Roadbed slope protection structure

Abstract

The present application relates to the technical field of slope protection, and particularly relates to a roadbed slope protection structure, which comprises an anchor rod, a main framework, a bottom inlay edge and a top inlay edge; an anchoring plate applies a force directed to a roadbed slope to a main connecting plate, the bottom inlay edge and the top inlay edge spliced with the anchoring plate, and the beneficial effect is that the anchoring plate applies the force directed to the roadbed slope to the main connecting plate, the bottom inlay edge and the top inlay edge spliced with the anchoring plate through a mechanical anchoring mode, a positive protection mechanism is formed, the protection structure can apply pressure to the roadbed slope in an integrated manner, lateral pressure of a slope soil body can be effectively offset, structural anti-sliding capability can be improved, compared with a traditional passive protection mode, structural stability can be significantly enhanced, and slope instability risk can be reduced. Modular assembly reduces on-site wet work, shortens a construction period; a component splicing mode simplifies a construction process, reduces a technical threshold, and is suitable for large-scale popularization and application.

Description

Technical Field

[0001] This invention relates to the technical field of slope protection, and more particularly to a roadbed slope protection structure. Background Technology

[0002] Roadbed slope protection is a crucial aspect of road construction, ensuring slope stability and preventing soil erosion. Traditional protection structures are often built using methods such as on-site casting, resulting in low standardization of components and difficulty in flexibly adjusting them according to the actual dimensions of the slope. This leads to poor adaptability to different roadbed slopes, making construction difficult and providing inadequate protection when facing slopes with complex terrain or special dimensional requirements.

[0003] To address the aforementioned issues, prefabricated roadbed slope protection components have emerged. For example, invention patent application number 202011080148.2 discloses a prefabricated roadbed slope protection structure and its construction method. This roadbed slope protection structure is assembled from prefabricated interlocking blocks, ensuring quality control and minimizing wet work surfaces. Furthermore, it reduces pollution from solid waste, dust, wastewater, and noise, minimizing its impact on the construction site environment. Simultaneously, construction is less affected by weather conditions, resulting in high construction efficiency.

[0004] However, its splicing method is a simple assembly, and no prestress is applied to the roadbed slope. As a result, after rainwater erosion and roadbed slope settlement, the protective structure is prone to loosening, thereby reducing the protection quality. In other words, this technical solution is still passive protection, and the risk of slope instability is relatively high. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a roadbed slope protection structure, which solves the technical problem that the existing assembled roadbed slope protection structure does not apply prestress to the roadbed slope, resulting in a high risk of slope instability.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, the present invention provides a roadbed slope protection structure, comprising anchor bolts, a main frame, a bottom edge, and a top edge; the main frame is configured as multiple sets extending vertically and distributed in parallel, each main frame including an anchor plate and a main connecting plate, the anchor plates and the main connecting plates being sequentially and vertically staggered, and both ends of the main frame being anchor plates; the bottom edge and the top edge are configured as multiple, the two ends of the bottom edge corresponding to the left and right sides of the two horizontally adjacent bottom anchor plates, and the two ends of the top edge corresponding to the left and right sides of the two horizontally adjacent top anchor plates; wherein, the anchor plates maintain applying a force pointing towards the roadbed slope to the main connecting plates, bottom edges, and top edges to which they are spliced.

[0010] (III) Beneficial Effects

[0011] The beneficial effects of the present invention are: the roadbed slope protection structure of the present invention adopts a modular structure, and each component is prefabricated in the factory in advance, which is conducive to improving the standardization. In addition, the size of each component can be flexibly adjusted according to the size of the slope during the prefabrication process, thereby improving the adaptability of the roadbed slope protection structure to different roadbed slopes.

[0012] The main frame module uses vertically extending anchor plates and main connecting plates alternately spliced ​​to form standardized frame units. The anchor plates are anchored to the roadbed slope by anchor rods, ensuring their own stability. At the same time, the anchor rods can maintain pressure on the anchor plates pointing towards the roadbed slope, ensuring that the anchor plates can be stably and reliably attached to the roadbed slope.

[0013] Since the main frame is not a single structure, but includes staggered anchor plates and main connecting plates, its length setting is more flexible.

[0014] The bottom and top edgings, serving as lateral connectors, are prefabricated and assembled to achieve rapid connection with the anchor plate. The splicing design of the left and right sides of the anchor plate with the top and bottom edgings forms a closed slope protection system, improving the integrity and stability of the protection structure.

[0015] The anchor plate applies a force pointing towards the roadbed slope to the main connecting plate, bottom edge, and top edge it is mechanically anchored to form an active protection mechanism. This allows the protective structure to apply pressure to the roadbed slope as a whole, effectively offsetting the lateral pressure of the slope soil and improving the structure's resistance to sliding. Compared with traditional passive protection methods, this significantly enhances structural stability and reduces the risk of slope instability. Modular assembly reduces on-site wet work and shortens the construction period; the component splicing method simplifies the construction process, lowers the technical threshold, and is suitable for large-scale promotion and application. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the roadbed slope protection structure of the present invention;

[0017] Figure 2 This is the second schematic diagram of the roadbed slope protection structure of the present invention;

[0018] Figure 3 This is the third schematic diagram of the roadbed slope protection structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the mating structure of the first insert and the first slot of the present invention;

[0020] Figure 5 This is a schematic diagram of the mating structure of the anchor plate and the main connecting plate, or the anchor plate and the top inlay, according to the present invention.

[0021] [Explanation of Labels in the Attached Image]

[0022] 1. Anchor bolt;

[0023] 2. Main frame; 21. Anchor plate; 22. Main connecting plate; A. First inclined surface; B. Second inclined surface; C. First protrusion; D. First groove;

[0024] 3. Bottom edging;

[0025] G, First insert; H, First slot; I, Third beveled surface; J, Fourth beveled surface;

[0026] 4. Top bezel; K, fifth beveled surface; L, sixth beveled surface; M, second protrusion; N, second groove;

[0027] 5. Sub-frame; 51. Arc-shaped plate; E. Convex part; F. Recessed part;

[0028] 6. Frames;

[0029] O, second insert block; P, second slot; Detailed Implementation

[0030] To better explain and facilitate understanding of this invention, the following description is provided in conjunction with the appendix. Figures 1-5 The present invention will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0031] Example:

[0032] Reference Figures 1-5An embodiment of the present invention provides a roadbed slope protection structure, including an anchor rod 1, a main frame 2, a bottom edge 3, and a top edge 4. The main frame 2 is configured as multiple sets extending vertically and distributed in parallel. Each main frame 2 includes an anchor plate 21 and a main connecting plate 22. The anchor plates 21 and the main connecting plates 22 are sequentially and vertically staggered, and both ends of the main frame 2 are anchor plates 21. The bottom edge 3 and the top edge 4 are configured as multiple sets. The two ends of the bottom edge 3 are spliced ​​to the left and right sides of the two lowermost anchor plates 21 that are adjacent to each other in the horizontal direction. The two ends of the top edge 4 are spliced ​​to the left and right sides of the two uppermost anchor plates 21 that are adjacent to each other in the horizontal direction. The anchor plates 21 maintain a force pointing towards the roadbed slope on the bottom edge 3 and the top edge 4 that are spliced ​​with them.

[0033] In this embodiment, the roadbed slope protection structure adopts a modular structure, with each component prefabricated in the factory in advance. This helps to improve the standardization level, and the size of each component can be flexibly adjusted according to the size of the slope during the prefabrication process, thereby improving the adaptability of the roadbed slope protection structure to different roadbed slopes.

[0034] The main frame module 2 uses vertically extending anchor plates 21 and main connecting plates 22 alternately spliced ​​to form a standardized frame unit. The anchor plates 21 are anchored to the roadbed slope by anchor rods 1, ensuring their own stability. At the same time, the anchor rods 1, anchored to the roadbed slope, can maintain pressure on the anchor plates 21 pointing towards the roadbed slope, ensuring that the anchor plates 21 can be stably and reliably attached to the roadbed slope.

[0035] Since the main frame 2 is not a single structure, but includes staggered anchor plates 21 and main connecting plates 22, its length setting is more flexible.

[0036] The bottom edge 3 and top edge 4 serve as transverse connectors, achieving rapid connection with the anchor plate 21 through prefabrication and assembly. The splicing design of the left and right sides of the anchor plate 21 with the top edge 4 and bottom edge 3 forms a closed slope protection system, improving the integrity and stability of the protection structure.

[0037] Because this invention always uses an anchor plate 21 to press against two adjacent components, and each anchor plate 21 is prestressed by an anchor rod 1, it ensures that all components are pressed against the roadbed slope, forming an active protection mechanism. This allows the integrated protective structure to apply pressure to the roadbed slope, effectively offsetting the lateral pressure of the slope soil and improving the structure's anti-slip capacity. Compared to traditional passive protection methods, it significantly enhances structural stability and reduces the risk of slope instability. Modular assembly reduces on-site wet work and shortens the construction period; the component splicing method simplifies the construction process, lowers the technical threshold, and is suitable for large-scale promotion and application.

[0038] Standardized production reduces material waste and labor costs, while modular assembly shortens the construction cycle, resulting in an overall cost reduction of approximately 20%-30% compared to traditional solutions.

[0039] Precast components can be made of weather-resistant materials to adapt to extreme environments such as high altitude and high humidity; modular design facilitates later maintenance and replacement, extending the service life of the structure.

[0040] In a set of main frames 2, the opposite ends of the anchor plate 21 and the main connecting plate 22 are a first inclined surface A and a second inclined surface B that fit together, and the first inclined surface A corresponding to the anchor plate 21 extends from the side away from the roadbed slope toward the main connecting plate 22 that it is spliced ​​with.

[0041] In this embodiment, the anchoring force of the anchor plate 21 can be transmitted to the main connecting plate 22 through the interlocking of the first inclined surface A and the second inclined surface B, so that the main connecting plate 22 keeps pressing the roadbed slope.

[0042] Specifically, the first inclined section A forms a wedge-shaped structure, and the second inclined section B has a complementary shape to the first inclined section A. The anchor plate 21 and the main connecting plate 22 are tightly joined through the inclined surfaces. The anchor plate 21 is preloaded by the anchor rod 1, which on the one hand compresses the main connecting plate 22 against the roadbed slope, effectively resisting the lateral pressure of the slope soil and improving the overall anti-slip capacity of the structure; on the other hand, it also ensures a tight connection between the adjacent main connecting plate 22 and the anchor plate 21, limiting the relative displacement between the anchor plate 21 and the main connecting plate 22, thus allowing for a certain range of splicing errors, which are automatically corrected by the wedge-shaped action of the inclined surfaces, reducing construction difficulty.

[0043] The bevel processing of the anchor plate 21 and the main connecting plate 22 must be of high precision, and the bevel angle deviation should be controlled within ±0.5° to ensure that the splicing surfaces fit tightly.

[0044] The preload of anchor bolt 1 needs to be calculated and determined based on the slope soil parameters and structural dimensions, and is generally controlled at 1.2-1.5 times the design value to ensure that the slope friction is sufficient to resist the slope soil pressure.

[0045] The splicing surfaces of precast components should be ground to remove surface laitance and impurities, and to improve the fit of the inclined surfaces.

[0046] A first groove D and a first protrusion C are formed on the first inclined surface A and the second inclined surface B, respectively; the first protrusion C and the first groove D can fit together when the first inclined surface A and the second inclined surface B are engaged, so as to restrict the degree of freedom of the first inclined surface A and the second inclined surface B to move laterally relative to each other.

[0047] In this embodiment, the lateral restraint function of the first protrusion C and the first groove D significantly improves the anti-slip capability and overall stability of the spliced ​​structure. The first protrusion C is embedded in the first groove D, forming a lateral restraint to prevent relative slippage at the inclined splice. The interlocking structure converts the lateral shear force into the compressive stress between the protrusion and the groove, significantly improving the anti-lateral slippage capability of the spliced ​​surface. The lateral restraint effectively resists the torsional effect of the slope soil on the main frame 2, reducing the risk of structural deformation.

[0048] The inclined interlocking and convex-concave interlocking form a dual constraint in the longitudinal and lateral directions, making the anchor plate 21 and the main connecting plate 22 cooperative force-bearing units, thereby improving the overall load-bearing capacity of the structure. The lateral limiting effect reduces fretting wear on the splicing surface, delays fatigue crack propagation, and extends the service life of the structure. At the same time, the first groove D and the first protrusion C play a positioning role during the engagement, which helps to improve construction efficiency.

[0049] The roadbed slope protection structure also includes multiple sets of sub-frames 5. The two transverse ends of the sub-frames 5 correspond to the left and right sides of two adjacent anchor plates 21 in the transverse direction, excluding the anchor plates 21 at the vertical ends. The anchor plates 21 also maintain the application of a force pointing towards the roadbed slope to the sub-frames 5 they are spliced ​​with.

[0050] In this embodiment, a multi-dimensional, three-dimensional slope protection system is constructed through the lateral splicing of the sub-frame 5 and the anchor plate 21 and the pre-stress transfer mechanism. The two ends of the laterally extending sub-frame 5 are spliced ​​with the left and right sides of the anchor plate 21, forming a lateral connection network. The main frame 2 and the sub-frame 5 form a grid-like support, effectively dispersing the lateral pressure on the slope soil and reducing local stress concentration. The introduction of the lateral sub-frame 5 significantly improves the structure's anti-slip capacity, adapting to the slope protection needs of steeper slopes. The splicing of the sub-frame 5 and the anchor plate 21 forms a continuous overlay layer, enhancing the slope surface's resistance to erosion. The multi-dimensional assembly structure limits the crack propagation path and slows down the slope deterioration process.

[0051] The secondary frame 5 can be flexibly increased or decreased according to the slope size to meet the needs of projects of different scales.

[0052] By expanding the sub-framework into 5 modules laterally, a three-dimensional upgrade of the slope protection structure is achieved. Its advantages in anti-slip, anti-erosion, and local reinforcement significantly improve the structural stability under complex geological conditions.

[0053] Each of the sub-frames 5 includes two horizontally spliced ​​arc-shaped plates 51. The two ends of the two arc-shaped plates 51 that are far apart are spliced ​​with two corresponding horizontally adjacent anchor plates 21. The preload of the anchor rod 1 is applied to the arc-shaped plate 51 through the anchor plate 21. The arc-shaped plate 51 converts the pressure into a radial constraint force on the slope soil, so as to realize the coordinated force of the structure and the soil.

[0054] The arc-shaped structure helps to reduce stress. Through the curvature effect of the arc plate module 51, the stress of the slope protection structure is optimized, thereby improving the strength of the protection structure and significantly enhancing the structural stability under complex geological conditions.

[0055] One of the two adjacent arc-shaped plates 51 extends laterally to form a convex part E, and the other extends laterally to form a concave part F. The convex part E and the concave part F match, and when the convex part E and the concave part F match, the degree of freedom of relative displacement of the planes of the two arc-shaped plates 51 extending in the front-back direction is restricted.

[0056] In the adjacent arc-shaped plates 51, one extends laterally to form a convex part E, and the other is concave to form a concave part F. The two shapes are complementary, which restricts the sliding movement of the plane extending along the front-back direction of the arc-shaped plate 51, thereby ensuring the connection stability of the adjacent arc-shaped plates 51. At the same time, it can also effectively resist the problem of plane displacement of the arc-shaped plate 51 caused by the deformation of the slope soil, thereby improving the protective effect of the protective structure.

[0057] Specifically, the concave part F can be set as a frustum-shaped groove, and the convex part F can be set as a frustum-shaped protrusion.

[0058] Both ends of the bottom edging 3 and both ends of the sub-frame 5 extend out first insert blocks G. The anchor plate 21 has a first slot H on its side wall facing the roadbed slope. The side of the first slot H facing the roadbed slope is open, and the first insert block G can match the first slot H. The first insert block G and the first slot H are respectively formed with a third inclined surface I and a fourth inclined surface J that can fit together. The lower ends of the third inclined surface I and the fourth inclined surface J are inclined away from the roadbed slope.

[0059] In this embodiment, the first insert G extending from both ends of the bottom edging 3 / sub-frame 5 is spliced ​​with the first slot H on the side wall of the anchor plate 21. The first slot H is open towards the roadbed slope side, facilitating the insertion of the first insert G. The preload of the anchor rod 1 is transmitted to the first slot H through the anchor plate 21. The inclined mating structure converts the preload into normal pressure between the first insert G and the first slot H, enhancing pull-out resistance. Under the action of the preload, the inclined mating generates a normal component force, causing the first insert G and the first slot H to form a self-locking mechanism, restricting relative sliding, and thus improving connection stability.

[0060] Since the lower ends of the third inclined section I and the fourth inclined section J are inclined away from the roadbed slope, when the anchor plate 21 applies pressure to the bottom edge 3 and the sub-frame 5, the bottom edge 3 and the sub-frame 5 will slide downward and adaptively ensure the fit of the third inclined section I and the fourth inclined section J, thereby improving the vertical stability of the bottom edge 3 and the sub-frame 5, preventing them from shaking, and thus improving the stability of the protective structure.

[0061] Furthermore, the length of the first slot H is greater than the length of the first insert G, so that when the third inclined surface I and the fourth inclined surface J press against each other, the first insert G can slide within the first slot H.

[0062] The first slot block can slide between an initial position and a stable position relative to the first slot H. In the initial position, the first insert block G moves closer to the smaller end of the first slot H, and the side wall of the first insert block G near the roadbed slope protrudes from the side wall of the anchor plate 21 facing the roadbed slope. During the process of the first insert block G sliding from the initial position to the stable position, the third inclined surface I and the fourth inclined surface J are gradually pressed together until they slide to a balanced position. This ensures the tight connection between the first insert block G and the first slot H, thereby improving the stability and reliability of the roadbed slope protection structure.

[0063] Because the present invention adopts a modular splicing structure with inclined face joints, when soil erosion occurs on the roadbed slope, the gap between the protective structure and the roadbed slope can be compensated by increasing the preload of the anchor rod 1, thereby greatly improving the flexibility of the protective structure.

[0064] The left and right sides of the upper anchor plate 21 form a fifth inclined surface K, and the two ends of the top edge 4 form a sixth inclined surface L. The fifth inclined surface K can match the sixth inclined surface L, and the side of the fifth inclined surface away from the roadbed slope extends towards the top edge 4 that it is spliced ​​with. The fifth inclined surface K and the sixth inclined surface L respectively form a second groove N and a second protrusion M that can match each other, so as to restrict the degree of freedom of relative misalignment between the top edge 4 and the anchor plate 21. The lower sidewall of the top edge 4 and the upper anchor plate 21 form an arc shape.

[0065] In this embodiment, the inclined surface mating structure of the fifth inclined surface K and the sixth inclined surface L, combined with the mechanical locking of the second protrusion M and the second groove N, achieves high-precision positioning, pull-out and shear strengthening, and anti-slip locking between the top edge 4 and the anchor plate 21, significantly improving the integrity, stability, and durability of the slope protection structure. The arc-shaped structure helps reduce stress; through the curvature effect of the arc-shaped plate 51 module, stress optimization of the slope protection structure is achieved, thereby improving the strength of the protection structure and significantly enhancing the structural stability under complex geological conditions.

[0066] The top edging 4, bottom edging 3, and sub-frame 5 are set in multiple length models. Therefore, by prefabricating top edging 4, bottom edging 3, and sub-frame 5 of different lengths, and combining them with the main frame 2 of different splicing numbers, the protection needs of roadbed slopes within a certain size range can be met, greatly improving the flexibility of the protection structure.

[0067] The planting area is formed by the corresponding sub-frame 5 and main frame 2, the corresponding bottom edging 3, sub-frame 5 and main frame 2, and the corresponding top edging 4, sub-frame 5 and main frame 2; the roadbed slope protection structure also includes the grid 6 distributed in the planting area, and vegetation is planted in the grid 6.

[0068] In this embodiment, the roadbed slope protection structure achieves enhanced slope protection stability, soil and water conservation, and ecological landscaping through the coordinated design of planting areas and frame 6 vegetation, combined with the skeleton support system and ecological restoration function.

[0069] Within the planting area, create grids 6, such as concrete grids 6, fill the grids with planting soil, and plant vegetation. The root systems of the vegetation work together with the grids 6 to enhance slope stability. The vegetation reduces rainwater erosion, decreases soil loss, promotes soil microbial activity, and improves soil structure.

[0070] The secondary framework 5, combined with vegetation, creates a landscape effect that blends nature and human elements, enhancing the ecological value of the slope.

[0071] Both the top inlay 4 and the main connecting plate 22 are segmented structures that are slidably connected by the second insert O and the second slot P. Through the sliding engagement of the second insert O and the second slot P, the top inlay 4 can extend and retract in the left and right directions, and the main connecting plate 22 can extend and retract in the up and down directions. In this way, when the anchor plate 21 presses the top inlay 4 and the main connecting plate 22, they can adaptively adjust their own lengths. Furthermore, since there is friction between the top inlay 4, the main connecting plate 22 and the roadbed slope, and there is also friction between the second insert O and the second slot P, and the inclined surfaces will generate a component force pointing towards the roadbed slope after mutual compression, the friction can keep the lengths of the two after adaptive adjustment. On the one hand, this can improve the allowable error value during the assembly process, and on the other hand, it can provide a margin when the protective structure expands and contracts with heat to avoid cracks in the protective structure.

[0072] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0074] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0075] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0076] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A roadbed slope protection structure, characterized in that: It includes anchor bolts (1), main frame (2), bottom edging (3) and top edging (4). The anchor rod (1) is anchored in the roadbed slope. The main frame (2) is set as multiple sets that extend vertically and are distributed in parallel. Each main frame (2) includes an anchor plate (21) and a main connecting plate (22). The anchor plate (21) and the main connecting plate (22) are vertically staggered in sequence, and both vertical ends of the main frame (2) are the anchor plate (21). Both the bottom inlay (3) and the top inlay (4) are configured as multiple. The two horizontal ends of the bottom inlay (3) are spliced ​​to the left and right sides of the two horizontally adjacent bottom anchor plates (21). The two horizontal ends of the top inlay (4) are spliced ​​to the left and right sides of the two horizontally adjacent top anchor plates (21). The anchor plate (21) applies a force toward the roadbed slope to the main connecting plate (22), the bottom edge (3), and the top edge (4) to which it is spliced; In a set of main frames (2), the opposite ends of the anchor plate (21) and the main connecting plate (22) are a first inclined surface (A) and a second inclined surface (B) that fit together, and the first inclined surface (A) corresponding to the anchor plate (21) extends from the side away from the roadbed slope toward the main connecting plate (22) that it is spliced ​​with. It also includes multiple sets of sub-frames (5), the two ends of the sub-frames (5) correspond to the left and right sides of two horizontally adjacent anchor plates (21) except for the anchor plates (21) at the vertical ends. Both ends of the bottom edging (3) and both ends of the sub-frame (5) extend out first inserts (G). The anchor plate (21) has a first slot (H) on the side wall facing the roadbed slope. The first slot (H) is open on the side facing the roadbed slope. The first insert (G) can match the first slot (H). The first insert (G) and the first slot (H) are respectively formed with a third inclined surface (I) and a fourth inclined surface (J) that can fit together. The lower ends of the third inclined surface (I) and the fourth inclined surface (J) are inclined away from the roadbed slope so that the bottom edge (3) and the sub-frame (5) can slide downward under the pressure of the anchor plate (21) and adaptively fit the third inclined surface (I) and the fourth inclined surface (J).

2. The roadbed slope protection structure as described in claim 1, characterized in that: A first groove (D) and a first protrusion (C) are also formed on the first inclined surface (A) and the second inclined surface (B), respectively. The first protrusion (C) and the first groove (D) can fit together when the first inclined surface (A) and the second inclined surface (B) fit together, thereby restricting the degree of freedom of the first inclined surface (A) and the second inclined surface (B) to move laterally relative to each other.

3. The roadbed slope protection structure as described in claim 2, characterized in that: Each of the sub-frames (5) includes two horizontally spliced ​​arc plates (51), and the two far apart ends of the two arc plates (51) are spliced ​​with the corresponding two horizontally adjacent anchor plates (21).

4. The roadbed slope protection structure as described in claim 3, characterized in that: One of the two adjacent arc-shaped plates (51) extends laterally to form a protrusion (E), and the other is laterally recessed to form a concave portion (F). The protrusion (E) matches the concave portion (F), and when the protrusion (E) matches the concave portion (F), the degree of freedom of relative displacement of the planes of the two arc-shaped plates (51) extending in the front-back direction is restricted.

5. The roadbed slope protection structure as described in claim 4, characterized in that: The upper anchor plate (21) forms a fifth inclined surface (K) on the left and right sides, and the top edge (4) forms a sixth inclined surface (L) at both ends. The fifth inclined surface (K) can match the sixth inclined surface (L), and the side of the fifth inclined surface away from the roadbed slope extends towards the top edge (4) that it is spliced ​​with. The fifth inclined surface (K) and the sixth inclined surface (L) are respectively formed with a second groove (N) and a second protrusion (M) that can fit into each other, so as to restrict the degree of freedom of relative misalignment of the top inlay (4) and the anchor plate (21).

6. The roadbed slope protection structure as described in claim 5, characterized in that: The planting area is formed by the sub-frame (5) and the main frame (2), the bottom edging (3), the sub-frame (5) and the main frame (2), and the top edging (4), the sub-frame (5) and the main frame (2); It also includes frames (6) distributed within the planting area, in which vegetation is planted.

7. The roadbed slope protection structure as described in claim 6, characterized in that: The top inlay (4) and the main connecting plate (22) are both segmented structures that are slidably connected along the corresponding length direction by the second insert (O) and the second slot (P), so that the top inlay (4) can extend and retract in the left and right direction, and the main connecting plate (22) can extend and retract in the up and down direction.

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