Reinforced roadbed end anchoring structure and construction method

Abstract

The invention relates to the technical field of roadbed anchoring, and discloses a reinforced roadbed end anchoring structure and a construction method.The reinforced roadbed end anchoring structure comprises a plurality of anchoring assemblies, each anchoring assembly is composed of a first connecting piece and a second connecting piece, and one end of each first connecting piece is provided with a fixing part connected with a geogrid; one end of the first connecting piece is fixedly connected with the fixing part, the other end of the first connecting piece is fixedly connected with the second connecting piece, an included angle is formed between the second connecting piece and the first connecting piece, and the second connecting piece is suitable for being arranged in a roadbed soil layer. Compared with an existing reverse wrapping type anchoring structure, the fixing part of the first connecting piece can be conveniently and firmly connected with the geogrid, complex manual reverse wrapping operation is not needed, and construction smoothness is improved; dependence on the professional degree of workers is reduced, and the risk of misoperation is reduced. Meanwhile, the second connecting piece which is arranged at an included angle and is suitable for being arranged in the roadbed soil layer can be completely embedded into the filled soil, and compared with a reverse wrapping part, the friction coefficient can be remarkably increased, the anchoring effect is enhanced, and the overall stability of the reinforced roadbed is powerfully guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of subgrade anchoring, and particularly relates to a reinforced subgrade end anchoring structure and a construction method thereof. Background Art

[0002] For a road subgrade located on a soft soil foundation, a reinforced subgrade is often adopted due to insufficient overall stability. A reinforced subgrade can effectively connect and fix the reinforcing material with the subgrade soil, enabling the reinforcing material to better exert a restraining effect on the soil and restricting the lateral displacement and deformation of the soil. In a reinforced subgrade, the reinforcing material bears the tensile stress of the soil. Usually, an anchoring structure is arranged at the end of the reinforcing material to provide sufficient uplift resistance and prevent the reinforcing material from being pulled out of the soil.

[0003] In the prior art, an anchoring method of the reverse wrapping type is often adopted. Specifically, the end of the reinforcing material is folded and wrapped along the subgrade slope or a specific direction for a certain length, and then it is compacted and fixed by means such as filling. During the construction process, mechanical compaction requires special personnel to perform the reverse wrapping operation, which not only affects the construction fluency but also highly depends on the professionalism of the workers. Once the operation is improper, the reliability of the anchoring will be reduced. Moreover, the reverse wrapping part is in direct contact with the upper-layer reinforcing material and cannot be completely embedded in the filling soil, resulting in a reduction in the friction coefficient and a significant weakening of the anchoring effect, posing a threat to the overall stability of the reinforced subgrade. Summary of the Invention

[0004] In view of this, the present invention provides a reinforced subgrade end anchoring structure and a construction method thereof to solve the problems that the anchoring structure of the reverse wrapping type in the prior art is complex in construction and cannot be completely embedded in the filling soil.

[0005] In a first aspect, the present invention provides a reinforced subgrade end anchoring structure, including:

[0006] A plurality of anchoring components, the anchoring components are arranged at the slope on either side of the road and are spaced along the length direction of the slope. The anchoring components are composed of a first connecting piece and a second connecting piece. One end of the first connecting piece is provided with a fixing part for connecting with a geogrid, and the other end is fixedly connected with the second connecting piece. The second connecting piece is arranged at an angle with the first connecting piece, and the angle is the same as the slope angle on both sides of the road, and the second connecting piece is adapted to be placed in the subgrade soil layer.

[0007] Optionally, it further includes a plurality of first stabilizing members, one end of the first stabilizing member is fixedly connected with the first connecting piece, and the other end is fixedly connected with the second connecting piece to form a triangular structure.

[0008] Optionally, it further includes a plurality of second stabilizing members, and the plurality of second stabilizing members are respectively arranged at intervals along the inclined direction or the horizontal extension direction of the slope, and are fixedly connected at the intersection with the first connecting member or the second connecting member.

[0009] Optionally, the included angle ranges from 45° to 65°.

[0010] Optionally, the cross-section of the anchoring assembly is circular, including a main anchor and an auxiliary anchor, the diameter of the auxiliary anchor is set to be smaller than that of the main anchor, and at least one auxiliary anchor is arranged between two adjacent main anchors.

[0011] Optionally, the anchoring assemblies are arranged in pairs and are symmetrically arranged at the slopes on both sides of the road respectively.

[0012] Optionally, both ends of the road along the length direction are set as the main anchors.

[0013] Optionally, the fixing part is a U-shaped hook formed by bending the end of the first connecting member away from the second connecting member, and the U-shaped hook is adapted to be hooked on the geogrid.

[0014] Optionally, a geotextile is arranged inside the included angle of the plurality of anchoring assemblies at any side slope of the road.

[0015] Beneficial effects

[0016] A reinforced subgrade end anchoring structure provided by the present invention includes a plurality of anchoring assemblies, the anchoring assemblies are arranged at the slopes on either side of the road and are arranged at intervals along the length direction of the slope, the anchoring assemblies are composed of a first connecting member and a second connecting member, one end of the first connecting member is provided with a fixing part connected to the geogrid, the other end is fixedly connected to the second connecting member, the second connecting member is arranged at an included angle with the first connecting member, and the included angle is consistent with the slope angles on both sides of the road, and the second connecting member is adapted to be placed in the subgrade soil layer. Compared with the existing reverse wrapping type anchoring structure, the fixing part of the first connecting member in the reinforced subgrade end anchoring structure provided by the present invention can be conveniently and firmly connected to the geogrid, without complicated manual reverse wrapping operation, improving the construction fluency, reducing the dependence on the professionalism of workers, and reducing the risk of improper operation. At the same time, the second connecting member arranged at an included angle with the first connecting member and adapted to be placed in the subgrade soil layer can be completely embedded in the fill soil. Compared with the reverse wrapping part, it can significantly increase the pseudo-friction coefficient, enhance the anchoring effect, and effectively ensure the overall stability of the reinforced subgrade.

[0017] In a second aspect, the present invention also provides a construction method for a reinforced subgrade end anchoring structure, including the following steps:

[0018] Lay geogrid at a predetermined position on the road; arrange multiple said anchoring components at intervals along the length direction of the road on the slopes on both sides of the road, and snap the fixing part into the geogrid; lay a subgrade soil layer on the geogrid; compact the subgrade soil layer so that the anchoring components are stably fixed in the subgrade soil layer. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of a reinforced subgrade end anchoring structure according to an embodiment of the present invention;

[0021] Figure 2 Side view schematic diagram of the anchoring component according to an embodiment of the present invention;

[0022] Figure 3 Structural schematic diagram of the reinforced subgrade end anchoring structure and the geogrid according to an embodiment of the present invention;

[0023] Figure 4 Structural schematic diagram of the anchoring component installed on the road according to an embodiment of the present invention;

[0024] Figure 5 Structural schematic diagram of the reverse wrapping anchoring structure installed on the road in the prior art.

[0025] Description of the Reference Numerals:

[0026] 1. Anchoring component; 11. First connecting piece; 12. Second connecting piece; 13. Fixing part; 2. First stabilizing piece; 3. Second stabilizing piece; 4. Main anchor; 5. Auxiliary anchor; 6. Geotextile; 7. Geogrid; 8. Reverse wrapping anchoring structure. Detailed Embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] The following describes the embodiments of the present invention in conjunction with Figures 1 to 5 , describing the embodiments of the present invention.

[0029] According to an embodiment of the present invention, on the one hand, a reinforced subgrade end anchoring structure is provided, including:

[0030] A plurality of anchoring components 1 are arranged at the slope on either side of the road and are spaced along the length direction of the slope. The anchoring component 1 is composed of a first connecting piece 11 and a second connecting piece 12. One end of the first connecting piece 11 is provided with a fixing part 13 connected to the geogrid 7, and the other end is fixedly connected to the second connecting piece 12. The second connecting piece 12 is arranged at an angle with the first connecting piece 11, and the angle is the same as the slope angles on both sides of the road. Moreover, the second connecting piece 12 is adapted to be placed in the subgrade soil layer.

[0031] It should be noted that the slope refers to the slope surface with a certain gradient made on both sides of the subgrade to ensure the stability of the subgrade.

[0032] It should be noted that the subgrade soil layer is the basic part of the road structure. It directly bears various loads generated by the road surface structure and vehicle driving, and transfers these loads to the deeper foundation. In the reinforced subgrade, the subgrade soil layer and the reinforcing material work together. By reasonably arranging the anchoring components 1, the reinforcing material and the subgrade soil layer are closely combined, which can effectively limit the lateral displacement and deformation of the soil body, enhance the overall bearing capacity and stability of the subgrade, and ensure the safety performance of the road during long-term use.

[0033] It should be noted that the geogrid 7 is the reinforcing material in the reinforced subgrade. It is usually made of high-strength synthetic materials and has a regular grid-like structure. This structure endows the geogrid 7 with good tensile properties and can bear the tensile stress transmitted by the soil body.

[0034] It should be noted that in this embodiment, in order to improve the integrity of the anchoring component 1, the first connecting piece 11 and the second connecting piece 12 are formed by bending the same steel bar at a specific position to form an angle. In other embodiments, the first connecting piece 11 and the second connecting piece 12 can also be fixed by welding or bolt connection to form the anchoring component 1. In addition, to improve the anti-corrosion performance, both the first connecting piece 11 and the second connecting piece 12 are treated with asphalt coating for anti-corrosion or hot-dip galvanized for anti-corrosion.

[0035] In addition, it should be noted that for the traditional reverse wrapping and anchoring structure 8, since the length of the reverse wrapping part shall not be less than 2m, plus the laying spacing of 0.5m vertically, an additional 2.5m of reinforcing material needs to be added on one side, and even 5m on both sides. This not only causes a large waste of reinforcing material and increases the cost, but also is extremely disadvantageous in terms of construction space occupation, bringing many inconveniences to on-site operations. On the contrary, in this embodiment, the overall height of the anchoring assembly 1 is controlled within 0.3m - 0.5m, and the length of the first connecting piece 11 is controlled within 0.25m - 0.35m. It not only greatly reduces the material consumption and cost, but also greatly saves the construction space, making the construction process more convenient and efficient. While ensuring or even improving the anchoring effect, it strongly promotes the development of the reinforced subgrade project construction towards the direction of economy, efficiency, and quality.

[0036] The reinforced subgrade end anchoring assembly 1 provided in this embodiment, compared with the existing reverse wrapping and anchoring structure 8 (refer to Figure 5 ), the fixing part 13 of the first connecting piece 11 can be conveniently and firmly connected to the geogrid 7, without complex manual reverse wrapping operations, improving the construction smoothness, reducing the dependence on the professionalism of workers, and reducing the risk of improper operations. At the same time, the second connecting piece 12 arranged at an angle with the first connecting piece 11 and suitable for being placed in the subgrade soil layer can be completely embedded in the fill soil. Compared with the reverse wrapping part, it can significantly increase the pseudo-friction coefficient and enhance the anchoring effect, effectively ensuring the overall stability of the reinforced subgrade.

[0037] Furthermore, it further includes a plurality of first stabilizing members 2. One end of the first stabilizing member 2 is fixedly connected to the first connecting piece 11, and the other end is fixedly connected to the second connecting piece 12 to form a triangular structure.

[0038] It is easy to understand that the setting of the first stabilizing member 2 enables the first stabilizing member 2, the first connecting piece 11, and the second connecting piece 12 to form a triangular structure, and the triangle has good stability. It enables the first stabilizing member 2 to further strengthen the connection strength between the first connecting piece 11 and the second connecting piece 12. In the complex stress environment of the soil body, it can effectively prevent the relative displacement or deformation of the two due to stress, thereby ensuring the overall reliability of the anchoring assembly 1. When facing situations such as vehicle dynamic loads and uneven settlement of the foundation soil body, the first stabilizing member 2 can keep the anchoring assembly 1 in a stable state all the time, ensuring that the coordinated work between the geogrid 7 and the subgrade soil layer is not affected, and greatly improving the anchoring effect at the end of the reinforced subgrade.

[0039] It should be noted that during the actual construction process, a metal rod or a high-strength synthetic material rod that is compatible with the material of the anchoring assembly 1 and has sufficient strength can be selected as the first stabilizing member 2. In this embodiment, reinforcing bars are used as the first stabilizing member 2. In other embodiments, the first stabilizing member 2 with other materials and specifications can be selected according to the on-site situation. Here, the material and specification of the first stabilizing member 2 are not restricted.

[0040] Specifically, in this embodiment, the first stabilizing member 2 is fixedly connected to the first connecting member 11 and the second connecting member 12 by welding, preferably fixed at the midpoints of the first connecting member 11 and the second connecting member 12. Of course, the fixing position of the first stabilizing member 2 can also be adjusted according to requirements, or another first stabilizing member 2 can be arranged in parallel at a position far from the included angle. In other embodiments, bolt connection or wire tying can also be used for fixing. Here, the specific fixing method is not limited.

[0041] Furthermore, it further includes a plurality of second stabilizing members 3. The plurality of second stabilizing members 3 are respectively arranged at intervals along the inclined direction or the horizontal extension direction of the slope, and are fixedly connected at the intersection with the first connecting member 11 or the second connecting member 12.

[0042] It is easy to understand that the second stabilizing members 3 can effectively connect a plurality of anchoring assemblies 1 into a whole to form a grid structure. The size of a single grid is controlled within 100 mm × 100 mm, enhancing the cooperative working ability of the anchoring system. When a certain anchoring assembly 1 is subjected to a large soil force, through the second stabilizing members 3, the force can be transmitted and dispersed among the plurality of anchoring assemblies 1, avoiding the failure of a single anchoring assembly 1 due to excessive load, thereby improving the overall stability of the anchoring area at the end of the reinforced subgrade. When dealing with complex and variable foundation deformations, the second stabilizing members 3 can ensure the integrity of the anchoring assemblies 1, prevent a chain reaction caused by the displacement of local anchoring assemblies 1, and ensure the normal service performance of the reinforced subgrade.

[0043] Specifically, in this embodiment, a total of 7 second stabilizing members 3 are provided according to the lengths of the first connecting member 11 and the second connecting member 12. The 7 second stabilizing members 3 are arranged at intervals along the extension directions of the first connecting member 11 and the second connecting member 12, and 1 second stabilizing member 3 is arranged at the vertex of the included angle. The evenly spaced arrangement can enable each anchoring assembly 1 to be evenly stressed in the length direction. When the soil generates lateral displacement or is subjected to forces in other directions, the second stabilizing members 3 at each interval can promptly disperse the force to the adjacent anchoring assemblies 1, avoiding the occurrence of stress concentration points, thereby effectively improving the stability of the entire anchoring system in the length direction. Of course, in other embodiments, other numbers of second stabilizing members 3, such as 2, 3, or more, can be selected according to the actual lengths of the first connecting member 11 and the second connecting member 12. Here, the number is not specifically limited.

[0044] It should be noted that during the actual construction process, a metal rod or a high-strength synthetic material rod that is compatible with the material of the anchoring assembly 1 and has sufficient strength can be selected as the second stabilizing member 3. In this embodiment, The steel bars are used as the second stabilizing member 3. In other embodiments, second stabilizing members 3 made of other materials and specifications can be selected according to the on-site conditions. Here, the materials and specifications of the first stabilizing member 2 are not limited.

[0045] Specifically, in this embodiment, the second stabilizing member 3 is fixedly connected to the anchoring assembly 1 by welding respectively. In other embodiments, bolt connection or wire tying can also be used for fixing. Here, the specific fixing method is not limited.

[0046] Furthermore, the included angle ranges from 45° to 65°.

[0047] It should be noted that when selecting the included angle range of the first connecting member 11 and the second connecting member 12, it is mainly based on the length of the second connecting member 12, the thickness of the subgrade soil layer, and the principle of optimal force and best anchoring effect in the subgrade soil layer. When the included angle is selected as 45°, it can better balance the lateral and vertical forces of the soil on the two connecting members, making the anchoring assembly 1 more efficient in transmitting and dispersing stress, especially suitable for the situation where the horizontal displacement and vertical settlement of the soil layer are relatively balanced. When the included angle is selected as 65°, it can enhance the resistance to the vertical load of the soil to a certain extent. When the subgrade mainly bears a large vertical pressure and the anchoring assembly 1 is required to provide strong vertical support, this angle can play an advantage to ensure the stability and reliability of the end anchoring of the reinforced subgrade.

[0048] Furthermore, the cross-section of the anchoring assembly 1 is circular, including a main anchor 4 and an auxiliary anchor 5. The diameter of the auxiliary anchor 5 is set smaller than that of the main anchor 4, and at least one auxiliary anchor 5 is arranged between two adjacent main anchors 4.

[0049] It should be noted that the main anchor 4 has a larger diameter and can provide a strong anchoring force to bear the main tensile stress of the soil. The auxiliary anchor 5 can be filled between adjacent main anchors 4 to further refine the anchoring area, enhance the contact area between the soil and the anchoring assembly 1, and improve the overall stability of the soil. At the same time, through the cooperation of the two types of anchoring assemblies 1 with different diameters, the material use is optimized, and the cost is reduced on the premise of ensuring the anchoring effect.

[0050] Specifically, in this embodiment, the main anchor 4 is selected to be made of steel bars, and the auxiliary anchor 5 is selected to be made of steel bars. Of course, in other embodiments, main anchors 4 and auxiliary anchors 5 with appropriate structures and materials can also be selected according to the actual construction situation. If necessary for on-site construction, even multiple specifications of auxiliary anchors 5 can be selected.

[0051] Furthermore, the anchoring assemblies 1 are arranged in pairs and are symmetrically arranged on the slopes on both sides of the road respectively.

[0052] It is easy to understand that setting the anchoring assembly 1 on one side can, to a certain extent, restrain the lateral displacement and deformation of the soil on one side of the road. It is applicable to the situation where the soil stability on one side of the road is relatively good, or only anchoring construction can be carried out on one side due to site conditions, and can ensure the stability of the subgrade on that side within a certain range. However, when the anchoring assemblies 1 are arranged in pairs on both sides of the road, a more comprehensive and balanced constraint system can be formed for the soil under the road. The two-sided anchoring assemblies 1 work together to better resist soil stresses from different directions. Whether it is the change in the force on one side of the soil caused by the eccentric load during vehicle driving or the uneven deformation of the soil caused by geological condition differences, the two-sided anchoring can effectively cope with it, improve the overall stability of the reinforced subgrade, and ensure the long-term safe and stable operation of the road under complex working conditions.

[0053] Furthermore, the two ends of the road along the length direction are provided with main anchor members 4.

[0054] Furthermore, the fixing part 13 is a U-shaped hook formed by bending the end of the first connecting member 11 away from the second connecting member 12, and the U-shaped hook is suitable for hooking on the geogrid 7.

[0055] It is easy to understand that the structure of the U-shaped hook is simple and practical. It can be conveniently hooked on the geogrid 7 without complex installation tools or additional fixing parts, improving the construction efficiency. At the same time, the contact area between the U-shaped hook and the geogrid 7 is relatively large, which can effectively disperse the tensile stress, enhance the firmness of the connection, ensure the close connection between the geogrid 7 and the anchoring assembly 1, and better play the role of restraining the soil.

[0056] In an alternative embodiment, a magnetic suction type hook can be used as the fixing part 13, and mutually matching magnetic components are arranged at the end of the first connecting member 11 and the corresponding position of the geogrid 7, and the connection is realized by magnetic adsorption. This method is more applicable in some cases where high requirements are placed on the construction speed and convenience, and the material of the geogrid 7 is suitable for magnetic adsorption, and can complete the installation quickly and improve the construction progress. In other embodiments, the fixing part 13 can also be selected in the form of tying with steel bars or ropes to fix the first connecting member and the geogrid.

[0057] Furthermore, a geotextile 6 is arranged inside the included angle of multiple anchoring assemblies 1 at the slope of any side of the road.

[0058] It is easy to understand that the geotextile 6 has good filtering performance, which can prevent soil particles from being washed away under the action of water flow, maintain the stability of the soil structure, and avoid affecting the anchoring effect of the anchoring component 1 due to the migration of soil particles. At the same time, it can also play an isolation role, prevent the mixing of different soil layers, maintain the original mechanical properties of each soil layer, and enhance the overall stability of the roadbed. In addition, considering the lateral drainage requirements of the roadbed soil, a permeable geotextile 6 can be selected. It can allow water to pass through, so that the excess water in the roadbed soil can be smoothly discharged through the geotextile 6, avoiding the influence of water accumulation on the soil stability and the efficacy of the anchoring component 1.

[0059] According to an embodiment of the present invention, on the other hand, a construction method of a reinforced roadbed end anchoring component is also provided, including the following steps:

[0060] Lay the geogrid 7 at a predetermined position on the road; arrange a plurality of anchoring components 1 at intervals along the length direction of the road on the slopes on both sides of the road, and snap the fixing part 13 into the geogrid 7; lay the roadbed soil layer on the geogrid 7; compact the roadbed soil layer to stably fix the anchoring component 1 in the roadbed soil layer.

[0061] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A reinforced roadbed end anchoring structure, characterized in that: include: A plurality of anchoring assemblies (1), the anchoring assemblies (1) being arranged at a side slope on either side of a road and being arranged at intervals along the length direction of the side slope, the anchoring assemblies (1) being composed of a first connecting member (11) and a second connecting member (12), one end of the first connecting member (11) being provided with a fixing portion (13) connected to a geogrid (7), and the other end being fixedly connected to the second connecting member (12), the second connecting member (12) being arranged at an angle with the first connecting member (11), the angle being consistent with the angle of the side slopes on both sides of the road, and the second connecting member (12) being suitable for being placed in a roadbed soil layer.

2. The reinforced roadbed end anchoring structure according to claim 1, characterized in that: It also comprises a plurality of first stabilizing members (2), wherein one end of the first stabilizing member (2) is fixedly connected to the first connecting member (11), and the other end of the first connecting member (2) is fixedly connected to the second connecting member (12), so as to form a triangular structure.

3. The reinforced roadbed end anchoring structure according to claim 2, characterized in that: It also comprises a plurality of second stabilizing members (3), which are arranged at intervals along the inclination direction or the horizontal extension direction of the slope and are fixedly connected at the intersection with the first connecting member (11) or the second connecting member (12).

4. The reinforced roadbed end anchoring structure according to any one of claims 1 to 3, characterized in that: The angle range is 45° to 65°.

5. The reinforced roadbed end anchoring structure according to any one of claims 1 to 3, characterized in that: The cross section of the anchor assembly (1) is circular, and comprises a main anchor (4) and an auxiliary anchor (5); the diameter of the auxiliary anchor (5) is smaller than the diameter of the main anchor (4); and at least one auxiliary anchor (5) is arranged between two adjacent main anchors (4).

6. The reinforced roadbed end anchoring structure according to claim 5, characterized in that: The anchoring components (1) are arranged in pairs and are symmetrically arranged at the side slopes on both sides of the road.

7. The reinforced roadbed end anchoring structure according to claim 6, characterized in that: The main anchoring members (4) are arranged at both ends of the road in the length direction.

8. The reinforced roadbed end anchoring structure according to any one of claims 1 to 3, characterized in that: The fixing portion (13) is a U-shaped hook formed by bending the end of the first connecting member (11) away from the second connecting member (12), and the U-shaped hook is suitable for hooking on the geogrid (7).

9. The reinforced roadbed end anchoring structure according to any one of claims 1 to 3, characterized in that: A geotextile (6) is arranged inside the included angle of a plurality of the anchoring assemblies (1) at the road slope on either side.

10. A construction method for the reinforced roadbed end anchoring structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: A geogrid (7) is laid at a predetermined position on a road; a plurality of anchoring assemblies (1) are arranged at intervals along the length direction of the road at the side slopes on both sides of the road, and the fixing portion (13) is clamped in the geogrid (7); a roadbed soil layer is laid on the geogrid (7); and the roadbed soil layer is compacted so that the anchoring assemblies (1) are stably fixed in the roadbed soil layer.

Images