Edge widening structure for old pavement reconstruction

Abstract

The utility model relates to the technical field of road reconstruction construction, in particular to an old pavement reconstruction edge widening structure, an old pavement is sequentially composed of an original roadbed, an original cushion layer, an original base layer and an original surface layer from bottom to top, the old pavement comprises a V-shaped groove, the V-shaped groove is formed in one side of the old pavement, and the side, corresponding to the V-shaped groove, of the old pavement is of a step structure; the backfill base material is arranged in the V-shaped groove, and the top of the backfill base material is flush with the top of the original roadbed; the new base layer is paved on the top of the new cushion layer and is flush with the top of the original base layer; and the new surface layer is paved at the top of the new base layer and is flush with the top of the original surface layer. The V-shaped groove is used for burying backfill base materials, the problem of waste treatment is solved, meanwhile, soil taken out when the V-shaped groove is formed is used for forming a new roadbed, and therefore stability and consistency of structural materials of a broadened part are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of road reconstruction and construction technology, specifically to a structure for widening the edge of an old road surface during reconstruction. Background Technology

[0002] Currently, in the field of engineering construction, the need to renovate old cement pavements to improve their performance and service life is becoming increasingly prominent. Traditional construction methods mainly involve the demolition and repaving of old cement pavements, usually converting them to asphalt pavements to improve their strength and durability. However, this traditional renovation method has a series of problems in practical applications.

[0003] First, the demolition of old cement roads generates a large amount of waste, causing environmental pollution and resource waste. Disposing of this waste requires additional costs and resources, and also has adverse effects on the surrounding environment.

[0004] Secondly, traditional renovation methods often face problems such as weak connections and uneven structures when connecting new and old road surfaces. Due to the differences between the old and new materials, cracks and breaks are prone to occur at the connection points, reducing the overall stability and durability of the structure. Utility Model Content

[0005] This utility model provides a widening structure for the edge of an old road surface renovation. The V-shaped groove is used for burying backfill material, which solves the problem of waste disposal. At the same time, the soil removed when the V-shaped groove is opened is used to form a new roadbed, thereby ensuring the stability and consistency of the structural materials of the widened part.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a widening structure for the edge of an old road surface, wherein the old road surface is composed of an original roadbed, an original subbase, an original base course, and an original surface course from bottom to top, comprising: a V-shaped groove, wherein the V-shaped groove is formed on one side of the old road surface, and the side of the old road surface corresponding to the V-shaped groove has a stepped structure; backfill material, wherein the backfill material is placed in the V-shaped groove, and the top of the backfill material is flush with the top of the original roadbed; a first steel mesh, wherein the first steel mesh is horizontally placed on top of the backfill material, and one end of the first steel mesh covers the top of the original roadbed; a new subbase, wherein the new subbase is laid on top of the first steel mesh and is flush with the top of the original subbase; a new base course, wherein the new base course is laid on top of the new subbase and is flush with the top of the original base course; and a new surface course, wherein the new surface course is laid on top of the new base course and is flush with the top of the original surface course.

[0007] Preferably, it further includes a second steel mesh, which is horizontally disposed between the new subbase and the new base layer, and one end of the second steel mesh covers the top of the original subbase.

[0008] Preferably, it further includes a third steel mesh, which is horizontally disposed between the new base layer and the new surface layer, and one end of the third steel mesh covers the top of the original base layer.

[0009] Preferably, it also includes a plurality of U-shaped nails that penetrate the third steel mesh and extend downward.

[0010] The beneficial effects of this utility model are as follows: The edges of the original subbase, base course, and surface course cut from the old road surface are used as backfill material and buried in the V-shaped groove, thus solving the waste disposal problem. Simultaneously, the soil removed during the creation of the V-shaped groove forms a new roadbed, ensuring the structural material stability and consistency of the widened section. The first steel mesh placed at the bottom of the new subbase not only does not affect the adhesion between the new subbase and the backfill material, but also utilizes its tensile strength to ensure the horizontal tension between the new subbase and the original roadbed, preventing the widened section from separating from the old road, thereby improving the overall integrity of the widened road. The second steel mesh placed at the bottom of the new base course not only does not affect the adhesion between the new base course and the new subbase, but also utilizes its tensile strength to ensure the horizontal tension between the new base course and the original subbase, preventing the widened section from separating from the old road, thereby improving the overall integrity of the widened road. The third steel mesh, placed at the bottom of the new surface layer, not only does not affect the adhesion between the new surface layer and the new base layer, but also utilizes its tensile strength to ensure the horizontal tension between the new surface layer and the original base layer, preventing the widened section from splitting with the old road, thus improving the overall integrity of the widened road. Since the junction of the new and old pavement is a stepped section, U-shaped nails and the third steel mesh are used to achieve positioning constraints between the new and old pavement, effectively preventing splitting at the junction. Furthermore, the U-shaped nails corresponding to the middle of the third steel mesh can penetrate downwards through the second and first steel meshes, thus effectively improving the overall integrity of the new pavement structure. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram showing the position of the V-groove in this utility model;

[0013] Figure 2 A schematic diagram showing the position of the first steel mesh of this utility model;

[0014] Figure 3A schematic diagram showing the position of the second reinforcing mesh of this utility model;

[0015] Figure 4 A schematic diagram showing the position of the third steel mesh of this utility model;

[0016] Figure 5 This is a schematic diagram showing the completed process of the main road surface of this utility model.

[0017] In the diagram: 1. Original roadbed; 2. Original subbase; 3. Original base course; 4. Original surface course; 5. V-groove; 6. Backfill material; 7. New roadbed; 8. First steel mesh; 9. New subbase; 10. New base course; 11. New surface course; 12. Second steel mesh; 13. Third steel mesh; 14. U-shaped nail. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a road surface widening structure for old road reconstruction is provided. The old road surface is composed of an original roadbed 1, an original subbase 2, an original base course 3, and an original surface course 4 from bottom to top. It includes: a V-shaped groove 5, which is formed on one side of the old road surface, and the side of the old road surface corresponding to the V-shaped groove 5 has a stepped structure; backfill material 6, which is placed inside the V-shaped groove 5, and the top of the backfill material 6 is flush with the top of the original roadbed 1; a first steel mesh 8, which is horizontally placed on top of the backfill material 6, and one end of the first steel mesh 8 covers the top of the original roadbed 1; a new subbase 9, which is laid on top of the first steel mesh 8 and is flush with the top of the original subbase 2; a new base course 10, which is laid on top of the new subbase 9 and is flush with the top of the original base course 3; and a new surface course 11, which is laid on top of the new base course 10 and is flush with the top of the original surface course 4.

[0020] During the road widening construction, V-shaped grooves 5 are created at the edge of the original road. Simultaneously, the edges of the original subbase 2, original base course 3, and original surface course 4, cut from the old road surface, are used as backfill material 6 and filled into the V-shaped grooves 5 for burial, thus solving the waste disposal problem. Furthermore, the soil removed during the creation of the V-shaped grooves 5 is compacted at the edge of the original roadbed 1 to form a new roadbed 7, ensuring the structural material stability and consistency of the widened section. The first steel mesh 8, placed at the bottom of the new subbase 9, not only does not affect the adhesion between the new subbase 9 and the backfill material 6, but also utilizes its tensile strength to ensure the horizontal tension between the new subbase 9 and the original roadbed 1, preventing the widened section from separating from the old road, thereby improving the overall integrity of the widened road.

[0021] It also includes a second steel mesh 12, which is horizontally arranged between the new cushion layer 9 and the new base layer 10, and one end of the second steel mesh 12 covers the top of the original cushion layer 2.

[0022] The second steel mesh 12 set at the bottom of the new base layer 10 not only does not affect the adhesion between the new base layer 10 and the new subbase 9, but also uses its own tensile strength to ensure the horizontal tension between the new base layer 10 and the original subbase 2, avoiding the problem of separation between the newly widened part and the old road, thereby improving the integrity of the widened road.

[0023] It also includes a third steel mesh 13, which is horizontally arranged between the new base layer 10 and the new surface layer 11, and one end of the third steel mesh 13 covers the top of the original base layer 3.

[0024] The third steel mesh 13 set at the bottom of the new surface layer 11 not only does not affect the adhesion between the new surface layer 11 and the new base layer 10, but also uses its own tensile strength to ensure the horizontal tension between the new surface layer 11 and the original base layer 3, avoiding the problem of separation between the newly widened part and the old road, thereby improving the integrity of the widened road.

[0025] It also includes multiple U-shaped nails 14 that penetrate the third steel mesh 13 and extend downwards.

[0026] Since the junction between the new and old pavements has a stepped profile, U-shaped nails 14 and the third steel mesh 13 are used to achieve positioning constraints between the new and old pavements, effectively preventing splitting at the junction. In addition, the U-shaped nails 14 corresponding to the middle of the third steel mesh 13 can also penetrate downwards through the second steel mesh 12 and the first steel mesh 8, thus effectively improving the overall integrity of the new pavement structure.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A structure for widening the edge portion of a reconstructed old pavement, the old pavement being composed of an original subgrade (1), an original cushion layer (2), an original base layer (3), and an original surface layer (4) in this order from the bottom, characterized in that, Comprise: V-shaped groove (5), the V-shaped groove (5) is opened in the old pavement one side, the old pavement corresponds the V-shaped groove (5) one side is the ladder structure; Backfill base (6), the backfill base (6) is set in the V-shaped groove (5), and the backfill base (6) top is flush with the original roadbed (1) top; First steel bar net (8), the first steel bar net (8) is horizontally set in the backfill base (6) top, and one end of the first steel bar net (8) covers the original roadbed (1) top; New cushion layer (9), the new cushion layer (9) is paved in the first steel bar net (8) top, and is flush with the original cushion layer (2) top; New base layer (10), the new base layer (10) is paved in the new cushion layer (9) top, and is flush with the original base layer (3) top; New surface layer (11), the new surface layer (11) is paved in the new base layer (10) top, and is flush with the original surface layer (4) top.

2. The edge widening structure for reconstruction of an old pavement according to claim 1, characterized by: Still include second steel bar net (12), the second steel bar net (12) is horizontally set between the new cushion layer (9) and the new base layer (10), and one end of the second steel bar net (12) covers the original cushion layer (2) top.

3. The edge widening structure for reconstruction of an old pavement according to claim 2, characterized in that: Still include third steel bar net (13), the third steel bar net (13) is horizontally set between the new base layer (10) and the new surface layer (11), and one end of the third steel bar net (13) covers the original base layer (3) top.

4. The edge widening structure for reconstruction of an old pavement according to claim 3, characterized in that: Still include multiple U-shaped nails (14) that extend through the third steel bar net (13) and extend downward.

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