CN113373741A

CN113373741A - Pipe-tunnel separated tunnel-vacuum pipeline structure

Info

Publication number: CN113373741A
Application number: CN202010157972.7A
Authority: CN
Inventors: 刘德刚; 毛凯; 赵明; 薄靖龙; 任晓博; 刘骁; 李萍; 查小菲
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2021-09-10

Abstract

The invention provides a pipe-tunnel separated tunnel-vacuum pipeline structure, which comprises: a tunnel; the vacuum pipeline is arranged in the tunnel, and a gap is reserved between the outer wall of the vacuum pipeline and the wall surface of the tunnel; the vacuum pipeline comprises a track beam and a pipeline cover, the track beam is arranged on the lower portion of the pipeline cover, the pipeline cover is connected with the track beam to form a vacuum pipeline body, the vacuum pipeline body is used for providing an air tightness vacuum pipeline cavity for a train, the track beam comprises a first track and a second track, the first track and the second track are arranged in parallel, and the first track and the second track are used for the bidirectional passage of the train. By applying the technical scheme of the invention, the technical problems that the construction of the double-line vacuum pipeline in the tunnel and the maintenance of the pipeline are difficult in the prior art are solved.

Description

Pipe-tunnel separated tunnel-vacuum pipeline structure

Technical Field

The invention relates to the technical field of magnetic suspension vacuum pipeline traffic, in particular to a pipe-tunnel separated tunnel-vacuum pipeline structure.

Background

In order to reduce the air resistance of the vehicle, the vehicle is designed to be closed in a vacuum pipeline to eliminate the air resistance.

In order to facilitate the maintenance of the vacuum pipeline and the escape of people, a gate valve, a backpressure valve and an escape door are required to be arranged on the vacuum pipeline at certain intervals, as shown in fig. 12 and 13. When a train stops at a certain section in a vacuum pipeline for passenger escape or the vacuum pipeline of the certain section is maintained, gate valves at two ends of the section are closed in advance, then a repressing valve arranged on the vacuum pipeline in the section is opened, air is injected into the section of the vacuum pipeline, the atmospheric pressure (called as repressing in the industry) is restored in the section, and after the repressing is finished, an escape door arranged on the section of the vacuum pipeline can be opened for passenger escape or an overhaul worker can enter the vacuum pipeline to carry out the overhaul operation inside the pipeline.

In order to reduce the construction cost of the line, two rails passing in two directions are generally built together side by side, and are called as 'double lines' in the industry. For the vacuum pipeline line, two tracks are built in the same vacuum pipeline, so that the running blocking ratio of the train (the blocking ratio is the ratio of the section area of the train to the section area of the vacuum pipeline) can be reduced, and the reduction of the blocking ratio is favorable for reducing the pneumatic resistance and the pneumatic heating effect of the high-speed running of the train.

When the vacuum pipeline passes through a mountain area or underground, the problem of the structural relationship between the vacuum pipeline and the tunnel can be involved, the mutual structural relationship between the vacuum pipeline and the tunnel is designed improperly, the construction difficulty can be increased, the line construction cost can be increased, and the later maintenance of the line is difficult to implement, so that the service life of the line is shortened.

At present, the vacuum pipeline transportation has not been implemented and applied in an engineering way in the world, and from the technical scheme disclosed by relevant information at home and abroad, the basic characteristic of the vacuum pipeline is that an integral circular pipe structure is adopted, and a double-line track is built at the bottom of the circular pipe, as shown in fig. 14 to 16. In the mountainous area or underground construction, the pipe and the tunnel are designed as one body, that is, the tunnel wall is subjected to airtight treatment with the tunnel wall as a vacuum pipe wall, as shown in fig. 14.

However, the pipe-tunnel integrated double-line vacuum pipe provided in the prior art has many problems, which are described below.

First, construction in tunnels is difficult. The tunnel wall is subjected to airtight treatment and pressure-resistant treatment in two ways, one is that the excavated tunnel wall is subjected to airtight and pressure-resistant treatment directly, and as the mountain or soil is permeable and permeable, and the atmospheric pressure in the vacuum pipeline is basically zero, a pressure difference of atmospheric pressure exists between the inner side and the outer side of the tunnel wall, which is about 10t load per square meter, so that the mode of directly performing airtight and pressure-resistant treatment on the pipeline wall is extremely difficult. The second mode is to lay the whole vacuum pipeline in the excavated tunnel, which well solves the problems of air tightness and pressure resistance of the vacuum pipeline, but the whole vacuum pipeline is difficult to lay and construct in the tunnel, and the line construction cost is greatly increased.

Secondly, a complex pressure valve and an escape door on the pipeline are difficult to arrange. The gate valve interval on the vacuum pipeline is tens kilometers generally, meets the tunnel section and can adjust the mounted position comparatively conveniently, and the interval of complex pressure valve and emergency exits is several kilometers generally, can't adjust the mounted position apart from longer tunnel section, must set up complex pressure valve and emergency exits in the tunnel section, and this kind of structure of pipe tunnel integration must excavate the tunnel separately in order to set up complex pressure valve and emergency exits, as shown in fig. 14-16.

Third, pipeline maintenance is difficult. The pipeline needs regularly to carry out anticorrosive maintenance, and the inboard of the pipeline wall of pipe tunnel integration is maintained comparatively conveniently, and the outside of pipeline wall is direct and rock, soil contact, and rock, soil be ventilative, the lateral surface that can corrode the pipeline wall that permeates water, and the lateral surface of pipeline wall can't be maintained.

Disclosure of Invention

The invention provides a pipe-tunnel separated tunnel-vacuum pipeline structure which can solve the technical problems that a double-line vacuum pipeline is difficult to construct in a tunnel and pipeline maintenance in the prior art.

The invention provides a pipe-tunnel separated tunnel-vacuum pipeline structure, which comprises: a tunnel; the vacuum pipeline is arranged in the tunnel, and a gap is reserved between the outer wall of the vacuum pipeline and the wall surface of the tunnel; the vacuum pipeline comprises a track beam and a pipeline cover, the track beam is arranged on the lower portion of the pipeline cover, the pipeline cover is connected with the track beam to form a vacuum pipeline body, the vacuum pipeline body is used for providing an air tightness vacuum pipeline cavity for a train, the track beam comprises a first track and a second track, the first track and the second track are arranged in parallel, and the first track and the second track are used for the bidirectional passage of the train.

Furthermore, the pipe-tunnel separated tunnel-vacuum pipeline structure further comprises an escape door, an escape channel assembly and a re-pressing valve, wherein the escape door is connected with the escape channel assembly, the escape door is arranged on the side surface of the pipeline cover, the escape channel assembly is arranged between the tunnel and the vacuum pipeline, and the escape channel assembly is used for enabling people in the train to escape from the escape door to the bottom of the tunnel; the complex pressure valve is arranged on the pipeline cover and used for recovering the pressure of the vacuum pipeline.

Further, the vacuum pipeline structure further comprises a pier, the pier is arranged in the tunnel, and the track beam is fixedly arranged on the pier.

Further, the vacuum pipeline still includes first outer covering, and first outer covering sets up in the outside of track roof beam, and first outer covering is used for strengthening the airtight performance of track roof beam and improves the intensity of track roof beam.

Further, the pipeline cover is of an n-shaped structure, the track beam is of a uu-shaped structure and comprises a first side wall, a second side wall, a third side wall, a fourth side wall and a first track bottom structure, the first rail bottom structure is arranged at the bottoms of the first side wall and the second side wall and is respectively connected with the first side wall and the second side wall, the second rail bottom structure is arranged at the bottoms of the third side wall and the fourth side wall and is respectively connected with the third side wall and the fourth side wall, the first rail bottom structure and the second side wall form a first rail, the third side wall, the second rail bottom structure and the fourth side wall form a second rail, and the connection plate is arranged at the upper parts of the second side wall and the third side wall and is respectively connected with the second side wall and the third side wall.

Further, the track beam still includes a plurality of rail end coupling roof beams, and a plurality of rail end coupling roof beams all set up in the bottom of second lateral wall and third lateral wall and respectively with second lateral wall and third lateral wall connection, and a plurality of rail end coupling roof beams set up in order to improve the antitorque commentaries on classics rigidity of track beam along the length direction interval of track beam.

Furthermore, each side wall is provided with a side wall cavity, and the side wall cavities are arranged along the length direction of the track beam; and/or each rail bottom structure is provided with a rail bottom cavity which is arranged along the length direction of the rail beam.

Furthermore, each side wall is provided with a plurality of side wall cavities, the side wall cavities are arranged along the length direction of the track beam, and the side wall cavities are communicated in sequence; each track bottom structure all has a plurality of rail end cavities, and a plurality of rail end cavities all set up along the length direction of track roof beam, and a plurality of rail end cavities are linked together in proper order, and a plurality of rail end cavities are linked together with a plurality of lateral wall cavities.

Furthermore, each side wall is provided with a side wall cavity and a plurality of side wall connecting through holes, the side wall cavity is arranged along the length direction of the track beam, the side wall connecting through holes are arranged at intervals along the length direction of the track beam, and the side wall connecting through holes are communicated with the side wall cavity to realize the communication between the side wall cavity and the air-tight vacuum pipeline cavity; each track bottom structure all has rail end cavity and a plurality of rail end allies oneself with the through-hole, and the length direction setting of rail roof beam is followed to the rail end cavity, and a plurality of rail end allies oneself with the through-hole and sets up along the length direction interval of track roof beam, and a plurality of rail end allies oneself with the through-hole all with the UNICOM of rail end cavity UNICOM in order to realize the UNICOM of rail end cavity and gas tightness vacuum pipeline chamber.

Further, the escape door includes a plurality of first escape door units and a plurality of second escape door units, the plurality of first escape door units are disposed at one side of the duct cap at intervals in a length direction of the duct cap, and the plurality of second escape door units are disposed at the other side of the duct cap at intervals in the length direction of the duct cap.

The technical scheme of the invention provides a pipe-tunnel separated tunnel-vacuum pipeline structure, which is characterized in that a vacuum pipeline is configured into a split vacuum pipeline, when pipeline construction is carried out, a track beam of the split vacuum pipeline is laid at the bottom of the tunnel by using bridging equipment, a walking route of a bridge girder erection machine is naturally formed by a lower track beam, and after the track beam positioned at the lower part of the vacuum pipeline is installed, pipeline covers at the upper part are installed in place one by using the bridge girder erection machine, so that the pipe-tunnel separated tunnel-vacuum pipeline structure is very convenient in engineering construction and low in line construction cost. In addition, gaps are formed between the outer wall of the vacuum pipeline and the wall surface of the tunnel, the gaps are used as air circulation paths during recompression, passenger escape and worker walking channels, the gaps can be used as installation spaces of other equipment, the tunnel does not need to be additionally excavated, and the line construction cost is reduced; moreover, because a gap is reserved between the outer wall of the vacuum pipeline and the wall surface of the tunnel, the gap can be used as a working space for maintenance personnel, and the maintenance construction of the outer surface of the vacuum pipeline is convenient.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIGS. 1 and 2 illustrate cross-sectional views of a tube-tunnel split tunnel-vacuum piping structure provided in accordance with an embodiment of the present invention;

FIG. 3 illustrates a cross-sectional view of a vacuum conduit provided in accordance with an exemplary embodiment of the present invention;

FIG. 4 shows a partial side view of the vacuum conduit provided in FIG. 3;

FIG. 5 illustrates a cross-sectional view of a track beam provided in accordance with an exemplary embodiment of the present invention;

figure 6 shows a cross-sectional view of a track beam provided in accordance with a first embodiment of the present invention;

figure 7 shows a cross-sectional view of a track beam provided in accordance with a second embodiment of the present invention;

FIG. 8 shows a cross-sectional view at A-A of the track beam provided in FIG. 7;

FIGS. 9 and 10 show cross-sectional views of a duct cover provided in accordance with a specific embodiment of the present invention;

FIG. 11 illustrates a partial side view of the duct cover provided in FIG. 10;

FIG. 12 is a sectional view showing an integral large circular tube type double-line vacuum pipe provided in the prior art and a gate valve, a pressure-applying valve and an escape door provided thereon;

fig. 13 is a side view illustrating the integrated large circular tube type twin-line vacuum pipe provided in fig. 12 and a gate valve, a complex pressure valve and an escape door provided thereto;

FIG. 14 is a cross-sectional view of a tube-tunnel integrated two-wire vacuum line as provided in the prior art positioned within a tunnel;

FIG. 15 is a sectional view showing an escape door in a tunnel-integrated double-line vacuum piping provided in the prior art;

figure 16 shows a cross-sectional view of the repressurization valve location in a tunnel-integrated dual-line vacuum line as provided in the prior art.

Wherein the figures include the following reference numerals:

10. a tunnel; 20. a vacuum line; 20a, a sidewall cavity; 20b, a rail foot cavity; 20c, a side wall connecting hole; 20d, connecting through holes at the rail bottom; 20e, a cavity communicating hole; 21. a track beam; 211. a first side wall; 211a, an outer side of the first sidewall; 211b, an inner side of the first sidewall; 212. a second side wall; 212a, an outer side of the second side wall; 212b, an inner side of the second sidewall; 213. a third side wall; 213a, the outer side of the third side wall; 213b, the inner side of the third side wall; 214. a fourth side wall; 214a, an outer side of the fourth side wall; 214b, an inner side of the fourth side wall; 215. a first rail base structure; 215a, an upper surface of the first rail base structure; 215b, a lower surface of the first rail base structure; 216. a second track bottom structure; 216a, an upper surface of the second rail base structure; 216b, a lower surface of the second rail substructure; 210a, a first transition surface; 210b, a second transition surface; 210c, a third transition surface; 210d, a fourth transition surface; 210e, a fifth transition surface; 210f, a sixth transition surface; 210g and a seventh transition surface; 210h, an eighth transition surface; 217. a tie plate; 218. the rail bottom is connected with the beam; 21a, a first track; 21b, a second track; 22. a duct cover; 221. the upper half of the pipeline; 222. the lower half part of the pipeline; 23. a first outer envelope; 24. a bolt; 25. sealing tape; 30. an escape door; 31. a first escape door unit; 32. a second escape door unit; 40. an escape passage assembly; 41. a transition pedal; 42. a staircase; 50. a pressure-restoring valve; 60. provided is a bridge pier.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a tube-tunnel separated tunnel-vacuum pipe structure, which includes a tunnel 10 and a vacuum pipe 20, wherein the vacuum pipe 20 is disposed in the tunnel 10, and a gap is formed between an outer wall of the vacuum pipe 20 and a wall surface of the tunnel 10; the vacuum pipe 20 includes a rail beam 21 and a pipe cap 22, the rail beam 21 is disposed at a lower portion of the pipe cap 22, the pipe cap 22 is connected to the rail beam 21 to form a vacuum pipe body for providing an airtight vacuum pipe cavity for a train, the rail beam 21 includes a first rail 21a and a second rail 21b, the first rail 21a and the second rail 21b are disposed in parallel, and the first rail 21a and the second rail 21b are for bidirectional passage of the train.

By applying the configuration mode, the pipe-tunnel separated tunnel-vacuum pipeline structure is provided, the vacuum pipeline is configured into the split vacuum pipeline, when pipeline construction is carried out, the track beam of the split vacuum pipeline is laid at the bottom of the tunnel by using the bridging equipment, the track beam at the lower part naturally forms a walking route of the bridging machine, and the pipeline covers at the upper part are installed in place one by using the bridging machine after the track beam at the lower part of the vacuum pipeline is installed, so that the engineering construction is very convenient, and the line construction cost is low. In addition, gaps are formed between the outer wall of the vacuum pipeline and the wall surface of the tunnel, the gaps are used as air circulation paths during recompression, passenger escape and worker walking channels, the gaps can be used as installation spaces of other equipment, the tunnel does not need to be additionally excavated, and the line construction cost is reduced; moreover, because a gap is reserved between the outer wall of the vacuum pipeline and the wall surface of the tunnel, the gap can be used as a working space for maintenance personnel, and the maintenance construction of the outer surface of the vacuum pipeline is convenient.

Further, in the present invention, in order to facilitate passengers to escape and service the passengers when the vacuum pipe or the train has a fault, the pipe-tunnel separated tunnel-vacuum pipe structure may be configured to further include an escape door 30, an escape passage assembly 40 and a repressurization valve 50, the escape door 30 is connected to the escape passage assembly 40, the escape door 30 is disposed at a side of the pipe cover 22, the escape passage assembly 40 is disposed between the tunnel 10 and the vacuum pipe 20, and the escape passage assembly 40 is used for allowing the passengers in the train to escape from the escape door 30 to the bottom of the tunnel 10; a backpressure valve 50 is provided on the duct cap 22, and the backpressure valve 50 is used for pressure recovery of the vacuum duct 20.

By applying the configuration mode, the escape door and the backpressure valve are arranged on the pipeline cover, when the vacuum pipeline or the train breaks down, external air is injected into the section of the vacuum pipeline through the backpressure valve, the atmospheric pressure is recovered to the section, and after the backpressure is finished, the escape door arranged on the section of the vacuum pipeline can be opened to escape passengers, or the passengers can enter a maintainer to carry out maintenance operation inside the pipeline; through the arrangement of the escape passage component, the escape passage component provides an escape path from the escape door to the bottom surface of the tunnel, and the escape path can be used as an access point for maintainers to enter and exit the vacuum pipeline from the tunnel. In the invention, because a gap is reserved between the outer wall of the vacuum pipeline and the wall surface of the tunnel, the gap can be used as an installation space of the pressure recovery valve and the escape door, and meanwhile, the gap can also be used as a flow path of air during pressure recovery, so that the tunnel does not need to be dug additionally, and the line construction cost is reduced.

Further, in the present invention, as shown in fig. 1 and 2, in order to facilitate installation of the rail girder and inspection and maintenance of the bottom of the rail girder, the vacuum duct structure may be configured to further include a pier 60, the pier 60 is disposed in the tunnel 10, and the rail girder 21 is fixedly disposed on the pier 60.

In an embodiment of the present invention, the tunnel 10 is excavated by a conventional construction method according to the sectional size of the double-line vacuum pipe 20, the sectional size of the tunnel 10 is slightly larger than the size of the vacuum pipe 20, and the wall surface of the tunnel 10 is also subjected to various treatments such as waterproofing, etc. according to a conventional method. Then, the lower track beam 21 of the split vacuum pipeline is laid on a pier at the bottom of the tunnel by using bridging equipment, the lower track beam 21 naturally forms a walking route of the bridge girder erection machine, and then the upper pipeline covers 22 are installed in place one by using the bridging equipment. The escape door 30 and the complex pressure valve 50 are disposed on the duct cover 22, the escape passage assembly 40 is disposed between the tunnel 10 and the vacuum duct 20, the escape passage assembly 40 includes a transition step 41 and a staircase 42, and passengers in the train can escape to the bottom of the tunnel 10 through the escape door 30, the transition step 41 and the staircase 42 in sequence when an emergency occurs.

Further, in the present invention, in order to facilitate rapid escape of passengers in a train in the event of an emergency, the escape door 30 may be configured to include a plurality of first escape door units 31 and a plurality of second escape door units 32, the plurality of first escape door units 31 being disposed at intervals along the length direction of the duct cap 22 on one side of the duct cap 22, and the plurality of second escape door units 32 being disposed at intervals along the length direction of the duct cap 22 on the other side of the duct cap 22.

Under this kind of configuration, through set up a plurality of first emergency exits unit and second emergency exits unit respectively in the both sides of pipe cap, can greatly improve passenger's in the car efficiency of fleing, improve the security performance. In addition, as an embodiment of the present invention, the plurality of first escape door units and the plurality of second escape door units may be sequentially arranged in a staggered manner along the projection of the duct cover in the width direction, that is, the first escape door units and the second escape door units are sequentially arranged in a staggered manner along the direction of the vacuum duct, so that the number of escape doors on the escape duct may be reduced, and the air tightness of the vacuum duct may be ensured. As another embodiment of the present invention, a plurality of first escape door units 31 may be disposed in one-to-one correspondence with a plurality of second escape door units 32 along the direction of the vacuum duct.

Further, in the present invention, in order to enhance the air-tightness of the rail beam and to improve the strength of the rail beam, the vacuum duct 20 may be configured to further include a first outer envelope 23, the first outer envelope 23 being disposed at an outer side of the rail beam 21, the first outer envelope 23 serving to enhance the air-tightness of the rail beam 21 and to improve the strength of the rail beam 21. As an embodiment of the present invention, the first outer sheath 23 and the duct cover 22 may be made of weathering resistant steel, stainless steel, glass fiber composite, carbon fiber composite, or other materials having strength, gas tightness, and corrosion resistance.

Further, in the present invention, as shown in fig. 3 to 11, in order to reduce the construction cost of the vacuum duct, the duct cover 22 may be configured in an n-type structure, the rail beam 21 is a uu-type structure, the rail beam 21 includes a first sidewall 211, a second sidewall 212, a third sidewall 213, a fourth sidewall 214, a first rail bottom structure 215, a second rail bottom structure 216, and a contact plate 217, the first sidewall 211, the second sidewall 212, the third sidewall 213, and the fourth sidewall 214 are parallel to each other, the first rail bottom structure 215 is disposed at the bottom of the first sidewall 211 and the second sidewall 212 and connected to the first sidewall 211 and the second sidewall 212, respectively, the second rail bottom structure 216 is disposed at the bottom of the third sidewall 213 and the fourth sidewall 214 and connected to the third sidewall 213 and the fourth sidewall 214, respectively, the first sidewall 211, the first rail bottom structure 215, and the second sidewall 212 form a first rail 21a, the third sidewall 213, the second rail bottom structure 216, and the fourth sidewall 214 form a second rail 21b, and the contact plate 217 is disposed at upper portions of the second sidewall 212 and the third sidewall 213 and is connected to the second sidewall 212 and the third sidewall 213, respectively.

In addition, in the present invention, in order to increase the force integrity of the uu-type track beam to increase the torsion resistance height of the track beam, the track beam 21 may be configured to further include a plurality of tie-rail beams 218, the plurality of tie-rail beams 218 are disposed at the bottom of the second and

third sidewalls

212 and 213 and connected to the second and

third sidewalls

212 and 213, respectively, and the plurality of tie-rail beams 218 are spaced apart along the length direction of the track beam 21 to increase the torsion resistance rigidity of the track beam 21. As an embodiment of the present invention, the tie-beam 218 may be a welded steel beam or a concrete beam externally wrapped with a second outer wrapping shell, and the second outer wrapping shell may be made of weathering resistant steel, stainless steel, glass fiber composite, carbon fiber composite, or other materials with certain strength, air tightness, and corrosion resistance.

Further, in the present invention, in order to reduce the amount of concrete material used and the cost of the outer clad concrete track beam, each side wall may be configured to have a side wall cavity 20a, and the side wall cavities 20a are disposed along the length direction of the track beam 21; and/or each rail substructure has a rail foot cavity 20b, the rail foot cavity 20b being disposed along the length of the rail beam 21.

As a first embodiment of the present invention, as shown in fig. 6, each of the sidewalls has a sidewall cavity 20a and a plurality of sidewall communication holes 20c, the sidewall cavity 20a is disposed along a length direction of the rail beam 21, the plurality of sidewall communication holes 20c are disposed at intervals along the length direction of the rail beam 21, and the plurality of sidewall communication holes 20c are all communicated with the sidewall cavity 20a to enable communication between the sidewall cavity 20a and the airtight vacuum pipe chamber; each track bottom structure all has rail end cavity 20b and a plurality of rail end allies oneself with through-hole 20d, and rail end cavity 20b sets up along the length direction of track roof beam 21, and a plurality of rail end allies oneself with through-hole 20d and sets up along the length direction interval of track roof beam 21, and a plurality of rail end allies oneself with through-hole 20d and all with the UNICOM of rail end cavity 20b UNICOM in order to realize the UNICOM of rail end cavity 20b and gas tightness vacuum pipe chamber. Under the configuration mode, the side wall cavity can be communicated with the air-tight vacuum pipeline cavity through the side wall connecting through hole, and the rail bottom cavity can be communicated with the air-tight vacuum pipeline cavity through the rail bottom connecting through hole.

As a second embodiment of the present invention, as shown in fig. 7, in consideration of the structural strength and material cost of the rail beam, each side wall may be configured to have a plurality of side wall cavities 20a, the plurality of side wall cavities 20a are arranged along the length direction of the rail beam 21, and the plurality of side wall cavities 20a are sequentially communicated; each rail bottom structure has a plurality of rail bottom cavities 20b, the rail bottom cavities 20b are arranged along the length direction of the rail beam 21, the rail bottom cavities 20b are sequentially communicated, and the rail bottom cavities 20b are communicated with the side wall cavities 20 a.

For further understanding of the present invention, the structure of the tube-tunnel separated tunnel-vacuum pipeline provided by the present invention will be described in detail with reference to fig. 1 to 11.

As shown in fig. 1 to 11, according to an embodiment of the present invention, there is provided a pipe-and-tunnel separated type tunnel-vacuum pipe structure including a tunnel 10, a vacuum pipe 20, an escape door 30, an escape passage assembly 40, a re-pressurizing valve 50, and a pier 60, wherein a gap is provided between an outer wall of the vacuum pipe 20 and a wall surface of the tunnel 10, and the gap can be used for a construction work space of a double-line vacuum pipe, an escape passage of passengers, a maintenance space for workers, and an installation space of the re-pressurizing valve 50 and the escape door 30. The construction process of the tunnel-vacuum pipeline structure is that the tunnel 10 is excavated by adopting a traditional construction method according to the section size requirement of the double-line vacuum pipeline, and the section size of the tunnel 10 is slightly larger than that of the double-line vacuum pipeline. The wall surface of the tunnel 10 is also subjected to various treatments such as waterproofing according to conventional methods. Then, the lower track beam 21 of the split vacuum pipeline is laid at the bottom of the tunnel by using bridging equipment, the lower track beam 21 naturally forms a walking route of the bridge girder erection machine, and then the upper pipeline covers 22 are installed in place one by using the bridging equipment. The installation of the rail beam 21 and the maintenance of the bottom of the rail beam can be facilitated by installing a short pier 60 on the ground of the tunnel 10 to erect the rail beam 21.

If necessary, the tunnel wall is externally expanded at the position where the escape door 30 and the pressure relief valve 50 are installed in the tunnel to facilitate the installation of the components, and transition pedals 31 and stairs 32 are arranged at the position where the escape door 30 is installed to facilitate the use of passengers from an escape opening to the bottom of the tunnel or workers from the tunnel to enter and exit a vacuum pipeline.

The vacuum duct 20 comprises an upper duct cover and a lower two-wire track beam, which are connected by bolts 24 or by welding, as shown in fig. 3 and 4. A sealing tape 25 is provided at the connection portion of the upper duct cap and the lower two-wire rail beam to enhance the sealing performance of the connection between the upper duct cap and the lower rail beam.

The upper pipeline cover is made of weathering resistant steel, stainless steel, glass fiber composite material, carbon fiber composite material or other materials with certain strength, air tightness and corrosion resistance. The lower double-line track beam is made of concrete, in order to enhance the air tightness and strength of the track beam, a first outer casing 23 is arranged on the outer surface of the concrete track beam, and the first outer casing 23 is made of weathering resistant steel, stainless steel, glass fiber composite material, carbon fiber composite material or other materials with certain strength, air tightness and corrosion resistance. To save costs, the thickness of the first outer cladding 23 outside the concrete track beam is 1/5 to 2/3 the thickness of the material used for the upper duct cover.

In order to improve the vertical bending rigidity and the strength of the track beam of the vacuum pipeline and reduce the cost of the track beam, the lower double-line track beam is designed into two u-shaped beams which are arranged side by side, namely a uu-shaped double-line track beam. The track beam 21 comprises a first side wall 211, a second side wall 212, a third side wall 213, a fourth side wall 214, a first track bottom structure 215, a second track bottom structure 216 and a connection plate 217, wherein an outer side surface 211a of the first side wall, an inner side surface 211b of the first side wall, an outer side surface 212a of the second side wall, an inner side surface 212b of the second side wall, an outer side surface 213a of the third side wall, an inner side surface 213b of the third side wall, an outer side surface 214a of the fourth side wall and an inner side surface 214b of the fourth side wall are parallel to each other in this order, an upper surface 215a of the first track bottom structure, a lower surface 215b of the first track bottom structure, an upper surface 216a of the second track bottom structure and a lower surface 216b of the second track bottom structure are also parallel to each other and to the outer side surface 211a of the first side wall, the inner side surface 211b of the first side wall, the outer side surface 212a of the second side wall, the inner side surface 212b of the second side wall, the inner side wall, and the inner side surface 212b of the second side wall, The outer side surface 213a of the third side wall, the inner side surface 213b of the third side wall, the outer side surface 214a of the fourth side wall, and the inner side surface 214b of the fourth side wall are perpendicular to each other. Of course, the first transition surface 210a, the second transition surface 210b, the third transition surface 210c and the fourth transition surface 210d at the connection of the inner surface of the side wall and the inner surface of the rail base, and the fifth transition surface 210e, the sixth transition surface 210f, the seventh transition surface 210g and the eighth transition surface 210h at the connection of the outer surface of the side wall and the outer surface of the rail base can be oblique edges or/and circular arcs.

The first rail bottom structure 215 is disposed at the bottom of the first and

second sidewalls

211 and 212 and connected to the first and

second sidewalls

211 and 212, respectively, the first, first and

second sidewalls

211, 215 and 212 form a u-shaped first rail 21a, the second rail bottom structure 216 is disposed at the bottom of the third and

fourth sidewalls

213 and 214 and connected to the third and

fourth sidewalls

213 and 214, respectively, the third, second and

fourth sidewalls

213, 216 and 214 form a u-shaped second rail 21b, and the connection plate 217 is disposed at the upper portions of the second and

third sidewalls

212 and 213 and connected to the second and

third sidewalls

212 and 213, respectively, to collectively constitute the lower u-shaped rail beam of the present invention.

The rail bottom connecting beams 218 are arranged at the rail bottom positions of the two u-shaped rails at intervals to increase the stress integrity and the torsional rigidity of the u-shaped rail beams, the rail bottom connecting beams 218 can be welded steel beams or concrete beams externally wrapped with a second outer wrapping shell, and the second outer wrapping shell can be made of weather-resistant steel, stainless steel, glass fiber composite materials, carbon fiber composite materials or other materials with certain strength, air tightness and corrosion resistance, and is particularly shown in fig. 6 to 8.

Further, as shown in fig. 6, as the first embodiment of the present invention, each of the first rail base structure 215 and the second rail base structure 216 has one rail base cavity 20b and a plurality of rail base coupling through holes 20d, the plurality of rail base coupling through holes 20d are arranged at intervals along the length direction of the rail beam 21, and the plurality of rail base coupling through holes 20d are each communicated with the rail base cavity 20b to achieve communication between the rail base cavity 20b and the airtight vacuum pipe cavity; the first, second, third and

fourth sidewalls

211, 212, 213 and 214 each have a sidewall cavity 20a and a plurality of sidewall communication holes 20c, the plurality of sidewall communication holes 20c are spaced apart along a length direction of the rail beam 21, and the plurality of sidewall communication holes 20c are communicated with the sidewall cavity 20a to communicate the sidewall cavity 20a with the airtight vacuum duct cavity. The rail bottom cavity 20b is communicated with the side wall cavity 20a through the cavity communicating hole 20e, so that the air circulation area of the vacuum pipeline can be further increased, and the blocking ratio of the train in high-speed operation is reduced.

As shown in fig. 6, as a second embodiment of the present invention, each of the first rail base structure 215 and the second rail base structure 216 has three rail base cavities 20b and a plurality of rail base coupling through holes 20d, each of the first side wall 211, the second side wall 212, the third side wall 213, and the fourth side wall 214 has two side wall cavities 20a and a plurality of side wall coupling through holes 20c, the rail base cavities 20b communicate with the side wall cavities 20a through cavity coupling through holes 20e, the three rail base cavities 20b communicate with each other through cavity coupling through holes 20e, and the two side wall cavities 20a communicate with each other through cavity coupling through holes 20 e.

In the present embodiment, the duct cap 22 is designed to be n-shaped, as shown in fig. 9 and 10, the outside contour and the inside contour of the duct cap both present n-shapes, the duct upper half 221 is circular arc-shaped, and the duct lower half 222 presents two vertical edges. The top at upper portion pipe cover is provided with the complex pressure valve 50 along the length direction interval of vacuum pipe, and the left and right sides at upper portion pipe cover sets up emergency exits 30 along vacuum pipe trend interval, and left and right sides emergency exits can the one-to-one setting, also can the setting of misplacing, preferably for the setting of misplacing, can reduce the quantity of emergency exits on the pipeline of fleing like this, is favorable to guaranteeing the airtight performance of vacuum tube.

In summary, the present invention provides a tube-tunnel separated tunnel-vacuum pipe structure, which has the following advantages compared with the prior art.

First, construction is very convenient. The tunnel-vacuum pipeline structure provided by the invention adopts the traditional construction method to excavate the tunnel according to the section size requirement of the double-line vacuum pipeline, and the section size of the tunnel is slightly larger than the size of the double-line vacuum pipeline so as to facilitate the construction of the pipeline. The wall surface of the tunnel is also subjected to various treatments such as waterproofing and the like according to a conventional method. Then, the lower double-line track beam of the split double-line vacuum pipeline is laid on a pier at the bottom of the tunnel by using bridging equipment, the lower double-line track beam naturally forms a walking route of the bridge girder erection machine, and then the upper pipeline covers are installed in place one by using the bridging equipment, so that the split double-line vacuum pipeline is very convenient for engineering construction and low in line construction cost.

Secondly, certain gaps are reserved between the split type double-line vacuum pipeline and the wall surface of the tunnel, the gaps can be used as a personnel walking channel, the gaps can also be used as installation spaces of the re-pressing valve and the escape door (if necessary, the gaps can be expanded outside the tunnel wall at the installation positions of the re-pressing valve and the escape door to increase the gaps), and meanwhile the gaps also serve as flow paths of air during re-pressing, so that the tunnel does not need to be dug additionally, and the line construction cost is reduced.

Thirdly, a certain gap is reserved between the vacuum pipeline and the wall surface of the tunnel, and the gap can be used as a working space for maintenance personnel, so that the maintenance construction of the outer surface of the vacuum pipeline is facilitated.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tube-tunnel separated tunnel-vacuum pipeline structure, comprising:

a tunnel (10);

the vacuum pipeline (20) is arranged in the tunnel (10), and a gap is reserved between the outer wall of the vacuum pipeline (20) and the wall surface of the tunnel (10); the vacuum pipeline (20) comprises a track beam (21) and a pipeline cover (22), the track beam (21) is arranged at the lower part of the pipeline cover (22), the pipeline cover (22) is connected with the track beam (21) to form a vacuum pipeline body, the vacuum pipeline body is used for providing an air-tight vacuum pipeline cavity for a train, the track beam (21) comprises a first track (21a) and a second track (21b), the first track (21a) and the second track (21b) are arranged in parallel, and the first track (21a) and the second track (21b) are used for the bidirectional passage of the train.

2. The pipe-tunnel separated tunnel-vacuum pipeline structure according to claim 1, further comprising an escape door (30), an escape passage assembly (40) and a re-pressure valve (50), wherein the escape door (30) is connected with the escape passage assembly (40), the escape door (30) is disposed at a side of the pipeline cover (22), the escape passage assembly (40) is disposed between the tunnel (10) and the vacuum pipeline (20), and the escape passage assembly (40) is used for enabling a person in a train to escape from the escape door (30) to the bottom of the tunnel (10); the complex pressure valve (50) is arranged on the pipeline cover (22), and the complex pressure valve (50) is used for performing pressure recovery on the vacuum pipeline (20).

3. The pipe-tunnel separated type tunnel-vacuum pipe structure according to claim 2, further comprising a pier (60), wherein the pier (60) is disposed in the tunnel (10), and the rail beam (21) is fixedly disposed on the pier (60).

4. The tube-tunnel split tunnel-vacuum duct structure according to any one of claims 1 to 3, characterized in that the vacuum duct (20) further comprises a first outer envelope (23), the first outer envelope (23) being arranged outside the rail beam (21), the first outer envelope (23) being used to enhance the air-tightness of the rail beam (21) and to increase the strength of the rail beam (21).

5. The tube-tunnel separated tunnel-vacuum duct structure of claim 4, wherein the duct cover (22) is an n-type structure, the rail beam (21) is a uu-type structure, the rail beam (21) comprises a first sidewall (211), a second sidewall (212), a third sidewall (213), a fourth sidewall (214), a first rail bottom structure (215), a second rail bottom structure (216) and a connection plate (217), the first sidewall (211), the second sidewall (212), the third sidewall (213) and the fourth sidewall (214) are parallel to each other, the first rail bottom structure (215) is disposed at the bottom of the first sidewall (211) and the second sidewall (212) and connected with the first sidewall (211) and the second sidewall (212), respectively, the second rail bottom structure (216) is disposed at the bottom of the third sidewall (213) and the fourth sidewall (214) and connected with the third sidewall (211) and the fourth sidewall (214), respectively A sidewall (213) and the fourth sidewall (214) are connected, the first sidewall (211), the first rail bottom structure (215) and the second sidewall (212) form the first rail (21a), the third sidewall (213), the second rail bottom structure (216) and the fourth sidewall (214) form the second rail (21b), and a coupling plate (217) is disposed on the upper portions of the second sidewall (212) and the third sidewall (213) and connected with the second sidewall (212) and the third sidewall (213), respectively.

6. The tube-tunnel separated tunnel-vacuum pipe structure according to claim 5, wherein the rail beam (21) further comprises a plurality of rail-bottom connecting beams (218), the plurality of rail-bottom connecting beams (218) are disposed at the bottom of the second side wall (212) and the third side wall (213) and connected to the second side wall (212) and the third side wall (213), respectively, and the plurality of rail-bottom connecting beams (218) are disposed at intervals along the length direction of the rail beam (21) to increase the torsional rigidity of the rail beam (21).

7. The tube-tunnel separated tunnel-vacuum pipe structure according to claim 5, wherein each of the sidewalls has a sidewall cavity (20a), the sidewall cavities (20a) being disposed along a length direction of the rail beam (21); and/or each rail substructure has a rail foot cavity (20b), the rail foot cavity (20b) being arranged along the length of the rail beam (21).

8. The pipe-tunnel separated tunnel-vacuum pipe structure of claim 7, wherein each of the side walls has a plurality of side wall cavities (20a), the plurality of side wall cavities (20a) are arranged along the length direction of the rail beam (21), and the plurality of side wall cavities (20a) are sequentially communicated with each other; each rail bottom structure is provided with a plurality of rail bottom cavities (20b), the rail bottom cavities (20b) are arranged along the length direction of the rail beam (21), the rail bottom cavities (20b) are sequentially communicated, and the rail bottom cavities (20b) are communicated with the side wall cavities (20 a).

9. The pipe-tunnel separated tunnel-vacuum pipe structure according to claim 5, wherein each of the sidewalls has a sidewall cavity (20a) and a plurality of sidewall communication holes (20c), the sidewall cavity (20a) is disposed along a length direction of the rail beam (21), the plurality of sidewall communication holes (20c) are disposed at intervals along the length direction of the rail beam (21), and the plurality of sidewall communication holes (20c) are communicated with the sidewall cavity (20a) to communicate the sidewall cavity (20a) with the airtight vacuum pipe cavity; each the track substructure all has rail end cavity (20b) and a plurality of rail end allies oneself with through-hole (20d), rail end cavity (20b) are followed the length direction setting of track roof beam (21), and is a plurality of rail end allies oneself with through-hole (20d) and follows the length direction interval setting of track roof beam (21), and is a plurality of rail end allies oneself with through-hole (20d) all with rail end cavity (20b) UNICOM is in order to realize rail end cavity (20b) with the UNICOM of gas tightness vacuum pipe cavity.

10. The pipe-tunnel separated tunnel-vacuum pipe structure according to claim 5, wherein the escape door (30) includes a plurality of first escape door units (31) and a plurality of second escape door units (32), the plurality of first escape door units (31) are disposed at one side of the pipe cover (22) at intervals in a length direction of the pipe cover (22), and the plurality of second escape door units (32) are disposed at the other side of the pipe cover (22) at intervals in the length direction of the pipe cover (22).