Concrete pavement in-place overlay with asphalt pavement structure
Patent Information
- Application Number
- CN202522503110.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-26
AI Technical Summary
[0003]但是旧水泥混凝土路面在常年使用下，具有断板问题、表面损坏问题、接缝问题，而后续加铺沥青路面因为直接对裂缝进行填充，没有对旧水泥混凝土路面的裂缝进行加固，可能会导致填充后的裂缝扩大，从而无法达到最佳使用效果，并且旧水泥混凝土路面经长时间使用够，结构已经不够稳定，极易出现表面材料脱离路面的情况，后加铺的沥青路面无法与旧水泥混凝土路面形成高强度结合，同样的问题也在直接对裂缝填充沥青的情况下，无法做到与旧水泥混凝土路面裂缝间形成良好结合，导致后续加铺的沥青路面也有开裂等风险
[0018]本申请通过外框体和第一抗拉伸网，设置在旧混凝土路面层与沥青路面层之间，使填充材料与第一抗拉伸网混合，形成更高强度结合的同时，使外框体和第一抗拉伸网覆盖于裂缝上方，增强裂缝位置横向抗拉伸能力，同时，使纵向加固框架向下探入旧混凝土路面层的断裂位置，纵向提升旧混凝土路面层断裂位置与后加铺的沥青路面之间的结合强度，从整体上提高混凝土路面原位加铺沥青路面的结构强度，延长路面的耐久性。
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Figure CN224884513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road construction technology, and in particular to an in-situ asphalt pavement overlay structure on concrete pavement. Background Technology
[0002] Concrete pavement, also known as cement concrete pavement, is characterized by high strength, long service life, simple construction, and low cost, and was once a common pavement structure for urban roads. However, with urban development and a surge in traffic volume, cement concrete pavements often suffer from problems such as broken slabs, surface damage, and joint issues, which are detrimental to vehicle use. Therefore, in the process of its renovation, the construction method of overlaying an asphalt concrete surface layer on the existing concrete pavement is often adopted. This avoids the construction difficulties and resource waste caused by excavating the old pavement, while improving the pavement performance and resulting in a significant improvement in the road surface.
[0003] However, old cement concrete pavements suffer from problems such as broken slabs, surface damage, and joint issues after years of use. When asphalt pavement is subsequently laid, the cracks are directly filled without reinforcing the cracks in the old cement concrete pavement. This may cause the cracks to widen after filling, thus failing to achieve the best performance. Furthermore, after prolonged use, the structure of old cement concrete pavements becomes unstable, making it prone to surface material detachment from the pavement. The newly laid asphalt pavement cannot form a strong bond with the old cement concrete pavement. Similarly, when asphalt is directly filled into cracks, it cannot form a good bond with the cracks in the old cement concrete pavement, leading to the risk of cracking in the subsequently laid asphalt pavement.
[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop in-situ asphalt pavement overlay structures for concrete pavements. Utility Model Content
[0005] The purpose of this invention is to provide an in-situ asphalt pavement structure for concrete pavement in order to solve the above-mentioned problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] The present invention relates to an in-situ asphalt pavement overlay structure for concrete pavement, comprising:
[0008] The outer frame has two sets of isolation plates on its inner side, and a first tensile mesh is connected between the outer side of the two sets of isolation plates and the inner side of the outer frame.
[0009] The longitudinal reinforcement frame is configured as two sets and is erected on the inner side of the two sets of isolation plates in a one-to-one correspondence. A second tensile mesh is connected to the inner side of the longitudinal reinforcement frame.
[0010] And an old concrete pavement layer and an asphalt pavement layer, wherein the outer frame is disposed between the old concrete pavement layer and the asphalt pavement layer;
[0011] The longitudinal reinforcement frame is used to penetrate downwards to the fracture location of the old concrete pavement layer.
[0012] Furthermore, the space between the longitudinal reinforcement frame and the fracture point of the old concrete pavement layer is filled with high-elasticity, high-viscosity modified asphalt.
[0013] Furthermore, the outer frame is erected on the old concrete pavement layer, and the inner sides of the two sets of isolation plates above the outer frame and at the fracture location of the old concrete pavement layer are used to lay the asphalt pavement layer.
[0014] Furthermore, at least two tensile bars are provided at the top of the longitudinally reinforced frame, and the two tensile bars extend laterally and support the outer frame and the isolation plate.
[0015] Furthermore, the upper surfaces of the outer frame and the isolation plate are provided with clearance slots to allow the tensile rod to pass through.
[0016] Furthermore, a limiting stop is fixedly connected to the tensile rod to lock onto the sides of the outer frame and the isolation plate to prevent the longitudinally reinforced frame from moving away from the isolation plate.
[0017] In the above technical solution, the in-situ asphalt pavement overlay structure for concrete pavement provided by this utility model has the following beneficial effects:
[0018] This application uses an outer frame and a first tensile mesh, placed between the old concrete pavement layer and the asphalt pavement layer, to mix the filler material with the first tensile mesh, forming a stronger bond. At the same time, the outer frame and the first tensile mesh cover the crack, enhancing the lateral tensile strength at the crack location. Simultaneously, the longitudinal reinforcement frame extends downwards into the fracture location of the old concrete pavement layer, longitudinally improving the bond strength between the fracture location of the old concrete pavement layer and the subsequently overlaid asphalt pavement. Overall, this improves the structural strength of the in-situ overlay of asphalt pavement on the concrete pavement and extends the pavement's durability. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1A schematic diagram of the structure of in-situ asphalt pavement overlay on concrete pavement provided in an embodiment of this utility model;
[0021] Figure 2 A top view of the longitudinal reinforcement frame of the in-situ asphalt pavement overlay structure for concrete pavement provided in this embodiment of the utility model, which is mounted on the inner side isolation plate of the outer frame.
[0022] Figure 3 This is a top view of the outer frame of the in-situ asphalt pavement overlay structure provided in an embodiment of the present utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Outer frame; 2. Separator; 3. First tensile mesh; 4. Longitudinal reinforcement frame; 5. Second tensile mesh; 6. Old concrete pavement layer; 7. Asphalt pavement layer; 8. High-elasticity and high-viscosity modified asphalt; 9. Tensile bar; 10. Avoidance groove; 11. Limiting baffle. Detailed Implementation
[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0026] Please see Figure 1-3 In-situ asphalt pavement overlay structure on concrete pavement, including:
[0027] The outer frame 1 is a rectangular frame structure. Two sets of isolation plates 2 are set on the inner side of the outer frame 1. The thickness of the isolation plates 2 is similar to that of the outer frame 1, which means they are set in the same plane to form a plate frame structure. A first tensile mesh 3 is connected between the outer side of the two sets of isolation plates 2 and the inner side of the outer frame 1. The space between the two sets of isolation plates 2 is left open for the subsequent installation of the longitudinal reinforcement frame 4.
[0028] Longitudinal reinforcement frame 4, the longitudinal reinforcement frame 4 is set in two sets and is installed on the inner side of the two sets of isolation plates 2 in a one-to-one correspondence, and the inner side of the longitudinal reinforcement frame 4 is connected to the second tensile mesh 5.
[0029] The outer frame 1 is set between the old concrete pavement layer 6 and the asphalt pavement layer 7. After the outer frame 1 is erected on the old concrete pavement layer 6, the asphalt pavement layer 7 is laid in the original position.
[0030] The longitudinal reinforcement frame 4 is used to penetrate downwards to the fracture location of the old concrete pavement layer 6.
[0031] Specifically, the first tensile mesh 3 is used when the outer frame 1 is erected on top of the old concrete pavement layer 6. The asphalt pavement layer 7 is then laid, mixing with the first tensile mesh 3 to increase the tensile strength of the asphalt pavement layer 7. Even if cracks in the old concrete pavement layer 6 increase, the tensile resistance of the asphalt pavement layer 7 can be improved, reducing the likelihood of cracks appearing on top of the old concrete pavement layer 6. Simultaneously, the first tensile mesh 3, mixed with the asphalt pavement layer 7 and adhered to the old concrete pavement layer 6, also enhances the lateral tensile strength of the old concrete pavement layer 6, further reducing the likelihood of cracks widening. The longitudinal reinforcement frame 4 extends downwards to the fracture location of the old concrete pavement layer 6 to improve the stable connection between the subsequent asphalt pavement layer 7 and the fracture location of the old concrete pavement layer 6. Furthermore, the combined transverse and longitudinal structure of the outer frame 1 and the longitudinal reinforcement frame 4, along with the laid asphalt pavement layer 7, reinforces the cracks in the old cement concrete pavement, thereby improving the overall stability of the in-situ asphalt pavement overlay structure.
[0032] Furthermore, high-elasticity and high-viscosity modified asphalt 8 is filled between the fracture location of the longitudinal reinforcement frame 4 and the old concrete pavement layer 6. After the longitudinal reinforcement frame 4 is erected, high-elasticity and high-viscosity modified asphalt 8 is first filled between the fracture location of the second tensile mesh 5 and the old concrete pavement layer 6, and then the asphalt pavement layer 7 is filled. The filling of high-elasticity and high-viscosity modified asphalt 8 improves the adhesion performance, thereby strengthening the reinforcement performance of the fracture location of the old concrete pavement layer 6.
[0033] Furthermore, the outer frame 1 is erected on the old concrete pavement layer 6, and the inner side of the two sets of isolation plates 2 above the outer frame 1 and at the fracture location of the old concrete pavement layer 6 is used to lay an asphalt pavement layer 7 so that the asphalt pavement layer 7 fills the old concrete pavement layer 6 and its fracture location.
[0034] Furthermore, at least two tensile bars 9 are provided at the top of the longitudinally reinforced frame 4, and the two tensile bars 9 extend laterally and support the outer frame 1 and the isolation plate 2.
[0035] Furthermore, the upper surfaces of the outer frame 1 and the isolation plate 2 are provided with clearance slots 10 to allow the tensile rod 9 to pass through.
[0036] Specifically, each longitudinal reinforcement frame 4 is erected above the isolation plate 2 by at least two tensile bars 9, avoiding the slot 10 to facilitate the quick and easy placement of the tensile bars 9, and the limiting effect ensures the stable placement of the tensile bars 9, ensuring the stable loading of the longitudinal reinforcement frame 4. After the asphalt pavement layer 7 is laid, the asphalt pavement layer 7 covers the tensile bars 9 and the longitudinal reinforcement frame 4 to fix the longitudinal reinforcement frame 4, thereby stabilizing and reinforcing the fracture position of the old concrete pavement layer 6 through the longitudinal reinforcement frame 4.
[0037] Furthermore, a limiting baffle 11 is fixedly connected to the tensile bar 9 to lock onto the sides of the outer frame 1 and the isolation plate 2 to prevent the longitudinal reinforcement frame 4 from moving away from the isolation plate 2. Through the limiting effect of the limiting baffle 11, the arrangement of the tensile bar 9 and the tensile strength after the asphalt pavement layer 7 is laid are more stable, further improving the fixing ability of the longitudinal reinforcement frame 4.
[0038] In summary, this application, by placing an outer frame and a first tensile mesh between the old concrete pavement layer and the asphalt pavement layer, allows the filler material to mix with the first tensile mesh, forming a higher-strength bond. Simultaneously, the outer frame and the first tensile mesh cover the crack, enhancing the lateral tensile strength at the crack location. Furthermore, the longitudinal reinforcement frame extends downwards into the fracture location of the old concrete pavement layer, longitudinally increasing the bond strength between the fracture location of the old concrete pavement layer and the subsequently overlaid asphalt pavement. Overall, this improves the structural strength of the in-situ asphalt overlay on the concrete pavement and extends the pavement's durability.
[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. An in-situ asphalt pavement overlay structure on a concrete pavement, characterized in that, include: The outer frame (1) has two sets of isolation plates (2) on its inner side, and a first tensile mesh (3) is connected between the outer side of the two sets of isolation plates (2) and the inner side of the outer frame (1). The longitudinal reinforcement frame (4) is set in two sets and is installed on the inner side of the two sets of isolation plates (2) in a one-to-one correspondence. The inner side of the longitudinal reinforcement frame (4) is connected to a second tensile mesh (5). And an old concrete pavement layer (6) and an asphalt pavement layer (7), wherein the outer frame (1) is disposed between the old concrete pavement layer (6) and the asphalt pavement layer (7); The longitudinal reinforcement frame (4) is used to penetrate downwards to the fracture location of the old concrete pavement layer (6).
2. The in-situ asphalt pavement overlay structure for concrete pavement according to claim 1, characterized in that, The fracture point between the longitudinal reinforcement frame (4) and the old concrete pavement layer (6) is filled with high-elasticity and high-viscosity modified asphalt (8).
3. The in-situ asphalt pavement overlay structure for concrete pavement according to claim 1, characterized in that, The outer frame (1) is erected on the old concrete pavement layer (6), and the two sets of isolation plates (2) above the outer frame (1) and inside the fracture location of the old concrete pavement layer (6) are used to lay the asphalt pavement layer (7).
4. The in-situ asphalt pavement overlay structure for concrete pavement according to claim 1, characterized in that, At least two tensile bars (9) are provided on the top of the longitudinally reinforced frame (4), and the two tensile bars (9) extend laterally and support the outer frame (1) and the isolation plate (2).
5. The in-situ asphalt pavement overlay structure for concrete pavement according to claim 4, characterized in that, The upper surfaces of the outer frame (1) and the isolation plate (2) are provided with clearance slots (10) for the tensile rod (9) to pass through.
6. The in-situ asphalt pavement overlay structure for concrete pavement according to claim 5, characterized in that, A limiting stop (11) is fixedly connected to the tensile rod (9) to lock on the side of the outer frame (1) and the isolation plate (2) to prevent the longitudinal reinforcement frame (4) from moving away from the isolation plate (2).