Railway improved soil roadbed structure

Abstract

The utility model relates to the technical field of engineering construction, in particular to a railway improved soil roadbed structure which comprises a ground, steel bar columns arranged side by side are connected to the top of the ground in an embedded mode, concrete is poured on the top of the ground, and the concrete is poured on the outer surfaces of the steel bar columns. The cement layer is arranged at the top of the concrete, a loose soil layer is arranged at the top of the cement layer, a gravel layer is arranged at the top of the loose soil layer, and fixing plates are fixedly installed on the two sides of the top of the cement layer. The soil loosening layer, the gravel layer, the fixing plate and the groove are arranged, the fixing plate reduces the probability of water and soil loss of the soil loosening layer, guides the flow direction of rainwater, prevents the rainwater from permeating into the bottom layer of the soil roadbed and improves the stability of the soil roadbed, in addition, the connecting pipe and the sealing sleeve are arranged, the freezing point of the soil is reduced, the soil is maintained, and the service life of the soil roadbed is prolonged. And the durability of the soil roadbed is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction, in particular to an improved earth roadbed structure for a railway. Background Art

[0002] The railway subgrade is a structure that bears and transmits the gravity of the track and the dynamic effects of the train. It is the foundation of the track and an important building to ensure the operation of the train.

[0003] Patent document CN214992706U discloses a railway soft soil roadbed, "including a base, the base is installed on the ground, a placement groove is provided on the base, cloth bags are stacked in the placement groove, the cloth bags are filled with soft soil dug out from the placement groove, the top of the cloth bags is flush with the base, a cement layer is poured on the top of the base, sleepers are evenly arranged along the length direction of the base on the side of the cement layer away from the base, and steel rails are installed on the sleepers. The present application has the effect of digging out the soft soil in the base, bagging it and then backfilling it. The bag body can contain soft soil to reduce the probability of land loss, thereby ensuring the normal passage of vehicles.".

[0004] However, in the above scheme, sleepers and rails are installed on the cement layer to complete the installation of the soft soil roadbed of the railway, but cement is prone to frost heave, cracking, water seepage and other phenomena, and high-speed railways run at a high speed, which places strict requirements on the deformation of the soil roadbed. Frost heave affects the smoothness of the soil roadbed, cracking and water seepage affect the stability and durability of the soil roadbed, and is prone to further deep damage. Utility Model Content

[0005] The utility model aims to overcome the problems of the existing railway improved soil roadbed structure in which the soil roadbed is prone to frost heave, cracking, water seepage and water permeability during use, thereby providing a railway improved soil roadbed structure;

[0006] To achieve the above purpose, the utility model provides the following technical solution: a railway improved soil roadbed structure, comprising:

[0007] A ground, wherein the top of the ground is connected with steel bars arranged side by side, and the top of the ground is poured with concrete, and the concrete is poured on the outer surface of the steel bars;

[0008] A cement layer, wherein the cement layer is arranged on the top of the concrete, a loose soil layer is arranged on the top of the cement layer, a sand and gravel layer is arranged on the top of the loose soil layer, and fixing plates are fixedly installed on both sides of the top of the cement layer, and one side of the fixing plate is overlapped with one side of the loose soil layer;

[0009] A groove is provided on one side of the fixed plate, and slope protection is arranged on both sides of the top of the ground, and one side of the slope protection is fixedly connected to one side of the concrete.

[0010] As an optional technical solution, a connecting pipe is connected to the opposite sides of the two slope protections, and the bottom end of the connecting pipe is inserted into the inner wall of the loose soil layer. The top end of the connecting pipe is threadedly connected to a sealing sleeve, and the outer surface of the sealing sleeve overlaps one side of the slope protection.

[0011] As an optional technical solution, the inner wall of the slope protection is provided with a fixing block, and one side of the slope protection is provided with planting grooves arranged side by side.

[0012] As an optional technical solution, a fixing column is fixedly installed on the bottom of the fixing block, and the outer surface of the fixing column is fixedly connected to the inner wall of the ground.

[0013] As an optional technical solution, a sleeper is arranged on the top of the cement layer, and a sand and gravel layer is arranged on both sides of the sleeper.

[0014] As an optional technical solution, a steel rail is fixedly installed on the top of the sleeper, and the train is slidably connected to the top of the steel rail.

[0015] As an optional technical solution, the fixing plate is configured as a Y-shaped block, and one side of the fixing plate is parallel to one side of the sand and gravel layer.

[0016] The technical solution provided by the utility model has the following technical effects:

[0017] 1. The improved earth roadbed structure of the railway provided by the utility model comprises a ground, a cement layer and a groove, wherein the top of the ground is connected with steel bars arranged side by side, the top of the ground is poured with concrete, and the concrete is poured on the outer surface of the steel bars, the cement layer is arranged on the top of the concrete, the top of the cement layer is provided with a loose soil layer, the top of the loose soil layer is provided with a sand and gravel layer, both sides of the top of the cement layer are fixedly installed with fixed plates, and one side of the fixed plate is overlapped with one side of the loose soil layer, the groove is opened on one side of the fixed plate, both sides of the top of the ground are provided with slope protection, and one side of the slope protection is fixedly connected with one side of the concrete;

[0018] Through the use of loose soil layer, gravel layer, fixed plate and groove, the loose soil pores in the loose soil layer reduce the thermal conductivity of the soil, improve the anti-freeze effect of the earth roadbed, reduce the probability of frost heave and cracking of the earth roadbed, and ensure the smoothness of the earth roadbed. The loose soil layer is then stabilized by the fixed plate to reduce the probability of soil and water loss in the loose soil layer. At the same time, the gravel layer is used to facilitate drainage. Rainwater flows to the fixed plate, which guides the water to flow from the groove into the slope protection, preventing rainwater from seeping into the bottom layer of the earth roadbed and preventing soil frost heave from affecting the stability of the earth roadbed, making the earth roadbed more durable.

[0019] 2. The improved earth roadbed structure for railway provided by the utility model comprises a slope protection, a connecting pipe and a sealing sleeve, wherein the two opposite sides of the two slope protections are connected through the connecting pipe, and the bottom end of the connecting pipe is inserted into the inner wall of the loose soil layer, the top end of the connecting pipe is threadedly connected with the sealing sleeve, and the outer surface of the sealing sleeve overlaps one side of the slope protection;

[0020] By using the connecting pipe and the sealing sleeve together, it is convenient to add salt solution into the loose soil. The low freezing point of the salt water is used to lower the freezing point of the loose soil, thereby reducing the probability of soil freezing. The soil can be maintained, the characteristics of the loose soil are protected, and the durability of the earth roadbed is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the fixed plate structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the connecting pipe structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the fixed block structure of the utility model;

[0025] In the figure: 1. Ground; 2. Reinforced concrete column; 3. Concrete; 4. Cement layer; 5. Loose soil layer; 6. Sand and gravel layer; 7. Fixed plate; 8. Groove; 9. Slope protection; 10. Connecting pipe; 11. Sealing sleeve; 12. Fixed block; 13. Planting trough; 14. Fixed column; 15. Sleeper; 16. Rail. DETAILED DESCRIPTION

[0026] Reference Figures 1 to 3 The utility model provides an embodiment: a railway improved soil roadbed structure, comprising a ground 1, the top of the ground 1 is embedded and connected with steel bars 2 arranged side by side, the top of the ground 1 is poured with concrete 3, and the concrete 3 is poured on the outer surface of the steel bars 2, a cement layer 4, the cement layer 4 is arranged on the top of the concrete 3, a loose soil layer 5 is arranged on the top of the cement layer 4, a sand and gravel layer 6 is arranged on the top of the loose soil layer 5, a fixing plate 7 is fixedly installed on both sides of the top of the cement layer 4, and one side of the fixing plate 7 is overlapped on one side of the loose soil layer 5, a groove 8, the groove 8 is opened on one side of the fixing plate 7, both sides of the top of the ground 1 are provided with slope protection 9, and one side of the slope protection 9 is fixedly connected to one side of the concrete 3, the fixing plate 7 is arranged as a Y-shaped block, and one side of the fixing plate 7 is parallel to one side of the sand and gravel layer 6;

[0027] By setting the steel column 2 and the concrete 3, the strength of the earth roadbed can be increased, and the steel column 2 is deeply buried in the ground, which improves the firmness of the earth roadbed. Then, the loose soil layer 5 is set by the soil loosening anti-freezing method, and the pores in the loose soil are used to reduce the thermal conductivity of the soil, so as to achieve the purpose of anti-freezing. The gravel layer 6 is set to facilitate drainage, which can better fix the sleepers 15 and the rails 16, and disperse the weight of the rails and the train to the position on the roadbed, reduce vibration and noise, and improve riding comfort. The slope protection 9 is set to increase the structural strength of the earth roadbed. By setting the fixing plate 7, the soil and water loss of the loose soil layer 5 can be reduced, and the combination with the groove 8 can guide and discharge the water discharged from the gravel layer 6, effectively protecting the bottom layer of the earth roadbed from rainwater infiltration. Without rainwater infiltration, the earth roadbed is not affected by frost heave in winter, thereby ensuring the stability and durability of the earth roadbed.

[0028] Reference Figure 1 and Figure 3 , the two opposite sides of the slope protection 9 are penetrated by a connecting pipe 10, and the bottom end of the connecting pipe 10 is inserted into the inner wall of the loose soil layer 5, the top end of the connecting pipe 10 is threadedly connected with a sealing sleeve 11, and the outer surface of the sealing sleeve 11 overlaps one side of the slope protection 9;

[0029] By using the connecting pipe 10 and the sealing sleeve 11 together, the sealing sleeve 11 is taken out, and the salt solution is conveniently added from the inlet of the connecting pipe 10 and injected into the loose soil. The low freezing point of the salt water is used to lower the freezing point of the loose soil, making the soil less likely to freeze. The soil can be protected and prevented from freezing and cracking, which affects the use of the railway earth roadbed, thereby increasing the service life of the earth roadbed.

[0030] Reference Figure 2 and Figure 4 The inner wall of the slope protection 9 is provided with a fixing block 12, and a planting groove 13 arranged side by side is opened on one side of the slope protection 9. A fixing column 14 is fixedly installed at the bottom of the fixing block 12, and the outer surface of the fixing column 14 is fixedly connected to the inner wall of the ground 1;

[0031] By using the fixing block 12 and the fixing column 14 together, the slope protection 9 is made more solid, the stability of the slope protection 9 is improved, and the earth roadbed is stabilized. By planting the planting groove 13, planting appropriate plants or vegetation can stabilize the slope protection 9 and reduce soil erosion.

[0032] Reference Figure 1 and Figure 3 A sleeper 15 is arranged on the top of the cement layer 4, and a gravel layer 6 is arranged on both sides of the sleeper 15. A steel rail 16 is fixedly installed on the top of the sleeper 15, and the train is slidably connected to the top of the steel rail 16;

[0033] The bottom of the rail 16 is directly supported on the top surface of the sleeper 15. The sleeper 15 supports the rail 16 and keeps the position of the rail 16. The train or high-speed railway runs on the rail 16.

[0034] Working principle: through the use of loose soil layer 5, gravel layer 6, fixing plate 7 and groove 8, the pores in the loose soil are used to reduce the thermal conductivity of the soil to achieve the anti-freeze function. The gravel layer 6 is convenient for drainage, and the fixing plate 7 enhances the structural strength of the loose soil layer 5, reduces the probability of soil and water loss in the loose soil layer 5, and can guide the water discharged from the gravel layer 6 to flow from the groove 8 to the slope protection 9, avoiding rainwater infiltration into the bottom layer of the earth roadbed, reducing the probability of soil frost heave, ensuring the stability of the earth roadbed, and improving the durability of the earth roadbed. In addition, through the use of connecting pipe 10 and sealing sleeve 11, it is convenient to add salt solution to the loose soil, and use the low freezing point of salt water to reduce the freezing point of the loose soil, so that the soil is not easy to freeze, thereby maintaining the soil and making the earth roadbed more durable.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A railway improved soil roadbed structure, comprising: The ground (1) is characterized in that: the top of the ground (1) is embedded and connected with steel bars (2) arranged side by side, the top of the ground (1) is poured with concrete (3), and the concrete (3) is poured on the outer surface of the steel bars (2); A cement layer (4), the cement layer (4) being arranged on top of the concrete (3), a loose soil layer (5) being arranged on top of the cement layer (4), a sand and gravel layer (6) being arranged on top of the loose soil layer (5), and fixing plates (7) being fixedly installed on both sides of the top of the cement layer (4), and one side of the fixing plate (7) being overlapped with one side of the loose soil layer (5); A groove (8) is provided on one side of the fixing plate (7), and slope protection (9) is provided on both sides of the top of the ground (1), and one side of the slope protection (9) is fixedly connected to one side of the concrete (3).

2. The improved earth roadbed structure for railway according to claim 1, characterized in that: A connecting pipe (10) is connected through the opposite sides of the two slope protections (9), and the bottom end of the connecting pipe (10) is inserted into the inner wall of the loose soil layer (5). The top end of the connecting pipe (10) is threadedly connected to a sealing sleeve (11), and the outer surface of the sealing sleeve (11) overlaps one side of the slope protection (9).

3. The improved earth roadbed structure for railway according to claim 1, characterized in that: The inner wall of the slope protection (9) is provided with a fixing block (12), and one side of the slope protection (9) is provided with planting grooves (13) arranged side by side.

4. The improved earth roadbed structure for railway according to claim 3, characterized in that: A fixing column (14) is fixedly mounted on the bottom of the fixing block (12), and the outer surface of the fixing column (14) is fixedly connected to the inner wall of the ground (1).

5. The improved earth roadbed structure for railway according to claim 1, characterized in that: A sleeper (15) is arranged on the top of the cement layer (4), and gravel layers (6) are arranged on both sides of the sleeper (15).

6. The improved earth roadbed structure for railway according to claim 5, characterized in that: A steel rail (16) is fixedly mounted on the top of the sleeper (15), and the train is slidably connected to the top of the steel rail (16).

7. The improved earth roadbed structure for railway according to claim 1, characterized in that: The fixing plate (7) is configured as a Y-shaped block, and one side of the fixing plate (7) is parallel to one side of the sandstone layer (6).

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