Longitudinal sleeper limiting structure for large-span flexible bridge rail transit and using method

Abstract

The invention discloses a long-span flexible bridge rail transit longitudinal sleeper limiting structure and a using method, and relates to the technical field of rail transit. The channel steel side plates are vertically arranged on the steel bottom plate side by side at intervals; the two ends of the channel steel top plate are correspondingly arranged in the U-shaped limiting spaces of the two channel steel side plates respectively. The longitudinal sleeper can be vertically restrained, local tension of the longitudinal sleeper under the live load action of a train is overcome, the problems of track structure disengaging, track deformation, sleeper cracking and the like are solved, and the track service performance is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a longitudinal sleeper limiting structure for long-span flexible bridge rail transit and a method for using the same. Background Art

[0002] With the development of economic construction, in recent years, countries around the world have built long-span ballastless railway bridges, which have the remarkable characteristics of huge engineering scale, complex system, soft structure, large displacement and structural internal force, and very important safety. In particular, large-span flexible bridges will produce large deformation under the action of temperature, wind and train loads, which will cause deformation of the track structure on the bridge, resulting in large track geometry unevenness, affecting the safety of train operation, passenger travel comfort and the durability of machinery and equipment. At present, long-span flexible bridges mainly use longitudinal sleeper shock-absorbing ballast to ensure coordinated deformation of rail and bridge and ensure the stability and reliability of track structure. However, the existing long-span sleeper shock-absorbing ballast mainly provides horizontal rigid alignment and vertical elastic limitation by setting limit bosses on the track plate and using limit grooves on the side walls of the track base. However, this scheme cannot solve the problem that under the action of live load of the train, the longitudinal sleepers are locally vertically pulled, resulting in the track structure being emptied, causing track deformation and sleeper cracking, which in turn affects the service performance of the track. At the same time, after the laying of the longitudinal sleepers and the initial adjustment of the track alignment are completed, the current scheme requires the segmented casting of the side walls of the base, which increases the load significantly and makes it difficult to accurately locate the track alignment during the construction period of long-span flexible bridges.

[0003] Therefore, in order to meet actual needs, a rail transit longitudinal sleeper limiting technology is provided. Summary of the invention

[0004] In view of the defects existing in the prior art, the purpose of this application is to provide a long-span flexible bridge rail transit longitudinal sleeper limit structure and use method, which can realize vertical constraint on the longitudinal sleepers, overcome the local tension of the longitudinal sleepers under the action of train live load, avoid the track structure from being emptied, causing track deformation, sleeper cracking and other problems, and ensure the track service performance.

[0005] In order to achieve the above objectives, the technical solution adopted by this application is:

[0006] In a first aspect, the present application provides a longitudinal sleeper limiting structure for a long-span flexible bridge rail transit, the limiting structure comprising:

[0007] Steel base plate (1);

[0008] The channel steel side plates (2) are arranged side by side and spaced apart on the steel bottom plate (1), and the channel steel side plates (2) include:

[0009] A first main plate (20) of channel steel erected on the steel bottom plate (1);

[0010] A first channel steel side plate (21) vertically arranged on the steel bottom plate (1) and respectively connected to both sides of the first channel steel main plate (20), wherein the two first channel steel side plates (21) are parallel to each other, perpendicular to the first channel steel main plate (20), and both are located on one side of the first channel steel main plate (20) close to the same side end of the steel bottom plate (1);

[0011] The first channel steel main plate (20) and the first channel steel side plate (21) are both rectangular plates, and the top edge of the first channel steel main plate (20) is lower than the top edge of the first channel steel side plate (21), forming a U-shaped limiting space (22);

[0012] The two ends of the channel steel top plate (3) are respectively arranged in the U-shaped limiting space (22) of the two channel steel side plates (2), and the channel steel top plate (3) comprises:

[0013] A second channel steel main plate (30) with two ends respectively horizontally placed on the top edge of the first channel steel main plate (20) in the U-shaped limiting space (22) of the two channel steel side plates (2);

[0014] Two channel steel second side plates (31) are vertically arranged on both sides of the channel steel second main plate (30) in the length direction, the two channel steel second side plates (31) are located in the corresponding U-shaped limiting space (22), and the outer wall of the channel steel second side plate (31) is opposite to the inner wall of the corresponding channel steel first side plate (21);

[0015] The two channel steel second side plates (31) at one end of the channel steel top plate (3) are connected to the corresponding two channel steel first side plates (21).

[0016] On the basis of the above technical solution, the steel bottom plate (1) and the channel steel second main plate (30) are parallel.

[0017] On the basis of the above technical solution, the first channel steel side plate (21) and the second channel steel side plate (31) are parallel to each other and perpendicular to the steel bottom plate (1).

[0018] On the basis of the above technical solution, the first main plate (20) of the channel steel is respectively perpendicular to the steel bottom plate (1), the first side plate (21) of the channel steel, the second main plate (30) of the channel steel and the second side plate (31).

[0019] On the basis of the above technical solution, the two second channel steel side plates (31) at one end of the channel steel top plate (3) are connected to the corresponding two first channel steel side plates (21) via bolts (4).

[0020] On the basis of the above technical solution, the limiting structure further includes:

[0021] Two U-shaped anchor bolts;

[0022] The two U-shaped anchor bolts are respectively located at the bottom of both ends of the steel bottom plate;

[0023] The U-shaped anchor bolt passes through the bottom surface of the steel bottom plate and is fixed to the steel bottom plate on the top surface of the steel bottom plate through at least two fastening nuts.

[0024] On the basis of the above technical solution, the fastening nut corresponding to the U-shaped anchor bolt is located on the steel bottom plate and between the two first side plates of the channel steel of the channel steel side plate.

[0025] On the basis of the above technical solution, a bottom plate through hole is provided in the middle of the steel bottom plate.

[0026] In a second aspect, the present application provides a method for using the long-span flexible bridge rail transit longitudinal sleeper limiting structure mentioned in the first aspect, and the method for using comprises the following steps:

[0027] Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, symmetrically arrange them on the outsides of two longitudinal sleepers arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one;

[0028] The bottom of each of the long-span flexible bridge rail transit longitudinal sleeper limiting structures is fixedly connected to the sleeper base.

[0029] In a third aspect, the present application provides a method for using the long-span flexible bridge rail transit longitudinal sleeper limiting structure mentioned in the first aspect, and the method comprises the following steps:

[0030] Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, symmetrically arrange them on the outsides of two longitudinal sleepers arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one;

[0031] The U-shaped anchor bolts of each of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are embedded in the sleeper base; wherein,

[0032] The two longitudinal sleepers are arranged side by side and at intervals on the top surface of the sleeper base, and the length directions of the two longitudinal sleepers are parallel to the length direction of the sleeper base.

[0033] Compared with the prior art, the advantages of this application are:

[0034] The present application can realize vertical constraint on the longitudinal sleepers, overcome the local tension of the longitudinal sleepers under the live load of the train, avoid the track structure from being emptied, causing track deformation, sleeper cracking and other problems, and ensure the service performance of the track.

[0035] Furthermore, by adopting the limiting structure of the present application, the side walls of the track base can be eliminated, which greatly reduces the load added after the longitudinal sleeper laying and the initial adjustment of the track line shape, and is beneficial to the precise control of the track line shape during the construction period of large-span flexible bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 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.

[0037] Figure 1 This is a schematic diagram of the structure of the longitudinal sleeper limiting structure of the long-span flexible bridge rail transit in an embodiment of the present application;

[0038] Figure 2 It is a schematic diagram of the implementation of the longitudinal sleeper limiting structure of the long-span flexible bridge rail transit in the embodiment of the present application;

[0039] Figure 3 The schematic diagram of the structure of the longitudinal sleeper shock-absorbing ballast mentioned in the background technology.

[0040] In the figure:

[0041] 1. Steel bottom plate; 10. Bottom plate through hole; 2. Channel steel side plate; 20. Channel steel first main plate; 21. Channel steel first side plate; 22. U-shaped limit space; 3. Channel steel top plate; 30. Channel steel second main plate; 31. Channel steel second side plate; 4. Bolt; 5. U-shaped anchor bolt; 50. Fastening nut; A. Longitudinal sleeper; B. Sleeper base; C. Longitudinal sleeper limit structure for long-span flexible bridge rail transit. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, 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 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 making creative work are within the scope of protection of this application.

[0043] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0044] The embodiment of the present application provides a longitudinal sleeper limiting structure and use method for a large-span flexible bridge rail transit, which can achieve vertical constraint on the longitudinal sleepers, overcome local tension on the longitudinal sleepers under the action of live load of the train, avoid track structure decoupling, cause track deformation, sleeper cracking and other problems, and ensure the service performance of the track.

[0045] In order to achieve the above technical effects, the overall idea of ​​this application is as follows:

[0046] A longitudinal sleeper limiting structure for long-span flexible bridge rail transit, the limiting structure comprising:

[0047] Steel base plate 1;

[0048] The channel steel side plates 2 are arranged side by side and at intervals on the steel bottom plate 1, and the channel steel side plates 2 include:

[0049] A first main plate 20 of channel steel erected on the steel bottom plate 1;

[0050] A first channel steel side plate 21 erected on the steel bottom plate 1 and connected to both sides of the first channel steel main plate 20, respectively. The two first channel steel side plates 21 are parallel to each other, perpendicular to the first channel steel main plate 20, and are both located on one side of the first channel steel main plate 20 close to the same side end of the steel bottom plate 1;

[0051] The first channel steel main plate 20 and the first channel steel side plate 21 are both rectangular plates, and the top edge of the first channel steel main plate 20 is lower than the top edge of the first channel steel side plate 21, forming a U-shaped limiting space 22;

[0052] The two ends are respectively arranged in the U-shaped limiting space 22 of the two channel steel side plates 2, and the channel steel top plate 3 includes:

[0053] The second channel steel main plate 30 with two ends horizontally placed on the top edge of the first channel steel main plate 20 in the U-shaped limiting space 22 of the two channel steel side plates 2;

[0054] Two channel steel second side plates 31 are vertically arranged on both sides of the channel steel second main plate 30 in the length direction, and the two channel steel second side plates 31 are located in the corresponding U-shaped limiting space 22, and the outer wall of the channel steel second side plate 31 is opposite to the inner wall of the corresponding channel steel first side plate 21;

[0055] The two second side plates 31 of the channel steel at one end of the channel steel top plate 3 are connected to the corresponding two first side plates 21 of the channel steel through bolts 4; wherein

[0056] The steel bottom plate 1 and the second channel steel main plate 30 are parallel;

[0057] The first channel steel side plate 21 and the second channel steel side plate 31 are parallel to each other and perpendicular to the steel bottom plate 1;

[0058] The first channel steel main plate 20 is respectively perpendicular to the steel bottom plate 1 , the first channel steel side plate 21 , the second channel steel main plate 30 , and the second channel steel side plate 31 .

[0059] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0060] First, see Figures 1 to 3 As shown, the embodiment of the present application provides a longitudinal sleeper limiting structure for a long-span flexible bridge rail transit, and the limiting structure includes:

[0061] Steel base plate 1;

[0062] The channel steel side plates 2 are arranged side by side and spaced apart on the steel bottom plate 1, and the channel steel side plates 2 include:

[0063] A first main plate 20 of channel steel erected on the steel bottom plate 1;

[0064] A first channel steel side plate 21 erected on the steel bottom plate 1 and connected to both sides of the first channel steel main plate 20, respectively. The two first channel steel side plates 21 are parallel to each other, perpendicular to the first channel steel main plate 20, and are both located on one side of the first channel steel main plate 20 close to the same side end of the steel bottom plate 1;

[0065] The first channel steel main plate 20 and the first channel steel side plate 21 are both rectangular plates, and the top edge of the first channel steel main plate 20 is lower than the top edge of the first channel steel side plate 21, forming a U-shaped limiting space 22;

[0066] The two ends are respectively arranged in the U-shaped limiting space 22 of the two channel steel side plates 2, and the channel steel top plate 3 includes:

[0067] The second channel steel main plate 30 with two ends horizontally placed on the top edge of the first channel steel main plate 20 in the U-shaped limiting space 22 of the two channel steel side plates 2;

[0068] Two channel steel second side plates 31 are vertically arranged on both sides of the channel steel second main plate 30 in the length direction, and the two channel steel second side plates 31 are located in the corresponding U-shaped limiting space 22, and the outer wall of the channel steel second side plate 31 is opposite to the inner wall of the corresponding channel steel first side plate 21;

[0069] The two second side plates 31 of the channel steel at one end of the channel steel top plate 3 are connected to the corresponding two first side plates 21 of the channel steel through bolts 4; wherein

[0070] The steel bottom plate 1 and the second channel steel main plate 30 are parallel;

[0071] The first channel steel side plate 21 and the second channel steel side plate 31 are parallel to each other and perpendicular to the steel bottom plate 1;

[0072] The first channel steel main plate 20 is respectively perpendicular to the steel bottom plate 1 , the first channel steel side plate 21 , the second channel steel main plate 30 , and the second channel steel side plate 31 .

[0073] The embodiments of the present application can realize vertical constraint on the longitudinal sleepers, overcome the local tension of the longitudinal sleepers under the live load of the train, avoid the track structure from being emptied, causing track deformation, sleeper cracking and other problems, and ensure the service performance of the track.

[0074] Furthermore, by adopting the limiting structure of the present application, the side walls of the track base can be eliminated, which greatly reduces the load added after the longitudinal sleeper laying and the initial adjustment of the track line shape, and is beneficial to the precise control of the track line shape during the construction period of large-span flexible bridges.

[0075] Furthermore, the limiting structure also includes:

[0076] Two U-shaped anchor bolts 5;

[0077] The two U-shaped anchor bolts 5 are respectively located at the bottom of both ends of the steel bottom plate 1;

[0078] The U-shaped anchor bolt 5 passes through the bottom surface of the steel bottom plate 1 and is fixed to the steel bottom plate 1 on the top surface of the steel bottom plate 1 through at least two fastening nuts 50 .

[0079] Furthermore, the fastening nut 50 corresponding to the U-shaped anchor bolt 5 is located on the steel base plate 1 and between the two channel steel first side plates 21 of the channel steel side plate 2 .

[0080] Furthermore, a bottom plate through hole 10 is provided in the middle of the steel bottom plate 1 .

[0081] When used specifically, as shown in the attached drawings of the specification Figure 2 As shown, the situation is as follows:

[0082] Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, and symmetrically arrange them on the outsides of two longitudinal sleepers A arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one;

[0083] The U-shaped anchor bolts 5 of the longitudinal sleeper limiting structure of each long-span flexible bridge rail transit are embedded in the sleeper base B; wherein,

[0084] The two longitudinal sleepers A are arranged side by side and at intervals on the top surface of the sleeper base B, and the length direction of the two longitudinal sleepers A is parallel to the length direction of the sleeper base B.

[0085] Among them, C is the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit in the embodiment of the present application.

[0086] In summary, the technical solution of the embodiment of the present application provides longitudinal, transverse and vertical constraints for the longitudinal sleepers. This structure can overcome the local tension of the longitudinal sleepers under the live load of the train, avoid the track structure from being emptied, causing track deformation and sleeper cracking, and ensure the service performance of the track;

[0087] At the same time, the use of this structure can eliminate the concrete side walls of the track base, avoid changes in the track line shape caused by pouring the side walls, greatly reduce the load increased after the initial adjustment of the track line shape, and reduce the difficulty of precise control of the track line shape during the construction period of large-span flexible bridges.

[0088] In a second aspect, the present application provides a method for using the long-span flexible bridge rail transit longitudinal sleeper limiting structure mentioned in the first aspect, and the method for using comprises the following steps:

[0089] A1. Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, and symmetrically arrange them on the outside of two longitudinal sleepers A arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one;

[0090] A2. Fix the bottom of each of the long-span flexible bridge rail transit longitudinal sleeper limiting structures to the sleeper base B.

[0091] The embodiments of the present application can realize vertical constraint on the longitudinal sleepers, overcome the local tension of the longitudinal sleepers under the live load of the train, avoid the track structure from being emptied, causing track deformation, sleeper cracking and other problems, and ensure the service performance of the track.

[0092] Furthermore, by adopting the limiting structure of the present application, the side walls of the track base can be eliminated, which greatly reduces the load added after the longitudinal sleeper laying and the initial adjustment of the track line shape, and is beneficial to the precise control of the track line shape during the construction period of large-span flexible bridges.

[0093] It should be noted that the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit fixes the steel base plate 1 on the track base through U-shaped anchor bolts 5 and fastening nuts 50, provides lateral and longitudinal constraints for the sleepers through the channel steel side plates 2, and provides vertical constraints for the sleepers through the channel steel top plates 3.

[0094] It should be noted that the method of using the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit mentioned in the second aspect is similar to the technical principle of the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit mentioned in the first aspect in terms of technical issues, technical means and technical effects, and will not be elaborated here.

[0095] In a third aspect, the present application provides a method for using the long-span flexible bridge rail transit longitudinal sleeper limiting structure mentioned in the first aspect, and the method comprises the following steps:

[0096] B1. Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, and symmetrically arrange them on the outside of two longitudinal sleepers A arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one;

[0097] B2, embedding the U-shaped anchor bolts 5 of the longitudinal sleeper limit structure of each large-span flexible bridge rail transit into the sleeper base B; wherein,

[0098] The two longitudinal sleepers A are arranged side by side and at intervals on the top surface of the sleeper base B, and the length direction of the two longitudinal sleepers A is parallel to the length direction of the sleeper base B.

[0099] The embodiments of the present application can realize vertical constraint on the longitudinal sleepers, overcome the local tension of the longitudinal sleepers under the live load of the train, avoid the track structure from being emptied, causing track deformation, sleeper cracking and other problems, and ensure the service performance of the track.

[0100] Furthermore, by adopting the limiting structure of the present application, the side walls of the track base can be eliminated, which greatly reduces the load added after the longitudinal sleeper laying and the initial adjustment of the track line shape, and is beneficial to the precise control of the track line shape during the construction period of large-span flexible bridges.

[0101] It should be noted that the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit fixes the steel base plate 1 on the track base through U-shaped anchor bolts 5 and fastening nuts 50, provides lateral and longitudinal constraints for the sleepers through the channel steel side plates 2, and provides vertical constraints for the sleepers through the channel steel top plates 3.

[0102] It should be noted that the method of using the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit mentioned in the third aspect is similar to the technical principle of the longitudinal sleeper limiting structure of the large-span flexible bridge rail transit mentioned in the first aspect in terms of technical issues, technical means and technical effects, and will not be elaborated here.

[0103] 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.

[0104] 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.

[0105] 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 longitudinal sleeper limiting structure for long-span flexible bridge rail transit, characterized in that: The limiting structure comprises: Steel base plate (1); The channel steel side plates (2) are arranged side by side and spaced apart on the steel bottom plate (1), and the channel steel side plates (2) include: A first main plate (20) of channel steel erected on the steel bottom plate (1); A first channel steel side plate (21) vertically arranged on the steel bottom plate (1) and respectively connected to both sides of the first channel steel main plate (20), wherein the two first channel steel side plates (21) are parallel to each other, perpendicular to the first channel steel main plate (20), and both are located on one side of the first channel steel main plate (20) close to the same side end of the steel bottom plate (1); The first channel steel main plate (20) and the first channel steel side plate (21) are both rectangular plates, and the top edge of the first channel steel main plate (20) is lower than the top edge of the first channel steel side plate (21), forming a U-shaped limiting space (22); The two ends of the channel steel top plate (3) are respectively arranged in the U-shaped limiting space (22) of the two channel steel side plates (2), and the channel steel top plate (3) comprises: A second channel steel main plate (30) with two ends respectively horizontally placed on the top edge of the first channel steel main plate (20) in the U-shaped limiting space (22) of the two channel steel side plates (2); Two channel steel second side plates (31) are vertically arranged on both sides of the channel steel second main plate (30) in the length direction, the two channel steel second side plates (31) are located in the corresponding U-shaped limiting space (22), and the outer wall of the channel steel second side plate (31) is opposite to the inner wall of the corresponding channel steel first side plate (21); The two channel steel second side plates (31) at one end of the channel steel top plate (3) are connected to the corresponding two channel steel first side plates (21).

2. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1 is characterized in that: The steel bottom plate (1) and the channel steel second main plate (30) are parallel.

3. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1 is characterized in that: The first channel steel side plate (21) and the second channel steel side plate (31) are parallel to each other and perpendicular to the steel bottom plate (1).

4. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1 is characterized in that: The first channel steel main plate (20) is respectively perpendicular to the steel bottom plate (1), the first channel steel side plate (21), the second channel steel main plate (30) and the second channel steel side plate (31).

5. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1, characterized in that: The two second channel steel side plates (31) at one end of the channel steel top plate (3) are connected to the corresponding two first channel steel side plates (21) via bolts (4).

6. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1 is characterized in that: The limiting structure also includes: Two U-shaped anchor bolts (5); The two U-shaped anchor bolts (5) are respectively located at the bottom of both ends of the steel bottom plate (1); The U-shaped anchor bolt (5) passes through the bottom surface of the steel bottom plate (1) and is fixed to the top surface of the steel bottom plate (1) via at least two fastening nuts (50).

7. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 6, characterized in that: The fastening nut (50) corresponding to the U-shaped anchor bolt (5) is located on the steel bottom plate (1) and between the two first channel steel side plates (21) of the channel steel side plate (2).

8. The longitudinal sleeper limiting structure for long-span flexible bridge rail transit according to claim 1, characterized in that: A bottom plate through hole (10) is provided in the middle of the steel bottom plate (1).

9. A method for using a longitudinal sleeper limiting structure for a long-span flexible bridge rail transit according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, and symmetrically arrange them on the outsides of two longitudinal sleepers (A) arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one; The bottom of each of the long-span flexible bridge rail transit longitudinal sleeper limiting structures is fixedly connected to the sleeper base (B).

10. A method for using a longitudinal sleeper limiting structure for a long-span flexible bridge rail transit according to any one of claims 6 to 7, characterized in that: The method of use comprises the following steps: Divide the plurality of the long-span flexible bridge rail transit longitudinal sleeper limiting structures into two groups, and symmetrically arrange them on the outsides of two longitudinal sleepers (A) arranged side by side, and the long-span flexible bridge rail transit longitudinal sleeper limiting structures of the two groups of the long-span flexible bridge rail transit longitudinal sleeper limiting structures are symmetrically arranged one by one; The U-shaped anchor bolts (5) of the longitudinal sleeper limiting structure of each long-span flexible bridge rail transit are embedded in the sleeper base (B); wherein, The two longitudinal sleepers (A) are arranged side by side and at intervals on the top surface of the sleeper base (B), and the length direction of the two longitudinal sleepers (A) is parallel to the length direction of the sleeper base (B).

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