Straddle type seamless track beam

Abstract

The invention discloses a straddle type seamless track beam, and relates to the technical field of track traffic bridge engineering, the straddle type seamless track beam comprises a main beam assembly, the main beam assembly comprises a walking track formed by connecting a plurality of corrugated steel web box beams end to end, the corrugated steel web box beams are laid in the bridge direction, and a plurality of pier beam consolidation areas are arranged in the corrugated steel web box beams; stiffening rib units laid in the length direction of the walking track are symmetrically arranged on the two sides of the corrugated steel web box girder; the bridge pier assembly comprises end supporting units arranged at the bottoms of the two ends of the walking track, each end supporting unit comprises a plurality of parallel end triangular piers, each end triangular pier is provided with a vertex angle close to the corrugated steel web box girder and two base angles located below the vertex angle, and the vertex angles are connected with a pier beam consolidation area. And the close bottom angles of the two adjacent end triangular piers are connected into a whole. The corrugated steel web box girder can provide a complete walking bridge floor, and the running stability of the train is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit bridge engineering, and in particular to a straddle-type seamless track beam. Background Art

[0002] In the field of transportation infrastructure construction in my country, straddle-type monorail transportation, as a new form of rail transportation, will gradually become a new trend in the development of urban rail transportation in the future due to its strong adaptability, light structure, and convenient installation. The existing straddle-type monorail transportation lines at home and abroad can be up to nearly 70 kilometers long. The structural form of straddle-type track beams is mainly simple-supported beams and continuous rigid frame bridges. In order to adapt to the deformation and temperature changes of the bridge, expansion joints are provided at both ends of the bridge.

[0003] The span of a simply supported beam is between 20 and 25 meters, and the span of a continuous rigid frame bridge is between 40 and 120 meters. This results in a large number of expansion joints and supports along the entire line. The beam joints will cause the track to be uneven, and the collision between the wheels and the expansion joints of the running surface will shorten the service life of the wheels, greatly reducing the stability and comfort of the train operation. To this end, the following two methods are mainly used to reduce the splicing seams: one is a mixed form of any two or more of a multi-unit continuous beam bridge, a continuous rigid frame bridge or a simply supported beam bridge, connected by wet joints; the other is to use seamless expansion joints, joint plates or plate rubber expansion joints to connect two adjacent rigid frame bridges.

[0004] However, the former uses a combination of new and old concrete to achieve a seamless bridge, and usually pre-treatment of the joint surface is carried out (such as roughening, grooving, etc.). However, in actual construction, the control of the quality of wet joints is often neglected, which becomes a weak link in the structural stress. The latter uses a material different from the main beam for connection, which only makes the bridge surface relatively seamless, but there are still certain gaps inside. The existence of the gap destroys the continuity of the concrete between the segments, which has a great impact on the ultimate bearing capacity and long-term performance of the structure. Summary of the invention

[0005] The present application provides a straddle-type seamless track beam, which can solve the problem in the prior art that the entire bridge is long and has many bridge seams, which will affect the stability and comfort of train operation. In commonly used seamless bridges, hybrid bridges or means such as setting connectors of different materials between main beam sections will affect the technical problems of the ultimate bearing capacity of the structure.

[0006] The embodiment of the present application provides a straddle-type seamless track beam, comprising:

[0007] A main beam assembly, the main beam assembly comprising a running track formed by connecting a plurality of corrugated steel web box beams laid along the bridge direction end to end, a plurality of pier-beam consolidation areas being arranged in the corrugated steel web box beam, and stiffening rib units being symmetrically arranged on both sides of the corrugated steel web box beam along the length direction of the running track;

[0008] A pier assembly, the pier assembly includes end support units arranged at the bottom of both ends of the walking track, the end support units include a plurality of parallel end triangular piers, the end triangular piers have a top angle close to the corrugated steel web box girder and two bottom angles below the top angle, the top angle is connected to the pier-beam consolidation area, and the bottom angles of two adjacent end triangular piers close to each other are connected to form a whole.

[0009] In one embodiment, the end triangular pier includes two inclined supporting piers, and the tops of the two supporting piers converge to form the vertex angle.

[0010] In one embodiment, the pier assembly further includes a middle support unit, which includes a plurality of middle triangular piers spaced apart along the length direction of the walking track, and a supporting vertical pier is provided between two adjacent middle triangular piers.

[0011] In one embodiment, a corrugated steel web box girder includes a steel box top plate, a steel box bottom plate, and two corrugated webs connecting the steel box top plate and the steel box bottom plate, and each of the corrugated webs is provided with a stiffening rib unit.

[0012] In one embodiment, a plurality of steel diaphragms are provided in the corrugated steel web box girder, and the plurality of steel diaphragms are equidistantly arranged along the length direction of the corrugated steel web box girder.

[0013] In one embodiment, the stiffening rib unit includes guide wheel stiffening ribs arranged along the height direction of the corrugated web and stabilizing wheel stiffening ribs located below the guide wheel stiffening ribs.

[0014] In one embodiment, there are two groups of walking tracks, and the two walking tracks are spaced apart along the transverse direction of the bridge. A parallel connection unit is provided between the two walking tracks. The parallel connection unit includes a plurality of connecting trusses, and the two ends of the connecting trusses are respectively connected to the corrugated steel web box girders at opposite positions in the two walking tracks.

[0015] In one embodiment, a first connecting end is provided at the bottom of the corrugated steel web box girder, and second connecting ends matching the first connecting end are provided at both ends of the connecting truss.

[0016] In one embodiment, the connecting trusses are tilted in a horizontal direction, and two adjacent connecting trusses are tilted in opposite directions.

[0017] In one embodiment, a cap beam is provided between two opposite end triangular piers of the two walking tracks, and the cap beam connects the tops of the two end triangular piers.

[0018] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0019] The use of corrugated steel web box girder to form the train running surface can provide a continuous and complete train running track surface, achieving "zero" track gaps on the entire line, thereby improving the smoothness and comfort of train operation. The use of end triangular piers to replace conventional bridge piers can effectively improve the overall longitudinal stiffness and torsional resistance of the seamless track beam, thereby enhancing the mechanical properties of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a straddle-type seamless track beam structure provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a triangular pier structure at the end of a straddle-type seamless track beam provided in an embodiment of the present application;

[0023] Figure 3 A schematic longitudinal section diagram of a corrugated steel web box girder in a straddle-type seamless track beam provided in an embodiment of the present application;

[0024] Figure 4 A top view of a straddle-type seamless track beam provided in an embodiment of the present application;

[0025] Figure 5 A side view of a straddle-type seamless track beam provided in an embodiment of the present application.

[0026] In the figure: 1. box girder with corrugated steel web; 101. steel box top plate; 102. steel box bottom plate; 103. corrugated web; 104. steel cross diaphragm; 105. first connection end; 2. pier-beam consolidation area; 3. stiffening rib unit; 301. guide wheel stiffening rib; 302. stabilizing wheel stiffening rib; 4. end triangular pier; 401. supporting oblique pier; 5. supporting vertical pier; 6. parallel unit; 601. connecting truss; 602. second connection end; 7. cap beam. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] First, some technical terms in this application are explained to facilitate those skilled in the art to understand this application:

[0029] Along the bridge: Along the bridge refers to the central axis of the bridge, that is, the longitudinal direction of the bridge. This direction is one of the main stress directions of the bridge, because vehicle loads, temperature changes, wind loads and other factors may affect the bridge in this direction. In the design and construction of the bridge, it is necessary to fully consider the stress characteristics and deformation along the bridge to ensure the safety and stability of the bridge.

[0030] Transverse direction: refers to the direction perpendicular to the central axis of the bridge, that is, the horizontal direction of the bridge. Although the stress in this direction is not as significant as that in the longitudinal direction, it may also have an important impact on the safety and stability of the bridge in some cases. For example, when natural disasters such as earthquakes and strong winds occur, the stress in the transverse direction of the bridge may become very complicated, and corresponding earthquake and wind resistance measures need to be taken to ensure the safety of the bridge.

[0031] The embodiment of the present application provides a straddle-type seamless track beam, which can solve the technical problems existing in the prior art that the entire bridge is long and has many bridge seams, which will affect the stability and comfort of train operation, while in commonly used seamless bridges, hybrid bridges or means such as setting connectors of different materials between the main beam sections will affect the ultimate bearing capacity of the structure.

[0032] The straddle-type seamless track beam in the present application includes a main beam assembly and a pier assembly located at the bottom of the main beam assembly. The main beam assembly usually bears the main loads from the train and transfers these loads to the pier assembly. The upper surface of the main beam assembly forms the train track, and the entire line is seamlessly arranged to ensure the comfort of the train ride, while the pier assembly is used to support the main beam assembly and improve the overall longitudinal stiffness and torsional resistance of the structure.

[0033] Specifically, Figure 1 A schematic diagram of a straddle-type seamless track beam structure provided in an embodiment of the present application is shown in FIG. Figure 1As shown, the main beam assembly includes a walking track composed of a number of corrugated steel web box beams 1 laid along the bridge and connected end to end, a number of pier-beam consolidation areas 2 are arranged in the corrugated steel web box beam 1, and stiffening rib units 3 laid along the length direction of the walking track are symmetrically arranged on both sides of the corrugated steel web box beam 1.

[0034] Several corrugated steel web box girders 1 are connected end to end and connected to form a whole, which can provide a continuous and complete train running track surface. At the same time, this structural form significantly reduces its own weight, improves its durability and seismic resistance, and also greatly reduces the overall weight of the seamless track beam main beam. At the same time, due to its light weight and clear structural force, the corrugated steel web box girder 1 also has better seismic resistance and improves its service life.

[0035] A plurality of pier-beam consolidation areas 2 are provided in the corrugated steel web box girder 1. The plurality of pier-beam consolidation areas 2 are arranged along the length direction of the corrugated steel web box girder 1. The pier-beam consolidation areas 2 are key parts for connecting the corrugated steel web box girder 1 with the pier assembly. The pier-beam consolidation areas 2 are made of poured concrete to form a steel-concrete composite section in the corrugated steel web box girder 1 and firmly connect the corrugated steel web box girder 1 with the pier assembly, which can effectively improve the mechanical properties of the track beam in the negative bending moment area, thereby improving the overall strength and buckling performance of the seamless track beam.

[0036] The stiffening rib units 3 are symmetrically arranged on both sides of the corrugated steel web box girder 1, which can increase the lateral stiffness of the corrugated steel web box girder 1 and effectively disperse and transfer the load, making the corrugated steel web box girder 1 more uniform and reasonable when subjected to force, thereby improving the overall stability of the structure.

[0037] Furthermore, the pier assembly includes end support units arranged at the bottom of both ends of the walking track to support the starting ends of the walking track, and each end support unit includes a number of parallel end triangular piers 4, the end triangular pier 4 is triangular in shape, having a top angle close to the corrugated steel web box girder 1 and two bottom angles located below the top angle, and the two bottom angles are in a horizontal state, ensuring the overall vertical force of the end triangular pier 4, wherein the top angle of the end triangular pier 4 is embedded in the corrugated steel web box girder 1, and is connected to the corrugated steel web box girder 1 through the pier-beam consolidation area 2, which means that the corrugated steel web box girder 1 located at both ends of the walking track is provided with pier-beam consolidation areas 2 equal to the number of end triangular piers 4, and each pier-beam consolidation area 2 is respectively connected to the top angle of an end triangular pier 4, and at the same time, the bottom angles of two adjacent end triangular piers 4 close to each other are connected to form a whole.

[0038] The triangular support structure has better stability and torque resistance. Several end triangular piers 4 are connected to form a whole, which can improve the structural integrity of the end support unit and help increase the contact area between the pier assembly and the foundation, so that the end support unit can disperse the vertical load from the corrugated steel web box girder 1 through its own transverse span. The top corner of the end triangular pier 4 is embedded in the pier-beam consolidation area 2 of the corrugated steel web box girder 1, ensuring that the load of the main beam assembly can be evenly transferred to the end triangular pier 4, thereby improving the overall stability of the track beam.

[0039] Furthermore, Figure 2 A schematic diagram of the structure of a triangular pier 4 at the end of a straddle-type seamless track beam provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the end triangular pier 4 includes two inclined supporting piers 401, and the tops of the two supporting piers 401 converge to form a vertex angle, and the bottoms of the two supporting piers 401 are connected to the foundation and are aligned with the horizontal plane of the foundation to form an isosceles triangle, and the bottoms of the supporting piers 401 that are close to each other in the two adjacent end triangular piers 4 are formed into a whole. In a possible implementation manner of the present application, the supporting piers 401 are cast by concrete.

[0040] In one usage scenario, see Figure 1 The pier assembly also includes a middle support unit, which includes a plurality of middle triangular piers arranged at intervals along the length direction of the walking track, and a supporting vertical pier 5 is provided between two adjacent middle triangular piers. The walking track is relatively long and may pass through multiple platforms. The load in the platform area will be greater than that in other areas. Therefore, in one embodiment of the present application, two groups of middle triangular piers are provided in the area where the corrugated steel web box girder 1 passes through the platform. The two middle triangular piers are respectively located on both sides of the platform, and supporting vertical piers 5 are equidistantly provided in the other areas for support. The structure of the middle triangular pier refers to the end triangular pier 4, and a pier-beam consolidation area 2 is also provided in the area where the middle triangular pier is provided. No further details will be given here. Of course, based on geological and other factors, middle triangular piers or vertical piers can also be flexibly added at other suitable places. The setting methods of the two are relatively flexible and are not specifically limited in the present application.

[0041] In a possible embodiment, the supporting vertical pier 5 is formed by pouring concrete and has internal stress steel bars, and its top and bottom are respectively connected to the bottom surface of the corrugated steel web box girder 1 and the foundation. The supporting vertical pier 5 can be manufactured by conventional means and will not be described in detail here.

[0042] Furthermore, Figure 3 A longitudinal cross-sectional diagram of a corrugated steel web box girder 1 in a straddle-type seamless track beam provided in an embodiment of the present application, as shown in FIG. Figure 3As shown, the corrugated steel web box girder 1 comprises a steel box top plate 101, a steel box bottom plate 102 and two corrugated webs 103 connecting the steel box top plate 101 and the steel box bottom plate 102, and each corrugated web 103 is provided with a stiffening rib unit 3, the steel box top plate 101 and the steel box bottom plate 102 and the two longitudinally arranged corrugated webs 103 are welded to each other to form a stable box structure, and the corrugated steel web box girder 1 is made of high-strength steel as a whole, and has sufficient rigidity and bearing capacity, wherein the corrugated web 103 is the core component of the corrugated steel web box girder 1, which is longitudinally arranged on the steel box top plate 101 and the steel box bottom plate 102. The plate 101 and the steel box bottom plate 102 play a role of connection and support. The corrugated web 103 adopts a wave-shaped design, which not only increases the rigidity of the corrugated web 103, but also improves the overall torsional resistance of the corrugated steel web box girder 1. Each corrugated web 103 is provided with a stiffening rib unit 3, which can further enhance the bearing capacity of the corrugated web 103. The steel box top plate 101, the steel box bottom plate 102 and the corrugated steel web can all be prefabricated in the factory and welded into one piece in sections after being transported to the site, which can effectively improve the construction efficiency and reduce the construction cost.

[0043] In order to further improve the lateral force performance of the track beam and increase the overall stiffness and torsional resistance of the structure, a plurality of steel diaphragms 104 are provided in the corrugated steel web box girder 1, and the plurality of steel diaphragms 104 are equidistantly arranged along the length direction of the corrugated steel web box girder 1. The steel diaphragms 104 have the same cross-section as the corrugated steel web box girder 1 and are welded to the inner wall of the corrugated steel web box girder 1 to form a whole. In a possible implementation manner, the distance between two adjacent steel diaphragms 104 is 1.5m to 3m.

[0044] Furthermore, the stiffening rib unit 3 not only serves as a stiffening structure of the corrugated steel web box girder 1, but can also be used to provide a guide for the train wheel set. For details, see Figure 3 The stiffening rib unit 3 includes a guide wheel stiffening rib 301 arranged along the height direction of the corrugated web 103 and a stabilizing wheel stiffening rib 302 located below the guide wheel stiffening rib 301. The guide wheel stiffening rib 301 and the stabilizing wheel stiffening rib 302 have the same structure and both extend a certain distance away from the corrugated web 103. At the end of the extension, a longitudinal steel plate is provided to limit the position of the train wheel set. In the assembled working condition, the guide wheel of the train is embedded in the guide wheel stiffening rib 301, and the stabilizing wheel of the train is embedded in the stabilizing wheel stiffening rib 302, so as to provide reliable guidance and stable support for the train wheel set. The straight-line distance between the guide wheel stiffening rib 301 and the stabilizing wheel stiffening rib 302 is determined by the type of bogie of the train, and is not specifically limited here.

[0045] Furthermore, Figure 4 A top view of a straddle-type seamless track beam provided in an embodiment of the present application, such as Figure 4As shown, there are two groups of running tracks, and the two running tracks are spaced apart along the transverse direction of the bridge, and a flat unit 6 is provided between the two running tracks. In a complete seamless track beam, two running tracks are included to respectively carry two trains traveling in opposite directions, forming a double-track bridge, thereby realizing the function of two-way traffic, and the flat unit 6 is used to connect the two running tracks to improve the structural integrity and disperse the lateral moment of the two running tracks, which can effectively reduce the lateral displacement of the seamless track beam as a whole.

[0046] Furthermore, the flat-jointed unit 6 includes a plurality of connecting trusses 601, and the two ends of the connecting trusses 601 are respectively connected to the corrugated steel web box girders 1 that are located opposite to each other in the two running tracks. The number of the corrugated steel web box girders 1 and other structures in the two running tracks are consistent and symmetrically arranged. The connecting truss 601 is a metal beam, and the two ends of the metal beam are respectively connected to the two corrugated steel web box girders 1 through connecting pieces.

[0047] In a possible implementation, the cross section of the connecting truss 601 is H-shaped, and the H-shaped cross section has excellent mechanical properties and load-bearing capacity, and can withstand large loads and deformations. In addition, the H-shaped cross section also has good torsional resistance and can resist torsional deformation caused by external factors.

[0048] For further information, see Figure 3 A first connecting end 105 is provided at the bottom of the corrugated steel web box girder 1, and second connecting ends 602 matching the first connecting end 105 are provided at both ends of the connecting truss 601. In a possible implementation manner of the present application, the first connecting end 105 and the second connecting end 602 are both connecting pin holes. After assembly, the first connecting end 105 and the second connecting end 602 on the same side overlap, and a connecting pin shaft is provided.

[0049] For further information, see Figure 4 The connecting trusses 601 are tilted in the horizontal direction, and the two adjacent connecting trusses 601 are tilted in opposite directions, that is, in a top view, the two adjacent connecting trusses form a V-shaped structure or an inverted V-shaped structure, which can play a role of "self-stabilization" in the bridge structure. When the corrugated steel web box girder 1 is subjected to external loads or wind loads, the adjacent V-shaped structures can support each other and jointly resist deformation and damage.

[0050] Furthermore, Figure 5 A side view of a straddle-type seamless track beam provided in an embodiment of the present application, such as Figure 5As shown, a cap beam 7 is provided between the two end triangular piers 4 at opposite ends of the two walking tracks. The cap beam 7 connects the tops of the two end triangular piers 4. The cap beam 7 is arranged transversely to the bridge, and the two ends of the cap beam 7 do not exceed the outer sides of the two walking tracks. In the assembled working condition, the cap beam 7 is located between the corrugated steel web box girder 1 and the end triangular piers 4, and bears the vertical and horizontal forces from the walking tracks, trains and other loads. The existence of the cap beam 7 enhances the transmission and dispersion of these forces, thereby improving the overall stability and bearing capacity of the bridge. A steel cap beam 7 or a concrete cap beam 7 can be used, and no specific limitation is made here. Of course, in combination with the above description, a cap beam 7 is also provided between the two middle support units at opposite ends of the two walking tracks.

[0051] The seamless track beam in the present application adopts a corrugated steel web box beam 1 to form a train walking surface, which can provide a continuous and complete train walking track surface, achieve "zero" track gaps on the entire line, and improve the stability and comfort of train operation. The end triangular piers 4 are used to replace conventional bridge piers. The longitudinal displacement of the pier top and the bending moment of the pier are significantly reduced compared with conventional bridge piers, and its stiffness is nearly fifty times higher than that of the traditional single vertical pier structure, which improves the adverse effects of train braking force and seismic force on the pier assembly, achieves the purpose of optimizing the foundation force and saving masonry, thereby reducing investment; since end support units are set at both ends of the walking track, the two ends of the seamless track beam are completely consolidated and constrained, and the axial force of the main beam section is only related to the cross-sectional area and the temperature difference. Compared with the prestressed concrete track beam, the corrugated steel web box beam 1 can effectively reduce the cross-sectional area, thereby improving the mechanical properties of the structure.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A straddle-type seamless track beam, characterized in that: include: A main beam assembly, the main beam assembly comprising a running track formed by connecting a plurality of corrugated steel web box beams (1) laid along the bridge direction end to end, a plurality of pier beam consolidation areas (2) being arranged in the corrugated steel web box beam (1), and stiffening rib units (3) being symmetrically arranged on both sides of the corrugated steel web box beam (1) and being laid along the length direction of the running track; A pier assembly, the pier assembly comprising end support units arranged at the bottom of both ends of a walking track, the end support units comprising a plurality of parallel end triangular piers (4), the end triangular piers (4) having a top angle close to the corrugated steel web box girder (1) and two bottom angles located below the top angle, the top angle connecting the pier-beam consolidation area (2), and the bottom angles of two adjacent end triangular piers (4) close to each other are connected to form a whole.

2. The straddle-type seamless track beam according to claim 1, characterized in that: The end triangular pier (4) comprises two inclined supporting piers (401), and the tops of the two supporting piers (401) converge to form the vertex angle.

3. The straddle-type seamless track beam according to claim 1, characterized in that: The pier assembly also includes a middle support unit, which includes a plurality of middle triangular piers spaced apart along the length direction of the walking track, and a supporting vertical pier (5) is provided between two adjacent middle triangular piers.

4. The straddle-type seamless track beam according to claim 1, characterized in that: The corrugated steel web box girder (1) comprises a steel box top plate (101), a steel box bottom plate (102), and two corrugated webs (103) connecting the steel box top plate (101) and the steel box bottom plate (102), and each of the corrugated webs (103) is provided with a stiffening rib unit (3).

5. The straddle-type seamless track beam according to claim 4, characterized in that: A plurality of steel diaphragms (104) are arranged in the corrugated steel web box girder (1), and the plurality of steel diaphragms (104) are arranged at equal distances along the length direction of the corrugated steel web box girder (1).

6. The straddle-type seamless track beam according to claim 4, characterized in that: The stiffening rib unit (3) comprises a guide wheel stiffening rib (301) arranged along the height direction of the corrugated web (103) and a stabilizing wheel stiffening rib (302) located below the guide wheel stiffening rib (301).

7. The straddle-type seamless track beam according to claim 1, characterized in that: There are two groups of walking tracks, and the two walking tracks are spaced apart along the transverse direction of the bridge. A flat connection unit (6) is provided between the two walking tracks. The flat connection unit (6) includes a plurality of connecting trusses (601), and the two ends of the connecting trusses (601) are respectively connected to the corrugated steel web box girders (1) at opposite positions in the two walking tracks.

8. The straddle-type seamless track beam according to claim 7, characterized in that: The bottom of the corrugated steel web box girder (1) is provided with a first connecting end (105), and both ends of the connecting truss (601) are provided with second connecting ends (602) matching the first connecting end (105).

9. The straddle-type seamless track beam according to claim 7, characterized in that: The connecting trusses (501) are arranged obliquely in a horizontal position, and two adjacent connecting trusses (601) are inclined in opposite directions.

10. The straddle-type seamless track beam according to claim 1, characterized in that: A cap beam (7) is provided between two opposite end triangular piers (4) of the two walking tracks, and the cap beam (7) connects the tops of the two end triangular piers (4).

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