CN218880941U - Closed open cut tunnel structure - Google Patents
Closed open cut tunnel structure Download PDFInfo
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- CN218880941U CN218880941U CN202221415134.6U CN202221415134U CN218880941U CN 218880941 U CN218880941 U CN 218880941U CN 202221415134 U CN202221415134 U CN 202221415134U CN 218880941 U CN218880941 U CN 218880941U
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Abstract
The utility model provides a closed open cut tunnel structure, including open cut tunnel lining, the open cut tunnel lining includes the concrete foundation, the top of concrete foundation is connected with rag bolt, rag bolt is connected with one limb of angle steel, another limb of angle steel is fixed through the bolt with the bottom of arch ripple steel inside lining, the hunch back of ripple steel inside lining is provided with round reinforced concrete layer, and the bottom of reinforced concrete layer is fixed with the concrete foundation is integrative; the corrugated steel lining is formed by splicing corrugated steel monomers. In the structure of the open cut tunnel lining, the corrugated steel lining is matched with the reinforced concrete layer to form the open cut tunnel lining, so that the construction difficulty is reduced while the overall structural strength of the open cut tunnel is increased; corrugated steel inside lining can be prefabricated, only need hoist and mount the installation in place can, can also replace reinforced concrete layer internal stay template to use to need not dismantle, when reducing the construction degree of difficulty, the reduction of great degree the engineering time.
Description
Technical Field
The utility model belongs to the technical field of tunnel structure engineering, in particular to closed open cut tunnel structure.
Background
The open cut tunnel is a structure for shielding the line constructed by an open cut method. After the building is built, earth and stones are filled at the top and the side surfaces, and most of the appearance of the building is the same as that of the tunnel. The method is mainly used for tunnel portals and deep cutting which are damaged by collapse, falling rocks and debris flow, and specific sections which pass through highways, railways, ditches and the like above lines and are not suitable for overpasses or hidden holes, and is also an effective means for treating diseases after traffic. The open cut tunnel has various forms of symmetrical compression, bias pressure, single compression and the like according to different terrains of the located sections. The top is arched, and the open cut tunnel with the same inner contour line as the tunnel is also called an arch open cut tunnel. In addition, in some half cutting sections, when the side pressure of a hillside is not large or the landform is difficult to arrange the outer wall of the arch open cut tunnel, structures such as beam plates, frames for the outer wall and the like can be used at the top, even a top plate is made into a cantilever structure anchored on the rock wall, the cantilever structure is in a shed shape, and the functions of blocking falling rocks and protecting lines are still achieved. This type is called a shed open cut tunnel, abbreviated as a shed tunnel.
The structural strength of open cut tunnel lining directly determines the strength of the open cut tunnel structure, the existing open cut tunnel lining is of a single reinforced concrete structure, templates need to be disassembled and assembled before and after construction, the construction difficulty is high, and the construction period is long; the concrete lining has poor deformation adaptability, collapse accidents can occur when the concrete lining is stressed too much, the use safety is low, and the operation and the maintenance are difficult.
How to design a closed open cut tunnel structure, how to reduce the construction difficulty of open cut tunnel when increasing open cut tunnel structural strength, practice thrift construction period, become the problem that needs to solve urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a closed open cut tunnel structure for solve the problem that the open cut tunnel construction degree of difficulty is big among the prior art, structural strength is low and construction cycle is long.
In order to achieve the purpose, the utility model provides a closed open cut tunnel structure, which comprises an open cut tunnel lining and a side slope, wherein a plain concrete layer, an original soil backfill layer, a clay water-resisting layer and a greening layer are arranged between the open cut tunnel lining and the side slope from bottom to top in sequence;
the open cut tunnel lining comprises a concrete foundation, wherein the top of the concrete foundation is integrally connected with a foundation bolt, the foundation bolt is connected with one limb of an angle steel, the other limb of the angle steel is fixed with the bottom end of an arched corrugated steel lining through a bolt, the arch back of the corrugated steel lining is provided with a circle of reinforced concrete layer, and the bottom end of the reinforced concrete layer is integrally fixed with the concrete foundation;
the corrugated steel lining is formed by splicing corrugated steel single bodies, and adjacent corrugated steel single bodies are connected through fastening bolts;
by adopting the technical scheme: the concrete foundation, the corrugated steel lining and the reinforced concrete layer form open cut tunnel lining, basic support is provided by the concrete foundation, the corrugated steel lining is matched with the reinforced concrete layer to increase the structural strength of the open cut tunnel lining, so that the overall anti-sliding and anti-overturning capacity and adaptive deformation capacity of the structure are increased, and the overall service life and use safety are increased; the corrugated steel lining plays a role of a template at one side of a reinforced concrete layer after being installed, and the process of removing the template at the inner side is omitted after the reinforced concrete layer is solidified and formed, so that the construction difficulty is reduced; the corrugated steel lining is formed by connecting corrugated steel monomers by using fastening bolts, and only needs to be hoisted to an installation position after prefabrication and molding to install the corrugated steel lining by using bolts, so that the construction difficulty is low, and the construction time is greatly shortened.
In an embodiment of the present invention, the plain concrete layer is formed by solidifying plain concrete, and a top surface of the plain concrete layer is higher than a top end surface of the concrete foundation;
by adopting the technical scheme: the plain concrete layer has certain structural strength, so that the stability of the concrete foundation can be improved; the top surface on plain concrete layer exceeds the top surface on concrete foundation and can provide the hunch foot avris support on ripple steel inside lining and reinforced concrete layer, increases the stability on ripple steel inside lining and reinforced concrete layer, and then increases overall structure's stability.
In an embodiment of the utility model, a drainage layer is arranged between the original soil backfill layer and the plain concrete layer, the drainage layer comprises a gravel layer, and geotextiles are laid on the upper and lower sides of the gravel layer;
by adopting the technical scheme: the drainage layer is arranged between the original soil backfill layer and the plain concrete layer, so that the drainage of the position is enhanced, and various diseases caused by overhigh water content are avoided.
In an embodiment of the present invention, the anchor bolts are integrally disposed inside the concrete foundation, and the anchor bolts are welded to the structural steel bars inside the concrete foundation;
by adopting the technical scheme: through with the inside constructional steel welding of rag bolt and concrete foundation increase the stability that rag bolt and concrete foundation are connected, and then increase the stability behind the corrugated steel inside lining connection.
In an embodiment of the present invention, the angle steel is disposed toward the corrugated steel lining, and the bolting hole site of one limb of the angle steel and the corrugated steel lining and the connecting hole site of the other limb of the angle steel and the anchor bolt are disposed in a staggered manner;
by adopting the technical scheme: the angle steel is arranged towards the corrugated steel lining, so that the position of the corrugated steel lining can be limited, and the stability of the corrugated steel lining after connection is improved; the bolt hole site of an angle steel limb and corrugated steel inside lining and the connection hole site dislocation set of another limb of angle steel and rag bolt are in order to avoid the bolt position conflict to reduce the degree of difficulty of bolt installation.
In an embodiment of the present invention, a circle of waterproof layer is laid outside the reinforced concrete layer;
by adopting the technical scheme: the waterproof performance of the outer side of the reinforced concrete layer is improved, and the long-term effectiveness of waterproof and drainage measures and the durability of the main arch ring structure are ensured.
In an embodiment of the present invention, a sealing gasket is sandwiched between the connecting positions of adjacent corrugated steel single bodies;
by adopting the technical scheme: the sealing performance is improved by clamping the sealing gasket between the corrugated steel monomer joints, and water seepage at the joint positions is avoided.
Advantageous effects
In the structure of the open cut tunnel lining, the corrugated steel lining is matched with the reinforced concrete layer to form the open cut tunnel lining, so that the construction difficulty is reduced while the overall structural strength of the open cut tunnel is increased; the corrugated steel lining can be prefabricated, only needs to be hoisted and installed in place, can replace an inner supporting template of a reinforced concrete layer, does not need to be disassembled, reduces the construction difficulty, and greatly shortens the construction time; the popularization and the application have good economic benefit and social benefit.
Drawings
Fig. 1 is a schematic cross-sectional view of the open cut tunnel structure of the present invention.
Fig. 2 is a schematic cross-sectional view of the fixing angle iron of the present invention.
Fig. 3 is a schematic connection diagram of corrugated steel single bodies according to the present invention.
Fig. 4 is a schematic view of the drainage layer structure of the present invention.
In the figure: 2. side slope; 3. a plain concrete layer; 4. an original soil backfill layer; 5. a clay water barrier; 6. a greening layer; 7. a drainage layer; 71. a crushed stone layer; 72. geotextile; 8. a corrugated steel liner; 81. a corrugated steel single body; 82. fastening a bolt; 83. a gasket; 9. a reinforced concrete layer; 10. a concrete foundation; 11. angle steel; 12. and (7) anchor bolts.
Detailed Description
The following description is given for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present invention.
Please refer to fig. 1 to 4. It should be understood that the structure, proportion, 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 of the present invention, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the proportion relation or the adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.
As shown in fig. 1, the utility model provides a closed open cut tunnel structure, including the open cut tunnel lining, the open cut tunnel lining includes concrete foundation 10, the top of concrete foundation 10 is connected with rag bolt 12, rag bolt 12 is connected with one limb of angle steel 11, another limb of angle steel 11 passes through the bolt fastening with the bottom of arch corrugated steel inside lining 8, the hunch back of corrugated steel inside lining 8 is provided with round reinforced concrete layer 9, and the bottom of reinforced concrete layer 9 is fixed with concrete foundation 10 an organic whole;
the corrugated steel lining 8 is formed by splicing corrugated steel single bodies 81, and adjacent corrugated steel single bodies 81 are connected through fastening bolts 82; by adopting the technical scheme: the concrete foundation 10, the corrugated steel lining 8 and the reinforced concrete layer 9 form an open cut tunnel lining, the concrete foundation 10 provides basic support, the corrugated steel lining 8 is matched with the reinforced concrete layer 9 to increase the structural strength of the open cut tunnel lining, so that the overall anti-sliding, anti-overturning and adaptive deformation capabilities of the structure are increased, and the service life and the use safety of the whole structure are increased; the corrugated steel lining 8 plays a role of a template on one side of the reinforced concrete layer 9 after being installed, and the flow of removing the inner template after the reinforced concrete layer 9 is solidified and formed is omitted, so that the construction difficulty is reduced; the corrugated steel lining 8 is formed by connecting corrugated steel monomers 81 through fastening bolts 82, only needs to be hoisted to an installation position after prefabrication and molding and is installed through bolts, construction difficulty is low, and construction time is greatly shortened.
Further, the anchor bolts 12 are integrally arranged inside the concrete foundation 10, and the anchor bolts 12 are welded with the constructional steel bars inside the concrete foundation 10; by adopting the technical scheme: the stability of the connection of the anchor bolts 12 and the concrete foundation 10 is increased by welding the anchor bolts 12 and the inside constructional steel bars of the concrete foundation 10, thereby increasing the stability of the corrugated steel lining 8 after the connection.
Further, angle steel 11 is arranged towards the corrugated steel lining 8, and a bolting hole site of one limb of the angle steel 11 and the corrugated steel lining 8 and a connecting hole site of the other limb of the angle steel 11 and an anchor bolt 12 are arranged in a staggered manner; by adopting the technical scheme: the angle steel 11 is arranged towards the corrugated steel lining 8, so that the position of the corrugated steel lining 8 can be limited, and the stability of the corrugated steel lining 8 after connection is improved; the bolt hole position of one limb of the angle steel 11 and the corrugated steel lining 8 and the connection hole position of the other limb of the angle steel 11 and the foundation bolt 12 are arranged in a staggered mode, so that the position conflict of bolts is avoided, and the difficulty of bolt installation is reduced.
Furthermore, a circle of waterproof layer is laid outside the reinforced concrete layer 9; by adopting the technical scheme: the waterproof performance of the outer side of the reinforced concrete layer 9 is improved, and the long-term effectiveness of waterproof and drainage measures and the durability of the main arch ring structure are ensured.
Further, a gasket 83 is interposed between the connecting positions of the adjacent corrugated steel single units 81. By adopting the technical scheme: the sealing performance is improved by clamping the sealing gasket 83 between the joints of the corrugated steel single bodies 81, and water seepage at the joint positions is avoided.
The open cut tunnel lining and construction method thereof also comprises a side slope 2, wherein a plain concrete layer 3, an original soil backfill layer 4, a clay water-resisting layer 5 and a greening layer 6 are sequentially arranged between the side slope 2 and the open cut tunnel lining from bottom to top;
further, the plain concrete layer 3 is formed by solidifying plain concrete, and the top surface of the plain concrete layer 3 is higher than the top end surface of the concrete foundation 10; by adopting the technical scheme: the plain concrete layer 3 has certain structural strength, so that the stability of the concrete foundation 10 can be improved; the top surface that plain concrete layer 3's top surface is higher than concrete foundation 10 can provide the arch foot avris of 8 corrugated steel inside linings and reinforced concrete layer 9 and support, increases 8 corrugated steel inside linings and reinforced concrete layer 9's stability, and then increases overall structure's stability.
Further, be provided with drainage blanket 7 between former soil backfill layer 4 and the plain concrete layer 3, drainage blanket 7 includes rubble layer 71, and geotechnological cloth 72 has all been laid to the upper and lower both sides of rubble layer 71. By adopting the technical scheme: a drainage layer 7 is arranged between the original soil backfill layer 4 and the plain concrete layer 3, so that the drainage of the position is enhanced, and various diseases caused by overhigh water content are avoided.
In specific implementation, the original ground is excavated to form a side slope 2; pouring to form a concrete foundation 10 on the undisturbed soil foundation, and simultaneously embedding foundation bolts 12 on the concrete foundation 10 in advance; plain concrete forming plain concrete layers 3 are backfilled between the concrete foundation 10 and the side slopes 2; punching the angle steel 11 to ensure that the punched angle steel 11 is completely aligned with the embedded foundation bolt 12, connecting the punched angle steel 11 with the embedded foundation bolt 12 on site, and fixing the angle steel 11 by matching a nut with the embedded foundation bolt 12; splicing the corrugated steel monomers 81 into a corrugated steel lining 8 by using fastening bolts 82 outside a construction site, hoisting the pre-spliced corrugated steel lining 8 to a concrete foundation 10 by using a hoisting machine, aligning bolt holes at the bottom end of the corrugated steel lining 8 with bolt holes on angle steel 11, connecting the corrugated steel lining 8 with the angle steel 11 by using high-strength bolts, and fixing the corrugated steel lining 8 on the concrete foundation 10; erecting a template at the arch back of the corrugated steel lining 8 after installation, erecting steel bars and pouring concrete, and forming a reinforced concrete layer 9 after consolidation; laying waterproof cloth on the outer surface layer of the reinforced concrete layer 9; plain concrete is backfilled between the reinforced concrete layer 9 and the side slope 2 to a position higher than the top surface of the concrete foundation 10; laying geotextile 72 on the top of the plain concrete layer 3, then laying a gravel layer 71 on the geotextile 72, and finally laying a layer of geotextile 72 on the gravel layer 71; backfilling the original soil to form an original soil backfill layer 4, covering clay on the original soil backfill layer 4 to form a clay water-resisting layer 5, and finally planting greening plants on the clay water-resisting layer 5 to form a greening layer 6 to finish construction.
In summary, the utility model provides a closed open cut tunnel structure, which adopts the corrugated steel lining 8 and the reinforced concrete layer 9 to form open cut tunnel lining, thus reducing the construction difficulty while increasing the overall structural strength of the open cut tunnel; the corrugated steel lining 8 can be prefabricated, only needs to be hoisted in place for installation, can replace an inner supporting template of the reinforced concrete layer 9, does not need to be disassembled, reduces the construction difficulty and greatly shortens the construction time; 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 shall be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a closed open cut tunnel structure, includes open cut tunnel lining and side slope (2), its characterized in that: a plain concrete layer (3), an original soil backfill layer (4), a clay water-resisting layer (5) and a greening layer (6) are sequentially arranged between the open cut tunnel lining and the side slope (2) from bottom to top;
the open cut tunnel lining comprises a concrete foundation (10), the top of the concrete foundation (10) is connected with foundation bolts (12), the foundation bolts (12) are connected with one limb of angle steel (11), the other limb of the angle steel (11) is fixed with the bottom end of an arched corrugated steel lining (8) through bolts, a circle of reinforced concrete layer (9) is arranged on the arch back of the corrugated steel lining (8), and the bottom end of the reinforced concrete layer (9) is integrally fixed with the concrete foundation (10);
the corrugated steel lining (8) is formed by splicing corrugated steel single bodies (81), and the adjacent corrugated steel single bodies (81) are connected through fastening bolts (82).
2. A closed-type open cut tunnel structure according to claim 1, wherein: the plain concrete layer (3) is formed by solidifying plain concrete, and the top surface of the plain concrete layer (3) is higher than the top end surface of the concrete foundation (10).
3. A closed-type open cut tunnel structure according to claim 1, wherein: be provided with drainage blanket (7) between former soil backfill layer (4) and plain concrete layer (3), drainage blanket (7) include rubble layer (71), geotechnological cloth (72) have all been laid to the upper and lower both sides of rubble layer (71).
4. A closed-type open-cut tunnel structure according to claim 1, wherein: the foundation bolts (12) are integrally arranged inside the concrete foundation (10), and the foundation bolts (12) are welded with the structural steel bars inside the concrete foundation (10).
5. A closed-type open cut tunnel structure according to claim 1, wherein: the angle steel (11) are arranged towards the corrugated steel lining (8), and one limb of the angle steel (11) and the bolting hole site of the corrugated steel lining (8) and the connecting hole site of the other limb of the angle steel (11) and the foundation bolt (12) are arranged in a staggered mode.
6. A closed-type open cut tunnel structure according to claim 1, wherein: and a circle of waterproof layer is laid on the outer side of the reinforced concrete layer (9).
7. A closed-type open cut tunnel structure according to claim 1, wherein: and a sealing gasket (83) is arranged between the connecting positions of the adjacent corrugated steel single bodies (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415134.6U CN218880941U (en) | 2022-06-08 | 2022-06-08 | Closed open cut tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221415134.6U CN218880941U (en) | 2022-06-08 | 2022-06-08 | Closed open cut tunnel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218880941U true CN218880941U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221415134.6U Active CN218880941U (en) | 2022-06-08 | 2022-06-08 | Closed open cut tunnel structure |
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| Country | Link |
|---|---|
| CN (1) | CN218880941U (en) |
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2022
- 2022-06-08 CN CN202221415134.6U patent/CN218880941U/en active Active
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