Anti-cracking asphalt pavement structure

Abstract

The utility model relates to the technical field of asphalt roads, in particular to an anti-cracking asphalt pavement structure which comprises a tamped foundation layer, a crack blocking mechanism is arranged in the tamped foundation layer, the crack blocking mechanism comprises a connecting pavement fixedly connected to the bottom end of the tamped foundation layer, one side of the connecting pavement is fixedly connected with a geogrid step, and the other side of the connecting pavement is fixedly connected with the geogrid step. The top end of the geogrid step is fixedly connected with a supporting seat, the top end of the supporting seat is provided with a drainage box, the drainage box is filled with transverse reinforcing steel bars and vertical reinforcing steel bars, the top end of the drainage box is fixedly connected with a joint grouting area, and the top end of the joint grouting area is provided with a plurality of groups of V-shaped grooves. The compacted foundation layer is matched with the crack blocking mechanism, earthwork backfilling is facilitated through the geogrid steps so as to reduce working procedures, local connection strength is enhanced through matching of the drainage box and the joint grouting area, meanwhile, lateral deformation of the earth-rock mixed filler is limited under the constraint of the compacted foundation layer, and the construction efficiency is improved. And the load transmitted from the pavement to the roadbed is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt roads, and particularly relates to an anti-cracking asphalt pavement structure. Background Technique

[0002] An asphalt pavement refers to various types of pavements paved by mixing road-use asphalt materials into mineral materials. The asphalt binder improves the ability of the granular materials used for paving to resist damage to the pavement caused by driving and natural factors, making the pavement flat, less dusty, waterproof, and durable. Therefore, asphalt pavement is a widely used high-grade pavement in municipal road construction.

[0003] After retrieval, the patent document with the publication number CN220813272U proposed an anti-cracking structure for asphalt pavement: This application discloses an anti-cracking structure for asphalt pavement, which relates to the technical field of roads. This application includes a foundation soil layer, on the top of which a compacted subgrade is paved, inside which a gravel layer is paved, on the top of which an asphalt layer is paved, and multiple groups of connecting steel bars are evenly distributed inside the gravel layer. By setting the combined use of the gravel layer and the connecting steel bars, when the asphalt layer is subjected to external pressure, the loose structure inside the gravel layer forms a buffer for the pressure received by the asphalt layer, and at the same time, the connecting steel bars effectively strengthen the connection strength inside the asphalt layer and the gravel layer, thereby improving the anti-cracking performance of the asphalt layer.

[0004] During the use of the above technical solution, at the connection between the new and old pavements or at the fault, in some sections with unbalanced filling and excavation, due to the large differences in the stress history, compaction state, and soil property indexes of the subgrade soil, under the influence of factors such as vehicle loads and the natural environment, diseases such as uneven settlement and post-construction settlement of the subgrade often occur in the sections with unbalanced filling and excavation, and it is difficult to completely solve the problem of pavement cracking.

[0005] Therefore, it is very necessary to invent an anti-cracking asphalt pavement structure to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an anti-cracking asphalt pavement structure, which further improves the anti-cracking effect of the pavement through the cooperation of the compacted subgrade and the crack-blocking mechanism, so as to solve the problems that diseases such as uneven settlement and post-construction settlement of the subgrade often occur in the sections with unbalanced filling and excavation in the prior art, and it is difficult to completely solve the problem of pavement cracking.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An anti-cracking asphalt pavement structure, including a compacted subgrade. A crack blocking mechanism is arranged inside the compacted subgrade. The crack blocking mechanism includes a connecting road surface fixedly connected to the bottom end of the compacted subgrade. One side of the connecting road surface is fixedly connected with a geogrid step. The top end of the geogrid step is fixedly connected with a support seat, and a drainage box is installed on the top end of the support seat. The inside of the drainage box is filled with transverse steel bars and vertical steel bars. The top end of the drainage box is fixedly connected with a joint grouting area. A number of groups of V-shaped grooves are opened at the top end of the joint grouting area. By using the cooperation of parts such as the geogrid step and the joint grouting area, the connection between the compacted subgrade and the connecting road surface is strengthened, and the bearing performance at the joint of the subgrade structure is improved.

[0008] Preferably, a number of groups of penetration holes are opened on the inner side wall of the V-shaped groove. The penetration holes communicate with the joint grouting area. Water outlet pipes are fixedly connected to both sides of the joint grouting area. By using the cooperation of the penetration holes and the water outlet pipes, the scouring of water flow is reduced and it is convenient to discharge.

[0009] Preferably, a concrete layer is fixedly connected to the top end of the compacted subgrade, and a reinforcing steel wire mesh is laid inside the concrete layer. A reinforced gravel layer is fixedly connected to the top end of the concrete layer, thereby strengthening the compressive capacity of the structure.

[0010] Preferably, an asphalt layer is fixedly connected to the top end of the reinforced gravel layer, and shaped bricks are laid inside the asphalt layer. A wearing surface is fixedly connected to the top end of the asphalt layer. By using the shaped bricks inside the asphalt layer, a notch is exposed when the road surface breaks to facilitate repair.

[0011] Preferably, the compacted subgrade is U-shaped. Two groups of reinforcement piles are fixedly connected to the bottom end of the support seat and are respectively fixedly connected to the top ends of the geogrid step and the connecting road surface. The support of other parts is strengthened through the reinforcement of the geogrid step.

[0012] Preferably, a threaded groove is opened at the bottom end of the support seat. The inner side wall of the threaded groove is threadedly connected with a rotating threaded rod. The bottom end of the rotating threaded rod is rotatably connected with a fixed bracket. The fixed bracket is fixedly connected to the top end of the drainage box. Rotate the rotating threaded rod to connect the fixed bracket with the threaded groove.

[0013] In the above technical solution, the technical effects and advantages provided by the present utility model:

[0014] 1. Through the cooperation of the compacted subgrade and the crack blocking mechanism, the earthwork backfilling is facilitated through the geogrid steps to reduce the procedures. The local connection strength is enhanced through the cooperation of the drainage box and the joint grouting area, and the contact area with the compacted subgrade is increased by using the V-shaped groove, thereby further improving its stability. At the same time, under the restraint of the compacted subgrade, the lateral deformation of the soil-rock mixture is restricted, and the load transmitted from the road surface to the roadbed is reduced, thereby improving its anti-cracking performance.

[0015] 2. Through the cooperation of the threaded groove, the rotating threaded rod and the fixed bracket, the rotation of the rotating threaded rod promotes the installation of the fixed bracket and the support seat, thereby simplifying the construction components and improving the construction efficiency. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the crack blocking mechanism of the present utility model;

[0020] Figure 4 For the present utility model Figure 2 The enlarged structure schematic diagram at position A in it.

[0021] Description of the Reference Numerals in the Drawings:

[0022] 1. Compacted subgrade; 2. Crack blocking mechanism; 201. Connected road surface; 202. Geogrid step; 203. Support seat; 204. Joint grouting area; 205. V-shaped groove; 206. Penetration hole; 207. Outlet pipe; 208. Drainage box; 3. Reinforced gravel layer; 4. Concrete layer; 5. Asphalt layer; 6. Wear-resistant road surface; 7. Threaded groove; 8. Rotating threaded rod; 9. Fixed bracket. Detailed Embodiment

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0024] The present utility model provides as Figures 1-4An anti-cracking asphalt pavement structure shown in the figure includes a compacted subgrade 1. A crack-blocking mechanism 2 is arranged inside the compacted subgrade 1. The crack-blocking mechanism 2 includes a connecting road surface 201 fixedly connected to the bottom end of the compacted subgrade 1. One side of the connecting road surface 201 is fixedly connected with a geogrid step 202, which reduces the construction process by tamping after the soil is excavated. The top end of the geogrid step 202 is fixedly connected with a support seat 203, and a drainage box 208 is installed at the top end of the support seat 203. The inside of the drainage box 208 is filled with transverse steel bars and vertical steel bars to strengthen the local strength by using the drainage box 208. The top end of the drainage box 208 is fixedly connected with a joint grouting area 204. A number of groups of V-shaped grooves 205 are opened at the top end of the joint grouting area 204. By the cooperation of parts such as the geogrid step 202 and the joint grouting area 204, the connection between the compacted subgrade 1 and the connecting road surface 201 is strengthened, and the bearing performance at the joint of the subgrade structure is improved. A number of groups of penetration holes 206 are opened on the inner side wall of the V-shaped groove 205, and the penetration holes 206 communicate with the joint grouting area 204. Water outlet pipes 207 are fixedly connected to both sides of the joint grouting area 204. By the cooperation of the penetration holes 206 and the water outlet pipes 207, the scouring of water flow is reduced and it is convenient to discharge. The top end of the compacted subgrade 1 is fixedly connected with a concrete layer 4, and a reinforcing steel wire mesh is laid inside the concrete layer 4. The top end of the concrete layer 4 is fixedly connected with a reinforced gravel layer 3, which relieves the vehicle pressure through slight deformation when encountering vehicle rolling, thereby enhancing the compressive capacity of the structure. The top end of the reinforced gravel layer 3 is fixedly connected with an asphalt layer 5, and shaped bricks are laid inside the asphalt layer 5. The top end of the asphalt layer 5 is fixedly connected with a wearing surface 6. By using the shaped bricks inside the asphalt layer 5, the gap is exposed when the road surface breaks to facilitate repair. The compacted subgrade 1 is U-shaped. Two groups of reinforcement piles are fixedly connected to the bottom end of the support seat 203 and are respectively fixedly connected to the top ends of the geogrid step 202 and the connecting road surface 201. The support for other parts is strengthened through the geogrid step 202. Through the cooperation of the compacted subgrade 1 and the crack-blocking mechanism 2, it is convenient for soil backfilling through the geogrid step 202 to reduce the construction process, and the local connection strength is enhanced through the cooperation of the drainage box 208 and the joint grouting area 204, and the contact area with the compacted subgrade 1 is increased by using the V-shaped groove 205, thereby further improving its stability. At the same time, under the restraint of the compacted subgrade 1, the lateral deformation of the soil-rock mixture is restricted, and the load transmitted from the road surface to the subgrade is reduced, thereby improving its anti-cracking performance.

[0025] Refer to the attached drawings of the specification Figures 1-4, a threaded groove 7 is formed at the bottom end of the support base 203. A rotating threaded rod 8 is threadedly connected to the inner side wall of the threaded groove 7. The bottom end of the rotating threaded rod 8 is rotatably connected to a fixed bracket 9. The fixed bracket 9 is fixedly connected to the top end of the drainage box 208. By rotating the rotating threaded rod 8, the fixed bracket 9 is connected to the threaded groove 7. Through the cooperation of the threaded groove 7, the rotating threaded rod 8 and the fixed bracket 9, the rotation of the rotating threaded rod 8 promotes the installation of the fixed bracket 9 and the support base 203, thereby simplifying the construction components and improving the construction efficiency.

[0026] The working principle of this utility model:

[0027] Refer to the attached drawings of the specification Figures 1-4 , when this structure is in use, the earthwork backfill is facilitated through the geogrid step 202 to reduce the processes, and the local connection strength is enhanced through the cooperation of the drainage box 208 and the joint grouting solidification area 204. The V-shaped groove 205 is used to increase the contact area with the compacted base layer 1, thereby further improving its stability. At the same time, under the restraint of the compacted base layer 1, the lateral deformation of the soil-rock mixture filler is restricted, and the load transmitted from the road surface to the roadbed is reduced, thereby improving its anti-cracking performance. And when the crack blocking mechanism 2 needs to be installed, the connection between the fixed bracket 9 and the threaded groove 7 is realized by rotating the threaded rod 8, thereby promoting the installation of the fixed bracket 9 and the support base 203, thus simplifying the construction components and improving the construction efficiency. Finally, the wearing surface 6 is used to cope with the daily consumption during use, improving the convenience of maintenance, and cooperating with the original reinforced gravel layer 3 to relieve the vehicle pressure through slight deformation when encountering vehicle rolling, thereby further improving the anti-cracking ability of this structure.

[0028] Only some exemplary embodiments of the present utility model have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. An anti-cracking asphalt pavement structure, comprising a compacted subgrade (1), characterized in that: Inside the compacted base layer (1), there is a crack blocking mechanism (2). The crack blocking mechanism (2) includes a connecting road surface (201) fixedly connected to the bottom end of the compacted base layer (1). On one side of the connecting road surface (201), there is a geogrid step (202) fixedly connected. At the top of the geogrid step (202), there is a support seat (203), and a drainage box (208) is installed at the top of the support seat (203). Inside the drainage box (208), there are transverse steel bars and vertical steel bars filled. At the top of the drainage box (208), there is a joint mortar solidification area (204). On the top of the joint mortar solidification area (204), there are several groups of V-shaped grooves (205).

2. The anti-cracking asphalt pavement structure according to claim 1, characterized in that: On the inner side wall of the V-shaped groove (205), there are several groups of penetration holes (206). The penetration holes (206) communicate with the joint mortar solidification area (204). On both sides of the joint mortar solidification area (204), there are water outlet pipes (207) fixedly connected.

3. A crack-resistant asphalt pavement structure according to claim 1, characterized in that: At the top of the compacted base layer (1), there is a concrete layer (4), and a reinforcing steel wire mesh is laid inside the concrete layer (4). At the top of the concrete layer (4), there is a reinforced gravel layer (3) fixedly connected.

4. A crack-resistant asphalt pavement structure according to claim 3, characterized in that: At the top of the reinforced gravel layer (3), there is an asphalt layer (5), and shaped bricks are laid inside the asphalt layer (5). At the top of the asphalt layer (5), there is a wearing surface (6) fixedly connected.

5. A crack-resistant asphalt pavement structure according to claim 1, characterized in that: The compacted base layer (1) is U-shaped. At the bottom end of the support seat (203), there are two groups of reinforcement piles fixedly connected, and they are respectively fixedly connected to the top of the geogrid step (202) and the connecting road surface (201).

6. The anti-cracking asphalt pavement structure according to claim 1, characterized in that: At the bottom end of the support seat (203), there is a threaded groove (7). The inner side wall of the threaded groove (7) is threadedly connected with a rotating threaded rod (8). The bottom end of the rotating threaded rod (8) is rotatably connected to a fixed bracket (9). The fixed bracket (9) is fixedly connected to the top of the drainage box (208).

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