Layered filling and reinforcing structure for flow-state solidified soil of expressway roadbed

Abstract

The invention provides a flow-state solidified soil layered filling and reinforcing structure of an expressway roadbed, and relates to the technical field of reinforcing structures, the flow-state solidified soil layered filling and reinforcing structure comprises a bottom reinforcing plate, conical fixing nails are arranged below the bottom reinforcing plate, side wing fixing anchors are fixedly installed on the circumferential surfaces of the conical fixing nails, and the bottom reinforcing plate is arranged on the bottom reinforcing plate. The surface of the bottom reinforcing plate is slightly sunken downwards with the center as the reference, the surface of the bottom reinforcing plate is made of waterproof materials, and a frost heaving fixing mechanism is arranged below the bottom reinforcing plate. Through arrangement of water leakage holes and water diversion channels in the frost heaving fixing mechanisms, water drainage pipelines in conical connecting columns and water outlets with water filtering structures in the side walls of the conical connecting columns, an efficient water drainage and frost heaving resistance cooperative system can be formed, and road surface seepage water collected on the surface of a bottom reinforcing plate can be converged into the water diversion channels along concave structures firstly; the water is accurately guided into the drainage pipeline in the conical connecting column through the water leakage hole; the side wall of the conical connecting column is provided with a water outlet.

Description

Technical Field

[0001] This invention belongs to the field of reinforcement structure technology, and more specifically, it relates to a layered filling reinforcement structure for fluidized solidified soil of highway subgrade. Background Technology

[0002] It adopts a fully enclosed, grade-separated design, with entrances and exits controlled by toll stations or ETC lanes, prohibiting non-motorized vehicles and pedestrians from entering. The road surface generally has four or more lanes in both directions, separated by median strips, and implements one-way traffic to ensure orderly traffic flow. At the same time, it has a high standard of alignment design and road surface quality to meet the needs of vehicles to travel at high speeds for extended periods, with speed limits typically ranging from 60 to 120 kilometers per hour. As an important transportation hub connecting cities, it significantly improves cross-regional transportation efficiency and plays a key role in promoting economic development.

[0003] The current roadbed reinforcement structure has been found to have at least the following problems: First, in temperate or cold-temperate regions with abundant rainfall and significant seasonal frost heave, highway subgrades are subjected to a long-term alternating working environment of "rainwater infiltration - low-temperature frost heave." Under such conditions, rainwater easily seeps into the subgrade through cracks, while low winter temperatures cause the moisture in the subgrade soil to freeze and expand. Although existing highway subgrade structures have basic drainage or frost-resistant measures, it is difficult to achieve synergy between the two. Either the residual moisture in the subgrade after drainage still easily triggers frost heave, or the frost-resistant structure is not designed in conjunction with drainage requirements, causing the reinforced components to be easily displaced by the soil expansion force during frost heave. This situation will cause the subgrade soil to soften due to long-term water accumulation, reducing its bearing capacity. In winter, the frost heave force may also push up the reinforced structure, thereby damaging the highway pavement, causing problems such as pavement cracking and local settlement, affecting road traffic safety, and shortening the service life of the highway.

[0004] Secondly, in highway sections with heavy rainfall, high humidity, or concentrated road surface seepage, the roadbed is in a working environment where moisture easily accumulates. Water seeping from the road surface flows freely on the roadbed surface and is difficult to collect and drain. Although some drainage pipes can guide water, the pipe inlets or sidewalls are prone to blockage due to external soil intrusion, affecting long-term drainage. These problems cause water to continuously accumulate inside the roadbed, leading to softening of the roadbed soil and loosening of the structure. This reduces the stability and bearing capacity of the roadbed base layer, and long-term use can easily cause local settlement and deformation of the roadbed. This not only affects the driving comfort of the highway but also requires frequent maintenance work, increasing road operating costs. Summary of the Invention

[0005] To address the challenges in rainy temperate or cold-temperate regions with significant seasonal frost heave, where rainwater easily seeps into the roadbed through cracks, and where low winter temperatures cause the moisture in the roadbed soil to freeze and expand, reinforcing components are susceptible to displacement due to soil expansion forces. This situation can lead to softening of the roadbed soil due to long-term water accumulation, reduced bearing capacity, and the potential for frost heave forces to lift the reinforcing structure, thereby damaging the highway pavement, causing cracks, localized settlement, and other problems that affect road safety and shorten the highway's service life, this invention provides a layered filling reinforcement structure for fluidized solidified soil in highway roadbeds to solve the aforementioned problems.

[0006] A layered filling reinforcement structure for fluidized solidified soil in highway subgrade includes a bottom reinforcement plate. A conical fixing nail is located below the bottom reinforcement plate, and a side-wing fixing anchor is fixedly installed on the circumferential surface of the conical fixing nail. The bottom reinforcement plate has a slightly concave surface with its center as a reference. The surface of the bottom reinforcement plate is made of waterproof material. A frost heave fixing mechanism is located below the bottom reinforcement plate to prevent the reinforcement structure from being pushed out by the frost heave of the soil in winter, thus preventing damage to the highway pavement. A shoulder anti-erosion mechanism is located above the bottom reinforcement plate to prevent soil loss from the highway subgrade, which could cause cavities.

[0007] Preferably, the frost heave fixing mechanism includes a water leakage hole that communicates with a water inlet channel. The water leakage hole is located on the bottom reinforcing plate. At least four conical connecting columns are fixedly installed below the bottom reinforcing plate. The water leakage hole is located above the conical connecting columns. A drainage pipe is provided inside the conical connecting columns. The drainage pipe is located below the water leakage hole and communicates with the water leakage hole. A water outlet is provided on the side wall of the conical connecting column. A water filter structure is covered on the water outlet, and the water outlet communicates with the drainage pipe. A conical fixing nail is fixedly installed below the conical connecting column. A waterproof ring is fixedly installed above the conical fixing nail. The waterproof ring is located on the circumferential surface of the conical connecting column, and a pressure sensor is fixedly installed on the waterproof ring.

[0008] Preferably, the shoulder anti-drainage mechanism includes a side splicing plate, which is fixedly installed on the side wall of the bottom reinforcement plate. A shaped support plate is fixedly installed on the upper end of the bottom reinforcement plate. A roadbed reinforcement side plate is fixedly installed on the bottom reinforcement plate. The roadbed reinforcement side plate is symmetrically fixedly installed on both sides of the shaped support plate. The shaped support plate has a wave-shaped design. A stepped baffle is fixedly installed on the bottom reinforcement plate. The stepped baffle has a stepped design.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a highly efficient drainage and frost-heave resistance system is formed by incorporating a frost-heave fixing mechanism with drainage holes, a water intake channel, a drainage pipe inside the conical connecting column, and a water outlet with a filter structure on the side wall of the conical connecting column. Road seepage water collected on the surface of the bottom reinforcing plate first flows along the recessed structure into the water intake channel, and then is precisely guided through the drainage holes into the drainage pipe inside the conical connecting column. At the water outlet on the side wall of the conical connecting column, the filter structure effectively prevents external soil from entering the pipe and causing blockage, while ensuring smooth drainage of water from the pipe. To prevent moisture from accumulating inside the roadbed and causing soil softening, and to ensure the roadbed base is dry and stable, some of the drained moisture will be absorbed by the surrounding soil in the area formed by the waterproof ring and the conical fixing nail. In winter, when the soil in this area contains moisture, it will freeze and swell, which will exert continuous downward pressure on the conical fixing nail. Combined with the fixing effect of the conical fixing nail, this further enhances the connection stability between the reinforced structure and the foundation, prevents the reinforced structure from being pushed out by the frozen and swelling soil and damaging the road surface, significantly improves the roadbed's resistance to frost heave, and reduces the risk of roadbed cracking and settlement in winter.

[0010] In this invention, a complete roadbed drainage system is formed by including a bottom reinforcing plate, a water intake channel, a drainage hole, a drainage pipe inside a conical connecting column, and a water outlet with a filter structure on the side wall of the conical connecting column. The bottom reinforcing plate is made of waterproof material and is slightly concave downward with the center as the reference, which can collect water seeping from the highway pavement and prevent water from flowing randomly on the roadbed surface. The collected water can flow into the water intake channel in an orderly manner along the concave structure, and then be stably introduced into the drainage pipe inside the conical connecting column through the drainage hole. Finally, it is discharged through the water outlet with a filter structure. The filter structure can not only prevent external soil from entering the pipe and causing blockage, ensuring the long-term smooth flow of the drainage channel, but also does not affect the smooth discharge of water, effectively preventing water from accumulating inside the roadbed.

[0011] In this invention, a conical fixing nail is provided below the bottom reinforcing plate, and a side wing fixing anchor is provided on the circumferential surface. The conical fixing nail can be deeply inserted into the foundation below the highway pavement to achieve a tight connection between the reinforcing structure and the foundation, and to initially fix the overall reinforcing device. The side wing fixing anchor can transmit and cancel the dispersed force exerted by the soil on the conical fixing nail when the soil frosts due to low temperature in winter, so as to prevent the conical fixing nail from making slight displacement due to excessive local stress, thereby preventing the reinforcing structure from being pushed out by the frost-swelling soil and protecting the highway pavement from damage.

[0012] In this invention, a corrugated support plate with a bottom reinforcing plate at the upper end is provided. Its special corrugated design can significantly increase the contact area with the roadbed soil, making the bond between the soil and the support plate tighter. This effectively reduces the vibration of the roadbed soil caused by vehicles passing on the highway surface, as well as the soil erosion caused by rainwater infiltration. This reduces the probability of voids appearing under the roadbed, avoids voids causing local settlement of the roadbed, ensures the integrity and stability of the roadbed structure, and extends the service life of the highway. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the irregular support plate structure of the present invention; Figure 3 This is a schematic diagram of the tapered connecting column structure of the present invention; Figure 4 This is a schematic diagram of the stepped baffle structure of the present invention; Figure 5 This is a schematic diagram of the bottom reinforcing plate structure of the present invention; Figure 6 This is a schematic diagram of the conical fixing nail structure of the present invention; Figure 7 This is a schematic diagram of the outlet structure of the present invention.

[0014] In the diagram, the correspondence between the component names and the attached drawing numbers is as follows: 1. Bottom reinforcement plate; 2. Side splicing plate; 3. Stepped baffle; 4. Water diversion channel; 5. Roadbed reinforcement side plate; 6. Irregular support plate; 7. Leakage hole; 8. Conical connecting column; 9. Drainage pipe; 10. Water outlet; 11. Conical fixing nail; 12. Side wing fixing anchor; 13. Waterproof ring; 14. Pressure sensor. Detailed Implementation

[0015] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0016] Please see Figures 1-7 This invention provides a layered filling reinforcement structure for fluidized solidified soil in highway subgrade, including a bottom reinforcement plate 1 for supporting the highway subgrade. A conical fixing nail 11 is provided below the bottom reinforcement plate 1, and a side fixing anchor 12 is fixedly installed on the circumferential surface of the conical fixing nail 11. The installation position of the conical fixing nail 11 is below the highway pavement and inserted into the foundation. The conical fixing nail 11 is used to fix the reinforcement structure, and the side fixing anchor 12 is used to prevent the reinforcement structure from shifting due to soil frost heave when the winter temperature is too low. The bottom reinforcement plate 1 is provided with a bottom reinforcement plate 1, and the surface of the bottom reinforcement plate 1 is slightly concave downward with the center as the reference. The surface of the bottom reinforcement plate 1 is made of waterproof material. The concavity on the surface of the bottom reinforcement plate 1 can collect and guide water seeping down from the road surface above. The water flow guided by the bottom reinforcement plate 1 can flow into the water diversion channel 4.

[0017] A frost heave fixing mechanism is provided below the bottom reinforcement plate 1. The frost heave fixing mechanism can prevent the reinforcement structure from being pushed out by the soil when the soil is frozen and bulging in winter, thus preventing damage to the highway pavement. A shoulder anti-loss mechanism is provided above the bottom reinforcement plate 1. The shoulder anti-loss mechanism can prevent the soil at the bottom of the highway subgrade from being lost and causing cavities.

[0018] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the frost heave fixing mechanism includes a drainage hole 7, which is connected to a water inlet channel 4. The drainage hole 7 is located on the bottom reinforcing plate 1. At least four conical connecting columns 8 are fixedly installed below the bottom reinforcing plate 1. The drainage hole 7 is located above the conical connecting columns 8. A drainage pipe 9 is opened inside the conical connecting columns 8, located below the drainage hole 7 and connected to the drainage hole 7. The water flow driven by the water inlet channel 4 on the bottom reinforcing plate 1 can enter the drainage pipe 9 through the drainage hole 7. The conical connecting column 8 is located on the side of the water inlet channel 4. The wall has an outlet 10, which is covered with a filter structure. The outlet 10 is connected to the drainage pipe 9. The filter structure prevents external soil from entering the conical connecting column 8 through the outlet 10 and causing pipe blockage, while water can still flow smoothly out of the outlet 10. Water in the drainage pipe 9 will be discharged outward from the outlet 10. A conical fixing nail 11 is fixedly installed below the conical connecting column 8, and a waterproof ring 13 is fixedly installed above the conical fixing nail 11. The waterproof ring 13 is located on the conical connecting column 8. The conical connecting column 8 and the upper end of the conical fixing nail 11 form a structure similar to a water reservoir. When water flows from the outlet 10 into the water reservoir structure formed by the waterproof ring 13 and the conical fixing nail 11, the water in the reservoir is only absorbed by the soil from above because the lower part of the reservoir is closed by the upper end of the conical fixing nail 11. In cold winters, the soil above will freeze and expand, exerting a downward force on the conical fixing nail 11, which makes the reinforcement structure better fix the highway subgrade. In cold winters, when the soil near the conical fixing nail 11 freezes and expands, the force exerted by the soil on the conical fixing nail 11 will be transmitted to each other under the action of the side fixing anchors 12, so that the conical fixing nail 11 will not be slightly displaced due to external reasons. A pressure sensor 14 is fixedly installed on the waterproof ring 13. The pressure sensor 14 is used to detect the soil pressure in the waterproof ring 13 and will issue an alarm when there is an abnormality.

[0019] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the shoulder anti-soil loss mechanism includes a side splicing plate 2, which is fixedly installed on the side wall of the bottom reinforcement plate 1. The side splicing plates 2 of multiple reinforcement structures can be spliced ​​together. The side splicing plates 2 are used for splicing and position confirmation of multiple reinforcement structures. A special-shaped support plate 6 is fixedly installed on the upper end of the bottom reinforcement plate 1. A roadbed reinforcement side plate 5 is fixedly installed on the bottom reinforcement plate 1. The roadbed reinforcement side plate 5 is symmetrically fixed on both sides of the special-shaped support plate 6. The special-shaped support plate 6 has a wave-shaped design. The special design of the special-shaped support plate 6 can increase the contact surface with the roadbed soil. The special-shaped support plate 6 can reduce the bulge under the roadbed caused by vibration and soil erosion transmitted from the highway surface. A stepped baffle 3 is fixedly installed on the bottom reinforcement plate 1. The stepped baffle 3 has a stepped design. The stepped baffle 3 is installed below the shoulder near the edge of the highway. The stepped baffle 3 can prevent soil from flowing away from the edge of the highway.

[0020] Bottom reinforcement plate 1: Used to support the highway subgrade and ensure the overall load-bearing stability of the subgrade; the surface is made of waterproof material and is slightly concave downward with the center as the reference, which can not only prevent water from seeping into the structure below, but also collect water seeping from the road surface above and guide it into the water diversion channel 4; at the same time, it serves as the installation carrier for other key structures. The tapered connecting column 8 can be fixed below, and the irregular support plate 6, stepped baffle 3, etc. can be installed above. It is the basic frame component of the entire reinforcement structure.

[0021] Side splicing plate 2: It belongs to the shoulder anti-loss mechanism and is fixedly installed on the side wall of the bottom reinforcement plate 1. It can realize the splicing and position confirmation of multiple reinforcement structures. Through multiple splicing, it ensures the neatness and continuity of the overall reinforcement structure laying, provides a clear position benchmark for the installation of each reinforcement structure, and facilitates the orderly development of roadbed reinforcement construction.

[0022] Stepped baffle 3: It is a shoulder anti-soil loss mechanism, fixed on the bottom reinforcement plate 1. The installation position is close to the edge of the highway and below the shoulder. It adopts a stepped design; it can prevent the roadbed soil from being lost from the edge of the highway, avoid the formation of cavities in the roadbed due to soil loss, and thus ensure the bearing capacity and safety of the roadbed in the shoulder area, and prevent the shoulder from collapsing due to cavities.

[0023] Water channel 4: Receives the road seepage water collected by the bottom reinforcement plate 1 and guides the water to the drain hole 7 through its own channel structure; as an intermediate link connecting "water collection" and "water discharge", it can prevent water from lingering or flowing randomly on the surface of the bottom reinforcement plate 1 and ensure that water enters the subsequent drainage components in an orderly manner.

[0024] Roadbed reinforcement side plate 5: It belongs to the shoulder anti-erosion mechanism and is symmetrically fixed on both sides of the irregular support plate 6; it assists the irregular support plate 6 in reinforcing the roadbed, and prevents the soil from being squeezed and deformed to both sides by forming lateral constraints on the roadbed soil, thereby further improving the overall stability of the roadbed; at the same time, it can disperse the vertical pressure borne by the roadbed and evenly transmit the pressure to the bottom reinforcement plate 1, so as to avoid local damage to the roadbed due to excessive stress.

[0025] Irregular support plate 6: It belongs to the shoulder anti-erosion mechanism and is fixed to the upper end of the bottom reinforcement plate 1. It adopts a wave-shaped design. Its special shape can increase the contact area with the roadbed soil and enhance the bonding with the soil, thereby reducing the roadbed soil from vibration transmitted from the highway road surface and the voids under the roadbed caused by water and soil erosion. It ensures the integrity and stability of the roadbed structure and avoids local settlement of the roadbed due to voids.

[0026] Leakage hole 7: It belongs to the frost heave fixing mechanism, is opened on the bottom reinforcement plate 1, and is connected to the water inlet channel 4 and the drainage pipe 9; it acts as a "transfer channel" for water, accurately guiding the water in the water inlet channel 4 into the drainage pipe 9 of the lower conical connecting column 8, providing a key interface for water to enter the discharge stage from the collection stage, and ensuring the continuity of the drainage process.

[0027] Conical connecting column 8: It belongs to the frost heave fixing mechanism and is fixed below the bottom reinforcement plate 1. At least four are installed to ensure stable support. It has a drainage pipe 9 inside to provide space for water to drain out. At the same time, it cooperates with the upper end of the conical fixing nail 11 to form a structure similar to a water storage tank, which can retain some of the water discharged from the outlet 10 for the surrounding soil to absorb in winter. This creates conditions for the soil to generate downward pressure due to frost heave and enhance the fixing effect of the reinforcement structure. It is the core support component of the frost heave fixing mechanism.

[0028] Drainage pipe 9: It belongs to the frost heave fixing mechanism and is located inside the conical connecting column 8. It is connected to the water leakage hole 7 and the water outlet 10 at the top and bottom respectively. It receives the water from the water leakage hole 7 and guides the water stably to the water outlet 10. It serves as a "transport channel" for water inside the conical connecting column 8 to ensure that the water can smoothly reach the discharge port.

[0029] Outlet 10: It is a frost heave fixing mechanism, located on the side wall of the conical connecting column 8, connected to the drainage pipe 9 and covered with a water filter structure; its main function is to discharge the water in the drainage pipe 9 to the outside, completing the final discharge of water inside the roadbed; together with the water filter structure, it can prevent external soil from intruding while discharging water, ensuring the long-term smooth flow of the drainage channel.

[0030] Conical fixing nail 11: Installed below the highway pavement and inserted into the foundation, and fixedly connected to the conical connecting column 8 below; used to tightly connect the entire reinforcement structure to the foundation, realizing the initial fixation of the reinforcement structure; together with the waterproof ring 13 and the conical connecting column 8, it forms a structure similar to a water storage tank. After the soil in this area absorbs water and freezes in winter, it will exert downward pressure on it, further enhancing the fixing effect between the reinforcement structure and the roadbed; at the same time, it can work with the side fixing anchor 12 to transmit the dispersed force generated by the freezing and swelling of the soil in winter, avoiding slight displacement due to external forces.

[0031] Side-wing fixing anchor 12: fixed on the circumferential surface of the conical fixing nail 11; mainly to deal with the problem of soil frost heave in winter. When the soil near the conical fixing nail 11 frosts and exerts pressure on the conical fixing nail 11 in winter, it can transmit and cancel these dispersed expansion forces to each other, prevent the conical fixing nail 11 from shifting due to excessive local force, and thus prevent the entire reinforcement structure from being pushed out by the frost heave soil, protecting the highway pavement from damage.

[0032] Waterproof ring 13: It belongs to the frost heave fixing mechanism, is fixed on the circumferential surface of the conical connecting column 8, and is located above the conical fixing nail 11; together with the conical connecting column 8 and the conical fixing nail 11, it forms a structure similar to a water storage tank, which can block some of the water discharged from the outlet 10, so that the water is concentrated in the area for the surrounding soil to absorb; at the same time, it serves as the mounting carrier of the pressure sensor 14, providing a stable mounting position for the pressure detection component.

[0033] Pressure sensor 14: It belongs to the frost heave fixing mechanism and is fixed on the waterproof ring 13. It monitors the pressure changes of the soil around the waterproof ring 13 in real time. When the soil pressure is abnormal due to excessive frost heave, local settlement or other reasons, it will issue an alarm in time to remind the staff to check for hidden dangers and avoid failure of the reinforcement structure due to abnormal soil pressure, so as to ensure the safety of the roadbed.

[0034] Working principle: The first step is to install the bottom fixing and frost heave protection basic components. Insert the conical fixing nails 11 below the bottom reinforcement plate 1 into the foundation below the highway pavement, ensuring that the side fixing anchors 12 on the circumferential surface of the conical fixing nails 11 are fully embedded in the foundation to initially fix the reinforcement structure and prevent subsequent displacement caused by frost heave. Fix at least four conical connecting columns 8 below the bottom reinforcement plate 1, ensuring that the drainage holes 7 on the bottom reinforcement plate 1 are located directly above the conical connecting columns 8. Install waterproof rings 13 on the circumferential surface of the conical connecting columns 8 and assemble pressure sensors 14 on the waterproof rings 13 to complete the basic assembly of the bottom fixing and frost heave protection.

[0035] The second step is to fix the side splicing plate 2 to the side wall of the bottom reinforcement plate 1. The side splicing plate 2 enables the splicing and positioning of multiple reinforcement structures. The wavy-shaped support plate 6 is fixedly installed at the upper end of the bottom reinforcement plate 1, and the roadbed reinforcement side plate 5 is symmetrically fixedly installed on both sides of the wavy support plate 6. The wavy support plate 6 is used to increase the contact surface with the roadbed soil to reduce empty space. The stepped baffle 3 is fixedly installed on the bottom reinforcement plate 1 below the shoulder near the edge of the highway to complete the assembly of the shoulder anti-loss related components.

[0036] Thirdly, the water seeping from the highway surface is collected by the bottom reinforcement plate 1, which is slightly concave and made of waterproof material, and guided into the water channel 4. The water flows into the drain hole 7 connected to the water channel 4, and then into the drainage pipe 9 in the lower conical connecting column 8. Finally, it is discharged from the outlet 10 with a filter structure on the side wall of the conical connecting column 8. The filter structure can prevent soil from clogging the pipe. In winter, when the temperature is low, some water is absorbed by the soil in the area formed by the waterproof ring 13 and the conical fixing nail 11. After the soil freezes and expands, it exerts downward pressure on the conical fixing nail 11. Together with the side fixing anchor 12, it further prevents the reinforcement structure from shifting. At the same time, the pressure sensor 14 on the waterproof ring 13 detects the surrounding soil pressure in real time. When the pressure is abnormal, it issues an alarm to ensure the stability of the reinforcement structure.

[0037] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A layered filling and reinforcement structure for fluidized solidified soil in highway subgrade, comprising a bottom reinforcement plate (1), characterized in that: The bottom reinforcing plate (1) is provided with a conical fixing nail (11) below it. A side wing fixing anchor (12) is fixedly installed on the circumferential surface of the conical fixing nail (11). The bottom reinforcing plate (1) is provided on the bottom reinforcing plate (1). The surface of the bottom reinforcing plate (1) is slightly concave downward with the center as the reference. The surface of the bottom reinforcing plate (1) is made of waterproof material. The bottom reinforcement plate (1) is provided with a frost heave fixing mechanism. The frost heave fixing mechanism can prevent the reinforcement structure from being pushed out by the soil when the soil is frozen and swelled in winter, thus damaging the highway pavement. The bottom reinforcement plate (1) is provided with a shoulder anti-loss mechanism. The shoulder anti-loss mechanism can prevent the soil of the bottom roadbed of the highway from being lost and causing cavities.

2. The fluidized solidified soil layered filling reinforcement structure for highway subgrade as described in claim 1, characterized in that, The frost heave fixing mechanism includes a water leakage hole (7), which is connected to the water channel (4) and is located on the bottom reinforcing plate (1).

3. The layered filling and reinforcement structure for fluidized solidified soil of highway subgrade as described in claim 2, characterized in that, At least four conical connecting columns (8) are fixedly installed below the bottom reinforcing plate (1), and the water leakage hole (7) is located above the conical connecting column (8).

4. The layered filling and reinforcement structure for fluidized solidified soil of highway subgrade as described in claim 3, characterized in that, The conical connecting column (8) is provided with a drainage pipe (9), which is located below the water leakage hole (7) and is connected to the water leakage hole (7).

5. The fluidized solidified soil layered filling reinforcement structure for highway subgrade as described in claim 4, characterized in that, The conical connecting column (8) has a water outlet (10) on its side wall. The water outlet (10) is covered with a water filter structure and is connected to the drainage pipe (9).

6. The fluidized solidified soil layered filling reinforcement structure for highway subgrade as described in claim 5, characterized in that, The conical fixing nail (11) is fixedly installed below the conical connecting column (8), and a waterproof ring (13) is fixedly installed above the conical fixing nail (11). The waterproof ring (13) is located on the circumferential surface of the conical connecting column (8), and a pressure sensor (14) is fixedly installed on the waterproof ring (13).

7. The layered filling and reinforcement structure for fluidized solidified soil of highway subgrade as described in claim 6, characterized in that, The shoulder anti-drainage mechanism includes a side splicing plate (2), which is fixedly installed on the side wall of the bottom reinforcement plate (1).

8. The fluidized solidified soil layered filling reinforcement structure for highway subgrade as described in claim 7, characterized in that, A shaped support plate (6) is fixedly installed on the upper end of the bottom reinforcement plate (1), and a roadbed reinforcement side plate (5) is fixedly installed on the bottom reinforcement plate (1).

9. The fluidized solidified soil layered filling reinforcement structure for highway subgrade as described in claim 8, characterized in that, The roadbed reinforcement side plate (5) is symmetrically fixed on both sides of the irregular support plate (6), which is a wave-shaped design.

10. The layered filling and reinforcement structure for fluidized solidified soil of highway subgrade as described in claim 9, characterized in that, A stepped baffle (3) is fixedly installed on the bottom reinforcing plate (1), and the stepped baffle (3) is a stepped design.

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