Rail beam integrated with beam

Abstract

The embodiment of the application provides a beam-rail integrated track beam. The beam-rail integrated track beam comprises a concrete track slab, a steel box beam and a steel-concrete connecting piece connecting the concrete track slab and the steel box beam. The steel box beam comprises a bottom plate, a web plate, a cross beam, a web plate top plate and a cross beam top plate. The web plate and the cross beam are located on the bottom plate, and the bottom plate, the web plate and the cross beam are perpendicular to each other in pairs. The web plate top plate and the cross beam top plate are located above the web plate and the cross beam respectively, and expose part of the bottom plate. The embodiment of the application significantly reduces the self weight and the cross section height of the beam structure by arranging the steel box beam. Only the web plate top plate and the cross beam top plate are arranged, the top plate is close to the compression zone of the beam cross section under the train load, local instability and cross beam deformation are avoided, the track structure and the steel box beam structure can be prefabricated in a factory, work efficiency is improved, and manufacturing precision is ensured. The beam-rail integration has the advantages of good integrity and large structural rigidity, and is more suitable for the high-speed driving needs of the maglev train.

Description

Technical Field

[0001] This application relates to the field of high-speed maglev transportation technology, and more specifically, to a track beam that integrates beam and track. Background Technology

[0002] With the rapid development of society, economy, and transportation, some cities have begun to experiment with new modes of transportation, such as high-speed maglev trains, to replace existing rail transit. Maglev trains are a new type of rail transportation that relies on the unique properties of electromagnetic fields—such as "like poles repel and unlike poles attract"—to lift the vehicle, suspending the entire train on the track. They use electromagnetic force for guidance and linear motors to directly convert electrical energy into propulsion.

[0003] Currently, medium- and low-speed maglev track beams consist of two parts: the bridge structure and the track structure. Conventional high-speed maglev transportation uses a track beam structure that integrates a concrete bridge and track components. The track components are installed at the two cantilevered ends of the bridge's beam structure top slab to form the track beam. Alternatively, the sliding top plate, magnetic guide plate, and stator core of the track components are directly embedded in the concrete beam to form the track beam. Existing technologies have several problems: 1. The structure where the track components are installed at the two cantilevered ends of the bridge's beam structure top slab to form the track beam requires extremely high manufacturing precision for both the track components and the bridge beam structure, resulting in complex track beam construction processes and significantly increased costs for prefabrication and erection. 2. During the installation of the track components, the designed track surface elevation and alignment must be achieved, making the track surface elevation adjustment process extremely complex. 3. During high-speed maglev operation, changes in the track surface due to settlement, concrete shrinkage, and creep make track alignment maintenance very inconvenient.

[0004] In summary, existing technologies for track beams present technical challenges such as extremely high requirements for structural manufacturing precision, complex track beam construction processes, significantly increased costs for prefabrication and erection, extremely complex track elevation adjustment processes during construction, and very inconvenient track alignment maintenance. Summary of the Invention

[0005] This application addresses the shortcomings of existing methods by proposing an integrated beam-track beam to solve the technical problems of existing track beams, such as extremely high requirements for structural manufacturing precision, complex track beam construction processes, significantly increased costs for prefabrication and erection, extremely complex track surface elevation adjustment processes during construction, and very inconvenient track alignment maintenance.

[0006] This application provides an integrated track beam, comprising a concrete track slab, a steel box girder, and a steel-concrete connector linking the concrete track slab and the steel box girder.

[0007] The steel box girder includes a bottom plate, a web, a crossbeam, a top plate of the web, and a top plate of the crossbeam. The web and the crossbeam are both located on the bottom plate. The bottom plate, the web, and the crossbeam are perpendicular to each other. The top plate of the web and the top plate of the crossbeam are located above the web and the crossbeam, respectively, with a portion of the bottom plate exposed.

[0008] In some embodiments of this application, the steel box girder includes two web top plates and multiple crossbeam top plates. The two web top plates are parallel to each other, and the two ends of each crossbeam top plate are respectively connected to the two web top plates to form multiple rectangular openings distributed in an array.

[0009] In some embodiments of this application, the concrete track slab includes a concrete main board, a positioning steel plate, a sliding top plate, and a magnetic guide plate;

[0010] The sliding top plate is located on the side surface of the concrete main plate away from the steel box girder, the positioning steel plate is located on the side surface of the concrete main plate close to the steel box girder, and the magnetic guide plate is located on the concrete main plate and connects the sliding top plate and the positioning steel plate.

[0011] In some embodiments of this application, the concrete track slab further includes a stator core and a long stator coil, the stator core being connected to the positioning steel plate, and the long stator coil being sleeved around the stator core.

[0012] In some embodiments of this application, the concrete track slab further includes a pre-embedded steel sleeve and anchor bolts. The pre-embedded steel sleeve is embedded in the concrete main plate. The positioning steel plate has a through hole. The orthographic projection of the pre-embedded steel sleeve on the positioning steel plate coincides with the through hole. The anchor bolt passes through the stator core, the through hole of the positioning steel plate, and is bolted to the pre-embedded steel sleeve.

[0013] In some embodiments of this application, the concrete track slab further includes longitudinal prestressing tendons and transverse prestressing tendons, with a plurality of longitudinal prestressing tendons and a plurality of transverse prestressing tendons interlacing to form a mesh structure, the longitudinal prestressing tendons extending along the longitudinal direction of the bridge, and the transverse prestressing tendons extending along the transverse direction of the bridge.

[0014] In some embodiments of this application, the steel box girder further includes web stiffeners, bottom plate stiffeners, and crossbeam stiffeners. The web stiffeners extend along the bridge direction and are perpendicular to the web. The bottom plate stiffeners extend along the bridge direction and are perpendicular to the bottom plate. The crossbeam stiffeners are perpendicular to the crossbeams and the bottom plate.

[0015] In some embodiments of this application, the steel-concrete connector includes a cluster of shear studs, and the concrete track slab has multiple through-holes. The cluster of shear studs passes through the through-holes and is fixedly connected to the steel box girder.

[0016] In some embodiments of this application, the clustered shear studs are symmetrically distributed about the central axis of the track beam in the transverse direction, and the clustered shear studs are spaced apart in the longitudinal direction.

[0017] In some embodiments of this application, the steel-concrete connector further includes a cast-in-place concrete structure that encloses the shear stud and fills the connection hole.

[0018] The beneficial technical effects of the technical solution provided in this application include: by replacing traditional concrete beams with steel box girders, the self-weight and cross-sectional height of the beam structure are significantly reduced; the top plate of the web and the top plate of the cross beam are only set above the web and the cross beam, and the top plate is closer to the compression zone of the beam section under train load. Compared with a fully enclosed top plate structure, this avoids local instability of the enclosed top plate under compression and avoids adverse effects on the deformation of the cross beam; this embodiment manufactures the track structure and the steel box girder structure separately and connects them with connectors. It can adopt the factory prefabrication method, improve work efficiency, reduce operating costs, and is less affected by environmental factors, which can effectively ensure the manufacturing accuracy of the structure; the track beam adopts an integrated steel-concrete composite structure with good integrity and high structural rigidity, which is more suitable for the high-speed operation needs of maglev trains.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 is a cross-sectional schematic diagram of a beam-rail integrated track beam provided in an embodiment of this application;

[0022] Figure 2 A cross-sectional schematic diagram of another integrated beam-rail track beam provided in an embodiment of this application;

[0023] Figure 3 This is a structural schematic diagram of a steel box girder provided in an embodiment of this application;

[0024] Figure 4 for Figure 1 A schematic cross-sectional view at section 1-1 along the middle edge;

[0025] Figure 5 for Figure 1 A schematic cross-sectional view at section 2-2 along the middle edge;

[0026] Figure 6 for Figure 1 A schematic cross-sectional view at section 3-3 along the middle edge;

[0027] Figure 7 for Figure 1 A schematic diagram of the cross section at section 4-4 along the middle.

[0028] Marked in the image:

[0029] 1 - Concrete track slab, 2 - Steel box girder, 3 - Positioning steel plate, 4 - Stator core, 5 - Long stator coil, 6 - Longitudinal prestressing tendon, 7 - Sliding top plate, 8 - Shear stud, 9 - Magnetic guide plate, 10 - Embedded steel sleeve, 11 - Anchor bolt, 12 - Web plate, 13 - Bottom plate, 14 - Top plate of crossbeam, 15 - Crossbeam stiffening rib, 16 - Web plate stiffening rib, 17 - Bottom plate stiffening rib, 18 - Web plate top plate, 19 - Connecting hole, 20 - Transverse prestressing tendon, 21 - Crossbeam. Detailed Implementation

[0030] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0031] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this application's specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by this art. It should be understood that when we say an element is “connected” to another element, the element may be directly connected to the other element, or it may mean that the element and the other element are connected through an intermediate element. Furthermore, the term “connected” as used herein may include wireless connections.

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0033] This application provides an integrated beam-rail track beam, such as... Figure 1 - Figure 3As shown, Figure 1 A cross-sectional schematic diagram of an integrated beam-rail track beam provided for an embodiment of this application; Figure 2 A cross-sectional schematic diagram of another integrated beam-rail track beam provided in an embodiment of this application; Figure 3 This is a structural schematic diagram of a steel box girder 2 provided in an embodiment of this application.

[0034] The integrated track beam comprises a concrete track slab 1, a steel box girder 2, and steel-concrete connectors linking the concrete track slab 1 and the steel box girder 2.

[0035] The steel box girder 2 includes a bottom plate 13, a web plate 12, a crossbeam 21, a top plate 18 of the web plate, and a top plate 14 of the crossbeam. The web plate 12 and the crossbeam 21 are both located on the bottom plate 13. The bottom plate 13, the web plate 12, and the crossbeam 21 are perpendicular to each other. The top plate 18 of the web plate and the top plate 14 of the crossbeam are located above the web plate 12 and the crossbeam 21, respectively, with a portion of the bottom plate 13 exposed.

[0036] This application embodiment replaces the traditional concrete beam with a steel box girder 2, eliminating the need to reserve reinforcement for the track support platform on the bridge top slab, significantly reducing the self-weight and cross-sectional height of the beam structure, reducing construction procedures, simplifying construction technology, and also lowering project costs.

[0037] In this embodiment, a web top plate 18 and a crossbeam top plate 14 are provided only above the web plate 12 and the crossbeam 21. Under train load, the top plate is closer to the compression zone of the beam section. Compared with a fully enclosed top plate structure, this avoids the local instability of the enclosed top plate under compression and avoids adverse effects on the deformation of the crossbeam 21, effectively saving steel consumption and reducing project cost.

[0038] In this embodiment, the track structure and the steel box girder 2 structure are manufactured separately and then connected by connectors. This can be achieved by using factory prefabrication, which improves work efficiency, reduces operating costs, is less affected by environmental factors, and can effectively ensure the manufacturing accuracy of the structure.

[0039] In this embodiment, the track structure is mainly made of concrete, the bridge structure is mainly made of steel, and the track beam is made of steel-concrete composite structure with connectors to achieve beam-track integration. It has the advantages of good integrity and high structural rigidity. The combined stress has better structural stress performance and is more suitable for the high-speed operation of maglev trains.

[0040] In some embodiments of this application, the steel box girder 2 includes two web top plates 18 and a plurality of crossbeam top plates 14. The two web top plates 18 are parallel to each other, and the two ends of each crossbeam top plate 14 are respectively connected to the two web top plates 18 to form a plurality of rectangular openings distributed in an array.

[0041] In this embodiment, in the cross-section, the two web top plates 18 are respectively located on the two opposite outer sides of the steel box girder 2 and both extend along the bridge longitudinal direction. The crossbeam top plate 14 is perpendicular to both of the two web top plates 18 and bridges the two web top plates 18. The orthographic projections of the web top plates 18 and the crossbeam top plate 14 on the bottom plate 13 are similar to a ladder for climbing.

[0042] Any two adjacent crossbeam top plates 14 and the two web top plates 18 form a hollow rectangular frame, and the rectangular bottom plate 13 is exposed by a rectangular opening.

[0043] Optionally, the multiple crossbeam top plates 14 are arranged at equal intervals. Multiple rectangular openings with equal areas are arranged in an array at equal intervals.

[0044] In some embodiments of the present application, the concrete track slab 1 includes a concrete main board, a positioning steel plate 3, a sliding top plate 7 and a magnetic guiding plate 9;

[0045] As Figure 4 - Figure 7 shown, Figure 4 is Figure 1 a schematic cross-sectional view at the 1-1 section in Figure 5 is Figure 1 a schematic cross-sectional view at the 2-2 section in Figure 6 is Figure 1 a schematic cross-sectional view at the 3-3 section in Figure 7 is Figure 1 a schematic cross-sectional view at the 4-4 section in

[0046] The sliding top plate 7 is located on the surface of the concrete main board away from the steel box girder 2, the positioning steel plate 3 is located on the surface of the concrete main board close to the steel box girder 2, and the magnetic guiding plate 9 is respectively located on the concrete main board and connects the sliding top plate 7 and the positioning steel plate 3.

[0047] In this embodiment, the sliding top plate 7, the magnetic guiding plate 9 and the positioning steel plate 3 are connected end to end in sequence to form a "匚"-shaped structure. In the cross-section, the two "匚"-shaped structures are respectively sleeved on both ends of the concrete main board and extend along the bridge longitudinal direction.

[0048] When pouring the track slab, the welded positioning steel plate 3 and the sliding top plate 7 are pre-buried and fixedly connected to the concrete main board. After being firmly connected, the magnetic guiding plate 9 is vertically arranged on both sides of the track slab and welded to the positioning steel plate 3 and the sliding top plate 7 respectively, and the welding angles are both 90°.

[0049] In this embodiment, the track functional components of the high-speed maglev are installed on both sides of the concrete track slab 1 in advance, reducing the on-site construction volume, ensuring the construction accuracy and improving the construction efficiency.

[0050] In some embodiments of this application, the concrete track slab 1 further includes a stator core 4 and a long stator coil 5, wherein the stator core 4 is connected to the positioning steel plate 3, and the long stator coil 5 is sleeved around the stator core 4.

[0051] In this embodiment, the stator core 4 and the long stator coil 5 are assembled and fixed to the positioning steel plate 3 by anchor bolts 11.

[0052] In some embodiments of this application, the concrete track slab 1 further includes a pre-embedded steel sleeve 10 and an anchor bolt 11. The pre-embedded steel sleeve 10 is pre-embedded in the concrete main plate. The positioning steel plate 3 has a through hole. The orthographic projection of the pre-embedded steel sleeve 10 on the positioning steel plate 3 coincides with the through hole. The anchor bolt 11 passes through the stator core 4, the through hole of the positioning steel plate 3, and is bolted to the pre-embedded steel sleeve 10.

[0053] In this embodiment, before the concrete track slab 1 is laid, high-speed maglev functional components need to be installed on both sides. Circular holes are cut on the positioning steel plate 3 at positions corresponding to the pre-embedded steel sleeve 10. The bottom of the pre-embedded steel sleeve 10 is welded to the circular holes. The nuts of the anchor bolts 11 are located on the side of the stator core 4 away from the positioning steel plate 3. The bolts of the anchor bolts 11 pass through the stator core 4 and the positioning steel plate 3 in sequence and enter the concrete main plate. Part of the bolts are located in the pre-embedded steel sleeve 10.

[0054] Optionally, the embedded steel sleeve 10 has an internal thread on its inner side, and the internal thread of the embedded steel sleeve 10 is connected to the external thread of the screw in the anchor bolt 11.

[0055] In some embodiments of this application, the concrete track slab 1 further includes longitudinal prestressing tendons 6 and transverse prestressing tendons 20. The plurality of longitudinal prestressing tendons 6 and the plurality of transverse prestressing tendons 20 are interwoven to form a mesh structure. The longitudinal prestressing tendons 6 extend along the longitudinal direction of the bridge, and the transverse prestressing tendons 20 extend along the transverse direction of the bridge.

[0056] In this embodiment, the arrangement spacing and number of longitudinal prestressing tendons 6 and transverse prestressing tendons 20 are determined according to the structure, stress and deformation requirements of the concrete track slab 1.

[0057] It is worth mentioning that in the embodiments described above and below, multiple embedded steel sleeves 10 and connecting holes 19 are provided in the concrete main sheet, and the longitudinal prestressing tendons 6 and the transverse prestressing tendons 20 need to avoid the embedded steel sleeves 10 and connecting holes 19.

[0058] In some embodiments of this application, the steel box girder 2 further includes web stiffeners 16, bottom plate stiffeners 17, and crossbeam stiffeners 15. The web stiffeners 16 extend along the bridge direction and are perpendicular to the web 12. The bottom plate stiffeners 17 extend along the bridge direction and are perpendicular to the bottom plate 13. The crossbeam stiffeners 15 are perpendicular to the crossbeam 21 and the bottom plate 13.

[0059] In this embodiment, multiple web stiffening ribs 16 perpendicularly connected to the web plate 12, multiple bottom plate stiffening ribs 17 perpendicularly connected to the bottom plate 13, and multiple crossbeam stiffening ribs 15 perpendicularly connected to the crossbeam 21 are provided inside the steel box girder 2.

[0060] Stiffening ribs are strip-shaped reinforcing members installed at concentrated load locations to ensure the local stability of the component and transfer concentrated forces, thereby improving the stability and torsional resistance of the beam. The spacing and number of stiffening ribs are determined by calculation based on the structure, stress requirements, and deformation limit requirements of the steel box girder 2.

[0061] Optionally, at least one of the web stiffener 16, the base plate stiffener 17, and the beam stiffener 15 has a trapezoidal cross-sectional shape. The trapezoid includes a parallel upper base and a lower base, wherein the length of the upper base is less than the length of the lower base. Specifically, the lower base of the web stiffener 16, the base plate stiffener 17, and the beam stiffener 15 is connected to the corresponding plates in the web 12, the base plate 13, and the beam 21, respectively, while the upper base is away from the corresponding plates. This makes the width of the connection end between the stiffener and the corresponding plate greater than the non-connection end, better adapting to the stress conditions of the stiffener and making the connection between the stiffener and the corresponding plate more stable.

[0062] In the steel box girder 2 structure of this embodiment, stiffening ribs are provided on the top plate, web plate 12 and bottom plate 13, which effectively increases the stiffness of the steel box girder 2, helps to reduce the vertical deformation of the concrete track beam, and makes the train alignment more stable.

[0063] A crossbeam 21 is installed inside the steel box girder 2, which is welded to the top plate, web plate 12 and bottom plate 13 of the steel box girder 2. At the same time, vertical stiffening ribs perpendicular to the crossbeam 21 are provided to increase the lateral stiffness and torsional performance of the steel box girder 2 and reduce the lateral displacement and deflection of the concrete track slab 1 during operation.

[0064] In some embodiments of this application, the steel-concrete connector includes a clustered shear stud 8, and the concrete track slab 1 has a plurality of through-holes 19, through which the clustered shear stud 8 passes and is fixedly connected to the steel box girder 2.

[0065] In this embodiment, connection holes 19 are pre-drilled at the positions of the clustered shear studs 8 on the concrete track slab 1. The number and distribution of the connection holes 19 are determined according to the distribution of the shear studs 8. Various planar shapes of the holes can be selected, such as rectangular, circular, or polygonal. The concrete track slab 1 and the steel box girder 2 are connected by shear studs 8 arranged on the top plate of the box girder, forming an integrated beam-track high-speed maglev track beam.

[0066] In this embodiment, pairs of clustered shear studs 8 are set at certain intervals on the top plate of the steel box girder 2. The bottom end of the shear stud 8 is welded to the top plate of the steel box girder 2, and the top end is inserted into the concrete track slab 1 to reliably connect the track slab to the steel box girder 2, ensuring the safety and stability of the train operation.

[0067] In some embodiments of this application, the clustered shear studs 8 are symmetrically distributed about the central axis of the track beam in the transverse direction, and the clustered shear studs 8 are spaced apart in the longitudinal direction.

[0068] In this embodiment, the shear studs 8 used are clustered shear studs 8, with at least one pair provided at regular intervals along the direction of the bridge on the top plate 18 of the web plate. Other forms of shear keys may also be used if the reliable connection between the concrete track slab 1 and the steel box girder 2 is guaranteed.

[0069] In some embodiments of this application, the steel-concrete connector further includes a cast-in-place concrete structure that encloses the shear stud 8 and fills the connection hole 19.

[0070] In this embodiment, the concrete track slab 1 has pre-reserved connection holes 19 for subsequent concrete pouring. The track slab is laid after the steel box girder 2 is erected, and concrete is poured in the connection holes 19. The cast-in-place concrete structure, together with the shear studs 8, connects the track slab to the steel box girder 2, reducing the amount of on-site construction and ensuring construction accuracy.

[0071] During operation and maintenance, when uneven settlement of the bridge and shrinkage and creep of concrete cause changes in the track slab alignment, such as... Figure 2 The steel box girder is tilted, with one end being too high. The rail elevation can be easily adjusted by adjusting the height of the support at the bottom of the steel box.

[0072] The upper edge of the stiffening rib 15 of the crossbeam is closely fitted with the top plate 14 of the crossbeam, or the upper edge of the stiffening rib 15 of the crossbeam is aligned with the upper edge of the top plate 14 of the crossbeam, and the lower edge of the stiffening rib 15 of the crossbeam is closely fitted with the bottom plate 13, so as to give full play to the stiffening effect.

[0073] Compared with existing technologies, the application of this embodiment can achieve at least the following beneficial effects: This embodiment significantly reduces the self-weight and cross-sectional height of the beam structure by replacing traditional concrete beams with steel box girders; the web top plate and cross beam top plate are only set above the web and cross beams, and under train loads, the top plate is closer to the compression zone of the beam cross-section. Compared with a fully enclosed top plate structure, this avoids local instability of the enclosed top plate under compression and prevents adverse effects on the deformation of the cross beams; this embodiment manufactures the track structure and steel box girder structure separately, and then connects them using connectors, allowing for factory prefabrication, improving work efficiency, reducing operating costs, minimizing the impact of environmental factors, and effectively ensuring the manufacturing accuracy of the structure; the track beam adopts an integrated steel-concrete composite structure, which has the advantages of good integrity and high structural rigidity, making it more suitable for the high-speed operation needs of maglev trains.

[0074] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0076] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0078] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A track beam integrating beam and rail, characterized in that, Includes a concrete track slab, a steel box girder, and steel-concrete connectors linking the concrete track slab and the steel box girder: The steel box girder includes a bottom plate, a web, a crossbeam, a top plate of the web, and a top plate of the crossbeam. The web and the crossbeam are both located on the bottom plate. The bottom plate, the web, and the crossbeam are perpendicular to each other. The top plate of the web and the top plate of the crossbeam are located above the web and the crossbeam, respectively, with a portion of the bottom plate exposed. The steel box girder includes two web top plates and multiple crossbeam top plates. The two web top plates are parallel to each other, and the two ends of each crossbeam top plate are connected to the two web top plates respectively, forming multiple rectangular openings distributed in an array. The steel-concrete connector includes a cluster of shear studs, and the concrete track slab has multiple through-holes. The cluster of shear studs passes through the through-holes and is fixedly connected to the steel box girder. The steel-concrete connector also includes a cast-in-place concrete structure, which encloses the bundled shear studs and fills the connection holes.

2. The integrated beam-rail track beam according to claim 1, characterized in that, The concrete track slab includes a concrete main board, a positioning steel plate, a sliding top plate, and a magnetic guide plate; The sliding top plate is located on the side surface of the concrete main plate away from the steel box girder, the positioning steel plate is located on the side surface of the concrete main plate close to the steel box girder, and the magnetic guide plate is located on both sides of the concrete main plate and connects the sliding top plate and the positioning steel plate.

3. The integrated beam-rail track beam according to claim 2, characterized in that, The concrete track slab also includes a stator core and a long stator coil. The stator core is connected to the positioning steel plate, and the long stator coil is sleeved around the stator core.

4. The integrated beam-rail track beam according to claim 3, characterized in that, The concrete track slab also includes a pre-embedded steel sleeve and anchor bolts. The pre-embedded steel sleeve is embedded in the concrete main plate. The positioning steel plate has a through hole. The orthographic projection of the pre-embedded steel sleeve on the positioning steel plate coincides with the through hole. The anchor bolt passes through the stator core, the through hole of the positioning steel plate, and is bolted to the pre-embedded steel sleeve.

5. The integrated beam-rail track beam according to claim 2, characterized in that, The concrete track slab also includes longitudinal prestressing tendons and transverse prestressing tendons. Multiple longitudinal prestressing tendons and multiple transverse prestressing tendons interweave to form a mesh structure. The longitudinal prestressing tendons extend along the longitudinal direction of the bridge, and the transverse prestressing tendons extend along the transverse direction of the bridge.

6. The integrated beam-rail track beam according to claim 1, characterized in that, The steel box girder also includes web stiffeners, bottom plate stiffeners, and crossbeam stiffeners. The web stiffeners extend along the bridge direction and are perpendicular to the web. The bottom plate stiffeners extend along the bridge direction and are perpendicular to the bottom plate. The crossbeam stiffeners are perpendicular to the crossbeams and the bottom plate.

7. The integrated beam-rail track beam according to claim 1, characterized in that, The clustered shear studs are symmetrically distributed about the central axis of the track beam in the transverse direction of the bridge, and the clustered shear studs are spaced apart in the longitudinal direction of the bridge.

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