A method for maintaining a highway pavement

Abstract

The application provides a highway pavement maintenance method, and belongs to the technical field of highway maintenance, which comprises the following steps: using a first graphic mark at a damaged position of a highway pavement, digging downward according to the first graphic to form a reinforced foundation pit; using a second graphic to cover the first graphic on the highway pavement, performing surface damage treatment on the highway pavement in the second graphic to form a ring-shaped reinforcing connection layer; arranging a first support and a second support in the reinforced foundation pit; filling base material into the reinforced foundation pit to form a new base layer; installing a ring-shaped reinforcing structure on the reinforcing connection layer, and the center position of the reinforcing structure is recessed downward to form a reinforcing connection part, which enters the reinforced foundation pit and is located above the new base layer. The highway pavement maintenance method provided by the application greatly improves the bearing capacity and strength of the repaired damaged position, and the repaired surface layer is not prone to secondary cracking, thereby ensuring long-term effectiveness of highway maintenance work.

Description

Technical Field

[0001] This invention belongs to the field of highway maintenance technology, and more specifically, relates to a method for highway pavement maintenance. Background Technology

[0002] Highway maintenance refers to the upkeep and maintenance of highways. Maintenance focuses on the entire process from the time a highway is built and opened to traffic, while repair focuses on restoring damaged sections. Good highway maintenance keeps highways and their facilities in good condition, promptly repairs damaged parts, ensures comfortable and smooth driving, and also makes highway travel safer, protecting people's lives and property. When cracks appear in a highway, workers remove the surface layer of the cracked area, clean it, and then fill it with a surface layer material. However, this method of highway maintenance is highly prone to causing cracks to reappear, or even worsen, leading to the failure of highway maintenance. Summary of the Invention

[0003] The purpose of this invention is to provide a road surface maintenance method to solve the technical problem that road maintenance operations after cracks are easily prone to re-cracking, or even more serious cracks, leading to road maintenance failure.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a method for highway pavement maintenance, comprising:

[0005] S1: Use a first graphic mark at the location of the road surface damage, the first graphic covering the damaged location and the area of ​​the first graphic being larger than the area of ​​the damaged location; dig downwards according to the first graphic to 15-20cm below the surface layer to form a reinforcement pit;

[0006] S2: A second graphic is used to cover the first graphic on the road surface, and the area of ​​the second graphic is larger than the area of ​​the first graphic; the road surface within the second graphic is subjected to surface destruction treatment to form a ring-shaped reinforcing connection layer; excavation is carried out from the area on the inner wall of the reinforced foundation pit that is lower than the road surface layer, so that the cross-sectional area of ​​the reinforced foundation pit is greater than or equal to the cross-sectional area of ​​the second graphic.

[0007] S3: A plurality of first support members are arranged in a ring within the reinforced foundation pit, with the upper and lower ends of the first support members supporting the top and bottom surfaces of the reinforced foundation pit, respectively. The first support members are located directly below the reinforcing connection layer. A plurality of second support members are arranged in a ring within the reinforced foundation pit, with the plurality of second support members located inside the plurality of first support members. The lower end of the second support member is supported on the bottom surface of the reinforced foundation pit, and the upper end is located at the junction of the reinforcing connection layer and the reinforced foundation pit.

[0008] S4: Fill the reinforced foundation pit with base material until the upper end of the base material is flush with the lower end of the surface layer to form a new base layer; install an annular reinforcing structure on the reinforcing connection layer, and the center of the reinforcing structure is recessed downward to form a reinforcing connection part, which enters the reinforced foundation pit and is located above the new base layer;

[0009] S5: Fill the reinforced foundation pit and the reinforced connection layer with surface material until it is flush with the undamaged road surface.

[0010] In one possible implementation, both the upper and lower ends of the first support member and the second support member are provided with load-bearing plates.

[0011] In one possible implementation, both the first support member and the second support member are provided with length adjustment members, which are used to adjust the bearing plate to abut against the top and bottom surfaces of the reinforced foundation pit.

[0012] In one possible implementation, prior to step S3, a gravel layer is laid on the bottom surface of the reinforced pit; the bearing plates at the lower ends of the first support member and the second support member are both supported on the gravel layer.

[0013] In one possible implementation, when forming the new base layer in step S4, a plurality of connecting rods are prefabricated and installed within the new base layer, the connecting rods being arranged longitudinally; the upper end of each connecting rod protrudes above the new base layer; the reinforcing connection portion is provided with a plurality of connecting holes, each connecting hole corresponding to a plurality of connecting rods; the upper end of each connecting rod passes through the corresponding connecting hole and is fixedly connected to the reinforcing connection portion; the plurality of connecting rods are divided into multiple groups, and the plurality of connecting rods in each group are arranged in a ring; the multiple groups of connecting rods are coaxially arranged, and the radial dimension of the multiple groups of connecting rods gradually increases.

[0014] In one possible implementation, both the reinforcing structure and the reinforcing connection are suspended; the reinforcing structure is located above the reinforcing connection layer and has a filling gap between it and the surface of the reinforcing connection layer; the reinforcing connection is located above the new base layer and below the surface of the reinforcing connection layer, and has a filling gap between it and the new base layer.

[0015] In one possible implementation, the reinforcing connection is provided with a plurality of through holes for filling the surface material, and the plurality of through holes are arranged in a ring at intervals; the plurality of connecting rods are divided into two groups, and the plurality of through holes are located between the two groups of connecting rods.

[0016] In one possible implementation, when the new base layer is formed in step S4, a plurality of connecting rods are fixedly provided at the lower end of the reinforcing connection portion. The plurality of connecting rods penetrate downward into the new base layer and are fixedly connected to the new base layer. The plurality of connecting rods are divided into multiple groups, and the plurality of connecting rods in each group are arranged in a ring. The multiple groups of connecting rods are coaxially arranged, and the radial dimension of the multiple groups of connecting rods gradually increases.

[0017] In one possible implementation, the thickness of the reinforcing connection layer is one-half to two-thirds of the surface layer, and the surface of the reinforcing connection layer is provided with a plurality of recesses, and the reinforcing structure is provided with a plurality of protrusions that cooperate with the recesses; the reinforcing structure is provided with a thickened portion located above the reinforcing connection layer.

[0018] In one possible implementation, the inner wall of the reinforced foundation pit is an inclined surface, and the longitudinal section of the reinforced foundation pit is a trapezoid with a smaller top and a larger bottom.

[0019] The beneficial effects of the highway pavement maintenance method provided by this invention are as follows: Compared with the prior art, in the highway pavement maintenance method of this invention, during operation, a first graphic is used to mark the damaged location of the crack in the highway pavement, and a certain depth is excavated along the first graphic to completely remove the surface layer at the damaged location, forming a reinforcement pit below the damaged location; then, a second graphic is used to surround the reinforcement pit, and a portion of the undamaged highway pavement is excavated along the second graphic to form a reinforcing connection layer. The thickness of this reinforcing connection layer is less than the thickness of the surface layer, which is used to make the final filled surface layer material more firmly connected between the old and new surface layers; at the same time, the reinforcement pit is widened to increase its width; the reinforcement pit also plays a supporting role for the reinforcing connection layer; within the reinforcement pit... The first and second support members are installed to support the connection between the reinforced connection layer and the old and new surface layers. Base material is then filled into the reinforced foundation pit to form a new base layer. A ring-shaped reinforcing structure is then installed on the reinforced connection layer, with the reinforcing connection extending directly above the new base layer. Surface material is then filled into the reinforced foundation pit and the reinforced connection layer to form a new surface layer. The reinforcing structure and the reinforcing connection integrate the new and old surface layers, creating a large connection area. This method, utilizing the reinforced foundation pit, the first and second support members, the reinforced connection layer, the reinforcing structure, and the reinforcing connection, not only maintains the damaged area but also significantly improves the load-bearing capacity and strength of the repaired area. The repaired surface layer is less prone to secondary cracking, ensuring the long-term effectiveness of highway maintenance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the highway pavement maintenance method provided in an embodiment of the present invention;

[0022] Figure 2 A top view of the highway pavement maintenance method provided in an embodiment of the present invention;

[0023] Figure 3 This is a structural schematic diagram of a road surface maintenance method without base layer and surface layer materials provided in an embodiment of the present invention.

[0024] Figure 4 A top view of a road surface maintenance method in which the first and second graphics are circular, provided for an embodiment of the present invention;

[0025] Figure 5 The first and second figures provided for embodiments of the present invention are top views of a road surface maintenance method that is square.

[0026] The following are the labeling elements in the figure:

[0027] 10. First shape; 11. Reinforced foundation pit; 12. Second shape; 13. Reinforced connection layer; 14. First support member; 15. Second support member; 16. New base layer; 17. Reinforced structure; 18. Reinforced connection part; 19. Bearing plate; 20. Length adjustment part; 21. Gravel layer; 22. Connecting rod; 23. Connecting hole; 24. Filling spacing; 25. Through hole; 26. Pits; 27. Thickened part; 28. Inclined surface. Detailed Implementation

[0028] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0031] Furthermore, 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 technical features indicated. Thus, 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.

[0032] Please see Figures 1 to 5 The present invention will now describe the method for maintaining a highway pavement. A method for maintaining a highway pavement includes:

[0033] S1: Mark the damaged location of the highway pavement with the first graphic 10, which covers the damaged location and has an area larger than the damaged location; excavate downwards according to the first graphic 10 to 15-20cm below the surface layer to form a reinforcement pit 11;

[0034] S2: The second graphic 12 is used to cover the first graphic 10 on the road surface, and the area of ​​the second graphic 12 is larger than the area of ​​the first graphic 10; the road surface within the second graphic 12 is subjected to surface damage treatment to form a ring-shaped reinforcing connection layer 13; excavation is carried out from the area on the inner wall of the reinforced foundation pit 11 and below the road surface layer, so that the cross-sectional area of ​​the reinforced foundation pit 11 is greater than or equal to the cross-sectional area of ​​the second graphic 12.

[0035] S3: A plurality of first support members 14 are arranged in a ring within the reinforced foundation pit 11, with the upper and lower ends of the first support members 14 supporting the top and bottom surfaces of the reinforced foundation pit 11 respectively, and the first support members 14 being located directly below the reinforcing connection layer 13; a plurality of second support members 15 are arranged in a ring within the reinforced foundation pit 11, and the plurality of second support members 15 are located inside the plurality of first support members 14; the lower end of the second support member 15 is supported on the bottom surface of the reinforced foundation pit 11, and the upper end is located at the junction of the reinforcing connection layer 13 and the reinforced foundation pit 11;

[0036] S4: Fill the reinforced foundation pit 11 with base material until the upper end of the base material is flush with the lower end of the surface layer to form a new base layer 16; install an annular reinforcing structure 17 on the reinforcing connection layer 13, and the center of the reinforcing structure 17 is recessed downward to form a reinforcing connection part 18, which enters the reinforced foundation pit 11 and is located above the new base layer 16.

[0037] S5: Fill the reinforced foundation pit 11 and the reinforced connection layer 13 with surface material until it is flush with the undamaged road surface.

[0038] The highway pavement maintenance method provided by this invention, compared with the prior art, involves marking the damaged area of ​​the highway pavement with a first graphic 10 during operation, and digging down to a certain depth along the first graphic 10 to completely remove the surface layer at the damaged location, forming a reinforcement pit 11 below the damaged location; then, a second graphic 12 is set around the reinforcement pit 11, and a portion of the undamaged highway pavement is excavated along the second graphic 12, with the remaining portion forming a reinforcing connection layer 13. The thickness of the reinforcing connection layer 13 is less than the thickness of the surface layer, which is used to make the final filling surface layer material more firmly connected between the old and new surface layers; at the same time, the reinforcement pit 11 is widened to increase its width, so that the reinforcement pit 11 also provides support for the reinforcing connection layer 13; a first support member 14 and a second support member are installed in the reinforcement pit 11. Component 15 supports the connection between the reinforced connecting layer 13 and the new and old surface layers, and fills the reinforced foundation pit 11 with base material to form a new base layer 16. Then, a ring-shaped reinforcing structure 17 is installed on the reinforced connecting layer 13, and the reinforcing connection part 18 extends directly above the new base layer 16. Surface material is filled into the reinforced foundation pit 11 and the reinforced connecting layer 13 to form a new surface layer. The new surface layer is connected as a whole by the reinforcing structure 17 and the reinforcing connection part 18, and the new surface layer has a large connection area with the old surface layer. In this way, the reinforced foundation pit 11, the first support component 14, the second support component 15, the reinforced connecting layer 13, the reinforcing structure 17, and the reinforcing connection part 18 are used to maintain the damaged area, while also greatly improving the load-bearing capacity and strength of the repaired damaged area. The repaired surface layer is less prone to secondary cracking, ensuring the long-term effectiveness of highway maintenance.

[0039] The road surface within the second graphic 12 is subjected to surface damage treatment to a certain depth, and the remaining part forms a reinforcing connection layer 13. The reinforcing structure 17 is installed above the reinforcing connection layer 13 and below the road surface.

[0040] Please see Figure 1 and Figure 3As a specific embodiment of the highway pavement maintenance method provided by the present invention, the first support member 14 and the second support member 15 are provided with bearing plates 19 at their upper and lower ends. The lower bearing plate 19 is supported on the bottom surface of the reinforced foundation pit 11, so that the entire first support member 14 and the second support member 15 are placed stably and reliably in the reinforced foundation pit 11. The upper bearing plate 19 presses against the lower end surface of the undamaged surface layer from bottom to top. With the help of the first support member 14 and the bearing plate 19, the bearing capacity of the surface layer around the damaged location is enhanced and it is not easily damaged. With the help of the second support member 15 and the bearing plate 19 acting on the connection between the old and new surface layers, it is ensured that the location is not easily damaged by external forces. The first support member 14 is a rod-shaped structure, and the cross-sectional area of ​​the bearing plate 19 is larger than the cross-sectional area of ​​the first support member 14.

[0041] Please see Figure 1 and Figure 3 As a specific embodiment of the highway pavement maintenance method provided by the present invention, both the first support member 14 and the second support member 15 are provided with length adjusting members 20. The length adjusting members 20 are used to adjust the bearing plate 19 abutting against the top and bottom surfaces of the reinforced foundation pit 11. With the help of the length adjusting members 20, the length of the entire first support member 14 and the second support member 15 can be adjusted. After the first support member 14 and the second support member 15 are installed into the reinforced foundation pit 11, the length of the first support member 14 and the second support member 15 is adjusted, so that the bearing plate 19 at the upper and lower ends of the first support member 14 and the second support member 15 can form upper and lower supports more effectively and stably, and the support is more effective and firm. The length adjusting member 20 is a threaded connection, or the first support member 14 and the second support member 15 are both upper and lower rods, and the length adjusting member 20 is a shim installed between the upper and lower rods.

[0042] Please see Figure 1 and Figure 3 As a specific embodiment of the road surface maintenance method provided by the present invention, before step S3, a gravel layer 21 is laid on the bottom surface of the reinforced foundation pit 11; the bearing plate 19 at the lower end of the first support member 14 and the second support member 15 are both supported on the gravel layer 21, and the bearing plate 19 at the lower end is more stably supported by the gravel layer 21, so that it is not easy to cause a large degree of tilting.

[0043] Please see Figure 1 and Figure 3In a specific embodiment of the highway pavement maintenance method provided by the present invention, when forming the new base layer 16 in step S4, a plurality of connecting rods 22 are prefabricated and installed into the new base layer 16. The connecting rods 22 are arranged longitudinally. The upper end of the connecting rod 22 protrudes above the new base layer 16. The reinforcing connecting part 18 is provided with a plurality of connecting holes 23, and the plurality of connecting holes 23 correspond one-to-one with the plurality of connecting rods 22. The upper end of the connecting rod 22 passes through the corresponding connecting hole 23 and is fixedly connected to the reinforcing connecting part 18. The reinforcing structure 17 and the reinforcing connecting part 18 are connected to the new base layer 16 by means of the connecting rods 22. After the surface layer material is filled in to form a new surface layer, the new surface layer and the new base layer 16 are well connected by means of the reinforcing structure 17 and the reinforcing connecting part 18, so that the new surface layer can withstand greater external forces. Specifically, when the reinforcing connecting part 18 is installed, the connecting rod 22 is fitted into the corresponding connecting hole 23 and the connecting rod 22 is welded and fixed together with the reinforcing connecting part 18. Preferably, the multiple connecting rods 22 are divided into multiple groups, and the multiple connecting rods 22 in each group are arranged in a ring; the multiple groups of connecting rods 22 are coaxially arranged, and the radial dimension of the multiple groups of connecting rods 22 gradually increases; the setting of multiple groups of connecting rods 22 improves the connection reliability between the reinforcing structure 17, the reinforcing connection part 18 and the new base layer 16.

[0044] Please see Figure 1 and Figure 3 In a specific embodiment of the road surface maintenance method provided by the present invention, both the reinforcing structure 17 and the reinforcing connection 18 are suspended. The reinforcing structure 17 is located above the bottom surface of the reinforcing connection layer 13 and has a filling gap 24 between it and the surface of the reinforcing connection layer 13. The reinforcing connection 18 is located above the new base layer 16 and below the surface of the reinforcing connection layer 13, and has a filling gap 24 between it and the new base layer 16. In this way, after the surface layer material is filled, the surface layer material enters the filling gap 24, so that the upper and lower sides of the reinforcing structure 17 and the reinforcing connection 18 are in contact with the surface layer material, thereby further improving the strength and load-bearing capacity of the new surface layer by the reinforcing structure 17 and the reinforcing connection 18.

[0045] Please see Figure 1 and Figure 2 As a specific embodiment of the road surface maintenance method provided by the present invention, the reinforcing connection part 18 is provided with a plurality of through holes 25 for filling surface material, and the plurality of through holes 25 are arranged in a ring at intervals; the plurality of connecting rods 22 are divided into two groups, and the plurality of through holes 25 are located between the two groups of connecting rods 22; the surface material is filled into the reinforcing structure 17 and the reinforcing connection part 18 by means of the through holes 25; and the connection rods 22 are divided into two groups, and the plurality of through holes 25 are located between the two groups of connecting rods 22, so that the surface material is filled into the flow faster and more evenly.

[0046] Please see Figure 1and Figure 3 As a specific embodiment of the highway pavement maintenance method provided by the present invention, when forming the new base layer 16 in step S4, a plurality of connecting rods 22 are fixedly provided at the lower end of the reinforcing connecting part 18. The plurality of connecting rods 22 are inserted downward into the new base layer 16 and are fixedly connected to the new base layer 16. The plurality of connecting rods 22 are divided into multiple groups, and the plurality of connecting rods 22 in each group are arranged in a ring. The plurality of groups of connecting rods 22 are coaxially arranged, and the radial dimension of the plurality of groups of connecting rods 22 gradually increases. The plurality of connecting rods 22 are fixedly installed on the lower end face of the reinforcing connecting part 18. After the base material is filled into the reinforced foundation pit 11 and before the base material solidifies, the reinforcing structure 17, the reinforcing connecting part 18 and the plurality of connecting rods 22 are installed as a whole, wherein the plurality of connecting rods 22 are inserted into the new base layer 16, while the reinforcing structure 17 and the reinforcing connecting part 18 are located above the new base layer 16. In this way, the whole operation process is simpler and more accurate, and there is no need to prefabricate the connecting rods 22 in the new base layer 16, which also eliminates the problem of difficult assembly. Preferably, the multiple connecting rods 22 are divided into multiple groups, and the multiple connecting rods 22 in each group are arranged in a ring; the multiple groups of connecting rods 22 are coaxially arranged, and the radial dimensions of the multiple groups of connecting rods 22 gradually increase; the multiple groups of connecting rods 22 improve the connection reliability between the reinforcing structure 17, the reinforcing connection part 18 and the new base layer 16. The connecting rods 22 and the reinforcing connection part 18 are pre-welded together or the connecting rods 22 and the reinforcing connection part 18 adopt an integral molding structure.

[0047] The outer surface of the connecting rod 22 is provided with multiple outwardly extending protrusions. The protrusions increase the contact area between the connecting rod 22 and the new base layer 16, thereby enhancing the connection between the two.

[0048] Please see Figures 1 to 3 As a specific embodiment of the road surface maintenance method provided by the present invention, the thickness of the reinforcing connecting layer 13 is one-half to two-thirds of the surface layer, and the bottom surface of the reinforcing connecting layer 13 is provided with multiple recesses 26, and the reinforcing structure 17 is provided with multiple protrusions that cooperate with the recesses 26; the reinforcing structure 17 is provided with a thickened portion 27 located above the reinforcing connecting layer 13; the reinforcing connecting layer 13 of this thickness can achieve better strength and effectiveness; and the cooperation of multiple recesses and protrusions makes the connection between the old and new surface layers more reliable and tight. The thickened portion 27 also makes the connection between the reinforcing structure 17 and the new surface layer more reliable.

[0049] Please see Figure 1 and Figure 3As a specific embodiment of the road surface maintenance method provided by the present invention, the inner wall of the reinforced foundation pit 11 is an inclined surface 28, and the longitudinal section of the reinforced foundation pit 11 is a trapezoid with a smaller upper section and a larger lower section. The reinforced foundation pit 11 with a trapezoidal section improves the bearing capacity of the newly formed base layer 16.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for highway pavement maintenance, characterized in that, include: S1: Use a first graphic mark at the location of the road surface damage, the first graphic covering the damaged location and the area of ​​the first graphic being larger than the area of ​​the damaged location; dig downwards according to the first graphic to 15-20cm below the surface layer to form a reinforcement pit; S2: A second graphic is used to cover the first graphic on the road surface, and the area of ​​the second graphic is larger than the area of ​​the first graphic; the road surface within the second graphic is subjected to surface destruction treatment to form a ring-shaped reinforcing connection layer; excavation is carried out from the area on the inner wall of the reinforced foundation pit that is lower than the road surface layer, so that the cross-sectional area of ​​the reinforced foundation pit is greater than or equal to the cross-sectional area of ​​the second graphic. S3: A plurality of first support members are arranged in a ring within the reinforced foundation pit, with the upper and lower ends of the first support members supporting the top and bottom surfaces of the reinforced foundation pit, respectively. The first support members are located directly below the reinforcing connection layer. A plurality of second support members are arranged in a ring within the reinforced foundation pit, with the plurality of second support members located inside the plurality of first support members. The lower end of the second support member is supported on the bottom surface of the reinforced foundation pit, and the upper end is located at the junction of the reinforcing connection layer and the reinforced foundation pit. S4: Fill the reinforced foundation pit with base material until the upper end of the base material is flush with the lower end of the surface layer to form a new base layer; A ring-shaped reinforcing structure is installed on the reinforcing connection layer, with the center of the reinforcing structure recessed downwards to form a reinforcing connection part. The reinforcing connection part enters the reinforced foundation pit and is located above the new base layer. When forming the new base layer, multiple connecting rods are prefabricated and installed into the new base layer, arranged longitudinally. The upper end of the connecting rod protrudes above the new base layer. The reinforcing connection part has multiple connecting holes, each corresponding to a connecting rod. The upper end of the connecting rod passes through the corresponding connecting hole and is fixedly connected to the reinforcing connection part. The reinforcing structure and the reinforcing connection part are connected to the new base layer by means of the connecting rods. After the surface layer material is filled to form a new surface layer, the new surface layer and the new base layer are well connected by the reinforcing structure and the reinforcing connection part, so that the new surface layer can withstand greater external forces. The multiple connecting rods are divided into multiple groups, and the multiple connecting rods in each group are arranged in a ring. The multiple groups of connecting rods are coaxially arranged, and the radial dimensions of the multiple groups of connecting rods gradually increase. Both the reinforcing structure and the reinforcing connection are suspended; the reinforcing structure is located above the bottom surface of the reinforcing connection layer and has a filling gap between it and the surface of the reinforcing connection layer; the reinforcing connection is located above the new base layer and below the surface of the reinforcing connection layer, and has a filling gap between it and the new base layer. S5: Fill the reinforced foundation pit and the reinforced connection layer with surface material until it is flush with the undamaged road surface.

2. The highway pavement maintenance method as described in claim 1, characterized in that, Both the first support member and the second support member are provided with load-bearing plates at their upper and lower ends.

3. The highway pavement maintenance method as described in claim 2, characterized in that, Both the first support member and the second support member are provided with length adjustment members, which are used to adjust the bearing plate to abut against the top and bottom surfaces of the reinforced foundation pit.

4. The highway pavement maintenance method as described in claim 2, characterized in that, Before step S3, a gravel layer is laid on the bottom surface of the reinforced foundation pit; the bearing plates at the lower ends of the first support member and the second support member are both supported on the gravel layer.

5. The highway pavement maintenance method as described in claim 1, characterized in that, The reinforced connection part is provided with a plurality of through holes for filling the surface material, and the plurality of through holes are arranged in a ring at intervals; the plurality of connecting rods are divided into two groups, and the plurality of through holes are located between the two groups of connecting rods.

6. The highway pavement maintenance method as described in claim 1, characterized in that, When the new base layer is formed in step S4, a plurality of connecting rods are fixedly provided at the lower end of the reinforcing connection part. The plurality of connecting rods pass downward into the new base layer and are fixedly connected to the new base layer. The plurality of connecting rods are divided into multiple groups, and the plurality of connecting rods in each group are arranged in a ring. The multiple groups of connecting rods are coaxially arranged, and the radial dimension of the multiple groups of connecting rods gradually increases.

7. The highway pavement maintenance method as described in claim 1, characterized in that, The thickness of the reinforcing connection layer is one-half to two-thirds of that of the surface layer, and the surface of the reinforcing connection layer is provided with a plurality of pits, and the reinforcing structure is provided with a plurality of protrusions that cooperate with the pits; the reinforcing structure is provided with a thickened portion located above the reinforcing connection layer.

8. The highway pavement maintenance method as described in claim 1, characterized in that, The inner wall of the reinforced foundation pit is an inclined surface, and the longitudinal section of the reinforced foundation pit is a trapezoid with a smaller top and a larger bottom.

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