Track structure capable of longitudinally extending and supporting

Abstract

The invention relates to a longitudinal extending and supporting track structure which comprises a prefabricated track plate and a track bearing table integrally formed with the prefabricated track plate, or comprises a cast-in-place track bed plate and a sleeper embedded in the surface of the cast-in-place track bed plate. Longitudinal convex bodies are arranged at the positions, corresponding to the steel rails, of the rail bearing tables or the sleepers, and the longitudinal convex bodies are longitudinally arranged between rail bearing points of the steel rails along a line. The force transmission path of the rail bearing structure is reconstructed through the continuous or quasi-continuous bearing face extending longitudinally, the longitudinal relevance of the rail bearing structure is improved, non-bearing gaps between longitudinal adjacent rail bearing points are effectively reduced, loads borne by the steel rails can be more evenly transmitted to the rail bearing structure, the bending moment and deformation of the steel rails are reduced, and the service life of the steel rails is prolonged. The track structure is simple in structure and convenient to use, the occurrence of steel rail corrugation and other diseases is delayed, the service life of the track structure is prolonged, the stability and comfort of train operation are improved, and meanwhile vibration, noise and maintenance cost of the track structure are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation engineering, and in particular to a longitudinally extended supported rail structure. Background Art

[0002] In a ballastless track system, the rail support structure typically consists of a track slab and its surface rail support platform, which secures and precisely positions the rails using fasteners. The rail support platform is typically a cast or prefabricated trapezoidal or rectangular projection on the track slab. Together with the track slab, it supports the rails and ensures geometric stability, forming a force transmission path from the rails to the rail support platform and then to the track slab.

[0003] In the existing widely used track-bearing structures, the track-bearing platforms are mostly designed in a transverse layout, that is, the rails are supported by transverse track-bearing platforms arranged at intervals in the longitudinal direction. The track-bearing platforms are generally transversely continuous structures, or transversely symmetrical quasi-continuous double track-bearing platform structures. Under such a structural form, the track-bearing structure lacks longitudinal continuity in the longitudinal direction of the line. The load borne by the rails is concentrated on the various transversely related track-bearing points. There is a lack of effective connection and cooperative working ability in the longitudinal direction, resulting in large bending moments and deformations on the rails between adjacent longitudinal track-bearing points, which can easily cause fatigue damage and diseases of the rails, such as rail corrugation and sleeper cracking. In addition, due to such longitudinally discrete point support, the integrity and stability of the track structure are poor. Under the action of the dynamic load of the train, relative displacement and loosening are prone to occur. The rails will produce large vertical displacements and vibrations when the train passes. This not only affects the running stability and ride comfort of the train, but also increases the maintenance cost and frequency of the track structure.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of the present invention is to provide a longitudinally extended support track structure to solve the problems of the existing track support structure, such as the rails being subjected to large bending moments and the train running stability being reduced due to the lack of longitudinal continuity.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] Provided is a longitudinally extended support track structure comprising a prefabricated track slab and a rail support platform integrally formed on its surface, or a cast-in-place track bed slab and sleepers embedded in its surface;

[0008] The rail support platform or the sleeper is provided with longitudinal protrusions at positions corresponding to the rails, and the longitudinal protrusions are arranged along the longitudinal direction of the line between the rail support points of the rails.

[0009] Furthermore, the rail support platform is a one-way extending T-shaped rail support platform;

[0010] The one-way extending T-shaped rail support platform includes a rail support platform transverse body and a longitudinal protrusion provided at one longitudinal end thereof, wherein the longitudinal protrusion is a longitudinal extension portion of the rail support platform provided at the longitudinal front end or the longitudinal rear end of the rail support platform transverse body;

[0011] The rail support platform transverse body is provided with fastener mounting bolt holes.

[0012] Furthermore, the one-way extending T-shaped rail support platforms are arranged in two left and right rows longitudinally on the surface of the prefabricated track plate, and the longitudinal extension portions of the two left and right rows of the one-way extending T-shaped rail support platforms are respectively located at the longitudinal front end and the longitudinal rear end of the transverse body of the rail support platform, and protrude in opposite directions;

[0013] The two rows of one-way extending T-shaped rail support platforms are staggered in the front and back direction, and the transverse main body of the one-way extending T-shaped rail support platform on one side corresponds laterally to the longitudinal extension part of the one-way extending T-shaped rail support platform on the other side.

[0014] Alternatively, the rail support platform is a two-way extending rail support platform;

[0015] The bidirectionally extendable rail support platform comprises a rail support platform transverse main body and longitudinal protrusions provided at both longitudinal ends thereof, wherein the longitudinal protrusions are longitudinal extensions of the rail support platform provided at the longitudinal front end and the longitudinal rear end of the rail support platform transverse main body;

[0016] The rail support platform transverse body is provided with fastener mounting bolt holes.

[0017] Furthermore, the two-way extending rail supporting platforms are longitudinally arranged in two left and right rows on the surface of the prefabricated track plate, and are arranged symmetrically on the left and right sides.

[0018] Furthermore, an under-rail elastic pad is provided on the continuous supporting surface of the rail support platform, and a downwardly protruding lateral limiting flange is provided at the bottom edge of the under-rail elastic pad, and the lateral limiting flange surrounds the outer periphery of the rail support platform.

[0019] Alternatively, the sleeper comprises a transversely continuous sleeper body, and fastener mounting bolt holes are provided at positions corresponding to the rails on both sides of the transverse sleeper body;

[0020] The longitudinal convex bodies are provided on both the left and right sides of the longitudinal front and rear ends of the continuous transverse body of the sleeper. The longitudinal convex bodies are longitudinally extending ribs of the sleeper provided at the longitudinal front end and the longitudinal rear end of the continuous transverse body of the sleeper.

[0021] Alternatively, the sleeper comprises a sleeper transverse body and longitudinal protrusions provided at both longitudinal ends thereof, wherein the longitudinal protrusions are longitudinally extending and connecting two longitudinally adjacent sleeper transverse bodies;

[0022] The sleeper transverse body is provided with fastener mounting bolt holes.

[0023] Furthermore, the sleeper transverse bodies are longitudinally arranged in two left and right rows on the surface of the cast-in-place track bed plate, and are arranged symmetrically on the left and right sides.

[0024] Furthermore, the bottom of the sleeper is embedded in the surface of the cast-in-place track bed slab.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a track structure with longitudinally extended supports, which reconstructs the force transmission path of the track-bearing structure through the longitudinally extended continuous or quasi-continuous supporting surface, improves the longitudinal correlation of the track-bearing structure, and effectively reduces the non-support gap between longitudinally adjacent track-bearing points, so that the load borne by the rails can be more evenly transmitted to the track-bearing structure, reduces the bending moment and deformation of the rails, delays the occurrence of diseases such as rail corrugation, extends the service life of the track structure, improves the stability and comfort of train operation, and also reduces the vibration, noise and maintenance cost of the track structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0028] Figure 1 It is a plan view of a prefabricated track plate of a one-way extending T-shaped rail support platform provided by an embodiment of the present invention.

[0029] Figure 2 It is a longitudinal section view of a prefabricated track plate of a one-way extending T-shaped rail support provided by an embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of a prefabricated track plate of a bidirectionally extending rail support platform provided in an embodiment of the present invention.

[0031] Figure 4 It is a longitudinal section view of a prefabricated track slab of a bidirectionally extending rail support platform provided by an embodiment of the present invention.

[0032] Figure 5 Schematic diagram of a sleeper-embedded cast-in-place track bed slab with bidirectional ribs provided in an embodiment of the present invention.

[0033] Figure 6 It is a longitudinal section of a sleeper-embedded cast-in-situ trackbed slab with bidirectional ribs provided in an embodiment of the present invention.

[0034] Figure 7 It is a schematic diagram of the integral support interface formed by the longitudinal connection provided by an embodiment of the present invention.

[0035] Figure 8 Schematic diagram of the elastic pad under the rail provided in an embodiment of the present invention.

[0036] The symbols in the figure are:

[0037] 1- Prefabricated track slab, 2- One-way extended T-shaped rail support platform, 3- Fastener mounting bolt hole, 4- Transverse body of rail support platform, 5- Longitudinal extension of rail support platform, 6- Bidirectional extension rail support platform, 7- Cast-in-place track bed slab, 8- Sleeper, 9- Continuous transverse body of sleeper, 10- Longitudinal extension rib of sleeper, 11- Sleeper truss reinforcement, 12- Longitudinal extension longitudinal connection, 13- Elastic pad under rail, 14- Lateral limit flange, 15- Transverse body of sleeper. DETAILED DESCRIPTION

[0038] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] It should also be noted that although the steps are described in order, in some cases they may be performed in an order different from that shown, and this should not be construed as limiting the order of the steps.

[0042] In the specific implementation, the rail length direction, i.e., the line direction, is defined as the longitudinal direction, and the direction perpendicular thereto is defined as the transverse direction. Figure 1The top in is defined as the front, Figure 1 The bottom in the middle is defined as the back.

[0043] Most of the existing track engineering rail supports or sleepers adopt a transverse extension design concept, lacking longitudinal continuity. The support points of the rails are longitudinally discrete. In track engineering, the rails have poor smoothness, and the rails are subjected to large longitudinal bending moments and deformations, making them prone to defects. To this end, the present invention provides a track structure with longitudinal extension support. In addition to transverse continuity, the longitudinal continuity is comprehensively considered. The rail support part extends longitudinally along the line to form a continuous or quasi-continuous support surface, which completely breaks through the existing design concept. Through structural transformation and optimization, the stress performance of the track structure is improved, the longitudinal continuity of the rail support structure is enhanced, the stability and safety of train operation are improved, and the defects of the rail supports or sleepers that only adopt transverse extension are overcome.

[0044] Specifically, the longitudinally extending support track structure of the present invention can be prefabricated or cast-in-place. In the case of a prefabricated track structure, the track support structure comprises a prefabricated track slab 1 and a track support platform integrally formed therewith. In the case of a cast-in-place track structure, the track support structure comprises a cast-in-place trackbed slab 7 and sleepers 8 embedded therein.

[0045] In the rail-supporting structure of the present invention, the rail-supporting platform or rail sleeper 8 is a transversely continuous structure or a transversely split structure, and adopts a unique longitudinally extended continuous supporting surface design, that is, a longitudinal convex body is provided at the position corresponding to the rail, and the longitudinal convex body is extended in a longitudinal unilateral or longitudinal bilateral manner. In addition, the longitudinal convex body can longitudinally connect the front and rear rail-supporting platforms or rail sleepers 8, or can form a smaller non-supporting gap at a certain distance in the longitudinal direction. In such a structural form, the longitudinal convex bodies are arranged along the longitudinal direction of the line between the rail-supporting points to form a longitudinally continuous or quasi-continuous supporting surface, which reconstructs the force transmission path of the rail-supporting structure, enables the longitudinally adjacent rail-supporting platforms or rail sleepers 8 to work together to jointly bear the train load and reduce the bending moment and deformation of the rail.

[0046] The longitudinally extended support track structure provided by the present invention has the following various implementation schemes using different construction methods and extension methods:

[0047] Example 1: One-way extended T-shaped rail support platform prefabricated plate structure

[0048] In this embodiment, the longitudinally extending support rail structure adopts a prefabricated assembled structure, and the rail support structure includes a prefabricated rail plate 1 and a rail support platform integrally formed with the prefabricated rail plate 1 .

[0049] like Figure 1 and Figure 2The rail support is a one-way extending T-shaped rail support 2, which includes a transverse rail support body 4 and a longitudinal protrusion provided at one longitudinal end thereof. The longitudinal protrusion is a longitudinal extension 5 provided at the longitudinal front end or longitudinal rear end of the transverse rail support body 4. The transverse rail support body 4 is provided with fastener mounting bolt holes 3, which serve as the support point and mounting position for the rail.

[0050] The one-way extending T-shaped rail support platforms 2 are arranged longitudinally in two rows on the surface of the prefabricated track plate 1. The longitudinal extension portions 5 of the two rows of one-way extending T-shaped rail support platforms 2 are respectively located at the longitudinal front end and the longitudinal rear end of the transverse main body 4 of the rail support platform, and the protruding directions are opposite. Figure 1 In the figure, the longitudinal extension portion 5 of the left rail support platform extends rearward, while the longitudinal extension portion 5 of the right rail support platform extends forward, which is opposite to the left and right. The two rows of unidirectionally extending T-shaped rail support platforms 2 are arranged longitudinally front to back, and the rail support platform transverse body 4 of the unidirectionally extending T-shaped rail support platform 2 on one side transversely corresponds to the rail support platform longitudinal extension portion 5 of the unidirectionally extending T-shaped rail support platform 2 on the other side.

[0051] In this embodiment, the rail support platform has both horizontal and vertical correlations. The rail support points on the left and right sides are asymmetrical and staggered front to back, which optimizes track stiffness and force uniformity, reduces local stress concentration, and is more conducive to avoiding the generation of longitudinal bending moments.

[0052] Furthermore, in this embodiment, the unidirectionally extending T-shaped rail supports 2 form a quasi-continuous longitudinal support surface. A non-supporting gap exists between adjacent longitudinal rail supports, and the length of the non-supporting gap is less than the length of the unilateral extension. This transforms the longitudinal discrete point support of the rail into a quasi-continuous support. This structure significantly improves the load-bearing capacity and stability of the track, while reducing vibration and impact.

[0053] Example 2: Bidirectionally extended rail support platform prefabricated plate structure

[0054] In this embodiment, the longitudinally extending support rail structure also adopts a prefabricated assembled structure, and the rail support structure includes a prefabricated rail plate 1 and a rail support platform integrally formed with the surface thereof.

[0055] like Figure 3 and Figure 4 The rail support is a bidirectionally extending rail support 6, which includes a transverse rail support body 4 and longitudinal projections at both ends. The longitudinal projections are longitudinal extensions 5 provided at the longitudinal front and rear ends of the transverse rail support body 4. Fastener mounting bolt holes 3 are provided on the transverse rail support body 4, which serve as the support point and mounting position for the rail.

[0056] Bidirectionally extending rail supports 6 are arranged in two symmetrical rows on the surface of the precast track slab 1, with the rail support points also symmetrical. The rail supports' transverse main bodies 4 and longitudinal extensions 5 are orthogonally arranged, creating both transverse and longitudinal connections.

[0057] In this embodiment, the bidirectionally extending rail supports 6 also form a quasi-continuous longitudinal support surface. Unsupported gaps are provided between adjacent longitudinal rail supports, and the length of these gaps is less than the length of the unilateral extensions. This transforms the rail's previously discrete longitudinal point support into a quasi-continuous support. This structure significantly improves the rail's load-bearing capacity and stability, while reducing vibration and impact. Furthermore, the longitudinal extensions 5 of the rail supports in this embodiment can also be continuous longitudinally, without unsupported gaps, forming a continuous support surface.

[0058] like Figure 8 In Examples 1 and 2, a rail support platform is provided with an under-rail elastic pad 13 on its continuous support surface. The bottom edge of the under-rail elastic pad 13 is provided with a downwardly projecting lateral limiting flange 14. The lateral limiting flange 14 surrounds the outer periphery of the rail support platform, preventing the under-rail elastic pad 13 from shifting or escaping, thereby ensuring the stability and durability of the elastic support. The under-rail elastic pad 13 has an extended contact surface adapted to the longitudinally extending support surface, and its contour projection covers the longitudinal protrusion of the rail support structure.

[0059] Example 3: Transverse continuous sleeper embedded cast-in-place concrete structure

[0060] In this embodiment, the longitudinally extending support track structure adopts a cast-in-place embedded structure, and the track supporting structure includes a cast-in-place track bed plate 7 and sleepers 8 embedded on its surface.

[0061] like Figure 5 The sleeper 8 includes a transversely continuous sleeper continuous transverse body 9, and fastener mounting bolt holes 3 are provided at positions corresponding to the rails on both sides of the sleeper continuous transverse body 9, which are the supporting points and mounting positions of the rails.

[0062] The longitudinal convex bodies are provided on both the left and right sides of the longitudinal front and rear ends of the continuous transverse sleeper body 9. The longitudinal convex bodies are longitudinally extending ribs 10 provided on the longitudinal front and rear ends of the continuous transverse sleeper body 9. The longitudinally extending ribs 10 and the continuous transverse sleeper body 9 together form a force transmission interface.

[0063] In this embodiment, the rail supports are both transversely continuous and longitudinally interconnected. The longitudinally extending ribs 10 of the sleeper form a quasi-continuous support surface. Unsupported gaps are provided between adjacent longitudinal rail supports, with the length of the unsupported gaps being less than the length of the unilateral extensions. This transforms the rail's longitudinal discrete point support into a quasi-continuous support. This structure can significantly improve the track's load-bearing capacity and stability, while reducing vibration and impact. Furthermore, the longitudinally extending ribs 10 of the sleeper in this embodiment can also be longitudinally continuous, without unsupported gaps, forming a continuous support surface.

[0064] Example 4: Longitudinal continuous sleeper embedded cast-in-place concrete structure

[0065] In this embodiment, the longitudinally extending support track structure adopts a cast-in-place embedded structure, and the track supporting structure includes a cast-in-place track bed plate 7 and sleepers 8 embedded on its surface.

[0066] like Figure 7 The sleeper 8 comprises a transverse sleeper body 15 and longitudinal projections at both ends. The longitudinal projections are longitudinally extending longitudinal links 12 that connect two longitudinally adjacent transverse sleeper bodies 15. Fastener mounting bolt holes 3 are provided on the transverse sleeper body 15, serving as rail support points and mounting locations. The transverse sleeper bodies 15 are arranged in two longitudinally symmetrical rows on the surface of the cast-in-place track slab 7.

[0067] In this embodiment, the rail support platform is longitudinally continuous and also has transverse correlation. The longitudinal continuity does not have any non-support gaps, forming a continuous support surface.

[0068] like Figure 6 In Examples 3 and 4, the bottom of the sleeper 8 is embedded in the surface of the cast-in-place trackbed slab 7. Exposed sleeper truss reinforcement bars 11 are reserved on the top of the cast-in-place trackbed slab 7 and embedded in the bottom of the sleeper 8. The sleeper truss reinforcement bars 11 are welded or tied together to form a three-dimensional connection with the steel mesh in the cast-in-place trackbed slab 7, enhancing the integrity and pullout resistance of the sleeper 8 and the cast-in-place trackbed slab 7.

[0069] All embodiments feature a flexible fastener mounting base, configured in one of two ways depending on actual needs:

[0070] (1) With shoulder fastener: The shoulder fastener is integrated with the lateral body and is suitable for scenarios requiring high lateral restraint;

[0071] (2) Flat installation area: The horizontal main body surface forms a flat installation area, which is suitable for the shoulder-free fastener system and improves the versatility and adaptability of the track structure.

[0072] The construction process of Example 1 and Example 2 is as follows:

[0073] (1) Track plate production:

[0074] Factory prefabrication is adopted, and concrete is poured through steel formwork to form the one-way extending T-shaped / two-way extending rail support platform and the track plate as one piece. If fasteners with shoulders are used, the shoulders are integrated with the horizontal body of the one-way extending T-shaped / two-way extending rail support platform. If fasteners without shoulders are used, a flat installation area is formed on the surface of the rail support platform.

[0075] (2) Track plate installation:

[0076] The prefabricated single-direction extension T-shaped / double-direction extension rail support platform track plate is transported to the construction site. It is installed on the pre-laid base using dedicated lifting equipment and fixed with bolts or grouting to ensure the single-direction extension T-shaped / double-direction extension rail support platform track plate is accurately positioned and stable.

[0077] (3) Installation of elastic pad:

[0078] Place the elastic pad on the one-way extended T-shaped / two-way extended continuous support surface, ensuring that its extended contact surface fits tightly against the support surface. Make sure the lateral limit flange covers the edge of the longitudinal extension to prevent the pad from shifting.

[0079] (4) Fastener and rail installation:

[0080] According to the design requirements, the corresponding fastener system and rails are installed on the fastener installation base surface of the rail support platform.

[0081] The construction process of Example 3 and Example 4 is as follows:

[0082] (1) Sleeper production:

[0083] The sleepers described in Example 3 or Example 4 are factory-fabricated, with ribs extending longitudinally along both sides of the track. Truss reinforcement is embedded in the bottom of the sleepers, providing a spatial connection to the trackbed slab reinforcement mesh. Sleeper production should comply with relevant standards and design requirements to ensure quality and performance. If fasteners with shoulder guards are used, the shoulder guards are integrated with the sleeper's rail-bearing area. If fasteners without shoulder guards are used, a flat mounting area is formed on the surface of the sleeper's rail-bearing area.

[0084] (2) On-site construction:

[0085] At the construction site, the trackbed slab reinforcement is tied and formwork is installed. Prefabricated sleepers are placed on the reinforcement mesh according to the designed spacing, and the truss reinforcement is securely connected to the reinforcement mesh within the trackbed slab. Concrete is poured to form a single unit between the sleepers and the trackbed slab.

[0086] (3) Installation of elastic pad:

[0087] After the concrete reaches its designed strength, install the rail spring pad. Place the spring pad on the bidirectionally extended continuous support surface, ensuring its extended contact surface fits snugly against the support surface. Ensure the lateral limit flanges wrap around the edges of the longitudinal extension to prevent the pad from shifting.

[0088] (4) Fastener and rail installation:

[0089] According to the design requirements, the corresponding fastener system and rails are installed on the fastener installation base surface of the rail support platform.

[0090] The longitudinally extended support track structure provided by the present invention is suitable for rail support systems in railway, subway, light rail and other track projects. It can adapt to different types of fastener systems and has high versatility and adaptability. By optimizing the geometry and force transmission path of the track support structure, the continuous support performance and long-term stability of the track structure are improved. It has the following technical advantages:

[0091] (1) Improve the track's mechanical properties:

[0092] The longitudinally extended bearing surface transforms the rail's discrete point supports into quasi-continuous supports, effectively reducing the unsupported gaps between adjacent rail-bearing points. This allows the rail load to be more evenly transferred to the rail-bearing structure, reducing rail bending moments and deformation. This delays the onset of rail corrugation and other defects, extending the service life of the track structure. The unidirectionally extended T-shaped, single-sided prefabricated slab rail-bearing structure achieves balanced track stiffness distribution through the staggered arrangement of the left and right rail support platforms and the staggered installation of fasteners, reducing local stress concentration in the track slab.

[0093] (2) Improve train operation stability:

[0094] The quasi-continuous support method reduces the vertical displacement and vibration of the rails when a train passes through; it improves the smoothness and comfort of train operation, while also reducing the noise and maintenance costs of the track structure.

[0095] (3) Enhance structural integrity:

[0096] The prefabricated integrated structure enhances the integrity and stability of the track structure; the spatial steel bar connection between the sleeper ribs and the trackbed slab greatly improves the pull-out resistance and prevents the sleepers from loosening; the longitudinal extension enables adjacent track-bearing structures to work together to bear the train load.

[0097] (4) Adapt to various fastener systems:

[0098] The fastener installation base surface of the rail support structure can be provided with an integrated shoulder or a flat installation area, which can adapt to different types of fastener systems and improve the versatility and adaptability of the track structure.

[0099] (5) Optimize the use of elastic pads:

[0100] The extended contact surface and lateral limit flange design of the elastic pad under the rail ensure a close fit and effective support between the elastic pad and the rail support structure, effectively preventing the pad from shifting and moving out, and improving the service life and vibration reduction effect of the elastic pad.

[0101] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A longitudinally extending support track structure, characterized in that: The structure comprises a prefabricated track slab (1) and a rail support platform integrally formed on its surface, or comprises a cast-in-place track bed slab (7) and a sleeper (8) embedded in its surface; The rail support platform or the rail sleeper (8) is provided with a longitudinal convex body at a position corresponding to the rail, and the longitudinal convex body is arranged along the longitudinal direction of the line between the rail support points of the rail.

2. A longitudinally extending support track structure according to claim 1, characterized in that: The rail support platform is a one-way extending T-shaped rail support platform (2); The one-way extending T-shaped rail support platform (2) comprises a rail support platform transverse body (4) and a longitudinal convex body provided at one longitudinal end thereof, wherein the longitudinal convex body is a rail support platform longitudinal extension portion (5) provided at the longitudinal front end or the longitudinal rear end of the rail support platform transverse body (4); The rail support platform transverse body (4) is provided with a fastener mounting bolt hole (3).

3. A longitudinally extending support track structure according to claim 2, characterized in that: The one-way extending T-shaped rail support platforms (2) are longitudinally arranged in two left and right rows on the surface of the prefabricated track plate (1), and the rail support platform longitudinal extension portions (5) of the two left and right rows of the one-way extending T-shaped rail support platforms (2) are respectively located at the longitudinal front end and the longitudinal rear end of the rail support platform transverse body (4), and protrude in opposite directions; The two rows of the one-way extending T-shaped rail support platforms (2) are staggered in the front and back directions, and the rail support platform transverse body (4) of the one-way extending T-shaped rail support platform (2) on one side corresponds laterally to the rail support platform longitudinal extension part (5) of the one-way extending T-shaped rail support platform (2) on the other side.

4. The longitudinally extending support track structure according to claim 1, characterized in that: The rail support platform is a two-way extending rail support platform (6); The bidirectionally extending rail support platform (6) comprises a rail support platform transverse body (4) and longitudinal protrusions provided at both longitudinal ends thereof, wherein the longitudinal protrusions are rail support platform longitudinal extension portions (5) provided at the longitudinal front end and the longitudinal rear end of the rail support platform transverse body (4); The rail support platform transverse body (4) is provided with a fastener mounting bolt hole (3).

5. A longitudinally extending support track structure according to claim 4, characterized in that: The bidirectionally extending rail supporting platforms (6) are longitudinally arranged in two left and right rows on the surface of the prefabricated track plate (1), and are arranged symmetrically on the left and right sides.

6. A longitudinally extending support track structure according to claim 3 or 5, characterized in that: A rail-under-elastic pad (13) is provided on the continuous supporting surface of the rail support platform, and a downwardly protruding lateral limiting flange (14) is provided on the bottom edge of the rail-under-elastic pad (13), and the lateral limiting flange (14) surrounds the outer periphery of the rail support platform.

7. The longitudinally extending support track structure according to claim 1, characterized in that: The sleeper (8) comprises a transversely continuous sleeper continuous transverse body (9), and fastener mounting bolt holes (3) are provided at positions corresponding to the rails on both transverse sides of the sleeper continuous transverse body (9); The longitudinal convex bodies are provided on both the left and right sides of the longitudinal front and rear ends of the continuous transverse sleeper body (9), and the longitudinal convex bodies are longitudinally extending ribs (10) of the sleeper provided at the longitudinal front end and the longitudinal rear end of the continuous transverse sleeper body (9).

8. The longitudinally extending support track structure according to claim 1, characterized in that: The sleeper (8) comprises a sleeper transverse body (15) and longitudinal protrusions arranged at both ends thereof, wherein the longitudinal protrusions are longitudinally extending longitudinal links (12) connecting two longitudinally adjacent sleeper transverse bodies (15); The sleeper transverse body (15) is provided with a fastener mounting bolt hole (3).

9. A longitudinally extending support track structure according to claim 8, characterized in that: The sleeper transverse bodies (15) are longitudinally arranged in two left and right rows on the surface of the cast-in-place track bed plate (7), and are arranged symmetrically on the left and right sides.

10. A longitudinally extending support track structure according to claim 7 or 9, characterized in that: The bottom of the sleeper (8) is embedded in the surface of the cast-in-place track bed plate (7).

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