Drainage type asphalt pavement structure

Abstract

The utility model relates to a drainage type asphalt pavement structure, and relates to the field of asphalt pavements. The drainage structure comprises a foundation, an asphalt roadbed and a drainage component, the asphalt roadbed comprises a cushion layer, a bearing base layer, a protective surface layer, a wearing layer and a connecting layer, and the drainage component comprises a drainage ditch, a drainage grid and a connecting assembly. According to the drainage type asphalt pavement structure, the foundation provides supporting force for the asphalt roadbed, the bearing base layer and the protective surface layer form a main compression-resistant layer of the asphalt roadbed, and the wearing layer serves as a main contact surface of the asphalt roadbed, so that the overall strength of an asphalt pavement is effectively guaranteed; the water drainage component can effectively drain water accumulated on the asphalt pavement to the two sides of a road, traffic accidents caused by slippery pavement are avoided, the safety performance is high, and therefore the service life of the asphalt pavement is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of asphalt pavement, and in particular to a drainage type asphalt pavement structure. Background Art

[0002] The related technology discloses a crack-resistant and draining asphalt pavement with announcement number CN206245171U, comprising a glass fiber asphalt mixed layer, the glass fiber asphalt mixed layer is laid on the upper layer of the pavement foundation stone layer, the upper layer of the glass fiber asphalt mixed layer is laid with an anti-cracking drainage layer, the anti-cracking drainage layer comprises an anti-cracking concrete layer and a permeable layer on the left and right sides of the anti-cracking concrete layer, a pre-cut slit is opened in the middle of the anti-cracking concrete layer, a multi-layer steel grid is embedded in the anti-cracking concrete layer, a longitudinal porous pipe is installed in the permeable layer, a plurality of transverse drainage pipes are connected to the outer wall of the longitudinal porous pipe, and a porous asphalt surface layer is laid on the upper layer of the anti-cracking drainage layer. Compared with the existing asphalt pavement, the crack-resistant and draining asphalt pavement has stronger crack resistance and long service life, and can effectively drain the moisture accumulated on the pavement to both sides of the road, avoiding traffic accidents caused by slippery pavement, and has high safety performance.

[0003] For the drainage type asphalt pavement in the above technology, a porous asphalt surface layer is laid on the upper end face of the anti-cracking drainage layer. The porous asphalt surface layer structure has a large porosity and permeability after compaction. During use, gas and moisture can easily enter the asphalt mixture, causing asphalt aging or peeling of asphalt from the aggregate surface. Utility Model Content

[0004] In order to solve the problem that the current drainage type asphalt pavement is paved with a porous asphalt surface layer on the upper end face of the anti-cracking drainage layer, the porous asphalt surface layer structure has a large porosity and permeability after compaction. During use, gas and moisture can easily enter the asphalt mixture, causing asphalt aging or peeling of asphalt from the aggregate surface. The present application provides a drainage type asphalt pavement structure.

[0005] The drainage type asphalt pavement structure provided in the present application adopts the following technical scheme: it includes a foundation, an asphalt roadbed arranged on the upper end surface of the foundation, and drainage components arranged on both sides of the asphalt roadbed, the asphalt roadbed includes a cushion layer arranged on the upper end surface of the foundation, a receiving base layer arranged on the upper end surface of the cushion layer, a protective surface layer arranged on the upper end surface of the receiving base layer, a wear layer arranged on the upper end surface of the protective surface layer, and a connecting layer arranged between the receiving base layer and the protective surface layer, the drainage component includes a drainage ditch arranged with the same length as the asphalt roadbed, a sewage grille arranged in the drainage ditch, and a connecting component arranged between the sewage grille and the drainage ditch.

[0006] By adopting the above technical scheme, the foundation provides support for the asphalt roadbed, and the base layer and the protective surface layer constitute the main compression-resistant layer of the asphalt roadbed, and the wear layer is used as the main contact surface of the asphalt roadbed, thereby effectively ensuring the overall strength of the asphalt pavement, preventing the increase of the void ratio due to the settlement of the asphalt roadbed after compaction, and further improving the anti-cracking ability of the asphalt pavement. The drainage components can effectively drain the moisture accumulated in the asphalt pavement to both sides of the road, avoiding traffic accidents caused by slippery road surface, and having high safety performance, thereby effectively ensuring the service life of the asphalt pavement.

[0007] Optionally, the receiving base layer is sequentially arranged as a bottom base layer and an upper base layer in a direction away from the cushion layer, and the bottom base layer is arranged to be a granular material stabilized by an inorganic binder.

[0008] By adopting the above technical solution, the inorganic binder stabilized granular material has the characteristics of high strength and strong integrity.

[0009] Optionally, the upper base layer is made of one or more of mud-bound gravel, mud-lime-bound gravel or gap-filled gravel.

[0010] By adopting the above technical solution, such material makes it easy for the connecting layer to penetrate into the upper base layer, increasing the adhesion between the upper base aggregates, thereby effectively avoiding the increase in void ratio caused by settlement after compaction of the asphalt roadbed, and making it easy for the connecting layer to connect the receiving base layer with the protective surface layer.

[0011] Optionally, the protective surface layer is arranged as a lower layer and an upper layer in sequence in the direction away from the receiving base layer, and the thickness of the upper layer is 5mm-10mm higher than that of the lower layer. The upper layer and the lower layer are respectively arranged as one or both of PAC-13 drainage asphalt or PAC-20 drainage asphalt.

[0012] By adopting the above technical solution, the upper and lower layers are set to drainage asphalt material to facilitate water permeability of the asphalt roadbed, effectively alleviate road surface water accumulation and ensure road safety.

[0013] Optionally, the connecting assembly includes a mounting hole arranged on the asphalt roadbed and adapted to the sewage grille, a positioning block arranged on one side of the upper end of the sewage grille, and a positioning groove arranged on the mounting hole and adapted to the positioning block, the inner wall of the mounting hole is tangentially connected to the outer side of the sewage grille, and the positioning block and the positioning groove are overlapped.

[0014] By adopting the above technical scheme, the complementary effect between the positioning block and the positioning groove makes it easy to install the sewage grille in the inner cavity of the drainage ditch, and to remove the sewage grille from the drainage ditch, so as to facilitate the inspection and maintenance of the drainage grille and the cleaning of the inner cavity of the drainage ditch, thereby further ensuring the drainage force of the drainage component.

[0015] Optionally, the inner cavity of the sewage grille is configured as a drainage cavity, and the inner diameter of the drainage cavity decreases from top to bottom in its height direction.

[0016] By adopting the above technical solution, the contact surface between the water entering the sewage grille and the drainage cavity is an inclined surface, so that the water can fall automatically due to its own weight.

[0017] Optionally, the upper end surface of the drainage grille is evenly provided with first drainage holes, the lower end surface of the drainage grille is provided with second drainage holes, and the aperture of the first drainage hole is larger than the aperture of the second drainage hole.

[0018] By adopting the above technical solution, the drainage force of the sewage grille is effectively guaranteed, and it is convenient to filter the sewage entering the drainage ditch multiple times, effectively avoiding the precipitation of impurities in the drainage ditch.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] 1. The foundation provides support for the asphalt roadbed, and the base layer and protective surface layer constitute the main compressive layer of the asphalt roadbed. The wear layer serves as the main contact surface of the asphalt roadbed, thereby effectively ensuring the overall strength of the asphalt pavement, preventing the increase of the void ratio due to the settlement of the asphalt roadbed after compaction, and further improving the anti-cracking ability of the asphalt pavement;

[0021] 2. The drainage components can effectively drain the water accumulated on the asphalt pavement to both sides of the road, avoiding traffic accidents caused by slippery road surface, with high safety performance, thus effectively ensuring the service life of the asphalt pavement;

[0022] 3. The drainage grille in the drainage component is convenient for filtering the water accumulated on the road surface, thereby effectively preventing impurities in the water from entering the drainage ditch. The drainage grille is set as a detachable structure, which is convenient for inspection and maintenance of the drainage grille and cleaning of the inner cavity of the drainage ditch, further ensuring the drainage force of the drainage component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the overall structure of the drainage type asphalt pavement structure of the present application;

[0024] Figure 2 It is a structural schematic diagram of the drainage component and the asphalt roadbed explosion diagram in the drainage type asphalt pavement structure of the present application;

[0025] Figure 3 It is a structural schematic diagram of the asphalt roadbed structure in the drainage type asphalt pavement structure of the present application;

[0026] Figure 4It is a structural schematic diagram of a drainage component in the drainage type asphalt pavement structure of the present application;

[0027] Figure 5 It is a partial half-section view of the drainage grille in the drainage type asphalt pavement structure of the present application.

[0028] Explanation of the reference numerals: 11, foundation; 12, cushion layer; 131, subbase layer; 132, upper base layer; 14, connecting layer; 151, lower layer; 152, upper layer; 16, wearing layer; 161, mounting hole; 2, drainage ditch; 3, sewage grille; 30, drainage chamber; 31, positioning block; 321, first drainage hole; 322, second drainage hole. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] Please refer to Figure 1 and Figure 2 The embodiment of the present application discloses a drainage type asphalt pavement structure, including a foundation 11, an asphalt roadbed arranged on the upper end surface of the foundation 11, and drainage components arranged on both sides of the asphalt roadbed. The asphalt roadbed includes a cushion layer 12 arranged on the upper end surface of the foundation 11, and a receiving base layer arranged on the upper end surface of the cushion layer 12. The receiving base layers are sequentially arranged as a subbase layer 131 and an upper base layer 132 in a direction away from the cushion layer 12, and the subbase layer 131 is arranged as an inorganic binder stabilized granular material, which has the characteristics of high strength and strong integrity. The upper base layer 132 adopts one or more of mud-bonded crushed stone, mud-lime-bonded crushed stone or gap-filled crushed stone. Such a material facilitates the penetration of the connecting layer 14 into the upper base layer 132, increases the adhesion between the aggregates of the upper base layer 132, thereby effectively avoiding the increase of the void ratio caused by the settlement of the asphalt roadbed after compaction, and facilitates the connecting layer 14 to connect the receiving base layer with the protective surface layer.

[0031] Please refer to Figure 3 A protective surface layer is provided on the upper end surface of the receiving base layer. The protective surface layer is sequentially arranged as a lower layer 151 and an upper layer 152 in a direction away from the receiving base layer, and the thickness of the upper layer 152 is 5mm-10mm higher than that of the lower layer 151. The upper layer 152 and the lower layer 151 are convenient for protecting the lower layer 151. The upper layer 152 and the lower layer 151 are respectively arranged as PAC-13 drainage asphalt material, and the lower layer 151 is arranged as one or two of PAC-13 drainage asphalt material or PAC-20 drainage asphalt. The upper layer 152 and the lower layer 151 are arranged as drainage asphalt material to facilitate the permeability of the asphalt roadbed, effectively alleviate the accumulation of water on the road surface, and ensure the safety of the road surface.

[0032] Please refer to Figure 3A wear layer 16 is arranged on the upper end surface of the protective surface layer. The wear layer 16 is arranged to be a glass fiber asphalt mixed layer material. The wear layer 16 is convenient for protecting the protective surface layer and effectively prolongs the service life of the asphalt roadbed.

[0033] Please refer to Figure 3 A bonding layer 14 is arranged between the receiving base layer and the protective surface layer. The bonding layer 14 is set as modified asphalt bonding oil. The bonding layer 14 made of oily material is convenient for connecting the receiving base layer with the protective surface layer, and is convenient for isolating the water vapor of the protective surface layer, thereby effectively ensuring the rigidity of the receiving base layer.

[0034] Please refer to Figure 2 and Figure 4 The drainage component includes a drainage ditch 2 set with the same length as the asphalt roadbed, a sewage grille 3 set in the drainage ditch 2, and a connecting component set between the sewage grille 3 and the drainage ditch 2. The connecting component includes a mounting hole 161 set on the asphalt roadbed and adapted to the sewage grille 3, a positioning block 31 set on one side of the upper end of the sewage grille 3, and a positioning groove set on the mounting hole 161 and adapted to the positioning block 31. The inner wall of the mounting hole 161 is tangentially connected to the outer side of the sewage grille 3, and the positioning block 31 overlaps the positioning groove. The complementary effect between the positioning block 31 and the positioning groove makes it easy to install the sewage grille 3 in the inner cavity of the drainage ditch 2, and to remove the sewage grille 3 from the drainage ditch 2, so as to facilitate the inspection and maintenance of the drainage grille and the cleaning of the inner cavity of the drainage ditch 2, thereby further ensuring the drainage force of the drainage component.

[0035] Please refer to Figure 5 In order to ensure the drainage capacity of the drainage component, the inner cavity of the drainage grille 3 is set as a drainage cavity 30, and the inner diameter of the drainage cavity 30 decreases from top to bottom in its height direction, so that the contact surface between the water entering the drainage grille 3 and the drainage cavity 30 is an inclined surface, so that the water automatically falls due to its own weight. The upper end surface of the drainage grille 3 is evenly provided with first drainage holes 321, and the lower end surface of the drainage grille 3 is provided with second drainage holes 322. The aperture of the first drainage hole 321 is larger than the aperture of the second drainage hole 322, which effectively ensures the drainage force of the drainage grille 3, and facilitates multiple filtration of the sewage entering the drainage ditch 2, effectively avoiding the precipitation of impurities in the drainage ditch 2.

[0036] The implementation principle of the drainage type asphalt pavement structure of the embodiment of the present application is: when in use, the water first enters the drainage chamber 30 through the first drainage hole 321, and the contact surface between the water entering the drainage grille 3 and the drainage chamber 30 is an inclined surface, so that the water can automatically fall due to its own weight, and is filtered for the second time through the second drainage hole 322, and then discharged through the drainage ditch 2.

[0037] When the drain ditch 2 needs to be cleaned, the positioning block 31 on the drain grille 3 is disengaged from the mounting hole 161 and the drain grille 3 is removed, thereby facilitating cleaning of the inner cavity of the drain ditch 2 and washing the drain grille 3 .

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Drainage type asphalt pavement structure, characterized by: It comprises a foundation (11), an asphalt roadbed arranged on the upper end surface of the foundation (11), and drainage components arranged on both sides of the asphalt roadbed; The asphalt roadbed comprises a cushion layer (12) arranged on the upper end surface of the foundation (11), a receiving base layer arranged on the upper end surface of the cushion layer (12), a protective surface layer arranged on the upper end surface of the receiving base layer, a wear layer (16) arranged on the upper end surface of the protective surface layer, and a connecting layer (14) arranged between the receiving base layer and the protective surface layer; The drainage component comprises a drainage ditch (2) arranged with the same length as the asphalt roadbed, a drainage grille (3) arranged in the drainage ditch (2), and a connection component arranged between the drainage grille (3) and the drainage ditch (2).

2. The drainage type asphalt pavement structure according to claim 1, characterized in that: The receiving base layer is sequentially arranged as a bottom base layer (131) and an upper base layer (132) in a direction away from the cushion layer (12), and the bottom base layer (131) is arranged to be a material of inorganic binder-stabilized granular material.

3. The drainage type asphalt pavement structure according to claim 2, characterized in that: The protective surface layer is sequentially arranged as a lower layer (151) and an upper layer (152) in a direction away from the receiving base layer, and the thickness of the upper layer (152) is 5mm-10mm higher than that of the lower layer (151).

4. The drainage type asphalt pavement structure according to claim 3, characterized in that: The connection assembly comprises a mounting hole (161) arranged on the asphalt roadbed and adapted to the drainage grille (3), a positioning block (31) arranged on one side of the upper end of the drainage grille (3), and a positioning groove arranged on the mounting hole (161) and adapted to the positioning block (31).

5. The drainage type asphalt pavement structure according to claim 4, characterized in that: The inner wall of the mounting hole (161) is tangentially connected to the outer side of the sewage grille (3), and the positioning block (31) and the positioning groove are overlapped.

6. The drainage type asphalt pavement structure according to claim 5, characterized in that: The inner cavity of the drainage grille (3) is configured as a drainage cavity (30), and the inner diameter of the drainage cavity (30) decreases in sequence from top to bottom in its height direction.

7. The drainage type asphalt pavement structure according to claim 6, characterized in that: The upper end surface of the drainage grille (3) is evenly provided with first drainage holes (321), and the lower end surface of the drainage grille (3) is provided with second drainage holes (322), and the aperture of the first drainage hole (321) is larger than the aperture of the second drainage hole (322).

Images