CN217781614U

CN217781614U - Asphalt pavement structure with large-particle-size asphalt mixture

Info

Publication number: CN217781614U
Application number: CN202222093754.9U
Authority: CN
Inventors: 李成杰; 张炳银; 陈贝贝; 王成辉; 李富安
Original assignee: Tianyuan Construction Group Co Ltd; Veterans Shandong Construction Group Co Ltd
Current assignee: Tianyuan Construction Group Co Ltd; Veterans Shandong Construction Group Co Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-11
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a bituminous paving structure that possesses big particle size bituminous mixture, include from last top layer, basic unit, subbase extremely down, the top layer is taken and is watered the big particle size bituminous mixture bed between two marginal zones by the border of road surface edge and lay big particle size bituminous mixture bed below and the restriction layer that is located the basic unit top is constituteed. The utility model discloses a lay big particle diameter bituminous mixture on the top layer, and big particle diameter bituminous mixture has great plasticity, shearing deformation and better anti rutting ability, can bear heavier vehicle, and then avoid the road surface to damage too fast, it can avoid big particle diameter bituminous mixture to remove to be provided with the border area simultaneously, and lead to the road surface to sink, and set up the stone layer and avoid big particle diameter bituminous mixture's flow and lead to certain department on road surface to fill unrealistically, reduce road surface strength's problem.

Description

Asphalt pavement structure with large-particle-size asphalt mixture

Technical Field

The utility model belongs to the technical field of highway engineering, concretely relates to possess large granule diameter bituminous mixture's bituminous paving structure.

Background

Asphalt pavement refers to various types of pavement that are made by incorporating into mineral materials a road asphalt material. The asphalt binder improves the capability of the paving aggregate to resist damage of traveling vehicles and natural factors to the pavement, and enables the pavement to be smooth, less in dust, impermeable and durable. Accordingly, asphalt pavement is one of the most widely used high-grade pavements in road construction.

Meanwhile, the general asphalt pavement structure is basically as follows: from up subbase, the basic unit, the top layer down, see from the reason that the bituminous paving of current use damaged, not only travel overweight with the vehicle, the traffic flow is relevant for reasons such as big, still have the relation with the intensity on the top layer of wheel contact, pitch is as flexible road surface simultaneously, press outdated when overweight vehicle, very lead to pitch to flow easily, and then make certain department on road surface fill not really, the intensity has been reduced, and then lead to fragile, design a durable bituminous paving very important in order to avoid the appearance of above-mentioned problem.

Disclosure of Invention

The utility model aims at overcoming the defects in the prior art and providing a bituminous pavement structure with large-particle-size bituminous mixture.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an asphalt pavement structure that possesses big particle size bituminous mixture, includes from last top to bottom top layer, basic unit, subbase, the top layer is by the border area of road surface edge with water the big particle size bituminous mixture layer between two border areas, and lay in big particle size bituminous mixture layer below and be located the restriction layer of basic unit top and constitute, the restriction layer comprises the emulsified asphalt layer of laying on the basic unit and the stone layer of laying on the emulsified asphalt layer, the stone in the stone layer inlays the upper surface at the emulsified asphalt layer and acts on big particle size bituminous mixture layer bottom surface.

Further, the thickness of the emulsified asphalt layer is 4-6cm, and the thickness of the stone layer is 3-5cm.

Furthermore, the edge belt and the emulsified asphalt layer are fixedly poured, the edge belt is made of concrete in a pouring mode, the thickness of the edge belt is 10-14cm, and the thickness of the large-particle-size asphalt mixture layer is 7-9cm.

Further, the base course is composed of cement-stabilized macadam and has a thickness of 28cm.

Further, the subbase layer is composed of lime soil and has a thickness of 30cm. Compared with the prior art, the utility model beneficial effect shows:

the utility model discloses a lay big particle diameter bituminous mixture on the top layer, and big particle diameter bituminous mixture has great plasticity, shear deformation and better anti rutting ability, can bear heavier vehicle, and then avoid the road surface to damage too fast, it can avoid big particle diameter bituminous mixture to remove to the outside edge to be provided with the border area simultaneously, and lead to the road surface to sink, and set up the stone layer and avoid the flow of big particle diameter bituminous mixture and lead to certain department on road surface to fill unrealistically, reduce road surface strength's problem.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of an asphalt pavement with a large-particle-size asphalt mixture according to the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the asphalt pavement with large-particle-size asphalt mixture of the present invention;

in the figure: 1. a surface layer; 11. an edge band; 12. a large-particle-size asphalt mixture layer; 13. a confinement layer; 131. emulsifying an asphalt layer; 132. a stone layer; 2. a base layer; 3. an underlayer.

Detailed Description

For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further specifically described with reference to fig. 1-2.

As shown in fig. 1 and 2, an asphalt pavement structure having a large-particle-size asphalt mixture includes a top surface layer 1, a base layer 2, and a bottom base layer 3, the top surface layer 1 includes edge strips 11 at the edge of a pavement, a large-particle-size asphalt mixture layer 12 poured between the two edge strips 11, and a restriction layer 13 laid below the large-particle-size asphalt mixture layer 12 and above the base layer 2, the restriction layer 13 includes an emulsified asphalt layer 131 laid on the base layer 2 and a stone layer 132 laid on the emulsified asphalt layer 131, and stones in the stone layer 132 are embedded in the upper surface of the emulsified asphalt layer 131 and act on the bottom surface of the large-particle-size asphalt mixture layer 12, in some embodiments: through laying big particle diameter bituminous mixture at top layer 1, and big particle diameter bituminous mixture has great plasticity, shear deformation and better anti rutting ability, can bear heavier vehicle, and then avoid the road surface to damage too fast, be provided with simultaneously along the border area 11 and can avoid the outside marginal facies of big particle diameter bituminous mixture to remove, and lead to the road surface to cave in, and set up stone layer 132 and avoid the flow of big particle diameter bituminous mixture and lead to certain department on road surface to fill not really, reduce the problem of road surface intensity, it is concrete: because the asphalt material is flexible, the asphalt material can move when the vehicle passes by, and the arrangement of the two edge belts 11 can completely prevent the asphalt mixture layer 12 with large particle size from moving towards the edge of the road, and meanwhile, the surfaces of the stones in the stone layers 132 can prevent the asphalt mixture layer 12 with large particle size from moving, so that the problem of road surface collapse is avoided.

As shown in figure 1, the thickness of the emulsified asphalt layer 131 is 4-6cm, the thickness of the stone layer 132 is 3-5cm, the edge belt 11 and the emulsified asphalt layer 131 are fixedly poured, the edge belt 11 is made of concrete and is 10-14cm, the thickness of the large-particle-size asphalt mixture layer 12 is 7-9cm, the base layer 2 is made of cement-stabilized macadam and is 28cm, and the base layer 3 is made of lime soil and is 30cm.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

Claims

1. The asphalt pavement structure with the large-particle-size asphalt mixture is characterized by comprising a surface layer (1), a base layer (2) and a subbase layer (3) from top to bottom, wherein the surface layer (1) consists of edge belts (11) at the edge of a pavement, a large-particle-size asphalt mixture layer (12) poured between the two edge belts (11), and a limiting layer (13) laid below the large-particle-size asphalt mixture layer (12) and above the base layer (2), the limiting layer (13) consists of an emulsified asphalt layer (131) laid on the base layer (2) and a stone layer (132) laid on the emulsified asphalt layer (131), and stones in the stone layer (132) are embedded on the upper surface of the emulsified asphalt layer (131) and act on the bottom surface of the large-particle-size asphalt mixture layer (12).

2. The asphalt pavement structure with large-particle-size asphalt mixture according to claim 1, wherein the thickness of the emulsified asphalt layer (131) is 4-6cm, and the thickness of the stone layer (132) is 3-5cm.

3. The asphalt pavement structure with the large-particle-size asphalt mixture according to claim 1, characterized in that the edge strip (11) is fixedly poured with the emulsified asphalt layer (131), the edge strip (11) is made of concrete and is 10-14cm thick, and the large-particle-size asphalt mixture layer (12) is 7-9cm thick.

4. The asphalt pavement structure with large-particle-size asphalt mixture according to claim 1, wherein the base course (2) is composed of cement-stabilized macadam and has a thickness of 28cm.

5. The asphalt pavement structure with large-grain asphalt mixture according to claim 1, wherein the subbase layer (3) is made of lime soil and has a thickness of 30cm.