An orbital beam and a suspended monorail beam bridge

Abstract

An embodiment of the present application provides a track beam and a suspended monorail beam bridge. The track beam includes a steel box and transverse spacers. The transverse spacers are disposed in the steel box and connected to two side walls of the steel box to partition a first chamber and a second chamber located at the top of the first chamber in the steel box. An opening is provided on the bottom wall of the first chamber, and the opening extends along the extending direction of the track beam. Inner surfaces of the bottom wall of the first chamber on both sides of the opening form running surfaces. The track beam and the suspended monorail beam bridge according to the embodiments of the present application can improve the comfort and smoothness when a suspended monorail train is running.

Description

Technical Field

[0001] The present application relates to the field of urban rail transit, and particularly to a track beam and a suspended monorail beam bridge. Background Art

[0002] In the related art, there is a track beam of a suspended monorail beam bridge with an open thin-walled box-shaped cross-section. The box-shaped cross-section is surrounded by a top plate, a web plate, and a bottom plate. Among them, the bottom plate includes left and right steel plates, and an opening is formed between the two steel plates. The train bogie is arranged inside the track beam and is connected to the car body of the suspended monorail train through the opening between the left and right steel plates.

[0003] However, since this kind of track beam adopts a thin-walled and bottom-open structural form, the stiffness of this kind of track beam is relatively small. Under the action of train loads, wind loads, etc., the track beam is subjected to a large torque and is prone to deformation, which will have a great adverse impact on the comfort and smoothness of the suspended monorail train during driving. Summary of the Invention

[0004] In view of this, the embodiments of the present application are expected to provide a track beam and a suspended monorail beam bridge that can improve the comfort and smoothness of the suspended monorail train during driving.

[0005] To achieve the above object, an embodiment of the present application provides a track beam for a suspended monorail beam bridge, including:

[0006] A steel box;

[0007] A transverse spacer disposed in the steel box, the transverse spacer being connected to two side walls of the steel box to partition a first chamber and a second chamber located at the top of the first chamber in the steel box. An opening is provided on the bottom wall of the first chamber, and the opening extends along the extending direction of the track beam. Inner surfaces of the bottom wall of the first chamber on both sides of the opening form a running surface.

[0008] In one embodiment, the transverse spacer is a diaphragm or a truss.

[0009] In one embodiment, the steel box includes a first web plate, a second web plate, a first bottom plate, a second bottom plate, and a top plate;

[0010] The first bottom plate and the second bottom plate are spaced apart transversely along the track beam, and an opening is formed at the interval between the first bottom plate and the second bottom plate;

[0011] The bottom side of the first web is connected to the first bottom plate, the top side of the first web is connected to the top plate, the bottom side of the second web is connected to the second bottom plate, the top side of the second web is connected to the top plate. The first web, the second web, the first bottom plate, the second bottom plate and the top plate enclose a cavity, and the transverse spacer is connected to the first web and the second web to divide the cavity into a first chamber and a second chamber.

[0012] In one embodiment, the track beam further includes a plurality of middle partitions. At least a part of each middle partition is disposed in the second chamber, and each middle partition is at least connected to the first web and the second web.

[0013] In one embodiment, the top plate has a plurality of notches.

[0014] Each middle partition respectively includes a main body portion and a convex portion located on the top side of the main body portion;

[0015] The main body portion of each middle partition is located in the second chamber and is welded to the first web, the second web and the transverse spacer;

[0016] The convex portion of each middle partition extends out of the corresponding notch to the outside of the steel box and is welded to the top plate.

[0017] In one embodiment, the track beam further includes a plurality of first reinforcing plates and a plurality of second reinforcing plates. The plurality of first reinforcing plates are disposed on the outer surface of the first web and are spaced apart along the extending direction of the track beam. The plurality of second reinforcing plates are disposed on the outer surface of the second web and are spaced apart along the extending direction of the track beam; and / or,

[0018] The track beam further includes a plurality of third reinforcing plates and a plurality of fourth reinforcing plates. The plurality of third reinforcing plates are disposed on the outer surface of the first bottom plate and are spaced apart along the extending direction of the track beam. The plurality of fourth reinforcing plates are disposed on the outer surface of the second bottom plate and are spaced apart along the extending direction of the track beam; and / or,

[0019] The track beam further includes a first rib plate and a second rib plate. The first rib plate is disposed on the outer surface of the first bottom plate and is spaced apart along the extending direction of the track beam. The second rib plate is disposed on the outer surface of the second bottom plate and is spaced apart along the extending direction of the track beam.

[0020] In one embodiment, the first reinforcing plate is disposed on the outer surface of the first web, and the third reinforcing plate is disposed on the outer surface of the first bottom plate. Each of the first reinforcing plates is respectively connected to the corresponding third reinforcing plate; or, each of the first reinforcing plates and the corresponding third reinforcing plate is an integral structure.

[0021] The second reinforcing plate is disposed on the outer surface of the second web, and the fourth reinforcing plate is disposed on the outer surface of the second bottom plate. Each of the second reinforcing plates is respectively connected to the corresponding fourth reinforcing plate; or, each of the second reinforcing plates and the corresponding fourth reinforcing plate is an integral structure.

[0022] In one embodiment, the track beam further includes a ballast, and the ballast is disposed in the second chamber.

[0023] Another embodiment of the present application provides a suspended monorail beam bridge, including: a plurality of bridge piers and the above-mentioned track beam, and the track beam is disposed on the plurality of bridge piers.

[0024] In one embodiment, the suspended monorail beam bridge includes a plurality of frame structures, and one of the frame structures is respectively disposed between every two adjacent bridge piers;

[0025] The frame structure includes two cross beams and two of the track beams. One of the cross beams is respectively disposed on two adjacent bridge piers, and each end of each cross beam in the transverse direction is respectively connected to one of the track beams.

[0026] In one embodiment, the top wall and the bottom wall of the steel box of each of the track beams respectively protrude toward the side of the steel box close to the bridge pier. The track beam further includes a third web and a plurality of fifth reinforcing plates;

[0027] The third web is disposed on the side of the steel box close to the bridge pier. The bottom side of the third web is connected to the bottom wall of the steel box, and the top side of the third web is connected to the top wall of the steel box. The third web, the side wall of the steel box close to the bridge pier, the bottom wall of the steel box and the top wall of the steel box enclose a third chamber. The plurality of fifth reinforcing plates are disposed in the third chamber and are spaced apart along the extending direction of the suspended monorail beam bridge. Each of the fifth reinforcing plates is at least connected to the third web and the side wall of the steel box close to the bridge pier.

[0028] In one embodiment, the suspended monorail beam bridge is a continuous beam bridge, and the track beam is a variable cross-section continuous beam with a variable top wall height of the steel box; or,

[0029] The suspended monorail girder bridge is a cable-stayed bridge. The cable-stayed bridge includes stay cables and steel anchor boxes. The steel anchor boxes are arranged on the track girder or the steel anchor boxes and the track girder are of an integral structure. The stay cables are anchored on the steel anchor boxes.

[0030] An embodiment of the present application provides a track girder and a suspended monorail girder bridge. By arranging transverse spacers in the steel box of the track girder, a closed shear flow can be formed when the track girder is stressed. Thus, not only can the torsional stiffness of the track girder be greatly improved, but also the lateral deformation of the track girder can be reduced. Furthermore, the comfort and smoothness of the suspended monorail train during driving can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a suspended monorail girder bridge according to an embodiment of the present application;

[0032] Figure 2 is Figure 1 a cross-sectional view of the position where the track girder shown in is provided with a middle partition plate, a first reinforcing plate, a second reinforcing plate, a third reinforcing plate and a fourth reinforcing plate;

[0033] Figure 3 is Figure 1 a cross-sectional view of the position where the track girder shown in is not provided with a middle partition plate, a first reinforcing plate, a second reinforcing plate, a third reinforcing plate and a fourth reinforcing plate;

[0034] Figure 4 is a cross-sectional view of the position where the track girder according to another embodiment of the present application is provided with a middle partition plate, a first reinforcing plate, a second reinforcing plate, a third reinforcing plate and a fourth reinforcing plate;

[0035] Figure 5 is a schematic structural diagram of a suspended monorail girder bridge according to another embodiment of the present application;

[0036] Figure 6 is a schematic structural diagram of a suspended monorail girder bridge according to still another embodiment of the present application.

[0037] DESCRIPTION OF REFERENCE NUMERALS

[0038] Track girder 100; steel box 101; first chamber 101a; second chamber 101b; opening 101c; running surface 101d;

[0039] Third chamber 101e; first web 1011; second web 1012; first bottom plate 1013; second bottom plate 1014;

[0040] Top plate 1015; transverse spacer 102; middle partition plate 103; main body portion 1031; protruding portion 1032; first plus

[0041] Strong plate 104; Second reinforcing plate 105; Third reinforcing plate 106; Fourth reinforcing plate 107; First rib plate 108;

[0042] Second rib plate 109; Third web 110; Fifth reinforcing plate 111; Pier 200; Pier body 201; Capping beam 202;

[0043] Cross beam 300; Lifting lug 400; Pin shaft 500; Bearing 600. Detailed implementation manners

[0044] It should be noted that, without conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other. The detailed description in the specific implementation manners should be understood as an explanatory illustration of the purpose of this application and should not be regarded as an improper limitation to this application.

[0045] In the description of this application, the "top", "bottom", and "lateral" orientation or positional relationship is based on the Figure 1 shown orientation or positional relationship, and the direction perpendicular to the paper surface of the Figure 1 is the extending direction. It should be understood that these orientation terms are only for the convenience of describing this 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 to this application.

[0046] An embodiment of this application provides a track beam 100 for a suspended monorail beam bridge. Please refer to Figures 1 to 3 , the track beam 100 includes a steel box 101 and lateral spacers 102. The lateral spacers 102 are connected to the two side walls of the steel box 101 to separate a first chamber 101a and a second chamber 101b located at the top of the first chamber 101a in the steel box 101. An opening 101c is provided on the bottom wall of the first chamber 101a. The opening 101c extends along the extending direction of the track beam 100. The inner surfaces of the bottom wall of the first chamber 101a on both sides of the opening 101c form a running surface 101d.

[0047] Specifically, the bogie of the suspended monorail train is arranged in the first chamber 101a and is connected to the car body of the suspended monorail train through the opening 101c. The wheels of the bogie can roll directly on the running surface 101d in the first chamber 101a or on the running rails laid on the running surface 101d.

[0048] The width of the first chamber 101a is determined according to the gauge width of the bogie, and the height of the first chamber 101a is determined according to the gauge height of the bogie, as long as it is ensured that the width and height of the first chamber 101a can meet the requirements for the bogie to run.

[0049] Another embodiment of the present application provides a suspended monorail beam bridge. Please refer to Figure 1 , Figure 5 and Figure 6 . The suspended monorail beam bridge includes a plurality of piers 200 and the track beam 100 provided in any embodiment of the present application. The track beam 100 is arranged on the plurality of piers 200.

[0050] By arranging the transverse spacers 102 in the steel box 101, a closed shear flow can be formed when the track beam 100 is stressed. Thus, not only can the torsional stiffness of the track beam 100 be greatly improved, but also the lateral deformation of the track beam 100 can be reduced, and further, the comfort and smoothness of the suspended monorail train during driving can be improved.

[0051] In one embodiment, please refer to Figure 2 and Figure 3 . The transverse spacer 102 can be a diaphragm plate, and the diaphragm plate can be perforated or not perforated.

[0052] In another embodiment, the transverse spacer 102 can also be a truss, and the truss can be a net structure assembled by a plurality of rods.

[0053] In one embodiment, please refer to Figure 2 and Figure 3 . The steel box 101 includes a first web 1011, a second web 1012, a first bottom plate 1013, a second bottom plate 1014, and a top plate 1015. The first bottom plate 1013 and the second bottom plate 1014 are arranged at intervals along the transverse direction of the track beam 100, and an opening 101c is formed at the interval between the first bottom plate 1013 and the second bottom plate 1014. The bottom side of the first web 1011 is connected to the first bottom plate 1013, the top side of the first web 1011 is connected to the top plate 1015, the bottom side of the second web 1012 is connected to the second bottom plate 1014, the top side of the second web 1012 is connected to the top plate 1015. The first web 1011, the second web 1012, the first bottom plate 1013, the second bottom plate 1014, and the top plate 1015 enclose a cavity, and the transverse spacer 102 is connected to the first web 1011 and the second web 1012 to divide the cavity into a first chamber 101a and a second chamber 101b. That is to say, the steel box 101 can be assembled by the first web 1011, the second web 1012, the first bottom plate 1013, the second bottom plate 1014, and the top plate 1015, which is convenient for processing and manufacturing.

[0054] In addition, due to the presence of the lateral spacer 102, the torsional stiffness of the track beam 100 is greatly improved. Therefore, on the premise of ensuring the normal running of the train bogie, the first web 1011 and the second web 1012 with relatively low height can be used to manufacture the steel box 101 to minimize the height of the track beam 100 as much as possible. The first web 1011, the second web 1012 and the top plate 1015 with relatively thin thickness can also be used to manufacture the steel box 101. Thus, not only can the material consumption be saved and the cost be reduced, but also the welding residual stress and deformation can be reduced to ensure the processing quality.

[0055] In one embodiment, please refer to Figure 2 , the track beam 100 further includes a plurality of middle partitions 103. At least part of each middle partition 103 is disposed in the second chamber 101b, and each middle partition 103 is at least connected to the first web 1011 and the second web 1012. That is to say, each middle partition 103 can be only connected to the first web 1011 and the second web 1012, or can be connected to the first web 1011, the second web 1012 and the lateral spacer 102, or can be connected to the first web 1011, the second web 1012, the lateral spacer 102 and the top plate 1015. Thus, the torsional stiffness of the track beam 100 can be further improved.

[0056] In one embodiment, please refer to Figure 2 , the top plate 1015 has a plurality of notches. Each middle partition 103 respectively includes a main body portion 1031 and a protruding portion 1032 located on the top side of the main body portion 1031; the main body portion 1031 of each middle partition 103 is located in the second chamber 101b and is welded to the first web 1011, the second web 1012 and the lateral spacer 102; the protruding portion 1032 of each middle partition 103 extends out of the steel box 101 from the corresponding notch and is welded to the top plate 1015. That is to say, the middle partition 103 is welded to the first web 1011, the second web 1012, the lateral spacer 102 and the top plate 1015 together to form an integral structure.

[0057] Specifically, when manufacturing the track beam 100, the middle partition 103 can be first welded to the first web 1011, the second web 1012 and the lateral spacer 102 as a whole. Then, the top plate 1015 is covered on the top sides of the first web 1011 and the second web 1012 to make the protruding portion 1032 of each middle partition 103 extend out from the corresponding notch. Finally, the protruding portion 1032 is welded to the top plate 1015 from the outside of the steel box 101. Thus, not only the operation is simple and convenient, but also the welding quality can be effectively ensured.

[0058] In one embodiment, please refer to Figure 2, the track beam 100 further includes a plurality of first reinforcing plates 104 and a plurality of second reinforcing plates 105. The plurality of first reinforcing plates 104 are disposed on the outer surface of the first web 1011 and are spaced apart along the extending direction of the track beam 100. The plurality of second reinforcing plates 105 are disposed on the outer surface of the second web 1012 and are spaced apart along the extending direction of the track beam 100. The arrangement of the plurality of first reinforcing plates 104 and the plurality of second reinforcing plates 105 can further improve the torsional stiffness of the track beam 100 and reduce the lateral deformation of the track beam 100.

[0059] In one embodiment, please refer to Figure 2 , the track beam 100 further includes a plurality of third reinforcing plates 106 and a plurality of fourth reinforcing plates 107. The plurality of third reinforcing plates 106 are disposed on the outer surface of the first bottom plate 1013 and are spaced apart along the extending direction of the track beam 100. The plurality of fourth reinforcing plates 107 are disposed on the outer surface of the second bottom plate 1014 and are spaced apart along the extending direction of the track beam 100. Since the first bottom plate 1013 and the second bottom plate 1014 need to bear the weight of the suspended monorail train, therefore, by arranging the plurality of third reinforcing plates 106 and the plurality of fourth reinforcing plates 107, the first bottom plate 1013 and the second bottom plate 1014 can be strengthened to prevent the first bottom plate 1013 and the second bottom plate 1014 from deforming.

[0060] In one embodiment, please refer to Figure 2 , the track beam 100 further includes a first rib plate 108 and a second rib plate 109. The first rib plate 108 is disposed on the outer surface of the first bottom plate 1013 and is spaced apart along the extending direction of the track beam 100. The second rib plate 109 is disposed on the outer surface of the second bottom plate 1014 and is spaced apart along the extending direction of the track beam 100. The first rib plate 108 and the second rib plate 109 can also strengthen the first bottom plate 1013 and the second bottom plate 1014 to prevent the first bottom plate 1013 and the second bottom plate 1014 from deforming.

[0061] Please refer to Figure 2 , when the third reinforcing plate 106 and the first rib plate 108 are simultaneously disposed on the first bottom plate 1013, and the fourth reinforcing plate 107 and the second rib plate 109 are simultaneously disposed on the second bottom plate 1014, the third reinforcing plate 106 can be connected to the first rib plate 108, and the fourth reinforcing plate 107 can be connected to the second rib plate 109. Thus, the anti-deformation ability of the first bottom plate 1013 and the second bottom plate 1014 can be greatly improved.

[0062] In addition, when the first reinforcing plate 104 needs to be disposed on the outer surface of the first web 1011, the third reinforcing plate 106 needs to be disposed on the outer surface of the first bottom plate 1013, the second reinforcing plate 105 needs to be disposed on the outer surface of the second web 1012, and the fourth reinforcing plate 107 needs to be disposed on the outer surface of the second bottom plate 1014, in one embodiment, please refer toFigure 4 Each first reinforcement plate 104 and the corresponding third reinforcement plate 106 can be an integrated structure, and each second reinforcement plate 105 and the corresponding fourth reinforcement plate 107 can also be an integrated structure. This can not only reduce the number of parts but also improve the manufacturing efficiency of the track beam 100.

[0063] In another embodiment, each first reinforcing plate 104 may also be connected to the corresponding third reinforcing plate 106 , and similarly, each second reinforcing plate 105 may also be connected to the corresponding fourth reinforcing plate 107 .

[0064] In one embodiment, the track beam 100 also includes a ballast weight, which is arranged in the second chamber 101b. The ballast weight can be a concrete ballast weight or a metal ballast weight. Setting the ballast weight can prevent some track beams 100 from causing a series of problems due to being too light and / or too soft.

[0065] There are many ways to set the track beam 100 on the bridge pier 200. For example, in one embodiment, refer to Figure 1 The pier 200 includes a pier body 201 and a cap beam 202. The suspended monorail beam bridge also includes a lifting lug 400. The cap beam 202 is arranged at the top of the pier body 201. The lifting lug 400 is arranged on the cap beam 202. The track beam 100 and the lifting lug 400 are connected by a pin shaft 500.

[0066] In one embodiment, please refer to Figure 5 and Figure 6 The suspended monorail beam bridge includes a plurality of frame structures, and a frame structure is respectively arranged between each two adjacent bridge piers 200; the frame structure includes two cross beams 300 and two track beams 100, and a cross beam 300 is respectively arranged on each of the two adjacent bridge piers 200, and each end of each cross beam 300 along the lateral direction is respectively connected to a track beam 100.

[0067] In a specific embodiment, please refer to Figures and Figure 6 The suspended monorail beam bridge may include a plurality of supports 600, and supports 600 are respectively arranged on the cap beam 202 of each pier 200. The number of supports 600 on the cap beam 202 of each pier 200 can be adjusted as needed, and the crossbeam 300 of the frame structure is arranged on the supports 600, that is, the suspended monorail beam bridge can be a simply supported beam bridge.

[0068] In some embodiments, the cross beam 300 of the frame structure may also be fixedly connected to the bridge pier 200, that is, the suspended monorail beam bridge may also be a pier-beam consolidated beam bridge.

[0069] When the part where the top wall of the steel box 101 can be connected to the cross beam 300 is locally heightened, thus, not only can it be ensured that the self-weight of the track beam 100 will not be too large, but also the track beam 100 can be reliably connected to the cross beam 300, so that the force transmission path is clearer and the stress concentration phenomenon can be effectively reduced.

[0070] In one embodiment, please refer to Figure 6 , the top wall and the bottom wall of the steel box 101 of each track beam 100 protrude toward the side of the steel box 101 close to the pier 200 respectively. The track beam 100 further includes a third web 110 and a plurality of fifth reinforcing plates 111; the third web 110 is arranged on the side of the steel box 101 close to the pier 200. The bottom side of the third web 110 is connected to the bottom wall of the steel box 101, the top side of the third web 110 is connected to the top wall of the steel box 101, and the third web 110, the side wall of the steel box 101 close to the pier 200, the bottom wall of the steel box 101 and the top wall of the steel box 101 enclose a third chamber 101e. A plurality of fifth reinforcing plates 111 are arranged in the third chamber 101e and are spaced along the extending direction of the suspended monorail beam bridge. Each fifth reinforcing plate 111 is at least connected to the third web 110 and the side wall of the steel box 101 close to the pier 200. That is to say, a third chamber 101e can be arranged on the side of the first chamber 101a and the second chamber 101b close to the pier 200. The cross beam 300 is connected to the third web 110. The plurality of fifth reinforcing plates 111 can be connected to the third web 110 and the side wall of the steel box 101 close to the pier 200, or can be connected to the third web 110, the side wall of the steel box 101 close to the pier 200 and the bottom wall of the steel box 101, or can also be connected to the third web 110, the side wall of the steel box 101 close to the pier 200, the bottom wall of the steel box 101 and the top wall of the steel box 101. Since the part where the track beam 100 is connected to the cross beam 300 is also the main stress-bearing part, therefore, by arranging the third web 110 and the plurality of fifth reinforcing plates 111, the side where the track beam 100 is connected to the cross beam 300 can be strengthened, so that the torsional stiffness of the track beam 100 can be further improved.

[0071] In some embodiments, the suspended monorail beam bridge can also be a continuous beam bridge or a cable-stayed bridge such as an arch bridge or a cable-stayed bridge with a cable structure.

[0072] When the suspended monorail beam bridge is a continuous beam bridge with a relatively large span, the track beam 100 can be processed into a variable cross-section continuous beam with a variable top wall height of the steel box 101 according to the stress conditions. Thus, not only can it be ensured that the self-weight of the track beam 100 will not be too large, but also the force bearing of the track beam 100 can be more reasonable.

[0073] When the suspended single-track girder bridge is a cable-stayed bridge with cables and steel anchor boxes, the steel anchor box can be an integral structure with the track girder 100, and the cables are anchored on the steel anchor box. That is to say, the track girder 100 can also be used as the steel anchor box for anchoring the cables. Thus, not only can the trouble of separately setting up the steel anchor box be saved, but also the construction cost can be saved.

[0074] In another embodiment, the steel anchor box can also be arranged on the track girder 100.

[0075] The various embodiments / implementations provided in this application can be combined with each other without conflict.

[0076] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application are all included in the protection scope of this application.

Claims

1. A track beam, which is used to be arranged on multiple piers of a suspended monorail beam bridge, is characterized in that, Comprising: A steel box, the top wall and the bottom wall of the steel box protruding towards the side of the steel box close to the pier respectively; A third web, the third web being arranged on the side of the steel box close to the pier, the bottom side of the third web being connected to the bottom wall of the steel box, the top side of the third web being connected to the top wall of the steel box, and the third web, the side wall of the steel box close to the pier, the bottom wall of the steel box and the top wall of the steel box enclosing a third chamber; A plurality of fifth stiffening plates, the plurality of fifth stiffening plates being arranged in the third chamber and spaced along the extending direction of the suspended monorail bridge, and each fifth stiffening plate being connected to at least the third web and the side wall of the steel box close to the pier; A transverse spacer arranged in the steel box, the transverse spacer being connected to the two side walls of the steel box to partition a first chamber and a second chamber located at the top of the first chamber in the steel box, an opening being arranged on the bottom wall of the first chamber, the opening extending along the extending direction of the track beam, and the inner surfaces of the bottom wall of the first chamber on both sides of the opening forming running surfaces.

2. The track beam according to claim 1, characterized in that, The transverse spacer is a diaphragm or a truss.

3. The track beam according to claim 1 or 2, characterized in that, The steel box includes a first web, a second web, a first bottom plate, a second bottom plate and a top plate; The first bottom plate and the second bottom plate are spaced transversely along the track beam, and the opening is formed at the interval between the first bottom plate and the second bottom plate; The bottom side of the first web is connected to the first bottom plate, the top side of the first web is connected to the top plate, the bottom side of the second web is connected to the second bottom plate, the top side of the second web is connected to the top plate, the first web, the second web, the first bottom plate, the second bottom plate and the top plate enclose a cavity, and the transverse spacer is connected to the first web and the second web to partition the cavity into the first chamber and the second chamber.

4. The track beam according to claim 3, characterized in that, The track beam further includes a plurality of middle partitions, at least a part of each middle partition being arranged in the second chamber, and each middle partition being connected to at least the first web and the second web; and / or, 5. The track beam according to claim 4, characterized in that, The top plate has a plurality of notches, and each middle partition respectively includes a main body portion and a protruding portion located on the top side of the main body portion; The main body portion of each middle partition is located in the second chamber and is welded to the first web, the second web and the transverse spacer; The protruding portion of each middle partition extends out of the steel box from the corresponding notch and is welded to the top plate.

6. The track beam according to claim 3, characterized in that, The track beam further includes a plurality of first stiffening plates and a plurality of second stiffening plates, the plurality of first stiffening plates being arranged on the outer surface of the first web and spaced along the extending direction of the track beam, and the plurality of second stiffening plates being arranged on the outer surface of the second web and spaced along the extending direction of the track beam; and / or, The track beam further includes a plurality of third reinforcing plates and a plurality of fourth reinforcing plates. The plurality of third reinforcing plates are disposed on the outer surface of the first bottom plate and are spaced apart along the extending direction of the track beam. The plurality of fourth reinforcing plates are disposed on the outer surface of the second bottom plate and are spaced apart along the extending direction of the track beam; and / or, The track beam further includes a first rib plate and a second rib plate. The first rib plate is disposed on the outer surface of the first bottom plate and is spaced apart along the extending direction of the track beam. The second rib plate is disposed on the outer surface of the second bottom plate and is spaced apart along the extending direction of the track beam.

7. The track beam according to claim 6, characterized in that, The first reinforcing plate is disposed on the outer surface of the first web plate, and the third reinforcing plate is disposed on the outer surface of the first bottom plate. Each first reinforcing plate is respectively connected to the corresponding third reinforcing plate; or, each first reinforcing plate and the corresponding third reinforcing plate are of an integral structure; The second reinforcing plate is disposed on the outer surface of the second web plate, and the fourth reinforcing plate is disposed on the outer surface of the second bottom plate. Each second reinforcing plate is respectively connected to the corresponding fourth reinforcing plate; or, each second reinforcing plate and the corresponding fourth reinforcing plate are of an integral structure.

8. The track beam according to claim 1 or 2, characterized in that, The track beam further includes a ballast, and the ballast is disposed in the second chamber.

9. A suspended single-track girder bridge, characterized in that, Comprising: A plurality of piers and the track beam according to any one of claims 1-5, 8, wherein the track beam is disposed on the plurality of piers.

10. The suspended monorail girder bridge according to claim 9, characterized in that, The suspended monorail beam bridge includes a plurality of frame structures, and one of the frame structures is disposed between every two adjacent piers; The frame structure includes two cross beams and two track beams. One of the cross beams is disposed on each of two adjacent piers, and each end of each cross beam in the transverse direction is respectively connected to one of the track beams.

11. The suspended single-track beam bridge according to claim 9, wherein, The suspended monorail beam bridge is a continuous beam bridge, and the track beam is a variable cross-section continuous beam with a variable height of the top wall of the steel box; or, The suspended monorail beam bridge is a cable-stayed bridge. The cable-stayed bridge includes stay cables and steel anchor boxes. The steel anchor boxes are disposed on the track beam or the steel anchor boxes and the track beam are of an integral structure, and the stay cables are anchored on the steel anchor boxes.

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