CN104500081A - Steel back support in subway tunnel construction - Google Patents
Steel back support in subway tunnel construction Download PDFInfo
- Publication number
- CN104500081A CN104500081A CN201410832865.4A CN201410832865A CN104500081A CN 104500081 A CN104500081 A CN 104500081A CN 201410832865 A CN201410832865 A CN 201410832865A CN 104500081 A CN104500081 A CN 104500081A
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- CN
- China
- Prior art keywords
- steel
- tunnel
- arc plate
- shield
- back support
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Abstract
The invention relates to a steel back support in subway tunnel construction. The steel back support is arranged between a second lining of a mined tunnel and a shield tunnel and serves as a shield starting counterforce substrate; the whole steel back support is a ring, and consists of six external circle arc plates and internal circle arc plates altogether; each arc plate is 90mm in length and 1,075mm in width, the outer diameter of each arc plate is slightly smaller than the outer diameter of the mined tunnel and is 7,500mm, and the inner diameter of each arc plate is consistent with the inner diameter of a duct piece of the shield tunnel and is 5,500mm. The steel back support solves the problem of connecting two types of tunnels and meets the requirement on a counterforce support for shield starting construction; the steel back support is preprocessed, is transported to a site before installation and then is installed, and the restrict influence of a construction period is greatly reduced.
Description
Technical field
The present invention relates to a kind of for leaning on after the steel in constructing metro tunnel, especially one is arranged on Tunneling by mining method two and serves as a contrast and between shield tunnel, adopt after steel work and reach the dissimilar tunnel of connection two kinds by design, lean on after reaching counter-force pedestal and the object steel of saving duration as shield launching.
Background technology
Domestic urban rail transit construction is existing three ten years so far, hand over from initial rail and build so far, usually in shield-tunneling construction, adopt after laying temporary steel in end well AT STATION and support by the counter-force being used as shield launching section, and by being only confined to Interim use in end well after this kind of steel, can not as connection two kinds of sizes, the permanent component in the different tunnel of type and the rear of shield launching by supporting.
For this situation, in order to reach connection two kinds of different sizes, the tunnel of type and the rear of shield launching by support object, need development a kind of be applied to the steel be connected with shield tunnel at Tunneling by mining method after lean on.
Summary of the invention
The present invention will provide a kind of for leaning on after the steel in constructing metro tunnel, lean on for after the steel designed in constructing metro tunnel, by serving as a contrast at Tunneling by mining method two and install between shield tunnel, reach the dissimilar tunnel of connection two kinds by design after adopting steel work, reach the counter-force pedestal as shield launching and the object of saving duration.
For achieving the above object, technical scheme of the present invention is:
A kind of for leaning on after the steel in constructing metro tunnel, be arranged on Tunneling by mining method two to serve as a contrast and between shield tunnel, as the counter-force pedestal of shield launching, entirety is annulus, is made up of, is divided into six pieces external arc plate and Inner arc plate, every block length 900mm, wide is 1075mm, and outside dimension is less than the first lining of Tunneling by mining method is 7500mm, and internal diameter size is consistent with duct pieces of shield tunnel is 5500mm.
The external arc plate leaned on after described steel and Inner arc plate form by 20mm steel plate is bending.Reserving hole on the external arc plate leaned on after described steel, by the slider roller needed for installing after being used for laying steel, increases floor in Inner arc plate, overall stressed for strengthening.
The invention has the beneficial effects as follows:
Lean on and construction method after the steel of the present invention's design, solve the connectivity problem in two type tunnels, and the needs of the reaction frame that shield launching can be provided to construct, by adopting preprocessing after steel, delivering to field conduct before installation and installing, greatly reducing the restricted influence of duration.
Accompanying drawing explanation
Fig. 1 is by being arranged on schematic diagram in tunnel after steel;
Fig. 2 is by overall generalized section after steel;
Fig. 3 is the sectional view along A-A in Fig. 2;
Fig. 4 is the sectional view along B-B in Fig. 2;
Fig. 5 is ZX lower-left block schematic diagram
Fig. 6 is ZX lower-left block schematic diagram
Fig. 7 is YX bottom right block schematic diagram
Fig. 8 is YX bottom right block schematic diagram;
Fig. 9 is sole piece schematic diagram under XD;
Figure 10 is on YS, ZS, DS(upper right, upper left, top) block schematic diagram;
Figure 11 is on YS, ZS, DS(upper right, upper left, top) block schematic diagram;
Figure 12 is the pre-buried roller generalized section of outer cambered surface after steel.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As described in Figure 1, of the present invention for leaning on after the steel in constructing metro tunnel, by serving as a contrast at Tunneling by mining method two and install between shield tunnel, be used as counter-force pedestal and the tunnel permanent structure of shield launching, its concrete steps are:
(1) be connector for Tunneling by mining method and shield tunnel by 1 after steel, and as the counter-force pedestal that shield launching is constructed.
(2) serve as a contrast in side section 4 at Tunneling by mining method two and arrange built-in fitting, with after steel by 1 connection function;
(3) pre-buried plurality of steel plates 2 on two lining intrados, leans on 1 after installing steel;
(4) at the pre-buried circle steel plate 3 of the rear end face of shield launching endless tube sheet intrados, play with leaning on 1 after steel and be connected sealing effect.
As shown in Fig. 2 to Figure 12, lean on after the steel be applied in constructing metro tunnel of the present invention, its entirety is annulus, be made up of external arc plate and Inner arc plate, be divided into 6 pieces, form of structure is consistent with wedge shape section of jurisdiction, every block length about 900 ~ 920 mm, be designed to tenon with section of jurisdiction link, long 920mm, other is long is standard 900mm; Wide is 1075mm, and outside dimension is more smaller than the first lining of Tunneling by mining method is 7500mm, and internal diameter size is consistent with duct pieces of shield tunnel is 5500mm.After steel, outer arc plate and Inner arc plate employing 20mm steel plate bend and form, and adopt 30mm thick plates to form between inside and outside arc plate.Outer arc plate reserving hole 5 after steel, by the slider roller needed for installing after being used for laying steel, increases floor in inside and outside arc plate, overall stressed to strengthen.
Concrete structure is as follows:
(1) material is leaned on after steel: Q345B steel.
(2) after steel by characteristic: possess and connect Mining Method and shield tunnel and the characteristic as permanent structure.
(3) antiseptic property index is leaned on after steel: by after making after steel, the exposed surface leaned on after shield structure need be coated with solvent-free super thick membranous type epoxy coating two degree, specific as follows:
Before a, painting epoxy coating, processing of rust removing should be made in steel beam column surface, and derusting reaches S3 level;
Steel beam column after b, rust cleaning is first coated with 702 epoxy zinc rich primer 20 μm, is coated with solvent-free super thick membranous type epoxy coating 1100 μm after cured again.
(4) after steel by being divided into 6 pieces, be respectively ZX, YX, XD, YS, ZS, DS block (Fig. 5 ~ 11), adjacent two pieces of connections connect with hoop bolt.
(5) outer arc plate reserving hole after steel, by the slider roller needed for installing after being used for laying steel, slider roller leans against the slip that Tunneling by mining method just serves as a contrast surface after being used for realizing steel.Floor is increased in inside and outside arc plate, overall stressed to strengthen.
Claims (3)
1. one kind for leaning on after the steel in constructing metro tunnel, be arranged on Tunneling by mining method two to serve as a contrast and between shield tunnel, as the counter-force pedestal of shield launching, it is characterized in that: overall is annulus, is made up of, is divided into six pieces external arc plate and Inner arc plate, every block length 900mm, wide is 1075mm, and outside dimension is less than the first lining of Tunneling by mining method is 7500mm, and internal diameter size is consistent with duct pieces of shield tunnel is 5500mm.
2. according to claim 1 for leaning on after the steel in constructing metro tunnel, it is characterized in that: the external arc plate leaned on after described steel and Inner arc plate form by 20mm steel plate is bending.
3. according to claim 2 for leaning on after the steel in constructing metro tunnel, it is characterized in that: reserving hole on the external arc plate leaned on after described steel, by the slider roller needed for installing after being used for laying steel, in Inner arc plate, increase floor, overall stressed for strengthening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832865.4A CN104500081B (en) | 2014-12-29 | 2014-12-29 | For being leaned on after the steel in constructing metro tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410832865.4A CN104500081B (en) | 2014-12-29 | 2014-12-29 | For being leaned on after the steel in constructing metro tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500081A true CN104500081A (en) | 2015-04-08 |
| CN104500081B CN104500081B (en) | 2019-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410832865.4A Active CN104500081B (en) | 2014-12-29 | 2014-12-29 | For being leaned on after the steel in constructing metro tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500081B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989623A (en) * | 2017-11-24 | 2018-05-04 | 上海市基础工程集团有限公司 | The erecting device and method leaned on after tunnel inner ring type |
| CN108035717A (en) * | 2017-11-24 | 2018-05-15 | 上海市基础工程集团有限公司 | Installation extension type traveling wheel is leaned on after steel |
| CN108035718A (en) * | 2017-11-24 | 2018-05-15 | 上海市基础工程集团有限公司 | Locking device is leaned on after tunnel inner ring type |
| CN110454178A (en) * | 2019-09-05 | 2019-11-15 | 中铁隧道局集团有限公司 | It is originated in large-diameter shield auger with counter-force structure production method and counter-force structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161694A (en) * | 1989-11-20 | 1991-07-11 | Taisei Corp | Tunnel construction method and shield excavation device |
| JP2001132395A (en) * | 1999-10-29 | 2001-05-15 | Mitsubishi Heavy Ind Ltd | Tunnel construction method and tunnel excavator |
| CN103306685A (en) * | 2013-06-24 | 2013-09-18 | 上海市城市建设设计研究总院 | Shield segment structure and shield tunnel |
| CN203702167U (en) * | 2013-10-21 | 2014-07-09 | 上海市政工程设计研究总院（集团）有限公司 | Composite segment structure |
| CN103953353A (en) * | 2014-04-23 | 2014-07-30 | 中铁十五局集团有限公司 | Shield launching counter-force frame and installation and use method thereof |
-
2014
- 2014-12-29 CN CN201410832865.4A patent/CN104500081B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03161694A (en) * | 1989-11-20 | 1991-07-11 | Taisei Corp | Tunnel construction method and shield excavation device |
| JP2001132395A (en) * | 1999-10-29 | 2001-05-15 | Mitsubishi Heavy Ind Ltd | Tunnel construction method and tunnel excavator |
| CN103306685A (en) * | 2013-06-24 | 2013-09-18 | 上海市城市建设设计研究总院 | Shield segment structure and shield tunnel |
| CN203702167U (en) * | 2013-10-21 | 2014-07-09 | 上海市政工程设计研究总院（集团）有限公司 | Composite segment structure |
| CN103953353A (en) * | 2014-04-23 | 2014-07-30 | 中铁十五局集团有限公司 | Shield launching counter-force frame and installation and use method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989623A (en) * | 2017-11-24 | 2018-05-04 | 上海市基础工程集团有限公司 | The erecting device and method leaned on after tunnel inner ring type |
| CN108035717A (en) * | 2017-11-24 | 2018-05-15 | 上海市基础工程集团有限公司 | Installation extension type traveling wheel is leaned on after steel |
| CN108035718A (en) * | 2017-11-24 | 2018-05-15 | 上海市基础工程集团有限公司 | Locking device is leaned on after tunnel inner ring type |
| CN108035718B (en) * | 2017-11-24 | 2019-03-05 | 上海市基础工程集团有限公司 | Locking device is leaned on after tunnel inner ring type |
| CN108035717B (en) * | 2017-11-24 | 2019-11-12 | 上海市基础工程集团有限公司 | Installation extension type traveling wheel is leaned on after steel |
| CN110454178A (en) * | 2019-09-05 | 2019-11-15 | 中铁隧道局集团有限公司 | It is originated in large-diameter shield auger with counter-force structure production method and counter-force structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104500081B (en) | 2019-06-11 |
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