変形例を示し、ボルト・ナット孔部２５の上端にザグリ加工を施し、ボルト・ナット２３のボルトには皿ボルトを使用して、横壁２１の面からとび出すこと無く固定可能なものとした。 FIG. 9 shows a modified example in which the upper end of the bolt / nut hole 25 is counterbored, and the bolt of the bolt / nut 23 is a countersunk bolt, which can be fixed without protruding from the surface of the side wall 21. And said.

図１０、図１１は溶接２４の場合で、スポット的に溶接することで、嵩上げ部材２０を取り外し可能に取り付ける。嵩上げ部材２０の取り外し時は溶接２４の箇所は切断する。 10 and 11 show the case of welding 24, and the raising member 20 is detachably attached by welding in a spot manner. When removing the raising member 20, the portion of the weld 24 is cut.

さらに、他の変形例として図１２、図１３に示すように、嵩上げ部材２０は横壁２１を上下２段からなる構造とし、ボルト・ナット孔部２５に通常のボルト・ナット２３を相通する場合でもボルトの頭部は横壁２１、２１間に収まり、オープンシールド機本体とのボルト・ナット接続部が横壁上面に発生しない構造とした。 Further, as another modification, as shown in FIGS. 12 and 13, the raising member 20 has a structure in which the side wall 21 has two upper and lower stages, and even when a normal bolt / nut 23 is passed through the bolt / nut hole 25. The head of the bolt fits between the side walls 21 and 21, and the bolt / nut connection with the open shield machine body is not generated on the upper surface of the side wall.

図１４〜図１８はこの図１２、図１３に示す例の更なる応用例を示すもので、前記嵩上げ部材２０は横壁２１を上下２段からなる構造とするとともに、この上下の横壁２１を立壁３３で連結してＣ型のチャンネル部材３４とし、上段の横壁２１にもボルト・ナット孔部２５を形成し、また、立壁３３の外側に垂直方向へ延びる縦壁２２を取り付けた。 14 to 18 show further application examples of the examples shown in FIGS. 12 and 13. The raising member 20 has a structure in which the horizontal wall 21 is composed of two upper and lower stages, and the upper and lower horizontal walls 21 are vertical walls. A C-shaped channel member 34 was formed by connecting with 33, a bolt / nut hole 25 was also formed in the upper horizontal wall 21, and a vertical wall 22 extending in the vertical direction was attached to the outside of the vertical wall 33.

前記縦壁２２を取り付けたチャンネル部材３４は図１８に示すように上下に積み重ね可能であり、積み重ねてボルト・ナット２３で固定する。 The channel member 34 to which the vertical wall 22 is attached can be stacked up and down as shown in FIG. 18, and is stacked and fixed with bolts and nuts 23.

また、前記の嵩上げ部材２０の例は、水平方向に延びる横壁２１と横壁の一端から垂直方向へ延びる縦壁２２とは２部材を接合することによりＬ型構造のアングル材としたが、図１９に示すように、横壁２１と縦壁２２とは一体として成形した形鋼を用いることもできる。 Further, in the above-mentioned example of the raising member 20, the horizontal wall 21 extending in the horizontal direction and the vertical wall 22 extending in the vertical direction from one end of the horizontal wall are joined to form an angle member having an L-shaped structure. As shown in the above, the shaped steel formed by integrally forming the horizontal wall 21 and the vertical wall 22 can also be used.

図２０、図２１は更なる変形例を示すもので、ボルト・ナット孔部２５はこれを直接嵩上げ部材２０に設けるのではなく、嵩上げ部材２０に並行に固定用のフランジ部２７を設け、ここに形成することとした。 20 and 21 show further modified examples. The bolt / nut hole portion 25 is not provided directly on the raising member 20, but is provided with a flange portion 27 for fixing in parallel with the raising member 20. It was decided to form in.

前記嵩上げ部材２０はこれを覆工板２８をオープンシールド機１の開口に設置する際の受け金具として用いることができ、嵩上げ部材２０を取り付けたオープンシールド機１の左右の側壁板１ａ，１ｂの上端に間に覆工板２８を設置する（図７参照）。 The raising member 20 can be used as a receiving metal fitting when the lining plate 28 is installed in the opening of the open shield machine 1, and the left and right side wall plates 1a and 1b of the open shield machine 1 to which the raising member 20 is attached can be used. A lining plate 28 is installed between the upper ends (see FIG. 7).

このように覆工板２８を設置しない場合にはオープンシールド機１の上面は開口となるので、嵩上げ部材２０に手摺１６または手摺１６を立設するための手摺固定用のさや管１７を固定して転落防止を図るようにする。 When the lining plate 28 is not installed in this way, the upper surface of the open shield machine 1 becomes an opening, so the handrail 16 or the handrail fixing sheath pipe 17 for erecting the handrail 16 is fixed to the raising member 20. To prevent falling.

この手摺１６または手摺固定用のさや管１７の固定方法は種々選択できその一例として、図３、図４に示すように、手摺固定用のさや管１７の下側にクランプ２９を設けて、これで嵩上げ部材２０の縦壁２２に締結する。嵩上げ部材２０の縦壁２２は手摺１６を設ける場合の幅木となる。 Various methods for fixing the handrail 16 or the handrail fixing sheath tube 17 can be selected. As an example thereof, as shown in FIGS. 3 and 4, a clamp 29 is provided under the handrail fixing sheath tube 17 to provide the clamp 29. It is fastened to the vertical wall 22 of the raising member 20. The vertical wall 22 of the raising member 20 serves as a skirting board when the handrail 16 is provided.

このようにすれば、覆工板２８を設置する場合は、手摺固定用のさや管１７および手摺１６は嵩上げ部材２０から取り外しておくことができる。 In this way, when the lining plate 28 is installed, the handrail fixing sheath pipe 17 and the handrail 16 can be removed from the raising member 20.

他の例として図７に示すように、手摺固定用のさや管１７は嵩上げ部材２０の縦壁２２の外側に設けてもよい。 As another example, as shown in FIG. 7, the sheath pipe 17 for fixing the handrail may be provided outside the vertical wall 22 of the raising member 20.

手摺固定用のさや管１７は嵩上げ部材２０を取り付けたオープンシールド機１の左右の側壁板１ａ，１ｂの上端に間に覆工板２８を設置するのに邪魔になることはない。 The sheath pipe 17 for fixing the handrail does not interfere with the installation of the lining plate 28 between the upper ends of the left and right side wall plates 1a and 1b of the open shield machine 1 to which the raising member 20 is attached.

さらに他の例として、前記のように嵩上げ部材２０は横壁２１を上下２段からなる構造とした場合に図５に示すように上下段の横壁２１の間に手摺固定用のさや管１７を内蔵させて設けるようにしてもよい。 As yet another example, when the raising member 20 has a structure in which the horizontal wall 21 is composed of two upper and lower stages as described above, a sheath pipe 17 for fixing a handrail is built in between the upper and lower horizontal walls 21 as shown in FIG. It may be provided.

この場合は手摺固定用のさや管１７の直上の上段の横壁２１には手摺挿入用の孔３２を設ける。 In this case, a hole 32 for inserting the handrail is provided in the horizontal wall 21 on the upper stage directly above the sheath pipe 17 for fixing the handrail.

また、前記のようにボルト・ナット２３の頭部を横壁２１、２１間に収めた場合には、このボルト頭部を手摺固定用のさや管１７の中に取り込んでもよいし、また、手摺固定用のさや管１７とは位置をずらしてもよい。 Further, when the head of the bolt / nut 23 is accommodated between the side walls 21 and 21 as described above, the bolt head may be incorporated into the sheath pipe 17 for fixing the handrail, or the head of the bolt / nut 23 may be fixed in the handrail. The position may be shifted from that of the sheath tube 17.

覆工板２８を設置する場合は、手摺１６は取り付けず、上段の横壁２１でこれを受けるようにする。 When installing the lining plate 28, the handrail 16 is not attached, and the handrail 16 is received by the upper horizontal wall 21.

１…オープンシールド機
１ａ，１ｂ…側壁板 １ｃ…底板
２…フロント部 ３…ジャッキ部・テール部
４…中折ジャッキ ５…シールドジャッキ
６…可動分割刃口 ７…梁部材
８…コンクリート函体
１０…プレスバー １１…発進坑
１２…掘削機 １３…到達坑
１４…ダンプ １５…グラウト機
１６…手摺 １７…手摺固定用のさや管
１８…裏込注入材 １９…止めボルト
２０…嵩上げ部材 ２１…横壁
２２…縦壁 ２３…ボルト・ナット
２４…溶接 ２５…ボルト・ナット孔部
２６…フランジ ２７…フランジ部
２８…覆工板 ２９…クランプ
３２…手摺挿入用の孔 ３３…縦壁
３４…チャンネル部材
1 ... Open shield machine 1a, 1b ... Side wall plate 1c ... Bottom plate 2 ... Front part 3 ... Jack part / tail part 4 ... Middle fold jack 5 ... Shield jack 6 ... Movable split cutting edge 7 ... Beam member 8 ... Concrete box 10 ... Press bar 11 ... Starting pit 12 ... Excavator 13 ... Reaching pit 14 ... Dump 15 ... Grout machine 16 ... Handrail 17 ... Handrail fixing sheath tube 18 ... Backfill injection material 19 ... Stop bolt 20 ... Raising member 21 ... Side wall 22 ... Vertical wall 23 ... Bolt / nut 24 ... Welding 25 ... Bolt / nut hole 26 ... Flange 27 ... Flange 28 ... Lining plate 29 ... Clamp 32 ... Hole for inserting handrail 33 ... Vertical wall 34 ... Channel member

Claims (5)

水平方向に延びる横壁と横壁の一端から垂直方向へ延びる縦壁とを有するＬ型構造のアングル材を覆工板設置用の嵩上げ部材として、ボルト・ナットまたは溶接によりオープンシールド機の左右の側壁板の上端に取り外し可能で取付け、前記嵩上げ部材には手摺または手摺固定用のさや管を固定することを特徴とするオープンシールド機。 Left and right side wall plates of an open shield machine by bolts, nuts or welding, using an L-shaped angle material having a horizontal wall extending in the horizontal direction and a vertical wall extending in the vertical direction from one end of the horizontal wall as a raising member for installing the lining plate. An open shield machine that is removable and attached to the upper end of the handrail, and a handrail or a sheath tube for fixing the handrail is fixed to the raised member. 嵩上げ部材はボルト・ナット孔部にザグリ加工を施し、皿ボルト・ナットにて横壁面からとび出すこと無く固定可能な請求項１記載のオープンシールド機。 The open shield machine according to claim 1, wherein the raising member has a counterbore processing on the bolt / nut hole and can be fixed with a countersunk bolt / nut without protruding from the side wall surface. 嵩上げ部材は横壁を上下２段からなる構造とし、オープンシールド機本体とのボルト・ナット接続部が横壁上面に発生しない構造とした請求項１または請求項２記載のオープンシールド機。 The open shield machine according to claim 1 or 2, wherein the raising member has a structure in which the side wall is composed of two upper and lower stages, and the bolt / nut connection portion with the main body of the open shield machine is not generated on the upper surface of the side wall. 横壁を上下２段からなる構造とした嵩上げ部材は、上の段の横壁にもボルト・ナット孔部を形成し、ボルト・ナットで接続して上下に積み重ね可能とした請求項３記載のオープンシールド機。 The open shield according to claim 3, wherein the raising member having a structure in which the side wall is composed of two upper and lower stages has bolts and nut holes formed in the horizontal wall of the upper stage, and can be connected by bolts and nuts and stacked vertically. Machine. 上下２段の横壁の間に手摺固定用さや管部材を内蔵した請求項３または請求項４に記載のオープンシールド機。 The open shield machine according to claim 3 or 4, wherein a handrail fixing sheath and a pipe member are built between the upper and lower two-stage horizontal walls.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2022054730A1 (en) 2020-09-11 2022-03-17 日本精工株式会社 Resin-made cage for ball bearing and ball bearing
JP2023017220A (en) * 2021-07-26 2023-02-07 誠 植村 open shield machine

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JP7405912B1 (en) 2022-07-01 2023-12-26 誠 植村 Bottom widening repair method of existing fenced channel

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JPH03137320A (en) * 1989-10-19 1991-06-11 Koichi Uemura Open shield construction method
JP3045967U (en) * 1997-08-05 1998-02-20 丸藤シートパイル株式会社 Connecting structure of lining plate
JPH11350888A (en) * 1998-04-10 1999-12-21 Tokyo Fabric Kogyo Kk Connection device and method for casing unit, and connection structure thereof
KR100929440B1 (en) * 2009-06-11 2009-12-03 (주)한라스틸엔테크 The structure of covering construction of the road surface and the processing method of that
JP2016014297A (en) * 2014-07-03 2016-01-28 株式会社大盛工業 Road surface lining method

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JPH03137320A (en) * 1989-10-19 1991-06-11 Koichi Uemura Open shield construction method
JP3045967U (en) * 1997-08-05 1998-02-20 丸藤シートパイル株式会社 Connecting structure of lining plate
JPH11350888A (en) * 1998-04-10 1999-12-21 Tokyo Fabric Kogyo Kk Connection device and method for casing unit, and connection structure thereof
KR100929440B1 (en) * 2009-06-11 2009-12-03 (주)한라스틸엔테크 The structure of covering construction of the road surface and the processing method of that
JP2016014297A (en) * 2014-07-03 2016-01-28 株式会社大盛工業 Road surface lining method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022054730A1 (en) 2020-09-11 2022-03-17 日本精工株式会社 Resin-made cage for ball bearing and ball bearing
JP2023017220A (en) * 2021-07-26 2023-02-07 誠 植村 open shield machine
JP7264948B2 (en) 2021-07-26 2023-04-25 誠 植村 open shield machine

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