Highway roadbed structure capable of preventing roadbed softening

Abstract

The invention discloses an expressway subgrade structure capable of preventing subgrade softening, and relates to the technical field of expressways, the expressway subgrade structure comprises a base body, the base body comprises a rammed earth layer, a bedding layer, a water stabilizing layer, a concrete layer and an asphalt layer, the rammed earth layer, the bedding layer, the water stabilizing layer, the concrete layer and the asphalt layer are sequentially arranged from bottom to top, the bedding layer is laid on the top of the rammed earth layer, and the water stabilizing layer is laid on the top of the asphalt layer. And the bedding layer is matched with the rammed earth layer. According to the invention, the water filtering property of the roadbed is improved through the bedding layer and the water stabilizing layer, and then the collected accumulated water is discharged through the water collecting tank and the water collecting pipe, so that the drainage speed in the soil base layer is increased, the viscosity loss caused by excessive water in the soil layer is avoided, and the soil and the accumulated water can be quickly separated in rainy seasons; therefore, the highway roadbed softening problem is prevented, the highway is prevented from having problems, the blocking net in the water catchment groove blocks soil flowing down along with accumulated water, and the situation that drainage is affected due to the fact that the soil enters a pipeline and the pipeline is blocked is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of expressways, in particular to an expressway roadbed structure capable of preventing roadbed softening. Background Art

[0002] Expressway, referred to as expressway, refers to a multi-lane road that is specially used for vehicles to travel in different directions and lanes, with full access control. It is a high-grade road. Expressway is the highest level in the technical level of roads, and has an intersecting relationship with national roads or provincial roads under the road network status level classification. Its main features are: dedicated to cars, limited speed, fully enclosed, fast speed, single vehicle flow, large traffic capacity, dedicated to direct traffic services, with complete modern traffic management and traffic safety facilities, no time limit, and can drive all day and night.

[0003] The roadbed is the most important component of a highway. The quality of the roadbed directly determines whether the highway can operate normally. Due to the large traffic volume on the highway, the force it bears is much greater than that of ordinary roads. As the highway serves a certain period of time, the roadbed will cause water seepage inside the roadbed, reducing the hardness of the roadbed, thereby causing the roadbed to soften and reduce the structural strength of the highway roadbed. The gravel layer in the roadbed is prone to collapse, which can easily cause the roadbed flatness to decrease. In addition, the road surface on both sides of the roadbed is usually exposed. After being washed by rain for a long time, the soil on the side of the roadbed is continuously lost, making it impossible for the side of the roadbed to support the roadbed, which can easily cause the roadbed to collapse.

[0004] Therefore, a highway roadbed structure that can prevent roadbed softening is proposed to solve the above-mentioned problem. Summary of the invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a highway roadbed structure that can prevent roadbed softening.

[0006] The highway subgrade structure capable of preventing subgrade softening proposed by the present invention comprises a substrate, wherein the substrate comprises a rammed earth layer, a cushion layer, a water-stable layer, a concrete layer and an asphalt layer, wherein the rammed earth layer, the cushion layer, the water-stable layer, the concrete layer and the asphalt layer are arranged in sequence from bottom to top, a cushion layer is laid on the top of the rammed earth layer, the cushion layer is matched with the rammed earth layer, a water-stable layer is laid on the top of the cushion layer, the water-stable layer is matched with the cushion layer, a concrete layer is laid on the top of the water-stable layer, an asphalt layer is laid on the top of the concrete layer, the thickness of the rammed earth layer, the cushion layer and the water-stable layer is greater than that of the concrete layer and the asphalt layer, a water collecting pipe is transversely arranged inside the rammed earth layer, a water collecting trough distributed at equal distances is arranged on the top of the water collecting pipe, the water collecting trough is matched with the water collecting pipe, and a drainage pipe penetrating the substrate is arranged on one side of the water collecting pipe.

[0007] Preferably, the water collection trough includes a guard plate, which is circular. The outer wall of the bottom of the guard plate is provided with support rods arranged in a circle with equal distances. The outer wall of the support rod is provided with a fixing ring, and the diameter of the fixing ring is the same as the diameter of the guard plate. A barrier net is provided at the bottom of the water collection trough, and the barrier net is adapted to the fixing ring.

[0008] Preferably, a slope protection is provided on the outer wall of the base, the slope protection is inclined, the slope protection is matched with the base, a base plate is provided at the bottom of the slope protection, the base plate is matched with the slope protection, a drainage channel is opened on the top of the base plate, and the drainage pipe leads to the inside of the drainage channel.

[0009] Preferably, the outer wall of the slope protection is provided with planting troughs distributed at equal distances, and vertically arranged drainage ditches are provided between the planting troughs, and the drainage ditches are adapted to the planting troughs. The outer wall of the slope protection is provided with drainage ditches distributed at equal distances, and the drainage ditches are located between the planting troughs. A water collection slope leading to the drainage channel is provided at the bottom of the slope protection, and the drainage ditches and drainage ditches are adapted to the water collection slope.

[0010] Preferably, support columns are arranged equidistantly inside the cushion layer, fixing bolts are arranged at both ends of the outer wall at the bottom of the support columns, and a support plate is arranged on the top of the support column, and the support plate is located on the top of the cushion layer.

[0011] Preferably, the outer wall at the top of the support plate is provided with leakage holes distributed at equal distances, and the top of the support plate is provided with buffer components distributed at equal distances, the buffer components are located inside the water-stable layer, and the buffer components are adapted to the water-stable layer.

[0012] Preferably, the buffer assembly includes a buffer groove fixed at an equal distance on the top of the support plate, a buffer rod is slidably installed on the inner wall of the buffer groove, a buffer spring is arranged on the inner wall of the buffer groove, the end of the buffer spring is connected to the buffer rod, and the buffer spring is provided with a damper adapted thereto.

[0013] Preferably, a buffer plate is provided on the outer wall of the top of the buffer rod, the buffer plate is provided with drainage holes distributed at equal distances, and the buffer plate is adapted to the buffer rod.

[0014] Preferably, transverse reinforcing ribs and vertical reinforcing ribs with equal distances are arranged inside the buffer plate and inside the support plate, and the transverse reinforcing ribs and vertical reinforcing ribs are respectively matched with the support plate and the buffer plate.

[0015] Preferably, the paving layer comprises crushed stone, aggregate, and gravel, and the water-stabilizing layer comprises graded crushed stone aggregate, cement, and mixed materials.

[0016] The beneficial effects of the present invention are:

[0017] 1. The rammed earth layer enhances the solidity of the roadbed. The compacted soil layer can bear stronger pressure, and the roadbed is not easy to deform. The bedding layer and the water-stabilizing layer combine the road surface and the roadbed, so that the roadbed can meet the bearing load. At the same time, it improves the water filtration of the roadbed, reduces the problem of reduced bearing capacity caused by water accumulation in the roadbed, and prevents the softening of the roadbed. Finally, the concrete layer and the asphalt layer increase the strength of the roadbed. When the base is working, rainwater gradually penetrates into the rammed earth layer through the water-stabilizing layer and the bedding layer. The accumulated water gradually gathers into the water collection pipe through the water collection trough in the rammed earth layer, and finally drains out through the drainage. Compared with the traditional roadbed, the water filterability of the roadbed is improved by the paving layer and the water-stabilizing layer, and the accumulated water is discharged through the water collection trough and the water collection pipe, which speeds up the drainage of the soil base layer and prevents the soil layer from losing its viscosity due to excessive moisture. In the rainy season, the soil and the accumulated water can be quickly separated, thereby preventing and controlling the softening of the highway roadbed and avoiding problems on the highway. The barrier net in the water collection trough will block the soil flowing down with the accumulated water to prevent the soil from entering the pipe and causing pipe blockage, thereby affecting drainage;

[0018] 2. The edge of the roadbed is protected by setting up slope protection on the surface of the roadbed. Plants can be planted in the planting troughs, and the plant roots penetrate into the soil to consolidate the soil. The slope protection and the planting troughs work together to make the soil at the edge of the roadbed more stable and less likely to cause landslides due to rain erosion. When the rainfall is too heavy or too timely, the drainage ditch and the drainage ditch quickly collect the rainwater into the drainage channel for drainage, preventing the rainwater from eroding the slope protection and preventing the roadbed from softening due to rain erosion;

[0019] 3. The support column is combined with the support plate to improve the bearing capacity of the paving layer, and the roadbed is not easy to deform. The buffer spring and the buffer plate cooperate with each other to provide buffering protection for the roadbed in daily life, enhance the buffering force of the road surface, and prevent the roadbed from being deformed due to long-term excessive pressure. The transverse and vertical reinforcement ribs enhance the strength of the support plate and buffer plate, making the support plate and buffer plate not easy to break and deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main appearance structure of the highway roadbed structure that can prevent roadbed softening proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the highway subgrade structure that can prevent subgrade softening proposed by the present invention;

[0022] Figure 3 A schematic diagram of the structure of the buffer assembly of the highway roadbed structure that can prevent roadbed softening proposed by the present invention;

[0023] Figure 4 A schematic diagram of the support column structure of the highway roadbed structure capable of preventing roadbed softening proposed by the present invention;

[0024] Figure 5 A schematic diagram of a water collection trough structure of a highway roadbed structure capable of preventing roadbed softening proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the buffer plate structure of the highway roadbed structure that can prevent roadbed softening proposed by the present invention.

[0026] In the figure: 1. base; 2. rammed earth layer; 3. cushion layer; 4. water-stabilizing layer; 5. concrete layer; 6. asphalt layer; 7. water collecting pipe; 8. water collecting trough; 9. drainage pipe; 10. guard plate; 11. support rod; 12. fixing ring; 13. barrier net; 14. slope protection; 15. bottom plate; 16. drainage channel; 17. planting trough; 18. drainage ditch; 19. drainage ditch; 20. support column; 21. fixing bolt; 22. support plate; 23. leakage hole; 24. buffer groove; 25. buffer rod; 26. buffer spring; 27. buffer plate; 28. drainage hole; 29. ​​transverse reinforcement rib; 30. vertical reinforcement rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example, see Figure 1-6 A highway subgrade structure capable of preventing subgrade softening comprises a base 1, wherein the base 1 comprises a rammed earth layer 2, a cushion layer 3, a water-stable layer 4, a concrete layer 5, and an asphalt layer 6, wherein the rammed earth layer 2, the cushion layer 3, the water-stable layer 4, the concrete layer 5, and the asphalt layer 6 are arranged in sequence from bottom to top, the cushion layer 3 is laid on the top of the rammed earth layer 2, the cushion layer 3 is adapted to the rammed earth layer 2, the water-stable layer 4 is laid on the top of the cushion layer 3, the water-stable layer 4 is adapted to the cushion layer 3, the concrete layer 5 is laid on the top of the water-stable layer 4, and the asphalt layer 6 is laid on the top of the concrete layer 5, the thickness of the rammed earth layer 2, the cushion layer 3, and the water-stable layer 4 is greater than the thickness of the concrete layer 5 and the asphalt layer 6, and the cushion layer 3 includes a plurality of cushion layers. The rammed earth layer 2 includes crushed stone, aggregate, and gravel. The water-stabilizing layer 4 includes graded crushed stone aggregate, cement, and mixed materials. A water collecting pipe 7 is horizontally arranged inside the rammed earth layer 2. The top of the water collecting pipe 7 is provided with water collecting troughs 8 distributed at equal distances. The water collecting troughs 8 are adapted to the water collecting pipe 7. A drainage pipe 9 penetrating the base 1 is arranged on one side of the water collecting pipe 7. The water collecting trough 8 includes a guard plate 10. The guard plate 10 is circular. The outer wall of the bottom of the guard plate 10 is provided with support rods 11 arranged in a circular shape at equal distances. The outer wall of the support rod 11 is provided with a fixing ring 12. The diameter of the fixing ring 12 is the same as that of the guard plate 10. A barrier net 13 is provided at the bottom of the water collecting trough 8, and the barrier net 13 is adapted to the fixing ring 12.

[0029] By means of the above mechanism: the rammed earth layer 2 in the base 1 enhances the solidity of the roadbed, the compacted soil layer can bear stronger pressure, the roadbed is not easy to deform, the cushion layer 3 and the water-stabilizing layer 4 combine the road surface and the roadbed, so that the roadbed can meet the bearing load, and at the same time improve the water filtration of the roadbed, reduce the problem of reduced bearing capacity caused by water accumulation in the roadbed, and prevent the roadbed from softening. Finally, the concrete layer 5 and the asphalt layer 6 improve the strength of the roadbed. When the base 1 is working, rainwater gradually penetrates into the rammed earth layer 2 through the water-stabilizing layer 4 and the cushion layer 3, and the accumulated water gradually gathers into the water collection pipe 7 through the water collection trough 8 in the rammed earth layer 2. , and finally discharged through the drainage pipe 9. Compared with the traditional roadbed, the water filterability of the roadbed is improved by the paving layer 3 and the water-stabilizing layer 4, and the collected accumulated water is discharged through the water collection trough 8 and the water collecting pipe 7, so that the drainage speed inside the soil base is increased to prevent the soil layer from losing viscosity due to excessive moisture. In the rainy season, the soil and accumulated water can be quickly separated, thereby preventing and controlling the softening problem of the highway roadbed and avoiding problems with the highway. The barrier net 13 in the water collection trough 8 will block the soil flowing down with the accumulated water to prevent the soil from entering the pipeline and causing pipeline blockage, thereby affecting drainage.

[0030] As a preferred implementation of this embodiment, the outer wall of the base 1 is provided with a slope protection 14, the slope protection 14 is inclined, the slope protection 14 is adapted to the base 1, a bottom plate 15 is provided at the bottom of the slope protection 14, the bottom plate 15 is adapted to the slope protection 14, a drainage channel 16 is opened on the top of the bottom plate 15, the drainage pipe 9 leads to the inside of the drainage channel 16, the outer wall of the slope protection 14 is provided with planting grooves 17 distributed at equal distances, and vertically arranged drainage grooves 18 are provided between the planting grooves 17, and the drainage grooves 18 are adapted to the planting grooves 17. The outer wall of the slope protection 14 is provided with drainage grooves 19 distributed at equal distances, and the drainage grooves 19 are located between the planting grooves 17. A drainage slope leading to the drainage channel 16 is provided at the bottom of the slope 14, and the drainage ditch 18 and the drainage ditch 19 are both adapted to the drainage slope. The edge of the roadbed is protected by providing a slope protection 14 on the roadbed surface. Plants can be planted in the planting troughs 17, and the plant roots penetrate into the soil to consolidate the soil. The slope protection 14 and the planting troughs 17 cooperate with each other to make the soil at the edge of the roadbed more stable and less prone to landslides due to rain erosion. When the rainfall is too heavy or the rain is too timely, the drainage ditch 18 and the drainage ditch 19 quickly collect the rainwater into the drainage channel 16 for drainage, thereby preventing the rainwater from eroding the slope protection 14 and preventing the roadbed from softening due to rain erosion.

[0031] As a preferred implementation mode of this embodiment, support columns 20 are arranged at equal distances inside the cushion layer 3, fixing bolts 21 are arranged at both ends of the bottom outer wall of the support column 20, and a support plate 22 is arranged on the top of the support column 20. The support plate 22 is located on the top of the cushion layer 3. The support column 20 is combined with the support plate 22 to improve the bearing capacity of the cushion layer 3, and the roadbed is not easily deformed.

[0032] As a preferred implementation mode of this embodiment, the top outer wall of the support plate 22 is provided with leakage holes 23 distributed at equal distances, and the top of the support plate 22 is provided with a buffer component distributed at equal distances. The buffer component is located inside the water-stable layer 4, and the buffer component is adapted to the water-stable layer 4. The buffer component includes a buffer groove 24 fixed at equal distances on the top of the support plate 22, and a buffer rod 25 is slidably installed on the inner wall of the buffer groove 24. A buffer spring 26 is provided on the inner wall of the buffer groove 24. The end of the buffer spring 26 is connected to the buffer rod 25, and the buffer spring 26 is provided with a damper adapted thereto. A buffer plate 27 is provided on the top outer wall of the buffer rod 25. The buffer plate 27 is provided with drainage holes 28 distributed at equal distances, and the buffer plate 27 is adapted to the buffer rod 25. The buffer spring 26 and the buffer plate 27 cooperate with each other to provide buffer protection for the roadbed in daily life, enhance the buffering force of the road surface, and prevent the roadbed from being deformed due to long-term excessive pressure.

[0033] As a preferred implementation manner of this embodiment, equidistant transverse reinforcing ribs 29 and vertical reinforcing ribs 30 are provided inside the buffer plate 27 and the support plate 22. The transverse reinforcing ribs 29 and the vertical reinforcing ribs 30 are respectively matched with the support plate 22 and the buffer plate 27. The transverse reinforcing ribs 29 and the vertical reinforcing ribs 30 enhance the strength of the support plate 22 and the buffer plate 27, so that the support plate 22 and the buffer plate 27 are not easily broken or deformed.

[0034] Working principle of the present invention:

[0035] The rammed earth layer 2 in the base 1 enhances the solidity of the roadbed. The compacted soil layer can bear stronger pressure, and the roadbed is not easy to deform. The cushion layer 3 and the water-stabilizing layer 4 combine the road surface and the roadbed, so that the roadbed can meet the bearing load, and at the same time improve the water filtration of the roadbed, reduce the problem of reduced bearing capacity caused by water accumulation in the roadbed, and prevent the roadbed from softening. Finally, the concrete layer 5 and the asphalt layer 6 improve the strength of the roadbed. When the base 1 is working, rainwater gradually penetrates into the rammed earth layer 2 through the water-stabilizing layer 4 and the cushion layer 3, and the accumulated water gradually gathers into the water collection pipe 7 through the water collection trough 8 in the rammed earth layer 2. Finally, The water is discharged through the drainage pipe 9. Compared with the traditional roadbed, the water filterability of the roadbed is improved by the paving layer 3 and the water-stabilizing layer 4, and the collected water is discharged through the water collection trough 8 and the water collection pipe 7, so that the drainage speed inside the soil base is increased, and the soil layer is prevented from losing viscosity due to excessive moisture. In the rainy season, the soil and the accumulated water can be quickly separated, thereby preventing and controlling the softening problem of the highway roadbed and avoiding problems on the highway. The barrier net 13 in the water collection trough 8 will block the soil flowing down with the accumulated water to prevent the soil from entering the pipeline and causing the pipeline to be blocked, thereby affecting the drainage;

[0036] The edge of the roadbed is protected by setting a slope protection 14 on the surface of the roadbed, and plants can be planted in the planting grooves 17. The plant roots penetrate into the soil to consolidate the soil. The slope protection 14 and the planting grooves 17 cooperate with each other to make the soil at the edge of the roadbed more stable and less likely to cause landslides due to rain erosion. When the rainfall is too heavy or too timely, the drainage ditch 18 and the drainage ditch 19 quickly collect the rainwater into the drainage channel 16 for drainage, preventing the rainwater from eroding the slope protection 14 and preventing the rainwater from eroding the roadbed and softening the roadbed;

[0037] The support column 20 is combined with the support plate 22 to improve the bearing capacity of the paving layer 3, and the roadbed is not easily deformed. The buffer spring 26 and the buffer plate 27 cooperate with each other to buffer and protect the roadbed in daily life, enhance the buffering force of the road surface, and prevent the roadbed from being deformed due to long-term excessive pressure. The transverse reinforcement ribs 29 and the vertical reinforcement ribs 30 enhance the strength of the support plate 22 and the buffer plate 27, making the support plate 22 and the buffer plate 27 not easy to break and deform.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highway roadbed structure capable of preventing roadbed softening, comprising a base (1), characterized in that: The substrate (1) comprises a rammed earth layer (2), a cushion layer (3), a water-stable layer (4), a concrete layer (5), and an asphalt layer (6); the rammed earth layer (2), the cushion layer (3), the water-stable layer (4), the concrete layer (5), and the asphalt layer (6) are arranged in sequence from bottom to top; the cushion layer (3) is laid on the top of the rammed earth layer (2); the cushion layer (3) is matched with the rammed earth layer (2); the water-stable layer (4) is laid on the top of the cushion layer (3); the water-stable layer (4) is matched with the cushion layer (3); the water-stable layer (4) A concrete layer (5) is laid on the top, an asphalt layer (6) is laid on the top of the concrete layer (5), the thickness of the rammed earth layer (2), the cushion layer (3) and the water-stabilizing layer (4) is greater than the thickness of the concrete layer (5) and the asphalt layer (6), a water collecting pipe (7) is transversely arranged inside the rammed earth layer (2), and water collecting grooves (8) are arranged on the top of the water collecting pipe (7) at equal distances, the water collecting grooves (8) are matched with the water collecting pipe (7), and a drainage pipe (9) penetrating the base (1) is arranged on one side of the water collecting pipe (7).

2. The highway roadbed structure capable of preventing roadbed softening according to claim 1, characterized in that: The water collection trough (8) comprises a guard plate (10), the guard plate (10) is circular, the outer wall of the bottom of the guard plate (10) is provided with support rods (11) arranged in a circle at equal distances, the outer wall of the support rods (11) is provided with a fixing ring (12), the diameter of the fixing ring (12) is the same as the diameter of the guard plate (10), and the bottom of the water collection trough (8) is provided with a barrier net (13), and the barrier net (13) is adapted to the fixing ring (12).

3. The highway roadbed structure capable of preventing roadbed softening according to claim 2, characterized in that: The outer wall of the base (1) is provided with a slope protection (14), the slope protection (14) is arranged obliquely, the slope protection (14) is adapted to the base (1), a bottom plate (15) is provided at the bottom of the slope protection (14), the bottom plate (15) is adapted to the slope protection (14), a drainage channel (16) is provided at the top of the bottom plate (15), and the drainage pipe (9) leads to the inside of the drainage channel (16).

4. The highway roadbed structure capable of preventing roadbed softening according to claim 3, characterized in that: The outer wall of the slope protection (14) is provided with planting grooves (17) distributed at equal distances, and vertically arranged drainage grooves (18) are provided between the planting grooves (17), and the drainage grooves (18) are adapted to the planting grooves (17). The outer wall of the slope protection (14) is provided with drainage grooves (19) distributed at equal distances, and the drainage grooves (19) are located between the planting grooves (17). The bottom of the slope protection (14) is provided with a water collection slope leading to a drainage channel (16), and the drainage grooves (18) and the drainage grooves (19) are adapted to the water collection slope.

5. The highway roadbed structure capable of preventing roadbed softening according to claim 1, characterized in that: The cushion layer (3) is provided with support columns (20) distributed at equal distances inside, fixing bolts (21) are provided at both ends of the outer wall at the bottom of the support column (20), and a support plate (22) is provided at the top of the support column (20), and the support plate (22) is located on the top of the cushion layer (3).

6. The highway roadbed structure capable of preventing roadbed softening according to claim 5, characterized in that: The outer wall of the top of the support plate (22) is provided with water leakage holes (23) distributed at equal distances, and the top of the support plate (22) is provided with buffer components distributed at equal distances, the buffer components are located inside the water-stable layer (4), and the buffer components are adapted to the water-stable layer (4).

7. The highway roadbed structure capable of preventing roadbed softening according to claim 6, characterized in that: The buffer assembly comprises a buffer groove (24) fixed at an equal distance on the top of the support plate (21); a buffer rod (25) is slidably mounted on the inner wall of the buffer groove (24); a buffer spring (26) is arranged on the inner wall of the buffer groove (24); the end of the buffer spring (26) is connected to the buffer rod (25); and the buffer spring (26) is provided with a damper adapted thereto.

8. The highway roadbed structure capable of preventing roadbed softening according to claim 7, characterized in that: A buffer plate (27) is provided on the outer wall of the top of the buffer rod (25), and the buffer plate (27) is provided with drainage holes (28) distributed at equal distances, and the buffer plate (27) is adapted to the buffer rod (25).

9. The highway roadbed structure capable of preventing roadbed softening according to claim 8, characterized in that: The interior of the buffer plate (27) and the interior of the support plate (22) are both provided with equidistant transverse reinforcing ribs (29) and vertical reinforcing ribs (30), and the transverse reinforcing ribs (29) and vertical reinforcing ribs (30) are respectively adapted to the support plate (22) and the buffer plate (27).

10. The highway roadbed structure capable of preventing roadbed softening according to claim 1, characterized in that: The cushion layer (3) comprises crushed stone, aggregate, and gravel, and the water-stabilizing layer (4) comprises graded crushed stone aggregate, cement, and mixed materials.

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