CN111287171A - Tunnel is with super shallow no beam slab bridge structure of burying down-through highway - Google Patents
Tunnel is with super shallow no beam slab bridge structure of burying down-through highway Download PDFInfo
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- CN111287171A CN111287171A CN202010181165.9A CN202010181165A CN111287171A CN 111287171 A CN111287171 A CN 111287171A CN 202010181165 A CN202010181165 A CN 202010181165A CN 111287171 A CN111287171 A CN 111287171A
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- tunnel
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- square pile
- slab bridge
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a tunnel is with wearing no girder plate bridge structure of ultra-shallow road of burying down to guarantee to wear the highway under and normally lead to car and operation safety, and effectively avoid the tunnel work progress the condition that the collapse side appears, interrupt the driving. The tunnel penetrates through a stratum below an existing highway, left square pile foundations and right square pile foundations are arranged on the lower portion of the existing highway outside the two transverse sides of the tunnel lining structure at intervals along the extending direction of the tunnel, left inter-pile tie beams for longitudinally connecting the left square pile foundations are arranged on pile tops of the left square pile foundations, and right inter-pile tie beams for longitudinally connecting the right square pile foundations are arranged on pile tops of the right square pile foundations; the reinforced concrete girder-free slab bridge spans the tunnel lining structure, and two ends of the reinforced concrete girder-free slab bridge are respectively supported on the left side inter-pile tie beam and the right side inter-pile tie beam and are fixedly connected with the left side inter-pile tie beam and the right side inter-pile tie beam.
Description
Technical Field
The invention relates to a tunnel structure, in particular to a girder-free slab bridge structure of an ultra-shallow buried underpass road for a tunnel.
Background
In China, large-scale railway construction is being carried out, because the tunnel is influenced by factors such as terrain, landform, geology, technology, local description and the like in the route selection process, the crossing with the existing operation road and the downward crossing of the road tunnel are difficult to avoid, and the situation is particularly prominent in southwest areas with high mountains and valleys. The tunnel shallow section underpass road is generally divided into open excavation and underground excavation, and the design and construction methods are more complex than the tunnel in a common area no matter open excavation or underground excavation, and the engineering difficulty and the safety risk are correspondingly increased. If a railway tunnel passes through an operating road, the tunnel is orthogonal to the road, the road surface elevation of the road reaches about 1.5m from the shallowest outer edge of the tunnel lining, and the ground surface is covered with artificial filling gravelly soil, so that the vehicle driving is not interrupted in the construction process.
Disclosure of Invention
The invention aims to solve the technical problem of providing a girder-free slab bridge structure of a downward-passing ultra-shallow buried road for a tunnel, so as to ensure normal traffic and operation safety of the downward-passing road and effectively avoid the conditions of collapse and traffic interruption in the tunnel construction process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a girder-free slab bridge structure of an ultra-shallow buried underpass road for a tunnel and a construction method, wherein the tunnel penetrates through the stratum below the existing road, and is characterized in that: a left square pile foundation and a right square pile foundation are respectively arranged outside the two transverse sides of the tunnel lining structure below the existing highway at intervals along the extending direction of the tunnel, a left inter-pile tie beam for longitudinally connecting the left square pile foundations is arranged at the pile top of the left square pile foundation, and a right inter-pile tie beam for longitudinally connecting the right square pile foundations is arranged at the pile top of the right square pile foundation; the reinforced concrete girder-free slab bridge spans the tunnel lining structure, and two ends of the reinforced concrete girder-free slab bridge are respectively supported on the left side inter-pile tie beam and the right side inter-pile tie beam and are fixedly connected with the left side inter-pile tie beam and the right side inter-pile tie beam.
In the stratum between the reinforced concrete girder-free slab bridge and the arch part of the tunnel lining structure, grouting pipes penetrating the road surface of the existing highway are radially arranged above the arch part of the tunnel lining structure at intervals, and slurry is injected into the stratum from each grouting pipe to form a large pipe shed structure.
The invention has the advantages that the risk of running the operating road under the ultra-shallow buried and underground excavated condition in the design and construction can be greatly reduced, and the potential safety hazards of large-area land acquisition, large-area excavation, deep foundation pit operation and foundation pit drainage in the construction are avoided; the method can effectively reduce the project investment, accelerate the project construction progress, reduce the influence on the highway operation, and has good economic benefit and social benefit.
Drawings
The specification includes the following three drawings:
FIG. 1 is a schematic plan view of a girder-free slab bridge structure of an ultra-shallow buried underpass for a tunnel according to the present invention;
FIG. 2 is a schematic cross-sectional view of a girder-free slab bridge structure of an ultra-shallow buried underpass for a tunnel according to the present invention;
the figures show the components and corresponding references: the method comprises the steps of an existing road 10, a tunnel 20, a tunnel lining structure 21, a left square pile foundation 22a, a right square pile foundation 22b, a left inter-pile tie beam 23a, a right inter-pile tie beam 23b, a reinforced concrete girder-free slab bridge 24, a large pipe shed structure 25 and a stratum D.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1 and 2, in the girder-less slab bridge structure of the ultra-shallow buried underpass road for a tunnel according to the present invention, a tunnel 20 penetrates a ground layer D under an existing road 10. Left square pile foundations 22a and right square pile foundations 22b are arranged below the existing road 10 at intervals outside the two transverse sides of the tunnel lining structure 21 along the extending direction of the tunnel 20, left inter-pile tie beams 23a for longitudinally connecting the left square pile foundations 22a are arranged on the pile tops of the left square pile foundations 22a, and right inter-pile tie beams 23b for longitudinally connecting the right square pile foundations 22b are arranged on the pile tops of the right square pile foundations 22 b. The reinforced concrete girder-less slab bridge 24 spans the tunnel lining structure 21, and both ends thereof are respectively supported on the left inter-pile tie beam 23a and the right inter-pile tie beam 23b and fixedly connected therewith to form a complete and integral road surface structure. The left square pile foundation 22a and the right square pile foundation 22b can effectively bear the load of the reinforced concrete girder-free slab bridge 24 and a tunnel top heavy vehicle, and simultaneously reduce the lateral pressure of the rock mass on the side surface of the tunnel lining structure 21 and prevent the lateral surrounding rock of the tunnel 20 from collapsing. The top piles are connected by adopting left side inter-pile tie beams 23a and right side inter-pile tie beams 23b, so that the bearing capacity and stability of the left side square pile foundation 22a and the right side square pile foundation 22b are improved. Therefore, the invention can greatly reduce the risk of running the highway under the ultra-shallow buried and underground excavated during design and construction, and avoid the potential safety hazards of large-area land acquisition, large-area excavation, deep foundation pit operation and foundation pit drainage during construction.
Referring to fig. 2, in order to effectively reinforce the surrounding rocks of the vault and prevent the collapse and roof fall, grouting pipes penetrating the road surface of the existing highway 10 are arranged radially above the arch part of the tunnel lining structure 21 at intervals in the stratum D between the reinforced concrete girder-free slab bridge 24 and the arch part of the tunnel lining structure 21, and slurry is injected into the stratum D from each grouting pipe to form a large pipe shed structure 25.
Referring to fig. 1, generally, the left square pile foundation 22a and the right square pile foundation 22b are disposed at equal intervals along the extending direction of the tunnel 20. The reinforcing bars of the left square pile foundation 22a and the right square pile foundation 22b are fixedly connected with the reinforcing bars of the reinforced concrete girder-free slab bridge 24.
The foregoing is illustrative of the principles of the present invention for a girder-free slab bridge structure for ultra-shallow buried underpass for tunnels, and is not intended to limit the invention to the specific structure and applications shown and described, and it is intended that all modifications and equivalents thereof that may be utilized are within the scope of the claims.
Claims (4)
1. The utility model provides a tunnel buries no girder plate bridge structure of highway under with ultra-shallow, tunnel (20) pass stratum (D) of existing highway (10) below, characterized by: left square pile foundations (22a) and right square pile foundations (22b) are arranged on the outer sides of the two transverse sides of the tunnel lining structure (21) below the existing road (10) at intervals along the extending direction of the tunnel (20), left inter-pile tie beams (23a) for longitudinally connecting the left square pile foundations (22a) are arranged on the pile tops of the left square pile foundations (22a), and right inter-pile tie beams (23b) for longitudinally connecting the right square pile foundations (22b) are arranged on the pile tops of the right square pile foundations (22 b); the reinforced concrete girder-free slab bridge (24) crosses the tunnel lining structure (21), and both ends thereof are respectively supported on the left inter-pile tie beam (23a) and the right inter-pile tie beam (23b) and are fixedly connected with the left inter-pile tie beam and the right inter-pile tie beam.
2. The girder-free slab bridge structure of an ultra-shallow buried underpass for a tunnel according to claim 1, wherein: in a stratum (D) between the reinforced concrete girder-free slab bridge (24) and the arch part of the tunnel lining structure (21), grouting pipes penetrating the pavement of the existing highway (10) are arranged above the arch part of the tunnel lining structure (21) at intervals in the radial direction, and slurry is injected into the stratum (D) from the grouting pipes to form a large pipe shed structure (25).
3. The girder-free slab bridge structure of an ultra-shallow buried underpass for a tunnel according to claim 1, wherein: the left square pile foundation (22a) and the right square pile foundation (22b) are arranged at equal intervals along the extending direction of the tunnel (20).
4. The girder-free slab bridge structure of an ultra-shallow buried underpass for a tunnel according to claim 1, wherein: the reinforcing bars of the left square pile foundation (22a) and the right square pile foundation (22b) are fixedly connected with the reinforcing bars of the reinforced concrete girder-free slab bridge (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010181165.9A CN111287171A (en) | 2020-03-16 | 2020-03-16 | Tunnel is with super shallow no beam slab bridge structure of burying down-through highway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010181165.9A CN111287171A (en) | 2020-03-16 | 2020-03-16 | Tunnel is with super shallow no beam slab bridge structure of burying down-through highway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111287171A true CN111287171A (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010181165.9A Pending CN111287171A (en) | 2020-03-16 | 2020-03-16 | Tunnel is with super shallow no beam slab bridge structure of burying down-through highway |
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| Country | Link |
|---|---|
| CN (1) | CN111287171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508043A (en) * | 2022-02-22 | 2022-05-17 | 广东省冶金建筑设计研究院有限公司 | Arch abutment structure and construction method thereof |
-
2020
- 2020-03-16 CN CN202010181165.9A patent/CN111287171A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508043A (en) * | 2022-02-22 | 2022-05-17 | 广东省冶金建筑设计研究院有限公司 | Arch abutment structure and construction method thereof |
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