CN208266605U - A kind of open-cut tunnel structure in upper and lower level overlapping railway line - Google Patents
A kind of open-cut tunnel structure in upper and lower level overlapping railway line Download PDFInfo
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- CN208266605U CN208266605U CN201820631898.6U CN201820631898U CN208266605U CN 208266605 U CN208266605 U CN 208266605U CN 201820631898 U CN201820631898 U CN 201820631898U CN 208266605 U CN208266605 U CN 208266605U
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Abstract
A kind of open-cut tunnel structure in upper and lower level overlapping railway line, including arch open cut tunnel, further include the shape of a saddle road structure to match with arch open cut tunnel；Road structure lower surface matches with arch open cut tunnel upper surface.The beneficial effects of the utility model are: can not only disperse pressure energy outward bears bigger pressure, the stress problem of upper and lower level overlapping railway structure is improved, it is thus also avoided that the measures such as prestressing technique for taking life requirement high；Simultaneously while being able to satisfy the functional requirement of upper and lower level railway line overlap, additionally it is possible to meet the show line requirement that sandwich circuit gradually pulls open up and down.
Description
Technical field
The utility model relates to traffic engineering technical fields, and in particular to a kind of bright in upper and lower level overlapping railway line
Hole structure.
Background technique
Due to the needs of connections, upper and lower level overlapping railway engineering more and more occurs in engineering construction.As newly
Chongqing Railway hinge east loop wire is built at upper span length river bright moon gorge, reserved rail channel is considered, bright moon gorge the Changjiang river grand bridge is set,
To be overlapped four line steel truss girder cable-stayed bridges up and down, lower layer is the eastern loop wire of 160km speed per hour, and upper layer is the height of reserved 250km speed per hour
Iron wire position.Simultaneously as the limitation of landform, certain distance is respectively provided with upper and lower level overlapping tunnel outside the bridge both ends of bright moon gorge the Changjiang river, weight
It needs to be arranged a kind of structure between folded bridge and overlapping tunnel, meets the functional requirement of upper and lower level railway line overlap, meet simultaneously
The show line requirement that upper and lower sandwich circuit gradually pulls open.
Since landform and structure cohesion limit, such as the coupling part of end of the bridge and massif, because establishing Dun Qiao on massif
More difficult and stability is not strong, therefore required structure can not be using common portal frame pier bridge knot in overlapping science of bridge building
Structure.It is often needed according to rectangular frame structure due to the stress defect of frame structure itself between overlapping bridge and overlapping tunnel
The measures frame structure such as prestressing technique is taken just to be able to satisfy force request.Further, since top railway loading directly acts on
In frame head plate, vibration loads of train causes frame structure stress more unfavorable；Rectangular frame is due to stress defect counterweight simultaneously
Folded bridge two-termial line show line is unfavorable.
Thus, in conjunction with the solution of wiring issue between bright moon gorge the Changjiang river grand bridge and both ends overlapping tunnel, the utility model
A kind of shape of a saddle open-cut tunnel structure in upper and lower level overlapping railway line is proposed, for solving the function of upper and lower level overlapping railway line
It is required that, structure stress and route show line problem.
Utility model content
The purpose of the utility model is to provide a kind of open-cut tunnel structures in upper and lower level overlapping railway line, it not only can be to
Outer dispersion pressure energy bears bigger pressure, it is thus also avoided that the measures such as prestressing technique for taking life requirement high；Simultaneously
While being able to satisfy the functional requirement of upper and lower level railway line overlap, additionally it is possible to meet the show line that sandwich circuit gradually pulls open up and down and want
It asks.
The purpose of this utility model is that technical solution in this way is realized, one kind being overlapped railway line for upper and lower level
Open-cut tunnel structure, including arch open cut tunnel further includes the shape of a saddle road structure to match with arch open cut tunnel；Shape of a saddle road structure
Lower surface matches with arch open cut tunnel upper surface.
A kind of open-cut tunnel structure in upper and lower level overlapping railway line of the utility model, perpendicular to road structure extension side
To section shape be in the shape of a saddle, as the connection structure between upper subbase and lower part tunnel, this structure plays in stress
The key effect formed a connecting link；After top train load is dispersed by shape of a saddle road structure, provided closely for lower part arch open cut tunnel
Like uniformly distributed vertical High-speed Train Loads.Arch open cut tunnel effect is mainly comprising lateral load, vertical load and soil layer to tunnel
Drag, lateral load are mainly soil pressure, and vertical load includes that shape of a saddle road structure gravity, train load and one kind are used for
Lower layer is overlapped the open-cut tunnel structure self weight in railway line；Compared with rectangular frame structure, it is excellent that arch open cut tunnel has stronger Technological Economy
Gesture.More firm to reinforce the connection between up-down structure, arch open cut tunnel eliminates waterproof layer, is directly connected to shape of a saddle roadbed knot
Structure.Meanwhile in the case that lower part tunnel structure span and structure are almost unchanged, pass through shape of a saddle road structure, effective solution
The route show line problem of upper and lower overlapping railway.
By adopting the above-described technical solution, the utility model has the advantage that can not only disperse pressure energy outward
Bigger pressure is born, improves the stress problem of upper and lower level overlapping railway structure, it is thus also avoided that take life requirement high
The measures such as prestressing technique；Simultaneously while being able to satisfy the functional requirement of upper and lower level railway line overlap, additionally it is possible in satisfaction
The show line requirement that lower sandwich circuit gradually pulls open.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for being overlapped the open-cut tunnel structure in railway line in the utility model for upper and lower level.
Fig. 2 is the shape of a saddle road structure in the open-cut tunnel structure being overlapped in railway line in the utility model for upper and lower level
A kind of structural schematic diagram.
Fig. 3 is a kind of structural schematic diagram of arch open cut tunnel in the utility model.
In figure: 1. arch open cut tunnels；2. shape of a saddle foundation of road bed；3. ear wall；4. waterproof/drainage structure；5. drain hole；6. filling
Layer；7. open cut tunnel abutment wall；8. footing；9. distributing bar；10. guardrail；11. original place upper thread；12. railway internal rail top surface line；13. backfill
Material layer.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
It further include the shape of a saddle road structure to match with arch open cut tunnel 1 as shown in Figure 1, including arch open cut tunnel 1；Roadbed
Structure lower surface matches with 1 upper surface of arch open cut tunnel.
A kind of open-cut tunnel structure in upper and lower level overlapping railway line of the utility model, perpendicular to road structure extension side
To section shape be in the shape of a saddle, as the connection structure between upper subbase and lower part tunnel, this structure plays in stress
The key effect formed a connecting link；Connection structure of the foundation structure between upper subbase and lower part tunnel rises in structure and stress
The key effect formed a connecting link；Top train load passes to the knot by roadbed flexibility or semi-rigid packing material, diffusion
Structure after then being dispersed again by shape of a saddle foundation structure, provides approximate uniformly distributed vertical train load for lower part arch open cut tunnel 1 and makees
With.Arch open cut tunnel 1 acts on the main drag comprising lateral load, vertical load and soil layer to tunnel, and lateral load is mainly soil
Pressure, vertical load include shape of a saddle road structure gravity, train load and it is a kind of for upper and lower level overlapping railway line on it is bright
Hole dead load；Compared with rectangular frame structure, arch open cut tunnel 1 has stronger technology economy advantage.For reinforce up-down structure it
Between connection it is more firm, arch open cut tunnel 1 eliminates waterproof layer and is directly connected to shape of a saddle road structure.Meanwhile lower part tunnel knot
In the case that structure span and structure are almost unchanged, by shape of a saddle road structure, the line of the upper and lower overlapping railway of effective solution
Road show line problem.
Further, as shown in figures 1 and 3, road structure includes shape of a saddle foundation of road bed 2, ear wall 3, waterproof/drainage structure
4, drain hole 5 and layer 6 is filled；Foundation of road bed 2 is connect with 1 top of arch open cut tunnel, and two sides are equipped with ear wall 3 thereon, fills the setting of layer 6
Inside ear wall 3；It fills and is equipped with waterproof/drainage structure 4 between layer 6 and foundation of road bed 2, waterproof/drainage structure 4 is connected to drain hole 5；It lets out
The setting of water hole 5 is connected to filling with to traffic direction two sides between layer 6 and foundation of road bed 2.Ear wall 3 and shape of a saddle foundation of road bed 2
It provides to fill layer 6 and fills space, play gear shield and 10 basis of guardrail of roadbed filling layer 6, poured using C30 reinforced concrete
It builds；It fills and is equipped with waterproof/drainage structure 4 between layer 6 and foundation of road bed 2；It eliminates waterproof layer and is directly connected to shape of a saddle road structure,
So that arch open cut tunnel 1 connect with shape of a saddle road structure it is stronger；Water in ear wall 3 is directly discharged directly to by drain hole 5
Traffic direction two sides.
Further, foundation of road bed 2 uses C30 concrete structure, and steel mesh is arranged in periphery.The setting of steel mesh can prevent horse
Saddle type foundation of road bed 2 cracks.
Further, foundation of road bed 2 and ear wall 3, which are integrated, pours part.C30 concrete placings are specifically used, formed by integrally casting makes
It is more stable to obtain structure.
Further, waterproof/drainage structure 4 includes non-woven fabrics, splash guard and the screed from bottom to top set gradually.Waterproof
Plate and screed play waterproof and levelling and fixed function.
Further, filling layer 6 is that semi-rigid material fills layer or flexible material fills layer.Semi-rigid material fills layer,
Mixed in soil crushing or that original state is loose a certain amount of inorganic binder (including cement, lime or industrial residue etc.) and
Water, the mixture through mixing and stirring are being compacted with after health, and the material that compression strength meets prescribed requirement is known as inorganic combination
Expect stabilizing material；It is mixed using heat or cold-mix asphalt mixture, pitch penetration type rubble, and the pellet class of any binder is not added
The base of equal materials making.Flexible material fills layer, including graded broken stone, graded gravel, the natural soft-clay for meeting gradation, part
Gravel through rolling mix match made of the base materials such as gradation crushed-gravel and mud knot rubble, mud lime bound macadam, calking rubble.Half
Rigid material fills layer or flexible material fills layer and stress diffusion effectively can be passed to substructure.It is specific to use, it needs
Requirement is filled according to upper layer rail track to select.
Further, as depicted in figs. 1 and 2,1 two sides of arch open cut tunnel are equipped with open cut tunnel abutment wall 7, and 2 lower part of foundation of road bed is equipped with
The footing 8 to match with 7 wall top of open cut tunnel abutment wall；.
Further, footing 8 and the direct construction joint of 7 wall top of open cut tunnel abutment wall pass through 9 connection reinforcement of distributing bar.
Further, two sides are additionally provided with guardrail 10 on ear wall 3.To ensure that operation security, roadbed range are arranged steel construction and protect
Column 10, basis are embedded in shape of a saddle foundation structure ear wall 3 in advance.
Further, in the present invention, it fills layer 6 and 3 lower part of ear wall is located at 11 or less original place upper thread；Fill layer 6
Top is railway track structure, and top surface is internal rail top surface line 12；It is dug in arch open cut tunnel 1 and shape of a saddle road structure two sides side slope
It opens and is equipped with backfilling material layer 13 within the scope of airbreak, backfilling material layer 13 is native rock layers and masonry material layer.
A kind of open-cut tunnel structure in upper and lower level overlapping railway line of the utility model, including arch open cut tunnel 1 and upper layer horse
Saddle type road structure, the key step implemented are as follows:
S1 after excavation slope, applies the arch open cut tunnel 1 of lower rebar concrete tunnel structure first, and reserved with top roadbed
The distributing bar 9 of structure connection；
S2 after tunnel structure intensity reaches the 70% of design strength after lower part, applies top foundation of road bed 2, and in roadbed base
Drain hole 5 is reserved in 3 bottom of ear wall on plinth 2；
S3 applies the waterproof construction 3 of 6 bottom of roadbed filling layer, it is ensured that 6 bottom water body of roadbed filling layer passes through 3 bottom of ear wall
It reserves drain hole 5 and drains in portion；
S4 makees backfilling material layer 13 using native rock layers and masonry material layer between structure and excavation contour line, backfills top surface
Drop-over original ground line 11 is answered, while should ensure that the draining of drain hole 5 is unobstructed；
S5, layering apply roadbed filling layer 6, need to guarantee 12 lower railway structure height of upper layer railway internal rail top surface line；
S6 applies guardrail 10.
Specific embodiment of the present utility model is described in detail above, each process is the prior art, is not gone to live in the household of one's in-laws on getting married herein
It states.
It should be understood that embodiment is merely to illustrate the utility model rather than limitation the scope of the utility model.Furthermore it should manage
Solution, after reading the content taught by the present invention, those skilled in the art can make the utility model any various
Change and modification, such equivalent forms equally fall within the application the appended claims and are limited.
Claims (10)
1. a kind of open-cut tunnel structure in upper and lower level overlapping railway line, including arch open cut tunnel (1), it is characterised in that: further include
The shape of a saddle road structure to match with arch open cut tunnel (1)；Road structure lower surface matches with arch open cut tunnel (1) upper surface.
2. the open-cut tunnel structure according to claim 1 in upper and lower level overlapping railway line, it is characterised in that: shape of a saddle road
Based structures include foundation of road bed (2), ear wall (3), waterproof/drainage structure (4), drain hole (5) and fill layer (6)；Foundation of road bed (2)
It is connect with arch open cut tunnel (1) top, two sides are equipped with ear wall (3) thereon, and it is internal in ear wall (3) to fill layer (6) setting；Fill layer
(6) waterproof/drainage structure (4) are equipped between foundation of road bed (2), waterproof/drainage structure (4) is connected to drain hole (5)；Drain hole (5)
Setting is connected to filling with traffic direction two sides between layer (6) and foundation of road bed (2).
3. the open-cut tunnel structure according to claim 2 in upper and lower level overlapping railway line, it is characterised in that: shape of a saddle road
Base basis (2) uses C30 concrete structure, and steel mesh is arranged in periphery.
4. the open-cut tunnel structure according to claim 2 in upper and lower level overlapping railway line, it is characterised in that: shape of a saddle road
Base basis (2) and ear wall (3), which is integrated, pours part.
5. the open-cut tunnel structure according to claim 2 in upper and lower level overlapping railway line, it is characterised in that: guarded drainage knot
Structure (4) includes the non-woven fabrics, splash guard and screed from bottom to top set gradually.
6. the open-cut tunnel structure according to claim 2 in upper and lower level overlapping railway line, it is characterised in that: fill layer
(6) layer is filled for semi-rigid material or flexible material fills layer.
7. it is overlapped the open-cut tunnel structure in railway line for upper and lower level to described in any claim in 6 according to claim 1,
Be characterized in that: arch open cut tunnel (1) two sides are equipped with open cut tunnel abutment wall (7), and foundation of road bed (2) lower part is equipped with and open cut tunnel abutment wall (7) wall top
The footing (8) to match.
8. a kind of open-cut tunnel structure in upper and lower level overlapping railway line according to claim 7, it is characterised in that: footing
(8) reinforce connecting by distributing bar (9) with open cut tunnel abutment wall (7) wall top construction joint.
9. the according to claim 1, open-cut tunnel structure described in 2,3,4,5,6 or 8 in upper and lower level overlapping railway line, feature
Be: two sides are additionally provided with guardrail (10) on ear wall (3).
10. the open-cut tunnel structure according to claim 7 in upper and lower level overlapping railway line, it is characterised in that: ear wall (3)
Upper two sides are additionally provided with guardrail (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820631898.6U CN208266605U (en) | 2018-04-28 | 2018-04-28 | A kind of open-cut tunnel structure in upper and lower level overlapping railway line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820631898.6U CN208266605U (en) | 2018-04-28 | 2018-04-28 | A kind of open-cut tunnel structure in upper and lower level overlapping railway line |
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| Publication Number | Publication Date |
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| CN208266605U true CN208266605U (en) | 2018-12-21 |
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| CN201820631898.6U Active CN208266605U (en) | 2018-04-28 | 2018-04-28 | A kind of open-cut tunnel structure in upper and lower level overlapping railway line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425296A (en) * | 2018-04-28 | 2018-08-21 | 中铁二院重庆勘察设计研究院有限责任公司 | A kind of open-cut tunnel structure in levels overlapping railway line |
-
2018
- 2018-04-28 CN CN201820631898.6U patent/CN208266605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425296A (en) * | 2018-04-28 | 2018-08-21 | 中铁二院重庆勘察设计研究院有限责任公司 | A kind of open-cut tunnel structure in levels overlapping railway line |
| CN108425296B (en) * | 2018-04-28 | 2024-04-05 | 中铁二院重庆勘察设计研究院有限责任公司 | Open cut tunnel structure for upper and lower layer overlapped railway lines |
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