Anti-crack asphalt pavement
By setting a downwardly recessed connecting component in the connection area of the asphalt pavement, the reinforcing mesh is connected to the connecting component, which solves the problem of pavement cracks during half-width construction and realizes the overall connection of the reinforcing mesh and protection during the construction process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-03-17
AI Technical Summary
During half-width construction, existing technologies are insufficient to effectively prevent cracks from appearing at the connection points of the asphalt pavement, and it is difficult for reinforcement materials to connect across the two half-widths of the pavement.
A recessed connecting component is installed in the connection area of the asphalt pavement. The reinforcing mesh of the two halves of the pavement is connected by the connecting component. The connecting component is pre-embedded in the base layer or a protective plate is installed on the surface to avoid damage to the connecting component when cutting the joint.
This method prevents cracks at the joints during half-width construction, ensures the reinforcement mesh is connected as a whole, avoids damage to the connecting components during construction, and maintains the integrity of the road surface.
Smart Images
Figure CN224001734U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road technology, specifically to a crack-resistant asphalt pavement. Background Technology
[0002] Asphalt pavement is a crucial component of urban transportation infrastructure. Under repeated vehicle loads, cracks and potholes can develop, requiring periodic replacement or maintenance when the pavement is damaged. Because urban roads handle significant traffic demand, complete road closures for construction would severely disrupt traffic flow. In practice, a common practice is to divide a two-way road into two halves, constructing one half while maintaining traffic flow on the other. This method, with independent construction between the two halves, easily leads to cracks at the junction, and the reinforcing materials typically used to prevent asphalt pavement cracking often cannot span across the two halves. Utility Model Content
[0003] To address the above shortcomings, the purpose of this invention is to provide a crack-resistant asphalt pavement that prevents the reinforcement mesh from being cut during the removal of dust from the joint of half-width construction. By setting a downwardly recessed connecting component in the connection area of the half-width pavement, it is possible to remove part of the asphalt at the joint through cutting while avoiding cutting the bottom connecting component, and then connecting the reinforcement materials of the two half-width pavements through the connecting component.
[0004] Therefore, the present invention provides a crack-resistant asphalt pavement, including a surface layer, which is divided into a first zone and a second zone along the width of the road, and a reinforcing mesh is laid in the first zone and the second zone respectively. It also includes a connecting component, which is connected to the reinforcing mesh in the first zone and the second zone.
[0005] Furthermore, the connecting component includes a rib, the rib including a bottom, the bottom being disposed in the connecting area of the first and second zones or at the lower part of the connecting area.
[0006] Furthermore, it also includes a base layer, wherein the surface layer is made of asphalt and laid on the base layer, and the bottom layer is located in the base layer.
[0007] Furthermore, the rib includes an upper convex portion, with upper convex portions on both sides of the bottom. The upper convex portions on both sides extend into the first and second zones of the surface layer, respectively, and the upper convex portions are connected to the reinforcing mesh provided in the first or second zone.
[0008] Furthermore, the surface layer is provided with several connecting components, each including several parallel ribs, and the end of the upper protrusion is provided with connecting ribs that connect multiple ribs of the same connecting component.
[0009] The connecting component may also include the following technical solution: each of the first and second areas is provided with a corresponding L-shaped rib, and the bottoms of the corresponding ribs are connected to each other.
[0010] Furthermore, a protective plate is installed above the bottom of the reinforcing bar, and asphalt is laid on the protective plate. The protective plate is used to protect the bottom of the reinforcing bar when the half-width construction is cut.
[0011] Furthermore, the protective plate includes a left half and a right half, which are rotatably connected. When the asphalt on the protective plate is removed by cutting, the left half or the right half of the protective plate can be rotated to expose the underlying reinforcing bar for easy connection with another reinforcing bar.
[0012] Furthermore, the corresponding ribs in the first and second zones are connected using threaded pipes.
[0013] The beneficial technical effects of this utility model are as follows:
[0014] (1) The present invention provides a crack-resistant asphalt pavement, wherein a downwardly recessed connecting component is provided in the connection area of half of the pavement. When half-width construction is adopted, a reinforcing mesh is first laid on one half of the pavement and connected to the connecting component before asphalt is laid. When constructing the other half of the pavement, it is necessary to cut off the joint on the half of the pavement that has been replaced or maintained to prevent the floating dust on the joint from causing cracks. The connecting component is recessed to at least the bottom of the surface layer. When cutting, the connecting component can be avoided and part of the asphalt in the joint area can be removed.
[0015] (2) In a specific embodiment of this utility model, the connecting component can be pre-embedded in the base layer, and only the surface layer is removed during the cutting process, so as to avoid damaging the reinforcing bars. In another embodiment, the connecting component can also be embedded during half-width construction, with its bottom set on the surface of the base layer and a protective plate set for protection to prevent it from being cut. After cutting, the protective plate is opened to connect the reinforcing bars in the completed road surface and then the construction of the half-width road is carried out, connecting the reinforcing materials in the two half-width roads into a whole, so as to avoid cracks in the asphalt pavement. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of Example 1;
[0017] Figure 2 This is a cross-sectional schematic diagram of the connecting component in Embodiment 1;
[0018] Figure 3 This is a schematic diagram of the connecting components in Example 2;
[0019] Figure 4 This is a schematic diagram of the connection components in Example 2.
[0020] Explanation of reference numerals in the attached drawings: 1. Base layer; 2. Surface layer; 201. First zone; 202. Second zone; 3. Connecting component; 301. Bottom; 302. Upper protrusion; 303. Connecting rib; 4. Protective plate. Detailed Implementation
[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0022] Reference Figures 1 to 4 As shown, a specific embodiment of the anti-crack asphalt pavement of this utility model includes a surface layer 2 and a base layer 1. The base layer 1 is made of cement concrete, and the surface layer 2 is placed on top of the base layer 1 and is paved with asphalt. When replacing or maintaining asphalt pavement, half-width construction is usually adopted, that is, half of the pavement (half-width road surface) is first treated by removing asphalt and repaving, and after the construction of this half-width road surface is completed and traffic is restored, and then the other half of the road surface is constructed. This construction method can maintain a certain traffic capacity of the road. In this embodiment, the division of the first zone 201 and the second zone 202 of the pavement is only from the perspective of construction. Generally, the center line of the road is used as the boundary, but it is also feasible not to use the center line of the road for construction. When carrying out half-width construction of the first zone 201 and the second zone 202 of the pavement, after removing the old asphalt pavement, a reinforcing mesh is set on the surface of the base layer. If the base layer is damaged, the reinforcing mesh is laid after the base layer is repaired, and then the asphalt pavement is laid. Because the other half of the road is still open to traffic, and the half-width construction only works on half of the road, the first half of the asphalt pavement to be completed will accumulate dust. In existing technology, when constructing the other half of the road, a portion of the asphalt at the joint needs to be cut off before laying new asphalt and connecting it to the cut asphalt half of the other road. (Refer to...) Figure 1 and Figure 2 As shown, in Embodiment 1 of this utility model, a portion of the connecting component 3 is pre-embedded in the concrete base layer 1. The connecting component 3 has upper protrusions 302 extending into the surface layer 2 at positions near the connection area in the first zone 201 and the second zone 202, respectively. In this way, the reinforcing mesh laid in the road surface can be connected to the upper protrusions 302. The reinforcing mesh is typically made of wire mesh or grating, and the connecting component 3 can be made of reinforcing bars. The connecting component and the reinforcing mesh can be welded or bound with wire. During the cutting process, the asphalt in the surface layer 2 is generally removed without cutting into the connecting component 3 in the base layer 1. This ensures that the reinforcing meshes on both sides can be connected to form a whole through the connecting component without being affected by the cutting.
[0023] Reference Figure 1 and Figure 2As shown, in the above embodiment 1, the connecting component 3 includes a rib, the rib is concave in shape, the bottom 301 of the rib corresponds to the joint position of the first area 201 and the second area 202, and is embedded in the base layer 1. In fact, the cut is not strictly along the center line, so the length of the bottom 301 of the rib inserted in the base layer 1 makes the upper convex part 302 a certain distance away from the center line.
[0024] Reference Figure 1 and Figure 2 As shown in the above embodiment 1, a number of connecting components 3 are provided in the surface layer 2. Adjacent connecting components 3 are spaced a certain distance apart, generally at equal intervals. Each connecting component 3 includes a number of parallel ribs. The ribs are perpendicular to the length direction of the road surface. A connecting rib 303 is provided at the end of the upper protrusion 302 to connect multiple ribs of the same connecting component 3 together.
[0025] Reference Figure 3 and Figure 4 As shown, the specific embodiment 2 of this utility model is basically the same as embodiment 1, except that in embodiment 2, each of the first zone 201 and the second zone 202 is provided with corresponding L-shaped reinforcing bars. The bottom 301 of the reinforcing bars is provided on the surface of the base layer 1. The bottom 301 of the corresponding reinforcing bars of the two half-widths of the road surface are connected by welding or by using threaded pipe threads. When cutting the joint, it is necessary to avoid cutting the reinforcing bars. If the reinforcing bars are cut by the joint, the asphalt near the reinforcing bars needs to be removed, and another longer reinforcing bar is welded to the reinforcing bar.
[0026] In the above embodiment 2, referring to Figure 3 and Figure 4 As shown, to avoid damage to the reinforcing bars during cutting, a protective plate 4 can be installed above the bottom 301 of the reinforcing bars. Asphalt is laid on the protective plate 4, which protects the bottom 301 of the reinforcing bars when cutting is carried out during half-width construction. Furthermore, the protective plate may include a left half and a right half, which are rotatably connected. This allows either the left or right half of the protective plate to be exposed when the asphalt is removed during cutting, facilitating connection to another reinforcing bar by exposing the exposed reinforcing bar.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A crack-preventing asphalt pavement comprising a surface layer, the surface layer being divided into a first zone and a second zone in a width direction of a road, characterized in that: The first area and the second area are respectively paved with reinforcing meshes, and further comprise connecting components connected with the reinforcing meshes in the first area and the second area.
2. The anti-crack asphalt pavement according to claim 1, characterized in that: The connecting components comprise reinforcing bars, and the reinforcing bars comprise bottoms arranged in the connecting areas or lower parts of the connecting areas of the first area and the second area.
3. The anti-crack asphalt pavement according to claim 2, characterized in that: Further comprising a base layer, and the surface layer is paved on the base layer by using asphalt, and the bottoms are arranged in the base layer.
4. The anti-crack asphalt pavement according to claim 3, characterized in that: The reinforcing bars comprise upper convex parts, and the two sides of the bottoms are the upper convex parts, the upper convex parts of the two sides respectively extend into the first area and the second area of the surface layer, and the upper convex parts are connected with the reinforcing meshes arranged in the first area or the second area.
5. The anti-cracking asphalt pavement according to claim 4, characterized in that: The surface layer is provided with a plurality of connecting components, the connecting components comprise a plurality of reinforcing bars arranged in parallel, and the ends of the upper convex parts are provided with connecting bars to connect a plurality of reinforcing bars of the same connecting component.
6. The anti-crack asphalt pavement according to claim 2, characterized in that: Corresponding L-shaped reinforcing bars are arranged in the first area and the second area, and the bottoms of the corresponding reinforcing bars are connected with each other.
7. The anti-cracking asphalt pavement according to claim 6, characterized in that: Protective plates are arranged above the bottoms of the reinforcing bars, and the asphalt is paved on the protective plates, and the protective plates are used to protect the bottoms of the reinforcing bars when the half-width construction is performed.
8. The anti-cracking asphalt pavement according to claim 7, characterized in that: The protective plates comprise left halves and right halves, and the left halves and the right halves are rotationally connected, and when the asphalt on the protective plates is removed for cutting joints, the left halves or the right halves of the protective plates are rotated to expose the underlying reinforcing bars to facilitate the connection with another reinforcing bar.
9. A crack-resistant asphalt pavement as claimed in any one of claims 6 to 8, characterized in that: The reinforcing bars of the first area and the second area are connected by using threaded pipes.