Magnetic levitation track beam and track structure

Abstract

The present invention relates to the technical field of high-speed maglev train bridge engineering, and provides a maglev track beam, including a plurality of main beam sections arranged in sequence along the driving direction, and also including a splicing structure for eliminating the misaligned load effect stress between the end faces of two adjacent main beam sections facing each other, the two adjacent main beam sections are connected by the splicing structure, and the upper surfaces of the two adjacent main beam sections after connection are in the same plane. It also includes a maglev track structure, including the above-mentioned maglev track beam and another track beam arranged above the maglev track beam, the beam seam of the other track beam is aligned with the beam seam between the two adjacent main beam sections of the maglev track beam. A maglev track structure of the present invention includes the above-mentioned maglev track beam and another track beam arranged above the maglev track beam, the beam seam of the other track beam is aligned with the beam seam between the two adjacent main beam sections of the maglev track beam.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed maglev train bridge engineering, in particular to a maglev track beam and a track structure. Background Art

[0002] Due to its unique rail-holding operation mode, the structural form of the maglev track beam is different from that of ordinary wheel-rail rail transit track beams. The National Railway Administration issued the "Technical Standards for Maglev Railway (Implementation)" (TB10630-2019) Table 5.3.4-2, which stipulates that the allowable longitudinal misalignment value of the stator surface at the beam end is 0.6mm. High-speed maglev transportation has put forward higher requirements for driving smoothness and track positioning accuracy.

[0003] At present, large-span maglev track beams generally adopt the form of beam-on-beam, with the upper layer being the track-bearing beam as the vehicle running track, and the lower layer being the track beam as the main load-bearing structure. The total beam height of the beam-on-beam structure is too high, and there is a certain distance between the support and the beam end. Under the effects of temperature, live load and other loads, the vertical misalignment of the track beam joint is large. Under conventional arrangements, the larger the span of the load-bearing beam, the greater the misalignment of the beam end, which greatly affects the smoothness of high-speed train operation. Summary of the invention

[0004] The purpose of the present invention is to provide a magnetic suspension track beam and a track structure, which can at least solve some of the defects in the prior art.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides the following technical solution: a magnetic levitation track beam, comprising a plurality of main beam sections arranged in sequence along the driving direction, and also comprising a splicing structure for eliminating the misaligned load effect force between the end faces facing each other of two adjacent main beam sections, the two adjacent main beam sections are connected by the splicing structure, and the upper surfaces of the two adjacent main beam sections after connection are in the same plane.

[0006] Furthermore, the splicing structure includes a ridge group and a groove group for the ridge group to be inserted into. In two adjacent main beam sections, one of the main beams is provided with at least a ridge from the ridge group on its end face relative to the other main beam, and the other main beam is provided with at least a groove from the groove group on its end face relative to the other main beam, and the ridges are inserted into the grooves.

[0007] Further, some of the ridges in the ridge group are arranged on the end surface of one of the main beams that is adjacent to its adjacent main beam, and the lower surface of the ridge and the lower surface of the corresponding main beam are located in the same plane, and some of the grooves in the groove group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the size of the ridge is not less than the size of the groove, and the ridge is snapped into the groove; another part of the ridges in the ridge group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the lower surface of the ridge and the lower surface of the corresponding main beam are located in the same plane, and another part of the grooves in the groove group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the size of the ridge is not less than the size of the groove, and the ridge is snapped into the groove.

[0008] Furthermore, a plurality of supports are provided on the lower surface of the ridge of each main beam.

[0009] Furthermore, the connection line between the supports and the beam gap between two adjacent main beams are located on the same vertical plane.

[0010] Furthermore, each of the main beams has two supports.

[0011] Furthermore, there are multiple ridges and grooves, which are arranged in one-to-one correspondence, and a ridge on one main beam is inserted into a corresponding groove of another main beam.

[0012] Furthermore, the number of the ridges and the number of the grooves are both three, one of the main beams has two ridges and one groove, and the other main beam has one ridge and two grooves, in one of the main beams, the groove is located between the two ridges, and in the other main beam, the ridge is located between the two grooves, and the connecting line of the ridges and the grooves on one of the main beams and the connecting line of the ridges and the grooves on the other main beam are both perpendicular to the driving direction.

[0013] Furthermore, each of the main beams has a transverse partition on both sides extending away from the middle of its main body, the upper surface of each transverse partition is a plane, and the lower surface is an inclined surface inclined at the outer edge of the transverse partition toward the middle of the main beam.

[0014] An embodiment of the present invention provides another technical solution: a magnetic levitation track structure, comprising the above-mentioned magnetic levitation track beam and another track beam arranged above the magnetic levitation track beam, the beam gap of the other track beam is aligned with the beam gap between two adjacent main beam sections of the magnetic levitation track beam.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The splicing structure eliminates the misalignment load effect between the end faces of the two adjacent main beams, prevents the end faces of the main beams from misaligning, and ensures the smoothness of high-speed train operation.

[0017] 2. The longitudinal spacing between the supports of adjacent main beams is reduced, which can correspondingly reduce the longitudinal size of the supporting pier caps, reduce the material used in the piers, save the investment in the lower structure, and at the same time, the overall size of the piers is reduced, which can also improve the landscape under the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram (schematic diagram of the top of the beam) of a magnetic levitation track beam provided in an embodiment of the present invention;

[0019] Figure 2 A three-dimensional diagram (beam bottom schematic diagram) of the connection of two main beams of a magnetic levitation track beam provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 1 The main view;

[0021] Figure 4 for Figure 1 Exploded diagram of

[0022] Figure 5 for Figure 2 Exploded diagram of

[0023] In the accompanying drawings: 1-main beam; 10-upper surface of the main beam; 11-lower surface of the main beam; 12-beam gap; 20-convex ridge; 21-groove; 3-cross partition; 30-plane; 31-inclined surface; 32-outer edge of the cross partition; 4-support. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 5, an embodiment of the present invention provides a magnetic levitation track beam, comprising a plurality of sections of main beams 1 arranged in sequence along the driving direction, and in addition, a splicing structure for eliminating the misalignment load effect between the end faces of two adjacent sections of the main beams 1 facing each other, the two adjacent sections of the main beams 1 are connected by the splicing structure, and the upper surfaces 10 of the two adjacent sections of the main beams after connection are in the same plane. In this embodiment, the splicing structure eliminates the misalignment load effect between the end faces of the two adjacent sections of the main beams 1 facing each other, prevents the end faces of the main beams 1 from misalignment, and ensures the smoothness of high-speed train driving. Specifically, the splicing structure includes a ridge group and a groove group for the ridge group to be inserted into. In two adjacent sections of the main beams 1, one section of the main beam 1 is provided with at least a ridge 20 in the ridge group on the end face relative to the other section of the main beam 1, and the other section of the main beam 1 is provided with at least a groove 21 in the groove group on the end face relative to the other section of the main beam 1, and the ridge 20 is inserted into the groove 21. In this embodiment, two adjacent sections of the main beam 1 are connected by a convex-concave form of cooperation. The ridge 20 and the groove 21 are arranged on the end face of the main beam 1. The end faces of the two main beams 1 are arranged opposite each other. When installed in cooperation, the ridge 20 can be inserted into the groove 21 to complete the splicing. Compared with the existing direct docking of the two end faces, the splicing in the concave-convex form can limit the misalignment between the opposite end faces of the two main beams 1.

[0026] To optimize the above solution, please refer to Figures 1 to 5, part of the ribs 20 in the rib group are arranged on the end surface of one of the main beams 1 facing the adjacent main beam 1, and the lower surface of the rib 20 and the lower surface 11 of the main beam corresponding thereto are located in the same plane, part of the grooves 21 in the groove group are arranged on the end surface of another main beam 1 facing the adjacent main beam 1, and the size of the rib 20 is not less than the size of the groove 21, and the rib 20 is snapped into the groove 21; another part of the ribs 20 in the rib group are arranged on the end surface of another main beam 1 facing the adjacent main beam 1, and the lower surface of the rib 20 and the lower surface 11 of the main beam corresponding thereto are located in the same plane, another part of the grooves 21 in the groove group are arranged on the end surface of another main beam 1 facing the adjacent main beam 1, and the size of the rib 20 is not less than the size of the groove 21, and the rib 20 is snapped into the groove 21. In this embodiment, the end surface of the same main beam 1 is provided with both a ridge 20 and a groove 21. For the convenience of description, two adjacent main beams 1 are defined as the first main beam 1 and the second main beam 1, respectively. Then, the ridge 20 of the first main beam 1 can be inserted into the groove 21 of the second main beam 1, and the ridge 20 of the second main beam 1 can be inserted into the first groove 21, so that the two main beams 1 are connected. In order to facilitate the subsequent installation of the support 4, the lower surface of the ridge 20 is directly integrated with the lower surface 11 of the main beam, so that the structural integrity of the ridge 20 and the main beam 1 can be ensured. Of course, the ridge 20 and the groove 21 can be directly formed on the main beam 1 as a part of the main beam 1. In addition, the size of the ridge 20 is set to be not less than the size of the groove 21. If the size is the same, the ridge 20 is just inserted into the groove 21. If the size of the ridge 20 is slightly larger, it can be inserted into the groove 21 to form an interference fit, which can make the structure more stable. Of course, this embodiment illustrates the case where the same end face is provided with both ridges 20 and grooves 21. It is also feasible to have only a single structure, that is, one end face has only the groove 21 and the other end face has only the ridges 20.

[0027] As an optimization solution of the embodiment of the present invention, please refer to Figure 2 and Figure 5 , a plurality of supports 4 are provided on the lower surface of the ridge 20 of each main beam 1. Preferably, the connection line between the supports 4 and the beam gap 12 between two adjacent main beams 1 are located on the same vertical plane. Each main beam 1 has two supports 4. In this embodiment, the supports 4 can be directly provided on the ridge 20, which is equivalent to being provided on the lower surface 11 of the main beam. It is ensured that the connection line between the four supports 4 and the beam gap 12 between two adjacent main beams 1 are located on the same vertical plane, and the longitudinal spacing between the supports 4 between adjacent main beams 1 is reduced, which can correspondingly reduce the longitudinal size of the matching pier top cap, reduce the material used in the pier, save the investment in the lower structure, and at the same time, the overall size of the pier is reduced, which can also improve the landscape under the bridge.

[0028] As an optimization solution of this embodiment, please refer to Figures 1 to 5 , there are multiple ridges 20 and grooves 21, and they are arranged in one-to-one correspondence, and the ridges 20 on one main beam 1 are inserted into the grooves 21 corresponding to the other main beam 1. Preferably, the number of the ridges 20 and the grooves 21 are both three, one of the main beams 1 has two ridges 20 and one groove 21, and the other main beam 1 has one ridge 20 and two grooves 21, in one of the main beams 1, the groove 21 is located between the two ridges 20, and in the other main beam 1, the ridge 20 is located between the two grooves 21, and the connecting line of the ridges 20 and the grooves 21 on one main beam 1 and the connecting line of the ridges 20 and the grooves 21 on the other main beam 1 are both perpendicular to the driving direction. In this embodiment, there are multiple ridges 20 and grooves 21, and one ridge 20 is arranged between two grooves 21, and one groove 21 is arranged between two ridges 20, and the connecting line of the ridge 20 and the groove 21 on the main beam 1 and the connecting line of the ridge 20 and the groove 21 on the other main beam 1 are perpendicular to the driving direction. In this way, no matter how the two main beams 1 are misaligned, at least the ridge 20 can be against the groove wall of the corresponding groove 21 to limit the misalignment in this direction. For example, Figure 5 As shown, if misalignment occurs, the two ridges 20 of the left main beam 1 will abut against the walls of the two grooves 21 of the right main beam 1, and the ridges 20 of the right main beam 1 can also abut against the walls of the middle groove 21 of the left main beam 1. In this way, no matter how the misalignment occurs, it will be resisted and the load effect force during the misalignment will be eliminated.

[0029] As an optimization solution of the embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 4 as well as Figure 5 , each of the main beams 1 has a transverse diaphragm 3 extending away from the middle of the main body on both sides, and the upper surface of each transverse diaphragm 3 is a plane 30, and the lower surface is an inclined surface 31 arranged at the outer edge 32 of the transverse diaphragm toward the middle of the main beam 1. In this embodiment, the transverse diaphragm 3 is used for the maglev train to hold, and the structure with the inclined surface 31 can increase the thickness of the transverse diaphragm 3, which has a better use effect than a flat plate, is not easy to be damaged, and has a longer service life.

[0030] As an optimization scheme of the embodiment of the present invention, the track beam can be constructed by prefabricating and erecting. The whole-span beam is prefabricated according to the design drawings and then hoisted onto the bridge. The beam is transported to the bridge location by a beam transporter and then erected. It can also be constructed by cast-in-place method.

[0031] See also Figures 1 to 5The embodiment of the present invention provides a magnetic levitation track structure, including the above-mentioned magnetic levitation track beam and another track beam arranged above the magnetic levitation track beam, the beam gap 12 of the other track beam is aligned with the beam gap 12 between two adjacent main beams 1 of the magnetic levitation track beam. In this embodiment, considering the form of beam on beam, the above-mentioned magnetic levitation track beam can also be used, and it is only necessary to align the beam gap 12 of the upper track beam with the beam gap 12 between two adjacent main beams 1 of the magnetic levitation track beam. The effect brought by the use of the above-mentioned track beam is not repeated in this embodiment.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic levitation track beam, comprising a plurality of main beams arranged in sequence along the driving direction, characterized in that: It also includes a splicing structure for eliminating the misaligned load effect force between the end faces of two adjacent main beams, the two adjacent main beams are connected by the splicing structure, and the upper surfaces of the two adjacent main beams after connection are in the same plane, the splicing structure includes a ridge group and a groove group for the ridge group to be inserted into, and in the two adjacent main beams, one of the main beams is provided with at least a ridge in the ridge group on the end face relative to the other main beam, and the other main beam is provided with at least a groove in the groove group on the end face relative to the other main beam, the ridge is inserted into the groove, and some of the ridges in the ridge group are provided on the end face of one of the main beams facing the adjacent main beam, and the lower surface of the ridge and the groove group are connected to the ridge group. The lower surfaces of the corresponding main beams are located in the same plane, and some of the grooves in the groove group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the size of the ridge is not less than the size of the groove, and the ridge is snapped into the groove; another part of the ridges in the ridge group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the lower surface of the ridge and the lower surface of the corresponding main beam are located in the same plane, and another part of the grooves in the groove group are arranged on the end surface of another main beam that is adjacent to its adjacent main beam, and the size of the ridge is not less than the size of the groove, and the ridge is snapped into the groove, and a number of supports are provided on the lower surface of the ridges of each of the main beams, and the number of the ridges and the number of the grooves are both three.

2. The magnetic suspension track beam according to claim 1, characterized in that: The connecting line between the supports and the beam gap between two adjacent main beams are located on the same vertical plane.

3. The magnetic suspension track beam according to claim 1, characterized in that: Each of the main beams has two supports.

4. The magnetic suspension track beam according to claim 1, characterized in that: Each of the convex ridges is arranged in one-to-one correspondence with each of the concave grooves, and a convex ridge on one main beam is inserted into a corresponding concave groove of another main beam.

5. The magnetic suspension track beam according to claim 4, characterized in that: One of the main beams has two ridges and one groove, and the other main beam has one ridge and two grooves. In one of the main beams, the groove is located between the two ridges, and in the other main beam, the ridge is located between the two grooves. The connecting line of the ridge and the groove on one of the main beams and the connecting line of the ridge and the groove on the other main beam are both perpendicular to the driving direction.

6. The magnetic suspension track beam according to claim 1, characterized in that: Both sides of each main beam are provided with a transverse partition extending away from the middle of the main body. The upper surface of each transverse partition is a plane, and the lower surface is an inclined surface inclined toward the middle of the main beam at the outer edge of the transverse partition.

7. A magnetic levitation track structure, characterized in that: It comprises a magnetic levitation track beam as claimed in any one of claims 1 to 6 and another track beam arranged above the magnetic levitation track beam, wherein the beam gap of the other track beam is aligned with the beam gap between two adjacent main beam sections of the magnetic levitation track beam.

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