JPH0510074Y2 - - Google Patents
Info
- Publication number
- JPH0510074Y2 JPH0510074Y2 JP18039187U JP18039187U JPH0510074Y2 JP H0510074 Y2 JPH0510074 Y2 JP H0510074Y2 JP 18039187 U JP18039187 U JP 18039187U JP 18039187 U JP18039187 U JP 18039187U JP H0510074 Y2 JPH0510074 Y2 JP H0510074Y2
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- outer shell
- space
- diameter
- vehicle limit
- 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
- 239000000463 material Substances 0.000 claims description 15
- 238000010276 construction Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- 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、たとえば地下鉄などに利用される断
面形状がだるま形のトンネルに関するものであ
る。[Detailed Description of the Invention] Industrial Field of Use The present invention relates to a tunnel having a potbell-shaped cross section, which is used, for example, in a subway.
従来の技術
従来、狭い道路や土地を利用して地下鉄などの
トンネルを構築する場合は、第４図に示すよう
に、道路２０を開削２１し、２段式のコンクリー
ト構造物２２を構築したのち、開削２１の残部を
埋め戻すことで行つていた。しかし、このような
開削工法は交通事情により施工できないときもあ
り、この場合にはシールド工法が採用される。シ
ールド工法は、圧気工法併用による手堀りを除い
て、通常、回転カツターなどで機械掘削するもの
で、第５図に示すように、断面円形の上部トンネ
ル２３の上部外殻部２４と下部トンネル２５の下
部外殻部２６とが等円であり、かつ両トンネル２
３，２５の連通部には、中間床板に相当するセグ
メントの結合材（横材）２７を配設している。Conventional Technology Conventionally, when constructing a tunnel such as a subway using a narrow road or land, as shown in FIG. This was done by backfilling the remaining portion of excavation 21. However, there are times when such open-cut construction methods cannot be carried out due to traffic conditions, and in these cases, shield construction methods are adopted. In the shield method, excavation is usually done mechanically using a rotary cutter, except for manual excavation using a pressure-air method.As shown in FIG. 25 and the lower outer shell portion 26 are equicircular, and both tunnels 2
A connecting member (horizontal member) 27 of the segment corresponding to the intermediate floor plate is disposed in the communication portion between the members 3 and 25.
考案が解決しようとする問題点
上記の従来形式によると、等円の両外殻部２
４，２６を電車の車輌限界２８に充分に接近した
小径にすると、結合材２７は両外殻部２４，２６
側から支持することができても下方からの支持が
できないので強度的に不安定となる。そのため第
６図に示すように、両外殻部２４，２６とも大径
に形成し、下部トンネル２５の側部空間を利用し
て、結合材２７を下方から支持する支持材２９を
設けることが考えられる。しかし、この場合に
は、上部トンネル２３も大きな断面となることか
ら、その側部空間も含めて広いデツドスペースが
発生し、工事費、資材費などが不経済となる。Problems to be solved by the invention According to the above conventional format, both outer shell parts 2 of equal circles
4 and 26 are made small in diameter sufficiently close to the vehicle limit 28 of the train, the bonding material 27 is attached to both the outer shell parts 24 and 26.
Even if it can be supported from the side, it cannot be supported from below, making it unstable in terms of strength. Therefore, as shown in FIG. 6, both the outer shell parts 24 and 26 can be formed to have a large diameter, and the side space of the lower tunnel 25 can be used to provide a support member 29 that supports the binding material 27 from below. Conceivable. However, in this case, since the upper tunnel 23 also has a large cross section, a large dead space is generated including the side space, and construction costs, material costs, etc. become uneconomical.
本考案の目的とするところは、中間の結合材の
支持を安定して行え、しかもデツドスペースの発
生を最小限としただるま形のトンネルを提供する
点にある。 An object of the present invention is to provide a pot-shaped tunnel that can stably support the intermediate bonding material and minimize the generation of dead space.
問題点を解決するための手段
上記目的を達成すべく本考案のだるま形のトン
ネルは、上部トンネルの上部外殻部の下部と下部
トンネルの下部外殻部の上部とを連通して一体形
成し、下部外殻部を上部外殻部よりも大径の円形
に構成するとともに、その連通部に結合材を設け
ている。Means for Solving the Problems In order to achieve the above object, the bell-shaped tunnel of the present invention is integrally formed by communicating the lower part of the upper outer shell of the upper tunnel with the upper part of the lower outer shell of the lower tunnel. The lower outer shell portion is configured to have a circular shape with a larger diameter than the upper outer shell portion, and a bonding material is provided in the communication portion thereof.
作 用
かかる本考案の構成によると、上部トンネルは
車輌限界に充分に近づけた小径にし得るととも
に、下部トンネルは、車輌限界に対して充分な空
間が生じる大径であることから地耐力が増加し、
また余分な空間を利用して結合材を支持する支持
材を配設し得る。Effects According to the configuration of the present invention, the upper tunnel can be made small in diameter sufficiently close to the vehicle limit, and the lower tunnel has a large diameter that provides sufficient space relative to the vehicle limit, so that the bearing capacity of the ground is increased. ,
Further, the extra space can be used to provide a support member for supporting the bonding material.
実施例
以下に本考案の一実施例を第１図に基づいて説
明する。Embodiment An embodiment of the present invention will be described below with reference to FIG.
１は上部トンネル２の上部外殻部、３は下部ト
ンネル４の下部外殻部で、両外殻部１，３は両ト
ンネル２，４の上・下部を連通させたところの重
ね合わせ状で一体形成される。さらに両外殻部
１，３は円形に構成され、このとき上部外殻部１
の内径ｄを車輌限界５に充分に接近した小径にす
るとともに、下部外殻部３の内径Ｄを上部外殻部
１の内径ｄよりも大径、すなわちＤ＞ｄとして、
外殻を断面だるま状に形成している。両トンネル
２，４の連通部には、中間床板に相当するセグメ
ントの結合材（横材）６を下方からの嵌め込み形
式にて配設している。そして大径Ｄの下部トンネ
ル４の側部空間を利用して、結合材６を下方から
支持する支持材７を設けている。 1 is the upper outer shell of the upper tunnel 2, 3 is the lower outer shell of the lower tunnel 4, and both outer shells 1 and 3 are superimposed where the upper and lower parts of the tunnels 2 and 4 are communicated. Formed in one piece. Furthermore, both the outer shell parts 1 and 3 are configured in a circular shape, and in this case, the upper outer shell part 1
The inner diameter d of the lower shell part 3 is set to be a small diameter sufficiently close to the vehicle limit 5, and the inner diameter D of the lower outer shell part 3 is set to be larger than the inner diameter d of the upper outer shell part 1, that is, D>d,
The outer shell is shaped like a potbellied cross section. A connecting member (cross member) 6 of a segment corresponding to an intermediate floor plate is provided in the communicating portion of both tunnels 2 and 4 by being fitted from below. Using the side space of the lower tunnel 4 having a large diameter D, a support member 7 is provided to support the binding member 6 from below.
上記実施例によると、上部トンネル２は車輌限
界５に充分に近づけたデツドスペースが殆んど生
じない小径ｄとし得る。そして下部トンネル４
は、車輌限界５に対して充分な空間が生じる大径
Ｄであることから、その両側部空間を利用して配
設した支持材７により結合材６を安定して確実に
支持し得る。支持材７を配設したとしても両側部
には空間が残存するが、この残存空間８は、電力
ケーブルや、上水道管、下水道管などの共同溝と
して、またプラツトホームとしても使用できる。 According to the embodiment described above, the upper tunnel 2 can have a small diameter d sufficiently close to the vehicle limit 5 so as to create almost no dead space. and lower tunnel 4
has a large diameter D that provides sufficient space relative to the vehicle limit 5, so that the bonding material 6 can be stably and reliably supported by the supporting members 7 disposed by utilizing the spaces on both sides. Even if the supporting members 7 are provided, a space remains on both sides, and this remaining space 8 can be used as a common channel for power cables, water pipes, sewer pipes, etc., or as a platform.
第２図は別の実施例を示し、両外殻部１，３の
接続部に生じた内方への突部１０に、セグメント
の結合材６をトンネルの長さ方向に載置した状態
で配設している。 FIG. 2 shows another embodiment, in which a segment binding material 6 is placed in the longitudinal direction of the tunnel on the inward protrusion 10 formed at the connection between the two outer shells 1 and 3. It is set up.
第３図は、さらに別の実施例を示し、下部外殻
部３の内径Ｄをさらに大とし、その中央部に支持
材７を配設するとともに、この支持材７の両側に
車輌限界５に近い空間を形成している。 FIG. 3 shows yet another embodiment in which the inner diameter D of the lower outer shell portion 3 is made larger, a support member 7 is disposed in the center, and a support member 7 is provided on both sides of the support member 7 to meet the vehicle limit 5. They form a close space.
考案の効果
上記構成の本考案によると、上部トンネルは車
輌限界に充分に近づけたデツトスペースの殆んど
生じない小径にでき、また下部トンネルは、車輌
限界に対して充分な空間が生じる大径であること
から、地耐力が増加し、また余分な空間を利用し
て支持材を配設することができて、中間の結合材
の支持を確実にかつ安定して行うことができる。
このように外殻をだるま形に形成することによつ
て、デツドスペースの発生を最小限にできながら
もトンネル構造の強度向上をはかることができ、
工事費、資材費などの面から経済的となり、また
下部トンネルの支持材を配設したあとの残存空間
は、共同溝やプラツトホーム用に使用できる。Effects of the Invention According to the present invention having the above configuration, the upper tunnel can be made small enough to close to the vehicle limit and have a small diameter with almost no dead space, and the lower tunnel can be made large in diameter so that there is sufficient space for the vehicle. Because of this, the bearing capacity of the ground increases, and the extra space can be used to arrange the supporting material, so that the intermediate bonding material can be supported reliably and stably.
By forming the outer shell in a potbellied shape in this way, it is possible to improve the strength of the tunnel structure while minimizing the generation of dead space.
It is economical in terms of construction costs and material costs, and the remaining space after installing the support materials for the lower tunnel can be used for a common ditch or platform.
第１図〜第３図はそれぞれ本考案の実施例を示
す縦断正面図、第４図〜第６図はそれぞれ従来例
を示す縦断正面図である。
１……上部外殻部、２……上部トンネル、３…
…下部外殻部、４……下部トンネル、５……車輌
限界、６……結合材、７……支持材、８……残存
空間、１０……突部。
FIGS. 1 to 3 are longitudinal sectional front views showing embodiments of the present invention, and FIGS. 4 to 6 are longitudinal sectional front views showing conventional examples, respectively. 1... Upper shell part, 2... Upper tunnel, 3...
...Lower outer shell portion, 4...Lower tunnel, 5...Vehicle limit, 6...Binding material, 7...Supporting material, 8...Remaining space, 10...Protrusion.
Claims (1)
と、上部トンネルよりも大径の下部トンネルの下
部外殻部の上部とを連通して一体形成し、この連
通部に結合材を設けたことを特徴とするだるま形
のトンネル。 The lower part of the upper outer shell part of the upper tunnel having a circular cross section and the upper part of the lower outer shell part of the lower tunnel having a larger diameter than the upper tunnel are integrally formed, and a connecting material is provided in this communicating part. A potbelly-shaped tunnel featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18039187U JPH0510074Y2 (en) | 1987-11-25 | 1987-11-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18039187U JPH0510074Y2 (en) | 1987-11-25 | 1987-11-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0184400U JPH0184400U (en) | 1989-06-05 |
| JPH0510074Y2 true JPH0510074Y2 (en) | 1993-03-11 |
Family
ID=31471912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18039187U Expired - Lifetime JPH0510074Y2 (en) | 1987-11-25 | 1987-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510074Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632245A (en) * | 2015-02-04 | 2015-05-20 | 北京市政建设集团有限责任公司 | Method using multi-pilot-tunnel expanding excavation large-diameter shield tunnel for building subway station |
-
1987
- 1987-11-25 JP JP18039187U patent/JPH0510074Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0184400U (en) | 1989-06-05 |
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