CN216663671U

CN216663671U - Highway road surface pavement structure

Info

Publication number: CN216663671U
Application number: CN202122313891.4U
Authority: CN
Inventors: 娄爱琴; 赵伟但; 葛成琴
Original assignee: Ningbo Tianma Ecological Construction Co ltd
Current assignee: Ningbo Tianma Ecological Construction Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-06-03
Anticipated expiration: 2031-09-24

Abstract

The utility model provides a road pavement structure of mating formation, includes road bed, thin stone bed course, coarse stone bed course and grid layer, the fixed road bed upper end of laying in of coarse stone bed course, the fixed coarse stone bed course upper end of laying in of thin stone bed course, and fill the coarse stone bed course, the fixed triplet soil layer of having laid in upper end of thin stone bed course, the fixed upper end of laying in triplet soil layer in grid layer, the fixed asphalt layer of having laid in upper end on grid layer. The utility model can greatly improve the strength of the roadbed and can effectively prevent the phenomenon of pothole or crack of the asphalt pavement.

Description

Highway road surface pavement structure

Technical Field

The utility model relates to the technical field of civil engineering, in particular to a road pavement structure.

Background

With the rapid development of social economy, the highway as one of the infrastructure is also rapidly developed, the social requirement for highways with high quality and high service is increasingly increased, the safety, comfort and rapidness of driving become the basic requirements of people, the highway refers to a public road which can be used for driving automobiles in cities, towns and villages and is approved and identified by a highway administration department, the highway comprises roadbeds, road surfaces, bridges, culverts and tunnels of the highway, and according to relevant regulations and technical standards of highway management, the highway is constructed according to the highway engineering technical standards specified by the state, and the public road which can be used for driving automobiles in cities, towns and villages and is approved and identified by the highway administration department.

Most of the existing road pavement paving structures directly lay asphalt layers on three-in-one soil layers, the paving mode is only suitable for rural roads or county roads with few traffic flows and lighter vehicle mass, but the phenomenon that asphalt pavements are pressed out of pits can often occur in national roads with more traffic flows and trucks, and the cost is increased in road surface maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that in the prior art, a road surface is easy to be pressed out of depressions after being used for a long time, so that normal running of vehicles on the road surface is influenced, and provides a road surface paving structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a road pavement structure of mating formation, includes road bed, thin stone bed course, coarse stone bed course and grid layer, the fixed road bed upper end of laying in of coarse stone bed course, the fixed coarse stone bed course upper end of laying in of thin stone bed course, and fill the coarse stone bed course, the fixed triplet soil layer of having laid in upper end of thin stone bed course, the fixed upper end of laying in triplet soil layer in grid layer, the fixed asphalt layer of having laid in upper end on grid layer.

Preferably, the rough stone cushion layer is a granite layer.

Preferably, the fine stone cushion layer is a natural sandstone layer.

Preferably, the three-layer soil layer is a mixed layer of crushed stone soil, coal ash and lime powder.

Preferably, the asphalt layer includes coarse grain formula asphalt concrete layer, meson formula asphalt concrete layer and fine grain formula asphalt concrete layer, coarse grain formula asphalt concrete layer is at the bottom and fixed laying on the grid layer, meson formula asphalt concrete layer is fixed laying on coarse grain formula asphalt concrete layer, fine grain formula asphalt concrete layer laying is in meson formula asphalt concrete layer upper end.

Preferably, the grid layer is a glass fiber layer.

Preferably, the coarse stone cushion layer is natural granite with the grain diameter larger than 37.5 mm.

Preferably, the grid layer has an elongation at break of less than 3%.

Compared with the prior art, the utility model provides a road pavement paving structure, which has the following beneficial effects:

1. this road pavement structure can make the gap of fine stone bed course in to the coarse stone bed course fill through laying the fine stone bed course in coarse stone bed course upper end to increase its pressurized area, realize playing fine supporting role to the road surface when in-service use, can avoid its appearance fracture and fissured as far as possible.

2. This road pavement structure lays through laying the upper end in fine stone bed course with the three soil layers to realize the intensity requirement that natural road bed is difficult to reach, realize making the intensity of road bed higher when in actual use.

3. This road pavement structure of mating formation, through the lower extreme shop grid layer on the pitch layer can avoid the pitch layer as far as possible to form sunken or the phenomenon of fracture because of the ductility of self under rolling of long-term high quality freight train.

The parts which are not involved in the device are the same as or can be realized by adopting the prior art, the utility model can greatly improve the strength of the roadbed and can effectively prevent the phenomenon of pothole or crack of the asphalt pavement.

Drawings

Fig. 1 is a schematic structural view of a pavement structure for a road according to the present invention;

FIG. 2 is a schematic view of the structure of the asphalt layer of FIG. 1;

fig. 3 is a schematic view of the soil layer structure of fig. 1.

In the figure: the concrete comprises a roadbed 1, a coarse stone cushion layer 2, a fine stone cushion layer 3, a soil layer 4, a grid layer 5, an asphalt layer 7, a coarse grain asphalt concrete layer 8, a medium grain asphalt concrete layer 9, a fine grain asphalt concrete layer 10, gravel soil 11, coal ash 12 and lime powder 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, a highway road surface pavement structure, including road bed 1, fine stone bed course 3, coarse stone bed course 2 and grid layer 5, 1 upper end in road bed is laid to coarse stone bed course 2 is fixed, and coarse stone bed course 2 is greater than 37.5 mm's natural granite for the particle diameter, because natural granite's intensity is great, consequently adopts the particle diameter to be greater than 37.5 mm's natural granite can improve the intensity of ground, and then can improve the intensity of whole road surface pavement structure.

Referring to fig. 1, thin stone bed course 3 is fixed to be laid in 2 upper ends of thick stone bed course, and fill thick stone bed course 2, the space avoids appearing as far as possible, and then avoid the problem that collapses appearing after the input use as far as possible, thin stone bed course 3 adopts natural grit to mix and forms, thin stone bed course 3 adopts the rammer to tamp after filling the inside of thick stone bed course 2 (this rammer is a machinery that is used for tamping the road surface, flatten the ground when being used for more frequently constructing, tamp, be here prior art department, the event is no longer repeated excessively), there is not the space in order to guarantee that the inside of thick stone bed course 3 does not have, avoid appearing the unstable condition of thick stone bed course 3 when laying other materials as far as possible, and then further strengthen the wholeness intensity of whole road surface structure.

Referring to fig. 1 and 3, a soil triplet 4 is fixedly laid at the upper end of the fine stone cushion layer 3, the soil triplet 4 is formed by sufficiently mixing crushed stone soil 11, coal ash 12 and lime powder 13 and adding water for stirring, the crushed stone soil 11, the coal ash 12 and the lime powder 13 can penetrate into the coarse stone cushion layer 3 for further filling after being sufficiently mixed and added with water for stirring, so that the gap in the coarse stone cushion layer 3 is avoided as much as possible during reinforcement, and the condition that the vehicle is sunken when running on a road surface for a long time is avoided as much as possible.

Referring to fig. 1, the grid layer 5 is fixedly laid on the upper end of the three-layer soil layer 4, the grid layer 5 is made of glass fiber with high anti-deformation capability, the fracture elongation is less than 3%, the anti-deformation capability of the grid layer 5 is utilized, the anti-deformation effect of the whole pavement paving structure can be effectively improved, the strength of the pavement paving structure is further ensured, and the service life of the whole pavement paving structure is further ensured.

Referring to fig. 1-2, an asphalt layer 7 is fixedly laid on the upper end of the grid layer 5, the asphalt layer 7 includes a coarse-grained asphalt concrete layer 8, a medium-grained asphalt concrete layer 9 and a fine-grained asphalt concrete layer 10, the coarse-grained asphalt concrete layer 8 is laid on the bottom and fixedly laid on the grid layer 5, the medium-grained asphalt concrete layer 9 is fixedly laid on the coarse-grained asphalt concrete layer 8, the fine-grained asphalt concrete layer 10 is laid on the upper end of the medium-grained asphalt concrete layer 9, the coarse-grained asphalt concrete layer 8 and the medium-grained asphalt concrete layer 9 can be filled in sequence by arranging the coarse-grained asphalt concrete layer 8 at the lower part, the medium-grained asphalt concrete layer 9 at the middle part and the fine-grained asphalt concrete layer 10 at the upper part, and tamping is carried out by a tamping machine after the laying, so that gaps inside the coarse particle type asphalt concrete layer 8 and the medium particle type asphalt concrete layer 9 are reduced as much as possible.

In the utility model, the characteristic of larger strength of natural granite is utilized during paving, the strength of a foundation can be improved by adopting the natural granite with the particle size larger than 37.5mm, and further the strength of the whole pavement structure can be improved, the fine stone cushion layer 3 is paved at the upper end of the coarse stone cushion layer 2, so that gaps in the coarse stone cushion layer 2 can be filled by the fine stone cushion layer 3, the pressed area of the coarse stone cushion layer 2 is increased, a good supporting effect on a pavement is realized during actual use, the coarse stone cushion layer 2 is tamped by a tamping machine after being filled by the fine stone cushion layer 3, so that no gap is formed in the coarse stone cushion layer 3, the condition that the coarse stone cushion layer 3 is unstable when other materials are paved is avoided as much as possible, the crushed stone soil 11, the coal ash 12 and the lime powder 13 are fully mixed, added with water and stirred to be paved above the fine stone cushion layer 3, so that the crushed stone soil, the coal ash 12 and the lime powder 13 can penetrate into the coarse stone cushion layer 3 to be further filled, thereby avoiding the occurrence of gaps in the coarse stone cushion 3 as much as possible while reinforcing, realizing the strength requirement which is difficult to reach by the natural roadbed by laying the three-ply soil layer 4 on the upper end of the fine stone cushion 3, realizing that the strength of the whole laying structure is higher in actual use, effectively preventing the occurrence of cracks and fissures by using the grid layer 5 with the fracture elongation rate less than 3 percent, effectively preventing the asphalt layer 7 from sinking or cracking under the rolling of a long-term high-quality truck due to the ductility of the asphalt layer 7 by laying the grid layer 5 on the lower end of the asphalt layer 7, and filling the coarse grain type asphalt concrete layer 8 and the medium grain type asphalt concrete layer 9 respectively by laying the coarse grain type asphalt concrete layer 8, the medium grain type asphalt concrete layer 9 and the fine grain type asphalt concrete layer 10 in sequence, thereby avoid the inside of grit formula asphalt concrete layer 8 and medium grain formula asphalt concrete layer 9 to have great gap as far as possible, further guaranteed the intensity of whole road surface pavement structure.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention, the technical solutions and the utility model concepts of the present invention equivalent or changed within the technical scope of the present invention.

Claims

1. The utility model provides a road pavement structure, includes road bed (1), fine stone bed course (3), coarse stone bed course (2) and grid layer (5), its characterized in that, fixed laying in road bed (1) upper end of coarse stone bed course (2), fixed laying in coarse stone bed course (2) upper end of fine stone bed course (3), and fill coarse stone bed course (2), the fixed triplet soil layer (4) of having laid in upper end of fine stone bed course (3), the fixed upper end of laying in triplet soil layer (4) of grid layer (5), the fixed asphalt layer (7) of having laid in upper end of grid layer (5).

2. A road-surfacing structure according to claim 1, characterized in that the coarse stone pad (2) is a granite layer.

3. A road-surfacing structure according to claim 1, characterized in that the fine stone mat (3) is a natural gravel layer.

4. A road pavement structure according to claim 1, characterized in that the asphalt layer (7) comprises a coarse-grained asphalt concrete layer (8), a medium-grained asphalt concrete layer (9) and a fine-grained asphalt concrete layer (10), the coarse-grained asphalt concrete layer (8) is laid on the grid layer (5) at the lowest end and is fixed, the medium-grained asphalt concrete layer (9) is fixed on the coarse-grained asphalt concrete layer (8), and the fine-grained asphalt concrete layer (10) is laid on the upper end of the medium-grained asphalt concrete layer (9).

5. A road pavement structure as claimed in claim 1, characterized in that said grid layer (5) is a glass fibre layer.

6. A pavement structure according to claim 1, characterized in that said bed of rubble (2) is natural granite with a grain size greater than 37.5 mm.

7. Pavement structure according to claim 1, characterized in that said grid layer (5) has an elongation at break of less than 3%.