Municipal road rapid repairing structure and construction method thereof

Abstract

The invention discloses a municipal road rapid repairing structure and a construction method thereof.The municipal road rapid repairing structure comprises a plurality of base layer repairing blocks, the base layer repairing blocks are installed in grooves formed in damaged parts of a roadbed, every two adjacent base layer repairing blocks are connected in an inserted mode, and buffer repairing blocks are arranged on the upper surfaces of the base layer repairing blocks; the buffer repairing blocks are connected in an inserted mode, the upper surfaces of the buffer repairing blocks are covered with surface layers, the base layer repairing blocks are connected in an adhesive mode through fast curing adhesives, and the base layer repairing blocks and the roadbed are connected in an adhesive mode through fast curing adhesives. And the base layer repairing block and the buffer repairing blocks as well as the adjacent buffer repairing blocks are also bonded and connected through the rapid curing adhesive. The prefabricated base layer repairing block and the buffer repairing block are adopted, so that the cast-in-place and maintenance time is shortened, road repairing can be completed in a short time, and the influence on traffic is reduced. And the repairing blocks are further reinforced through rapid bonding glue, so that the strength of the whole repairing structure is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of road repair, and specifically provides a rapid repair structure for municipal roads and a construction method thereof. Background Technique

[0002] During the long-term use of municipal roads, due to the influence of factors such as vehicle loads and natural environments, damages such as cracks and potholes are likely to occur. Timely repair of damaged roads is of great significance for ensuring the normal use of roads and improving traffic safety.

[0003] The existing patent application with the publication number CN114875761A discloses a rapid repair structure for municipal roads and a construction method thereof, including a roadbed and a caulking material. A square groove is formed in the roadbed, and a precast filling plate is arranged in the square groove. The caulking material includes an adhesive layer, a waterproof cushion layer, and an anti-skid wear-resistant layer. The adhesive layer is arranged between the precast filling plate and the inner side wall of the square groove, the waterproof cushion layer is arranged between the precast filling plate and the bottom of the square groove, the anti-skid wear-resistant layer is arranged on the precast filling plate, and the edge of the anti-skid wear-resistant layer is fixedly connected to the roadbed near the opening of the square groove. This solution makes the use of the caulking material relatively scattered. When the repair structure is compressed, the deformation amount of the caulking material is less, which improves the strength of the repair structure to a certain extent. The precast filling plate can evenly distribute the pressure when the repair structure is compressed, making the repair structure more durable.

[0004] This rapid repair structure provided by the above patent needs to first groove the roadbed and fix the precast cushion plate on the roadbed through the caulking material. Although this method can quickly repair the road through the precast cushion plate, the effect of repairing the roadbed only through the precast cushion plate is limited. Long-term vehicle rolling will cause the precast cushion plate to loosen quickly, and then lead to the road being damaged again. Summary of the Invention

[0005] The purpose of the present invention is to provide a rapid repair structure for municipal roads and a construction method thereof, aiming to improve the problem that the existing road repair structure has limited effect on repairing the roadbed, and long-term vehicle rolling will cause the precast cushion plate to loosen quickly, and then lead to the road being damaged again.

[0006] The present invention is implemented as follows: To achieve the above object, according to one aspect of the present invention, the present invention provides a rapid repair structure for municipal roads, including a plurality of base repair blocks, which are installed in the grooves opened at the damaged parts of the roadbed. Adjacent base repair blocks are plugged and connected to each other. A buffer repair block is provided on the upper surface of the base repair block, and the buffer repair blocks are plugged and connected to each other. A surface layer is covered on the upper surface of the buffer repair blocks, and the base repair blocks are adhesively connected to each other and between the base repair blocks and the roadbed through a rapid-curing adhesive. The base repair blocks and the buffer repair blocks are also adhesively connected to each other and between adjacent buffer repair blocks through a rapid-curing adhesive.

[0007] Preferably, a first connecting rod and a first connecting groove are provided on the side surface of the base repair block, and one side surface of the two symmetric side surfaces of the base repair block is provided with a first connecting rod, and the other side surface is provided with a first connecting groove, and the first connecting rod and the first connecting groove are arranged in alignment.

[0008] Preferably, a plurality of limiting grooves are evenly provided on the upper surface of the base repair block, and anti-slip protrusions are evenly provided on the bottom surface of the base repair block. The anti-slip protrusions are distributed in a grid shape. The material of the base repair block is steel fiber concrete.

[0009] Preferably, a plurality of limiting protrusions are provided on the bottom surface of the buffer repair block, and the limiting protrusions are arranged in alignment with the limiting grooves; and a second connecting rod and a second connecting groove are provided on the side surface of the buffer repair block. One side surface of the two symmetric side surfaces of the buffer repair block is provided with a second connecting rod, and the other side surface is provided with a second connecting groove, and the second connecting rod and the second connecting groove are arranged in alignment; and the buffer repair block is processed from a cement-based buffer material.

[0010] Preferably, the surface layer is a modified asphalt mixture layer. The aggregate particle size of the modified asphalt mixture is 5-15 mm. The curing time of the rapid-curing adhesive is ≤60 minutes, the compressive strength after 2 hours is ≥15 MPa, and the bonding strength with the concrete base is ≥2.5 MPa.

[0011] According to the second aspect of the present invention, a construction method for a rapid repair structure of a municipal road is provided. The specific steps of the construction method are as follows: S100. Clean the loose materials and sundries in the damaged area, sprinkle water on the base to make the moisture content of the base reach 8%-12%; S200. Cut and groove the roadbed, cut off the damaged roadbed, and form a groove on the roadbed. Then clean the groove opened on the roadbed, and roughen the side surface of the groove; S300. Lay the base repair blocks spliced according to the damaged size, and connect and fix the first connecting grooves of adjacent base repair blocks through the first connecting rods; S400, evenly applying a quick-curing adhesive on the surface of the base repair block, and the quick-curing adhesive flows into the gap between the base repair block and the roadbed and the gap between the base repair blocks, so that the base repair block and the roadbed and adjacent base repair blocks are firmly connected; S500, embedding the limiting protrusion of the buffer repair block into the limiting groove of the base repair block, and connecting and fixing the second connecting grooves of the adjacent surface repair blocks through the second connecting rod; S600, using elastic sealant to fill the gap between the buffer repair block and the original road surface; and using fast-curing adhesive to bond adjacent buffer repair blocks and between the buffer repair block and the base layer; S700. Lay a surface layer on the upper surface of the buffer repair block to ensure that the upper surface of the surface layer is on the same plane as the original road surface, and compact the surface layer.

[0012] Preferably, in step S100, the specific steps of cleaning the damaged area are as follows: S110, using a cleaning tool to clean up loose materials and debris in the damaged area of the road; S120, flushing the damaged road area with a high-pressure cleaning water gun to clean the damaged road area; S130. Use a high-pressure air spray gun to spray the damaged area to clean up the remaining moisture on the road surface.

[0013] Preferably, in step S200, the specific steps of grooving the roadbed are as follows: S210, firstly, define the range to be grooved according to the damaged area of the roadbed, and mark the cutting position with a marker; S220, cutting the surface position by using a cutting machine, then breaking up the damaged roadbed in the cutting area by using an electric pick, and cleaning up the broken roadbed, thereby forming a groove on the roadbed; S230, roughening the side wall and the bottom surface of the groove using a roughening machine, cleaning the debris inside the groove after the roughening is completed, and using a vacuum cleaner to suck away the dust in the groove.

[0014] Preferably, the fast-curing adhesive in step S400 is a two-component modified epoxy adhesive or a fast-hardening sulphoaluminate cement-based adhesive, the ambient temperature during construction is 5-35°C, and the relative humidity is ≤85%; the elastic sealant in step S600 is a silicone sealant or a polyurethane sealant, with an elongation at break ≥300%, no brittle cracking at low temperatures, and no flow at high temperatures.

[0015] Preferably, it further includes step S800 of sealing and curing the repaired area for 2-4 hours. During this period, load application is prohibited, warning signs are set around the repaired area to prohibit vehicles and pedestrians from passing. During the curing period, the repaired area should be regularly inspected to ensure the stability and safety of the repaired structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By adopting prefabricated base repair blocks and buffer repair blocks, the present invention reduces the on-site casting and curing time, has a fast construction speed, can complete road repair in a short time, and reduces the impact on traffic. By setting structures such as anti-slip protrusions, limit grooves, limit protrusions, first connection grooves, first connecting rods, second connection grooves, and second connecting rods, firm connections between the base repair block and the original road base, between the base repair block and the buffer repair block, and between the buffer repair blocks are achieved, improving the integrity and stability of the repair structure.

[0017] 2. The present invention further strengthens between each repair block through fast-bonding glue, enhancing the strength of the entire repair structure and avoiding the easy damage of the repair structure.

[0018] 3. Since the components of the repair structure of the present invention are closely connected, it can effectively prevent moisture and debris from entering the repaired area, reduce the damage factors of the repaired part, and extend the service life of the repair structure. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the base repair block of the present invention from the front-end oblique downward perspective; Figure 3 is the structural schematic diagram of the base repair block of the present invention from the front-end oblique upward perspective; Figure 4 is the structural schematic diagram of the buffer repair block of the present invention; Figure 5 is the flowchart of the construction method of the present invention.

[0020] In the figure: 1. Base repair block; 11. Limit groove; 12. First connecting rod; 13. First connection groove; 14. Anti-slip protrusion; 2. Buffer repair block; 21. Second connecting rod; 22. Limit protrusion; 23. Second connection groove; 3. Surface layer. Detailed Embodiments

[0021] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The following will be further described in conjunction with the accompanying drawings and specific embodiments: Embodiment 1 As Figure 1 shown, a rapid repair structure for municipal roads includes a plurality of base repair blocks 1. Through the base repair blocks 1, the damaged positions of the road can be efficiently repaired, avoiding the drawbacks of traditional on-site casting. This can shorten the road repair time and the subsequent maintenance time, enabling the repaired road to be put into use as soon as possible. The base repair blocks 1 are installed in the grooves opened at the damaged parts of the roadbed, and adjacent base repair blocks 1 are inserted and connected to each other, which facilitates the stable connection of adjacent base repair blocks 1 and avoids the dislocation and loosening of adjacent repair blocks. The upper surface of the base repair block 1 is provided with buffer repair blocks 2, and the buffer repair blocks 2 are inserted and connected to each other. The upper surface of the buffer repair blocks 2 is covered with a surface layer 3. Moreover, between the base repair blocks 1 and between the base repair blocks 1 and the roadbed are adhesively connected by a rapid-curing adhesive, and between the base repair blocks 1 and the buffer repair blocks 2 and between adjacent buffer repair blocks 2 are also adhesively connected by a rapid-curing adhesive. The adhesive connection by the rapid-curing glue can make the glue cure quickly, thereby making the connection of each component stable and forming a stable structure.

[0023] As Figure 2 and Figure 3As shown in the figure, the side of the base repair block 1 is provided with a first connecting rod 12 and a first connecting groove 13. For the two symmetrical sides of the base repair block 1, one side should be provided with the first connecting rod 12, and the other side should be provided with the first connecting groove 13, and the first connecting rod 12 and the first connecting groove 13 are arranged in alignment. This structure facilitates the connection of adjacent integrated repair blocks, so that multiple integrated repair blocks form a whole. The upper surface of the base repair block 1 is evenly provided with a plurality of limiting grooves 11, which are convenient for cooperating with the buffer repair block, facilitating the mutual limitation between the buffer repair block 2 and the base repair block 1, and preventing the buffer repair block 2 and the base repair block 1 from being easily displaced and loosened. The bottom surface of the base repair block 1 is evenly provided with anti-slip protrusions 14, which are distributed in a grid pattern. The height of the anti-slip protrusions 14 is 5 mm, and the bottom surface area accounts for 30% of the bottom area of the base repair block 1. This structure can effectively increase the friction force between the base repair block 1 and the roadbed, making the base repair block stable. The material of the base repair block 1 is steel fiber concrete, and the volume content of steel fiber is 0.8%. It can effectively improve the strength of the base repair block 1.

[0024] As Figure 4 shown, the bottom surface of the buffer repair block 2 is provided with a plurality of limiting protrusions 22, and the limiting protrusions 22 are arranged in alignment with the limiting grooves 11, which facilitates the stable connection of the buffer repair block 2 with the limiting grooves 11 and ensures the stable connection of the buffer repair block 2 with the base repair block 1. And the side of the buffer repair block 2 is provided with a second connecting rod 21 and a second connecting groove 23. For the two symmetrical sides of the buffer repair block 2, one side should be provided with the second connecting rod 21, and the other side should be provided with the second connecting groove 23, and the second connecting rod 21 and the second connecting groove 23 are arranged in alignment. This structure facilitates the mutual insertion of adjacent buffer repair blocks 2, which can ensure that multiple repair blocks form a whole and is convenient for the stable use of multiple repair blocks. And the buffer repair block 2 is processed from a cement-based buffer material, which is formed by mixing and compacting cement as a binder with graded crushed stone, sand or soil. It has high strength and stiffness and is mainly used for buffering between the semi-rigid base and the subgrade to improve the integrity of the base. However, its toughness is poor, and shrinkage joints need to be set to prevent cracking. It is suitable for arterial roads with heavy traffic loads and high requirements for base strength, and the thickness is usually 15 - 30 cm.

[0025] Example 2 As Figure 1As shown in the figure, a rapid repair structure for municipal roads includes multiple base repair blocks 1. The damaged parts of the road can be efficiently repaired through the base repair blocks 1, avoiding the disadvantages of traditional on-site casting. This can shorten the road repair time and the subsequent maintenance time, enabling the repaired road to be put into use as soon as possible. The base repair blocks 1 are installed in the grooves opened at the damaged parts of the roadbed. Adjacent base repair blocks 1 are connected by inserting into each other, which facilitates the stable connection of adjacent base repair blocks 1 and avoids the dislocation and loosening of adjacent repair blocks. A buffer repair block 2 is provided on the upper surface of the base repair block 1. The buffer repair blocks 2 are connected by inserting into each other. A surface layer 3 is laid on the upper surface of the buffer repair blocks 2. Moreover, the base repair blocks 1 are adhesively connected to each other and between the base repair blocks 1 and the roadbed through a rapid-curing adhesive. The base repair blocks 1 and the buffer repair blocks 2 and between adjacent buffer repair blocks 2 are also adhesively connected through a rapid-curing adhesive. The connection by the rapid-curing adhesive can make the glue cure quickly, so that each component is stably bonded, thus forming a stable structure.

[0026] As Figure 2 and Figure 3 shown in the figure, a first connecting rod 12 and a first connecting groove 13 are provided on the side surface of the base repair block 1. And for two symmetric side surfaces of the base repair block 1, it is necessary to ensure that a first connecting rod 12 is provided on one side surface and a first connecting groove 13 is provided on the other side surface, and the first connecting rod 12 and the first connecting groove 13 are arranged in alignment; this structure is convenient for adjacent integrated repair blocks to be connected, so that multiple integrated repair blocks form a whole. A plurality of limiting grooves 11 are evenly provided on the upper surface of the base repair block 1. The limiting grooves 11 are convenient for cooperating with the buffer repair blocks, facilitating the mutual limitation between the buffer repair block 2 and the base repair block 1, and avoiding the easy dislocation and loosening between the buffer repair block 2 and the base repair block 1. Anti-slip protrusions 14 are evenly provided on the bottom surface of the base repair block 1. The anti-slip protrusions 14 are distributed in a grid pattern. The height of the anti-slip protrusions 14 is 10 mm, and the bottom surface area accounts for 50% of the bottom area of the base repair block 1; this structure can effectively increase the friction force between the base repair block 1 and the roadbed, making the base repair block stable. The material of the base repair block 1 is steel fiber concrete, and the volume content of steel fibers is 1.5%. It can effectively improve the strength of the base repair block 1.

[0027] As Figure 4As shown in the figure, the bottom surface of the buffer repair block 2 is provided with a plurality of limiting protrusions 22, and the limiting protrusions 22 are arranged aligned with the limiting grooves 11; this facilitates the stable connection of the buffer repair block 2 with the limiting grooves 11 and ensures the stable connection of the buffer repair block 2 with the base repair block 1. Moreover, the side surface of the buffer repair block 2 is provided with a second connecting rod 21 and a second connecting groove 23. On two symmetrical side surfaces of the buffer repair block 2, it is necessary to ensure that one side surface is provided with the second connecting rod 21 and the other side surface is provided with the second connecting groove 23, and the second connecting rod 21 and the second connecting groove 23 are arranged aligned; this structure facilitates the mutual insertion of adjacent buffer repair blocks 2, so that multiple repair blocks can form a whole, which is convenient for the stable use of multiple repair blocks. And the buffer repair block 2 is processed from a cement-based buffer material; using cement as the binder, it is mixed with graded crushed stone, sand or soil and compacted into shape. It has high strength and stiffness, and is mainly used for buffering between the semi-rigid base and the soil base to improve the integrity of the base; however, its toughness is poor, and shrinkage joints need to be set to prevent cracking. It is applicable to arterial roads with heavy traffic loads and high requirements for base strength, and the thickness is usually 15 - 30 cm.

[0028] As Figure 1 shown in the figure, the surface layer 3 is a modified asphalt mixture layer. The aggregate particle size of the modified asphalt mixture is 15 mm, the curing time of the rapid-curing adhesive ≤ 60 minutes, the compressive strength after 2 hours ≥ 15 MPa, and the bonding strength with the concrete base ≥ 2.5 MPa.

[0029] Example 3 As Figure 5 shown in the figure, a construction method for a rapid repair structure of a municipal road. The specific steps of this construction method are as follows: S100. Clean the loose materials and sundries in the damaged area, sprinkle water on the base to make the moisture content of the base reach 8%; the specific steps for cleaning the damaged area are as follows: S110. Use a cleaning tool to clean the loose materials and sundries in the damaged area of the road; S120. Use a high-pressure cleaning water gun to wash the damaged area of the road to clean the damaged area of the road; S130. Use a high-pressure air spray gun to blow air on the damaged area to clean the remaining moisture on the road surface.

[0030] S200. Cut and groove the roadbed, remove the damaged roadbed, and form a groove on the roadbed. Then clean the groove opened on the roadbed and roughen the side surface of the groove; the specific steps for grooving the roadbed are as follows: S210. First, delimit the range that needs to be grooved according to the damaged area of the roadbed, and use a marker pen to mark the cutting position; S220. Use a cutting machine to cut the position on the surface, then use a pneumatic pick to break up the damaged roadbed in the cutting area and clean up the broken roadbed, thereby forming a groove in the roadbed; S230. Use a scarifier to scarify the side walls and the bottom surface of the groove to ensure that the surface roughness of the base layer reaches 3 mm. After the scarifying treatment, clean up the miscellaneous materials inside the groove and use a vacuum cleaner to suck away the dust in the groove.

[0031] S300. Lay the base layer repair blocks 1 according to the damaged size and splice them. Connect and fix the first connection grooves 13 of adjacent base layer repair blocks 1 through the first connecting rods 12; S400. Uniformly apply a fast-curing adhesive on the surface of the base layer repair blocks 1 to form a bonding layer with a thickness of 2 mm. The fast-curing adhesive flows into the gaps between the base layer repair blocks 1 and the roadbed and between adjacent base layer repair blocks 1, so that the base layer repair blocks 1 are firmly connected to the roadbed and adjacent base layer repair blocks 1; The fast-curing adhesive uses a two-component modified epoxy adhesive or a fast-hardening sulphoaluminate cement-based adhesive, and the ambient temperature during construction is 5 °C and the relative humidity ≤ 85%.

[0032] S500. Insert the limit protrusions 22 of the buffer repair blocks 2 into the limit grooves 11 of the base layer repair blocks 1, and connect and fix the second connection grooves 23 of adjacent surface layer 3 repair blocks through the second connecting rods 21; S600. Fill the gaps between the buffer repair blocks 2 and the original road surface with an elastic sealant; and use a fast-curing adhesive to bond adjacent buffer repair blocks 2 and between the buffer repair blocks 2 and the base layer; The elastic sealant is a silicone sealant or a polyurethane sealant, with an elongation at break ≥ 300%, not brittle at low temperature (-20 °C), and not flowing at high temperature (60 °C).

[0033] S700. Lay the surface layer 3 on the upper surface of the buffer repair blocks 2, ensure that the upper surface of the surface layer 3 is on the same plane as the original road surface, and compact the surface layer 3.

[0034] Example 4 As Figure 5 shown, a construction method for a rapid repair structure of a municipal road, and the specific steps of the construction method are as follows: S100. Clean up the loose materials and sundries in the damaged area, sprinkle water on the base layer to make the water content of the base layer reach 12%; The specific steps for cleaning the damaged area are as follows: S110. Use a cleaning tool to clean up the loose materials and sundries in the damaged area of the road; S120. Use a high-pressure cleaning water gun to flush the damaged area of the road to clean up the damaged area of the road; S130. Use a high-pressure air spray gun to blow air at the damaged area to clean up the residual moisture on the road surface.

[0035] S200. Cut and groove the roadbed, remove the damaged roadbed, and form a groove on the roadbed. Then clean up the groove opened on the roadbed and roughen the side surface of the groove; The specific steps for grooving the roadbed are as follows: S210. First, delimit the range that needs to be grooved according to the damaged area of the roadbed, and use a marker pen to mark the cutting position; S220. Use a cutting machine to cut the surface position, then use a pneumatic pick to break up the damaged roadbed in the cutting area and clean up the broken roadbed, so as to form a groove on the roadbed; S230. Use a scarifier to roughen the side wall and bottom surface of the groove to ensure that the roughness of the base surface reaches 3 - 5 mm. After the roughening treatment, clean up the miscellaneous materials inside the groove and use a vacuum cleaner to suck away the dust in the groove.

[0036] S300. Piece and lay the base repair block 1 according to the damaged size, and connect and fix the first connection grooves 13 of adjacent base repair blocks 1 through the first connecting rods 12; S400. Uniformly apply a fast-curing adhesive on the surface of the base repair block 1 to form a bonding layer with a thickness of 4 mm. The fast-curing adhesive flows into the gaps between the base repair block 1 and the roadbed and between the base repair blocks 1, so that the base repair block 1 is firmly connected to the roadbed and adjacent base repair blocks 1; The fast-curing adhesive adopts a two-component modified epoxy adhesive or a rapid hardening sulphoaluminate cement-based adhesive, and the ambient temperature during construction is 35 °C, and the relative humidity ≤ 85%.

[0037] S500. Insert the limiting protrusions 22 of the buffer repair block 2 into the limiting grooves 11 of the base repair block 1, and connect and fix the second connection grooves 23 of adjacent surface layer 3 repair blocks through the second connecting rods 21; S600. Fill the gaps between the buffer repair block 2 and the original road surface with an elastic sealant; and use a fast-curing adhesive to bond and connect adjacent buffer repair blocks 2 and between the buffer repair block 2 and the base; The elastic sealant is a silicone sealant or a polyurethane sealant, with an elongation at break ≥ 300%, not brittle at low temperature (-20 °C), and not flowing at high temperature (60 °C).

[0038] S700. Lay the surface layer 3 on the upper surface of the buffer repair block 2, ensure that the upper surface of the surface layer 3 is on the same plane as the original road surface, and compact the surface layer 3.

[0039] For S800, the repaired area shall be closed for curing for 4 hours. During this period, load application is prohibited. Warning signs shall be set around the repaired area to prohibit vehicles and pedestrians from passing. During the curing period, the repaired area shall be inspected regularly to ensure the stability and safety of the repaired structure.

[0040] In summary, compared with the prior art, in this application, by using the prefabricated base repair block 1 and the buffer repair block 2, the on-site pouring and curing time is reduced, the construction speed is fast, the road repair can be completed in a short time, and the impact on traffic is reduced; by setting structures such as the anti-slip protrusions 14, the limiting grooves 11, the limiting protrusions 22, the first connection grooves 13, the first connecting rods 12, the second connection grooves 23, and the second connecting rods 21, a firm connection between the base repair block 1 and the original road base, between the base repair block 1 and the buffer repair block 2, and between the buffer repair blocks 2 is achieved, improving the integrity and stability of the repaired structure. The strength of the entire repaired structure is enhanced by further strengthening between the repair blocks with fast-bonding glue, avoiding the easy damage of the repaired structure.

[0041] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid repair structure for municipal roads, characterized in that, It includes multiple base repair blocks (1), and the base repair blocks (1) are installed in the grooves opened at the damaged parts of the roadbed. The adjacent base repair blocks (1) are plugged and connected to each other. A buffer repair block (2) is provided on the upper surface of the base repair block (1), and the buffer repair blocks (2) are plugged and connected to each other. A surface layer (3) is covered on the upper surface of the buffer repair blocks (2). And the base repair blocks (1) are adhesively connected to each other and between the base repair blocks (1) and the roadbed through a fast-curing adhesive. The base repair blocks (1) and the buffer repair blocks (2) are also adhesively connected to each other and between adjacent buffer repair blocks (2) through a fast-curing adhesive.

2. The rapid repair structure for a municipal road according to claim 1, characterized in that, The side surface of the base repair block (1) is provided with a first connecting rod (12) and a first connecting groove (13). And for two symmetric side surfaces of the base repair block (1), it is necessary to ensure that a first connecting rod (12) is arranged on one side surface and a first connecting groove (13) is arranged on the other side surface, and the first connecting rod (12) and the first connecting groove (13) are arranged in alignment.

3. The rapid repair structure for a municipal road according to claim 2, wherein, A plurality of limiting grooves (11) are uniformly provided on the upper surface of the base repair block (1). Anti-slip protrusions (14) are uniformly provided on the bottom surface of the base repair block (1). The anti-slip protrusions (14) are distributed in a grid pattern. The material of the base repair block (1) is steel fiber concrete.

4. A rapid repair structure for municipal roads according to claim 3, characterized in that, A plurality of limiting protrusions (22) are provided on the bottom surface of the buffer repair block (2). The limiting protrusions (22) are arranged in alignment with the limiting grooves (11). And the side surface of the buffer repair block (2) is provided with a second connecting rod (21) and a second connecting groove (23). For two symmetric side surfaces of the buffer repair block (2), it is necessary to ensure that a second connecting rod (21) is arranged on one side surface and a second connecting groove (23) is arranged on the other side surface, and the second connecting rod (21) and the second connecting groove (23) are arranged in alignment. And the buffer repair block (2) is processed from a cement-based buffer material.

5. The rapid repair structure for a municipal road according to claim 4, wherein, The surface layer (3) is a modified asphalt mixture layer. The aggregate particle size of the modified asphalt mixture is 5 - 15 mm. The curing time of the fast-curing adhesive ≤ 60 minutes, the compressive strength after 2 hours ≥ 15 MPa, and the bonding strength with the concrete base ≥ 2.5 MPa.

6. A construction method of a rapid repair structure for municipal roads, used for constructing the rapid repair structure described in claim 5, characterized in that, The specific steps of this construction method are as follows: S100. Clean the loose materials and sundries in the damaged area, sprinkle water on the base to make the moisture content of the base reach 8% - 12%; S200. Cut and groove the roadbed, cut off the damaged roadbed, and form a groove on the roadbed. Then clean the groove opened on the roadbed, and roughen the side surface of the groove; S300. Lay the base repair blocks (1) by splicing according to the damaged size, and connect and fix the first connecting grooves (13) of adjacent base repair blocks (1) through the first connecting rods (12); S400. Uniformly apply the fast-curing adhesive on the surface of the base repair blocks (1). The fast-curing adhesive flows into the gaps between the base repair blocks (1) and the roadbed and between the base repair blocks (1), so that the base repair blocks (1) are firmly connected to the roadbed and adjacent base repair blocks (1); S500. Insert the limit protrusion (22) of the buffer repair block (2) into the limit groove (11) of the base repair block (1), and connect and fix the second connection grooves (23) of adjacent surface layer (3) repair blocks through the second connecting rod (21); S600. Fill the gap between the buffer repair block (2) and the original road surface with elastic sealant; and bond and connect adjacent buffer repair blocks (2) and between the buffer repair block (2) and the base with fast-curing adhesive; S700. Lay the surface layer (3) on the upper surface of the buffer repair block (2), ensure that the upper surface of the surface layer (3) is on the same plane as the original road surface, and compact the surface layer (3).

7. A rapid repair structure for municipal roads and its construction method according to claim 6, characterized in that, In the step S100, the specific steps for cleaning the damaged area are as follows: S110. Use a cleaning tool to clean the loose materials and sundries in the damaged area of the road; S120. Use a high-pressure cleaning water gun to flush the damaged area of the road to clean the damaged area of the road; S130. Use a high-pressure air spray gun to jet air on the damaged area to clean the remaining moisture on the road surface.

8. A rapid repair structure for municipal roads and its construction method according to claim 6, characterized in that, In the step S200, the specific steps for grooving the roadbed are as follows: S210. First, delimit the range that needs to be grooved according to the damaged area of the roadbed, and use a marker pen to mark the cutting position; S220. Use a cutting machine to cut the surface position, then use a pickaxe to break the damaged roadbed in the cutting area, and clean the broken roadbed to form a groove in the roadbed; S230. Use a scarifier to scarify the side wall and bottom surface of the groove. After the scarifying treatment is completed, clean the miscellaneous materials inside the groove, and use a vacuum cleaner to suck the dust in the groove.

9. A rapid repair structure for municipal roads and its construction method according to claim 6, characterized in that, The fast-curing adhesive in the step S400 is a two-component modified epoxy adhesive or a fast-hardening sulphoaluminate cement-based adhesive. The ambient temperature during construction is 5 - 35 °C, and the relative humidity ≤ 85%; the elastic sealant in the step S600 is a silicone sealant or a polyurethane sealant, with an elongation at break ≥ 300%, not brittle at low temperature, and not flowing at high temperature.

10. A rapid repair structure for municipal roads and its construction method according to claim 6, characterized in that, It also includes step S800. The repaired area is closed for curing for 2 - 4 hours. During this period, load application is prohibited. Warning signs are set around the repaired area to prohibit vehicles and pedestrians from passing. During the curing period, the repaired area should be regularly inspected to ensure the stability and safety of the repaired structure.

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