CN219342899U

CN219342899U - Protective shed tunnel

Info

Publication number: CN219342899U
Application number: CN202320056139.2U
Authority: CN
Inventors: 胡玉林; 吴小波; 丁祥; 罗章波; 谌启发; 郭庆昊; 于春; 晏伟光; 杨中正; 董云生
Original assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Current assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-07-14
Anticipated expiration: 2033-01-09

Abstract

The application relates to the technical field of falling rock impact protection, in particular to a protection shed tunnel, which is characterized in that a concrete foundation is adopted, and upright posts and longitudinal beams are arranged on the concrete foundation, so that the concrete foundation is beneficial to ensuring the stability of the protection shed tunnel foundation, the first direction along which the side part is arranged is the extending direction of a railway or a highway, and the influence on the traffic of a road is relatively small; the non-metal corrugated plate is adopted for the ceiling part and is fixed through the arched girder, so that corrosion can be prevented to a certain extent due to the non-metal corrugated plate, the insulating property of the ceiling part can be guaranteed, maintenance is facilitated, and meanwhile, the ceiling part is easy to build, and the construction period is reduced.

Description

Protective shed tunnel

Technical Field

The application relates to the technical field of falling rock impact protection, in particular to a protection shed tunnel.

Background

Dangerous rock falling is a common bad geological phenomenon, has the remarkable characteristics of wide distribution range, strong burst property and the like, and forms a serious threat to engineering construction and human activity safety. Because of the construction requirements of some railways and highways, the railways and highways need to traverse difficult mountainous areas, and therefore, the railways and the highways are inevitably affected by dangerous rock fall; in addition, some electric high-voltage lines are crossed with the railway, so that the railway operation safety is also required to be protected in order to prevent the high-voltage lines from being broken and falling, and the protection measures are adopted, and shed tunnels are adopted for realizing the protection. Shed tunnel is a favorable defense line applied above railways and highways to prevent dangerous rock falling and falling. The traditional protection shed tunnel is mainly a reinforced concrete shed tunnel, and is provided with open cut tunnel type, frame type, cantilever type and the like, a reinforced concrete shed tunnel foundation is generally arranged on the ground, a filled soil layer is used as a buffer layer of falling rocks so as to reduce impact force on a structure, but the cast-in-situ reinforced concrete shed tunnel needs to be cast by binding reinforcing steel bars on site and erecting templates, the construction is completed by removing the templates after maintenance, the construction period is relatively long, more operators are needed, and the construction interference period to an operation line is long. In addition, novel shed tunnels such as corrugated steel plate shed tunnels, steel frame shed tunnels, steel-concrete combined shed tunnels and light steel flexible shed tunnels also appear, but the steel shed tunnels are adopted, so that maintenance such as electricity prevention, corrosion prevention and the like needs to be carried out regularly, and the problem of relatively large workload exists.

Disclosure of Invention

The embodiment of the application provides a protection shed tunnel to solve the problem that current reinforced concrete shed tunnel construction period is long and steel shed tunnel needs to regularly prevent maintenance such as electricity, anticorrosion.

In order to achieve the above purpose, the present application provides the following technical solutions:

the embodiment of the application provides a protection shed tunnel, it includes:

the side part is configured to be arranged along a first direction and comprises a concrete foundation, a plurality of upright posts arranged on the concrete foundation and longitudinal beams fixed at the tops of the upright posts, the length direction of the longitudinal beams is parallel to the first direction, and the upright posts are distributed at intervals along the first direction; and

the roof portion, the roof portion includes non-metal buckled plate and arched girder, the tip of arched girder with longeron fixed connection, non-metal buckled plate with arched girder fixed connection.

In some embodiments, the ceiling portion further comprises a sandwich composite panel and a waterproof layer; the sandwich composite board is positioned on the upper surface of the nonmetal corrugated board, and the waterproof layer is positioned on the upper surface of the sandwich composite board.

In some embodiments, the sandwich composite panel comprises a polymethacrylimide foam layer and two basalt fiber resin-based composite material layers, wherein the two basalt fiber resin-based composite material layers are respectively positioned on two opposite surfaces of the polymethacrylimide foam layer.

In some embodiments, a flange is fixed around the nonmetal corrugated plate; the non-metal corrugated plate is made of basalt fiber reinforced plastic.

In some embodiments, the protection shed tunnel further comprises a longitudinal support, wherein the longitudinal support is connected between two adjacent upright posts, and the longitudinal support is positioned below the longitudinal beam.

In some embodiments, the arched beams are i-section structures.

In some embodiments, the arched girder is made of basalt fiber reinforced plastic.

In some embodiments, the top of the stringers has a groove in which the ends of the arches are secured.

In some embodiments, the protection shed tunnel further comprises a transverse support, the length direction of the transverse support is perpendicular to the first direction, and the end portion of the transverse support is fixedly connected with the upright post.

In some embodiments, the upright and the stringer are each a reinforced concrete structure.

Compared with the prior art, the protective shed tunnel provided by the embodiment of the application has the following technical effects:

according to the protection shed tunnel provided by the embodiment of the application, the concrete foundation is adopted, and the upright posts and the longitudinal beams are arranged on the concrete foundation, so that the concrete foundation is facilitated to ensure the stability of the protection shed tunnel foundation, and the first direction along which the side parts are positioned is the extending direction of a railway or a highway, so that the influence on the traffic of the road is relatively small; the non-metal corrugated plate is adopted for the ceiling part and is fixed through the arched girder, so that corrosion can be prevented to a certain extent due to the non-metal corrugated plate, the insulating property of the ceiling part can be guaranteed, maintenance is facilitated, and meanwhile, the ceiling part is easy to build, and the construction period is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic cross-sectional view of a protected shed tunnel in an embodiment of the present application;

FIG. 2 is a schematic view of a longitudinal section of a protected shed tunnel in an embodiment of the present application;

FIG. 3 is a schematic longitudinal cross-sectional view of a ceiling portion in an embodiment of the present application;

FIG. 4 is a schematic view of an assembled non-metallic corrugated plate and flange in an embodiment of the present application;

fig. 5 is a schematic cross-sectional view of a sandwich composite panel in an embodiment of the present application.

The figures are marked as follows:

1. a concrete foundation; 2. a column; 3. a longitudinal beam; 4. a longitudinal support; 5. a transverse support; 6. arched beams; 7. a non-metallic corrugated plate; 16. a chemical bolt; 8. sandwich composite board; 9. a waterproof layer; 10. a first bolt hole; 11. a second bolt hole; 12. basalt fiber resin matrix composite material layers; 13. a polymethacrylimide foam layer; 14. a plug; 15. a slot; 16. a chemical stud; 17. a high strength bolt; 18. a ceiling part.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

As shown in connection with fig. 1 and 2, in one or more embodiments, the present disclosure provides a protective shed tunnel for protecting a dangerous rock fall or a high voltage power cable, the protective shed tunnel comprising: side portions and a ceiling portion 18; the side part is configured to be arranged along a first direction, the side part comprises a concrete foundation 1, a plurality of upright posts 2 arranged on the concrete foundation 1 and longitudinal beams 3 fixed on the tops of the upright posts 2, the length direction of the longitudinal beams 3 is parallel to the first direction, and the upright posts 2 are distributed at intervals along the first direction; the ceiling portion 18 includes non-metal corrugated plate 7 and arched girder 6, and the tip and the longeron 3 fixed connection of arched girder 6, non-metal corrugated plate 7 and arched girder 6 fixed connection.

According to the protection shed tunnel provided by the embodiment of the application, the concrete foundation 1 is adopted, and the upright posts 2 and the longitudinal beams 3 are arranged on the concrete foundation 1, so that the concrete foundation 1 is beneficial to ensuring the stability of the foundation of the protection shed tunnel, and the first direction along which the side part is arranged is the extending direction of a railway or a highway, so that the influence on the traffic of the road is relatively small; the roof portion 18 is fixed by the arched beams 6 through the nonmetal corrugated plates 7, so that corrosion of the nonmetal corrugated plates 7 can be reduced to a certain extent, insulation performance of the roof portion 18 can be improved, maintenance is facilitated, and meanwhile, the roof portion 18 is easy to build compared with a reinforced concrete shed tunnel, and construction period is shortened.

In some embodiments, the side portions extend along the length of the railway or road, the first direction being parallel to the length of the railway or road. The number of the side parts is two, and the two side parts are respectively positioned at two sides of the railway or the highway in the length direction. The number of the concrete foundations 1 in each side part is multiple, and the concrete foundations 1 are distributed at intervals along the first direction, so that quick construction is facilitated. The concrete foundation 1 is in the form of an enlarged foundation or pile foundation, and the concrete choice can be determined through calculation and analysis according to geological conditions. In one embodiment, the concrete foundation 1 is a reinforced concrete foundation 1.

Referring to fig. 1, in some embodiments, the upright 2 is a reinforced concrete structure, which is made in the form of in-situ casting, which facilitates the production; and in the first direction, connecting longitudinal beams 3 between two adjacent upright posts 2, wherein the longitudinal beams 3 are of reinforced concrete structures, and pouring in situ is performed by adopting reinforced concrete. The top of the stringers 3 has a recess in which the ends of the arched girders 6 are fixed, in one embodiment the recess is a U-shaped groove, the longitudinal direction of which is parallel to the first direction, which facilitates the installation of a plurality of arched girders 6.

In some embodiments, the arched beams 6 are arched, or arc-shaped, which may facilitate improved structural stability of the ceiling portion 18. One end of the arched girder 6 is connected to the longitudinal girder 3 on one side portion, and the other end of the arched girder 6 is connected to the longitudinal girder 3 on the other side portion, i.e., the arched girder 6 is arranged in a direction perpendicular to the first direction, or, in other words, the arched girder 6 is arranged in a width direction of a railway or a road.

As shown in connection with fig. 1 and 2, in some embodiments, the protection shed tunnel further includes a longitudinal support 4, where the longitudinal support 4 is connected between two adjacent posts 2, and the longitudinal support 4 is located below the stringers 3. The stability between the two uprights 2 is advantageously ensured by the longitudinal supports 4. In one embodiment, the longitudinal support 4 is fixed between two uprights 2 arranged along a first direction, that is to say, in each lateral portion, the longitudinal support 4 has a length direction parallel to the first direction; the longitudinal support 4 is a reinforced concrete structure, and is cast in situ by adopting reinforced concrete, and is cast simultaneously with the upright post 2, and can be used for protecting a bridge structure.

Referring to fig. 1, in some embodiments, the protection shed tunnel further includes a transverse support 5, the length direction of the transverse support 5 is perpendicular to the first direction, and an end of the transverse support 5 is fixedly connected to the upright 2. The length direction of the lateral support 5 is arranged in parallel with the width direction of the railway or road. In one embodiment, one end of the lateral support 5 is connected to the upright 2 in one side portion and the opposite end of the lateral support 5 is connected to the upright 2 in the other side portion. The transverse support 5 is a reinforced concrete structure, and is cast in situ by adopting reinforced concrete, and the reinforced concrete structure and the upright post 2 are cast simultaneously, so that the reinforced concrete structure can be used for protecting a bridge structure. When used for protecting a roadbed section, the transverse support 5 may not be provided.

In some embodiments, the arched beam 6 is an i-shaped profile structure, and the structure of the i-shaped material is adopted to facilitate improving the structural stability of the arched beam 6. The arched girder 6 is made of basalt fiber reinforced plastic, and the nonmetal corrugated plate 7 is made of basalt fiber reinforced plastic. As the basalt fiber reinforced plastic has the characteristics of good mechanical property, corrosion resistance, high temperature resistance, insulation, antimagnetic property, combustion resistance and environmental protection, compared with a reinforced concrete shed tunnel or a steel structure shed tunnel, the basalt fiber reinforced plastic has lighter dead weight and is more convenient for on-site construction and hoisting. In one embodiment, when the protected shed tunnel is used in a tunnel, the shape of the arched beams 6 thereof is contoured to the inner contour of the tunnel; the two ends of the arched girder 6 are respectively fixed with a pad, namely, the pad is positioned between the end of the arched girder 6 and the bottom of the groove, the pad can be made of the same material as the arched girder 6, and other materials, such as rubber, can be adopted for the pad. The backing plate is fixed in the recess at longeron 3 top through chemical bolt 16, adopts cement mortar to backfill closely knit in the recess after the construction is finished, does benefit to anticorrosive like this.

In some embodiments, as shown in fig. 4, flanges are fixed around the non-metallic corrugated plates 7, respectively, so that rapid installation between the non-metallic corrugated plates 7 and the arched beams 6 is facilitated, and the arched beams 6 and the non-metallic corrugated plates 7 are alternately arranged along the first direction. The non-metallic corrugated plate 7 has four sides. In one embodiment, the flange plate is of a plate-shaped structure, two opposite surfaces of the plate-shaped structure are parallel to the thickness direction of the nonmetal corrugated plates 7, and first bolt holes 10 are formed in the flange plate on two sides of the nonmetal corrugated plates 7 parallel to the first direction and are used for realizing connection between two adjacent nonmetal corrugated plates 7 through chemical bolts 16; second bolt holes 11 are formed in the normal plates at the other two sides of the nonmetal corrugated plate 7 and are used for being connected with the arched girder 6 through chemical bolts 16; the nonmetal corrugated plate 7 is a main stressed structure, and the arched beam 6 plays a role of a reinforcing rib, so that the nonmetal corrugated plate 7 and the arched beam 6 are matched to obviously improve the bearing capacity and the impact resistance of the structure. It should be noted that the non-metallic corrugated plate 7 closest to the end of the arched girder 6 is also connected to the groove by a flange, which is connected to the groove by chemical bolts 16, for example.

As shown in connection with fig. 3 and 5, in some embodiments, the ceiling portion 18 further comprises a sandwich composite panel 8 and a waterproof layer 9; the sandwich composite plate 8 is positioned on the upper surface of the nonmetal corrugated plate 7, the waterproof layer 9 is positioned on the upper surface of the sandwich composite plate 8, the sandwich composite plate 8 has good adaptive deformation and buffering performance, and the sandwich composite plate can be used as a buffering layer to effectively alleviate the impact of falling rocks or other external objects on a protection shed tunnel; the waterproof layer 9 can realize waterproof. The waterproof layer 9 comprises a TQF-1 waterproof coiled material layer and a cement mortar protective layer, and the TQF-1 waterproof coiled material layer is positioned below the cement mortar protective layer, so that the waterproof layer has good waterproof performance. In one embodiment, of the two sides of the sandwich composite plate 8 parallel to the first direction, one side has a protruding plug 14 and the other side has a slot 15 in the form of a recess, which facilitates a quick splice between a plurality of sandwich composite plates 8; while the other opposite sides of the sandwich composite plate 8 are fixed to the arched beams 6 by means of high-strength bolts 17, respectively.

Referring to fig. 5, in some embodiments, the sandwich composite panel 8 includes a polymethacrylimide foam layer 13 and two basalt fiber resin-based composite material layers 12, the two basalt fiber resin-based composite material layers 12 being located on opposite surfaces of the polymethacrylimide foam layer, respectively. The basalt fiber resin matrix composite material layer 12 has the characteristics of good mechanical property, corrosion resistance, high temperature resistance, insulation, antimagnetic property, combustion resistance and environmental protection, so that the sandwich composite plate 8 has lighter dead weight and is more convenient for on-site construction and hoisting compared with a concrete structure or a steel structure.

In one or more embodiments, the embodiments of the present application further provide a construction method for protecting shed tunnel structure, including the following steps:

s101, manufacturing concrete foundations 1 of the protection shed tunnel on two sides of an existing line roadbed or a bridge, determining the type of the concrete foundations 1 according to geological conditions, and adopting an open cut enlarged foundation or pile foundation form, wherein the pile foundation form is formed by a bored pile and a bearing platform.

S102, reinforced concrete structures such as upright posts 2, longitudinal supports, transverse supports and longitudinal beams 3 are cast in parts.

S103, forming the arched girder 6 on the ground by a splicing method.

S104, hoisting the assembled arched beams 6 to the top of the longitudinal beam 3, erecting two arched beams 6 at a certain interval, and anchoring the end parts of the arched beams 6 in grooves at the top of the longitudinal beam 3 by adopting chemical bolts 16;

s105, a nonmetal corrugated plate 7 is arranged between the two arch beams 6 which are arranged on the top of the longitudinal beam 3.

And S106, after the arched girder 6 and the nonmetal corrugated plate 7 are installed, the sandwich composite plate is installed.

And S107, constructing to form the waterproof layer 9 after the sandwich composite board is installed.

In summary, the protection shed tunnel provided in at least one embodiment of the present application includes the following advantages:

1. compared with the traditional reinforced concrete shed tunnel or steel structure shed tunnel, the protection shed tunnel formed by combining the reinforced concrete foundation 1, the upright posts 2, the longitudinal beams 3 and the basalt fiber composite material greatly reduces the dead weight of the top and the material consumption, the ceiling part 18 is formed by prefabricating lightweight materials such as basalt fibers, polymethacrylimide foam and the like, and the protection shed tunnel can be assembled and used immediately on a construction site by prefabricating the I-shaped section bars, the nonmetal corrugated plates 7 and the sandwich composite plates 8 in factories. The roof part 18 of the protection shed tunnel is designed into an arch shape, so that the heights of the upright posts 2 on two sides are effectively reduced, the workload of binding reinforcing steel bars and pouring concrete on site is reduced, and the construction speed can be remarkably improved.

2. Compared with a steel structure shed tunnel, the anti-corrosion performance is better, the maintenance workload during operation is greatly reduced, and meanwhile, the concrete foundation 1, the upright posts 2, the longitudinal beams 3 and the like adopt reinforced concrete structures, so that the stability and the durability of the lower structure are reserved.

3. The method has the characteristics of few working procedures, high construction speed, few required operators, strong material performance and high structural reliability, and is more suitable for being applied to the technical fields of dangerous rock falling protection and high-voltage wire protection of operation railways.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A protective shed tunnel, comprising:

2. The protective shed tunnel of claim 1, wherein the ceiling portion further comprises a sandwich composite panel and a waterproof layer; the sandwich composite board is positioned on the upper surface of the nonmetal corrugated board, and the waterproof layer is positioned on the upper surface of the sandwich composite board.

3. The protective shed tunnel of claim 2, wherein the sandwich composite panel comprises a polymethacrylimide foam layer and two basalt fiber resin-based composite material layers, the two basalt fiber resin-based composite material layers being located on opposite surfaces of the polymethacrylimide foam layer.

4. A protective shed tunnel according to any one of claims 1-3, wherein a flange is secured around the non-metallic corrugated plate; the non-metal corrugated plate is made of basalt fiber reinforced plastic.

5. A protective shed tunnel according to any one of claims 1 to 3, further comprising a longitudinal support connected between two adjacent ones of the uprights, the longitudinal support being located below the stringers.

6. A protective shed tunnel according to any one of claims 1-3, wherein the arched beams are i-section structures.

7. The protective shed tunnel of claim 6, wherein the arched beams are basalt fiber reinforced plastic.

8. A protective shed tunnel according to any one of claims 1 to 3, wherein the roof rail has a recess in the top of the rail, the ends of the rail being secured in the recess.

9. A protective shed tunnel according to any one of claims 1-3, further comprising a transverse support, the length of the transverse support being perpendicular to the first direction, and the ends of the transverse support being fixedly connected to the uprights.

10. A protective shed tunnel according to any one of claims 1 to 3, wherein the uprights and stringers are each of reinforced concrete construction.