JPH0535197Y2 - - Google Patents
Info
- Publication number
- JPH0535197Y2 JPH0535197Y2 JP1988072211U JP7221188U JPH0535197Y2 JP H0535197 Y2 JPH0535197 Y2 JP H0535197Y2 JP 1988072211 U JP1988072211 U JP 1988072211U JP 7221188 U JP7221188 U JP 7221188U JP H0535197 Y2 JPH0535197 Y2 JP H0535197Y2
- Authority
- JP
- Japan
- Prior art keywords
- shield machine
- side wall
- underground structure
- bottom plate
- wall plates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、市街地に上下水道、共同溝、電信、
電話等の布設地下道等の地下構造物を旋工するオ
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。[Detailed explanation of the invention] [Industrial application field] This invention is designed to provide water and sewage systems, public drains, telegraph lines,
This invention relates to an open shield machine used in the open shield construction method for turning underground structures such as underground passages for laying telephones, etc.
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。
The open shield construction method is a highly rational construction method that takes advantage of the advantages of the cut-and-cover construction method (open construction method) and the shield construction method.
第3図〜第5図にその概略を示すと、図中1は
オープンシールド機で、これは左右の側壁板1
a,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U型シールド機である。
該オープンシールド機1は前記側壁1a,1bと
底板1cの先端を断面三角匣状の刃口2として形
成し、また側壁板1a,1bの中央又は後端近く
に推進ジヤツキ3を後方に向け上下に並べて配設
する。 The outline is shown in Figures 3 to 5. In the figure, 1 is an open shield machine, and this is the left and right side wall plate 1.
a, 1b and a bottom plate 1c having the same length as the side wall plates 1a, 1b and connecting them;
It is a U-shaped shield machine with openings on the rear and top sides.
The open shield machine 1 has the tips of the side walls 1a, 1b and the bottom plate 1c formed as a cutting edge 2 having a triangular box shape in cross section, and a propulsion jack 3 is placed rearward at the center or near the rear end of the side walls 1a, 1b to move up and down. Arrange them side by side.
図中7は、推進ジヤツキ3の後端に設けた受圧
部材で、ボツクス鋼材又は型鋼を用いた。 7 in the figure is a pressure receiving member provided at the rear end of the propulsion jack 3, which is made of box steel or shaped steel.
発進抗6内にこのシールド機1を設置して、シ
ールド機1の前面又は上面開口より発進抗6の前
方の土砂を掘削し、かつ排土する。そして、シー
ルド機1の推進ジヤツキ3を伸長して発進抗6内
の反力壁に反力をとつてシールド機1を前進さ
せ、コンクリート函体等による第1番目の地中構
造物4を上方から吊り降し、シールド機1のテー
ル部1d内で縮めた推進ジヤツキ3の後方にセツ
トする。 This shield machine 1 is installed inside the starting shaft 6, and the earth and sand in front of the starting shaft 6 is excavated and removed from the front or top opening of the shield machine 1. Then, the propulsion jack 3 of the shield machine 1 is extended to apply a reaction force to the reaction wall in the starting shaft 6 to move the shield machine 1 forward, moving the first underground structure 4 made of a concrete box or the like upward. It is suspended from the shield machine 1 and set behind the propulsion jack 3 which is retracted within the tail section 1d of the shield machine 1.
次いで、同様にシールド機1の前面又は上面か
ら土砂を掘削しかつ排土してシールド機1を前進
させ、前記第1番目の地中構造物4の前に第2番
目の地中構造物4をシールド機1のテール部1d
内に吊り降す。以下、同様の掘進及び地中構造物
4のセツト工程を繰返して、順次地中構造物4を
縦列に地中に埋設し、第5図に示すように後方の
地中構造物4上に埋戻し5を施し、図示は省略す
るがオープンシールド機1が到達抗まで達したな
らばこれを撤去して工事を完了する。 Next, earth and sand are similarly excavated and discharged from the front or upper surface of the shield machine 1, and the shield machine 1 is moved forward, and a second underground structure 4 is placed in front of the first underground structure 4. Tail part 1d of shield machine 1
hang inside. Thereafter, the same excavation and setting process of the underground structures 4 is repeated to sequentially bury the underground structures 4 in the ground in columns, and as shown in FIG. After the return step 5 is applied, and although not shown in the drawings, once the open shield machine 1 has reached the final shaft, it is removed and the construction is completed.
前記従来のオープンシールド機1では、地中構
造物4のコンクリート函体は地上からオープンシ
ールド機1のテール部1dで底板1c上に吊り降
ろされ、該シールド機1の前進により地中に残さ
れていくものである。従つて、底板1cの厚さ分
だけ落差を生じ、そのために地中構造物4の底面
下の均しが困難となる。
In the conventional open shield machine 1, the concrete box of the underground structure 4 is suspended from the ground onto the bottom plate 1c by the tail part 1d of the open shield machine 1, and is left underground as the shield machine 1 moves forward. It's something to do. Therefore, a head difference is generated by the thickness of the bottom plate 1c, which makes it difficult to level the bottom surface of the underground structure 4.
さらに、オープンシールド機1側からすれば、
このように地中構造物4を後方に置き去りにしな
がら底板1cを該地中構造物4の下面から抜き取
りながら前進するので摩擦抵抗が生じ、その分だ
け推進ジヤツキ3に対しての負荷が大きい。 Furthermore, from the open shield machine 1 side,
In this way, since the underground structure 4 is left behind and the bottom plate 1c is removed from the underside of the underground structure 4 while moving forward, frictional resistance is generated, and the load on the propulsion jack 3 is correspondingly large.
また、オープンシールド機1が前進する際に蛇
行、いわゆるローリング現象を生じると、底板1
c上に置かれた地中構造物4も同じように曲がる
ので、後方に配置されている既設の地中構造物4
との接続にずれが生じ、さらにこれらを反力とし
ての推進ジヤツキ3によるシールド機1の前進作
用も不完全なものとなる。 In addition, if meandering, a so-called rolling phenomenon occurs when the open shield machine 1 moves forward, the bottom plate 1
Since the underground structure 4 placed above c bends in the same way, the existing underground structure 4 placed at the rear
A displacement occurs in the connection with the shield machine 1, and furthermore, the forward movement of the shield machine 1 by the propulsion jack 3 using these forces as a reaction force becomes incomplete.
本考案の目的は前記従来例の不都合を解消し、
推進もスムーズにでき、またシールド機内に吊り
降ろす地中構造物下の均しも簡単に行え、かつシ
ールド機1のローリングの影響も受けにくく、正
確に地中構造物を縦列させていくことができるオ
ープンシールド機を提供することにある。 The purpose of the present invention is to eliminate the disadvantages of the conventional example,
Propulsion is smooth, and the area under the underground structures suspended into the shield machine can be easily leveled, and it is less affected by the rolling of the shield machine 1, making it possible to precisely align the underground structures in tandem. Our goal is to provide an open shield machine that can.
[課題を解決するための手段〕
本考案は前記目的を達成するため、左右側壁板
と底板とを有し、前面、後面及び上面が開口した
断面U字型のオープンシールド機において、側壁
板はその前半部分は二重壁構造として厚みを持た
せ、後半部分テール部は1枚物として、内側の間
隔をより広く確保できるようにし、また、このシ
ールド機のテール部内下面は底板なしの開口と
し、さらに、側壁板テール部内側に沿つて板状の
受圧部材を取付けたことを要旨とするものであ
る。[Means for Solving the Problems] In order to achieve the above object, the present invention provides an open shield machine having a U-shaped cross section with left and right side wall plates and a bottom plate, and openings on the front, rear and top surfaces, in which the side wall plates are The first half has a double-walled structure and is thicker, and the tail section of the second half is made of one piece to ensure a wider space inside.In addition, the inner lower surface of the tail of this shield machine is an opening without a bottom plate. Furthermore, the gist is that a plate-shaped pressure receiving member is attached along the inner side of the tail portion of the side wall plate.
本考案によれば、オープンシールド機はテール
部内において底板がなく、側壁板のみを平行に有
するものである。オープンシールド機は推進ジヤ
ツキの伸長で地中構造物を反力として前進する。
前進後、オープンシールド機テール部に新たな地
中構造物を吊り降ろす場合に、底板がなく地盤が
露出しているのでこれを簡単に均し、適正位置に
地中構造物をセツトできる。
According to the present invention, the open shield machine has no bottom plate in the tail portion, and only has parallel side wall plates. The open shield aircraft moves forward using the underground structure as a reaction force due to the extension of the propulsion jack.
After moving forward, when a new underground structure is to be lowered from the tail section of the open shield machine, since there is no bottom plate and the ground is exposed, it can be easily leveled and the underground structure set in the proper position.
また、吊り降ろす地中構造物は直接地盤上に置
かれるので、シールド機との接合はなく、シール
ド機との摩擦抵抗も少ないし、さらにシールド機
の影響も受けにくい。 In addition, since the underground structure to be suspended is placed directly on the ground, there is no connection with the shield machine, so there is little frictional resistance with the shield machine, and it is also less susceptible to the effects of the shield machine.
さらに、シールド機のテール部内の受圧部材が
地中構造物の側部に当接するので、土圧を受けて
も大きく内側へ変形することが防げる。 Furthermore, since the pressure receiving member in the tail portion of the shield machine comes into contact with the side of the underground structure, it is possible to prevent it from deforming significantly inward even if it receives earth pressure.
以下、図面について本考案の実施例を詳細に説
明する。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第1図は本考案のオープンシールド機の1実施
例を示す縦断側面図、第2図は同上横断平面図で
ある。 FIG. 1 is a longitudinal side view showing one embodiment of the open shield machine of the present invention, and FIG. 2 is a cross-sectional plan view of the same.
本考案のオープンシールド機1は、左右の側壁
板1a,1bについては前記従来と同じで、その
先端を断面三角匣状の刃口2として形成した。 In the open shield machine 1 of the present invention, the left and right side wall plates 1a and 1b are the same as those of the conventional type, and their tips are formed as a cutting edge 2 having a triangular box shape in cross section.
これら側壁板1aと1bの下端同士を底板1c
で連結し、またその上方を梁部材8で連結して前
面、後面と上面を開口したものとするが、該底板
1cはシールド機1のテール部1dには延設せ
ず、該テール部1dの下面は開口とする。 The lower ends of these side wall plates 1a and 1b are connected to the bottom plate 1c.
The bottom plate 1c does not extend to the tail portion 1d of the shield machine 1, and the upper portion thereof is connected by a beam member 8 to open the front, rear and upper surfaces. The bottom side of the box shall be an opening.
なお、本実施例では側壁板1a,1bはその前
半部分は二重壁構造として厚みを持たせ、後半部
分テール部1dは1枚物として、内側の間隔をよ
り広く確保できるようにした。図中、9は側壁板
1a,1bの内側で縦方向に添設する補強部材
で、これは前記梁部材8と連結して補強枠を形成
する。さらに、梁部材8同士をブレース材10で
連結して強度を高めてもよい。 In the present embodiment, the front half of the side wall plates 1a and 1b has a double wall structure and is thick, and the tail portion 1d of the rear half is made of one piece so that a wider inner space can be secured. In the figure, reference numeral 9 denotes a reinforcing member attached vertically inside the side wall plates 1a, 1b, which is connected to the beam member 8 to form a reinforcing frame. Furthermore, the beam members 8 may be connected to each other by a brace member 10 to increase the strength.
また、側壁板1a,1bの内側で前後の中間位
置に推進ジヤツキ3を後方に向け上下に並べて配
設し、その後端にはボツクス鋼材又は型鋼を用い
る支柱状の受圧部材7を取付けた。 In addition, propulsion jacks 3 are arranged vertically and facing rearward at intermediate positions between the front and back inside the side wall plates 1a and 1b, and a column-shaped pressure receiving member 7 made of box steel or shaped steel is attached to the rear end.
以上の構成に加えて側壁板1a,1bの内側後
部、すなわちテール部1dに沿つて、厚手のゴム
板や鋼板、若しくは木板からなる板状の受圧部材
11を取付ける。 In addition to the above configuration, a plate-shaped pressure receiving member 11 made of a thick rubber plate, steel plate, or wood plate is attached to the inner rear portions of the side wall plates 1a and 1b, that is, along the tail portions 1d.
次に、使用法について説明するが、これを用い
たオープンシールド工法の概略については前記従
来例と同様であるのでその詳細は省略する。 Next, the method of use will be explained, but since the outline of the open shield method using this method is the same as that of the conventional example, the details will be omitted.
シールド機1の前面又は上面の開口から土砂を
掘削し、かつ排土し、推進ジヤツキ3を伸長して
既設の地中構造物4を反力としてシールド機1を
前進させる。 Earth and sand is excavated and discharged from the front or upper opening of the shield machine 1, and the propulsion jack 3 is extended to advance the shield machine 1 using the existing underground structure 4 as a reaction force.
次いで、推進ジヤツキ3を縮め、受圧部材7を
前に移動させて、既設の地中構造物4の前端との
間に空隙を確保する。 Next, the propulsion jack 3 is retracted, the pressure receiving member 7 is moved forward, and a gap is secured between it and the front end of the existing underground structure 4.
地上から新たな地中構造物4をシールド機1の
テール部1d内に吊り降ろし、これを既設の地中
構造物4の前端に接続するようにセツトするが、
前記のごとくシールド機1のテール部1dでは底
板がないので直接地盤上に置かれる。 A new underground structure 4 is lowered from the ground into the tail section 1d of the shield machine 1, and it is set to connect to the front end of the existing underground structure 4.
As mentioned above, the tail portion 1d of the shield machine 1 does not have a bottom plate, so it is placed directly on the ground.
その際、シールド機1のテール部内の地盤上の
土砂を均すことにより吊り降ろす地中構造物4を
適正位置に簡単に設置できる。 At this time, the underground structure 4 to be suspended can be easily installed at an appropriate position by leveling the earth and sand on the ground within the tail portion of the shield machine 1.
このようにしてから推進ジヤツキ3を伸長し、
シールド機1を前進させ、以下同様の工程を繰返
しながら地中構造物4を縦列に地中に埋設し、ま
た第7図にも示したように後方の地中構造物4上
に埋戻し5を施す。 After doing this, extend the propulsion jack 3,
The shield machine 1 is moved forward, and the underground structures 4 are buried vertically in the ground while repeating the same process, and as shown in FIG. administer.
ところで、シールド機1のテール部1dは前記
のごとく地上から地中構造物4を吊り降ろすため
に、この部分の側壁板1a,1bを梁部材で連結
することができない。 By the way, since the tail section 1d of the shield machine 1 suspends the underground structure 4 from the ground as described above, it is not possible to connect the side wall plates 1a and 1b of this section with a beam member.
従つて、側壁板1a,1bが土圧を受けて該テ
ール部1dで内側にたわむおそれがある。 Therefore, there is a possibility that the side wall plates 1a, 1b may bend inward at the tail portion 1d due to earth pressure.
そして、テール部1dの側壁板1a,1bの内
側に受圧部材11が設けられており、前記のごと
く内側にたわんだ際にこの受け圧部材11が地中
構造物4の側面に当接してシールド機1の大きな
変形を防止する。 A pressure receiving member 11 is provided inside the side wall plates 1a and 1b of the tail portion 1d, and when bent inward as described above, this pressure receiving member 11 comes into contact with the side surface of the underground structure 4 and shields it. Prevent large deformation of machine 1.
また、このようにして地中構造物4に当接する
受圧部材11は地中構造物4の周囲に充填するグ
ラウト材がシールド機1側に流出しないようにす
る仕切り部材としても作用する。 Further, the pressure receiving member 11 that comes into contact with the underground structure 4 in this manner also acts as a partition member that prevents the grout material filled around the underground structure 4 from flowing out to the shield machine 1 side.
以上述べたような本考案のオープンシールド機
は、地中構造物をシールド機のテール部内に吊り
降ろすのに該テール部内の地盤を均すことで簡単
に適正位置にセツトできるものである。
In the open shield machine of the present invention as described above, when an underground structure is suspended into the tail part of the shield machine, it can be easily set in the proper position by leveling the ground within the tail part.
さらに、吊り降ろした地中構造物はシールド機
のローリングの影響も受けにくく、一方、シール
ド機は地中構造物を載置してこれを残しながら底
板を抜き取るように前進することもないので、前
進時の抵抗が少なく、スムーズに移動できるもの
となる。 Furthermore, the suspended underground structure is less susceptible to the rolling effects of the shield machine, and on the other hand, the shield machine does not move forward to remove the bottom plate while placing the underground structure and leaving it behind. There is less resistance when moving forward, allowing smooth movement.
これに加えて、シールド機のテール部内の受圧
部材が地中構造物の側部に当接するので、土圧を
受けても大きく内側へ変形することが防げるもの
である。 In addition, since the pressure-receiving member in the tail portion of the shield machine comes into contact with the side of the underground structure, it is possible to prevent it from deforming significantly inward even if it receives earth pressure.
第1図は本考案のオープンシールド機の1実施
例を示す縦断側面図、第2図は同上横断平面図、
第3図は従来例を示す縦断側面図、第4図は第3
図のA−A線断面図、第5図はオープンシールド
工法の説明図である。
1……オープンシールド機、1a,1b……側
壁板、1c……底板、1d……テール部、2……
刃口、3……推進ジヤツキ、4……地中構造物、
5……埋戻し、6……発進抗、7……受圧部材、
8……梁部材、9……補強部材、10……ブレー
ス材、11……受圧部材。
Fig. 1 is a vertical cross-sectional side view showing one embodiment of the open shield machine of the present invention, Fig. 2 is a cross-sectional plan view of the same;
Figure 3 is a longitudinal cross-sectional side view showing the conventional example, and Figure 4 is the third
The sectional view taken along the line A-A in the figure and FIG. 5 are explanatory diagrams of the open shield construction method. 1...Open shield machine, 1a, 1b...Side wall plate, 1c...Bottom plate, 1d...Tail part, 2...
Blade mouth, 3... Propulsion jack, 4... Underground structure,
5...Backfilling, 6...Starting resistance, 7...Pressure receiving member,
8...Beam member, 9...Reinforcement member, 10...Brace material, 11...Pressure receiving member.
Claims (1)
前面、後面及び上面が開口した断面U字型のオー
プンシールド1機において、側壁板1a,1bは
その前半部分は二重壁構造として厚みを持たせ、
後半部分テール部1dは1枚物として、内側の間
隔をより広く確保できるようにし、また、このシ
ールド機1のテール部1d内の下面は底板なしの
開口とし、さらに、側壁板1a,1bのテール部
1dの内側に沿つて板状の受圧部材11を取付け
たことを特徴とするのオープンシールド機。 It has left and right side wall plates 1a, 1b and a bottom plate 1c,
In one open shield with a U-shaped cross section with openings on the front, rear, and top surfaces, the side wall plates 1a and 1b have a thick double wall structure in the front half,
The rear half tail part 1d is made as a single piece so that a wider inner space can be secured, and the lower surface of the tail part 1d of this shield machine 1 is an opening without a bottom plate, and the side wall plates 1a and 1b are This open shield machine is characterized in that a plate-shaped pressure receiving member 11 is attached along the inside of the tail portion 1d.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988072211U JPH0535197Y2 (en) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988072211U JPH0535197Y2 (en) | 1988-05-31 | 1988-05-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01176196U JPH01176196U (en) | 1989-12-15 |
JPH0535197Y2 true JPH0535197Y2 (en) | 1993-09-07 |
Family
ID=31297385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988072211U Expired - Lifetime JPH0535197Y2 (en) | 1988-05-31 | 1988-05-31 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0535197Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52100709A (en) * | 1976-02-20 | 1977-08-24 | Kido Kensetsu Kogyo | Semiiopen shield excavator |
JPS60112909A (en) * | 1983-11-19 | 1985-06-19 | Takeshi Hayashi | Mooring device |
-
1988
- 1988-05-31 JP JP1988072211U patent/JPH0535197Y2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52100709A (en) * | 1976-02-20 | 1977-08-24 | Kido Kensetsu Kogyo | Semiiopen shield excavator |
JPS60112909A (en) * | 1983-11-19 | 1985-06-19 | Takeshi Hayashi | Mooring device |
Also Published As
Publication number | Publication date |
---|---|
JPH01176196U (en) | 1989-12-15 |
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