A road widening reconstruction
Patent Information
- Application Number
- CN202521385908.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-07-03
AI Technical Summary
[0003]随着生产力水平的不断提高以及生产水平的不断提高，私家车的使用也变得越来越普遍，因而曾经规划的道路便不易满足通行的要求，为了确保道路可以满足附近居民的通行要求，通常会对旧路进行改造，对旧路改造的方式通常多种多样，其中之一便是将道路中间的隔离带改造成可以通车的路面，若仅简单地将隔离带挖空并回填，通常容易出现隔离带与旧路的接缝处出现后续使用过程容易开裂的情况，因而设置一种结构来解决部分拓宽改造道路使用时容易出现开裂情况的问题
借助第一玻纤格栅实现对级配碎石层的顶面和C30素砼层底面结构强度的加强，借助第二玻纤格栅实现对C30素砼层的顶面和水泥稳定碎石层底面结构强度的加强，借助第三玻纤格栅实现对水泥稳定碎石层的顶面和SUP沥青混合层底面结构强度的加强，使得级配碎石层、C30素砼层、水泥稳定碎石层和SUP沥青混合层的结构强度和防裂性能更好，进而确保结构整体的防裂性能更加稳定。
Smart Images
Figure CN224901919U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road technology, and more specifically, to a method for widening and modifying roads. Background Technology
[0002] Roads refer to highways, urban roads, and places within the jurisdiction of an organization that allow public motor vehicle traffic, including squares, public parking lots, and other places used for public passage.
[0003] With the continuous improvement of productivity and production levels, the use of private cars has become increasingly common. As a result, roads that were originally planned are no longer sufficient to meet traffic requirements. In order to ensure that roads can meet the traffic needs of nearby residents, old roads are usually renovated. There are various ways to renovate old roads. One of them is to transform the median strip into a road surface that can be driven on. If the median strip is simply dug up and backfilled, cracks are likely to occur at the joint between the median strip and the old road during subsequent use. Therefore, a structure is set up to solve the problem of cracking that easily occurs when widening and renovating roads.
[0004] Therefore, a new solution is needed to address this problem. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a way to widen and modify roads.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a road widening and reconstruction method, including an old road foundation and an old road body laid on the old road foundation, wherein a backfill pit extending to the top surface of the old road foundation is excavated on the old road body, and the backfill pit is filled with a graded crushed stone layer, a first fiberglass grid, a C30 plain concrete layer, a second fiberglass grid, a cement-stabilized crushed stone layer, a third fiberglass grid and a SUP asphalt mixture layer arranged sequentially from bottom to top, wherein the top surface of the SUP asphalt mixture layer is flush with the top surface of the old road body.
[0007] The present invention is further configured such that: the backfill pit includes a first pit, a second pit, a third pit and a fourth pit arranged sequentially from bottom to top, the width of the first pit, the second pit, the third pit and the fourth pit increasing from bottom to top, and the graded crushed stone layer, the C30 plain concrete layer, the cement stabilized crushed stone layer and the SUP asphalt mixture layer filling the first pit, the second pit, the third pit and the fourth pit one by one.
[0008] The present invention is further configured such that: the width of the first fiberglass grid is the same as the width of the second pit and covers the opening of the first pit; the width of the second fiberglass grid is the same as the width of the third pit and covers the opening of the second pit; and the width of the third fiberglass grid is the same as the width of the fourth pit and covers the opening of the third pit.
[0009] The present invention is further configured such that: the top surface of the SUP asphalt mixture layer and the top surface of the old road subgrade are covered with an SMA asphalt mixture layer.
[0010] The present invention is further configured such that a fourth fiberglass grid is provided between the top surface of the SMA asphalt mixture layer and the top surface of the SUP asphalt mixture layer and the top surface of the old road foundation.
[0011] The present invention is further configured such that: the thickness of the graded crushed stone layer is 20cm, the thickness of the C30 plain concrete layer is 40cm, the thickness of the cement-stabilized crushed stone layer is 18cm, the thickness of the SUP asphalt mixture layer is 8cm, and the thickness of the SMA asphalt mixture layer is 4cm.
[0012] In summary, this utility model has the following beneficial effects: The first fiberglass grid strengthens the structural strength of the top surface of the graded crushed stone layer and the bottom surface of the C30 plain concrete layer. The second fiberglass grid strengthens the structural strength of the top surface of the C30 plain concrete layer and the bottom surface of the cement-stabilized crushed stone layer. The third fiberglass grid strengthens the structural strength of the top surface of the cement-stabilized crushed stone layer and the bottom surface of the SUP asphalt mixture layer. This results in better structural strength and crack resistance of the graded crushed stone layer, C30 plain concrete layer, cement-stabilized crushed stone layer and SUP asphalt mixture layer, thereby ensuring more stable overall crack resistance of the structure. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0014] In the diagram: 1. Old road foundation; 2. Old road body; 3. Graded crushed stone layer; 4. First fiberglass grid; 5. C30 plain concrete layer; 6. Second fiberglass grid; 7. Cement-stabilized crushed stone layer; 8. Third fiberglass grid; 9. SUP asphalt mixture layer; 10. First pothole; 11. Second pothole; 12. Third pothole; 13. Fourth pothole; 14. SMA asphalt mixture layer; 15. Fourth fiberglass grid. Detailed Implementation
[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0016] One method is to widen and renovate roads, such as Figure 1 and Figure 2 As shown, the road includes an old road foundation 1 and an old road body 2 laid on the old road foundation 1. A backfill pit extending to the top surface of the old road foundation 1 is excavated on the old road body 2. The backfill pit is filled with a graded crushed stone layer 3, a first fiberglass grid 4, a C30 plain concrete layer 5, a second fiberglass grid 6, a cement-stabilized crushed stone layer 7, a third fiberglass grid 8, and a SUP asphalt mixture layer 9 arranged sequentially from bottom to top. The top surface of the SUP asphalt mixture layer 9 is flush with the top surface of the old road body 2. The top surface of the graded crushed stone layer 3 is achieved by the first fiberglass grid 4. The structural strength of the bottom surface of the C30 plain concrete layer 5 is enhanced by the second fiberglass grid 6, and the structural strength of the top surface of the C30 plain concrete layer 5 and the bottom surface of the cement-stabilized crushed stone layer 7 is enhanced by the third fiberglass grid 8. This results in better structural strength and crack resistance of the graded crushed stone layer 3, C30 plain concrete layer 5, cement-stabilized crushed stone layer 7 and SUP asphalt mixture layer 9, thereby ensuring more stable overall crack resistance of the structure.
[0017] like Figure 2 As shown, the backfill pits include a first pit 10, a second pit 11, a third pit 12, and a fourth pit 13 arranged sequentially from bottom to top. The width of the first pit 10, the second pit 11, the third pit 12, and the fourth pit 13 increases from bottom to top. The graded crushed stone layer 3, the C30 plain concrete layer 5, the cement-stabilized crushed stone layer 7, and the SUP asphalt mixture layer 9 are filled into the first pit 10, the second pit 11, the third pit 12, and the fourth pit 13 one by one. This arrangement can increase the connection area between the graded crushed stone layer 3, the C30 plain concrete layer 5, the cement-stabilized crushed stone layer 7, and the SUP asphalt mixture layer 9 and the old road body 2. At the same time, it can enable the solid part of the old road body 2 to better achieve stable support and restraint for the C30 plain concrete layer 5, the cement-stabilized crushed stone layer 7, and the SUP asphalt mixture layer 9.
[0018] like Figure 2 As shown, the width of the first fiberglass grid 4 is the same as the width of the second pit 11 and covers the opening of the first pit 10. The width of the second fiberglass grid 6 is the same as the width of the third pit 12 and covers the opening of the second pit 11. The width of the third fiberglass grid 8 is the same as the width of the fourth pit 13 and covers the opening of the third pit 12. The inner bottom surface of the second pit 11 provides stable support and limit for the first fiberglass grid 4. The inner bottom surface of the third pit 12 provides stable support and limit for the second fiberglass grid 6. The inner bottom surface of the fourth pit 13 provides stable support and limit for the third fiberglass grid 8. This makes the positions of the first fiberglass grid 4, the second fiberglass grid 6, and the third fiberglass grid 8, as well as their functions, more stable.
[0019] like Figure 2As shown, an SMA asphalt mixture layer 14 is laid on the top surface of the SUP asphalt mixture layer 9 and the top surface of the old road foundation 1. A fourth fiberglass grid 15 is provided between the top surface of the SMA asphalt mixture layer 14 and the top surface of the SUP asphalt mixture layer 9 and the top surface of the old road foundation 1. The fourth fiberglass grid 15 is used to strengthen the structural strength of the top surface of the SUP asphalt mixture layer 9 and the bottom surface of the SMA asphalt mixture layer 14, so that the crack resistance of the SUP asphalt mixture layer 9 and the SMA asphalt mixture layer 14 is better, and thus the overall structural strength and crack resistance of the structure are more stable. The thickness of the graded crushed stone layer 3 is 20cm, the thickness of the C30 plain concrete layer 5 is 40cm, the thickness of the cement stabilized crushed stone layer 7 is 18cm, the thickness of the SUP asphalt mixture layer 9 is 8cm, and the thickness of the SMA asphalt mixture layer 14 is 4cm.
[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A method for widening and renovating a road, comprising an old roadbed (1) and an old road body (2) laid on the old roadbed (1), characterized in that: A backfill pit extending to the top surface of the old road foundation (1) is excavated on the old road body (2). The backfill pit is filled with a graded crushed stone layer (3), a first fiberglass grid (4), a C30 plain concrete layer (5), a second fiberglass grid (6), a cement-stabilized crushed stone layer (7), a third fiberglass grid (8), and a SUP asphalt mixture layer (9) arranged sequentially from bottom to top. The top surface of the SUP asphalt mixture layer (9) is flush with the top surface of the old road body (2). The backfill pits include a first pit (10), a second pit (11), a third pit (12), and a fourth pit (13) arranged sequentially from bottom to top. The widths of the first pit (10), the second pit (11), the third pit (12), and the fourth pit (13) increase from bottom to top. The graded crushed stone layer (3), the C30 plain concrete layer (5), the cement-stabilized crushed stone layer (7), and the SUP asphalt mixture layer (9) are filled into the first pit (10), the second pit (11), the third pit (12), and the fourth pit (13) one by one. The width of the first fiberglass grid (4) is the same as the width of the second pit (11) and covers the opening of the first pit (10). The width of the second fiberglass grid (6) is the same as the width of the third pit (12) and covers the opening of the second pit (11). The width of the third fiberglass grid (8) is the same as the width of the fourth pit (13) and covers the opening of the third pit (12). The thickness of the graded crushed stone layer (3) is 20cm, the thickness of the C30 plain concrete layer (5) is 40cm, the thickness of the cement-stabilized crushed stone layer (7) is 18cm, and the thickness of the SUP asphalt mixture layer (9) is 8cm.
2. The method for widening and renovating a road according to claim 1, characterized in that: The top surface of the SUP asphalt mixture layer (9) and the top surface of the old road subgrade (1) are covered with an SMA asphalt mixture layer (14), the thickness of which is 4cm.
3. The method for widening and renovating a road according to claim 2, characterized in that: A fourth fiberglass grid (15) is provided between the top surface of the SMA asphalt mixture layer (14) and the top surface of the SUP asphalt mixture layer (9) and the top surface of the old road foundation (1).