Dispersive compression-resistant railroad bed structure for railway construction

Abstract

The utility model discloses a disperse compression-resistant railway subgrade structure for railway construction, and belongs to the field of railway subgrade structures. The railway subgrade structure capable of dispersing and resisting pressure in railway construction comprises two fixed rails which are transversely arranged, the lower ends of the two fixed rails are connected through a rail pillow, and an upper soil layer is arranged at the lower end of the rail pillow. According to the novel railway subgrade structure, the problems that according to an existing novel railway subgrade structure, pressure is transmitted layer by layer, the pressure borne by the structure close to a positive rail is large, the structure around the positive rail is prone to being damaged, and the service life of the whole structure is shortened are solved; the cement layer can transmit weight and pressure downwards in the longitudinal direction, the force is transmitted and transmitted to the exterior of the pressure-resistant plate through the connecting strips, the dispersion area of the force can be increased through the combination of the pressure-resistant plate, the connecting strips and the cement layer, the force is dispersed at different horizontal positions, and dispersion pressure resistance is achieved.

Description

Technical Field

[0001] The utility model relates to the field of railway roadbed structures, in particular to a railway roadbed structure with dispersed compression resistance for railway construction. Background Art

[0002] Railway subgrade structures, as the indispensable cornerstone of the railway track system, are complex and sophisticated in design, ensuring the safety and smoothness of railway traffic. This structure not only bears the weight of trains but also withstands the test of the natural environment such as rain, frost, temperature changes, and geological activities. Therefore, its stability, durability, and adaptability are crucial. The subgrade structure is mainly composed of multiple layers, each of which plays a specific role.

[0003] A Chinese patent with publication number CN205804048U discloses a new structure for high-speed railway subgrade in saline soil areas, including a main track, sleepers, a sand and gravel layer, and a base. The provided barrier layer can prevent the rise of salt and salt swelling reaction. The depth of the base is 70 cm, which effectively prevents the problem of subsidence of the subgrade. The planted halophyte belt can absorb salt from the soil and reduce the salinity of the soil. The maintenance cost is relatively low, which greatly reduces safety hazards and avoids economic losses. It can allow trains to pass better and safely, promote the development of railway transportation, and bring greater convenience to people.

[0004] After the new railway roadbed structure of the above-mentioned patent is laid and put into use, the pressure generated by the passage of the upper train will be transmitted from the main track to the lower structure. The pressure is transmitted layer by layer, which can easily cause the structure close to the main track to be subjected to greater pressure, and the structure around the main track is easily damaged, thereby reducing the service life of the entire structure. Utility Model Content

[0005] The purpose of the present utility model is to provide a railway roadbed structure with dispersed compression resistance for railway construction. After the cement layer bears the weight and pressure, the cement layer will transmit the weight and pressure longitudinally downward, and transmit the force to the outside of the compression plate through the connecting strip. The combination of the compression plate, the connecting strip and the cement layer can increase the force dispersion area, and disperse the force at different horizontal positions to achieve dispersed compression resistance, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a railway roadbed structure with decentralized pressure resistance for railway construction, comprising a fixed track, wherein two fixed tracks are arranged transversely, and the lower ends of the two fixed tracks are connected by track sleepers, and an upper soil layer is provided at the lower end of the track sleeper, and a cement layer is provided at the lower end of the upper soil layer, and a connecting strip is provided extending in the middle of the lower end of the cement layer, and a pressure-resistant plate is provided at the lower end of the connecting strip, and second mounting grooves are provided on both sides of the lower end of the cement layer, and a first mounting groove is provided in an array at the lower end of the pressure-resistant plate.

[0007] Preferably, the compression-resistant plate, the connecting strip and the cement layer form an integrated structure.

[0008] Preferably, a sand and gravel layer is laid at the lower end of the exterior of the cement layer, a partition layer is laid between the lower end of the sand and gravel layer and the upper end of the compression plate, and a lower soil layer is provided at the lower end of the exterior of the compression plate.

[0009] Preferably, guardrails are longitudinally provided on both sides of the lower soil layer, and support ramps are paved obliquely on the outside of the guardrails.

[0010] Preferably, the upper end of one side of the guardrail is embedded in the interior of the support ramp and is provided with a second limiting frame, and the lower end of one side of the guardrail is embedded in the interior of the support ramp and is provided with a first limiting frame.

[0011] Preferably, a second shock-absorbing plate that fits the anti-compression plate is provided inside the first installation groove, and a first shock-absorbing plate that fits the cement layer is provided inside the second installation groove.

[0012] Preferably, the first shock-absorbing plate and the second shock-absorbing plate are made of high polymer polyurethane grouting board.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] When laying the railway roadbed structure, the utility model pre-casts a pressure-resistant plate, a connecting strip and an upper soil layer at the upper end of the lower soil layer. The pressure-resistant plate, the connecting strip and the upper soil layer are an integrated structure. When the fixed track is actually used and subjected to pressure, the pressure will be borne by the cement layer and the upper soil layer and sand and gravel layer laid around it in part, while the other part of the pressure will be transmitted to the pressure-resistant plate through the connecting strip, and further pressure will be borne by the isolation layer and the lower soil layer around the pressure-resistant plate, actively diverting the pressure, expanding the pressure contact area, and dispersing the pressure. In addition, a second mounting groove is recessed on both sides of the lower end of the cement layer, and a first mounting groove is recessed on both sides of the lower end of the second shock-absorbing plate. The recessed second mounting groove and the first mounting groove can respectively limit the adjacent sand and gravel layer and the lower soil layer, thereby avoiding deformation of the sand and gravel layer and the lower soil layer due to pressure, and avoiding overall collapse of the roadbed structure due to pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the overall external structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the positional relationship between the first shock-absorbing plate and the second shock-absorbing plate of the present invention;

[0017] Figure 3 For the utility model Figure 2 A partial enlarged view of area A in the middle;

[0018] Figure 4 For the utility model Figure 2 A partial enlarged view of area B in the middle;

[0019] Figure 5 This is an exploded view of the positional relationship between the second shock-absorbing plate and the first shock-absorbing plate of the present invention.

[0020] In the figure: 1. Fixed track; 2. Track sleeper; 3. Support ramp; 4. Guardrail; 5. First limiting frame; 6. Second limiting frame; 7. Cement layer; 8. Sand and gravel layer; 9. Partition layer; 10. Lower soil layer; 11. Connecting strip; 12. Compression plate; 13. First shock-absorbing plate; 14. Second shock-absorbing plate; 15. First mounting groove; 16. Second mounting groove; 17. Upper soil layer. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to specific embodiments.

[0022] Example 1

[0023] like Figure 1 and Figure 2 As shown, a railway subgrade structure with decentralized compression resistance for railway construction according to this embodiment includes two fixed rails 1 arranged transversely. The lower ends of the two fixed rails 1 are connected by a rail sleeper 2. An upper soil layer 17 is provided at the lower ends of the rail sleepers 2. The rail sleepers 2 support the upper fixed rails 1. At the same time, the upper soil layer 17 wraps and protects a lower cement layer 7 for shock absorption.

[0024] In order to improve the shock absorption effect and disperse the pressure on the fixed track 1, a cement layer 7 is provided at the lower end of the upper soil layer 17. A connecting strip 11 is provided in the middle of the lower end of the cement layer 7. A pressure-resistant plate 12 is provided at the lower end of the connecting strip 11. The pressure-resistant plate 12, the connecting strip 11 and the cement layer 7 are an integrated structure. The pressure at the contact position of the fixed track 1 will be transmitted to the pressure-resistant plate 12, the connecting strip 11 and the cement layer 7. The pressure dispersible area is expanded by the pressure-resistant plate 12, the connecting strip 11 and the cement layer 7, so that the pressure can be evenly dispersed, the pressure bearing capacity is improved, and the collapse of the railway subgrade structure caused by the pressure is avoided.

[0025] like Figure 3 、 Figure 4 and Figure 5As shown, in order to prevent the pressure from causing the anti-pressure plate 12, the connecting strip 11 and the cement layer 7 to shift in position and cause the railway subgrade structure to collapse, second mounting grooves 16 are provided on both sides of the lower end of the cement layer 7, and a first mounting groove 15 is provided in an array at the lower end of the anti-pressure plate 12. The lower soil layer 10 and the sand and gravel layer 8 are embedded in the recessed position through the recessed second mounting grooves 16 and the first mounting grooves 15, thereby preventing the pressure from causing the anti-pressure plate 12, the connecting strip 11 and the cement layer 7 to shift in position, thereby improving the stability of the railway subgrade structure during use:

[0026] In order to bear the pressure on the cement layer 7, Figure 2 and Figure 4 As shown, a sand and gravel layer 8 is laid on the lower end of the outside of the cement layer 7, and a partition layer 9 is laid between the lower end of the sand and gravel layer 8 and the upper end of the pressure-resistant plate 12. The pressure borne by the cement layer 7 will be distributed and transmitted to the sand and gravel layer 8 and the upper soil layer 17;

[0027] The lower end of the outer portion of the compression plate 12 is provided with a lower soil layer 10. The entire railway subgrade structure is erected on the upper end of the lower soil layer 10. During the erection process, the lower soil layer 10 is embedded in the first mounting groove 15 inside the compression plate 12. Similarly, the sand and gravel layer 8 is embedded in the second mounting groove 16 inside the cement layer 7. The cement layer 7 and the compression plate 12, which are embedded for transmission and support respectively, can improve the overall stability of the railway subgrade structure.

[0028] In order to prevent the lower soil layer 10, the isolation layer 9, the sand and gravel layer 8 and the upper soil layer 17 from scattering to both sides, and to facilitate the maintenance of the maintenance personnel, as shown in FIG. Figure 1 and Figure 2 As shown, guardrails 4 are longitudinally arranged on both sides of the lower soil layer 10, and support ramps 3 are paved obliquely on the outside of the guardrails 4. The guardrails 4 support the lower soil layer 10, the barrier layer 9, the sand and gravel layer 8 and the upper soil layer 17 to prevent the railway subgrade structure from falling apart and collapsing.

[0029] like Figure 1 As shown, the upper end of one side of the guardrail 4 is embedded in the support ramp 3 and is provided with a second limiting frame 6, and the lower end of one side of the guardrail 4 is embedded in the support ramp 3 and is provided with a first limiting frame 5. The second limiting frame 6 restricts the support ramp 3 to prevent the support ramp 3 from spreading to both sides due to environmental factors during daily use, thereby preventing the guardrail 4, the first limiting frame 5 and the second limiting frame 6 from being exposed, thereby improving the stability of the railway roadbed structure during use;

[0030] In order to prevent the shaking caused by pressure from causing the loosening of the upper soil layer 17, sand and gravel layer 8, isolation layer 9 and lower soil layer 10, a second shock-absorbing plate 14 is provided in the first installation groove 15 to fit the pressure-resistant plate 12, and a first shock-absorbing plate 13 is provided in the second installation groove 16 to fit the cement layer 7. Figure 2 、 Figure 3 and Figure 4 As shown, the first shock-absorbing plate 13 and the second shock-absorbing plate 14 are made of polymer polyurethane grouting plates. Through the support and wrapping of the first shock-absorbing plate 13 and the second shock-absorbing plate 14, the vibration caused by pressure can be buffered, thereby improving the stability of the railway roadbed structure.

[0031] Working principle: When laying the railway roadbed structure, the lower soil layer 10 is excavated and laid in advance, and a pressure-resistant plate 12, a connecting strip 11 and a cement layer 7 are cast on the upper end of the lower soil layer 10. The first mounting groove 15 inside the pressure-resistant plate 12 is embedded in the upper end of the lower soil layer 10, and a second shock-absorbing plate 14 is padded inside the first mounting groove 15. A partition layer 9 is laid outside the connecting strip 11, and a sand and gravel layer 8 is laid between the upper end of the partition layer 9 and the lower end of the cement layer 7. The first shock-absorbing plate 13 is inserted between the sand and gravel layer 8 and the cement layer 7, so that the first shock-absorbing plate 13 is located in the second mounting groove 16 recessed inside the cement layer 7. Subsequently, an upper soil layer 17, a track sleeper 2 and a fixed track are laid layer by layer on the upper end of the cement layer 7. 1. Finally, guardrails 4 are longitudinally erected on both sides of the track sleeper 2, and supporting ramps 3 are filled on the outside of the guardrails 4. The guardrails 4 are wrapped and protected by the supporting ramps 3. After the weight of the vehicle is borne at the fixed track 1 position, the pressure will first be transmitted to the cement layer 7. The cement layer 7 bears part of the pressure, and part of the pressure is dispersed and resisted by the surrounding upper soil layer 17 and sand and gravel layer 8. The other part of the pressure will be transmitted to the compression plate 12 through the connecting strip 11. The pressure will be borne and dispersed by the surrounding isolation layer 9 and lower soil layer 10. The vibration caused by the vibration will contact the first shock-absorbing plate 13 and the second shock-absorbing plate 14 respectively, and the vibration caused by the pressure will be buffered by the first shock-absorbing plate 13 and the second shock-absorbing plate 14.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A railway subgrade structure with dispersed compression resistance for railway construction, comprising a fixed track (1), wherein two fixed tracks (1) are arranged transversely, the lower ends of the two fixed tracks (1) are connected by a track sleeper (2), and the lower ends of the track sleepers (2) are provided with an upper soil layer (17), characterized in that: A cement layer (7) is provided at the lower end of the upper soil layer (17), a connecting strip (11) is provided in the middle of the lower end of the cement layer (7), a pressure-resistant plate (12) is provided at the lower end of the connecting strip (11), second mounting grooves (16) are provided on both sides of the lower end of the cement layer (7), and a first mounting groove (15) is provided in an array at the lower end of the pressure-resistant plate (12).

2. The railway roadbed structure with dispersed compression resistance for railway construction according to claim 1, characterized in that: The anti-compression plate (12), the connecting strip (11) and the cement layer (7) form an integrated structure.

3. The railway roadbed structure with dispersed compression resistance for railway construction according to claim 1, characterized in that: A sand and stone layer (8) is laid at the lower end of the exterior of the cement layer (7), a partition layer (9) is laid between the lower end of the sand and stone layer (8) and the upper end of the pressure-resistant plate (12), and a lower soil layer (10) is provided at the lower end of the exterior of the pressure-resistant plate (12).

4. The railway roadbed structure with dispersed compression resistance for railway construction according to claim 3, characterized in that: Guardrails (4) are longitudinally arranged on both sides of the lower soil layer (10), and support ramps (3) are obliquely laid on the outside of the guardrails (4).

5. The railway roadbed structure with dispersed compression resistance for railway construction according to claim 4, characterized in that: The upper end of one side of the guardrail (4) is embedded in the interior of the support ramp (3) and is provided with a second limiting frame (6), and the lower end of one side of the guardrail (4) is embedded in the interior of the support ramp (3) and is provided with a first limiting frame (5).

6. The railway roadbed structure with dispersed compression resistance for railway construction according to claim 1, characterized in that: A second shock-absorbing plate (14) in contact with the anti-pressure plate (12) is provided inside the first installation groove (15), and a first shock-absorbing plate (13) in contact with the cement layer (7) is provided inside the second installation groove (16).

7. The railway subgrade structure with dispersed compression resistance for railway construction according to claim 6, characterized in that: The first damping plate (13) and the second damping plate (14) are made of high polymer polyurethane grouting plates.

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