Anti-cracking rib for water-stable base layer of pavement

Abstract

The utility model belongs to the technical field of pavement structures, and particularly relates to an anti-cracking rib for a pavement cement-stabilized base layer, which is characterized in that a main rib is provided with longitudinal continuous steel bars and transverse continuous steel bars, and is not provided with shrinkage joints in the transverse direction, so that a poured asphalt concrete pavement is good in integrity and high in tensile strength, and a 180-degree hook is arranged at the tail end of each steel bar of a steel bar truss; transverse constructional steel bars should be arranged within the length range of the steel bar truss, the axis of the steel bar truss is tensioned, longitudinal stressed steel bar lap joints of main ribs can be welded firmly after being bound and lapped, the overall steel bar prestress is further improved, and breakage is prevented. The straight thread steel bars are poured into the blind holes of the coarse grain type asphalt concrete layer, and the medicament layer in the blind holes is composed of quartz particles, vinyl resin and a curing agent, so that the straight thread steel bars fixed in the blind holes are reinforced and connected, and the corrosion resistance is improved; the steel bar anti-corrosion layers wrap the peripheries of the main ribs and the steel bar trusses, so that corrosion of infiltrated rainwater to the steel bars is effectively reduced, and the anti-corrosion level of the pavement is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pavement structure, and in particular relates to a pavement water-stable base anti-cracking reinforcement. Background Art

[0002] Asphalt concrete pavement is a pavement structure with a certain thickness of asphalt mixture as the surface layer on a flexible base or semi-rigid base. Compared with cement concrete pavement, this type of pavement has greatly improved strength and stability. In addition, the asphalt concrete pavement has a smooth surface without joints, low driving vibration, low noise, and easy maintenance. It is an important structural form of pavement in my country.

[0003] After searching, the publication number: CN215593531U discloses an asphalt pavement subbase with a reinforced keel structure. In the utility model, by setting lime-stabilized soil on the top surface of the lower roadbed, the top surface of the lower roadbed can be reinforced by the lime-stabilized soil, thereby enhancing the overall stability of the roadbed. The first waterproof layer is set above the upper roadbed, which can isolate the rainwater that penetrates the pavement layer and prevent rainwater from flowing into the interior of the upper roadbed, causing the upper roadbed to loosen when it encounters water. However, the corrosion resistance of this pavement is general, and the supporting capacity under long-term heavy load conditions cannot be ensured.

[0004] Therefore, a road surface water-stable base anti-cracking reinforcement is designed to solve the above problems. Utility Model Content

[0005] To solve the problems raised in the above background technology. The utility model provides a road surface water-stable base anti-cracking reinforcement. When the device is in use, the main reinforcement is equipped with longitudinal continuous steel bars and transverse continuous steel bars, and no shrinkage joints are set in the transverse direction, so that the poured asphalt concrete pavement has good integrity and high tensile strength. The steel bar ends of the steel bar truss are hard-seated with 180° hooks. Transverse structural steel bars should be set within the length of the steel bar truss. The axial tension and the longitudinal force-bearing steel bar overlaps of the main reinforcement can be tied and overlapped and then welded, thereby improving the overall prestressing of the steel bar to prevent fracture; on the other hand, the steel bar keel base at the bottom can enhance the overall supporting performance of the coarse-grained asphalt concrete layer. After the main reinforcement is firmly bonded, the straight threaded steel bar is poured into the blind hole of the coarse-grained asphalt concrete layer in conjunction with the connecting piece. The agent layer in the blind hole is composed of quartz particles, vinyl resin and curing agent, so that the straight threaded steel bar fixed in the blind hole is reinforced and connected and the corrosion resistance is improved.

[0006] The thickness of the anti-cracking layer of the coarse-grained asphalt concrete layer is 8-15mm, the thickness of the extruded polystyrene board insulation layer is 2-5cm, and the steel anti-corrosion layer can effectively reduce the temperature difference between winter and summer of the road surface, reduce shrinkage cracks and high temperature hazards; and the anti-cracking layer can improve the anti-cracking and anti-seepage properties of the coarse-grained asphalt concrete layer, and increase the service life of the road surface. The steel anti-corrosion layer is wrapped around the main reinforcement and the periphery of the steel truss, thereby effectively reducing the corrosion of the steel bars by the infiltrated rainwater and improving the corrosion resistance of the road surface.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pavement water-stabilized base anti-cracking reinforcement, including a corrosion-resistant water-stabilized base anti-break structure, the corrosion-resistant water-stabilized base anti-break structure including a steel keel base, main reinforcements, a steel truss and a coarse-grained asphalt concrete layer, the coarse-grained asphalt concrete layer is adhesively connected to the outside of the steel keel base, the main reinforcements penetrate the interior of the coarse-grained asphalt concrete layer and are bonded to the inner wall surface of the coarse-grained asphalt concrete layer, and the outside of the steel truss is welded to the surface of the main reinforcement.

[0008] As a preferred anti-cracking reinforcement for a water-stable base layer of a pavement according to the utility model, connecting plates and straight threaded steel bars are also provided on both sides of the main reinforcement, the connecting plates are threadedly connected to one side of the straight threaded steel bars, and the straight threaded steel bars are fixedly connected to the inside of the coarse-grained asphalt concrete layer.

[0009] As a preferred anti-cracking reinforcement for a water-stable base layer of a pavement according to the utility model, the interior of the coarse-grained asphalt concrete layer is further provided with blind holes matching the size of the straight threaded steel bars.

[0010] As a preferred anti-cracking reinforcement for a pavement water-stable base layer of the utility model, the interior of the blind hole is filled with a pharmaceutical layer.

[0011] As a preferred anti-cracking reinforcement for a water-stable base layer of a pavement according to the utility model, the interior of the coarse-grained asphalt concrete layer is also provided with an anti-cracking layer, an extruded polystyrene board insulation layer and a steel anti-corrosion layer, the steel anti-corrosion layer is adhesively connected to the middle of the coarse-grained asphalt concrete layer, the anti-cracking layer is adhesively connected to the top of the steel anti-corrosion layer, and the extruded polystyrene board insulation layer is adhesively connected to the bottom of the coarse-grained asphalt concrete layer.

[0012] As a preferred anti-cracking reinforcement for a pavement water-stable base layer of the utility model, the main reinforcement is a HPB300 grade wire rod-shaped steel bar material.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the main reinforcement is equipped with longitudinal continuous steel bars and transverse continuous steel bars, and no shrinkage joints are arranged in the transverse direction, so that the poured asphalt concrete pavement has good integrity and high tensile strength. The steel bar ends of the steel bar truss are hard-seated with 180° hooks. Transverse structural steel bars should be arranged within the length of the steel bar truss. The axial tension and the longitudinal force-bearing steel bar overlaps of the main reinforcement can be tied and overlapped and then welded, thereby increasing the overall prestress of the steel bar and preventing breakage.

[0015] 2. In the utility model, the steel keel base layer at the bottom can enhance the overall supporting performance of the coarse-grained asphalt concrete layer. After the main reinforcement is firmly bonded, the straight threaded steel bars are poured into the blind holes of the coarse-grained asphalt concrete layer in conjunction with the connecting pieces. The agent layer in the blind hole is composed of quartz particles, vinyl resin and curing agent, so that the straight threaded steel bars fixed in the blind hole are reinforced and connected and the corrosion resistance is improved; the steel anti-corrosion layer is wrapped around the main reinforcement and the outer periphery of the steel truss, thereby effectively reducing the corrosion of the steel bars by the infiltrated rainwater and improving the corrosion resistance of the road surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

[0018] Figure 2 It is a schematic diagram of the structure of the main reinforcement and steel truss in the utility model;

[0019] Figure 3 This is an exploded view of the straight threaded steel bar and the coarse-grained asphalt concrete layer in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure inside the blind hole in the utility model;

[0021] Figure 5 This is a cross-sectional view of the coarse-grained asphalt concrete layer of the utility model;

[0022] In the figure:

[0023] 1. Corrosion-resistant water-stabilized base anti-break structure; 11. Steel keel base; 12. Main reinforcement; 13. Steel truss; 14. Coarse-grained asphalt concrete layer; 2. Connecting piece; 3. Straight threaded steel bar; 4. Blind hole; 5. Chemical agent layer; 6. Anti-cracking layer; 7. Extruded polystyrene board insulation layer; 8. Steel anti-corrosion layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 As shown:

[0026] A road surface water-stabilized base anti-cracking reinforcement is disclosed in CN215593531U. By setting lime-stabilized soil on the top surface of the lower roadbed, the top surface of the lower roadbed can be reinforced by the lime-stabilized soil, thereby enhancing the overall stability of the roadbed. A first waterproof layer is set above the upper roadbed, so that the first waterproof layer can isolate rainwater that penetrates the road surface layer, thereby preventing rainwater from flowing into the interior of the upper roadbed and causing the upper roadbed to loosen when it encounters water. However, the corrosion resistance of this road surface is general, and the supporting capacity under long-term heavy load conditions cannot be ensured. On this basis, a corrosion-resistant water-stabilized base anti-break structure 1 is added.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown:

[0028] In an optional embodiment: the corrosion-resistant water-stabilized base anti-break structure 1 includes a steel keel base 11, main reinforcements 12, steel trusses 13 and a coarse-grained asphalt concrete layer 14, the coarse-grained asphalt concrete layer 14 is adhesively connected to the outer side of the steel keel base 11, the main reinforcements 12 penetrate the interior of the coarse-grained asphalt concrete layer 14 and are bonded to the inner wall surface of the coarse-grained asphalt concrete layer 14, the outer side of the steel trusses 13 is welded to the surface of the main reinforcements 12, and connecting plates 2 and straight threaded steel bars 3 are also provided on both sides of the main reinforcements 12, the connecting plates 2 are threadedly connected to one side of the straight threaded steel bars 3, and the straight threaded steel bars 3 are fixedly connected to the interior of the coarse-grained asphalt concrete layer 14.

[0029] In this embodiment: the main reinforcement 12 is configured with longitudinal continuous steel bars and transverse continuous steel bars, and no shrinkage joints are set in the transverse direction, so that the poured asphalt concrete pavement has good integrity and high tensile strength. The steel bar ends of the steel bar truss 13 are hard-seated with 180° hooks, and transverse structural steel bars should be set within the length of the steel bar truss 13. The axial tension and the longitudinal force-bearing steel bar overlaps of the main reinforcement 12 can be tied and overlapped and then welded, thereby improving the overall prestressing of the steel bars to prevent breakage; on the other hand, the steel bar keel base layer 11 located at the bottom can enhance the overall supporting performance of the coarse-grained asphalt concrete layer 14. After the main reinforcement 12 is firmly bonded, the straight threaded steel bar 3 is poured into the blind hole 4 of the coarse-grained asphalt concrete layer 14 in conjunction with the connecting piece 2. The agent layer 5 in the blind hole 4 is composed of quartz particles, vinyl resin and curing agent, so that the straight threaded steel bar 3 fixed in the blind hole 4 is reinforced and connected and the corrosion resistance is improved.

[0030] More specifically:

[0031] like Figure 1 and Figure 5 As shown:

[0032] In an optional embodiment: the interior of the coarse-grained asphalt concrete layer 14 is also provided with an anti-cracking layer 6, an extruded polystyrene board insulation layer 7 and a steel bar anti-corrosion layer 8, the steel bar anti-corrosion layer 8 is adhesively connected to the middle of the coarse-grained asphalt concrete layer 14, the anti-cracking layer 6 is adhesively connected to the top of the steel bar anti-corrosion layer 8, the extruded polystyrene board insulation layer 7 is adhesively connected to the bottom of the coarse-grained asphalt concrete layer 14, and the interior of the coarse-grained asphalt concrete layer 14 is also provided with a blind hole 4 matching the size of the straight threaded steel bar 3, the interior of the blind hole 4 is filled with a pharmaceutical layer 5, and the main reinforcement 12 is HPB300 grade wire rod steel material.

[0033] In this embodiment: the thickness of the anti-cracking layer 6 of the coarse-grained asphalt concrete layer 14 is 8-15 mm, the thickness of the extruded polystyrene board insulation layer 7 is 2-5 cm, and the steel anti-corrosion layer 8 can effectively reduce the temperature difference between winter and summer on the road surface, reduce shrinkage cracks and high temperature hazards; and the anti-cracking layer 6 can improve the anti-cracking and anti-seepage performance of the coarse-grained asphalt concrete layer 14, and improve the service life of the road surface. The steel anti-corrosion layer 8 is wrapped around the main reinforcement 12 and the outer periphery of the steel truss 13, thereby effectively reducing the corrosion of the infiltrated rainwater to the steel bars and improving the corrosion resistance of the road surface.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A road surface water-stable base anti-cracking reinforcement, comprising a corrosion-resistant water-stable base anti-breaking structure (1), characterized in that: The corrosion-resistant water-stable base anti-break structure (1) comprises a steel keel base (11), main reinforcements (12), a steel truss (13) and a coarse-grained asphalt concrete layer (14); the coarse-grained asphalt concrete layer (14) is adhesively connected to the outer side of the steel keel base (11); the main reinforcements (12) penetrate the interior of the coarse-grained asphalt concrete layer (14) and are bonded to the inner wall surface of the coarse-grained asphalt concrete layer (14); and the outer side of the steel truss (13) is welded to the surface of the main reinforcements (12).

2. The anti-cracking reinforcement for the pavement water-stable base layer according to claim 1 is characterized by: Connecting plates (2) and straight threaded steel bars (3) are also provided on both sides of the main reinforcement (12); the connecting plates (2) are threadedly connected to one side of the straight threaded steel bars (3); and the straight threaded steel bars (3) are fixedly connected to the inside of the coarse-grained asphalt concrete layer (14).

3. The anti-cracking reinforcement for the pavement water-stable base layer according to claim 2 is characterized by: The coarse-grained asphalt concrete layer (14) is also provided with a blind hole (4) whose size matches that of the straight threaded steel bar (3).

4. The anti-cracking reinforcement for the water-stable base of the road surface according to claim 3 is characterized by: The interior of the blind hole (4) is filled with a medicine layer (5).

5. The anti-cracking reinforcement for the pavement water-stable base layer according to claim 1 is characterized by: The coarse-grained asphalt concrete layer (14) is also provided with an anti-cracking layer (6), an extruded polystyrene board insulation layer (7) and a steel anti-corrosion layer (8); the steel anti-corrosion layer (8) is adhesively connected to the middle of the coarse-grained asphalt concrete layer (14); the anti-cracking layer (6) is adhesively connected to the top of the steel anti-corrosion layer (8); and the extruded polystyrene board insulation layer (7) is adhesively connected to the bottom of the coarse-grained asphalt concrete layer (14).

6. The anti-cracking reinforcement for the pavement water-stable base layer according to claim 2 is characterized by: The main reinforcement (12) is made of HPB300 grade wire rod-shaped steel bar material.

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