Vibration reduction assembly type solidified ballast bed track structure suitable for turnout zone

Abstract

The utility model discloses a vibration reduction assembly type solidified ballast bed track structure suitable for a turnout zone, which comprises a switch tie positioned on a solidified broken stone composite unit block. The adjusting layer is positioned on the bottom surface and / or the top surface of the solidified broken stone composite unit block; macadam railway ballasts are arranged around the switch tie and / or the solidified macadam composite unit blocks. The utility model provides a vibration reduction assembly type solidified ballast bed track structure suitable for a turnout zone, which aims to solve the problem of high maintenance cost of the turnout zone in the prior art, and achieves the purposes of improving the vibration reduction performance of a turnout zone ballast bed and reducing the later maintenance cost and workload.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ballast bed structure of turnout area, concretely relates to a kind of vibration-damping assembly type solidified ballast bed track structure suitable for turnout area. BACKGROUND

[0002] Turnout is the main structure to realize train switching operation, and is also the weak link of railway line. The impact formed by train passing through turnout switch and frog part affects the service life of each component of turnout, causes diseases such as mud boiling and poor track stability, and further affects train safety. Existing research shows that the diseases of turnout are often related to the state of lower ballast bed, and it is difficult to repair and cure after the diseases of turnout area ballast bed, so a large amount of skylight, manpower, material resources and financial resources need to be invested for maintenance of turnout area every year. In addition, in actual operation, due to the particularity of the structure of turnout area, the negative effects of vibration and noise are large; some unreasonable stiffness matching modes may even cause abnormal wear of steel rail and wheel, which inevitably increases the working cost of maintenance and repair.

[0003] The polyurethane solidified ballast bed technology provides a new idea for solving the maintenance and repair and elastic retention problems of traditional ballasted track, and has become the key research direction of track structure optimization in recent years. However, due to the technical problems such as complex track structure, large difference of pouring section and difficulty in setting pouring point according to theoretical distance in turnout area, the application of cast-in-place polyurethane solidified ballast bed technology in turnout area always has great difficulty. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of vibration-damping assembly type solidified ballast bed track structure suitable for turnout area to solve the problem of high working cost of maintenance and repair in existing technology, realize the purpose of improving the vibration reduction performance of turnout area ballast bed, reducing the maintenance cost and workload in later period.

[0005] The utility model realizes the following technical scheme:

[0006] A kind of vibration-damping assembly type solidified ballast bed track structure suitable for turnout area, including turnout sleeper, the turnout sleeper is located on solidified macadam composite unit block;It further includes adjustment layer, the adjustment layer is located on the bottom surface and / or top surface of the solidified macadam composite unit block;The turnout sleeper and / or the periphery of solidified macadam composite unit block has macadam ballast.

[0007] In view of the problem of high maintenance and repair cost of turnout area in the prior art, the utility model provides a kind of vibration reduction assembly type solidification track bed track structure suitable for turnout area, the turnout sleeper is placed on solidification macadam composite unit block, and the turnout sleeper is supported by solidification macadam composite unit block, and meanwhile, macadam ballast is filled around to form track bed structure.The skilled person in the art should understand that the solidification macadam composite unit block is prefabricated block formed by solidifying macadam with solidification material such as polyurethane.The application can significantly improve the integrity and stability of turnout area track bed, improve the vibration reduction performance of turnout area track bed, reduce the maintenance cost and workload in later period.In addition, since the application does not need cast-in-place, it can overcome the defects such as complex track structure of turnout area, large difference of pouring section, difficult to control pouring point, etc.In addition, the application also provides an adjusting layer in the track bed structure, which can be located on the bottom and / or top surface of the solidification macadam composite unit block, to adjust the height and flatness of the track bed, and further improve the structural stability of the track installed thereon.

[0008] Further, it further includes a vibration reduction pad located at the bottom of the solidification macadam composite unit block.

[0009] Traditional vibration reduction pad track bed needs to lay vibration reduction pad before track structure construction, which brings additional construction process and is not conducive to the reconstruction of existing lines.In addition, traditional vibration reduction pad track bed needs to be fully laid with vibration reduction pad at the bottom.Compared with this traditional process, the solidification macadam composite unit block used in the present application is a prefabricated structure, which can be bonded with vibration reduction pad simultaneously during prefabrication in the factory, without additional process for on-site construction, which is convenient for the reconstruction of existing lines.The present application only needs to set vibration reduction pad at the bottom of the solidification macadam composite unit block, without the need for full paving of the track bed bottom area, which has better economy.

[0010] Further, the bottom of the turnout sleeper is consolidated in the solidification macadam composite unit block.

[0011] In the present application, the bottom of the turnout sleeper is consolidated in the solidification macadam composite unit block during prefabrication in the factory, so that the turnout sleeper and the solidification macadam composite unit block are firmly bonded together to form an integral structure.Of course, in the present application, the adjusting layer is necessarily located on the bottom surface of the solidification macadam composite unit block.The advantages of the present application include: strong integrity, firm bonding between the turnout sleeper and the solidification macadam composite unit block, good longitudinal and transverse stability;in the construction process, only the integral structure needs to be installed, and the block adjusting layer construction is completed at one time, so the construction efficiency is high and the construction process is simple.

[0012] Further, the top surface of the solidification macadam composite unit block is provided with a mounting groove matched with the turnout sleeper, and the bottom of the turnout sleeper is placed in the mounting groove.

[0013] The turnout and the solidified gravel composite unit block in the scheme are of a split structure, and the turnout needs to be installed in the corresponding installation groove in the construction process. Of course, in the scheme, the adjustment layer is necessarily located on the top surface of the solidified gravel composite unit block, that is, the adjustment layer is arranged in the installation groove to perform leveling and adjustment, and then the turnout is placed on the adjustment layer to achieve the purpose of embedding in the solidified gravel composite unit block. The advantages of the scheme at least include that the turnout and the solidified gravel composite unit block can be separately prefabricated and produced, the production process is simpler, and the production flow is shorter; in the transportation process, the turnout and the composite unit block can be transported separately, so that the stacking is convenient, the transportation efficiency is high, and the transportation cost is low; and since the split design, the vertical and horizontal adjustment of the track structure in the operation process can be completed by adjusting the separate solidified gravel composite unit block, so that the adjustment and maintenance are more convenient and cost-saving.

[0014] Further, there is only one solidified gravel composite unit block under the turnout, and the length of the solidified gravel composite unit block is greater than or equal to the length of the turnout.

[0015] In the scheme, one solidified gravel composite unit block with a relatively large length is completely supported under the turnout, and this arrangement can make the ballast structure have better integrity, but has the defect of higher cost, and is preferably used in the straight and lateral rail overlapping sections of the turnout area, so that the vertical stress concentration under the single straight or lateral turnout condition and the safety and track stress state requirements under the two operation conditions can be better met.

[0016] Further, the projection of the turnout on the plane where the top surface of the solidified gravel composite unit block is located is completely located in the solidified gravel composite unit block. In order to ensure the complete stress and bearing of the single solidified gravel composite unit block on the turnout and ensure the operation safety under the single straight or lateral turnout condition.

[0017] Further, there are only two solidified gravel composite unit blocks under the turnout, and the two solidified gravel composite unit blocks are respectively located at the two ends of the turnout.

[0018] In the scheme, the turnout at the two ends is respectively stressed and borne by two independent solidified gravel composite unit blocks. Since the stress under the rail in the ballast range only presents an inverted saddle shape distribution when passing through the turnout on one side, the ballast in the center of the line in the turnout area is basically not affected, so the scheme can be preferably used in the straight and lateral rail overlapping sections of the non-frog area of the turnout, the switching section, the guard rail section, and the like.

[0019] Further, the turnout includes at least three solidified gravel composite unit blocks, and two of the solidified gravel composite unit blocks are respectively located at the two ends of the turnout.

[0020] In the scheme, the number of the cured macadam composite unit blocks is greater than or equal to 3, and two cured macadam composite unit blocks at two ends of the frog sleeper are respectively located at two ends of the frog sleeper, and the remaining cured macadam composite unit blocks are located between the two cured macadam composite unit blocks.

[0021] Since the cured macadam composite unit blocks of the application are prefabricated in a factory, if a single block structure is adopted, special large prefabrication tools need to be manufactured, and meanwhile, the prefabrication pouring effect is affected by the oversized composite unit blocks. Therefore, each cured macadam composite unit block is designed to be smaller or the same size, which is beneficial to factory batch prefabrication and transportation, and has better economy.

[0022] Further, between the two adjacent cured macadam composite unit blocks below the frog sleeper, the macadam ballast is filled to meet the track bed bulk characteristics.

[0023] Further, a plurality of rails are installed on the frog sleeper, and the cured macadam composite unit block is arranged below any rail to ensure the stability of the force.

[0024] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0025] 1. The utility model can significantly improve the integrity and stability of the turnout area track bed, improve the vibration reduction performance of the turnout area track bed, and reduce the later maintenance cost and workload.

[0026] 2. The utility model does not need cast-in-place construction, and can overcome the defects of complex track structure in the turnout area, large pouring section difference, and difficult control of pouring point position.

[0027] 3. The cured macadam composite unit block adopted by the utility model is a prefabricated structure, which can be synchronously bonded with the vibration reduction pad during factory prefabrication, does not bring additional processes to the on-site construction process, and is convenient for the reconstruction of the existing line.

[0028] 4. The utility model only needs to set the vibration reduction pad at the bottom of the cured macadam composite unit block, does not need to completely pave the bottom area of the track bed, and has better economy.

[0029] 5. The utility model can meet the use requirements of different sections of the turnout area, and takes into account the safety and economy. DRAWINGS

[0030] The drawings described herein are used to provide further understanding of the embodiments of the utility model, constitute a part of the application, and do not constitute a limitation on the embodiments of the utility model. In the drawings:

[0031] Figure 1 It is the elevation view of embodiment 1 in the specific embodiment of the utility model;

[0032] Figure 2 This is an elevation view of Example 2 in the specific implementation manner of the utility model;

[0033] Figure 3 This is an elevation view of Example 3 in the specific implementation manner of the utility model;

[0034] Figure 4 This is an elevation view of Example 4 in the specific implementation manner of the utility model;

[0035] Figure 5 This is an elevation view of Example 5 in the specific implementation manner of the present utility model;

[0036] Figure 6 This is an elevation view of Example 6 in the specific implementation manner of the utility model;

[0037] Figure 7 This is an exploded view of Example 6 in the specific implementation manner of the present utility model.

[0038] Markings and corresponding parts names in the accompanying drawings:

[0039] 1-turnout sleeper, 2-cured crushed stone composite unit block, 3-adjustment layer, 4-crushed stone ballast, 5-vibration damping pad, 6-rail. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the examples and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. In the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0041] Example 1:

[0042] A vibration-damping, prefabricated, solidified roadbed track structure suitable for use in turnout areas includes a turnout sleeper 1 positioned on a factory-prefabricated solidified gravel composite unit block 2; crushed stone ballast 4 surrounding the turnout sleeper 1 and / or the solidified gravel composite unit block 2; and vibration-damping pads 5 fixedly bonded to the bottom of the solidified gravel composite unit block 2. Furthermore, this embodiment includes an adjustment layer 3.

[0043] like Figure 1As shown, in the present embodiment, the bottom of the frog sleeper 1 is fixed in the solidified macadam composite unit block 2, that is, the fixed bonding with the frog sleeper 1 is completed during the process of prefabricating the solidified macadam composite unit block 2; and the adjusting layer 3 in the present embodiment is located at the bottom of the solidified macadam composite unit block 2.

[0044] In addition, in the present embodiment, there is only one solidified macadam composite unit block 2 under the frog sleeper 1, and the length of the solidified macadam composite unit block 2 is greater than or equal to the length of the frog sleeper 1. The projection of the frog sleeper 1 on the plane where the top surface of the solidified macadam composite unit block 2 is located is completely located in the solidified macadam composite unit block 2.

[0045] The damping pad 5 in the present embodiment is preferably made of rubber or polyurethane material.

[0046] Compared with the conventional ballast track turnout area and ballastless track turnout area, the present embodiment has a better damping effect. The applicant evaluates the damping effect of the track structure by using the insertion loss evaluation method, and the insertion loss is the difference between the acceleration levels in the presence and absence of the damping pad 5. The field test results show that the frequency division vibration level of the base wall of the present embodiment is 75.931 dB, while the frequency division vibration level of the base wall of the conventional ballastless track turnout is 83.542 dB. Compared with the conventional ballastless track turnout bed, the vertical vibration acceleration vibration level of the base wall of the present embodiment is reduced by 7.611 dB, and therefore has a better damping effect. Compared with the ordinary ballast track turnout bed, when the elastic modulus of the bed structure in the present embodiment and the elastic modulus of the ballast track turnout bed are both 204.0 N / mm 2 , the vertical vibration acceleration vibration level of the base wall of the present embodiment is reduced by 0.816 dB. Therefore, the present embodiment has a better damping effect than the ballast track turnout bed at the same elastic modulus. In addition, since the present embodiment can simultaneously bond the damping pad 5 when prefabricating the solidified macadam composite unit block 2 in the factory, the damping effect is also superior to the cast-in-place polyurethane solidified bed.

[0047] Preferably, the adjusting layer 3 is a grouting bag adjusting layer, that is, a curable material is injected into the grouting bag, which has the advantages of simple construction and easy adjustment.

[0048] Embodiment 2:

[0049] A damping assembly type solidified bed track structure suitable for a turnout area, as shown in Figure 2 The difference between the present embodiment and embodiment 1 is that there are only two solidified macadam composite unit blocks 2 under the frog sleeper 1, and the two solidified macadam composite unit blocks 2 are respectively located at the two ends of the frog sleeper 1.

[0050] Wherein, between the two adjacent solidified gravel composite unit blocks 2 under the frog sleeper 1, the gravel ballast 4 is filled. In addition, a plurality of rails 6 are installed on the frog sleeper 1, and the lower portion of any rail 6 has the solidified gravel composite unit block 2.

[0051] The embodiment is especially suitable for use at the head and tail of the turnout area, such as use in the switch section and guard rail section.

[0052] Embodiment 3:

[0053] A vibration-damping assembled solidified track bed track structure suitable for a turnout area, as shown in Figure 3 The difference between the embodiment and embodiment 2 is that the frog sleeper 1 includes at least three solidified gravel composite unit blocks 2, and two of the solidified gravel composite unit blocks 2 are respectively located at the two ends of the frog sleeper 1.

[0054] Embodiment 4:

[0055] A vibration-damping assembled solidified track bed track structure suitable for a turnout area, as shown in Figure 4 The difference between the embodiment and embodiment 1 is that the top surface of the solidified gravel composite unit block 2 is provided with a mounting groove matched with the frog sleeper 1, and the bottom of the frog sleeper 1 is placed in the mounting groove; that is, the solidified gravel composite unit block 2 and the frog sleeper 1 are a split structure. Correspondingly, the adjustment layer 3 is located on the top of the solidified gravel composite unit block 2, that is, the adjustment layer 3 is located in the aforementioned mounting groove and is pressed by the frog sleeper 1.

[0056] Embodiment 5:

[0057] A vibration-damping assembled solidified track bed track structure suitable for a turnout area, as shown in Figure 5 The difference between the embodiment and embodiment 4 is that there are only two solidified gravel composite unit blocks 2 under the frog sleeper 1, and the two solidified gravel composite unit blocks 2 are respectively located at the two ends of the frog sleeper 1.

[0058] Wherein, between the two adjacent solidified gravel composite unit blocks 2 under the frog sleeper 1, the gravel ballast 4 is filled. In addition, a plurality of rails 6 are installed on the frog sleeper 1, and the lower portion of any rail 6 has the solidified gravel composite unit block 2.

[0059] Embodiment 6:

[0060] A vibration-damping assembled solidified track bed track structure suitable for a turnout area, as shown in Figure 6 and Figure 7 The difference between the embodiment and embodiment 5 is that the frog sleeper 1 includes at least three solidified gravel composite unit blocks 2, and two of the solidified gravel composite unit blocks 2 are respectively located at the two ends of the frog sleeper 1.

[0061] The above detailed description of the specific embodiments of the present application has been given for the purpose of further explaining the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

[0062] It should be noted that in this paper, such as the term "includes", "contains" or any other variant thereof, is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, the term "connected" used in this paper can be directly connected or indirectly connected via other components without special description.

Claims

1. A vibration-damping assembled solidified track bed track structure suitable for use in a turnout area, comprising a switch sleeper (1), characterized in that, The frog tie (1) is located on the solidified gravel composite unit block (2); further comprising an adjusting layer (3) located on the bottom and / or top surface of the solidified gravel composite unit block (2); the frog tie (1) and / or the surrounding of the solidified gravel composite unit block (2) has ballast (4).

2. A vibration-damping assembled solidified track bed track structure suitable for use in a turnout area according to claim 1, characterized in that, Further comprising a damping pad (5) located at the bottom of the solidified gravel composite unit block (2).

3. The vibration-damping assembled solidified track bed rail structure suitable for turnout area according to claim 1, characterized in that, The bottom of the frog tie (1) is consolidated in the solidified gravel composite unit block (2).

4. The vibration-damping assembled solidified track bed rail structure suitable for turnout area according to claim 1, characterized in that, The top surface of the solidified gravel composite unit block (2) is provided with a mounting groove matched with the frog tie (1), and the bottom of the frog tie (1) is placed in the mounting groove.

5. The vibration-damping assembled solidified track bed rail structure suitable for turnout area according to claim 1, characterized in that, There is only one solidified gravel composite unit block (2) below the frog tie (1), and the length of the solidified gravel composite unit block (2) is greater than or equal to the length of the frog tie (1).

6. A vibration-damping assembled solidified track bed track structure suitable for use in a turnout area according to claim 5, characterized in that, The projection of the frog tie (1) on the plane where the top surface of the solidified gravel composite unit block (2) is located is completely located in the solidified gravel composite unit block (2).

7. The vibration-damping assembled solidified track bed rail structure suitable for turnout area according to claim 1, characterized in that, There are only two solidified gravel composite unit blocks (2) below the frog tie (1), and the two solidified gravel composite unit blocks (2) are respectively located at the two ends of the frog tie (1).

8. The vibration-damping assembled solidified track bed rail structure suitable for turnout area according to claim 1, characterized in that, The frog tie (1) includes at least three solidified gravel composite unit blocks (2) below, two of which are respectively located at the two ends of the frog tie (1).

9. A vibration-damping monolithic track structure for switch areas according to claim 7 or 8, characterized in that, Between the two adjacent solidified gravel composite unit blocks (2) below the frog tie (1), the ballast (4) is filled.

10. A vibration-damping assembled solidified track bed track structure suitable for use in a turnout area according to claim 7 or 8, characterized in that, A plurality of rails (6) are installed on the frog tie (1), and the bottom of any rail (6) has the solidified gravel composite unit block (2).

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