CN115094686B - Groove type rail vacuum sealing tubular beam - Google Patents
Groove type rail vacuum sealing tubular beam Download PDFInfo
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- CN115094686B CN115094686B CN202210724370.4A CN202210724370A CN115094686B CN 115094686 B CN115094686 B CN 115094686B CN 202210724370 A CN202210724370 A CN 202210724370A CN 115094686 B CN115094686 B CN 115094686B
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- outer tube
- bottom plate
- side wall
- wall
- transverse
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- 238000007789 sealing Methods 0.000 title abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 239000004567 concrete Substances 0.000 claims description 19
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000005339 levitation Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 16
- 239000003351 stiffener Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- E01B25/305—Rails or supporting constructions
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/10—Tunnel systems
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- 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
-
- 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
- E01B25/32—Stators, guide rails or slide rails
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
-
- 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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a vacuum sealing tubular beam for a groove type track. The bottom in the existing low-vacuum ultrahigh-speed magnetic levitation pipeline is designed with a longitudinal continuous plane structure as a travelling rail, so that the overall stability is poor, the side wall and the bottom plate of the rail are too thick, and the heat dissipation in the pipeline is not facilitated. The tubular beam comprises an outer tube, a groove type track structure and a supporting structure; the groove type track structure is positioned at the inner bottom of the outer tube and comprises a bottom plate and a first side wall above two ends of the bottom plate, and an electromagnetic coil is arranged on the inner side of the first side wall; the support structure comprises a vertical support and a first transverse support, the vertical support is arranged between the bottom plate and the inner wall of the outer tube below the bottom plate, and the first transverse support is arranged between the first side wall and the inner wall of the outer tube outside the first side wall. The outer tube and the groove type track structure are connected in a punctiform or linear manner through the supporting structure, so that the condition of unbalanced transverse rigidity of the tube beam is effectively improved, and the outer tube is uniformly stressed under the influence of atmospheric pressure, load and temperature; a large number of gaps are reserved, so that the rigidity is improved, and meanwhile, the heat dissipation is facilitated.
Description
Technical Field
The invention relates to the technical field of vacuum pipeline magnetic suspension transportation, in particular to a groove type track vacuum sealing tubular beam.
Background
For ground traffic, wheeltrack train speeds up to 400km/h have substantially reached the limits of safety and cost. By optimizing it is possible to reach further 500km/h of operating speed (air resistance 92% of total resistance), and once this speed limit is exceeded, vacuum ducts are required to provide a low air pressure environment to reduce air resistance. The car body in the vacuum pipeline is provided with a strong magnet, the track is provided with a magnetic induction coil, strong levitation force and traction force are provided through electromagnetic action, meanwhile, mechanical friction resistance of wheel-rail technology is eliminated, the speed can reach 1000-4000 km/h, the speed is faster, and the energy consumption and the operation cost are lower.
The low-vacuum ultrahigh-speed magnetic levitation pipeline needs to keep the vacuum degree of the long space in the pipeline for a long time, and in order to reduce the energy consumption for maintaining the vacuum state, the sealing requirements of the pipeline structure and the connecting part are extremely high. Because the inside of the pipeline is in an approximate vacuum state, the atmospheric pressure of atmospheric pressure is uniformly distributed on the outer surface of the pipeline in an annular shape, and the huge atmospheric load causes larger tensile stress to be generated on the inner side of the vacuum pipeline.
When the train runs at an ultrahigh speed in the vacuum pipeline, the aerodynamic resistance generated by the thin air in the pipeline is still the main resistance of the train running, the section of the vacuum pipeline can generate a blocking effect under the condition of economy and rationality, so that the air in front of the train is extruded to be heated more when the train runs, and the electromagnetic coil for providing the power of the train can continuously generate heat when the electromagnetic coil works, the convection heat dissipation performance of the thin air in the pipeline is poor, the heat in the pipeline is continuously accumulated, and the temperature is continuously increased.
Strong magnets arranged on two sides of a maglev train body can generate eddy current effect on metal in a certain range along with train operation, and electromagnetic resistance is formed. The wheels and the steel rails are canceled at the bottom of the train, and the strong magnets and the corresponding electromagnetic coils arranged at the two sides of the train body generate vertical, transverse and longitudinal attractive forces and repulsive forces to drive the train to float forward at high speed, so that the vacuum pipeline has the requirement on the longitudinal rigidity of the structure, and meanwhile, the transverse rigidity also needs to meet the requirement on the deformation of the rail, and the vacuum pipeline is greatly different from the traditional rail stress mode.
At present, from the technical data disclosed at home and abroad, the low-vacuum ultra-high-speed magnetic levitation pipeline basically adopts a large-diameter circular tube structure, as shown in fig. 1, a longitudinal continuous plane structure is designed at the bottom of the pipeline as a travelling rail, so that the requirement of structural rigidity can be met while the air tightness of the pipeline is ensured. However, the existing pipeline structure still has the following technical defects:
1. the longitudinal and transverse structural design of the circular steel tube of the vacuum pipeline is not matched with the stress of the pipeline.
The circular steel tube outside the existing vacuum pipeline is of a main bearing structure. Because the steel pipe is a completely symmetrical section, the transverse and vertical bending resistance of the pipeline is basically consistent. When the train runs in the vacuum pipeline, the transverse load is only the horizontal repulsive force of the strong magnets on two sides of the train body, and the vertical load comprises the dead weight of the vacuum pipeline and the running rail, the dead weight of the train, the vertical repulsive force of the strong magnets on two sides of the train body and the like, and is far greater than the transverse load. When the wall thickness of the steel pipe is designed by taking the vertical load as the most control condition, the transverse rigidity is rich, the material strength is not fully utilized, and the structural economy is low.
2. The design of the concrete running rail in the vacuum pipeline also needs to be optimized.
The driving track in the existing vacuum pipeline is arranged at the middle lower part in the pipeline, the thickness of the side wall of the track structure provided with the magnetic resistance coil and the thickness of the bottom plate are not designed according to actual stress demands, concrete is directly adopted to completely fill the space between the magnetic resistance coil and the round steel pipe, the self weight of the vacuum pipeline structure is increased when the concrete dosage is increased, the thickness of the round steel pipe is further increased, and the cost is increased.
3. Under the condition of meeting the blocking ratio, the section of the vacuum pipeline is large, the structural height is high, and the overall stability of the pipeline is poor.
The section of the existing vacuum pipeline is circular, the middle lower part of the pipeline is a large-area solid concrete travelling rail, and the section permeability is poor. Under the condition of a certain vehicle body cross-section area, the only method for reducing the blocking ratio is to increase the diameter of the steel pipe, so that the structure height of the vacuum pipeline is further increased, the structure stability is reduced, the risk of structural instability exists during transportation, installation and train operation, and meanwhile, the steel consumption is increased, and the construction cost is further increased.
4. The side wall and the bottom plate of the concrete running rail are too thick, which is not beneficial to heat dissipation in the pipeline.
A large number of magnetic induction coils are arranged on the side wall and the bottom surface of the concrete travelling rail, and continuously generate heat when power is provided for the running of the vehicle. The side wall and the bottom plate of the existing concrete running rail are directly combined with the steel pipe in a filling mode, and the thickness is large. The concrete material itself heat conductivility is relatively poor, and the heat can't dispel for a long time and lead to coil surface temperature to rise, influences coil material insulating properties and life, and the temperature is constantly accumulated in the pipeline simultaneously, and the steel pipe produces great temperature stress and temperature deformation, influences train operation smoothness and pipeline structure safety in utilization.
5. The existing vacuum pipeline is difficult to construct and transport.
The external steel pipe and the internal concrete running rail of the existing vacuum pipeline are connected in a filling joint mode, and are required to be cast into a whole on site, so that the construction speed is low, and the construction precision and quality are difficult to ensure. The rigidity of the section of the pipeline after construction is extremely unbalanced, the rigidity of the upper steel pipe is weak, the rigidity of the joint part of the lower steel pipe and the concrete is very strong, the structure is extremely easy to overturn and overturn during transportation, lifting and installation, the construction difficulty is high, and the construction protection measures are high in cost.
Disclosure of Invention
The invention aims to provide a groove type track vacuum sealing tubular beam, which solves the problems that the existing low-vacuum ultrahigh-speed magnetic levitation pipeline is poor in overall stability, too thick in track side wall and bottom plate, unfavorable for heat dissipation in the pipeline and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The groove type track vacuum sealing pipe beam comprises an outer pipe, a groove type track structure and a supporting structure;
the groove type track structure is positioned at the inner bottom of the outer tube and comprises a bottom plate and a first side wall above two ends of the bottom plate, and an electromagnetic coil is arranged on the inner side of the first side wall;
The support structure comprises a vertical support and a first transverse support, wherein the vertical support is arranged between the bottom plate and the inner wall of the outer tube below the bottom plate, and the first transverse support is arranged between the first side wall and the outer wall of the outer tube.
Further, the outer wall of the outer tube is provided with longitudinal stiffening ribs and annular transverse stiffening ribs;
The annular transverse stiffening ribs are in a circular ring shape, are arranged on the outer wall of the outer tube perpendicular to the length direction of the outer tube, and are arranged at intervals along the length direction of the outer tube;
The longitudinal stiffening ribs are rectangular, are arranged between two adjacent annular transverse stiffening ribs, and are radially arranged on the outer wall of the outer tube.
Further, the top surface and the bottom surface of the bottom plate are parallel, and the cross section of the bottom plate is rectangular;
the inner side surface and the outer side surface of the first side wall are parallel, and the cross section of the first side wall is rectangular;
The bottom plate is horizontally arranged, the first side walls are perpendicular to the bottom plate and arranged above the two ends of the bottom plate, and the first side walls on the two sides are symmetrically arranged left and right;
the bottom plate and the first side wall are integrally prefabricated concrete structures.
Further, the vertical support is a first vertical support, and the first vertical support is of a concrete structure, is perpendicular to the bottom plate and is arranged along the length direction of the outer tube in a through-length manner;
The top of the first vertical support is glued to the bottom surface of the bottom plate by epoxy glue, and the bottom of the first vertical support is connected to the inner wall of the outer tube by shear nails.
Or the vertical supports are second vertical supports, and the second vertical supports are rod pieces, are perpendicular to the bottom plate and are arranged at intervals along the length direction of the outer tube;
The bottom of the second vertical support is connected to the inner wall of the outer tube, and the top of the second vertical support is connected to a reserved steel plate pre-buried in the bottom surface of the bottom plate.
Further, the first transverse support is a rod piece, is perpendicular to the first side wall and is arranged at intervals along the length direction of the outer tube;
One end of the first transverse support is connected to the inner wall of the outer tube, and the other end of the first transverse support is connected to the embedded steel plate arranged on the outer side face of the first side wall.
Further, the channel rail structure further comprises a second side wall perpendicular to the bottom plate and arranged at the center above the bottom plate;
The second side wall is symmetrically provided with two paths, and the side surface of the second side wall of each side, which faces the first side wall of the side, is provided with an electromagnetic coil.
Further, the support structure further comprises a second transverse support, and the second transverse support is arranged between the two second side walls and perpendicular to the second side walls.
Further, the second transverse supports are rod pieces and are arranged at intervals along the length direction of the outer tube;
And two ends of the second transverse support are connected to embedded steel plates arranged corresponding to the side surfaces of the second side walls.
Further, the cross section of the outer tube is round, horseshoe-shaped, 8-shaped or oblong.
Compared with the prior art, the invention has the following beneficial effects:
1. The structure of the invention effectively reduces the section size of the track structure, lightens the self weight of the structure under the condition of a certain load, reduces the wall thickness of the outer pipe, reduces the quantity of reinforced concrete, reduces the size of the lower structure and improves the overall engineering economy.
2. The outer tube and the groove type track structure are connected in a dot or linear mode through the supporting structure, the condition that transverse rigidity of the tube beam is unbalanced is effectively improved, and the outer tube is uniformly stressed under the influence of atmospheric pressure, load and temperature. And meanwhile, the longitudinal stiffening ribs and the transverse stiffening ribs are additionally arranged, so that the structural safety is ensured, the structural size can be further optimized, and the material utilization rate is improved.
3. In the structure of the invention, a large number of pores are reserved on the side wall, the bottom plate and the outer tube, thereby improving the clear area of the vacuum pipeline. Therefore, the structural section can be further reduced under the condition that the blocking ratio meets the requirement, and the cost of the tubular beam is reduced.
4. In the structure of the invention, the side wall and the bottom plate are both designed into thin wall structures, the transverse support is a longitudinal discontinuous point support, and the heat generated during the operation of the electromagnetic coil can be quickly transferred to the external tubular structure through the concrete thin wall and dissipated into the outside air, thereby reducing the temperature accumulation in the pipeline, prolonging the service life of the electromagnetic equipment and improving the economical efficiency and the safety of the tubular beam.
5. The structure of the invention can adopt a construction method of factory prefabrication on-site assembly, the beam manufacturing process is simple and efficient, the beam manufacturing precision is improved, and the engineering cost is reduced.
6. In addition to the circular structure, the structure of the invention can also adopt cross section forms of other round transition such as horseshoe shape, in some embodiments, compared with the circular vacuum sealing tubular beam under the condition that the cross section area and the porosity are unchanged, the invention can effectively reduce the height of the pipeline, solve the problems that the circular pipeline structure is easy to overturn and overturn during transportation, lifting and installation, has high construction difficulty and high construction protection measure cost, and has better overall stability during train operation.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a prior art vacuum duct structure.
FIG. 2 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 1 of the present invention.
FIG. 3 is a cross-sectional view of a tubular beam at the location of an annular transverse stiffener according to example 1 of the present invention.
Fig. 4 is a partially enlarged view of the portion where the first lateral support is connected to the first side wall in embodiment 1 of the present invention (partially enlarged view of a portion a in fig. 2).
Fig. 5 is a partially enlarged view of the connection portion of the first vertical support and the floor panel in embodiment 1 of the present invention (partially enlarged view of the portion B in fig. 2).
Fig. 6 is a longitudinal sectional view of a tubular beam in embodiment 1 of the present invention.
Fig. 7 is a longitudinal sectional view of a tubular beam in embodiment 2 of the present invention.
Fig. 8 is a partial enlarged view of the connection portion of the second vertical support and the bottom plate in embodiment 2 of the present invention.
FIG. 9 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 3 of the present invention.
FIG. 10 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 4 of the present invention.
FIG. 11 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 5 of the present invention.
FIG. 12 is a cross-sectional view of a tubular beam at the location of an annular transverse stiffener according to example 5 of the present invention.
FIG. 13 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 6 of the present invention.
FIG. 14 is a cross-sectional view of a tubular beam at the location of an annular transverse stiffener according to example 6 of the present invention.
FIG. 15 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 7 of the present invention.
FIG. 16 is a cross-sectional view of a tubular beam at the location of an annular transverse stiffener according to example 7 of the present invention.
FIG. 17 is a cross-sectional view of a tubular beam at the location of a longitudinal stiffener according to example 8 of the present invention.
FIG. 18 is a cross-sectional view of a tubular beam at the location of an annular transverse stiffener according to example 8 of the present invention.
The marks in the figure are as follows:
The novel steel plate comprises a 1-outer tube, a 2-bottom plate, a 3-first side wall, a 4-first vertical support, a 5-first transverse support, a 6-longitudinal stiffener, a 7-annular transverse stiffener, an 8-embedded steel plate, a 9-second vertical support, a 10-electromagnetic coil, 11-epoxy resin glue, 12-shear nails, 13-second side walls and 14-second transverse supports.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "left," "right," "longitudinal," "transverse," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience in describing the patent and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the patent. The description of the terms "first," "second," and the like, as used herein, are merely for the purpose of more clearly describing structural features in terms of distinguishing between structures and should not be construed as limiting the relationship, sequence, importance, etc.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
In the description of the embodiment, the longitudinal direction of the outer tube 1 is defined as the longitudinal direction, and the direction perpendicular to the longitudinal direction of the outer tube 1 is defined as the transverse direction.
As shown in the prior vacuum pipeline structure in figure 1, the travelling rail in the vacuum pipeline is arranged at the middle lower part in the pipeline, the electromagnetic coil and the circular steel pipe are completely filled by directly adopting concrete, the self weight of the vacuum pipeline structure is increased while the dosage of the concrete is increased, and the cost is increased. In addition, the permeability of the cross section of the structural form is poor, heat dissipation in a pipeline is not facilitated, and the in-situ casting construction difficulty is high.
To overcome the above-mentioned drawbacks, the present application provides a channel rail vacuum seal tube beam, as shown in fig. 1, comprising an outer tube 1, a channel rail structure and a support structure. The groove track structure is located in the inner bottom of the outer tube 1 and comprises a bottom plate 2 and a first side wall 3 above two ends of the bottom plate 2, and an electromagnetic coil 10 is arranged on the inner side of the first side wall 3. The support structure comprises a vertical support and a first transverse support 5, wherein the vertical support is arranged between the bottom plate 2 and the inner wall of the outer tube 1 below the bottom plate, and the first transverse support 5 is arranged between the first side wall 3 and the outer tube 1 inner wall outside the first side wall. The groove type track structure is connected with the outer tube 1 in a dot or linear supporting mode, the condition of unbalanced transverse rigidity of the tube beam is effectively improved, and the live load is uniform under the influence of atmospheric pressure, load and temperature. A large number of holes are reserved between the groove type track structure and the outer tube 1, so that heat dissipation in the pipeline is facilitated, the net area of the vacuum pipeline is increased, the structural section can be further reduced under the condition that the blocking ratio is ensured to meet the requirement, and the cost of the pipeline beam is reduced.
In addition, as shown in connection with fig. 2, 3 and 4, the outer wall of the outer tube 1 is provided with longitudinal stiffeners 6 and annular transverse stiffeners 7 as auxiliary structures for improving the rigidity of the outer tube 1. The annular transverse stiffening ribs 7 are annular, are arranged on the outer wall of the outer tube 1 in the length direction perpendicular to the outer tube 1, namely transversely arranged and are arranged at intervals along the length direction of the outer tube 1. The longitudinal stiffening ribs 6 are rectangular, are arranged between two adjacent rings of the annular transverse stiffening ribs 7, and are radially arranged on the outer wall of the outer tube 1, namely, are longitudinally arranged.
The groove type track structure is of a thin-wall structure, provides a space for a supporting structure to possibly arrange, and reserves a large number of holes. The top surface and the bottom surface of the bottom plate 2 are parallel, and the cross section of the bottom plate is rectangular. The inner side surface and the outer side surface of the first side wall 3 are parallel, and the cross section is rectangular. The bottom plate 2 is horizontally arranged, the first side walls 3 are perpendicular to the bottom plate 2 and arranged above two ends of the bottom plate 2, and the first side walls 3 on two sides are symmetrically arranged left and right. The self weight can be alleviateed to such structure, reduces the construction volume, and more does benefit to prefabricated mill prefabrication, and bottom plate 2 and first lateral wall 3 can be the precast concrete structure of whole, and the construction site is assembled in transportation after the mill prefabrication, and the structure precision is more controllable.
In the invention, the vertical support can adopt two structural forms:
as shown in fig. 5 and 6, the vertical supports are first vertical supports 4, and the first vertical supports 4 are concrete structures, are perpendicular to the bottom plate 2, and are arranged along the length direction of the outer tube 1. The top of the first vertical support 4 is adhered to the bottom surface of the bottom plate 2 by epoxy glue 11, and the bottom of the first vertical support 4 is connected to the inner wall of the outer tube 1 by shear nails 12. The shear pins 12 may be welded to the inner wall of the outer tube 1 in advance, the first vertical support 4 being applied with the shear pins 12 cast therein.
As shown in fig. 7 and 8, the vertical supports may also be second vertical supports 9, where the second vertical supports 9 are rods, perpendicular to the bottom plate 2 and spaced apart along the length of the outer tube 1. The bottom of the second vertical support 9 is connected to the inner wall of the outer tube 1, and the top of the second vertical support 9 is connected to a reserved steel plate 8 provided on the bottom surface of the bottom plate 2. The embedded steel plate 8 may be pre-embedded in the bottom of the base plate 2.
In the present invention, the first lateral supports 5 are rods, which are perpendicular to the first side wall 3 and are spaced apart along the length of the outer tube 1. One end of the first lateral support 5 is connected to the inner wall of the outer tube 1, and the other end of the first lateral support 5 is connected to an embedded steel plate 8 provided on the outer side surface of the first side wall 3. The pre-buried steel plate 8 may be pre-buried in the first sidewall 3 in advance.
The above description of the structure is that in the case of a single line form in the tubular beam, the grooved track structure in the outer tube 1 has a single groove which provides a lane for a single line vehicle. The invention also provides for a double-line construction in the tubular beam, see fig. 11, the channel rail construction further comprising a second side wall 13, the second side wall 13 being arranged centrally above the base plate 2 perpendicularly to the base plate 2. The second side wall 13 is symmetrically provided with two, and the side of the second side wall 13 on each side facing the side first side wall 3 is provided with the electromagnetic coil 10. Thus, a double-channel track structure is constructed in the outer tube 1, which provides a roadway for a two-wire vehicle. Correspondingly, the support structure further comprises a second transverse support 14, wherein the second transverse support 14 is arranged between the two second side walls 13 and is perpendicular to the second side walls 13. The second transverse supports 14 are rod pieces and are arranged at intervals along the length direction of the outer tube 1; both ends of the second lateral support 14 are connected to the pre-buried steel plates 8 provided corresponding to the sides of the second sidewall 13.
In the invention, the outer tube 1 is a steel tube, and the cross section can be in a round, horseshoe-shaped, 8-shaped or oblong contour line round transition form according to the requirement. Wherein, the circular section is a completely symmetrical section, which can generate mirror effect to reduce the pipe wall stress generated by the atmospheric pressure. The horseshoe-shaped constant section can improve the stability of the tubular beam, and can avoid the problem of poor stability during transportation and installation which possibly occur in a round section form. Can be flexibly selected according to different actual requirements.
The rod piece can be made of steel, weather-resistant steel or stainless steel and other metal materials with certain material strength, and the metal materials can be fixedly connected through welding.
Example 1:
As shown in fig. 2-6, the slotted track structure in this embodiment is a single-slotted structure, the cross section of the outer tube 1 is circular, and the vertical support is a first vertical support 4.
Example 2:
As shown in fig. 7-8, the slotted track structure in this embodiment is a single-slotted structure, the cross section of the outer tube 1 is circular, and the vertical support is a second vertical support 9.
Example 3:
As shown in fig. 9, the slotted track structure in this embodiment is a single-slot structure, the cross section of the outer tube 1 is horseshoe-shaped, and the vertical support is a first vertical support 4.
Example 4:
as shown in fig. 10, the slotted track structure in this embodiment is a single-slot structure, and the cross section of the outer tube 1 is horseshoe-shaped, and no vertical support is provided.
Example 5:
As shown in fig. 11-12, the slotted track structure in this embodiment is a double-slotted structure, the cross section of the outer tube 1 is circular, and the vertical support is a first vertical support 4.
Example 6:
As shown in fig. 13-14, the slotted track structure in this embodiment is a double-slotted structure, the cross section of the outer tube 1 is 8-shaped, and the vertical support is a first vertical support 4.
Example 7:
as shown in fig. 15-16, the slotted track structure in this embodiment is a double-slotted structure, the cross section of the outer tube 1 is horseshoe-shaped, and the vertical support is a first vertical support 4. The double-groove structure is internally provided with an intermediate wall, the single-tube section is divided into fully symmetrical double-tube sections, and the function of increasing the transverse rigidity of the sections is achieved.
Example 8:
As shown in fig. 17-18, the slotted track structure in this embodiment is a double-slotted structure, the cross section of the outer tube 1 is oblong, and the vertical support is a first vertical support 4. The double-groove structure is internally provided with an intermediate wall, the single-tube section is divided into fully symmetrical double-tube sections, and the function of increasing the transverse rigidity of the sections is achieved.
The groove type track vacuum sealing tubular beam provided by the invention adopts a closed pipeline, longitudinal ribs, transverse ribs, groove type track structures, lateral wall transverse supports and bottom plate vertical supports to form a running track structure of the magnetic levitation train, replaces the structure formed by combining concrete solid blocks and closed circular pipes before, combines the closed pipeline, bridge structures and track structures into a whole, has definite structure functions and clear force transmission path, has simple tubular beam structure and effectively reduces the weight of the whole hole beam; the arrangement of the longitudinal ribs and the transverse ribs increases the longitudinal rigidity and the transverse rigidity of the pipeline, and fully exerts the material strength; the groove type track slab adopts a factory prefabrication construction method, site construction is not needed, the beam manufacturing process is simple and efficient, the beam manufacturing precision is improved, and the engineering cost is reduced.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (7)
1. Groove track vacuum seal tubular beam, its characterized in that:
The pipe beam comprises an outer pipe (1), a groove type track structure and a supporting structure; the groove type track structure is positioned at the inner bottom of the outer tube (1) and comprises a bottom plate (2) and first side walls (3) above two ends of the bottom plate (2), and electromagnetic coils (10) are arranged on the inner sides of the first side walls (3); the support structure comprises a vertical support and a first transverse support (5), wherein the vertical support is arranged between the bottom plate (2) and the inner wall of the outer tube (1) below the bottom plate, and the first transverse support (5) is arranged between the first side wall (3) and the outer side of the first side wall and the inner wall of the outer tube (1);
The vertical supports are first vertical supports (4), the first vertical supports (4) are of concrete structures, are perpendicular to the bottom plate (2) and are arranged along the length direction of the outer tube (1) in a through and long mode; the top of the first vertical support (4) is adhered to the bottom surface of the bottom plate (2) through epoxy resin glue (11), and the bottom of the first vertical support (4) is connected to the inner wall of the outer tube (1) through shear nails (12);
Or the vertical supports are second vertical supports (9), the second vertical supports (9) are rod pieces, are perpendicular to the bottom plate (2) and are arranged at intervals along the length direction of the outer tube (1); the bottom of the second vertical support (9) is connected to the inner wall of the outer tube (1), and the top of the second vertical support (9) is connected to a pre-buried reserved steel plate (8) on the bottom surface of the bottom plate (2);
The first transverse supports (5) are rod pieces, are perpendicular to the first side wall (3) and are arranged at intervals along the length direction of the outer tube (1); one end of the first transverse support (5) is connected to the inner wall of the outer tube (1), and the other end of the first transverse support (5) is connected to an embedded steel plate (8) arranged on the outer side face of the first side wall (3).
2. The channel rail vacuum seal tubular beam of claim 1, wherein:
The outer wall of the outer tube (1) is provided with longitudinal stiffening ribs (6) and annular transverse stiffening ribs (7);
the annular transverse stiffening ribs (7) are annular, are perpendicular to the length direction of the outer tube (1), are arranged on the outer wall of the outer tube (1), and are arranged at intervals along the length direction of the outer tube (1);
the longitudinal stiffening ribs (6) are rectangular, are arranged between two adjacent rings of annular transverse stiffening ribs (7), and are radially arranged on the outer wall of the outer tube (1).
3. The channel rail vacuum seal tubular beam of claim 1, wherein:
the top surface and the bottom surface of the bottom plate (2) are parallel, and the cross section of the bottom plate is rectangular;
the inner side surface and the outer side surface of the first side wall (3) are parallel, and the cross section of the first side wall is rectangular;
The bottom plate (2) is horizontally arranged, the first side walls (3) are perpendicular to the bottom plate (2) and are arranged above two ends of the bottom plate (2), and the first side walls (3) on two sides are symmetrically arranged in a left-right mode;
the bottom plate (2) and the first side wall (3) are integrally prefabricated concrete structures.
4. The channel rail vacuum seal tubular beam of claim 1, wherein:
the channel rail structure further comprises a second side wall (13), wherein the second side wall (13) is perpendicular to the bottom plate (2) and is arranged in the center above the bottom plate (2);
The second side wall (13) is symmetrically provided with two paths, and the side surface of the second side wall (13) on each side, facing the first side wall (3) on the side, is provided with an electromagnetic coil (10).
5. The channel rail vacuum seal tubular beam of claim 4, wherein:
The support structure further comprises a second transverse support (14), wherein the second transverse support (14) is arranged between the two second side walls (13) and is perpendicular to the second side walls (13).
6. The channel rail vacuum seal tubular beam of claim 5, wherein:
the second transverse supports (14) are rod pieces and are arranged at intervals along the length direction of the outer tube (1);
both ends of the second transverse support (14) are connected to embedded steel plates (8) arranged corresponding to the side surfaces of the second side walls (13).
7. The channel rail vacuum seal tubular beam of claim 1, wherein:
The cross section of the outer tube (1) is round, horseshoe-shaped, 8-shaped or oblong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210724370.4A CN115094686B (en) | 2022-06-24 | 2022-06-24 | Groove type rail vacuum sealing tubular beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210724370.4A CN115094686B (en) | 2022-06-24 | 2022-06-24 | Groove type rail vacuum sealing tubular beam |
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| CN115094686A CN115094686A (en) | 2022-09-23 |
| CN115094686B true CN115094686B (en) | 2024-07-16 |
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| CN202210724370.4A Active CN115094686B (en) | 2022-06-24 | 2022-06-24 | Groove type rail vacuum sealing tubular beam |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024107A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | Medium-and low-speed maglev track girder big displacement telescopic device |
| CN110939026A (en) * | 2019-11-26 | 2020-03-31 | 中铁第四勘察设计院集团有限公司 | Magnetic suspension track beam |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1523194A (en) * | 1966-12-26 | 1968-05-03 | Japan National Railway | Ballastless railway track structure |
| EP2430239A4 (en) * | 2009-02-24 | 2014-05-14 | Palomair Invention S R L | A method and equipment for arranging track banking, electric power supplies and tract covering |
| KR101830638B1 (en) * | 2016-12-12 | 2018-02-21 | 한국건설기술연구원 | Tube structure for integrating tube shield into concrete slab structure for super-speed tube railway, and construction for the same |
| CN112626937B (en) * | 2019-09-24 | 2022-08-09 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Rail beam structure coated with metal film and split type vacuum pipeline with rail beam structure |
| CN113152168A (en) * | 2020-01-07 | 2021-07-23 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | U-shaped double-line vacuum pipeline beam |
| CN112626940B (en) * | 2020-12-18 | 2022-07-15 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet connecting device and superconducting electromagnetic levitation vehicle track system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024107A (en) * | 2018-09-28 | 2018-12-18 | 中铁磁浮交通投资建设有限公司 | Medium-and low-speed maglev track girder big displacement telescopic device |
| CN110939026A (en) * | 2019-11-26 | 2020-03-31 | 中铁第四勘察设计院集团有限公司 | Magnetic suspension track beam |
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