CN219117856U

CN219117856U - Asphalt paving structure with high water permeability

Info

Publication number: CN219117856U
Application number: CN202222614987.9U
Authority: CN
Inventors: 林泽锋
Original assignee: Guangdong Zhongyu Hydropower Construction Engineering Co ltd
Current assignee: Guangdong Zhongyu Hydropower Construction Engineering Co ltd
Priority date: 2022-10-01
Filing date: 2022-10-01
Publication date: 2023-06-02
Anticipated expiration: 2032-10-01

Abstract

The utility model discloses a high-water-permeability asphalt paving structure, which relates to the technical field of road engineering and comprises a foundation and foundation components, wherein both sides of the foundation are respectively provided with an inwards-sunken drainage tank, the openings of the drainage tanks are covered with a filter screen, the surface of the foundation is provided with a roadbed bottom plate, both ends of the roadbed bottom plate are respectively provided with a protection plate, the foundation components for roadbed foundation protection are arranged above the roadbed bottom plate, the foundation components comprise a sealing layer, a geomembrane, coarse-grained soil and a heat insulation plate from top to bottom, and the sealing layer is positioned at the uppermost layer deviating from the roadbed bottom plate. The application provides a pitch of high water permeability lays structure, through the water permeable membrane with water from preventing the wash port discharge on the bank protection, prevent the road bed disease influence that road bed water brought, protected the stability of road bed, the road surface ponding is through the straight water drainage tank of foundation both sides of slope protection slope, has increased the discharge velocity of road surface ponding for the road bed of present case possesses high water permeability.

Description

Asphalt paving structure with high water permeability

Technical Field

The utility model relates to the technical field of road engineering, in particular to a high-water-permeability asphalt paving structure.

Background

The concept of roadbeds, which are common in road engineering, refers to structures that directly support a road formed by filling or excavation. The roadbed has two basic forms according to the different terrain conditions: the road embankment and cutting are commonly called filling and digging, and asphalt covered on the surface of the roadbed is a waterproof and anticorrosive material widely applied.

The road structure formed by the roadbed and the expressway together is a relatively loosely-connected structure form, has weak capability of resisting dynamic load, and has poor capability of resisting when being frequently affected and destroyed by natural condition changes such as geology, water, rainfall, climate, earthquake and the like.

Accordingly, in view of the above, an asphalt laying structure with high water permeability has been proposed to achieve a more practical value by improving the conventional structure and the defects.

Disclosure of Invention

The utility model aims to provide an asphalt paving structure with high water permeability so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: including ground and foundation assembly, the water drainage tank of inwards sinking has all been seted up to the ground both sides, and water drainage tank opening part covers there is the filter screen, the ground surface is provided with the road bed bottom plate, and road bed bottom plate both ends all are equipped with the protection shield for the protection of road bed basis foundation the foundation assembly sets up in road bed bottom plate top, foundation assembly top-down includes sealing layer, geomembrane, coarse-grained soil and thermal insulation board, the sealing layer is located the upper strata that deviates from the road bed bottom plate, and sealing layer lower floor adheres to there is the geomembrane, the geomembrane lower floor adheres to there is coarse-grained soil, and the coarse-grained soil lower floor adheres to the thermal insulation board that laminates mutually with the road bed bottom plate.

Further, the foundation assembly further comprises a water permeable membrane, the water permeable membranes are attached to two sides of the heat insulation plate in an inclined mode, and extension lines of two sides of the water permeable membranes are crossed to the central axis of the top of the roadbed bottom plate.

Further, the space between the transverse expansion joints of the sealing layer is not more than 10m, and the geomembrane with the size smaller than 0.8mm is attached below the sealing layer.

Furthermore, the permeable membrane is inclined to be provided with the protection slope on one side deviating from the heat insulation plate, and the inside top-down of protection slope distributes there is the wash port.

Furthermore, the tail end of the top of the protection slope is provided with a road shoulder, and the middle part of the opposite surface of the road shoulder is integrally provided with an asphalt pavement main body for protecting the surface of the roadbed.

Furthermore, the asphalt pavement main body comprises a waterproof anti-cracking layer and a mixed aggregate layer, wherein the mixed aggregate layer is arranged below the waterproof anti-cracking layer, and the mixed aggregate layer is formed by mixing small-particle-size ceramsite and large-particle-size broken stone.

Further, the asphalt pavement main body further comprises support columns and a concrete cement layer, wherein the support columns are arranged in the inner cavities of the mixed aggregate layers, and the concrete cement layer is arranged below the mixed aggregate layers.

Compared with the prior art, the utility model has the beneficial effects that: the application provides a pitch of high water permeability lays structure, through the water permeable membrane with water from preventing the wash port discharge on the bank protection, prevent the road bed disease influence that road bed water brought, protected the stability of road bed, the road surface ponding is through the straight water drainage tank of foundation both sides of slope protection slope, has increased the discharge velocity of road surface ponding for the road bed of present case possesses high water permeability.

1. According to the utility model, through the arrangement of the drainage grooves, water is discharged from the drainage holes on the protection slope through the water permeable film, so that the influence of roadbed diseases caused by roadbed water is prevented, the stability of the roadbed is protected, accumulated water on the road surface directly flows to the drainage grooves on two sides of the foundation through the inclined protection slope, the drainage speed of the accumulated water on the road surface is increased, and the filter screen covered at the opening of the drainage grooves prevents the blockage of the pipeline of the drainage grooves by external foreign matters;

2. according to the utility model, through the arrangement of the foundation assembly, the design that the space between the transverse expansion joints of the sealing layer is not more than 10m avoids the occurrence of false joints at high temperature in summer, and the geomembrane which is attached below and adopts ECB material is low-temperature resistant and frost-resistant, so that the roadbed in the scheme can resist attack and damage caused by severe change of natural environment;

3. according to the utility model, through the arrangement of the asphalt pavement main body, the waterproof anti-corrosion capability of the roadbed is optimized by the waterproof anti-cracking layer covered on the surface of the asphalt pavement main body, and the pavement supporting effect is optimized by the mixed bone material layer.

Drawings

FIG. 1 is a schematic diagram of the overall front view of the present utility model;

FIG. 2 is a schematic diagram of the basic component structure of the present utility model;

FIG. 3 is a schematic view of the internal structure of the main body of the asphalt pavement of the present utility model.

In the figure: 1. a foundation; 2. a drainage channel; 3. a filter screen; 4. a roadbed base plate; 5. a protective plate; 6. a base component; 601. a sealing layer; 602. geomembrane; 603. coarse-grained soil; 604. a thermal insulation plate; 605. a water permeable membrane; 7. protection slope; 8. a drain hole; 9. road shoulders; 10. an asphalt pavement main body; 1001. a waterproof crack-resistant layer; 1002. mixing the bone material layers; 1003. a support column; 1004. and (3) a concrete cement layer.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1-2, the device comprises a foundation 1 and a foundation assembly 6, wherein both sides of the foundation 1 are respectively provided with an inwards concave drainage tank 2, the opening of the drainage tank 2 is covered with a filter screen 3, the surface of the foundation 1 is provided with a roadbed bottom plate 4, both ends of the roadbed bottom plate 4 are respectively provided with a protection plate 5, the foundation assembly 6 for roadbed foundation protection is arranged above the roadbed bottom plate 4, the foundation assembly 6 comprises a sealing layer 601, a geomembrane 602, coarse-grained soil 603 and a heat insulation plate 604 from top to bottom, the sealing layer 601 is positioned at the uppermost layer which is far away from the roadbed bottom plate 4, the geomembrane 602 is attached to the lower layer of the sealing layer 601, the distance between transverse expansion joints of the sealing layer 601 is not more than 10m, the geomembrane 602 which is less than 0.8mm is attached to the lower part of the sealing layer 601, the design that the gap between transverse expansion joints of the sealing layer 601 is not more than 10m avoids the occurrence of high temperature false joints in summer, the geomembrane 602 which is made of ECB material is resistant to low temperature and frost resistant, the heat insulation plate 604 plays a role in heat insulation and heat preservation at the same time, coarse-grained soil 603 is adhered to the lower layer of the geomembrane 602, the heat insulation plate 604 attached to the roadbed bottom plate 4 is adhered to the lower layer of the coarse-grained soil 603, the foundation assembly 6 further comprises a water permeable membrane 605, the water permeable membrane 605 is obliquely attached to the two sides of the heat insulation plate 604, extension lines of the two sides of the water permeable membrane 605 are crossed with the central axis of the top of the roadbed bottom plate 4, an anti-slope protection 7 is obliquely arranged on one side of the water permeable membrane 605 away from the heat insulation plate 604, drain holes 8 are distributed in the anti-slope 7 from top to bottom, water is discharged from the drain holes 8 on the anti-slope protection 7 through the water permeable membrane 605, water seeping out of the asphalt pavement body 10 is prevented from corroding the foundation assembly 6, and accumulated water on the pavement directly flows to the drain grooves 2 on the two sides of the foundation 1 through the inclined anti-slope protection 7 during natural rainfall, so that the drainage speed of accumulated water on the pavement is increased;

as shown in fig. 3, the end of the top of the protection slope 7 is provided with a road shoulder 9, the middle part of the opposite surface of the road shoulder 9 is integrally provided with an asphalt pavement main body 10 for protecting the surface of a roadbed, the asphalt pavement main body 10 comprises a waterproof anti-cracking layer 1001 and a mixed bone material layer 1002, the lower part of the waterproof anti-cracking layer 1001 is provided with the mixed bone material layer 1002, the mixed bone material layer 1002 is formed by mixing small-particle-size ceramsite and large-particle-size broken stone, the asphalt pavement main body 10 further comprises supporting columns 1003 and a concrete cement layer 1004, the supporting columns 1003 are arranged in the inner cavities of the mixed bone material layer 1002, the concrete cement layer 1004 is arranged below the mixed bone material layer 1002, and the waterproof anti-cracking layer 1001 covered on the surface of the asphalt pavement main body 10 optimizes the waterproof anti-corrosion capability of the roadbed.

Working principle: when the high-permeability asphalt paving structure is used, water is discharged from the water discharge holes 8 on the protection slope 7 through the water permeable membrane 605, the water oozing out of the asphalt pavement main body 10 is prevented from corroding the foundation assembly 6, the pavement ponding is directly led to the water discharge grooves 2 on two sides of the foundation 1 through the inclined protection slope 7 during natural rainfall, the discharge speed of the pavement ponding is increased, the filter screen 3 covered at the opening of the water discharge groove 2 prevents the blockage of external foreign matters on the pipelines of the water discharge groove 2, the waterproof anti-corrosion capability of the roadbed is optimized through the waterproof anti-cracking layer 1001 covered on the surface of the asphalt pavement main body 10, the pavement supporting effect is optimized through the mixed bone material layer 1002 and the supporting columns 1003 filled in the asphalt pavement main body, the foundation assembly 6 is an important assembly for resisting attack and damage caused by severe change of natural environment, the design that the space between transverse expansion joints of the sealing layer 601 is not more than 10m avoids the appearance of false joints at high temperature in summer, the geomembrane 602 attached below adopts ECB materials is resistant to low temperature and frost resistance, and the heat insulation board 604 plays a role of heat insulation.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a pitch laying structure of high water permeability, its characterized in that, including ground (1) and foundation subassembly (6), inwards sunken water drainage tank (2) have all been seted up to ground (1) both sides, and water drainage tank (2) opening part cover has filter screen (3), ground (1) surface is provided with roadbed bottom plate (4), and roadbed bottom plate (4) both ends all are equipped with protection shield (5), be used for roadbed foundation protection foundation subassembly (6) set up in roadbed bottom plate (4) top, foundation subassembly (6) top-down includes sealing layer (601), geomembrane (602), coarse-grained soil (603) and heat insulating plate (604), sealing layer (601) are located the upper strata that deviates from roadbed bottom plate (4), and sealing layer (601) lower floor is attached with geomembrane (602), geomembrane (602) lower floor is attached with coarse-grained soil (603), and coarse-grained soil (603) lower floor is attached with heat insulating plate (604) that laminates mutually with roadbed bottom plate (4).

2. The high-water-permeability asphalt paving structure according to claim 1, wherein the foundation assembly (6) further comprises a water permeable membrane (605), the water permeable membrane (605) is attached to two sides of the heat insulation plate (604) in an inclined manner, and extension lines of two sides of the water permeable membrane (605) are crossed with the central axis of the top of the roadbed bottom plate (4).

3. A high water permeability asphalt paving according to claim 1, wherein the closing layer (601) has a lateral expansion joint spacing of no more than 10m and a geomembrane (602) of less than 0.8mm is attached under the closing layer (601).

4. The asphalt pavement structure with high water permeability according to claim 2, wherein the water permeable membrane (605) is obliquely provided with a protection slope (7) on one side away from the heat insulation plate (604), and drain holes (8) are distributed in the protection slope (7) from top to bottom.

5. The high-water-permeability asphalt paving structure according to claim 4, wherein a shoulder (9) is arranged at the top end of the protection slope (7), and an asphalt pavement main body (10) for protecting the surface of the roadbed is integrally arranged in the middle of the opposite surface of the shoulder (9).

6. The high-water-permeability asphalt pavement structure according to claim 5, wherein the asphalt pavement main body (10) comprises a waterproof crack-resistant layer (1001) and a mixed bone material layer (1002), the mixed bone material layer (1002) is arranged below the waterproof crack-resistant layer (1001), and the mixed bone material layer (1002) is formed by mixing small-particle-size ceramsite and large-particle-size broken stone.

7. The high water permeability asphalt pavement structure of claim 6, wherein the asphalt pavement body (10) further comprises support columns (1003) and a concrete cement layer (1004), the support columns (1003) are arranged in the inner cavity of the mixed bone cement layer (1002), and the concrete cement layer (1004) is arranged below the mixed bone cement layer (1002).