A conventional electromagnetic levitation track beam structure and its construction method

Abstract

The present invention belongs to the technical field of the construction of conventional-conduction high-speed maglev bridges, and specifically relates to a structure of a conventional-conduction maglev track beam and its construction method, which includes a precast main body part of the track beam, a cast-in-place bridge deck part of the track beam, a standard component rack, and functional components; side edge protruding blocks are provided on both sides of the precast main body part of the track beam, the standard component rack is arranged on the precast main body part of the track beam, the standard component rack includes two L-shaped side plates, and the horizontal precise adjustment screws on the vertical sections of the two L-shaped side plates respectively abut against the side edge protruding blocks on both sides, the elevation precise adjustment screws on the horizontal sections of the two L-shaped side plates respectively abut against the top surface of the precast main body part of the track beam, and the cast-in-place bridge deck part of the track beam is poured between the two L-shaped side plates. The present invention not only greatly reduces the content of high-precision manufacturing, simplifies the connection measures and installation procedures, but also has strong controllability in the production process, better quality assurance, lower cost, and is conducive to the implementation of standardized operation of the production line.

Description

Technical Field

[0001] The invention belongs to the technical field of the construction of conventional conductive high-speed maglev bridges, and particularly relates to a structure of a conventional conductive maglev track beam and a construction method thereof. Background Art

[0002] From the perspective of the manufacturing of the track bridges of the current conventional conductive maglev lines, functional components such as sliding surfaces, guide plates, and maglev spindles are respectively positioned and installed on the bridge deck. Although the practice is successful, the cost is very high. Because the conventional conductive high-speed maglev has extremely high requirements for the smoothness of the long-spindle track, there are strict requirements for the manufacturing and installation accuracy of relevant functional components. Therefore, not only the labor cost of manufacturing and processing is very high, but also the installation cost is very high, and the project cost of the maglev railway for building long main lines is too high. Summary of the Invention

[0003] In order to overcome the deficiencies existing in the above-mentioned prior art, the purpose of the invention is to provide a structure of a conventional conductive maglev track beam and a construction method thereof with high precision, high efficiency, low cost, low difficulty, and easy implementation.

[0004] To achieve the above purpose, the technical solution of the invention is a structure of a conventional conductive maglev track beam, which includes a precast main body part of the track beam, a cast-in-place bridge deck part of the track beam, a standard component frame, and functional components installed at both ends of the standard component frame; the standard component frame includes two L-shaped side plates arranged oppositely in the transverse direction, and transverse precise adjustment screws and elevation precise adjustment screws are respectively installed on the vertical section and the horizontal section of the L-shaped side plate; side edge convex blocks are provided on both sides of the precast main body part of the track beam, the standard component frame is arranged on the precast main body part of the track beam, and the transverse precise adjustment screws on the two L-shaped side plates respectively abut against the side edge convex blocks on both sides of the precast main body part of the track beam, and the elevation precise adjustment screws on the two L-shaped side plates respectively abut against the top surface of the precast main body part of the track beam, and the cast-in-place bridge deck part of the track beam is poured at a position between the two L-shaped side plates on the top surface of the precast main body part of the track beam.

[0005] Further, two of the transverse precise adjustment screws are installed at intervals along the longitudinal direction on the vertical section of each L-shaped side plate, and two of the elevation precise adjustment screws are installed at intervals along the longitudinal direction on the horizontal section of each L-shaped side plate.

[0006] Further, the standard component frame further includes a transverse connecting plate, the two L-shaped side plates are connected by the transverse connecting plate, and a plurality of holes penetrating along the longitudinal direction are provided on the transverse connecting plate.

[0007] Further, the standard component frame further includes functional component mounting parts provided on the outer sides of the vertical sections of the L-shaped side plates, and the functional components at both ends of the standard component frame are respectively mounted on the functional component mounting parts on the outer sides of the vertical sections of the two L-shaped side plates.

[0008] Furthermore, the functional component includes a sliding surface, a side guide plate, and a maglev spindle; the sliding surface is provided on the top surface of the functional component mounting part, the side guide plate is provided on the side surface of the functional component mounting part, and the maglev spindle is provided on the bottom surface of the functional component mounting part.

[0009] Further, a first stainless steel plate is embedded at a position corresponding to the elevation precise adjustment screw on the top surface of the precast main body part of the track beam, and the elevation precise adjustment screw abuts against the first stainless steel plate.

[0010] Further, a second stainless steel plate is embedded at a position corresponding to the lateral precise adjustment screw on the inner side surface of the side edge convex block, and the lateral precise adjustment screw abuts against the second stainless steel plate.

[0011] The present invention also provides a construction method for the above-mentioned conventional conductive maglev track beam structure, including the following steps:

[0012] 1) Precast the precast main body part of the track beam in the factory and transport it to the construction site for installation;

[0013] 2) Manufacture the standard component frame and the functional component in the factory, assemble the functional component onto the standard component frame, and transport it to the construction site;

[0014] 3) Hoist the whole assembled by the functional component and the standard component frame onto the top surface of the precast main body part of the track beam, and make the two L-shaped side plates of the standard component frame located between the side edge convex blocks on both sides of the precast main body part of the track beam;

[0015] 4) Rotate the lateral precise adjustment screw and the elevation precise adjustment screw on the L-shaped side plate to precisely adjust the position of the standard component frame on the top surface of the precast main body part of the track beam, so as to accurately position the functional component;

[0016] 5) Pour the cast-in-place bridge deck part of the track beam between the two L-shaped side plates of the standard component frame and pour part of the standard component frame into it, so as to accurately fix the functional component on the track beam.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) In the present invention, the functional components and the standard component frames are precisely manufactured in the factory, and the functional components such as the sliding surface, the guide plate, and the maglev spindle are assembled on the relatively stable standard component frames, so that the manufacturing accuracy is relatively easy to ensure; the other parts are constructed and erected by adopting the conventional bridge construction methods, and then the whole assembled by the functional components and the standard component frames is used as a standard component and accurately positioned on-site through the elevation accurate adjustment screws and the lateral accurate adjustment screws and applied to the bridges along the whole line. This not only greatly reduces the content of high-precision manufacturing, simplifies the connection measures and the installation procedures, but also has strong controllability in the production process, better quality assurance, lower cost, and is conducive to the implementation of the standardized operation of the production line;

[0019] (2) The standard component frame in the present invention has a small weight, is very easy to transport and erect, and requires less force in the fine adjustment process by screwing the screws, which is conducive to obtaining an accurate adjustment effect;

[0020] (3) The standard component frame equipped with the functional components in the present invention can adapt to various line conditions such as straight sections, curve sections, and straight-curve transition sections. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Schematic diagram of the structure of the conventional maglev track beam provided by the embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the conventional maglev track beam provided by the embodiment of the present invention;

[0024] Figure 3 Schematic diagram of the structure of the conventional maglev track beam provided by the embodiment of the present invention;

[0025] Figure 4 Top view of the standard component frame provided by the embodiment of the present invention;

[0026] Figure 5 For Figure 3 Enlarged schematic diagram at position A in

[0027] In the figure: 1. Prefabricated main part of the track beam; 2. Cast-in-place bridge deck part of the track beam; 3. Sliding surface; 4. Guide plate; 5. Maglev spindle; 6. Standard component rack; 7. Hole; 8. L-shaped side plate; 9. Elevation precise adjustment screw; 10. Lateral precise adjustment screw; 11. Functional component installation part; 12. Side edge convex block; 13. Longitudinal fixed support; 14. Longitudinal movable support; 15. Crack-crossing structure. Specific implementation mode

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0030] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] Such as Figures 3 - 5As shown in the figure, this embodiment provides a structure of a conventional electromagnetic levitation track beam, which includes a precast main body part 1 of the track beam, a cast-in-place bridge deck part 2 of the track beam, a standard component frame 6, and functional components installed at both ends of the standard component frame 6; the standard component frame 6 includes two L-shaped side plates 8 arranged oppositely in the transverse direction, and transverse precise adjustment screws 10 and elevation precise adjustment screws 9 are respectively installed on the vertical section and the horizontal section of the L-shaped side plate 8; side edge convex blocks 12 are provided on both sides of the precast main body part 1 of the track beam, the standard component frame 6 is arranged on the precast main body part 1 of the track beam, and the transverse precise adjustment screws 10 on the two L-shaped side plates 8 respectively abut against the side edge convex blocks 12 on both sides of the precast main body part 1 of the track beam, and the elevation precise adjustment screws 9 on the two L-shaped side plates 8 respectively abut against the top surface of the precast main body part 1 of the track beam, and the cast-in-place bridge deck part 2 of the track beam is poured at the position between the two L-shaped side plates 8 on the top surface of the precast main body part 1 of the track beam. In this embodiment, functional components such as the sliding surface 3, the guide plate 4, and the maglev spindle 5 are precisely manufactured in the factory and assembled on a relatively stable standard component frame 6, avoiding connection to the concrete beam body by relying on anchor bolts, and can most reliably ensure the manufacturing accuracy of the standard component frame; for the construction of the concrete track beam, no special engineering measures are required, and it can be carried out according to the usual construction method of pre-stressed concrete precast beams; then the whole assembled by the functional components and the standard component frame 6 is hoisted as a standard part onto the precast main body part 1 of the track beam for general construction, and the standard part is precisely positioned on site by rotating the transverse precise adjustment screws 10 and the elevation precise adjustment screws 9, and then the cast-in-place bridge deck part 2 of the track beam is poured and the part between the two L-shaped side plates 8 of the standard component frame 6 is wrapped therein, so as to realize the precise fixation of the functional components on the track beam, which not only greatly reduces the content of high-precision manufacturing, simplifies the connection measures and installation procedures, but also has strong controllability in the production process, better quality assurance, lower cost, and is conducive to the implementation of standardized operation of the production line.

[0032] The standard component frame 6 of this embodiment is manufactured with high precision in the factory, its length is 3.096 meters, which is the length of a functional component, and the sliding surface 3, the guide plate 4, the maglev spindle 5, etc. are precisely installed thereon; the standard component frame 6 can be made of steel structure, with a small weight, very easy to transport and erect, and requires less force in the fine adjustment process by turning the screws, which is conducive to obtaining precise adjustment effects.

[0033] The structure of the conventional electromagnetic levitation track beam and its construction method provided in this embodiment are applied to continuous beams, and a two-span continuous beam body is used for illustration; as Figure 1 and Figure 2As shown in the figure, a longitudinal fixed support 13 is provided between two longitudinal movable supports 14, and at the position of the longitudinal movable supports 14 is the cross-seam structure 15 of two beam bodies; on the precast main body part 1 of the track beam of the beam body, the standard component rack 6 is arranged along the bridge direction, and functional components are installed at both ends of the standard component rack 6 in the transverse bridge direction.

[0034] Further, two of the transverse precise adjustment screws 10 are installed at intervals along the longitudinal direction on the vertical sections of the L-shaped side plates 8, and two of the elevation precise adjustment screws 9 are installed at intervals along the longitudinal direction on the horizontal sections of the L-shaped side plates 8. As Figure 4 shown in the figure, the 4 transverse precise adjustment screws 10 and 4 elevation precise adjustment screws 9 on the 2 L-shaped side plates 8 in this embodiment are respectively distributed at the four corner points of the standard component rack 6. By rotating the elevation precise adjustment screws 9 at the four corner points, the positioning elevation is adjusted, and by rotating the transverse precise adjustment screws 10 at the four corner points, the plane positioning is adjusted, so that the standard component rack 6 precisely installed with the sliding surface 3, the guide plate 4, the magnetic levitation spindle 5, etc. is precisely positioned on the precast main body part 1 of the track beam; and this standard component rack 6 can adapt to various line conditions such as straight sections, curve sections, and straight-curve transition sections. If this standard component rack 6 is placed on a straight and flat slope line, it is a rectangle with very precise length and width on the plane, and the height and elevation are equal; if placed on a straight slope, the left and right heights and elevations are equal, and the slope is adapted by the elevation difference between the front and back; if placed on a circular curve flat slope, the front and back heights and elevations are equal, and the superelevation is adjusted by the elevation difference between the left and right, and the center line deflection is adapted by the method of bisecting the mid-ordinate; if placed on a transition curve flat slope, the three points should have equal elevations, and the other point is either higher or lower to adapt to the distorted deformation of the curve superelevation transition section. At this time, the flat standard component rack 6 is forced to twist, so the standard component rack 6 should be both stable and able to adapt to this small torsional deformation.

[0035] Further, the standard component rack 6 further includes a transverse connecting plate, and the two L-shaped side plates 8 are connected by the transverse connecting plate, and a plurality of holes 7 penetrating along the longitudinal direction are provided on the transverse connecting plate. In this embodiment, the two L-shaped side plates 8 can be connected by a plurality of transverse connecting plates, and the transverse connecting plates are later cast into the cast-in-place bridge deck part 2 of the track beam; by providing a plurality of holes 7 on the transverse connecting plate, the cast-in-place bridge deck parts 2 on both sides of the transverse connecting plate are formed into a whole, ensuring the connection between the standard component rack 6 and the beam body.

[0036] Further, the standard component rack 6 further includes a functional component installation part 11 provided on the outer side of the vertical section of each L-shaped side plate 8, and the functional components at both ends of the standard component rack 6 are respectively installed on the functional component installation parts 11 on the outer sides of the vertical sections of the two L-shaped side plates 8.

[0037] Furthermore, the functional component includes a sliding surface 3, a side guide plate 4, and a magnetic levitation spindle 5; the sliding surface 3 is disposed on the top surface of the functional component mounting portion 11, the side guide plate 4 is disposed on the side surface of the functional component mounting portion 11, and the magnetic levitation spindle 5 is disposed on the bottom surface of the functional component mounting portion 11.

[0038] Further, a first stainless steel plate is embedded at a position corresponding to the elevation precision adjustment screw 9 on the top surface of the precast main body portion 1 of the track beam. The elevation precision adjustment screw 9 abuts against the first stainless steel plate. Further, a second stainless steel plate is embedded at a position corresponding to the lateral precision adjustment screw 10 on the inner side surface of the side edge convex block 12. The lateral precision adjustment screw 10 abuts against the second stainless steel plate. In this embodiment, stainless steel plates can be embedded in the approximate area corresponding to the elevation precision adjustment screw 9 on the top surface of the precast main body portion 1 of the track beam and in the position area corresponding to the lateral precision adjustment screw 10 on the inner side surface of the side edge convex block 12 to reduce the frictional resistance during adjustment and ensure high-precision positioning.

[0039] This embodiment also provides a construction method for the above-described conventional magnetic levitation track beam structure, including the following steps:

[0040] 1) Prefabricate the precast main body portion 1 of the track beam in a factory and transport it to the construction site for installation. There is no need to adopt special engineering measures, and it can be carried out according to the construction method of ordinary precast prestressed concrete beams.

[0041] 2) Prefabricate the standard component frame 6 in a factory and precisely manufacture functional components such as the sliding surface 3, the guide plate 4, and the magnetic levitation spindle 5, and assemble the functional components such as the sliding surface 3, the guide plate 4, and the magnetic levitation spindle 5 to the corresponding positions on the standard component frame 6 respectively, so that their relative dimensions and positional relationships meet the precision requirements, and transport them to the construction site.

[0042] 3) Hoist the whole assembled by the functional component and the standard component frame 6 as a standard component onto the top surface of the precast main body portion 1 of the track beam, and make the two L-shaped side plates 8 of the standard component frame 6 located between the side edge convex blocks 12 on both sides of the precast main body portion 1 of the track beam.

[0043] 4) Rotate the lateral precision adjustment screw 10 and the elevation precision adjustment screw 9 on the L-shaped side plate 8 to precisely adjust the position of the standard component frame 6 on the top surface of the precast main body portion 1 of the track beam and accurately position the functional component.

[0044] 5) Use the two L-shaped side plates 8 of the standard component frame 6 as the side formwork of the cast-in-place bridge deck part 2 of the track beam. Pour the cast-in-place bridge deck part 2 of the track beam between the two L-shaped side plates 8 of the standard component frame 6, and pour the transverse connection plate of the standard component frame 6 into it to accurately fix the functional components on the track beam, and then perform maintenance.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A structure of a conventional conductive magnetic levitation track beam, characterized in that: It includes a precast main body part of the track beam, a cast-in-place bridge deck part of the track beam, a standard component rack, and functional components installed at both ends of the standard component rack; the standard component rack includes two L-shaped side plates arranged oppositely in the transverse direction, and transverse precise adjustment screws and elevation precise adjustment screws are respectively installed on the vertical section and the horizontal section of the L-shaped side plate; side edge convex blocks are provided on both sides of the precast main body part of the track beam, the standard component rack is arranged on the precast main body part of the track beam, and the transverse precise adjustment screws on the two L-shaped side plates respectively abut against the side edge convex blocks on both sides of the precast main body part of the track beam, and the elevation precise adjustment screws on the two L-shaped side plates respectively abut against the top surface of the precast main body part of the track beam, and the cast-in-place bridge deck part of the track beam is poured at a position on the top surface of the precast main body part of the track beam between the two L-shaped side plates; the standard component rack further includes a transverse connecting plate, the two L-shaped side plates are connected by the transverse connecting plate, and a plurality of holes penetrating longitudinally are provided on the transverse connecting plate; the standard component rack is made of steel structure; the construction method of the conventional electromagnetic levitation track beam structure includes the following steps: 1) Prefabricate the precast main body part of the track beam in the factory and transport it to the construction site for installation; 2) Manufacture the standard component rack and the functional components in the factory, assemble the functional components onto the standard component rack, and transport them to the construction site; 3) Hoist the whole assembled by the functional components and the standard component rack onto the top surface of the precast main body part of the track beam, and make the two L-shaped side plates of the standard component rack located between the side edge convex blocks on both sides of the precast main body part of the track beam; 4) Rotate the transverse precise adjustment screws and the elevation precise adjustment screws on the L-shaped side plates to precisely adjust the position of the standard component rack on the top surface of the precast main body part of the track beam, so as to precisely position the functional components; 5) Pour the cast-in-place bridge deck part of the track beam between the two L-shaped side plates of the standard component rack, and pour part of the standard component rack into it, so as to precisely fix the functional components on the track beam.

2. The structure of a conventional electromagnetic levitation track beam according to claim 1, characterized in that: Two of the transverse precise adjustment screws are installed at intervals longitudinally on the vertical section of each L-shaped side plate, and two of the elevation precise adjustment screws are installed at intervals longitudinally on the horizontal section of each L-shaped side plate.

3. The structure of a conventional electromagnetic levitation track beam according to claim 1, characterized in that: The standard component rack further includes functional component installation parts arranged outside the vertical sections of the L-shaped side plates, and the functional components at both ends of the standard component rack are respectively installed on the functional component installation parts outside the vertical sections of the two L-shaped side plates.

4. The structure of a conventional electromagnetic levitation track beam according to claim 3, characterized in that: The functional components include a sliding surface, a side guide plate, and a magnetic levitation spindle; the sliding surface is arranged on the top surface of the functional component installation part, the side guide plate is arranged on the side surface of the functional component installation part, and the magnetic levitation spindle is arranged on the bottom surface of the functional component installation part.

5. The structure of a conventional electromagnetic levitation track beam according to claim 1, characterized in that: First stainless steel plates are embedded at positions on the top surface of the precast main body part of the track beam corresponding to the elevation precise adjustment screws, and the elevation precise adjustment screws abut against the first stainless steel plates.

6. The structure of a conventional electromagnetic levitation track beam according to claim 1, characterized in that: A second stainless steel plate is embedded at a position on the inner side of the side edge convex block corresponding to the position of the transverse precise adjustment screw, and the transverse precise adjustment screw abuts against the second stainless steel plate.

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