CN207750087U - A kind of superposed type shield tunnel structure - Google Patents
A kind of superposed type shield tunnel structure Download PDFInfo
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- CN207750087U CN207750087U CN201721563761.3U CN201721563761U CN207750087U CN 207750087 U CN207750087 U CN 207750087U CN 201721563761 U CN201721563761 U CN 201721563761U CN 207750087 U CN207750087 U CN 207750087U
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- block
- shield tunnel
- tunnel structure
- haunch
- superposed type
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Abstract
The utility model is related to a kind of superposed type shield tunnel structures, it is characterised in that the cross section of the shield tunnel structure is quadrangle, and the width-to-height ratio of the quadrilateral structure is 1:1.0 ~ 1.3, side plate, top plate and the bottom plate of the shield tunnel structure are domes, and prefabricated bracket is arranged in the both sides of the shield tunnel structure, and lane plate is mounted on prefabricated bracket, which is divided into upper track and lower track.The advantages of the utility model, is all formed using splicing prefabricated components for the lining cutting in tunnel, and haunch section of jurisdiction is arranged bracket and constructs, integrated prefabricated.Lane plate is all prefabricated components, and the primary assembled complete tunnel structure of formation, realizes the complete prefabricated of structure in shield tail.
Description
Technical field
The utility model is related to section shield tunnels, and in particular to a kind of superposed type shield tunnel structure and its
Construction method.
Background technology
Along with the process of Chinese Urbanization's, the vehicle population and population in city constantly increase therewith, need thus
More and more underpass and city underground speedy way are built to solve or alleviate city dweller " street crossing is difficult " and vehicular traffic
The problems such as crowded.Simultaneously with the Large scale construction of subway, the problem of urban underground space utilization ratio, also gradually highlights.How
Maximally utilizing for the underground space is realized in the limited underground space, becomes current hot spot.
In soft clay area, shield construction influencing surrounding enviroment smaller method as a kind of, is widely used in ground
Iron engineering construction.Common shielding tunnel excavator is mostly circle, and circular tunnel has the advantages that structure is reasonable, but also same
When have the shortcomings that space availability ratio is relatively low.Then special-shaped shield is increasingly becoming the research side for improving urban underground space efficiency
To the higher superposed type section shield tunnel structure type of underground space scetion utilization is come into being.
Compared with typical round section shield tunnel, the shield tunnel of superposed type section is with following significant excellent
Gesture.Compared with circular cross section, the occupied underground space of superposed type abnormity shield tunnel section can save 20% or so.With double
To two tracks（Motor bus can be run）For, the overall diameter using tunnel when circular cross-section reaches 14.5m or so, different using superposed type
The width in tunnel is 11.0m when shape bore tunnel, can save 3.5m in the direction of the width, as shown in Figure 1.When tunnel is in pile foundation 11
And when being passed through between close to buildings, the clear distance between tunnel and close to buildings is increased, and engineering is carried out, such as Fig. 2
It is shown.
Precast construction has obtained a large amount of application in building, science of bridge building, is also applied in underground structure.In advance
Structure processed is larger excellent saving manpower, reducing cast-in-place construction etc. in tunnel and have using mechanized construction, pipelining
Gesture is to speed up the important channel of speed of application." prefabricated, modularization " has become the frontline technology designed and constructed at present and hair
Open up direction.For shield tunnel, traditional shield tunnel internal structure design generally use cast-in-place concrete structure.Due to sky
Between it is narrow, construction organization is difficult, and speed of application is slow.
Utility model content
The purpose of this utility model is to provide a kind of bilevel superposed type shield according to above-mentioned the deficiencies in the prior art
Method tunnel structure, to realize the road traffic of opposing traffic and the demand of rail traffic.
To achieve the goals above, the technical solution of the utility model is as follows：The cross section of the shield tunnel structure
For quadrangle, and the width-to-height ratio of the quadrilateral structure is 1:1.0 ~ 1.3, side plate, the top plate of the shield tunnel structure
It is domes with bottom plate, prefabricated bracket is arranged in the both sides of the shield tunnel structure, and lane plate is mounted on prefabricated bracket
On, which is divided into upper track and lower track.
Preferably, the wall thickness of the shield tunnel structure is the 4 ~ 6% of its height.
Preferably, the shield tunnel structure is spliced by several Lining Rings along its length, and each Lining Ring is equal
By the block that binds, arch bottom, left haunch block, right haunch block, and the corner block of bind block and left haunch block, right haunch block is connected,
And the corner block of connection arch bottom and left haunch block, right haunch block is bolted；The left haunch block, right haunch
The corresponding position of block is provided with prefabricated bracket.
Preferably, the shield tunnel structure is spliced by several sections of tunnel lining structures, adjacent two sections of tunnels lining
The section of jurisdiction splicing seams for building structure mutually stagger, and realize staggered joint erection.
During construction and use, the possibility for being inwardly indented deformation is had in the middle part of haunch section of jurisdiction, it is therefore preferred that institute
It states and cast iron built-in fitting is set in lane plate and prefabricated bracket, the lane plate is connect with prefabricated bracket by cast iron built-in fitting, made
The lane plate is obtained on the basis of supporting vehicle stress, moreover it is possible to play the role of resisting the retraction deformation of haunch section of jurisdiction.
The utility model has the advantages that upper layer and lower layer channel is excavated out using big cross section section shield machine, it is shared flat
Face width reaches minimum, to realize maximally utilizing in the city narrow zone underground space.This construction method is dark
Digging method, without carrying out ground excavation, does not influence traffic above-ground in addition to active well.In the top surface in tunnel arch knot is used with side wall
Structure can reduce the internal force of lining cutting, reach the optimization of structure.The lining cutting in tunnel is all formed using splicing prefabricated components, arch
Waist section of jurisdiction is arranged bracket and constructs, integrated prefabricated.Lane plate is all prefabricated components, the primary assembled complete tunnel of formation in shield tail
Road structure realizes the complete prefabricated of structure.Section of jurisdiction the staggered joint erection of section of jurisdiction is realized using asymmetric partitioned mode.The type tunnel
Road can be applied to road traffic or rail traffic.
Description of the drawings
Fig. 1 is circular cross section and overlapping section stress comparison diagram.
Fig. 2 is the schematic diagram that Tunnel Passing is realized in narrow space.
Fig. 3 is prefabricated pipe section block diagram.
Fig. 4 is the assembled precedence diagram in lane plate midway.
Fig. 5 is lane plate finally assembled precedence diagram.
Fig. 6 is the block form of A, B ring.
Fig. 7 is the schematic diagram of the double-deck subway tunnel.
Fig. 8 is the small block liner structure form that binds.
Fig. 9 is tunnel deformation schematic diagram.
Figure 10 is the application scenarios of the utility model.
Figure includes：
1 binds block, 2 arch bottoms, 3 left haunch blocks, 4 right haunch blocks, 5 upper left corner blocks, 6 upper right corners
Block, 7 lower-left corner blocks, 8 bottom right corner blocks, 9 lane plates, 10 brackets, 11 pile foundations, 12 sewage pipes, 13 subway tunnels.
Specific implementation mode
The feature of the utility model and other correlated characteristics are made further specifically by embodiment below in conjunction with attached drawing
It is bright, in order to the understanding of technical staff of the same trade.
As shown, a kind of superposed type shield tunnel structure, it is characterised in that the shield tunnel structure it is transversal
Face is symmetrical and symmetrical above and below quadrangle（Class rectangle structure）, and the ratio between the width of the quadrilateral structure and height are
1:1.0 ~ 1.3, side plate, top plate and the bottom plate of the shield tunnel structure are domes,（Wherein top plate and bottom board symmetry
Setting, both sides side plate are also symmetrical arranged）, the thickness of the liner structure is not less than the 5% of height, the shield tunnel structure
Both sides prefabricated bracket 10 is set, lane plate 9 is mounted on prefabricated bracket 10, which is divided into upper track
With lower track.
According to the environmental condition around the purposes in space, corresponding track clearance, engineering, adjust the width of liner structure with
Highly.
Preferably, the shield tunnel structure is by the block 1 that binds, arch bottom 2, left haunch block 3, right haunch block 4, upper left
Corner block 5, upper right corner block 6, lower-left corner block 7, bottom right corner block 8 are spliced；The left haunch block 3, right haunch block
4 corresponding position is provided with prefabricated bracket 10.
During construction and use, the possibility of toe-in deformation is had in the middle part of haunch section of jurisdiction, it is therefore preferred that
The lane plate is connect by ironcasting with bracket by pre-buried ironcasting on lane plate and bracket such as bolt, nut so that should
Lane plate is on the basis of supporting vehicle stress, moreover it is possible to play the role of resisting haunch section of jurisdiction convergent deformation.
The side wall and top plate of tunnel lining structure are all made of domes, and the arch camber amount of domes is according to field condition tune
Section, arch camber amount is about 150-500mm, can reduce the internal force of lining cutting, reaches the optimization of structure.
Fig. 4 is the preferred embodiment according to the utility model, the construction procedure schematic diagram of the assembled sequence in lane plate midway.Such as
Shown in figure, which includes the following steps：
A, bind block, arch bottom, left haunch block, right haunch block, upper left corner block, upper right corner block, lower-left corner are made
Block and bottom right corner block, wherein the corresponding position of left haunch block, right haunch block is provided with prefabricated bracket；
B, left haunch block is mutually spliced by lower-left corner block and the left side of arch bottom, right haunch block is passed through into bottom right corner
The right side of block and arch bottom is mutually spliced, and the prefabricated bracket of the prefabricated bracket of left haunch block and right haunch block is oppositely arranged；
C, lane plate is fixed on by pre-embedded bolt on the prefabricated bracket of left haunch block and right haunch block；
D, the upper left corner block that passes on left for the block that binds is fixed on left haunch block, passes through upper right on the right side of the block that will bind
Corner block is fixed on right haunch block, forms a Lining Ring；
E, several Lining Rings are spliced successively, forms superposed type shield tunnel structure.
Fig. 5 is the construction procedure schematic diagram of the last assembled sequence of lane plate according to another embodiment of the utility model.Such as figure
Shown, which includes the following steps：
A, bind block, arch bottom, left haunch block, right haunch block, upper left corner block, upper right corner block, lower-left corner are made
Block and bottom right corner block, wherein the corresponding position of left haunch block, right haunch block is provided with prefabricated bracket；
B, left haunch block is mutually spliced by lower-left corner block and the left side of arch bottom, right haunch block is passed through into bottom right corner
The right side of block and arch bottom is mutually spliced, and the prefabricated bracket of the prefabricated bracket of left haunch block and right haunch block is oppositely arranged；
C, the upper left corner block that passes on left for the block that binds is fixed on left haunch block, passes through upper right on the right side of the block that will bind
Corner block is fixed on right haunch block, forms a Lining Ring；
D, lane plate is fixed on by pre-embedded bolt on the prefabricated bracket of left haunch block and right haunch block；
E, several Lining Rings are spliced successively, forms superposed type shield tunnel structure.
It can be seen that the main distinction of two embodiments is the erection sequence of lane plate, it is however generally that, in lane plate
Way is installed more preferably, because lane plate can give the haunch section of jurisdiction of both sides certain support after fixing, it can be prevented in subsequent construction
Middle generation convergent deformation.
As shown in fig. 6, the Lining Ring piecemeal can be divided into two kinds of A, B ring, adjacent two sections of Lining Rings are real by the combination of AB rings
Existing staggered joint erection.
Fig. 7 is the superposed type shield tunnel structure of certain rail traffic, is realized by adjusting the width and height in section
The opposing traffic of subway in the width range of 6m or so.
Fig. 8 is the small block liner structure form that binds, convenient for the piecemeal of section of jurisdiction, and the form of the small block that binds can also be used,
I.e. upper section of jurisdiction is made of at least two pieces of piecemeals.Using it is small bind block when, assembling construction personnel are observed that between the both sides of section of jurisdiction
Gap, section of jurisdiction weight is small, is easily adjusted.
It is found through experiment that such as the class rectangle tunnel structure of the utility model, tunnel haunch can occur to be biased to tunnel internal
Convergent deformation is illustrated in figure 9 it and is not added with the deformation analysis figure of lane plate, and lane plate, which synchronizes installation, can reduce the change in tunnel
Shape.The mode of the utility model sampling pre-buried ironcasting in bracket and lane plate, will pass through cast iron between lane plate and bracket
Part connects so that lane plate is bearing lane load simultaneously, can also bear axial compressive force, can reduce the span of side wall, plays horizontal
The effect of support, the overall stiffness of enhancing structure effectively reduce the deformation in tunnel, improve the waterproof ability in tunnel.
Figure 10 is the application scenarios of the utility model, it can be achieved that in limited space, and the underground space is maximized
Using.As shown, there is sewage pipe 12 above, lower section has subway tunnel, both sides to be arranged in the small space of pile foundation, and setting is originally
The class rectangle structure tunnel of utility model.
Claims (5)
1. a kind of superposed type shield tunnel structure, it is characterised in that the cross section of the shield tunnel structure is quadrangle,
And the width-to-height ratio of the quadrilateral structure is 1:1.0 ~ 1.3, side plate, top plate and the bottom plate of the shield tunnel structure are
Prefabricated bracket is arranged in the both sides of domes, the shield tunnel structure, and lane plate is mounted on prefabricated bracket, by the shield
Method tunnel structure is divided into track and lower track.
2. superposed type shield tunnel structure according to claim 1, it is characterised in that the shield tunnel structure
Wall thickness is the 4 ~ 6% of its height.
3. superposed type shield tunnel structure according to claim 1, it is characterised in that shield tunnel structure is along length
Direction is spliced by several Lining Rings, and each Lining Ring is by the block that binds, arch bottom, left haunch block, right haunch block, Yi Jilian
Connect the corner block of bind block and left haunch block, right haunch block, and the corner block of connection arch bottom and left haunch block, right haunch block
It is bolted；The left haunch block, right haunch block corresponding position be provided with prefabricated bracket.
4. superposed type shield tunnel structure according to claim 1, it is characterised in that the superposed type shield tunnel
The section of jurisdiction splicing seams of adjacent two Lining Ring mutually stagger in structure, realize staggered joint erection.
5. superposed type shield tunnel structure according to claim 1, it is characterised in that the lane plate is pre- by cast iron
Embedded part is connect with prefabricated bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563761.3U CN207750087U (en) | 2017-11-21 | 2017-11-21 | A kind of superposed type shield tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721563761.3U CN207750087U (en) | 2017-11-21 | 2017-11-21 | A kind of superposed type shield tunnel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207750087U true CN207750087U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721563761.3U Active CN207750087U (en) | 2017-11-21 | 2017-11-21 | A kind of superposed type shield tunnel structure |
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| CN (1) | CN207750087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859522A (en) * | 2017-11-21 | 2018-03-30 | 上海市政工程设计研究总院（集团）有限公司 | A kind of superposed type shield tunnel structure and its construction method |
| CN111396079A (en) * | 2019-04-23 | 2020-07-10 | 中国建筑股份有限公司 | Superposed assembly type tunnel secondary lining structure and construction method thereof |
-
2017
- 2017-11-21 CN CN201721563761.3U patent/CN207750087U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859522A (en) * | 2017-11-21 | 2018-03-30 | 上海市政工程设计研究总院（集团）有限公司 | A kind of superposed type shield tunnel structure and its construction method |
| CN111396079A (en) * | 2019-04-23 | 2020-07-10 | 中国建筑股份有限公司 | Superposed assembly type tunnel secondary lining structure and construction method thereof |
| CN111396079B (en) * | 2019-04-23 | 2021-12-21 | 中国建筑股份有限公司 | Superposed assembly type tunnel secondary lining structure and construction method thereof |
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