Ballast bed for turnout area and turnout area track structure having the same

Abstract

The present invention provides a track bed for a turnout area and a track structure for a turnout area having the same. The track bed comprises: a ballast layer, the ballast layer has a sleeper support portion, the sleeper support portion comprises a solidification structure; the solidification structure comprises a plurality of first solidification areas and a second solidification area connected to the plurality of first solidification areas, wherein the plurality of first solidification areas are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer. The technical solution of the present invention realizes the reasonable solidification of the track bed in the turnout area.

Description

Technical Field

[0001] The present invention relates to the technical field of railway equipment, and in particular to a roadbed for a turnout area and a turnout area track structure having the same. Background Art

[0002] The traditional ballasted track structure has a series of advantages such as strong maintainability and good elasticity. However, due to the granular characteristics of the ballast that makes up the track bed, there are also a series of problems such as poor ability to maintain the geometric state of the track, easy breakage of ballast particles, and easy deterioration of the track bed. The turnout is the main structure for realizing train switching and is also the weak link of the railway line. The impact formed when the train passes through the switch and connecting parts of the track structure in the switch area can easily cause poor frame size and geometric deformation of the track structure in the switch area, thereby affecting the smoothness of the line and causing the shaking of the train. Compared with the ballasted track on the main line, the complex rail structure in the switch area leads to uneven force on the track bed in the switch area, easy deterioration, and difficult maintenance. If not handled properly, it will cause uneven stiffness of the track bed, local hanging of the switch sleepers and other diseases, which seriously threaten the safe operation of the train.

[0003] Therefore, how to achieve reasonable solidification of the track bed in the turnout area is an urgent problem to be solved in this application. Summary of the invention

[0004] The main purpose of the present invention is to provide a ballast for a turnout area and a turnout area track structure having the same, which can realize reasonable solidification of the ballast in the turnout area.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a roadbed for a turnout area is provided, the roadbed comprising: a ballast layer, the ballast layer having a sleeper supporting portion, the sleeper supporting portion comprising a curing structure; the curing structure comprising a plurality of first curing zones and a second curing zone connected to the plurality of first curing zones, wherein the plurality of first curing zones are arranged at intervals in a horizontal direction perpendicular to an extension direction of the ballast layer.

[0006] Furthermore, the curing structure also includes a plurality of third curing zones, which are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer, and the plurality of third curing zones are all connected to the second curing zone, and the second curing zone is located between the plurality of first curing zones and the plurality of third curing zones.

[0007] Further, a cross section of at least one of the first solidification zone, the second solidification zone and the third solidification zone is trapezoidal or rectangular.

[0008] According to another aspect of the present invention, a switch area track structure is provided, the switch area track structure comprising a plurality of rails and a ballast bed for supporting the plurality of rails, the ballast bed being the above-mentioned ballast bed.

[0009] Furthermore, each rail includes: a switch portion; a connecting portion; and a switch rear portion, wherein the connecting portion is arranged between the switch portion and the switch rear portion, and the switch portion and the switch rear portion are both connected to the connecting portion, wherein a plurality of first solidified areas are arranged correspondingly to a plurality of switch portions of a plurality of rails in the vertical direction, and a second solidified area is arranged correspondingly to each connecting portion in the vertical direction.

[0010] Furthermore, the switch portion includes a first rail segment and a second rail segment having an included angle with the first rail segment, the first rail segment and the second rail segment are both connected to the switch portion, and one or more second solidification areas are supported below each first rail segment and each second rail segment.

[0011] Furthermore, the solidification structure also includes a plurality of third solidification zones, which are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer, and each of the plurality of third solidification zones is connected to a second solidification zone, and a second solidification zone is located between the plurality of first solidification zones and the plurality of third solidification zones; the rear portion of the fork includes a first fork section and a second fork section, the first fork section is connected to the first rail section, the second fork section is connected to the second rail section, and the plurality of third solidification zones are arranged correspondingly to the first fork section and the second fork section in the vertical direction.

[0012] Furthermore, the track structure in the turnout area also includes sleepers, which are arranged on the ballast bed, and the rails are arranged on a side of the sleepers away from the ballast bed.

[0013] Furthermore, the track structure in the turnout area also includes fasteners, and the rails are fixedly connected to the sleepers via the fasteners.

[0014] Furthermore, the turnout area track structure also includes a drainage structure arranged below the track bed.

[0015] Furthermore, the drainage structure is a drainage mat with through holes; or, the drainage structure is a layered structure paved with crushed stones; or, when the track structure in the turnout area is installed to the surface of the roadbed, the drainage structure is bent into a "human" shape.

[0016] By applying the technical solution of the present invention, the ballast used in the turnout area has a solidification structure including multiple first solidification areas and second solidification areas connected to the multiple first solidification areas. When the ballast is applied to two rails in the turnout area, each rail includes a switch portion and a track portion connected to the switch portion. According to the stress condition of the ballast in the turnout area, the multiple first solidification areas and the multiple switch portions are arranged one by one in the vertical direction, and the second solidification area and the multiple track portions are arranged correspondingly in the vertical direction. In this way, the solidification structure can better adapt to the stress distribution of the ballast in the turnout area, play a reasonable supporting role, realize the reasonable solidification of the ballast in the turnout area, and can meet the stress requirements of the ballast in the turnout area during train operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic cross-sectional structure diagram of a steel rail and a solidified structure according to an embodiment of a turnout area track structure of the present invention is shown;

[0019] Figure 2 A cross-sectional view showing the location of the track portion of an embodiment of a turnout track structure according to the present invention; and

[0020] Figure 3 A cross-sectional view showing the location of a switch portion of an embodiment of a switch area track structure according to the present invention.

[0021] The above drawings include the following reference numerals:

[0022] 10. Ballast bed; 11. Sleeper support part; 111. First solidification zone; 112. Second solidification zone; 113. Third solidification zone; 114. Non-solidification structure; 20. Rail; 21. Switching part; 22. Connecting part; 221. First rail section; 222. Second rail section; 23. Fork rear part; 231. First fork section; 232. Second fork section; 30. Sleeper; 40. Fastener; 50. Drainage structure; 60. Roadbed surface. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] The turnout area includes the overlapping section of the straight and lateral rails (the overlapping section refers to the track section 22 of the present application). The inventors have found that when the train passes through the turnout area, before the train enters the overlapping section of the straight and lateral rails and after passing through the overlapping section of the straight and lateral rails, under the action of the actual train load, within the roadbed range, only the roadbed below the rails generates stress, and the stress is distributed in an inverted saddle shape, mainly relying on the roadbed below the rails to bear the force applied downward by the rails, and the roadbed in the middle part of the sleeper is basically unaffected; when the train passes through the overlapping section of the straight and lateral rail sections, the vertical forces generated when the train passes through the section in a single straight direction or laterally are all concentrated in the area directly below the rails, and the roadbed below the sleepers is stressed. In order to provide a roadbed that can adapt to the above-mentioned stress changes, the present invention and the embodiments of the present invention provide a reasonably solidified roadbed.

[0027] like Figures 1 to 3 As shown, an embodiment of the present invention provides a track bed for a turnout area.

[0028] The ballast bed 10 includes a ballast layer, the ballast layer has a sleeper support portion 11, the sleeper support portion 11 includes a solidification structure, the solidification structure includes two first solidification areas 111 and a second solidification area 112 connected to the two first solidification areas 111, wherein the two first solidification areas 111 are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer. The turnout area includes two rails 20, and the ballast bed 10 is used to support the two rails 20. Each rail 20 includes a switch portion 21, a connecting portion 22 and a switch rear portion 23, wherein the connecting portion 22 is arranged between the switch portion 21 and the switch rear portion 23, and the switch portion 21 and the switch rear portion 23 are both connected to the connecting portion 22.

[0029] When the above-mentioned ballast 10 is applied to the rail structure of the turnout area, the two first solidified areas 111 are arranged one-to-one with the two switch parts 21 in the vertical direction, and the second solidified area 112 is arranged correspondingly with the two track parts 22 in the vertical direction. According to the stress condition of the ballast in the turnout area, when the train passes through the switch part 21, only the ballast under the rail generates stress thereon, and the ballast in the middle part of the sleeper is basically unaffected. When the train passes through the track part 22, the ballast under the sleeper is subjected to stress. Therefore, the solidified structure formed by the two first solidified areas 111 and the second solidified area 112 can adapt to the impact force generated when the train passes through the rails in the turnout area and the stress change of the ballast in the turnout area, and the solidified structure of the ballast is reasonable.

[0030] According to the above situation, it can be known that before the train enters the overlapping section of the straight and lateral rails (that is, when the train passes the switch section 21), the ballast bed in the middle part of the sleeper is basically not affected. Therefore, in the embodiment of the present invention, the arrangement of the two first solidification areas 111 is as follows: arranged at intervals in the horizontal direction perpendicular to the extension direction of the ballast layer; the two first solidification areas 111 can play a reasonable supporting role, and the ballast between the two first solidification areas 111 does not need to be solidified. This arrangement does not affect the supporting role of the ballast bed for the sleeper. At the same time, the amount of curing agent used is reduced, thereby reducing the manufacturing cost of the ballast bed, and rainwater can flow out from the uncured ballast gaps between the two first solidification areas 111, avoiding the occurrence of damage to the first solidification area 111 due to rainwater accumulation in the ballast layer. The two first solidification areas 111 are reasonably arranged, can meet the stress requirements, help reduce costs, have good economic benefits, are not easily eroded by rainwater, and can increase the service life of the first solidification area 111.

[0031] Through the above analysis, it can be seen that the roadbed in the embodiment of the present invention realizes the reasonable solidification of the roadbed in the turnout area. While ensuring that the stress requirements can be met, the solidification area of ​​the roadbed in the turnout area is reduced, which helps to reduce costs and has good economic benefits.

[0032] Of course, in an alternative embodiment not shown in the accompanying drawings of the present invention, the curing structure can also include more than three first curing areas 111 and second curing areas 112 connected to the more than three first curing areas 111 according to actual needs, wherein the more than three first curing areas 111 are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer.

[0033] like Figure 1 As shown, in an embodiment of the present invention, the curing structure also includes four third curing areas 113, and the four third curing areas 113 are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer. The four third curing areas 113 are all connected to the second curing area 112, and the second curing area 112 is located between the two first curing areas 111 and the four third curing areas 113.

[0034] In the above arrangement, the solidification structure includes two first solidification areas 111, a second solidification area 112 and four third solidification areas 113 connected in sequence. The two first solidification areas 111, the second solidification area 112 and the four third solidification areas 113 form a unique solidification structure for the roadbed in the turnout area. When the roadbed 10 is applied to the rail structure in the turnout area, the four third solidification areas 113 and the rear parts 23 of the two rails 20 are arranged one by one in the vertical direction. According to the stress condition of the roadbed in the turnout area, when the train passes through the rear part 23 of the turnout (that is, after the train passes through the overlapping section of the straight and lateral rails), only the roadbed under the rail generates stress, and the roadbed in the middle part of the sleeper is basically unaffected. Therefore, the third solidification area 113 of the solidification structure can adapt to the impact force generated when the train passes through the rear part 23 of the turnout rail and the stress change of the roadbed in the turnout area, and the solidification structure of the roadbed is reasonable. In addition, the four third solidification areas 113 are spaced apart in a horizontal direction perpendicular to the extension direction of the ballast layer, which can provide reasonable support for the sleepers. The ballast between the four third solidification areas 113 does not need to be solidified. This arrangement does not affect the supporting effect of the roadbed on the sleepers, and can also reduce the use of curing agent and the manufacturing cost of the roadbed. At the same time, rainwater can flow out from the uncured ballast gaps between the four third solidification areas 113, which can avoid the damage of the third solidification areas 113 due to the accumulation of rainwater in the ballast layer.

[0035] Of course, in an alternative embodiment not shown in the accompanying drawings of the present invention, the curing structure can also include more than five third curing areas 113 according to actual needs, and the more than five third curing areas 113 are arranged at intervals in the horizontal direction perpendicular to the extension direction of the ballast layer, and the more than five third curing areas 113 are all connected to the second curing area 112, and the second curing area 112 is located between the more than two first curing areas 111 and the more than five third curing areas 113.

[0036] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the cross-sections of the first solidification area 111 , the second solidification area 112 and the third solidification area 113 are all trapezoidal.

[0037] It should be noted that the above cross-section refers to the cross-section of the first solidification zone 111, the second solidification zone 112 and the third solidification zone 113 in the vertical direction perpendicular to the extension direction of the ballast layer; the first solidification zone 111, the second solidification zone 112 and the third solidification zone 113 with a trapezoidal structure have higher stability and can withstand greater loads.

[0038] Of course, in alternative embodiments not shown in the accompanying drawings of the present invention, the cross-sections of two of the first solidification zone 111, the second solidification zone 112 and the third solidification zone 113 can be set to a trapezoidal shape according to actual needs; or, the cross-section of at least one of the first solidification zone 111, the second solidification zone 112 and the third solidification zone 113 can be set to a rectangular shape or other shapes that can support the stress of the turnout area roadbed.

[0039] Preferably, the cured structure is formed by bonding and curing the ballast with a curing agent.

[0040] Preferably, the curing agent may be polyurethane, and the polyurethane may be a polyurethane commonly used in preparing polyurethane cured roadbed using relevant technology.

[0041] Preferably, at least one of the first curing zone 111, the second curing zone 112 and the third curing zone 113 is a polyurethane curing structure. In the technology known to the inventor, no one has applied the ballast bed structure cured by polyurethane to the ballast bed in the turnout area. The inventor of the present application first applied the polyurethane curing ballast bed technology to the ballast bed in the turnout area, thereby rationally curing the ballast bed and providing a turnout area track structure that meets the stress requirements of the turnout area. The polyurethane curing ballast bed has the good elasticity and maintainability of the gravel ballast bed, and also has the characteristics of good overall ballast bed stability, long service life, and less ballast bed maintenance operations. The application of the polyurethane curing ballast bed technology to the ballasted track structure in the turnout area can also serve a series of purposes such as slowing down the maintenance of the ballast bed, improving the quality of train operation, and delaying the deterioration of the turnout.

[0042] like Figures 1 to 3 As shown, the present invention and the embodiments of the present invention further provide a track structure in a switch area, the track structure in the switch area includes two rails 20 and a track bed 10 for supporting the two rails 20, and the track bed 10 is the track bed mentioned above.

[0043] The ballast bed 10 is disposed below the two rails 20, and the ballast bed 10 supports the two rails 20; since the track structure of the switch area includes the above-mentioned ballast bed, the track structure of the switch area also has the above-mentioned advantages of the above-mentioned ballast bed, which will not be repeated here.

[0044] Of course, in alternative embodiments of the present invention not shown in the accompanying drawings, the track structure of the turnout area can also include more than three rails 20 and a ballast 10 for supporting the more than three rails 20 according to actual needs, and the ballast 10 is the above-mentioned ballast.

[0045] like Figure 1 and Figure 3As shown, in an embodiment of the present invention, the track structure in the switch area includes two steel rails 20, each steel rail 20 includes a switch portion 21, a connecting portion 22 and a switch rear portion 23, wherein the connecting portion 22 is arranged between the switch portion 21 and the switch rear portion 23, and the switch portion 21 and the switch rear portion 23 are both connected to the connecting portion 22, wherein the two first solidified areas 111 are arranged correspondingly to the two switch portions 21 of the two steel rails 20 in the vertical direction, and the second solidified areas 112 are arranged correspondingly to the two connecting portions 22 of the two steel rails 20 in the vertical direction.

[0046] In the above arrangement, the two first solidified areas 111 are arranged one by one below the two switch portions 21 in the vertical direction, and each first solidified area 111 is used to support each switch portion 21. The second solidified area 112 is arranged correspondingly below the two connecting portions 22 in the vertical direction, and is used to support the two connecting portions 22. It can better adapt to the stress distribution below the two connecting portions 22, play a reasonable supporting role, and meet the stress requirements.

[0047] Of course, in an alternative embodiment not shown in the accompanying drawings of the present invention, three or more rails 20 can be provided according to actual needs, wherein three or more first solidification zones 111 are provided correspondingly to three or more switch portions 21 in the vertical direction, and the second solidification zone 112 is provided correspondingly to the switch portion 22 of each rail 20 in the vertical direction.

[0048] like Figure 1 As shown, in an embodiment of the present invention, the switching portion 22 includes a first rail segment 221 and a second rail segment 222 having an included angle with the first rail segment 221, the first rail segment 221 and the second rail segment 222 are both connected to the switching portion 21, and a second solidification area 112 is supported below the two first rail segments 221 and the two second rail segments 222.

[0049] In the above arrangement, the first rail segment 221 and the second rail segment 222 form a straight and lateral rail overlapping section in the turnout area. It can be seen from the above content that when the train passes through the straight and lateral rail overlapping section, the roadbed under the sleeper is subjected to force; a second solidification zone 112 is arranged below the two first rail segments 221 and the two second rail segments 222, and the cross section of the second solidification zone 112 is located below the cross section of the two first rail segments 221 and the two second rail segments 222 in the vertical direction perpendicular to the extension direction of the ballast layer (such as Figure 2 As shown), the second solidified area 112 is supported as a whole under the two first rail sections 221 and the two second rail sections 222. The second solidified area 112 is evenly stressed and has high structural stability. It can withstand a larger load and enable the track structure in the switch area to meet the impact resistance requirements of the track structure when the train passes through the switch area, which is conducive to better protecting the track structure in the switch area.

[0050] Of course, in an alternative embodiment of the present invention not shown in the drawings, the plurality of second curing areas 112 may be supported below each first rail segment 221 and each second rail segment 222 according to actual needs.

[0051] like Figure 1 As shown, in the embodiment of the present invention, the fork rear portion 23 includes a first fork section 231 and a second fork section 232, the first fork section 231 is connected to the first rail section 221, the second fork section 232 is connected to the second rail section 222, and the four third solidification areas 113 are arranged one by one with the two first fork sections 231 and the two second fork sections 232 in the vertical direction.

[0052] In the above technical scheme, each rail 20 in the turnout area includes a switch portion 21, a first rail section 221 and a first fork section 231 connected thereto, a second rail section 222 and a second fork section 232 connected thereto, and an end of the first rail section 221 away from the first fork section 231 is connected to the switch portion 21, and an end of the second rail section 222 away from the second fork section 232 is also connected to the switch portion 21; the four third curing areas 113 are arranged one by one with the two first fork sections 231 and the two second fork sections 232 in the vertical direction, which can better adapt to the stress distribution under the first fork section 231 and the second fork section 232, play a reasonable supporting role, and while meeting the stress requirements, can reduce the use of curing agent, reduce manufacturing costs, have good economic benefits, and are not easily eroded by rainwater, which helps to increase the service life of the third curing area 113.

[0053] Specifically, Figures 1 to 3 As shown, in the embodiment of the present invention, the two switch portions 21 are arranged in a one-to-one correspondence with the two first solidification areas 111 in the vertical direction, and the two first track sections 221 and the two second track sections 222 are arranged in a one-to-one correspondence with one second solidification area 112 in the vertical direction. It should be noted that in the embodiment of the present invention, the solidification structure includes four third solidification areas 113, and the two first branch sections 231 and the two second branch sections 232 are arranged in a one-to-one correspondence with the four third solidification areas 113 in the vertical direction. Preferably, two adjacent third solidification areas 113 can be set as a split structure or an integrated structure. In the embodiment of the present invention, in order to facilitate construction, the two adjacent third solidification areas 113 located in the middle position are set as an integrated structure (such as Figure 1 As shown), in this way, the adjacent second fork sections 232 and first fork sections 231 of the two rails 20 are arranged correspondingly to the two integrally formed third solidification areas 113, and the first fork sections 231 and second fork sections 232 of the two rails 20 far away from the middle position are arranged one by one correspondingly to the two third solidification areas 113 located on both sides, which can realize the reasonable solidification of the turnout area roadbed, so that each solidification area can better adapt to the stress distribution of the turnout area roadbed and play a reasonable supporting role.

[0054] Of course, in an alternative embodiment of the present invention not shown in the drawings, more third solidification areas 113 may be provided according to actual needs, such as five, where more than five third solidification areas 113 are provided corresponding to the first branch section 231 and the second branch section 232 .

[0055] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the track structure in the turnout area further includes a sleeper 30 , the sleeper 30 is arranged on the ballast bed 10 , and the rail 20 is arranged on a side of the sleeper 30 away from the ballast bed 10 .

[0056] In the above arrangement, the track structure in the turnout area includes rails 20, sleepers 30 and a ballast bed 10 arranged in sequence from top to bottom. The rails 20 are connected to the ballast bed 10 via the sleepers 30. The ballast bed 10 supports the sleepers 30, and the sleepers 30 support the rails 20, thereby achieving the supporting effect of the ballast bed 10 on the rails 20.

[0057] Preferably, the sleeper 30 can be connected to the ballast 10 through a curing agent; specifically, the track structure in the turnout area includes a curing agent bonding layer arranged between the curing structure and the sleeper 30, and the curing agent bonding layer is used to bond the curing structure and the sleeper 30 into an integral structure; through the above arrangement, the overall stability of the structure and performance of the track structure in the turnout area can be improved; the curing agent bonding layer can be formed when the curing agent is poured into the ballast 10 of the track structure in the turnout area to form a curing structure, so that the curing structure and the sleeper 30 are connected as a whole to form a firm composite structure, and the composite structure formed in this way has a certain elasticity, which improves the integrity of the ballast 10, thereby improving the stability and comfort of the track structure in the turnout area. However, the connection between the sleeper 30 and the ballast 10 is not limited to this method, and those skilled in the art can select a suitable connection method according to actual conditions.

[0058] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the track structure in the switch area further includes a fastener 40 , and the rail 20 is fixedly connected to the sleeper 30 via the fastener 40 .

[0059] In the above arrangement, the fastener 40 is used to fix the rail 20 on the sleeper 30 .

[0060] Preferably, a fastener connector may be provided on one side of the sleeper 30 connected to the rail 20, and the fastener connector is used to cooperate with the fastener 40 to fix the rail 20 on the sleeper 30. Preferably, the fastener connector may be an interface provided on the surface of the sleeper 30, and the interface is used to fix the fastener 40, thereby fixing the rail 20 through the fastener 40.

[0061] Preferably, if Figure 2 and Figure 3As shown, in the embodiment of the present invention, the sleeper support part 11 further includes a non-curing structure 114, which is connected to both the curing structure and the sleeper 30. The non-curing structure 114 is formed by the ballast in the sleeper support part 11 that does not need to be cured.

[0062] like Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the switch area track structure further includes a drainage structure 50 arranged below the ballast 10 .

[0063] In the above arrangement, the drainage structure 50 is used to drain water, especially rainwater, flowing out of the roadbed 10, thereby preventing the water flowing out of the roadbed 10 from accumulating under the roadbed 10 and causing damage to the roadbed 10, making the roadbed 10 less susceptible to water erosion.

[0064] Preferably, the drainage structure 50 may be a drainage mat with through holes or a layered structure paved with crushed stones. Of course, in other alternative embodiments, the drainage structure 50 may also be other structures that can play a role in drainage.

[0065] Specifically, Figure 2 and Figure 3 As shown, in the embodiment of the present invention, the turnout area track structure is arranged on the roadbed surface layer 60, and the height of the roadbed surface layer 60 gradually decreases from the center to the sides in the vertical direction, so that the roadbed surface layer 60 has a slope (also called a "herringbone" shape), which is conducive to draining the water under the roadbed 10, and the slope ranges from 1 to 10%. Preferably, the slope is 4%, and in the embodiment of the present invention, a 4% herringbone cape combined with a drainage mat is used for drainage.

[0066] It should be noted that in the vertical direction perpendicular to the extension direction of the ballast layer, the center of the switch area track structure coincides with the center of the roadbed surface 60; in this way, when the drainage structure 50 is laid on the roadbed surface 60, the drainage structure 50 naturally forms a "human" shape due to the slope of the roadbed surface 60, that is, when the switch area track structure is installed to the roadbed surface 60, the drainage structure 50 is bent into a "human" shape.

[0067] It should be noted that the roadbed of the roadbed surface layer 60 may be a railway roadbed, a tunnel roadbed, a bridge roadbed, or a roadbed in other application locations.

[0068] Next, combine Figures 1 to 3 The preparation process of the turnout track structure of the present invention is described in detail:

[0069] Step S10: laying the drainage structure 50 on the roadbed surface layer 60 and completing the construction preparation work of the track structure in the ballasted turnout area;

[0070] Step S20: completing the construction of the ballasted track structure in the turnout area and the laying of the turnout in accordance with the technical regulations for high-speed railway construction;

[0071] Step S30: performing on-site pouring construction on the ballast 10 in the track structure of the turnout area;

[0072] Wherein, step S30 includes the following steps:

[0073] Step S31: First, the track bed 10 of the turnout area track structure is poured along the rail 20 to form a continuous trapezoidal cross-section solidified structure (such as Figure 2 As shown, the two first curing areas 111 corresponding to the switch portion 21 are cured using a double trapezoidal cross-section structure);

[0074] Step S32: After that, the ballast bed 10 of the overlapping section of the straight and lateral rails (i.e., the track section 22) in the turnout area track structure is poured at the center between the adjacent rails 20, so that the ballast bed 10 in the overlapping section of the straight and lateral rails forms a full-section solidified structure (such as Figure 3 As shown, a second curing zone 112 corresponding to the connecting track portion 22 is cured using a full-section structure).

[0075] The embodiments of the present invention reasonably design the solidification structure of the turnout area roadbed and the distribution area of ​​each solidification zone according to the stress condition of the turnout area roadbed. Through the above-mentioned preparation process, a solidification structure that can better adapt to the stress distribution condition of the turnout area roadbed is provided, and reasonable solidification of the turnout area roadbed is achieved to meet the stress requirements, and the deterioration of the ballasted track structure in the turnout area can be delayed. The solidification structure combining the double trapezoidal section and the full section is adopted, which has high technical and economic benefits.

[0076] like Figure 1 As shown, in the embodiment of the present invention, taking a certain turnout as an example, double trapezoidal section curing is adopted within the range of 10m from the turnout starting point, and full section curing is adopted within the range of 10m to 37.8m. The combination of double trapezoidal section and full section structure improves the technical and economic efficiency, and realizes the reasonable curing of polyurethane cured roadbed in the turnout area.

[0077] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the solidification structure includes two first solidification areas, one second solidification area and four third solidification areas, and a unique solidification structure of the ballast bed for the turnout area is formed by the above-mentioned two first solidification areas, the second solidification area and the four third solidification areas. When the above-mentioned ballast bed is applied to the rail structure of the turnout area, the two first solidification areas are arranged one-to-one with the two switch parts in the vertical direction, the one second solidification area is arranged correspondingly with the two connecting parts in the vertical direction, and the four third solidification areas are arranged correspondingly with the rear parts of the two rails in the vertical direction. According to the stress condition of the ballast bed in the turnout area, when the train passes through the switch part and the rear part of the switch, only the ballast bed under the rail generates stress on it, and the ballast bed mainly relies on the force applied downward by the rail. The ballast bed foundation in the middle part of the sleeper The track is not affected in this way. When the train passes through the track section, the vertical force generated by the train is concentrated in the area directly below the rails, and the roadbed under the sleepers is subjected to force. The solidification structure formed by the two first solidification areas, the second solidification area and the four third solidification areas can adapt to the impact force generated when the train passes through the rails in the switch area and the stress change of the roadbed in the switch area. The solidification structure of the roadbed is reasonable, which can meet the stress requirements of the roadbed in the switch area during the operation of the train, and can delay the deterioration of the ballasted track structure in the switch area. At the same time, the solidification area of ​​the roadbed in the switch area is reduced, the use of the curing agent is reduced, and the manufacturing cost of the roadbed is reduced, which has good economic benefits. In addition, drainage is carried out by arranging a drainage structure at the bottom of the solidified roadbed, which can avoid the damage of the solidification structure caused by the accumulation of rainwater in the ballast layer, and make the solidification structure not easily eroded by rainwater.

[0078] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0080] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A turnout track structure, characterized in that: The turnout track structure comprises a sleeper (30), a plurality of steel rails (20) and a ballast (10) for supporting the plurality of steel rails (20), wherein the ballast comprises: A ballast layer, the ballast layer having a sleeper support portion (11), the sleeper support portion (11) comprising a curing structure and a non-curing structure (114), the curing structure and the sleeper (30) both being connected to the non-curing structure (114); the curing structure comprising a plurality of first curing areas (111) and a second curing area (112) connected to the plurality of first curing areas (111), wherein the plurality of first curing areas (111) are arranged at intervals in a horizontal direction perpendicular to an extending direction of the ballast layer; Each of the steel rails (20) comprises: Switching part (21); Lianruebu (22); A fork rear portion (23), wherein the track portion (22) is arranged between the switch portion (21) and the fork rear portion (23), and the switch portion (21) and the fork rear portion (23) are both connected to the track portion (22), wherein a plurality of the first solidified areas (111) are arranged in a one-to-one correspondence with a plurality of the switch portions (21) of a plurality of the rails (20) in a vertical direction, and the second solidified areas (112) are arranged in a vertical direction in a corresponding manner with all the track portions (22).

2. The turnout track structure according to claim 1, characterized in that: The curing structure further comprises a plurality of third curing zones (113), wherein the plurality of third curing zones (113) are arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer, the plurality of third curing zones (113) are all connected to the second curing zone (112), and the second curing zone (112) is located between the plurality of first curing zones (111) and the plurality of third curing zones (113).

3. The turnout track structure according to claim 2, characterized in that: The cross section of at least one of the first curing zone (111), the second curing zone (112) and the third curing zone (113) is trapezoidal or rectangular.

4. The turnout track structure according to claim 1, characterized in that: The switch portion (22) comprises a first rail segment (221) and a second rail segment (222) having an included angle with the first rail segment (221); the first rail segment (221) and the second rail segment (222) are both connected to the switch portion (21); and a second solidification zone (112) is supported below all the first rail segments (221) and all the second rail segments (222).

5. The turnout track structure according to claim 4, characterized in that: The curing structure further comprises a plurality of third curing areas (113), the plurality of third curing areas (113) being arranged at intervals in a horizontal direction perpendicular to the extension direction of the ballast layer, the plurality of third curing areas (113) being connected to one second curing area (112), and one second curing area (112) being located between the plurality of first curing areas (111) and the plurality of third curing areas (113); the fork rear portion (23) comprising a first fork section (231) and a second fork section (232), the first fork section (231) being connected to the first rail section (221), the second fork section (232) being connected to the second rail section (222), and the plurality of third curing areas (113) being arranged in a one-to-one correspondence with the plurality of first fork sections (231) and the plurality of second fork sections (232) in a vertical direction.

6. The turnout track structure according to any one of claims 1, 2, 4 and 5, characterized in that: The sleeper (30) is arranged on the ballast bed (10), and the steel rail (20) is arranged on a side of the sleeper (30) away from the ballast bed (10).

7. The turnout track structure according to claim 6, characterized in that: The switch area track structure also includes a fastener (40), and the steel rail (20) is fixedly connected to the sleeper (30) via the fastener (40).

8. The turnout track structure according to any one of claims 1, 2, 4 and 5, characterized in that: The turnout area track structure further comprises a drainage structure (50) arranged below the ballast (10).

9. The turnout track structure according to claim 8, characterized in that: The drainage structure (50) is a drainage mat with through holes; or, the drainage structure (50) is a layered structure paved with crushed stones; or, when the turnout area track structure is installed on the roadbed surface layer (60), the drainage structure (50) is bent into a "human" shape.

Images