CN111775715A - Ultra-high-speed magnetic suspension transportation system for underground low-vacuum pipeline and construction method thereof - Google Patents
Ultra-high-speed magnetic suspension transportation system for underground low-vacuum pipeline and construction method thereof Download PDFInfo
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- CN111775715A CN111775715A CN202010667998.6A CN202010667998A CN111775715A CN 111775715 A CN111775715 A CN 111775715A CN 202010667998 A CN202010667998 A CN 202010667998A CN 111775715 A CN111775715 A CN 111775715A
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- 239000000725 suspension Substances 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 102
- 238000005339 levitation Methods 0.000 claims abstract description 35
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 9
- 239000003566 sealing material Substances 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- 229920001973 fluoroelastomer Polymers 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 229910052755 nonmetal Inorganic materials 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012173 sealing wax Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/08—Sliding or levitation systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/10—Tunnel systems
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
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Abstract
The invention relates to the technical field of pipeline transportation, in particular to an underground low-vacuum pipeline ultrahigh-speed magnetic levitation traffic system and a construction method thereof. The traffic system comprises a tunnel, a sealing cover, a supporting structure, a track bearing beam and a magnetic suspension track; a lining structure is arranged on the inner wall of the tunnel; the supporting structure is formed on a lining structure at the bottom in the tunnel by pouring reinforced concrete; the sealing cover extends along the length direction of the tunnel, the bottom of the sealing cover is fixedly arranged at the top of the supporting structure, the sealing cover and the supporting structure are sealed through a sealing structure, and an ultra-high-speed magnetic suspension train running space is formed between the sealing cover and the supporting structure; the bottom of the rail bearing beam is fixedly arranged at the top of the inner supporting structure of the sealing cover; the magnetic suspension track is fixedly arranged on the top of the rail bearing beam, and the ultra-high speed magnetic suspension train is used for running along the magnetic suspension track. The traffic system operates in an underground space and can be well suitable for urban areas and mountainous areas.
Description
Technical Field
The application relates to the technical field of pipeline transportation, in particular to an underground low-vacuum pipeline ultrahigh-speed magnetic levitation traffic system and a construction method thereof.
Background
Under the restriction of dense atmospheric environment, the maximum running speed of the current ground rail vehicle is recorded as 603km/h, and researches show that after the running speed of the ground rail vehicle exceeds 500km/h, the resistance generated by air accounts for more than 92% of the total resistance, which greatly exceeds the range capable of running economically, and the caused noise pollution is difficult to treat.
In order to solve the problems, German engineers Hellman Kenpier in 1992 propose a transportation form without air resistance and friction, and the technical principle is that a closed pipeline is vacuumized or partially vacuumized by a vacuum pump, so that vehicles can be driven in the environment, the driving resistance can be greatly reduced, the energy consumption can be effectively reduced, the pneumatic noise can be greatly reduced, and the environment-friendly requirement is met.
Some experiments have been carried out on low-vacuum pipeline traffic at home and abroad, and certain results are accumulated, but the current research is limited in that a low-vacuum pipeline traffic system mostly adopts a structural form that a viaduct is erected on a pier and a beam, so that the problem that the adaptability to urban areas with complicated ground building arrangement and mountainous areas is poor is caused.
Disclosure of Invention
The embodiment of the application provides an underground low-vacuum pipeline ultrahigh-speed magnetic suspension traffic system with good adaptability and a construction method thereof.
According to a first aspect of the embodiments of the present application, there is provided an underground low vacuum pipeline ultrahigh speed magnetic levitation transportation system, which includes a tunnel, a sealing cover, a supporting structure, a rail bearing beam, a magnetic levitation track and an ultrahigh speed magnetic levitation train, wherein:
a lining structure is arranged on the inner wall of the tunnel;
the supporting structure is formed on the lining structure at the bottom in the tunnel by pouring reinforced concrete;
the sealing cover extends along the length direction of the tunnel, the bottom of the sealing cover is fixedly installed at the top of the supporting structure, the sealing cover and the supporting structure are sealed through a sealing structure, and a running space of the ultra-high-speed maglev train is formed between the sealing cover and the supporting structure;
the bottom of the rail bearing beam is fixedly arranged at the top of the supporting structure in the sealing cover;
the magnetic suspension track is fixedly arranged on the top of the rail bearing beam;
the ultra-high speed magnetic suspension train is used for running along the magnetic suspension track.
Preferably, the sealing structure comprises a sealing gasket clamped between the sealing cover and the supporting structure, and a first sealing material for sealing a connecting seam between the sealing cover and the supporting structure.
Preferably, the sealing cover and the supporting structure both adopt a segmented structure;
expansion joints are arranged between the adjacent sealing cover sections and between the adjacent supporting structure sections;
and a sealing strip and a second sealing material for sealing the expansion joint are arranged at each expansion joint.
Preferably, the system further comprises a monitoring terminal connected with signals and a plurality of Pirani vacuum gauges;
the Pirani vacuum gauge is fixedly installed at the inner bottom of the sealing cover and is opposite to the expansion joint, and the Pirani vacuum gauge is used for detecting the air tightness of the expansion joint.
Preferably, the sealing gasket is made of fluororubber, silicone rubber or nitrile rubber;
the sealing strip is made of fluororubber, silicon rubber or nitrile rubber;
the first sealing material and the second sealing material are both vacuum wax sealing, vacuum grease sealing or vacuum mud sealing.
Preferably, the sealing cover is made of at least one of a non-metal material and a metal material.
Preferably, the non-metal is glass or synthetic fiber;
the metal material is steel or alloy material.
Preferably, the top of the support structure is provided with a groove opposite to the seal cover, and the rail bearing beam is fixedly installed in the groove.
Preferably, the cross-sectional shape of the tunnel is horseshoe, circular or rectangular;
the groove is an arc-shaped groove;
the cross section of the sealing cover is in an inverted U shape.
According to a second aspect of the embodiments of the present application, there is provided a construction method of any one of the above technical solutions, where the construction method includes the following steps:
constructing a tunnel, and forming a lining structure on the inner wall of the tunnel;
constructing a supporting structure on a lining structure at the bottom in the tunnel;
fixedly mounting a rail bearing beam on a support structure;
fixedly mounting the magnetic suspension track on a track bearing beam;
the sealing cover is fixedly arranged on the supporting structure, and a low vacuum environment for the running of the ultra-high speed maglev train is formed between the sealing cover and the supporting structure.
By adopting the ultra-high-speed magnetic suspension transportation system with the underground low-vacuum pipeline and the construction method thereof, the following beneficial effects are achieved:
the underground low-vacuum pipeline ultrahigh-speed maglev transportation system is characterized in that a maglev track and a rail bearing beam for running of an ultrahigh-speed maglev train are fixedly arranged in a tunnel, the tunnel is built in an underground space, the rail bearing beam is fixedly arranged in the tunnel through a supporting structure, the underground tunnel can adapt to urban areas and mountainous areas with complicated ground building arrangement, complicated ground buildings arranged in the urban areas can be avoided by building the underground tunnel, the removal cost can be reduced, and the underground low-vacuum pipeline ultrahigh-speed maglev transportation system can be combined with tunnel sections in different forms through the supporting structure; therefore, the ultra-high-speed magnetic suspension transportation system adopting the underground low-vacuum pipeline can be well suitable for urban areas and mountainous areas.
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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic cross-sectional view of a magnetic levitation track of an underground low vacuum pipeline ultra-high speed magnetic levitation transportation system according to an embodiment of the present application;
FIG. 2 is an enlarged, fragmentary, schematic structural view of portion A of the seal between the seal housing and the support structure provided in FIG. 1;
FIG. 3 is a schematic cross-sectional view of another magnetic levitation track of the ultra-high speed magnetic levitation transportation system of the underground low vacuum pipeline according to the embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of another magnetic levitation track of the ultra-high speed magnetic levitation transportation system of the underground low vacuum pipeline in the embodiment of the present application;
fig. 5 is a process flow chart of a construction method of the underground low-vacuum pipeline ultrahigh-speed magnetic levitation transportation system in the embodiment of the application.
Reference numerals:
1-a tunnel; 2-a support structure; 3-sealing the cover; 4-a rail-bearing beam; 5-a magnetic levitation track; 6-ultra-high speed maglev train; 7-running space of the ultra-high speed maglev train; 8-a sealing gasket; 9-a first sealing material; 10-pirani gauge; 11-lining construction; 21-a groove; 22-embedding reinforcing steel bars.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
The embodiment of the application provides an underground low vacuum pipeline hypervelocity magnetic levitation traffic system for underground space, this underground low vacuum pipeline hypervelocity magnetic levitation traffic system includes tunnel 1, bearing structure 2, sealed cowling 3, support rail roof beam 4, magnetic levitation track 5 and hypervelocity magnetic levitation train 6 to the structure of pipe tunnel separation has been adopted, wherein: fig. 1, fig. 3 and fig. 4 respectively illustrate the structural schematic diagram of the cross section of the underground low vacuum pipeline ultra-high speed magnetic levitation transportation system in the underground tunnel 1;
the inner wall of the tunnel 1 is provided with a lining structure 11; the cross section of the tunnel 1 can be horseshoe-shaped, circular or rectangular; the cross-sectional shape of the tunnel 1 in fig. 1 is horseshoe-shaped, the cross-sectional shape of the tunnel 1 in fig. 3 is circular, and the cross-sectional shape of the tunnel 1 in fig. 4 is rectangular;
the supporting structure 2 is formed on a lining structure 11 at the bottom in the tunnel 1 by pouring reinforced concrete; as shown in the structure of fig. 1, the supporting structure 2 is formed on the lining structure 11, and the load of the ultra-high speed maglev train 6 is sequentially transmitted to the lining structure 11, the tunnel 1 and the ground layer through the supporting structure 2, so as to provide a foundation for the ultra-high speed maglev train 6 to run in a low vacuum pipeline; the top of the supporting structure 2 is provided with a groove 21 opposite to the sealing cover 3, and the rail bearing beam 4 is fixedly arranged in the groove 21; the groove 21 may be an arc-shaped groove; as shown in the structures of fig. 1 and 3, the support structure 2 in the magnetic levitation track 5 is provided with an arc-shaped groove 21, and the height dimension of the support structure 2 in the tunnel 1 can be reduced through the arc-shaped groove 21, so that a larger space can be provided for the running of the ultra-high speed magnetic levitation train 6, the size of the tunnel 1 can be reduced, and the construction cost of the tunnel 1 can be reduced; because the supporting structure 2 is formed by pouring reinforced concrete, the supporting structure 2 can be adapted to tunnels 1 in various shapes;
the sealing cover 3 extends along the length direction of the tunnel 1, the bottom of the sealing cover is fixedly arranged at the top of the supporting structure 2, the sealing cover 3 and the supporting structure 2 are sealed through a sealing structure, a running space 7 for the ultra-high speed maglev train is formed between the sealing cover 3 and the supporting structure 2, and a low vacuum environment is arranged in the running space 7 for the ultra-high speed maglev train; sealed cowling 3 is through bottom fixed mounting in bearing structure 2's top, still be provided with seal structure between sealed cowling 3 and the bearing structure 2, can install sealed cowling 3 on bearing structure 2 sealedly through seal structure, thereby form airtight space between sealed cowling 3 and bearing structure 2, can form the service conduit of hypervelocity maglev train 6 after sealing both ends, in order to reduce the air resistance when hypervelocity maglev train 6 moves, can take out into low vacuum in the service conduit, make the interior low vacuum environment that atmospheric pressure is less than standard atmospheric pressure that forms of service conduit, if: the air pressure in the operation pipeline is 0.01-0.3 times of standard atmospheric pressure, so that a low-vacuum pipeline is formed between the sealing cover 3 and the supporting structure 2; when the ultra-high speed maglev train 6 runs in the low vacuum pipeline, the air resistance of the ultra-high speed maglev train 6 during running can be reduced because the air pressure in the low vacuum pipeline is less than the standard atmospheric pressure; the sealing cover 3 is made of at least one of non-metal materials and metal materials, and the non-metal materials can be glass or synthetic fibers; the metal material can be steel or alloy material; as shown in the structures of fig. 1, 3 and 4, the cross section of the sealing cover 3 can be inverted U-shaped, the sealing cover 3 is buckled on the supporting structure 2, and an ultra-high speed maglev train running space 7 is formed between the sealing cover 3 and the supporting structure 2;
the bottom of the rail bearing beam 4 is fixedly arranged at the top of the support structure 2 in the sealing cover 3; as shown in the structure of fig. 1, the rail bearing beam 4 is used for supporting a magnetic levitation track 5 running on an ultra-high speed magnetic levitation train 6 and providing an installation foundation for the magnetic levitation track 5; the bottom of the rail bearing beam 4 is fixedly arranged at the top of the supporting structure 2, and a gap is reserved between the top and the sealing cover 3;
the magnetic suspension track 5 is fixedly arranged at the top of the track bearing beam 4 and is used for supporting the ultra-high speed magnetic suspension train 6 to run, and the ultra-high speed magnetic suspension train 6 is used for running along the magnetic suspension track 5; as shown in the structure of figure 1, the magnetic levitation track 5 is fixedly arranged at the top of the track bearing beam 4, and the normal operation of the ultra-high speed magnetic levitation train 6 is guaranteed.
The ultra-high speed maglev transportation system with the underground low vacuum pipeline is characterized in that a maglev track 5 and a support rail beam 4 of an ultra-high speed maglev train 6 are fixedly arranged in a tunnel 1, the tunnel 1 is built in an underground space, the support rail beam 4 is fixedly arranged in the tunnel 1 through a support structure 2, the underground tunnel 1 can adapt to urban areas and mountainous areas with complicated ground building arrangement, complicated ground buildings arranged in the urban areas can be avoided through building the underground tunnel 1, the removal cost can be reduced, and the support structure 2 can be combined with the sections of the tunnels 1 in different forms; therefore, the ultra-high-speed magnetic suspension transportation system with the underground low-vacuum pipeline runs in an underground space and can be well suitable for urban areas and mountainous areas.
In a particular embodiment, in order to guarantee the hermetic connection between the sealing cap 3 and the supporting structure 2, as shown in the configuration of fig. 1 and 2, the sealing structure comprises a sealing gasket 8 interposed between the sealing cap 3 and the supporting structure 2, and a first sealing material 9 for sealing the connection seam between the sealing cap 3 and the supporting structure 2; the first sealing material 9 may be provided on both sides of the connection of the sealing cap 3 with the support structure 2, or may be provided only on the outer side of the connection of the sealing cap 3 with the support structure 2; the sealing gasket 8 is made of fluororubber, silicon rubber or nitrile rubber; the first sealing material 9 may be vacuum wax, vacuum grease or vacuum mud.
Because be provided with sealed 8 between sealed cowling 3 and bearing structure 2, can seal up the gap between sealed cowling 3 and the bearing structure 2 through the extrusion deformation to sealed 8, still be provided with first sealing material 9 in sealed cowling 3 and bearing structure 2's joint seam department simultaneously, can seal up the small gap that forms between sealed cowling 3 and bearing structure 2 through first sealing material 9, thereby realize the complete sealing between sealed cowling 3 and the bearing structure 2, provide the environmental basis for guaranteeing that superspeed maglev train 6 in the sealed cowling 3 can be for a long time in the low vacuum environment steady operation.
When the bottom of the sealing cover 3 is mounted on the supporting structure 2, embedded bars 22 for fixedly mounting the sealing cover 3 may be disposed on the supporting structure 2, and as shown in the structure of fig. 2, the sealing cover 3 may be fixedly mounted on the embedded bars 22 by fasteners (not shown in the figure).
For convenience of construction, along the extending direction of the magnetic levitation track 5, the sealing cover 3 and the supporting structure 2 may both adopt a segmented structure, that is, the sealing cover 3 may be formed by connecting a plurality of sealing cover 3 segments (not shown in the figure), and the supporting structure 2 may be formed by connecting a plurality of supporting structure 2 segments (not shown in the figure); in order to prevent the structure from being affected by thermal expansion and cold contraction, expansion joints are arranged between adjacent sections of the sealing cover 3 and between adjacent sections of the supporting structure 2; a sealing strip (not shown in the figure) and a second sealing material (not shown in the figure) for sealing the expansion joints are arranged at each expansion joint; the sealing strip can be made of fluororubber, silicon rubber or nitrile rubber; the second sealing material can be vacuum sealing wax, vacuum grease or vacuum sealing mud.
Because the sealed cowling 3 and bearing structure 2 all adopt the segmentation structure, made things convenient for sealed cowling 3 and bearing structure 2's manufacturing and installation, reduced the installation degree of difficulty.
In order to further ensure the low vacuum environment of the stable operation of the ultra-high speed maglev train 6, the ultra-high speed maglev transportation system of the underground low vacuum pipeline further comprises a monitoring terminal and a plurality of Pirani vacuum gauges 10 which are connected by signals; as shown in fig. 2, the pirani vacuum gauge 10 is fixedly installed at the inner bottom of the sealing cover 3 and is disposed opposite to the expansion joint, and the pirani vacuum gauge 10 is used for detecting the air tightness of the expansion joint.
The air tightness of the expansion joint can be detected through a plurality of Pirani vacuum gauges 10 arranged at the inner bottom of the sealing cover 3, and the air tightness of the connecting part of the sealing cover 3 and the supporting structure 2 can also be detected; the detection result of the pirani vacuum gauge 10 is sent to the monitoring terminal, and the detection result of each pirani vacuum gauge 10 can be obtained through the monitoring terminal, so that the sealing performance of the low vacuum pipeline can be monitored, a vacuum pump (not shown in the figure) is started as required to extract and maintain the vacuum degree, and the stable operation of the low vacuum pipeline and the ultrahigh-speed maglev train 6 is ensured.
In addition, the space between the sealing cover 3 and the tunnel 1 can be used as an operation space for overhauling equipment, and can also be used for providing operation spaces for lighting, ventilation, detection, fire fighting, rescue equipment and the like of an underground low-vacuum pipeline ultrahigh-speed magnetic levitation transportation system.
Example two
In addition, an embodiment of the present application further provides a construction method of the ultra-high-speed magnetic levitation transportation system with the underground low-vacuum pipeline in any one of the above embodiments, as shown in the structure of fig. 5, the construction method includes the following steps:
step S100, constructing a tunnel 1, and forming a lining structure 11 on the inner wall of the tunnel 1; in the construction process of the tunnel 1, the construction can be carried out by a mine method, a shield method and an open cut method; the cross-sectional shape of the tunnel 1 may correspond to a horseshoe shape in fig. 1, a circular shape in fig. 3 or a rectangular configuration in fig. 4; the tunnel 1 of circular configuration in figure 3 is suitable for construction by means of shield equipment; the tunnel 1 with the rectangular structure in fig. 4 is suitable for construction through open cut backfill;
step S200, constructing a supporting structure 2 on a lining structure 11 at the bottom in the tunnel 1; the supporting structure 2 can be formed by pouring reinforced concrete, and the supporting structure 2 can be formed in tunnels 1 with cross sections of various shapes by pouring the reinforced concrete;
step S300, fixedly mounting the rail bearing beam 4 on the support structure 2, wherein the rail bearing beam 4 can be of a reinforced concrete structure, namely, the rail bearing beam 4 can also be formed by pouring reinforced concrete; the rail bearing beam 4 and the supporting structure 2 can be cast and molded simultaneously;
step S400, fixedly installing the magnetic levitation track 5 on the track bearing beam 4, so that the ultra-high speed magnetic levitation train 6 can run along the magnetic levitation track 5;
step S500, the sealing cover 3 is fixedly arranged on the supporting structure 2, a low vacuum environment for the ultra-high speed maglev train 6 to run is formed between the sealing cover 3 and the supporting structure 2, and the sealing cover 3 and the supporting structure 2 are sealed through a sealing structure.
When the construction method is adopted to construct and prepare the underground low-vacuum pipeline ultrahigh-speed magnetic suspension traffic system, the whole project is positioned in the underground space, the influence on the ground traffic is small, and the constructed magnetic suspension track 5 is also positioned underground, so that the construction can be facilitated even in urban areas with complicated ground building arrangement, the ground building does not need to be removed, and the construction cost is saved.
While the 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. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. The utility model provides an underground low vacuum pipeline hypervelocity magnetic levitation traffic system which characterized in that, includes tunnel, bearing structure, sealed cowling, support rail roof beam, magnetic levitation track and hypervelocity magnetic levitation train, wherein:
a lining structure is arranged on the inner wall of the tunnel;
the supporting structure is formed on the lining structure at the bottom in the tunnel by pouring reinforced concrete;
the sealing cover extends along the length direction of the tunnel, the bottom of the sealing cover is fixedly installed at the top of the supporting structure, the sealing cover and the supporting structure are sealed through a sealing structure, and a running space of the ultra-high-speed maglev train is formed between the sealing cover and the supporting structure;
the bottom of the rail bearing beam is fixedly arranged at the top of the supporting structure in the sealing cover;
the magnetic suspension track is fixedly arranged on the top of the rail bearing beam;
the ultra-high speed magnetic suspension train is used for running along the magnetic suspension track.
2. The transit system as defined in claim 1, wherein said sealing structure comprises a gasket interposed between said sealing cover and said support structure, and a first sealing material for sealing a joint seam between said sealing cover and said support structure.
3. The transit system as defined in claim 2 wherein, said containment cover and said support structure each adopt a segmented structure;
expansion joints are arranged between the adjacent sealing cover sections and between the adjacent supporting structure sections;
and a sealing strip and a second sealing material for sealing the expansion joint are arranged at each expansion joint.
4. The transit system as claimed in claim 3, further comprising a plurality of pirani vacuum gauges and a monitoring terminal in signal connection;
the Pirani vacuum gauge is fixedly installed at the inner bottom of the sealing cover and is opposite to the expansion joint, and the Pirani vacuum gauge is used for detecting the air tightness of the expansion joint.
5. The transportation system of claim 3 wherein the gasket is made of a fluoro-rubber, a silicone rubber or a nitrile rubber;
the sealing strip is made of fluororubber, silicon rubber or nitrile rubber;
the first sealing material and the second sealing material are both vacuum wax sealing, vacuum grease sealing or vacuum mud sealing.
6. The transit system as defined in claim 1, wherein the sealing cover is made of at least one of a non-metallic material and a metallic material.
7. Traffic system according to claim 6, characterized in that the non-metal is glass or synthetic fibre;
the metal material is steel or alloy material.
8. Traffic system according to any one of claims 1-7, characterized in that the top of the support structure is provided with a recess opposite the sealing cover, in which recess the rail-bearing beam is fixedly mounted.
9. The transit system of claim 8, wherein the cross-sectional shape of the tunnel is horseshoe, circular or rectangular;
the groove is an arc-shaped groove;
the cross section of the sealing cover is in an inverted U shape.
10. A construction method of the underground low vacuum pipeline ultrahigh speed magnetic levitation transportation system according to any one of claims 1-9, characterized by comprising the following steps:
constructing a tunnel, and forming a lining structure on the inner wall of the tunnel;
constructing a supporting structure on a lining structure at the bottom in the tunnel;
fixedly mounting a rail bearing beam on a support structure;
fixedly mounting the magnetic suspension track on a track bearing beam;
the sealing cover is fixedly arranged on the supporting structure, and a low vacuum environment for the running of the ultra-high speed maglev train is formed between the sealing cover and the supporting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010667998.6A CN111775715B (en) | 2020-07-13 | 2020-07-13 | Ultra-high-speed magnetic levitation traffic system of underground low-vacuum pipeline and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010667998.6A CN111775715B (en) | 2020-07-13 | 2020-07-13 | Ultra-high-speed magnetic levitation traffic system of underground low-vacuum pipeline and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111775715A true CN111775715A (en) | 2020-10-16 |
| CN111775715B CN111775715B (en) | 2024-03-15 |
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| CN202010667998.6A Active CN111775715B (en) | 2020-07-13 | 2020-07-13 | Ultra-high-speed magnetic levitation traffic system of underground low-vacuum pipeline and construction method thereof |
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Cited By (3)
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| CN114559969A (en) * | 2021-09-10 | 2022-05-31 | 中北大学 | Method for operating pneumatic-assisted low-vacuum pipeline harmonic airflow ultrahigh-speed flying train |
| CN115056804A (en) * | 2022-07-12 | 2022-09-16 | 中铁第四勘察设计院集团有限公司 | Vacuum magnetic suspension pipeline and vacuum maintaining method |
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