Asphalt pavement structure and construction method thereof

Abstract

The present application relates to the field of pavement construction, in particular to an asphalt pavement structure and a construction method thereof, comprising: a roadbed, which is laid on the bottom layer, and a geotextile layer laid above the roadbed; beneficial effects are that: different layers are filled, rammed and leveled from top to bottom, pavement water is collected into the underlying base layer through the water-permeable surface layer, and flows into the filter ditches on both sides of the road shoulder through the net pipe, at the same time, the outside rainwater is filtered into the filter ditches through the filter screen through the well cover groove, when the water level exceeds the drainage hole, it is discharged to both sides, at the same time, the inspector can take out the well cover and the filter screen in turn to observe the water level of the filter ditch, then the water suction pipe is inserted into the filter ditch through the water suction groove, the clamping groove in the ring is inserted into the limiting block, and then the water suction pipe is fixed by rotating to prevent the end from falling off, then the water is pumped out, which avoids the rainwater from staying on the surface of the road for a long time, improves the drying efficiency of the road, and ensures the safety of pedestrians and vehicles on the road.

Description

Technical Field

[0001] This invention relates to the field of road construction technology, specifically to asphalt pavement structures and their construction methods. Background Technology

[0002] Asphalt pavement refers to various types of road surfaces constructed by incorporating road-grade asphalt into mineral materials. Asphalt binders enhance the ability of paving aggregates to resist damage from traffic and natural factors, resulting in a smooth, dust-free, and durable surface. Therefore, asphalt pavement is one of the most widely used high-grade road surfaces in road construction.

[0003] In existing technologies, common asphalt pavement methods simply involve replacing the asphalt surface layer and relying on the transverse slope to naturally dissipate excess water. However, when the asphalt surface layer becomes saturated with water and cannot quickly penetrate downwards, a large amount of water accumulates on the surface, affecting the safety of pedestrians and vehicles. Therefore, this invention proposes an asphalt pavement structure and its construction method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an asphalt pavement structure and its construction method to solve the problem mentioned in the background art that common asphalt pavements only replace the asphalt pavement surface layer and rely on the transverse slope to naturally dissipate excess water. When the asphalt pavement surface layer is saturated with water and cannot quickly penetrate downwards, a large amount of water accumulates on the surface, affecting the safety of pedestrians and vehicles on the road.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an asphalt pavement structure, comprising:

[0006] The roadbed is laid at the bottom layer, and a geotextile layer is laid on top of the roadbed. A base course is laid on top of the geotextile layer. The base course includes a subbase course and an upper base course. Several parallel lower mesh pipes are installed at the lower end of the interior of the upper base course. Several upper mesh pipes are installed on the interior of the upper base course near the upper part of the lower mesh pipes. A surface course is laid on top of the base course. Curb stones are provided on both sides of the surface course.

[0007] The road shoulder is made of concrete and is poured at both ends of the road surface. A drainage ditch is left between the road shoulder and the base layer. Several drainage holes are opened on the inner wall of the drainage ditch on the side away from the base layer. Several manhole cover slots are opened above the road shoulder. A filter screen slot is opened below the manhole cover slot. Multiple positioning rods are provided on the inner wall of the filter screen slot. A sliding groove is opened on the lower inner wall of the filter screen slot. A positioning groove is opened below the sliding groove. Multiple positioning blocks are provided on the inner wall of the positioning groove. A limiting block is provided at the upper end of the positioning block. A water pumping groove is opened at the bottom of the filter screen slot.

[0008] A filter screen, the inner wall of which is inserted into the outer wall of a positioning rod, a fixing block is provided at the upper end of the filter screen, and a manhole cover is provided above the fixing block;

[0009] A water pumping pipe is installed after the well cover is opened. An installation ring is fixedly connected to the outer wall of the water pumping pipe. The surface of the installation ring has multiple slots for insertion into the limiting block.

[0010] Preferably, the roadbed is the load-bearing layer of the entire asphalt pavement structure, and the roadbed is laid with crushed stone and then compacted and leveled with cement.

[0011] Preferably, the geotextile layer transmits force to the subgrade through a reinforcing effect to avoid local damage, the base layer has a drainage function, the subbase layer is compacted and leveled using cement-stabilized aggregate, and the upper base layer is compacted and leveled using inorganic-bonded stabilized aggregate.

[0012] Preferably, the lower network pipe and the upper network pipe are installed horizontally and crosswise inside the upper base layer, and the surfaces of the lower network pipe and the upper network pipe are provided with a number of water collection holes.

[0013] Preferably, the surface layer includes a lower layer, a middle layer, and a top layer. The surface layer is made of modified permeable asphalt concrete with particles of different sizes, and the particle size decreases from bottom to top. The curbstone is fixed by concrete pouring.

[0014] Preferably, the road shoulder is made of concrete, the positioning rod is fixed by concrete pouring after being pre-embedded, the positioning block is fixed by pre-embedded, the upper end of the positioning block is fixedly connected to the outer wall of the limiting block, and the water trough connects the filter ditch to the outside.

[0015] Preferably, the lower end of the fixing block is fixedly connected to the upper outer wall of the filter screen, the upper end of the fixing block abuts against the bottom outer wall of the manhole cover, and a handle is fixedly connected to the upper outer wall of the manhole cover.

[0016] Preferably, a limiting groove is provided on one side of the card slot, which is slidably connected to the outer wall of the positioning block.

[0017] A construction method for an asphalt pavement structure includes the following steps:

[0018] S1: First, after filling, compacting and leveling the roadbed, lay the earth and wood cloth layer on the roadbed and level it.

[0019] S2: Next, the base layer is laid, compacted and leveled from bottom to top. At the same time, when laying the upper base layer, the lower and upper network pipes are buried and compacted together with the upper base layer.

[0020] S3: Then, the surface layer is laid, compacted and leveled from bottom to top according to the particle size. Then, the curb stones are fixed to both sides of the surface layer by concrete pouring. Then, concrete shoulders are poured on both sides, with filter ditches and drainage holes reserved in them.

[0021] S4: Finally, the manhole cover groove, filter screen groove, slide groove, positioning groove and pumping groove are opened in sequence above the filter ditch to connect with the filter ditch. Finally, the filter screen and manhole cover are installed.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] The process involves filling, compacting, and leveling different layers from top to bottom. Water collected on the road surface enters the underlying base layer through the permeable surface layer and flows into the drainage ditches on both sides of the shoulder through the network pipes. Simultaneously, rainwater from the outside flows through the manhole cover grooves and is filtered by the filter screen into the drainage ditches. When the water level exceeds the drainage hole, it is discharged to both sides. Meanwhile, inspectors can remove the manhole covers and filter screens one by one to observe the water level in the drainage ditches. Then, the pumping pipe is inserted into the drainage ditch through the pumping channel. After inserting the locking block into the slot in the installation ring, the pumping pipe is rotated to fix it and prevent one end from falling off. Then, the water is pumped out, preventing rainwater from remaining on the road surface for a long time, improving the road surface drying efficiency, and thus ensuring the safety of pedestrians and vehicles on the road. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 3 This is a half-sectional view of the overall structure of the present invention;

[0027] Figure 4 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 5 For the present invention Figure 1 Enlarged view of the structure of region A in the middle;

[0029] Figure 6 For the present invention Figure 2 Enlarged view of the structure of region B in the middle;

[0030] Figure 7 For the present invention Figure 3 Enlarged view of the structure of region C in the middle;

[0031] Figure 8 For the present invention Figure 4 Enlarged view of the structure of region D in the middle;

[0032] Figure 9 For the present invention Figure 8Enlarged view of the structure of region E in the middle.

[0033] In the diagram: 1. Subgrade; 2. Geotextile layer; 3. Base course; 31. Subbase course; 32. Upper base course; 33. Lower network pipe; 34. Network pipe; 4. Surface course; 41. Lower layer; 42. Middle layer; 43. Upper layer; 5. Curbstone; 6. Shoulder; 61. Drainage ditch; 611. Drainage hole; 62. Manhole cover groove; 63. Filter screen groove; 63. Positioning rod; 64. Sliding groove; 65. Positioning slot; 651. Limiting block; 652. Pumping trough; 66. Filter screen; 67. Fixing block; 671. Manhole cover; 68. Handle; 681. Pumping pipe; 69. Installation ring; 691. Slot; 692. Limiting slot; 693. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0038] Example 1:

[0039] Please see Figures 1 to 9 The present invention provides a technical solution: an asphalt pavement structure, comprising:

[0040] Subgrade 1 is laid at the bottom layer and serves as the load-bearing layer for the entire asphalt pavement. A geotextile layer 2 is laid on top of Subgrade 1 to isolate the layers and prevent erosion. Above the geotextile layer 2 is the base course 3, which includes a subbase course 31 and an upper base course 32. Several parallel lower mesh pipes 33 are installed at the lower end of the upper base course 32, and several upper mesh pipes 34 are installed near the upper part of the lower mesh pipes 33. These mesh pipes collect and drain moisture from the base course 3. Above the base course 3 is the surface course 4, which has a certain elastic stress to improve load-bearing strength. Curbstones 5 are provided on both sides of the surface course 4. Subgrade 1 is the load-bearing layer of the entire asphalt pavement structure. Subgrade 1 is laid with crushed stone, mixed with cement, and then compacted and leveled. The strength of the subgrade 1 is improved. The geotextile layer 2 transmits force to the subgrade 1 through the reinforcing effect to avoid local damage. The base course 3 has the function of drainage to prevent water from remaining on the surface of the road. The subbase course 31 is compacted and leveled with cement-stabilized aggregate to further improve the strength of the road. The upper base course 32 is compacted and leveled with combined stabilized aggregate. The lower network pipe 33 and the upper network pipe 34 are horizontally and crosswise installed inside the upper base course 32. Several water collection holes are opened on the surface of the lower network pipe 33 and the upper network pipe 34. The surface course 4 includes a lower layer 41, a middle layer 42 and an upper layer 43. The surface course 4 is made of modified permeable asphalt concrete with different particle sizes. The particle size of the surface course 4 decreases from bottom to top. The surface course 4 with higher strength is closer to the road surface. The curbstone 5 is fixed by concrete pouring.

[0041] Shoulder 6, made of concrete, is cast at both ends of the road surface. A drainage ditch 61 is provided between shoulder 6 and base course 3 to collect water from the drainage network. Several drainage holes 611 are formed on the inner wall of the drainage ditch 61 away from base course 3. When the water level in the drainage ditch 61 exceeds a certain level, it is discharged to both sides through the drainage holes 611. Several manhole cover slots 62 are formed above shoulder 6, and filter screen slots 63 are formed below the manhole cover slots 62. Multiple positioning rods 631 are provided on the inner wall of the filter screen slots 63 for positioning and installing the filter screens 67. A drainage ditch 63 is formed on the lower inner wall of the filter screen slots 63. There is a chute 64, and a positioning groove 65 is provided below the chute 64. Multiple positioning blocks 651 are provided on the inner wall of the positioning groove 65. A limiting block 652 is provided at the upper end of the positioning block 651. It works with the mounting ring 691 on the outer side of the water pumping pipe 69 to facilitate its installation and fixation. A water pumping groove 66 is provided at the bottom end of the filter screen groove 63. The road shoulder 6 is made of concrete. The positioning rod 631 is pre-embedded and fixed by concrete pouring. The positioning block 651 is pre-embedded and fixed. The upper end of the positioning block 651 is fixedly connected to the outer wall of the limiting block 652. The water pumping groove 66 connects the filter ditch 61 with the outside.

[0042] A filter screen 67 is inserted into the inner wall of the filter screen 67 and the outer wall of the positioning rod 631. A fixing block 671 is provided at the upper end of the filter screen 67. A manhole cover 68 is provided above the fixing block 671. The manhole cover 68 presses on the fixing block 671 to improve the installation strength of the filter screen 67. The lower end of the fixing block 671 is fixedly connected to the upper outer wall of the filter screen 67. The upper end of the fixing block 671 abuts against the bottom outer wall of the manhole cover 68. A handle 681 is fixedly connected to the upper outer wall of the manhole cover 68.

[0043] The water pumping pipe 69 is installed after the well cover 68 is opened. The outer wall of the water pumping pipe 69 is fixedly connected to the installation ring 691. The surface of the installation ring 691 has multiple slots 692 that are inserted into the limiting block 652. One side of the slot 692 has a limiting groove 693 that is slidably connected to the outer wall of the positioning block 651, which facilitates the installation and fixing of the water pumping pipe 69 during water pumping.

[0044] The designed asphalt pavement structure prevents rainwater from remaining on the surface of the road for extended periods, improving the road's drying efficiency and thus ensuring the safety of pedestrians and vehicles on the road.

[0045] Example 2:

[0046] Based on Example 1, this example proposes a construction method for asphalt pavement structures, including the following steps:

[0047] S1: First, after filling, compacting and leveling the roadbed 1, lay the earth and wood cloth layer 2 on the roadbed 1 and level it.

[0048] S2: Next, the base layer 3 is laid, compacted and leveled from bottom to top. At the same time, when laying the upper base layer 32, the lower network pipe 33 and the upper network pipe 34 are buried and compacted together with the upper base layer 32.

[0049] S3: Then, the surface layer 4 is laid, compacted and leveled from bottom to top according to the particle size. Then, the curbstone 5 is fixed to both sides of the surface layer 4 by concrete pouring. Then, concrete shoulders 6 are poured on both sides, in which filter trenches 61 and drainage holes 611 are reserved.

[0050] S4: Finally, a manhole cover groove 62, a filter screen groove 63, a sliding groove 64, a positioning groove 65 and a pumping groove 66 are sequentially opened above the filter ditch 61 to connect with the filter ditch 61. Finally, the filter screen 67 and the manhole cover 68 are installed.

[0051] When this device is working, it fills, compacts, and levels different layers from top to bottom. Water collected on the road surface enters the underlying base layer 3 through the permeable surface layer 4 and flows into the filter trenches 61 on both sides of the shoulder 6 through the network pipe. At the same time, rainwater from the outside enters the filter trenches 61 through the manhole cover groove 62 and is filtered by the filter screen 67. When the water level exceeds the drainage hole 611, it is discharged to both sides. Meanwhile, inspectors can remove the manhole cover 68 and the filter screen 67 in turn to observe the water level in the filter trenches 61. Then, the pumping pipe 69 is inserted into the filter trench 61 through the pumping channel 66. The locking groove 692 in the mounting ring 691 is inserted into the limiting block 652 and rotated to fix the pumping pipe 69 to prevent one end from falling off. Then, the water is pumped out, which avoids rainwater from staying on the surface of the road for a long time, improves the drying efficiency of the road surface, and ensures the safety of pedestrians and vehicles on the road.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An asphalt pavement structure, characterized by: Include: Roadbed (1), the roadbed (1) is laid in the bottom layer, the roadbed (1) is laid above the geotextile layer (2), the geotextile layer (2) is laid above the base layer (3), the base layer (3) includes bottom base layer (31) and upper base layer (32), the inside lower end of the upper base layer (32) is provided with a plurality of parallelly arranged lower net tubes (33), the inside of the upper base layer (32) is provided with a plurality of upper net tubes (34) above the lower net tube (33), the upper base layer (3) is laid above the surface layer (4), the both sides of the surface layer (4) are provided with kerb stones (5); Road shoulder (6), the road shoulder (6) is made of concrete, the road shoulder (6) is poured at both ends of the pavement, the filter water ditch (61) is left between the road shoulder (6) and the base layer (3), a plurality of drainage holes (611) are formed in the inner wall of the side of the filter water ditch (61) away from the base layer (3), a plurality of well cover grooves (62) are formed in the upper side of the road shoulder (6), a filter screen groove (63) is formed below the well cover groove (62), a plurality of positioning rods (631) are arranged on the inner wall of the filter screen groove (63), a sliding groove (64) is formed in the lower inner wall of the filter screen groove (63), a positioning groove (65) is formed below the sliding groove (64), a plurality of positioning blocks (651) are arranged on the inner wall of the positioning groove (65), a limiting block (652) is arranged on the upper end of the positioning block (651), a water pumping groove (66) is formed in the bottom end of the filter screen groove (63); Filter screen (67), the inner wall of the filter screen (67) and the outer wall of the positioning rod (631) are inserted, the upper end of the filter screen (67) is provided with a fixing block (671), the upper side of the fixing block (671) is provided with a well cover (68); Water pumping pipe (69), the water pumping pipe (69) is installed after the well cover (68) is opened, the outer wall of the water pumping pipe (69) is fixedly connected with a mounting ring (691), a plurality of clamping grooves (692) are formed in the surface of the mounting ring (691) and are inserted with the limiting block (652); The road shoulder (6) is made of concrete pouring, the positioning rod (631) is fixed by pre-buried concrete pouring, the positioning block (651) is fixed by pre-buried, the upper end of the positioning block (651) and the outer wall of the limiting block (652) are fixedly connected, the water pumping groove (66) communicates the filter water ditch (61) with the outside; The lower end of the fixing block (671) and the upper side of the outer wall of the filter screen (67) are fixedly connected, the upper end of the fixing block (671) and the bottom side of the outer wall of the well cover (68) are abutted, the upper side of the outer wall of the well cover (68) is fixedly connected with a handle (681); One side of the clamping groove (692) is provided with a limiting groove (693) which is slidably connected with the outer wall of the positioning block (651).

2. An asphalt pavement structure according to claim 1, characterised in that: The roadbed (1) is the bearing layer of the entire asphalt pavement structure, the roadbed (1) is laid with gravel and then is tamped and leveled by adding cement.

3. An asphalt pavement structure according to claim 2, characterised in that: The geotextile layer (2) transmits force to the roadbed by stiffening effect to avoid local damage, the base layer (3) has a drainage function, the bottom base layer (31) is tamped and leveled by cement stabilized material particles, and the upper base layer (32) is tamped and leveled by inorganic combined stabilized material particles.

4. An asphalt pavement structure according to claim 3, characterised in that: The lower net pipe (33) and the upper net pipe (34) are horizontally crossed and installed inside the upper base layer (32), and a plurality of water collecting holes are formed on the surfaces of the lower net pipe (33) and the upper net pipe (34).

5. An asphalt pavement structure according to claim 4, characterised in that: The surface layer (4) includes a lower layer (41), a middle layer (42), and an upper layer (43), the surface layer (4) is made of modified water permeable asphalt concrete with different particle sizes, the particle size of the surface layer (4) decreases from bottom to top, and the curb (5) is fixed by concrete pouring.

6. A method of constructing an asphalt pavement structure according to any one of claims 1 to 5, characterised in that: The method comprises the following steps: S1: first, after filling, tamping and leveling the roadbed (1), the geotextile layer (2) is laid on the roadbed (1) and leveled; S2: second, the base layer (3) is laid and tamped and leveled from bottom to top, and at the same time, the lower net pipe (33) and the upper net pipe (34) are buried with the upper base layer (32) and tamped together; S3: then, the surface layer (4) is laid and tamped and leveled from bottom to top according to the particle size, then the curb (5) is fixed on both sides of the surface layer (4) by concrete pouring, and then the concrete shoulder (6) is poured on both sides and the filter ditch (61) and the drainage hole (611) are reserved therein; S4: finally, the well cover groove (62), the filter screen groove (63), the sliding groove (64), the positioning groove (65) and the water pumping groove (66) are sequentially opened downward above the filter ditch (61) to communicate with the filter ditch (61), and finally the filter screen (67) and the well cover (68) are installed.

Images