CN114411459A - High-speed magnetic levitation combined track and construction method thereof - Google Patents
High-speed magnetic levitation combined track and construction method thereof Download PDFInfo
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- CN114411459A CN114411459A CN202210206831.9A CN202210206831A CN114411459A CN 114411459 A CN114411459 A CN 114411459A CN 202210206831 A CN202210206831 A CN 202210206831A CN 114411459 A CN114411459 A CN 114411459A
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- track
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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
- E01B25/305—Rails or supporting constructions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of high-speed magnetic levitation track traffic, in particular to a high-speed magnetic levitation combined track. The U-shaped beam and the track beam are arranged in the U-shaped beam; a connecting steel bar A is arranged in the U-shaped beam; the bottom of the track beam is provided with a connecting reinforcing steel bar B, the connecting reinforcing steel bar B is fixedly welded with the connecting reinforcing steel bar A, and a supporting part is poured at the welding position of the connecting reinforcing steel bar A and the connecting reinforcing steel bar B. The invention has the most prominent characteristics that the structural form of the track is innovated, the difficulty and the cost of the prefabrication process are greatly reduced by combining the U-shaped beam and the track beam, the curve section is constructed for two times, and the problems of complicated single-track beam manufacturing problem and difficult fine adjustment of the curve section are solved.
Description
Technical Field
The invention relates to the technical field of high-speed magnetic levitation track traffic, in particular to a high-speed magnetic levitation combined track.
Background
The conventional magnetic suspension traffic has the technical characteristics that the train is in rail embracing operation due to the technical characteristic requirements, the prior art adopts a single-rail overhead structure, a rail beam integrating a beam and a rail is used as a supporting structure and a guiding structure of the magnetic suspension train, and the rail beam has the functions of a bearing beam and a rail.
Chinese patent CN111206462A discloses a U-shaped magnetic suspension track traffic beam, which comprises an outer U-shaped beam body and a U-shaped or n-shaped track support arranged in the beam body; the bottom of the track support is connected with the bottom of the beam body into a whole; the height of the rail support is lower than that of the beam body, and the beam body is flush with the floor of the train; an installation channel is arranged between the beam body and the track support; the two arms of the outer U-shaped beam body are two wing plates, the top ends of the wing plates are provided with wing edges, after the two rail transit beams are spliced together in parallel, the two wing edges are butted together in the middle of the beam body to directly form an emergency evacuation channel, so that the emergency evacuation channel with a steel structure does not need to be additionally built, however, the invention needs higher precision when prefabricating and installing the rail transit beams, requires a construction site to be in place at one time, has no room for circle modification, greatly increases the difficulty of the prefabrication process and the manufacturing cost due to the design of the beam body and the rail support in an integrated mode, and further increases the manufacturing difficulty and the manufacturing cost due to the complex shape of the rail in a curve section.
The U-shaped magnetic suspension track traffic beam disclosed by the invention is only suitable for medium and low speed magnetic suspension trains and cannot be applied to high speed magnetic suspension train operation.
Disclosure of Invention
The invention aims to provide a high-speed magnetic levitation combined track aiming at the problems in the background technology.
The invention adopts the following technical scheme for realizing the purpose:
a high speed magnetic levitation combination track, wherein: the device comprises a U-shaped beam and a track beam, wherein the track beam is arranged in the U-shaped beam; a connecting steel bar A is arranged in the U-shaped beam; and the bottom of the track beam is provided with a stubble connecting reinforcing steel bar B, and the stubble connecting reinforcing steel bar B is fixedly welded with the stubble connecting reinforcing steel bar A.
Preferably, the support part is cast at the welding position of the stubble reinforcing steel bar A and the stubble reinforcing steel bar B.
Preferably, two arms of the U-shaped beam are arc-shaped wing plates, an arc-shaped bottom plate and a bottom beam are arranged at the bottom of the U-shaped beam, an upper edge plate is arranged at the top end of each arc-shaped wing plate, and a bridge support is arranged below the bottom beam.
Preferably, the U-shaped beams are arranged in parallel on a reciprocating line, two adjacent upper edge plates form an emergency evacuation escape channel, the emergency evacuation escape channel is kept in an original state when the parallel distance is less than 50mm, and a gap filling cover plate is arranged when the parallel distance is more than 50 mm.
Preferably, a power supply rail embedded sleeve is embedded in the U-shaped beam, is located on one side of the stubbled steel bar A at the bottom of the U-shaped beam or on the side wall of the circular arc-shaped wing plate, and is internally provided with a power supply rail.
Preferably, the track beam further comprises track joint functional part embedded sleeves embedded at two ends and long stator embedded sleeves embedded at two side bottoms, and long stators are arranged in the long stator embedded sleeves.
Preferably, the track beam comprises a T-shaped structure or a pi-shaped beam structure.
Preferably, the T-shaped structure comprises a solid structure with two arc sides or a hollow box chamber structure.
The invention also discloses a construction method of the high-speed magnetic levitation combined track, which comprises the following steps:
s1, installing the U-shaped beam according to the requirements of a straight line section or a curve section, and hoisting the track beam into the U-shaped beam after the installation is finished;
and S2, adjusting the center line and the elevation of the track beam by using a three-dimensional jack, welding the joint reinforcing steel bars at the bottom of the track beam with the joint reinforcing steel bars in the U-shaped beam, binding stirrups, installing templates, and then pouring concrete to form a plurality of firm supporting parts.
Preferably, when the curved section in S1 is installed, the U-shaped beam is inclined, the beam body is prefabricated in a straight line, the fold line is placed, and the three-dimensional jack is used to heighten one side of the bottom beam, but the two bridge bearer installation surfaces at the same end are still at the same horizontal height.
Compared with the prior art, the invention has the following beneficial technical effects:
1) the high-speed magnetic suspension combined track greatly reduces the difficulty and cost of a prefabricating process by combining the U-shaped beam and the track beam, and solves the problems of complicated single-track beam manufacturing and difficult fine adjustment of a curve section by performing secondary construction on the curve section;
2) the high-speed magnetic suspension combined track reduces the noise generated to the surrounding environment when the magnetic suspension train runs at high speed through the semi-closed space formed by the U-shaped beam and the track beam;
3) the high-speed magnetic suspension combined track has the advantages that the long stator installation function is added through the track beam, the structure of the functional part is simplified, and the cost is reduced;
4) the high-speed maglev combined track is mutually constrained with the transverse rubber wheels of the maglev train through the track beam constraint surface, and the maglev train parking rubber wheels descend before the maglev train stops and slide on the beam surface of the track beam until the maglev train stops, so that the sliding function and the non-suspension parking function of the high-speed maglev train before the stop are increased, the control function is simplified, and the running energy consumption is reduced.
Drawings
FIG. 1 is a diagram illustrating a relationship between a high-speed magnetic levitation combined track and a train according to an embodiment of the present invention;
FIG. 2 is a schematic view of a curve section of a composite track;
FIG. 3 is a schematic view of a U-beam configuration;
FIG. 4 is a schematic structural view of a two-sided arc track beam;
FIG. 5 is a schematic view of a reciprocating path structure of a U-shaped beam;
FIG. 6 is a schematic diagram of a hollow box-room track beam structure;
FIG. 7 is a schematic view of a Pi-shaped rail beam;
FIG. 8 is a three-dimensional schematic view of a U-shaped beam;
FIG. 9 is a three-dimensional schematic view of a two-sided curved track beam;
figure 10 is a schematic diagram of the functional components of a magnetic levitation train.
Reference numerals: 1. a U-shaped beam; 1.1, an arc-shaped bottom plate; 1.2, arc wing plates; 1.3, an upper edge plate; 1.4, a bottom beam; 1.5, embedding a sleeve in the power supply rail; 1.6, connecting reinforcing steel bars A; 2. a track beam; 2.2, a solid structure with two arc sides; 2.3, connecting reinforcing steel bars B; 2.4, a track beam constraint surface; 2.5, pre-embedding a sleeve for the rail joint functional part; 2.6, embedding a sleeve in the long stator; 2.7 hollow chamber structure; 2.8, a pi-shaped beam structure; 3. a magnetic levitation train; 3.1, train levitation magnets; 3.2, transverse rubber wheels of the magnetic suspension train; 3.3, a magnetic-levitation train parking rubber wheel; 3.4, train floor; 4. a power supply rail; 5. a long stator; 6. a bridge support; 7. a support portion.
Detailed Description
Example one
As shown in fig. 1-4, fig. 8 and fig. 9, the high-speed magnetic levitation combined track provided by the invention comprises a U-shaped beam 1 and a track beam 2, wherein the track beam 2 is installed in the U-shaped beam 1; a connecting steel bar A1.6 is arranged in the U-shaped beam 1; the bottom of the track beam 2 is provided with a stubble connecting reinforcing steel bar B2.3, and the stubble connecting reinforcing steel bar B2.3 is fixedly welded with a stubble connecting reinforcing steel bar A1.6.
The supporting part 7 is poured at the welding position of the connecting reinforcing steel bar A1.6 and the connecting reinforcing steel bar B2.3.
In the embodiment, the stubbles and the steel bars A1.6 arranged in the U-shaped beam 1 and the stubbles and the steel bars B2.3 arranged at the bottom of the track beam 2 are fixedly welded, then a template is installed at the welding position, and finally concrete is poured to form a plurality of firm supporting parts 7, wherein the U-shaped beam 1 is prefabricated by using a mold, and the steel bars, the prestressed steel bars, the high-strength concrete with the strength of C50 or above, embedded parts and the like are used as materials.
Referring to fig. 3 and 5, in example 1, further:
two arms of the U-shaped beam 1 are arc-shaped wing plates 1.2, an arc-shaped bottom plate 1.1 and a bottom beam 1.4 are arranged at the bottom, an upper edge plate 1.3 is arranged at the top end of each arc-shaped wing plate 1.2, and a bridge support 6 is arranged below each bottom beam 1.4.
The U-shaped beams 1 are arranged in parallel on a reciprocating line, two adjacent upper edge plates 1.3 form an emergency evacuation escape channel, the emergency evacuation escape channel is kept in an original state when the parallel distance is less than 50mm, and a gap filling cover plate is arranged when the parallel distance is more than 50 mm.
A power supply rail embedded sleeve 1.5 is embedded in the U-shaped beam 1, the power supply rail embedded sleeve 1.5 is positioned on one side of a connecting reinforcing steel bar A1.6 at the bottom of the U-shaped beam 1 or the side wall of the circular arc-shaped wing plate 1.2, and a power supply rail 4 is arranged in the power supply rail embedded sleeve.
In this embodiment, the circular wing plate 1.2 of the U-beam 1 is designed in a circular arc shape, the space formed by the circular arc changes the airflow direction and the air pressure, the radius of the circular arc is related to the lateral stability of the U-beam 1, and the smaller the radius, the better the lateral stability. The bottom beam 1.4 of the U-shaped beam 1 has the function of adjusting the deflection of the beam body and balancing the centrifugal force of the curve section. The arc-shaped bottom plate 1.1 is beneficial to decomposing load stress and reducing the weight of the beam, meanwhile, the armpit angle combined with the bottom beam 1.4 is enlarged, the concentrated stress of the bottom beam 1.4 is reduced, and the arc-shaped structure has a guiding effect on vibration noise, so that the vibration noise of the beam body is concentrated to the circle center to achieve the effect of mutual offset; the left and right widths of the rectangular upper edge plate 1.3 are asymmetrical, the wider side is an emergency evacuation channel for assembling return lines, and the narrower side can be used for selectively installing signals and barriers.
Example two
As shown in fig. 1, 2, 4, 6, 7, and 10, the present embodiment further includes:
the track beam 2 further comprises track joint functional part embedded sleeves 2.5 embedded at two ends and long stator embedded sleeves 2.6 embedded at two side bottoms, and long stators 5 are arranged in the long stator embedded sleeves 2.6.
The track beam 2 comprises a T-shaped or a pi-shaped beam structure 2.8.
The T-shaped structure comprises a solid structure 2.2 or a hollow box-chamber structure 2.7 with two arc sides.
Meanwhile, a maglev train 3 is arranged on the track beam 2, train suspension magnets 3.1, maglev train transverse rubber wheels 3.2, maglev train parking rubber wheels 3.3 and a train floor 3.4 are sequentially and symmetrically arranged at the bottom of the maglev train 3, and the train suspension magnets 3.1 are correspondingly installed with the long stator 5.
In this embodiment, the width of the track beam 2 is determined by the bottom width of the maglev train 3. The installation width of the long stator 5 is determined by the width of the train levitation magnet 3.1, and the stress is calculated according to a single cantilever. The thickness of the track beam restraint surface 2.4 is determined by the width of the transverse rubber wheel 3.2 of the magnetic suspension train, and the stress requirement is met. The length of the track beam 2 is equal to that of the U-shaped beam 1, the stress of the track beam 2 is calculated according to the multi-fulcrum fixed constraint stress, and the height of the track beam 2 is in direct proportion to the suspension height of the magnetic suspension train 3. But the distance of the safe space under the 3.1 train levitation magnet is not less than 150 mm. At the same time, the height of the upper edge plate 1.3 is level with the train floor 3.4. The track beam 2 adopts a T-shaped structure or a Pi-shaped beam 2.7 structure, which is determined by the working space of a train suspension magnet 3.1, wherein the T-shaped structure also comprises a solid structure 2.2 with arc shapes at two sides or a hollow box chamber structure 2.7; meanwhile, the track beam 2 is constant load, and the self weight of the track beam 2 is reduced as much as possible on the premise of meeting the requirements of the train. The track beam 2 is prefabricated in a mode of a mold, and the track beam is made of steel bars, prestressed tendons, high-strength concrete above C80, embedded parts and the like.
The invention provides a construction method of a high-speed magnetic levitation combined track, which comprises the following steps:
s1, installing the U-shaped beam 1 according to the requirements of a straight line section or a curve section, and hoisting the track beam 2 into the U-shaped beam 1 after the installation is finished;
s2, adjusting the center line and the elevation of the track beam 2 by a three-dimensional jack, welding the connecting reinforcing steel bars 2.3 at the bottom of the track beam 2 with the connecting reinforcing steel bars 1.6 in the U-shaped beam 1, binding stirrups, installing templates, and then pouring concrete to form a plurality of firm supporting parts 7.
When the curved section in the S1 is installed, the U-shaped beam 1 is in an inclined state, the beam body is prefabricated according to a straight line, the broken line is placed, the three-dimensional jack is used for heightening one side of the bottom beam 1.4, and the installation surfaces of the two bridge supports 6 at the same end are still at the same horizontal height.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A high-speed magnetic levitation combined track is characterized in that: the device comprises a U-shaped beam (1) and a track beam (2), wherein the track beam (2) is arranged in the U-shaped beam (1); a connecting steel bar A (1.6) is arranged in the U-shaped beam (1); the bottom of the track beam (2) is provided with a connecting reinforcing steel bar B (2.3), and the connecting reinforcing steel bar B (2.3) is fixedly welded with the connecting reinforcing steel bar A (1.6).
2. A high speed magnetic levitation combined track as recited in claim 1, wherein: and a supporting part (7) is poured at the welding position of the joint reinforcing steel bar A (1.6) and the joint reinforcing steel bar B (2.3).
3. A high speed magnetic levitation combined track as recited in claim 1, wherein: the two arms of the U-shaped beam (1) are arc-shaped wing plates (1.2), the bottom of the U-shaped beam is provided with an arc-shaped bottom plate (1.1) and a bottom beam (1.4), the top end of each arc-shaped wing plate (1.2) is provided with an upper edge plate (1.3), and a bridge support (6) is arranged below the bottom beam (1.4).
4. A high speed magnetic levitation combined track as recited in claim 3, wherein: the U-shaped beams (1) are arranged in parallel on a reciprocating line, two adjacent upper edge plates (1.3) form an emergency evacuation escape channel, the parallel distance of the emergency evacuation escape channel is kept as it is when the parallel distance is less than 50mm, and a gap filling cover plate is arranged when the parallel distance is more than 50 mm.
5. A high speed magnetic levitation combined track as claimed in any one of claims 1 to 4, wherein: a power supply rail embedded sleeve (1.5) is embedded in the U-shaped beam (1), the power supply rail embedded sleeve (1.5) is located on one side of a connecting reinforcing steel bar A (1.6) at the bottom of the U-shaped beam (1) or the side wall of the circular arc-shaped wing plate (1.2), and a power supply rail (4) is arranged in the power supply rail embedded sleeve.
6. A high speed magnetic levitation combined track as recited in claim 1, wherein: the track beam (2) further comprises track joint functional piece embedded sleeves (2.5) embedded at two ends and long stator embedded sleeves (2.6) embedded at two side bottoms, and long stators (5) are arranged in the long stator embedded sleeves (2.6).
7. A high speed magnetic levitation combined track as claimed in claim 1 or 6, wherein: the track beam (2) comprises a T-shaped structure or a pi-shaped beam structure (2.8).
8. A high speed magnetic levitation combined track as recited in claim 7, wherein: the T-shaped structure comprises a solid structure (2.2) or a hollow box chamber structure (2.7) with two arc sides.
9. The construction method of the high-speed magnetic levitation combined track according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
s1, installing the U-shaped beam (1) according to the requirements of a straight line section or a curve section, and hoisting the track beam (2) into the U-shaped beam (1) after the installation is finished;
s2, adjusting the center line and the elevation of the track beam (2) by using a three-dimensional jack, welding the connecting reinforcing steel bars (2.3) at the bottom of the track beam (2) with the connecting reinforcing steel bars (1.6) in the U-shaped beam (1), binding stirrups, installing templates, and then pouring concrete to form a plurality of firm supporting parts (7).
10. The construction method of the high-speed magnetic levitation combined track as claimed in claim 9, wherein: when the curved section in the S1 is installed, the U-shaped beam (1) is in an inclined state, the beam body is prefabricated according to straight lines and placed in a broken line, one side of the bottom beam (1.4) is heightened by using a three-dimensional jack, and the installation surfaces of the two bridge supports (6) at the same end are still at the same horizontal height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206831.9A CN114411459A (en) | 2022-03-04 | 2022-03-04 | High-speed magnetic levitation combined track and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206831.9A CN114411459A (en) | 2022-03-04 | 2022-03-04 | High-speed magnetic levitation combined track and construction method thereof |
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| CN114411459A true CN114411459A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210206831.9A Pending CN114411459A (en) | 2022-03-04 | 2022-03-04 | High-speed magnetic levitation combined track and construction method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040221761A1 (en) * | 2001-09-21 | 2004-11-11 | Wu Xiangming | Track structure of the rapid track transit |
| CN108149532A (en) * | 2018-01-04 | 2018-06-12 | 嘉兴学院 | A kind of magnetic levitation track traffic two-wire simply supported beam |
| CN207891661U (en) * | 2018-02-07 | 2018-09-21 | 湖南省交通规划勘察设计院有限公司 | A kind of medium-and low-speed maglev traffic track beam and rail system |
| CN109706801A (en) * | 2019-01-31 | 2019-05-03 | 中铁磁浮交通投资建设有限公司 | A kind of magnetic levitation track traffic 3 in Curve Segment building-brick type support rail beam and its construction method |
| CN109914163A (en) * | 2019-03-14 | 2019-06-21 | 中铁二院工程集团有限责任公司 | A kind of magnetic of Prefabricated slab type floats composite orbit structure and its construction method |
| CN111206462A (en) * | 2020-03-09 | 2020-05-29 | 中铁二十三局集团轨道交通工程有限公司 | U type magnetic levitation track traffic beam |
| CN111235977A (en) * | 2020-03-19 | 2020-06-05 | 中铁二十三局集团轨道交通工程有限公司 | Side floating type rail transit guide beam |
-
2022
- 2022-03-04 CN CN202210206831.9A patent/CN114411459A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040221761A1 (en) * | 2001-09-21 | 2004-11-11 | Wu Xiangming | Track structure of the rapid track transit |
| CN108149532A (en) * | 2018-01-04 | 2018-06-12 | 嘉兴学院 | A kind of magnetic levitation track traffic two-wire simply supported beam |
| CN207891661U (en) * | 2018-02-07 | 2018-09-21 | 湖南省交通规划勘察设计院有限公司 | A kind of medium-and low-speed maglev traffic track beam and rail system |
| CN109706801A (en) * | 2019-01-31 | 2019-05-03 | 中铁磁浮交通投资建设有限公司 | A kind of magnetic levitation track traffic 3 in Curve Segment building-brick type support rail beam and its construction method |
| CN109914163A (en) * | 2019-03-14 | 2019-06-21 | 中铁二院工程集团有限责任公司 | A kind of magnetic of Prefabricated slab type floats composite orbit structure and its construction method |
| CN111206462A (en) * | 2020-03-09 | 2020-05-29 | 中铁二十三局集团轨道交通工程有限公司 | U type magnetic levitation track traffic beam |
| CN111235977A (en) * | 2020-03-19 | 2020-06-05 | 中铁二十三局集团轨道交通工程有限公司 | Side floating type rail transit guide beam |
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