CN213232971U - A switch district track structure that is used for railway roadbed in switch district and has it - Google Patents

Abstract

The utility model provides a switch district track structure that is used for railway roadbed in switch district and has it. The ballast bed comprises: the railway ballast layer is provided with a sleeper supporting part, and the sleeper supporting part comprises a curing structure; the curing structure comprises a plurality of first curing zones and a second curing zone connected with the first curing zones, wherein the first curing zones are arranged at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer. The technical scheme of the utility model the reasonable solidification of switch district road bed has been realized.

Description

A switch district track structure that is used for railway roadbed in switch district and has it

Technical Field

The utility model relates to a railway equipment technical field particularly, relates to a switch district track structure that is used for railway roadbed in switch district and has it.

Background

The traditional ballast track structure has a series of advantages of strong maintainability, good elasticity and the like, but due to the characteristics of the granular particles forming the ballast bed ballast, the track has a series of problems of weak geometric state maintaining capability, easy crushing of ballast particles, easy degradation of the ballast bed and the like. The turnout is a main structure for realizing train line switching operation and is also a weak link of a railway line. The impact that forms when the train passes through switch portion, the company rut portion of switch district track structure easily causes that switch district track structure's frame size is bad, geometric deformation, and then influences the circuit ride comfort, causes and shakes the car phenomenon. Compared with a main track ballast track, the steel rail structure in the turnout area is complex, so that the roadbed in the turnout area is stressed unevenly, is easy to deteriorate and is difficult to maintain, and if the treatment is not good, the defects of uneven rigidity of the roadbed, local empty suspension of a turnout sleeper and the like can be caused, and the safe operation of a train is seriously threatened.

Therefore, how to realize reasonable solidification of the turnout zone track bed is an urgent problem to be solved in the application.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a switch district track structure that is used for the railway roadbed in switch district and has it, can realize the reasonable solidification of switch district railway roadbed.

In order to achieve the above object, according to an aspect of the present invention, there is provided a track bed for a switch zone, the track bed comprising: the railway ballast layer is provided with a sleeper supporting part, and the sleeper supporting part comprises a curing structure; the curing structure comprises a plurality of first curing zones and a second curing zone connected with the first curing zones, wherein the first curing zones are arranged at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer.

Furthermore, the curing structure also comprises a plurality of third curing zones, the third curing zones are arranged at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer, the third curing zones are connected with the second curing zone, and the second curing zone is positioned between the first curing zones and the third curing zones.

Further, at least one of the first, second and third curing zones is trapezoidal or rectangular in cross-section.

According to the utility model discloses an on the other hand provides a switch district track structure, and switch district track structure includes a plurality of rails and is used for supporting the ballast bed of a plurality of rails, and the ballast bed is foretell ballast bed.

Further, each rail includes: a switch unit; a connecting track portion; the switch back part, wherein, the switch portion sets up between switch portion and switch back part, and switch portion and switch back part all are connected with the switch portion, and wherein, a plurality of first solidification zone and a plurality of switch portions of a plurality of rail correspond the setting in the vertical direction, and the second solidification zone corresponds the setting with each switch portion in the vertical direction.

Further, the switch portion includes a first rail section and a second rail section having an included angle with the first rail section, the first rail section and the second rail section are both connected to the switch portion, and one or more second curing zones are supported below each of the first rail section and each of the second rail section.

Furthermore, the curing structure further comprises a plurality of third curing zones which are arranged at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer, the plurality of third curing zones are connected with one second curing zone, and the one second curing zone is positioned between the plurality of first curing zones and the plurality of third curing zones; the switch rear portion includes first switch section and second switch section, and first switch section is connected with first rail section, and the second switch section is connected with the second rail section, and a plurality of third solidification district and first switch section and second switch section all correspond the setting in vertical direction.

Furthermore, the track structure in the turnout area further comprises a sleeper, the sleeper is arranged on the track bed, and the steel rail is arranged on one side, far away from the track bed, of the sleeper.

Furthermore, the track structure in the turnout area also comprises a fastener, and the steel rail is fixedly connected with the sleeper through the fastener.

Further, the track structure of the turnout zone also comprises a drainage structure arranged below the track bed.

Further, the drainage structure is a drainage mat with through holes; or the drainage structure is a layered structure formed by paving broken stones; or after the track structure in the turnout area is installed on the surface layer of the roadbed, the drainage structure is bent into a herringbone shape.

Use the technical scheme of the utility model, a roadbed for switch district has the solidification structure of the second solidification zone of being connected including a plurality of first solidification zones and with a plurality of first solidification zones, when this roadbed is applied to two rails in switch district, each rail all includes switching portion and the continuous rut portion of being connected with switching portion, according to the atress condition of switch district roadbed, a plurality of first solidification zones set up with a plurality of switching portions one-to-one in vertical direction, second solidification zone and a plurality of continuous rut portion correspond the setting in vertical direction, thus, the solidification structure can adapt to the stress distribution condition of switch district roadbed better, play reasonable supporting role, the reasonable solidification of switch district roadbed has been realized, can satisfy the stress requirement to switch district roadbed in the train operation process.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic cross-sectional structural view of a rail and a solidification structure of an embodiment of a turnout zone track structure according to the present invention;

figure 2 shows a cross-sectional view of the location of the connecting track portion of an embodiment of a switch zone track structure according to the present invention; and

fig. 3 shows a cross-sectional view of the location of the switch portion of an embodiment of the switch zone track structure according to the present invention.

Wherein the figures include the following reference numerals:

10. a ballast bed; 11. a sleeper support; 111. a first curing zone; 112. a second curing zone; 113. a third curing zone; 114. a non-cured structure; 20. a steel rail; 21. a switch unit; 22. a connecting track portion; 221. a first rail segment; 222. a second rail segment; 23. a rear fork portion; 231. a first switch section; 232. a second switch section; 30. a sleeper; 40. a fastener; 50. a drainage structure; 60. and (5) a roadbed surface layer.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The switch zone comprises a straight and lateral rail overlapping section (the overlapping section refers to the switch portion 22 of the application), and the inventor researches and discovers that when a train passes through the switch zone, before the train enters the straight and lateral rail overlapping section and after the train passes through the straight and lateral rail overlapping section, under the action of actual train load, only a track bed below a rail generates stress to the train, the stress is distributed in an inverted saddle shape, the track bed mainly leaning against the lower part of the rail bears the downward acting force of the rail, and the track bed in the middle part of a sleeper is basically not influenced; when a train passes through a section with overlapped straight and lateral rail sections, the acting force in the vertical direction generated when the train passes through the section along a single straight direction or a single lateral direction is concentrated in the area right below the steel rail, and the railway beds below the sleepers are all stressed. In order to provide a track bed that can adapt to above-mentioned stress variation, the utility model discloses reach the embodiment of the utility model provides a track bed of reasonable solidification.

As shown in fig. 1-3, embodiments of the present invention provide a track bed for a switch area.

This railway roadbed 10 includes the railway ballast layer, and the railway ballast layer has sleeper supporting part 11, and sleeper supporting part 11 includes the solidification structure, and the solidification structure includes two first solidification zone 111 and the second solidification zone 112 of being connected with two first solidification zone 111, and wherein, two first solidification zone 111 interval arrangements on the horizontal direction of perpendicular to railway ballast layer extending direction. The switch area includes two rails 20 and the track bed 10 is used to support the two rails 20. Each of the rails 20 includes a switch portion 21, a switch portion 22, and an rear fork portion 23, wherein the switch portion 22 is disposed between the switch portion 21 and the rear fork portion 23, and the switch portion 21 and the rear fork portion 23 are connected to the switch portion 22.

When the track bed 10 is applied to a steel rail structure of a turnout area, the two first curing areas 111 and the two switch portions 21 are arranged in a one-to-one correspondence mode in the vertical direction, the second curing area 112 and the two switch portions 22 are arranged in a corresponding mode in the vertical direction, according to the stress condition of the track bed of the turnout area, when a train passes through the switch portions 21, only the track bed below the steel rail generates stress to the track bed, the track bed in the middle of the sleeper is basically not affected, and when the train passes through the switch portions 22, the track bed below the sleeper is all stressed, therefore, the curing structure formed by the two first curing areas 111 and the second curing area 112 can adapt to the impact force generated when the train passes through the steel rail of the turnout area and the stress change of the track bed in the turnout area, and the curing structure of the track bed is.

According to the above situation, before the train enters the straight and side rail overlapping sections (i.e. when the train passes through the switch 21), the track bed in the middle of the sleeper is not affected basically, therefore, in the embodiment of the present invention, the arrangement of the two first curing zones 111 is: the ballast layer is arranged at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer; two first solidification areas 111 can play reasonable supporting role, the railway ballast between two first solidification areas 111 need not to solidify, set up like this and do not influence the supporting role that the railway ballast bed played to the sleeper, and simultaneously, still reduced the use amount of curing agent, thereby the manufacturing cost of railway bed, and the rainwater can flow out from the railway ballast gap that does not carry out the solidification between two first solidification areas 111, avoided leading to the emergence of first solidification area 111 damage situation because of the railway ballast lamination rainwater, two first solidification areas 111 arrange rationally, can satisfy the stress requirement, help reduce cost, good economic benefits has, it is not easily corroded by the rainwater, can increase the life of first solidification area 111.

Can know through above-mentioned analysis, the utility model discloses a ballast bed in the embodiment has realized the reasonable solidification of switch district ballast bed, under the circumstances that the assurance can satisfy the stress requirement, reduces the solidification region of switch district ballast bed, helps reduce cost, has good economic benefits.

Of course, in an alternative embodiment not shown in the drawings of the present invention, the curing structure may further include more than three first curing zones 111 and a second curing zone 112 connected to the more than three first curing zones 111 according to actual needs, wherein the more than three first curing zones 111 are arranged at intervals in a horizontal direction perpendicular to an extending direction of the ballast layer.

As shown in fig. 1, in the embodiment of the present invention, the curing structure further includes four third curing regions 113, the four third curing regions 113 are disposed at intervals in the horizontal direction perpendicular to the extending direction of the ballast layer, the four third curing regions 113 are all connected to the second curing region 112, and the second curing region 112 is located between the two first curing regions 111 and the four third curing regions 113.

In the above arrangement, the solidification structure includes two first solidification zones 111, a second solidification zone 112 and four third solidification zones 113 connected in sequence, a unique solidification structure for the track bed of the switch zone is formed by the two first solidification zones 111, the second solidification zone 112 and the four third solidification zones 113, when the track bed 10 is applied to the rail structure of the switch zone, the four third solidification zones 113 and the switch back parts 23 of the two rails 20 are arranged one by one in the vertical direction, according to the stress condition of the track bed of the switch zone, when a train passes through the switch back part 23 (i.e. after the train passes through the overlapped sections of the straight and side rails), only the track bed located below the rails generates stress to the train, the track bed in the middle part of the sleeper is basically not affected, therefore, the third solidification zone 113 of the solidification structure can adapt to the impact force generated when the train passes through the switch back part 23 of the rails of the switch zone and the stress change of the track bed in the switch zone, the curing structure of the ballast bed is reasonable. And, four third solidification zones 113 are set up at the interval on the horizontal direction of perpendicular to railway ballast layer extending direction, can play reasonable supporting role to the sleeper, railway ballast between four third solidification zones 113 need not to solidify, set up the supporting role that does not influence the railway roadbed and play to the sleeper like this, can also reduce the use amount of curing agent, reduce the manufacturing cost of railway roadbed, simultaneously, the rainwater can flow out in the railway ballast gap that does not solidify between four third solidification zones 113, can avoid because of the railway ballast lamination rainwater leads to the emergence of third solidification zone 113 damage situation.

Of course, in an alternative embodiment not shown in the drawings of the present invention, the curing structure may further include more than five third curing regions 113 according to actual needs, the more than five third curing regions 113 are arranged at intervals in a horizontal direction perpendicular to the extending direction of the ballast layer, the more than five third curing regions 113 are all connected to the second curing region 112, and the second curing region 112 is located between the more than two first curing regions 111 and the more than five third curing regions 113.

As shown in fig. 2 and 3, in the embodiment of the present invention, the cross-section of the first curing zone 111, the second curing zone 112 and the third curing zone 113 is trapezoidal.

The cross section refers to a section of the first curing zone 111, the second curing zone 112 and the third curing zone 113 in a vertical direction perpendicular to an extending direction of the ballast layer; the first curing zone 111, the second curing zone 112 and the third curing zone 113 of the trapezoidal structure have higher stability and can bear larger load.

Of course, in an alternative embodiment not shown in the drawings of the present invention, the cross section of two of the first curing zone 111, the second curing zone 112 and the third curing zone 113 may also be set to be trapezoidal according to actual needs; alternatively, at least one of the first solidified zone 111, the second solidified zone 112 and the third solidified zone 113 may have a rectangular cross-section or other shape that can support the force applied to the turnout zone bed.

Preferably, the cured structure is formed by bonding and curing the ballast by a curing agent.

Preferably, the curing agent may be polyurethane, which may be polyurethane commonly used in the related art for preparing a polyurethane cured ballast bed.

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. The inventor of the application firstly applies the polyurethane curing track bed technology to the track bed of the turnout area, thereby reasonably curing the track bed and providing the turnout area track structure which meets the stress requirement of the turnout area. The polyurethane solidified track bed has the advantages of good elasticity and maintainability of a gravel track bed, good stability of the whole track bed, long service life, less maintenance operation of the track bed and the like, and can be applied to a ballast track structure in a turnout area, and also can play a series of aims of slowing down maintenance of the track bed, improving the running quality of a train, delaying the deterioration of the turnout and the like.

As shown in fig. 1 to fig. 3, the present invention provides a track structure of a switch area, the track structure of 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.

The track bed 10 is arranged below the two rails 20, and the track bed 10 supports the two rails 20; since the switch zone track structure includes the aforementioned track bed, the switch zone track structure also has the aforementioned advantages of the aforementioned track bed, and will not be described herein again.

Of course, in an alternative embodiment not shown in the drawings of the present invention, the track structure of the turnout area may further include more than three rails 20 and a track bed 10 for supporting the more than three rails 20 according to actual needs, and the track bed 10 is the track bed.

As shown in fig. 1 and fig. 3, in the embodiment of the present invention, the track structure of the switch area includes two steel rails 20, each steel rail 20 includes a switch portion 21, a switch portion 22 and a switch rear portion 23, wherein the switch portion 22 is disposed 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 switch portion 22, wherein two first curing areas 111 and two switch portions 21 of two steel rails 20 are disposed in a vertical direction, and the second curing area 112 and two switch portions 22 of two steel rails 20 are disposed in a vertical direction.

In the above-mentioned setting, two first solidification zone 111 one-to-one set up in the below of two switch portions 21 in vertical direction, and each first solidification zone 111 is used for supporting each switch portion 21, and second solidification zone 112 corresponds the setting in the below of two continuous rut portions 22 in vertical direction for support two continuous rut portions 22, can adapt to the stress distribution condition of two continuous rut portions 22 below better, play reasonable supporting role, satisfy the stress requirement.

Of course, in an alternative embodiment not shown in the drawings of the present invention, three or more rails 20 may be provided according to actual needs, wherein three or more first curing zones 111 are provided corresponding to three or more switch portions 21 in the vertical direction, and the second curing zone 112 is provided corresponding to a connecting point portion 22 of each rail 20 in the vertical direction.

In an embodiment of the present invention, as shown in fig. 1, the connecting track portion 22 includes a first rail section 221 and a second rail section 222 having an included angle with the first rail section 221, the first rail section 221 and the second rail section 222 are both connected to the switch portion 21, and a second curing zone 112 is supported below the two first rail sections 221 and the two second rail sections 222.

In the above arrangement, the first rail section 221 and the second rail section 222 form the overlapped section of the straight and lateral rails in the turnout area, and as can be seen from the above, when the train passes through the overlapped section of the straight and lateral rails, the track bed below the sleeper is stressed; a second curing area 112 is arranged below the two first rail sections 221 and the two second rail sections 222, the cross section of the second curing area 112 is located below the cross sections of the two first rail sections 221 and the two second rail sections 222 in the vertical direction perpendicular to the extending direction of the railway ballast layer (as shown in fig. 2), the second curing area 112 is supported below the two first rail sections 221 and the two second rail sections 222 as a whole, the second curing area 112 is uniform in stress and high in structural stability, can bear larger load, and can enable the track structure of the turnout area to meet the requirement of the train on the impact resistance of the track structure when the train passes through the turnout area, so that the track structure of the turnout area can be better protected.

Of course, in an alternative embodiment of the present invention, which is not shown in the drawings, it is also possible to support a plurality of second curing zones 112 below each first rail section 221 and each second rail section 222, according to the actual needs.

As shown in fig. 1, in the embodiment of the present invention, the switch back portion 23 includes a first switch section 231 and a second switch section 232, the first switch section 231 is connected to the first rail section 221, the second switch section 232 is connected to the second rail section 222, and four third curing zones 113 are disposed in a one-to-one correspondence with the two first switch sections 231 and the two second switch sections 232 in the vertical direction.

In the above technical solution, each rail 20 of the switch area includes a switch portion 21, a first rail segment 221 and a first switch segment 231 connected to each other, and a second rail segment 222 and a second switch segment 232 connected to each other, and an end of the first rail segment 221 away from the first switch segment 231 is connected to the switch portion 21, and an end of the second rail segment 222 away from the second switch segment 232 is also connected to the switch portion 21; four third solidification zone 113 and two first trouble sections 231 and two second trouble sections 232 set up in vertical direction one-to-one, can adapt to the stress distribution condition of first trouble section 231 and second trouble section 232 below better, play reasonable supporting role, when satisfying the stress requirement, can reduce the use amount of curing agent, reduce manufacturing cost, good economic benefits has, and difficult by the rainwater erosion, help increasing third solidification zone 113's life.

Specifically, as shown in fig. 1 to 3, in the embodiment of the present invention, two switch portions 21 and two first curing zones 111 are disposed in a one-to-one correspondence in the vertical direction, and two first rail sections 221 and two second rail sections 222 are disposed in a corresponding correspondence with one second curing zone 112 in the vertical direction. It should be noted that, in the embodiment of the present invention, the curing structure includes four third curing zones 113, two first switch sections 231 and two second switch sections 232 are disposed in one-to-one correspondence with the four third curing zones 113 in the vertical direction, preferably, two adjacent third curing zones 113 may be disposed as a split structure or an integrated structure, in the embodiment of the present invention, for convenience of construction, two adjacent third curing zones 113 located in the middle position are disposed as an integrated structure (as shown in fig. 1), so that the adjacent second switch sections 232 and the first switch sections 231 of the two rails 20 are disposed in correspondence with the two integrally formed third curing zones 113, the first switch sections 231 and the second switch sections 232 of the two rails 20 far from the middle position are disposed in one-to-one correspondence with the two third curing zones 113 located at both sides, so as to realize reasonable curing of the switch beds, and make each curing zone better adapt to the stress distribution condition of the switch beds, play a reasonable supporting role.

Of course, in an alternative embodiment not shown in the drawings of the present invention, more third curing zones 113 may be provided according to actual needs, for example, five, more than five third curing zones 113 are provided corresponding to the first fork section 231 and the second fork section 232.

As shown in fig. 2 and 3, in the embodiment of the present invention, the track structure of the turnout area further includes a sleeper 30, the sleeper 30 is disposed on the track bed 10, and the rail 20 is disposed on one side of the sleeper 30 away from the track bed 10.

In the above arrangement, the track structure in the turnout area comprises a steel rail 20, a sleeper 30 and a track bed 10 which are sequentially arranged from top to bottom, the steel rail 20 is connected with the track bed 10 through the sleeper 30, the track bed 10 supports the sleeper 30, and the sleeper 30 supports the steel rail 20, so that the support effect of the track bed 10 on the steel rail 20 is realized.

Preferably, the ties 30 may be connected to the track bed 10 by a curing agent; specifically, the turnout zone track structure comprises a curing agent bonding layer arranged between the curing structure and the sleeper 30, and the curing agent bonding layer is used for bonding the curing structure and the sleeper 30 into an integral structure; through the arrangement, the overall stability of the structure and the performance of the track structure in the turnout area can be improved; this curing agent tie coat can be for forming when the solidification structure is formed in order to form to the railway roadbed 10 pouring curing agent of switch district track structure, makes solidification structure and sleeper 30 connect as an organic wholely, forms firm composite construction, and the composite construction who forms like this has certain elasticity, has improved the wholeness of railway roadbed 10 to switch district track structure's stationarity and travelling comfort have been improved. However, the connection of the sleepers 30 to the track bed 10 is not limited to this manner, and those skilled in the art can select an appropriate connection manner according to the actual situation.

As shown in fig. 2 and fig. 3, in the embodiment of the present invention, the track structure in the turnout area further includes a fastener 40, and the steel rail 20 is fixedly connected to the sleeper 30 through the fastener 40.

In the above arrangement, the clip 40 is used to secure the rail 20 to the sleeper 30.

Preferably, a clip connector may be provided on the side of the tie 30 that is connected to the rail 20, the clip connector being adapted to cooperate with the clip 40 to secure the rail 20 to the tie 30. Preferably, the clip connector may be an interface provided on a surface of the tie 30 for securing the clip 40, thereby securing the rail 20 via the clip 40.

Preferably, as shown in fig. 2 and 3, in the embodiment of the present invention, the sleeper support 11 further includes a non-curing structure 114, and the non-curing structure 114 is connected to both the curing structure and the sleeper 30. The ballast that does not need to be cured in the tie support 11 forms the uncured structure 114.

As shown in fig. 2 and 3, in the embodiment of the present invention, the track structure of the turnout zone further includes a drainage structure 50 disposed below the track bed 10.

In the above arrangement, the drainage structure 50 is used to drain water flowing out of the track bed 10, particularly rainwater, and therefore, it is possible to prevent the water flowing out of the track bed 10 from being accumulated below the track bed 10 and damaging the track bed 10, and the track bed 10 is less likely to be corroded by water.

Preferably, the drainage structure 50 may be a drainage mat having through holes or may be a layered structure laid with crushed stones. Of course, in other alternative embodiments, the drainage structure 50 may be other structures capable of draining water.

Specifically, as shown in fig. 2 and 3, the utility model discloses an in the embodiment, switch district track structure sets up on roadbed surface layer 60, and roadbed surface layer 60 reduces from its center to both sides highly ascending in vertical side gradually from inside to make roadbed surface layer 60 have the slope (also called "people" font), like this, is favorable to discharging the water of railway roadbed 10 below, and the scope of this slope is 1 ~ 10%. Preferably, the slope is 4%, and the embodiment of the utility model adopts a mode that 4% herringbone is combined with the drainage pad to drain.

It should be noted that, in the vertical direction perpendicular to the extending direction of the ballast layer, the center of the track structure in the turnout area coincides with the center of the roadbed surface layer 60; in this way, when the drainage structure 50 is laid on the roadbed surface 60, the drainage structure 50 naturally forms a "herringbone" shape due to the gradient of the roadbed surface 60, that is, after the turnout zone track structure is installed on the roadbed surface 60, the drainage structure 50 is bent into a "herringbone".

The roadbed of the roadbed surface layer 60 may be a railroad roadbed, a roadbed in a tunnel, a roadbed on a bridge body, or a roadbed in another application place.

The following describes in detail the preparation process of the track structure of the turnout zone according to the present invention with reference to fig. 1 to 3:

step S10: paving a drainage structure 50 on the roadbed surface layer 60, and completing construction preparation work of a track structure in a ballast turnout area;

step S20: according to the construction technical specification of the high-speed railway, completing construction of a ballast track structure in a turnout area and laying work of the turnout;

step S30: carrying out on-site pouring construction on a track bed 10 in a track structure of a turnout area;

wherein, step S30 includes the following steps:

step S31: firstly, pouring a track bed 10 of a track structure of a turnout area along a steel rail 20 to form a continuous trapezoidal section solidification structure below the steel rail 20 (as shown in fig. 2, two first solidification areas 111 corresponding to a switch part 21 are solidified by adopting a double trapezoidal section structure);

step S32: then, the center between the adjacent rails 20 is poured on the track bed 10 of the straight and lateral rail overlapping sections (i.e. the connecting track portions 22) in the track structure of the turnout area, so that the track bed 10 of the straight and lateral rail overlapping sections forms a full-section solidification structure along the vertical direction perpendicular to the extending direction of the ballast layer (as shown in fig. 3, one second solidification area 112 corresponding to the connecting track portion 22 is solidified by using the full-section structure).

The embodiment of the utility model provides a solidification structure which can better adapt to the stress distribution condition of the turnout zone track bed, realizes the reasonable solidification of the turnout zone track bed, meets the stress requirement, and can delay the deterioration of the ballast track structure in the turnout zone according to the stress condition of the turnout zone track bed and reasonably designs the solidification structure of the turnout zone track bed and the distribution area of each solidification zone; the curing structure combining the double-trapezoid cross section and the full cross section is adopted, and the technical economy is high.

As shown in figure 1, in the embodiment of the present invention, a turnout is taken as an example, a double-trapezoid section solidification is adopted within a range from a starting point of the turnout to 10m, and a full-section solidification form is adopted within a range from 10m to 37.8 m. The mode that adopts double trapezoid section and full section structure to combine together has improved technical economy nature, has realized the reasonable solidification of switch district polyurethane solidification railway roadbed.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the curing structure comprises two first curing zones, a second curing zone and four third curing zones, a unique curing structure for a track bed of a turnout zone is formed by the two first curing zones, the second curing zone and the four third curing zones, when the track bed is applied to a steel rail structure of the turnout zone, the two first curing zones and two switch parts are arranged in a one-to-one correspondence mode in the vertical direction, the second curing zone and two switch parts are arranged in a corresponding mode in the vertical direction, the four third curing zones and the rear parts of the turnout of the two steel rails are arranged in a corresponding mode in the vertical direction, according to the stress condition of the track bed of the turnout zone, when a train passes through the switch parts and the rear parts of the turnout, only the track bed below the steel rail generates stress on the track bed, the track bed mainly leaning against the steel rail bears the downward acting force of the steel rail, the track bed in the middle part of the sleeper is basically not influenced, when the train passes through the switch parts, the acting force generated by the train along the vertical direction is concentrated in the area under the steel rail, the track bed positioned under the sleeper is stressed, the solidified structure formed by the two first solidified areas, the second solidified area and the four third solidified areas can adapt to the impact force generated when the train passes through the steel rail of the turnout area and the stress change of the track bed of the turnout area, the curing structure of the track bed is reasonable, the stress requirement on the track bed in the turnout area in the running process of a train can be met, the deterioration of the ballast track structure in the turnout area can be delayed, meanwhile, the solidifying area of the track bed in the turnout area is reduced, the use amount of the solidifying agent is reduced, the manufacturing cost of the track bed is reduced, and the economic benefit is good, and drainage is carried out by arranging a drainage structure at the lower part of the solidified ballast bed, so that the condition that the solidified structure is damaged due to rainwater pressure of ballast layers can be avoided, and the solidified structure is not easy to be corroded by rainwater.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A track bed for a switch area, the track bed comprising:

the railway ballast layer is provided with a sleeper supporting part (11), and the sleeper supporting part (11) comprises a curing structure; the curing structure comprises a plurality of first curing zones (111) and a second curing zone (112) connected with the plurality of first curing zones (111), wherein the plurality of first curing zones (111) are arranged at intervals in a horizontal direction perpendicular to the extending direction of the ballast layer.

2. The ballast bed according to claim 1, wherein the curing structure further comprises a plurality of third curing zones (113), the plurality of third curing zones (113) being arranged at intervals in a horizontal direction perpendicular to the extending direction of the ballast layer, the plurality of third curing zones (113) each being connected with the second curing zone (112), the second curing zone (112) being located between the plurality of first curing zones (111) and the plurality of third curing zones (113).

3. The ballast bed of claim 2,

at least one of the first, second and third curing zones (111, 112, 113) is trapezoidal or rectangular in cross-section.

4. A switch zone track structure, characterized in that it comprises a plurality of rails (20) and a track bed (10) for supporting a plurality of said rails (20), said track bed (10) being a track bed according to claim 1 or 2.

5. The switch zone track structure according to claim 4, characterized in that each of the rails (20) comprises:

a switch unit (21);

a connecting track portion (22);

an after-point-switch portion (23), wherein the switch portion (22) is disposed between the switch portion (21) and the after-point-switch portion (23), and the switch portion (21) and the after-point-switch portion (23) are both connected to the switch portion (22), wherein the plurality of first solidification zones (111) are disposed to correspond to the plurality of switch portions (21) of the plurality of steel rails (20) in a vertical direction, and the second solidification zone (112) is disposed to correspond to each of the switch portions (22) in a vertical direction.

6. The switch zone track structure according to claim 5, wherein the switch portion (22) comprises a first track segment (221) and a second track segment (222) having an angle with the first track segment (221), the first track segment (221) and the second track segment (222) are each connected to the switch portion (21), and one or more second solidified zones (112) are supported below each of the first track segment (221) and each of the second track segments (222).

7. The turnout zone track structure according to claim 6, wherein said curing structure further comprises a plurality of third curing zones (113), a plurality of said third curing zones (113) are arranged at intervals in a horizontal direction perpendicular to the extending direction of said ballast layer, a plurality of said third curing zones (113) are connected with one said second curing zone (112), one said second curing zone (112) is located between a plurality of said first curing zones (111) and a plurality of said third curing zones (113); the rear fork portion (23) comprises a first fork section (231) and a second fork section (232), the first fork section (231) is connected with the first rail section (221), the second fork section (232) is connected with the second rail section (222), and the third solidification zones (113) and the first fork section (231) and the second fork section (232) are arranged in a corresponding mode in the vertical direction.

8. The switch area track structure according to any one of claims 4 to 7, characterized in that the switch area track structure further comprises a sleeper (30), the sleeper (30) being disposed on the track bed (10), the rail (20) being disposed on a side of the sleeper (30) remote from the track bed (10).

9. The switch area track structure of claim 8, further comprising a fastener (40), wherein the rail (20) is fixedly connected to the tie (30) by the fastener (40).

10. The switch zone track structure according to any one of claims 4 to 7, characterized in that the switch zone track structure further comprises a drainage structure (50) disposed below the track bed (10).

11. The turnout zone track structure according to claim 10, wherein said drainage structure (50) is a drainage mat with through holes; or the drainage structure (50) is a layered structure formed by paving broken stones; or after the turnout area track structure is installed on a roadbed surface layer (60), the drainage structure (50) is bent into a herringbone shape.

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