CN218716822U - A supporting construction for highway tunnel - Google Patents
A supporting construction for highway tunnel Download PDFInfo
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- CN218716822U CN218716822U CN202221415120.4U CN202221415120U CN218716822U CN 218716822 U CN218716822 U CN 218716822U CN 202221415120 U CN202221415120 U CN 202221415120U CN 218716822 U CN218716822 U CN 218716822U
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- corrugated steel
- inner lining
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Abstract
The utility model provides a supporting structure for a highway tunnel, which comprises an inner lining, I-shaped steel, a corrugated steel layer, a drainage blind pipe and a concrete reinforcing layer; the inner lining is formed by spraying concrete on the surrounding rock surface of the tunnel and solidifying the concrete; the I-shaped steel is fixed in the inner lining and extends out of the inner side wall of the inner lining; the corrugated steel layer is abutted against the I-shaped steel, and a grouting space is formed between the corrugated steel layer and the inner lining; the drainage blind pipe is annularly connected to the inner side wall of the inner lining and is communicated with the arch foot drainage pipe; the concrete reinforcing layer is formed by consolidating slurry injected into the grouting space. In the structure of the utility model, the corrugated steel and concrete combined structure is adopted to replace a two-lining structure, the corrugated steel can be pre-assembled, and the construction time is greatly reduced; the corrugated steel and concrete combined structure can ensure the safety and reliability of actual engineering and increase the construction efficiency of tunnel support.
Description
Technical Field
The utility model belongs to the technical field of highway tunnel engineering, in particular to a supporting construction for highway tunnel.
Background
When road construction is carried out, a plurality of related tunnel engineering constructions can be involved, and in the tunnel construction, tunnel support construction is one of important component links and is a powerful guarantee for ensuring the safety of the tunnel construction.
The existing highway tunnel supporting structure is mainly a two-lining structure taking concrete as a main part, and although the supporting structure can play a role in supporting after forming, the template needs to be installed and removed before and after forming, so that a large amount of construction time is undoubtedly wasted.
How to design a supporting construction for highway tunnel, how to accomplish quick economic effectual tunnel and strut under the prerequisite of guaranteeing safe construction, become the problem that the solution is badly needed.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcoming of prior art, the utility model aims to provide a supporting construction for highway tunnel for solve among the prior art problem that tunnel support construction security is low and the efficiency of construction is low.
In order to achieve the purpose, the utility model provides a supporting structure for a highway tunnel, which comprises an inner lining, I-shaped steel, a corrugated steel layer, a drainage blind pipe and a concrete reinforcing layer;
the inner lining is formed by spraying concrete on the surrounding rock surface of the tunnel and solidifying the concrete;
the I-shaped steel is fixed in the inner lining and extends out of the inner side wall of the inner lining;
the corrugated steel layer is abutted against the I-shaped steel, and a grouting space is formed between the corrugated steel layer and the inner lining;
the drainage blind pipe is annularly connected to the inner side wall of the inner lining and is communicated with the arch foot drainage pipe;
the concrete reinforcing layer is formed by consolidating slurry injected into the grouting space;
by adopting the technical scheme: spraying concrete on the tunnel surrounding rock surface to be consolidated to form an inner lining, simultaneously consolidating I-shaped steel on the inner lining integrally, ensuring a gap between the corrugated steel layer and the inner lining through the support of the I-shaped steel, and then injecting concrete into the gap to form a concrete reinforcing layer, thereby realizing the fixation of the whole supporting structure; the composite structure of the corrugated steel layer and the concrete reinforcing layer is adopted to replace a two-lining structure, and the corrugated steel layer is a prefabricated structure, so that the construction time can be greatly reduced, and the safety construction and the reliability of the whole structure can be ensured; the corrugated steel layer directly forms the surface of the inner layer of the tunnel, and the corrugated shape has certain aesthetic value without additional decoration.
In an embodiment of the utility model, the utility model further comprises a cartridge anchor rod, one end of the cartridge anchor rod is arranged inside the tunnel surrounding rock, the other end of the cartridge anchor rod extends to the inside of the inner lining and is connected with a reinforcing mesh, and the reinforcing mesh is arranged inside the inner lining;
by adopting the technical scheme: the installation position of the reinforcing steel bar net piece is provided by beating the explosive roll anchor rods inside the tunnel surrounding rock, the reinforcing steel bar net piece can be matched to increase the connection strength of the inner lining and the tunnel surrounding rock, and the reliability of the whole structure is guaranteed.
In an embodiment of the present invention, the corrugated steel layer is formed by splicing corrugated steel single bodies, adjacent corrugated steel single bodies are connected by fastening bolts, and a sealing gasket is clamped between adjacent corrugated steel single bodies;
by adopting the technical scheme: the corrugated steel single bodies are connected through the fastening bolts to form a corrugated steel layer, the prefabrication difficulty of the corrugated steel layer is low, and a large amount of working hours can be saved; the sealing gasket clamped between the corrugated steel single bodies can ensure the sealing performance between the corrugated steel single bodies and reduce the possibility of water seepage between the corrugated steel single bodies.
In an embodiment of the present invention, the lower end of the corrugated steel single body, which is oriented towards the upper side, is lapped on the upper end of the corrugated steel single body at the lower side from top to bottom;
by adopting the technical scheme: when the inside infiltration in tunnel, water can flow downwards along supporting construction, and the free lower extreme top-down overlap joint of the free upper end of downside corrugated steel of hoop upside is in this setting in the free upper end of downside corrugated steel, can avoid completely that water oozes between the corrugated steel monomer that is set up by the annular.
In an embodiment of the present invention, the drainage blind pipe is a semicircular double-wall corrugated pipe, and the drainage blind pipe and the inner side wall of the inner lining are sealed to form a drainage channel;
by adopting the technical scheme: the drainage blind pipe and the inner lining form a water passing pipeline, and water can be led to the bottom arch springing water pipe from the pipeline to be discharged in a centralized way.
Advantageous effects
In the structure of the utility model, the corrugated steel and concrete combined structure is adopted to replace a two-lining structure, the corrugated steel can be pre-assembled, and the construction time is greatly reduced; the corrugated steel and concrete combined structure can ensure the safety and reliability of the actual engineering and increase the construction efficiency of tunnel support; the corrugated steel forms the surface of the inner layer of the tunnel, and the corrugated shape of the corrugated steel has certain aesthetic value; the popularization and the application have good economic benefit and social benefit.
Drawings
Fig. 1 is a top view of the standard section ring of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a schematic diagram of the annular lap joint of corrugated steel single bodies of the present invention.
In the figure: 1. lining the inner layer; 2. i-shaped steel; 3. a corrugated steel layer; 4. a drainage blind pipe; 5. a concrete reinforcement layer; 6. a corrugated steel single body; fastening bolts; 8. and a gasket.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 3. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1-3, the utility model provides a supporting structure for a highway tunnel, which comprises an inner lining 1, an i-steel 2, a corrugated steel layer 3, a drainage blind pipe 4, a concrete reinforcing layer 5 and a cartridge anchor rod; by adopting the technical scheme: the inner lining 1, the I-steel 2, the corrugated steel layer 3, the drainage blind pipe 4, the concrete reinforcing layer 5 and the explosive cartridge anchor rod are of a highway tunnel supporting structure.
Further, cartridge stock one end is beaten and is established inside tunnel country rock, and the other end of cartridge stock extends the inside and the reinforcing bar net piece of inlayer lining cutting 1 and is connected, and the reinforcing bar net piece sets up the inside at inlayer lining cutting 1. By adopting the technical scheme: the installation position of the reinforcing mesh is provided by punching the explosive roll anchor rods in the tunnel surrounding rock, and the reinforcing mesh can be matched with the reinforcing mesh to increase the connection strength of the inner lining 1 and the tunnel surrounding rock, so that the reliability of the whole structure is ensured.
The inner lining 1 is formed by concrete sprayed and built on the surrounding rock surface of the tunnel and consolidated. By adopting the technical scheme: the inner lining 1 is formed by spraying, so that the connection strength of the inner lining 1 and the tunnel surrounding rock surface can be ensured.
The I-shaped steel 2 is fixed inside the inner lining 1 and extends out of the inner side wall of the inner lining 1. By adopting the technical scheme: the I-steel 2 is used as a support room and provides a precondition for forming a uniform grouting gap between the corrugated steel layer 3 and the inner lining 1.
The corrugated steel layer 3 is abutted against the I-steel 2, and a grouting space is formed between the corrugated steel layer 3 and the inner lining 1; by adopting the technical scheme: a grouting space is formed between the corrugated steel layer 3 and the inner lining 1, and a premise is provided for forming the concrete reinforcing layer 5 by grouting.
Further, the corrugated steel layer 3 is formed by splicing corrugated steel monomers 6, adjacent corrugated steel monomers 6 are connected through fastening bolts 7, and a sealing gasket 8 is clamped between the adjacent corrugated steel monomers 6; by adopting the technical scheme: the corrugated steel single bodies 6 are connected through the fastening bolts 7 to form the corrugated steel layer 3, the prefabrication difficulty of the corrugated steel layer 3 is low, and a large amount of working hours can be saved; the sealing gasket 8 clamped between the corrugated steel single bodies 6 can ensure the sealing performance between the corrugated steel single bodies 6 and reduce the possibility of water seepage between the corrugated steel single bodies 6.
Further, the lower end of the annular upper corrugated steel single body 6 is lapped on the upper end of the lower corrugated steel single body 6 from top to bottom. By adopting the technical scheme: when the inside infiltration in tunnel, water can flow downwards along supporting construction, and the lower extreme top-down overlap joint of the ripple steel monomer 6 of hoop upside is in this setting of the upper end of downside ripple steel monomer 6, can avoid water to ooze between the ripple steel monomer 6 that sets up by the annular completely.
The drainage blind pipe 4 is annularly connected to the inner side wall of the inner lining 1 and is communicated with the arch foot drainage pipe;
further, the drainage blind pipe 4 is a semicircular double-wall corrugated pipe, and the drainage blind pipe 4 and the inner side wall of the inner lining 1 are sealed to form a drainage channel. By adopting the technical scheme: the drainage blind pipe 4 and the inner lining 1 form a water passing pipeline, and water is led to the bottom arch water pipe from the pipeline to be intensively drained.
The concrete reinforcing layer 5 is formed by consolidating slurry injected into the grouting space. By adopting the technical scheme: the concrete reinforcing layer 5 is formed in the grouting space between the corrugated steel layer 3 and the inner lining 1 through grouting solidification, a combined structure of the corrugated steel layer 3 and the concrete reinforcing layer 5 is adopted to replace a two-lining structure, and the corrugated steel layer 3 is a prefabricated structure, so that the construction time can be greatly reduced, and the safety construction and the reliability of the whole structure can be ensured; the corrugated steel layer 3 directly forms the surface of the inner layer of the tunnel, and the corrugated shape has certain aesthetic value without additional decoration.
When the construction method is specifically implemented, a first step is constructed and excavated by adopting a step method, I-shaped steel 2 is erected and concrete is sprayed on the surface of the surrounding rock of the tunnel, after the concrete sprayed for the first time is solidified, a cartridge anchor rod is sprayed on the concrete sprayed for the first time and is fixed on the surrounding rock of the tunnel, a reinforcing mesh is installed at the front end of the cartridge anchor rod, and then secondary spraying is carried out, so that the reinforcing mesh is integrally sprayed inside the concrete to form an inner lining 1; installing a drainage blind pipe 4 on the inner surface of the inner lining 1 along the annular direction, and communicating the lower end of the drainage blind pipe 4 with an arch foot drainage pipe to complete the arrangement of a drainage system; pre-splicing the corrugated steel monomers 6 into a corrugated steel layer 3 on a construction platform, using mechanical assistance to lift the corrugated steel layer 3 to abut against the I-steel 2 on the inner lining 1, and matching with the inner lining 1 to form a grouting space; arranging sleepers at the bottom of the corrugated steel layer 3 as temporary supports, then excavating a second step, and performing primary support construction; the corrugated steel single bodies 6 are used for replacing sleepers at the bottoms of the corrugated steel layers 3, and the corrugated steel single bodies 6 are connected with the bottoms of the corrugated steel layers 3 through flanges; and grouting the grouting space between the corrugated steel layer 3 and the inner lining 1 from bottom to top until the vault is subjected to grouting, and finally finishing construction after grouting consolidation.
To sum up, the utility model provides a supporting structure for a highway tunnel, which adopts a corrugated steel and concrete combined structure to replace a two-lining structure, the corrugated steel can be pre-assembled, and the construction time is greatly reduced; the corrugated steel and concrete combined structure can ensure the safety and reliability of the actual engineering and increase the construction efficiency of tunnel support; the corrugated steel forms the surface of the inner layer of the tunnel, and the corrugated shape of the corrugated steel has certain aesthetic value; the popularization and the application have good economic benefit and social benefit. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a supporting construction for highway tunnel which characterized in that: comprises an inner lining (1), I-steel (2), a corrugated steel layer (3), a drainage blind pipe (4) and a concrete reinforcing layer (5);
the inner lining (1) is formed by spraying concrete on the surrounding rock surface of the tunnel and solidifying;
the I-shaped steel (2) is fixed in the inner lining (1) and extends out of the inner side wall of the inner lining (1);
the corrugated steel layer (3) is abutted against the I-steel (2), and a grouting space is formed between the corrugated steel layer (3) and the inner lining (1);
the drainage blind pipe (4) is annularly connected to the inner side wall of the inner lining (1) and is communicated with the arch foot drainage pipe;
the concrete reinforcing layer (5) is formed by consolidating slurry injected into the grouting space.
2. A supporting structure for a road tunnel according to claim 1, wherein: still include the explosive cartridge stock, explosive cartridge stock one end is beaten and is established inside tunnel country rock, the other end of explosive cartridge stock extends the inside and the reinforcing bar net piece of inlayer lining cutting (1) and is connected, the reinforcing bar net piece sets up the inside at inlayer lining cutting (1).
3. A supporting structure for a road tunnel according to claim 1, wherein: corrugated steel layer (3) are formed by corrugated steel monomer (6) concatenation, and are adjacent connect through fastening bolt (7) between corrugated steel monomer (6), and are adjacent it is equipped with sealed pad (8) to press from both sides between corrugated steel monomer (6).
4. A supporting structure for a road tunnel according to claim 3, wherein: the lower end of the corrugated steel single body (6) which is arranged towards the upper side is lapped on the upper end of the corrugated steel single body (6) at the lower side from top to bottom.
5. A supporting structure for a road tunnel according to claim 1, wherein: the drainage blind pipe (4) is a semicircular double-wall corrugated pipe, and the drainage blind pipe (4) and the inner side wall of the inner lining (1) are sealed to form a drainage channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415120.4U CN218716822U (en) | 2022-06-08 | 2022-06-08 | A supporting construction for highway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415120.4U CN218716822U (en) | 2022-06-08 | 2022-06-08 | A supporting construction for highway tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218716822U true CN218716822U (en) | 2023-03-24 |
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ID=85607474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221415120.4U Active CN218716822U (en) | 2022-06-08 | 2022-06-08 | A supporting construction for highway tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218716822U (en) |
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2022
- 2022-06-08 CN CN202221415120.4U patent/CN218716822U/en active Active
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