Asphalt pavement structure

Abstract

The utility model discloses an asphalt pavement structure, which relates to the technical field of asphalt pavements, and comprises a surface layer and a soil base layer, the bottom end of the surface layer is provided with a support layer, the bottom of the support layer is provided with a water diversion hole, the bottom end of the support layer is provided with a base layer, the top end of the base layer is provided with a cushion layer, and the soil base layer is located at the bottom end of the cushion layer. Grooves are formed in the two sides of the surface layer, and curbs are installed on one sides of the drainage grooves. The utility model solves the problems that rainwater which does not flow to a drainage pipeline on the road surface is very easy to splash by a vehicle running at a high speed, and water mist formed at the tail of the vehicle causes danger to the vehicle running behind the vehicle; the rainwater on the surface of the surface layer is drained to the drainage groove through the design that the surface of the surface layer is high in middle and low in side; rainwater which is not drained into the drainage grooves permeates into the honeycomb-shaped supporting layer and converges into the water diversion holes, the water diversion holes guide the rainwater permeating into the surface layer into the drainage grooves, it is avoided that too much rainwater is collected on the road surface, and therefore too much water mist splashed by vehicles running at a high speed is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement, in particular to an asphalt pavement structure. Background Art

[0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed into mineral materials. As one of the most common pavement forms in modern transportation infrastructure, asphalt pavement is widely used in highways, urban roads and various traffic arteries.

[0003] Most of the existing asphalt pavement structures are usually composed of a surface layer and a base layer. The surface layer is the part that comes into direct contact with the vehicle and is generally made of asphalt concrete material, providing a good driving surface for the vehicle. It has the characteristics of anti-skid, wear resistance and noise reduction. At the same time, the surface layer can prevent rainwater from penetrating into the pavement structure and protect the base layer from water damage. In addition, in order to reduce the formation of water accumulation on the surface of the surface layer, the surface of the surface layer is usually set in a high-middle and low-side form, so as to drain the rainwater on the road surface into the drainage pipes on both sides of the road surface. The base layer is located under the surface layer and mainly plays a load-bearing role. Cement-stabilized gravel and fly ash gravel materials are usually used to provide stable support for the surface layer and prevent uneven settlement of the roadbed from damaging the pavement structure.

[0004] Although the existing asphalt pavement structure can prevent rainwater from penetrating into the pavement structure, thereby protecting the internal structure of the pavement from water damage, this method of preventing rainwater from penetrating into the pavement can easily lead to rainwater on the road surface that has not yet flowed into the drainage pipe when a vehicle is driving on the road. It is very easy to be splashed by high-speed vehicles, forming water mist at the rear of the vehicle, thereby posing a certain danger to vehicles driving behind the vehicle. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide an asphalt pavement structure to solve the technical problem that the traditional asphalt pavement structure easily causes high-speed vehicles to splash rainwater that has not flowed into the drainage pipe on the road surface.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an asphalt pavement structure, comprising a surface layer and a soil base layer, a support layer is provided at the bottom end of the surface layer, and a water diversion hole is opened at the bottom of the support layer, a base layer is provided at the bottom end of the support layer, a cushion layer is provided at the top end of the base layer, the soil base layer is located at the bottom end of the cushion layer, drainage grooves are opened on both sides of the surface layer, and a curb is installed on one side of the drainage groove.

[0007] By adopting the above technical solution, the problem that rainwater on the road surface that has not yet flowed into the drainage pipe is easily splashed by high-speed vehicles and the water mist formed at the rear of the vehicle poses a danger to vehicles traveling behind the vehicle is solved. A large amount of rainwater on the surface of the surface layer is drained to the drainage grooves on both sides of the road surface through the high-middle and low-side design of the surface layer. The rainwater on the surface layer that is not drained into the drainage grooves penetrates into the honeycomb-shaped supporting layer and gathers into the water diversion holes. The water diversion holes divert the rainwater that has penetrated into the inside of the surface layer into the drainage grooves, avoiding excessive rainwater from gathering on the road surface, thereby reducing excessive water mist splashed by high-speed vehicles.

[0008] The present invention is further configured such that the interior of the support layer is configured to be honeycomb-shaped, and the support layer is configured to be high in the middle and low on both sides.

[0009] By adopting the above technical solution, the honeycomb-shaped support layer can provide certain support to the road surface. At the same time, the rainwater that penetrates into the support layer is drained to the water diversion holes through the honeycomb gaps, thereby diverting the rainwater that penetrates into the surface layer to the drainage grooves on both sides of the road surface.

[0010] The utility model is further configured such that a filter is movably installed on the top of the drainage trough, and a cover plate is provided on the top of the filter.

[0011] By adopting the above technical solution, the tops of the drainage gutters on both sides of the road are parallel to the sides of the road. At the same time, the cover installed above the drainage gutters filters and separates plastic waste floating in the rainwater to prevent the plastic waste from clogging the drainage gutters. In addition, a filter net is provided at the bottom end of the cover plate to filter leaves and cigarette butts mixed in the rainwater, making it convenient for cleaning staff to clean the drainage gutters.

[0012] The utility model is further configured such that an antifreeze layer and a waterproof layer are provided inside the cushion layer, and a waterproof membrane is laid on the bottom of the waterproof layer.

[0013] By adopting the above technical solution, the interior of the cushion layer is divided into two parts: an antifreeze layer and a waterproof layer. A waterproof membrane is laid at the bottom of the upper waterproof layer. The waterproof membrane blocks rainwater from continuing to penetrate into the soil base, preventing rainwater from penetrating into the soil base and causing reduced road strength, cracks and potholes.

[0014] The utility model is further configured such that drainage holes are provided on both sides of the waterproof membrane, and the drainage holes are connected to the drainage groove and the interior of the waterproof layer.

[0015] By adopting the above technical solution, the waterproof membrane laid at the bottom of the waterproof layer isolates the infiltrated rainwater on the upper surface of the waterproof membrane. The gathered rainwater flows to both sides of the waterproof membrane and finally flows into the drainage trough through the drainage holes, thereby avoiding excessive accumulation of rainwater in the waterproof layer.

[0016] The utility model is further configured such that the paving material of the antifreeze layer is coal slag, which has good thermal insulation performance.

[0017] By adopting the above technical solution, coal slag has good thermal insulation performance, which can effectively prevent heat transfer and reduce soil frost heave of the road soil base. At the same time, coal slag has low cost and wide source, and coal slag with poor combustion effect can be maximized.

[0018] The present invention is further configured such that the surface paving material is high-viscosity modified asphalt, and the modified asphalt used contains more coarse aggregate and less fine aggregate.

[0019] By adopting the above technical solution, high-viscosity modified asphalt has strong adhesion, which can firmly bond aggregates together and appropriately adjust the particle size distribution of coarse and fine aggregates so that after the coarse aggregate forms a stable skeleton structure, a certain amount of fine aggregate is used to fill some of the gaps, forming a structure with both larger gaps and a certain degree of stability. Such a setting can not only ensure that rainwater has a channel to penetrate, but also ensure that the underlying layer will not be excessively deformed or damaged under the action of vehicle loads.

[0020] The utility model is further configured such that the base paving material is asphalt-stabilized crushed stone, and the asphalt-stabilized crushed stone is a base material formed by bonding crushed stones together using asphalt as a binder.

[0021] By adopting the above technical solution, asphalt-stabilized gravel is bonded together by asphalt to form a structural layer with a certain strength. The interlocking of the gravels can effectively transfer and disperse vehicle loads. The asphalt plays a filling and bonding role, making the entire structure a whole. This structure can withstand large traffic loads, whether it is static vehicle weight or dynamic vehicle impact, it can cope with it well, so that the base layer can provide solid support for the road surface.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. The present invention solves the problem that rainwater on the road surface that has not yet flowed into the drainage pipes is easily splashed by high-speed vehicles, and the water mist formed at the rear of the vehicle poses a danger to vehicles traveling behind it. A large amount of rainwater on the surface of the surface layer is drained to the drainage grooves on both sides of the road surface through the high-middle and low-side design of the surface layer. Rainwater on the surface layer that is not drained into the drainage grooves penetrates into the honeycomb-shaped supporting layer and gathers in the water diversion holes. The water diversion holes divert the rainwater that has penetrated into the interior of the surface layer into the drainage grooves, thereby reducing water accumulation on the road surface.

[0024] 2. The utility model solves the problem of rainwater penetrating into the pavement and causing damage to the internal structure of the pavement through a cushion layer, an antifreeze layer, a waterproof layer, drainage holes and a waterproof membrane. The interior of the cushion layer is provided with an antifreeze layer and a waterproof layer, and a waterproof membrane is laid at the bottom end of the waterproof layer. The waterproof membrane guides the rainwater penetrating into the cushion layer into the drainage ditch through the drainage holes, avoiding the problem of continued water penetration causing the soil strength of the soil base to decrease and causing soil expansion and contraction. In addition, the antifreeze layer arranged at the bottom end of the cushion layer has good thermal insulation performance, which reduces the damage caused by the low temperature of the road surface to the soil base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the overall pavement structure diagram of the utility model;

[0026] Figure 2 This is a cross-sectional view of the road surface of the present utility model;

[0027] Figure 3 This is a partially enlarged view A of the road surface of the present invention.

[0028] In the figure: 1. Soil base layer; 2. Cushion layer; 21. Antifreeze layer; 22. Waterproof layer; 23. Waterproof membrane; 3. Base layer; 4. Surface layer; 41. Support layer; 5. Drainage trough; 6. Filter screen; 7. Cover plate; 8. Curbstone; 9. Water inlet hole; 10. Drainage hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] An asphalt pavement structure, such as Figure 1 - Figure 3As shown, it includes a surface layer 4 and a soil base layer 1. A supporting layer 41 is provided at the bottom end of the surface layer 4, and a water diversion hole 9 is opened at the bottom of the supporting layer 41. A base layer 3 is provided at the bottom end of the supporting layer 41, and a cushion layer 2 is provided on the top of the base layer 3. The soil base layer 1 is located at the bottom end of the cushion layer 2. Drainage grooves 5 are provided on both sides of the surface layer 4, and a curbstone 8 is installed on one side of the drainage groove 5, which solves the problem that rainwater on the road surface that has not flowed into the drainage pipe is easily splashed by high-speed vehicles, and the water mist formed at the rear of the vehicle poses a danger to vehicles traveling behind the vehicle. A large amount of rainwater on the surface of the surface layer 4 is drained to the drainage grooves 5 on both sides of the road surface through the high-middle and low-side design of the surface of the surface layer 4. The rainwater on the surface of the surface layer 4 that is not drained to the drainage grooves 5 penetrates into the honeycomb-shaped supporting layer 41 and gathers into the water diversion holes 9. The water diversion holes 9 divert the rainwater that penetrates into the inside of the surface layer 4 to the drainage grooves 5, avoiding excessive rainwater collection on the road surface, thereby reducing excessive water mist splashed by high-speed vehicles.

[0032] See also Figure 3 The interior of the support layer 41 is arranged in a honeycomb shape, and the support layer 41 is arranged to be high in the middle and low on both sides. The honeycomb-shaped support layer 41 can provide certain support to the road surface. At the same time, the rainwater that penetrates into the support layer 41 is drained to the water diversion hole 9 through the honeycomb gap, thereby diverting the rainwater that penetrates into the surface layer 4 to the drainage grooves 5 on both sides of the road surface.

[0033] See also Figure 2 A filter screen 6 is movably installed on the top of the drainage trough 5, and a cover plate 7 is provided on the top of the filter screen 6. The tops of the drainage troughs 5 arranged on both sides of the road surface are parallel to the two sides of the road surface. At the same time, the cover plate 7 installed above the drainage trough 5 filters and separates the plastic garbage floating in the rainwater to prevent the plastic garbage from clogging the drainage trough 5. In addition, a filter screen 6 is provided at the bottom end of the cover plate 7. The filter screen 6 filters the leaves and cigarette butts mixed in the rainwater, making it convenient for cleaning personnel to clean the drainage trough 5.

[0034] See also Figure 2 The interior of the cushion layer 2 is provided with an antifreeze layer 21 and a waterproof layer 22, and a waterproof membrane 23 is laid on the bottom of the waterproof layer 22. The interior of the cushion layer 2 is divided into two parts: the antifreeze layer 21 and the waterproof layer 22. The bottom of the waterproof layer 22 located above is laid with a waterproof membrane 23. The waterproof membrane 23 blocks rainwater from continuing to penetrate into the soil base layer 1, preventing rainwater from penetrating into the soil base layer 1, which causes the road surface strength to decrease, and cracks and potholes to appear.

[0035] See also Figure 1Drain holes 10 are provided on both sides of the waterproof membrane 23, and the drainage holes 10 are connected to the drainage groove 5 and the inside of the waterproof layer 22. The waterproof membrane 23 laid on the bottom of the waterproof layer 22 isolates the penetrated rainwater on the upper surface of the waterproof membrane 23. The gathered rainwater flows to both sides of the waterproof membrane 23 and finally flows into the drainage groove 5 through the drainage holes 10, avoiding excessive accumulation of rainwater in the waterproof layer 22.

[0036] See also Figure 2 The paving material of the antifreeze layer 21 is coal slag, which has good thermal insulation performance. Coal slag has good thermal insulation performance, can effectively prevent the transfer of heat, and reduce the frost heave of the soil base of road 1. At the same time, coal slag has low cost and wide source, and can maximize the utilization of coal slag with poor combustion effect.

[0037] See also Figure 1 and Figure 2 The paving material of the surface layer 4 is high-viscosity modified asphalt, and modified asphalt with more coarse aggregate and less fine aggregate is used. The high-viscosity modified asphalt has strong adhesion, which can firmly bond the aggregates together. The particle size distribution of coarse and fine aggregates is properly adjusted so that after the coarse aggregate forms a stable skeleton structure, a certain amount of fine aggregate is used to fill some gaps, forming a structure with both large gaps and certain stability. Such a setting can not only ensure that rainwater has a channel to penetrate, but also ensure that the bottom layer 4 will not be excessively deformed or damaged under the action of vehicle load.

[0038] See also Figure 1 and Figure 2 The base layer 3 is paved with asphalt-stabilized gravel. Asphalt-stabilized gravel is a base material formed by bonding gravel together with asphalt as a binder. Asphalt-stabilized gravel is a structure layer with a certain strength. The interlocking of gravel can effectively transfer and disperse vehicle loads. Asphalt plays a filling and bonding role, making the entire structure a whole. This structure can withstand large traffic loads, whether it is static vehicle weight or dynamic vehicle impact, it can cope with it well, so that the base layer 3 can provide solid support for the road surface.

[0039] The working principle of the present invention is as follows: first, in rainy weather, rainwater falls on the surface of the surface layer 4, the surface of the surface layer 4 is set to be high in the middle and low around, a large amount of rainwater is drained to the cover plates 7 on both sides of the road through the inclined road surface, the rainwater on the top of the cover plates 7 flows through the filter screen 6 and falls into the drainage trough 5, a small amount of rainwater penetrates through the surface layer 4 to the support layer 41 at the bottom of the surface layer 4, the interior of the support layer 41 is set to be honeycomb-shaped, and a water diversion hole 9 is installed at the bottom of the support layer 41, the rainwater that penetrates into the interior of the surface layer 4 is gathered into the water diversion hole 9 through the honeycomb-shaped support layer 41, and the two ends of the water diversion hole 9 are connected to the road surface The drainage grooves 5 on both sides will drain the rainwater that penetrates into the surface layer 4 into the drainage grooves 5 through the water diversion holes 9. A very small amount of rainwater may penetrate into the base layer 3 and the cushion layer 2. The base layer 3 will evenly distribute the vehicle load transmitted from the surface layer 4 on the roadbed to ensure the overall stability of the pavement structure. A waterproof membrane 23 is laid in the cushion layer 2. The waterproof membrane 23 will divert the rainwater that penetrates into the base layer 3 and the cushion layer 2 into the drainage grooves 5 through the drainage holes 10. The antifreeze layer 21 at the bottom end of the cushion layer 2 has good thermal insulation performance, which effectively prevents frost heave of the soil base layer 1 and provides stable support for the overall pavement structure.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An asphalt pavement structure comprising a surface layer (4) and a soil base layer (1), characterized in that: A support layer (41) is provided at the bottom of the surface layer (4), and a water diversion hole (9) is provided at the bottom of the support layer (41); a base layer (3) is provided at the bottom of the support layer (41); a cushion layer (2) is provided at the top of the base layer (3); the soil base layer (1) is located at the bottom of the cushion layer (2); drainage grooves (5) are provided on both sides of the surface layer (4), and a curbstone (8) is installed on one side of the drainage groove (5).

2. The asphalt pavement structure according to claim 1, characterized in that: The interior of the support layer (41) is configured in a honeycomb shape, and the support layer (41) is configured with a high middle portion and low sides.

3. The asphalt pavement structure according to claim 1, characterized in that: A filter screen (6) is movably mounted on the top of the drainage trough (5), and a cover plate (7) is provided on the top of the filter screen (6).

4. The asphalt pavement structure according to claim 1, characterized in that: An antifreeze layer (21) and a waterproof layer (22) are provided inside the cushion layer (2), and a waterproof membrane (23) is laid on the bottom of the waterproof layer (22).

5. The asphalt pavement structure according to claim 4, characterized in that: Drain holes (10) are provided on both sides of the waterproof membrane (23), and the drainage holes (10) are connected to the drainage groove (5) and the interior of the waterproof layer (22).

6. The asphalt pavement structure according to claim 4, characterized in that: The paving material of the antifreeze layer (21) is coal slag, which has good thermal insulation performance.

7. The asphalt pavement structure according to claim 1, characterized in that: The surface layer (4) is paved with a high-viscosity modified asphalt containing more coarse aggregate and less fine aggregate.

8. The asphalt pavement structure according to claim 1, characterized in that: The base layer (3) is paved with asphalt-stabilized crushed stone. The asphalt-stabilized crushed stone is a base layer material formed by bonding crushed stones together using asphalt as a binder.

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