An ecological two-color asphalt road structure and construction method

Abstract

The present invention belongs to the technical field of road construction. The present invention provides an ecological two-color asphalt road structure, including a road structure arranged on the top of a plain soil roadbed and laid along a designed route. The asphalt road structure includes a graded crushed stone layer, a permeable concrete layer and a colored asphalt layer laid in sequence from bottom to top. The construction method thereof includes the following steps: S1, construction preparation; S2, road structure construction; S3, stainless steel formwork installation; S4, laying a crushed stone layer and permeable concrete; S5, colored asphalt layer construction. The present invention uses permeable asphalt and permeable concrete, graded crushed stone and other permeable materials in combination with vertical pipes, horizontal cross pipes and longitudinal pipes along the line to form a pipe network type rainwater collection system, thereby performing road infiltration and drainage, ensuring that the road is not waterlogged and has normal drainage; and the rainwater collected by the rainwater collection system can be infiltrated through sponge strips to irrigate greening on both sides of the road, which is both ecological and environmentally friendly and can perform daily watering and maintenance on plants.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to an ecological two-color asphalt road structure and a construction method. Background Art

[0002] With the progress of society and the improvement of people's requirements for the aesthetics of garden roads, colored asphalt pavement has begun to be widely used in the construction of municipal roads. The surface of colored asphalt pavement is paved with colored asphalt, which has a brighter color and can divide traffic, increase brightness, and beautify the road environment. However, the existing garden roads use channel steel for edge formwork reinforcement, which is prone to leakage in curved sections. The upper asphalt is edged with stone, and the curved sections also need to be cut and shaped, which makes the construction speed slow.

[0003] The construction technology of two-color asphalt splicing in curved sections is difficult. After the construction of a single color of asphalt is completed, it is necessary to cut with a line before the subsequent color asphalt construction can be carried out, which is very unfavorable for the construction and paving of the entire garden road and the construction progress.

[0004] The garden-built two-color asphalt road is a circular landscape road with many curved sections and a small longitudinal slope of the road surface. Most of the drainage is through the transverse slope of the road surface. Precipitation on rainy days causes rainwater to pass directly horizontally from the surface layer. The curved corners are prone to water accumulation and waterlogging. Since the asphalt pavement is subjected to loads from all directions for a long time, rainwater or road surface water can easily penetrate into the interior of the asphalt pavement through cracks and erode the roadbed, thereby damaging the roadbed. Summary of the Invention

[0005] In order to solve the defects of the prior art, the purpose of the present invention is to provide a two-color asphalt road structure and a construction method.

[0006] A technical solution adopted in the present invention is:

[0007] An ecological two-color asphalt road structure comprises a road structure arranged on top of a plain soil roadbed and paved along a designed route, the asphalt road structure comprising a graded crushed stone layer, a permeable concrete layer and a colored asphalt layer paved in sequence from bottom to top, stainless steel templates with adjustable curvature are arranged on the left and right sides of the road structure along the designed route, a plurality of fixed screws are arranged equidistantly along the designed route on the side of the stainless steel template away from the road structure, the bottom of each fixed screw is plugged into the top of the plain soil roadbed, a clamping ring is welded on the surface of the fixed screw and near the top of the fixed screw and the top of the plain soil roadbed, the fixed screw fixes the stainless steel template through the clamping ring, a plurality of asphalt centerline dividing plates are evenly arranged at the top center of the permeable concrete layer and along the designed route, colored asphalt layers of different colors are laid on both sides of the asphalt centerline dividing plate, a rainwater collection system is buried between the graded crushed stone layer and the plain soil roadbed along the designed route, the rainwater collection system is used to collect rainwater falling on the surface of the road structure and recharge it into the root systems of the trees on both sides.

[0008] Optionally, the rainwater collection system includes a recovery main pipe, which is buried inside the plain soil roadbed along the designed route and near the top. Several stainless steel pipes are evenly arranged on both sides of the recovery main pipe and along the direction of the designed route. One end of each stainless steel pipe extends to the vicinity of the root system of the tree. A sponge strip is provided at one end of the stainless steel pipe to absorb rainwater and penetrate into the tree roots for irrigation.

[0009] Optionally, a plurality of vertical collection pipes are evenly and vertically connected on the top of the recovery main pipe along the design line, an anti-seepage geotextile is laid on the top of the bare soil roadbed, and horizontal cross pipes are connected on the left and right sides of each vertical collection pipe and located on the top of the anti-seepage geotextile. A plurality of longitudinal pipes along the design line are arranged horizontally and equidistantly on the top of each horizontal cross pipe on the same side, and each longitudinal pipe along the line is connected to each horizontal cross pipe on the same side.

[0010] Optionally, the surfaces of the collecting vertical pipes, horizontal cross pipes and longitudinal pipes along the line are uniformly provided with water-permeable holes, and the outside is wrapped with permeable geotextiles.

[0011] Optionally, the top surfaces of the permeable concrete layer and the graded crushed stone layer are configured as V-shaped inclined surfaces that sink along the neutral line, and the slopes on both sides of the inclined surfaces are both 1.5%.

[0012] Optionally, two adjacent fixing screws on the same side are spaced 2 m apart along a straight section of the designed route and 1 m apart along a curved section of the designed route.

[0013] Optionally, two adjacent stainless steel templates are connected end to end along the designed line through a connecting plate. Connecting holes are opened at the four corners of the stainless steel template and the connecting plate. Fixing screws are provided in the connecting holes. The stainless steel template is fastened to the connecting plate through the fixing screws.

[0014] Optionally, the two ends of the asphalt centerline separator are respectively inserted into two supporting grooves, and the two supporting grooves are respectively welded to the opposite side surfaces of two adjacent collecting vertical pipes. A partition fixing device is provided in the center of the bottom of the asphalt centerline separator, and the asphalt centerline separator is fixed to the top surface of the permeable concrete layer through the partition fixing device.

[0015] Optionally, the distance between the top of the recovery main pipe and the top of the bare soil roadbed is not less than 300 mm, and the density coefficient is not less than 0.93.

[0016] On the other hand, a construction method of an ecological two-color asphalt road structure comprises the following steps:

[0017] S1. Construction Preparation: Preparatory work before construction includes the layout of water supply and power supply pipelines at the construction site, investigation and collection of surrounding environmental information, review of the on-site measurement control network, installation of additional construction control points, site survey and design index review, measurement and calculation of original topographic maps of the cut and fill areas, and technical and safety briefings for on-site workers.

[0018] S2, road structure construction;

[0019] S21. Surface Clearance: Use manual labor and bulldozers to clear the site, remove grass, debris, humus, and excavate the topsoil, remove construction debris within the roadbed, and excavate the foundations of buildings within the roadbed before proceeding with roadbed construction.

[0020] S22. Construction of bare soil roadbed: Utilize the soil resources within the project area. The filler material for the bare soil roadbed should be coarse-grained soil with a certain grade, such as crushed, gravelly, and sandy soil. The thickness of each fill layer should not exceed 30 cm and should not be less than 20 cm. The maximum loose filling thickness should not exceed 30 cm. Each layer of fill should have an overfill width of 40 to 50 cm on each side along the bare soil roadbed to facilitate mechanical compaction and ensure sufficient compaction at the edge of the completed embankment.

[0021] S23. Rainwater collection system installation: Based on the requirements of the garden road, select soil that meets the design requirements for layered backfill and compaction of the plain soil roadbed. Set a recovery pipe in the middle of the roadbed according to the direction of the road. Connect the left and right sides of the recovery pipe with stainless steel pipes evenly installed along the designed route. Install sponge strips at the ends of the stainless steel pipes to guide the roots of the trees in the green areas on both sides for seepage irrigation. The sponge strips fill the ends of the stainless steel pipes to ensure rainwater seepage and outflow, playing a role in infiltration maintenance.

[0022] Collection vertical pipes are evenly spaced above the main recovery pipe, with water-permeable holes evenly distributed on their outer walls. A waterproof geotextile is laid on the upper layer of the bare soil roadbed to prevent rainwater from seeping into the roadbed and damaging it. Horizontal transverse pipes and longitudinal pipes along the road are connected to the collection vertical pipes on the geotextile, and water-permeable holes are opened on their outer walls to ensure that rainwater on the road surface can pass through the collection vertical pipes, horizontal transverse pipes, and longitudinal pipes along the road and finally be collected in the main recovery pipe.

[0023] S3. Installation of stainless steel formwork: Stainless steel formwork with adjustable curvature is installed on both sides of the road in the curved section of the designed route. According to the edge line of the road structure, the spacing of the straight section is 2m, and the spacing of the curved section is 1m. The fixed screws are inserted into the plain soil roadbed for fixation. The circular clamps welded on the top and bottom are used to fix it. The stainless steel formwork should be installed firmly, straight, flat and without distortion. The adjacent stainless steel formworks are fastened together by connecting plates to ensure that the steel plate joints are tight and smooth, without leakage, front and back misalignment, and height misalignment. The formwork should be able to ensure that the paving, compaction and leveling equipment does not shift when it is loaded, impacted or vibrated. The formwork extends along the extension direction of the road structure, and a garden road production mold is formed between the two rows of stainless steel formworks.

[0024] S4. Laying the gravel layer and permeable concrete: Before laying, first lay a waterproof geotextile on the top of the plain soil roadbed. Horizontal collection pipes and longitudinal pipes along the line are installed on it. The horizontal collection pipes are installed on both sides of the vertical collection pipes with a certain slope. The bottom of each longitudinal pipe along the line is 2-3 cm higher than the road base. All water pipes are covered with permeable geotextile to ensure normal water permeability and rainwater collection.

[0025] S41. Paving the graded gravel layer: Lay the graded gravel or sand and gravel cushion layer according to the design requirements. The thickness of the gravel layer should be strictly controlled when loading. Before construction of the gravel layer, an elevation control point should be determined on the shoulder every 4 meters to ensure that the gravel thickness does not exceed the designed thickness. After the graded gravel is laid, it should be rolled with a small roller. A small rope should be used to check the road camber and flatness. Any uneven areas should be removed and lowered until the elevation is met. A small amount of water should be sprinkled and rolling should be continued until the gravel is initially stable and there is no obvious displacement.

[0026] S42. Pouring of permeable concrete layer: Permeable concrete is a dry concrete material with a fast initial setting. The transportation time of the mixture should be controlled to no more than 10 minutes according to climatic conditions. No stops should be made during transportation, and the transport machinery must move smoothly. The permeable concrete layer is poured first by pouring the bottom layer of permeable concrete, followed by pouring the surface layer of permeable concrete. The permeable concrete is then cured. The surface layer of the permeable concrete is arranged to be inclined from both sides toward the middle rainwater collection vertical pipe 7 at a slope of 1.5%, which can facilitate rainwater collection in the rainwater collection vertical pipe;

[0027] S5. Construction of colored asphalt layer: The colored asphalt layer shall be constructed after the permeable concrete base layer is constructed and maintained. Before construction, asphalt centerline dividers shall be inserted at even intervals in the middle of the road along the extension direction of the road. The asphalt centerline dividers shall be fixed on the permeable concrete pavement by fixing devices to prevent displacement and deformation of the asphalt centerline dividers during the asphalt paving operation. The asphalt centerline dividers shall be arranged according to the centerline separation direction of the two-color asphalt. The colored asphalt concrete on one side shall be paved first. After the asphalt concrete maintenance is completed, the colored asphalt road on the other side can be paved.

[0028] The beneficial effects brought about by the rapid erection device and method of the coke oven body masonry platform provided by the present invention include at least:

[0029] 1.1. The present invention uses permeable materials such as permeable asphalt, permeable concrete, graded crushed stone, etc. in combination with vertical collection pipes, horizontal cross pipes and longitudinal pipes along the road to form a pipe network type rainwater collection system, thereby achieving road infiltration and drainage, ensuring that there is no water accumulation on the road and normal drainage; and the rainwater collected by the rainwater collection system can penetrate through sponge strips to irrigate the greening on both sides of the road, which is both ecological and environmentally friendly and can be used for daily watering and maintenance of plants.

[0030] 2.2. The present invention controls the separation construction of asphalt concrete by welding a supporting groove on the drainage vertical pipe and inserting and installing an asphalt centerline partition plate, thereby improving the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a schematic diagram of the overall planar cross-sectional structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the plan structure of the rainwater collection system;

[0034] Figure 3 This is a schematic diagram of the asphalt intermediate partition structure;

[0035] Figure 4 This is a schematic diagram of the stainless steel template connection structure;

[0036] Figure 5 It is a flow chart of the construction method of the present invention.

[0037] Explanation of the accompanying symbols: 1. Bare soil roadbed; 2. Graded crushed stone layer; 3. Permeable concrete layer; 4. Stainless steel formwork; 41. Connection hole; 42. Connection plate; 43. Fixing screw; 5. Fixing screw; 6. Snap ring; 7. Collection vertical pipe; 8. Stainless steel pipe; 9. Sponge bar; 10. Recovery main pipe; 11. Horizontal cross pipe; 12. Longitudinal pipe along the line; 13. Support trough; 14. Asphalt centerline separator; 15. Geotextile; 16. Colored asphalt layer; 17. Partition fixing device; 18. Tree. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] Example 1

[0040] Specific as Figure 1-4 Provided is an ecological two-color asphalt road structure, including a road structure arranged on top of a plain soil roadbed 1 and paved along a designed route, the asphalt road structure including a graded crushed stone layer 2, a permeable concrete layer 3, and a colored asphalt layer 16 laid in sequence from bottom to top, and a stainless steel template 4 with adjustable curvature is arranged on both sides of the road structure along the designed route, and a plurality of fixed screws 5 are arranged at equal intervals along the designed route on the side of the stainless steel template 4 away from the road structure, and the bottom of each fixed screw 5 is plugged into the top of the plain soil roadbed 1, and the fixed screw 5 is fixed to the top of the plain soil roadbed 1. Snap rings 6 are welded on the surface and near its top and the top of the plain soil roadbed 1. The fixing screws 5 fix the stainless steel formwork 4 through the snap rings 6. Several asphalt centerline dividing plates 14 are evenly arranged in the center of the top of the permeable concrete layer 3 and along the designed line. Colored asphalt layers 16 of different colors are laid on both sides of the asphalt centerline dividing plate 14. A rainwater collection system is buried between the graded gravel layer 2 and the plain soil roadbed 1 along the designed line direction. The rainwater collection system is used to collect rainwater falling on the surface of the road structure and recharge it to the roots of the trees 18 on both sides.

[0041] The rainwater collection system includes a recovery main pipe 10, which is buried inside the plain soil roadbed 1 along the designed route and near the top. Several stainless steel pipes 8 are evenly arranged on both sides of the recovery main pipe 10 and along the direction of the designed route. One end of each stainless steel pipe 8 extends to the vicinity of the root system of the tree 18. A sponge strip 9 is provided at one end of the stainless steel pipe 8 to absorb rainwater and penetrate into the root system of the tree 18 for irrigating the root system.

[0042] A plurality of vertical collecting pipes 7 are evenly and vertically connected to the top of the recovery main pipe 10 along the designed line. An anti-seepage geotextile 15 is laid on the top of the bare soil roadbed 1. Horizontal transverse pipes 11 are connected to the left and right sides of each vertical collecting pipe 7 and located on the top of the anti-seepage geotextile 15. A plurality of longitudinal pipes 12 are arranged horizontally and equidistantly on the top of each horizontal transverse pipe 11 on the same side along the designed line. Each longitudinal pipe 12 is connected to each horizontal transverse pipe 11 on the same side.

[0043] The surfaces of the collecting vertical pipe 7, the horizontal cross pipe 11 and the longitudinal pipes 12 along the line are uniformly provided with water-permeable holes, and the outside is wrapped with a permeable geotextile 15.

[0044] The top surfaces of the permeable concrete layer 3 and the graded crushed stone layer 2 are set as V-shaped inclined surfaces sinking along the neutral line, and the slopes on both sides of the inclined surfaces are both 1.5%.

[0045] Specifically, a rainwater collection system is set up inside the road structure, a φ200 recovery main pipe 10 is buried inside the plain soil roadbed 1 along the designed route, and the height of the earth filling on the top of the pipe is not less than 300mm, and the density coefficient is ≥0.93, and vertical collection pipes 7 are set at equal intervals along the route of the recovery main pipe 10, and horizontal cross pipes 11 with a certain inclination are set on both sides of the branch pipe, and multiple rows of longitudinal pipes 12 along the line are set at equal intervals on both sides of the road structure to connect with each horizontal cross pipe 11, thereby forming a rainwater collection system covering the entire road structure. The entire system is distributed on the top of the plain soil roadbed 1 and at the bottom of the graded gravel layer 2. When rainwater falls on the surface of the road structure, the rainwater penetrates downward through the colored asphalt layer 16, the permeable concrete layer 3 and the graded gravel layer 2, and then passes through the vertical collection pipe 7. , the water enters the collection channel through the permeable holes on the surface of the horizontal cross pipe 11 and the longitudinal pipe 12 along the line, and is finally collected into the recovery main pipe 10. By setting a φ20 stainless steel pipe 8 along the route on both sides of the recovery main pipe 10, and extending one end of the stainless steel pipe 8 to the vicinity of the root system of the tree 18, and filling one end of it with a sponge strip 9, it is convenient to utilize the rainwater absorbed in the sponge strip 9 to penetrate and irrigate the green trees 18 on both sides of the road of this ecological two-color asphalt road structure. The road is infiltrated and drained through permeable materials such as permeable asphalt and permeable concrete, graded gravel, etc. in conjunction with the road vertical pipe and the horizontal collection pipe, ensuring that there is no water accumulation on the road and normal drainage. The rainwater collected by the road drainage system penetrates through the sponge strip 9 to irrigate the greening on both sides of the road, which is both ecological and environmentally friendly and can carry out daily watering and maintenance of plants.

[0046] The interval between two adjacent fixing screws 5 on the same side is 2 m along the straight section of the designed route and 1 m along the curved section of the designed route.

[0047] Two adjacent stainless steel templates 4 are connected end to end along the designed line through a connecting plate 42. Connecting holes 41 are correspondingly opened at the four corners of the stainless steel template 4 and the connecting plate 42. Fixing screws 43 are provided in the connecting holes 41. The stainless steel template 4 is fastened to the connecting plate 42 through the fixing screws 43.

[0048] Specifically, a curved stainless steel template 4 with adjustable curvature is installed on both sides of the curved section of the ecological two-color asphalt road structure, and is fixed by means of a clamping ring 6 welded on the top and bottom. The fixed screw 5 is inserted into the plain soil roadbed 1 for fixing according to the spacing of 2m for the straight section and 1m for the curved section along the edge of the road. The stainless steel template 4 is installed firmly, straightly, flatly and without distortion, thereby ensuring the construction efficiency and the appearance quality of the finished product.

[0049] The two ends of the asphalt centerline partition plate 14 are respectively inserted into the two supporting grooves 13, and the two supporting grooves 13 are respectively welded to the opposite side surfaces of two adjacent collecting vertical pipes 7. A partition fixing device 17 is provided at the bottom center of the asphalt centerline partition plate 14, and the asphalt centerline partition plate 14 is fixed to the top surface of the permeable concrete layer 3 through the partition fixing device 17.

[0050] The distance between the top of the recovery main pipe 10 and the top of the plain soil roadbed 1 is not less than 300 mm, and the compaction coefficient is not less than 0.93.

[0051] Example 2

[0052] like Figure 5 As shown, a construction method of an ecological two-color asphalt road structure includes the following steps:

[0053] S1. Construction Preparation: Preparatory work before construction includes the layout of water supply and power supply pipelines at the construction site, investigation and collection of surrounding environmental information, review of the on-site measurement control network, installation of additional construction control points, site survey and design index review, measurement and calculation of original topographic maps of the cut and fill areas, and technical and safety briefings for on-site workers.

[0054] S2, road structure construction;

[0055] S21. Surface Clearance: Use manual labor and bulldozers to clear the site, remove grass, debris, humus, and excavate the topsoil, remove construction debris within the roadbed, and excavate the foundations of buildings within the roadbed before proceeding with roadbed construction.

[0056] S22. Construction of Plain Soil Roadbed 1: Utilize the soil resources within the project area. The filler for Plain Soil Roadbed 1 should be coarse-grained soil with a certain grade, such as crushed, gravelly, and sandy soils. The thickness of each layer should not exceed 30 cm and should not be less than 20 cm. The maximum loose filling thickness should not exceed 30 cm. Each layer of fill should have an overfill width of 40 to 50 cm on each side along the lateral direction of Plain Soil Roadbed 1 to facilitate mechanical compaction and ensure sufficient compaction at the edge of the completed embankment.

[0057] S23. Rainwater collection system installation: Select soil that meets the design requirements according to the requirements of the garden road, and perform layered backfill and compaction on the plain soil roadbed 1. Set a recovery pipe 10 in the middle of the roadbed according to the direction of the road. Connect the left and right sides of the recovery pipe 10 to stainless steel pipes 8 evenly installed along the designed route. Sponge strips 9 are installed at the ends of the stainless steel pipes 8 to guide the roots of trees 18 in the green areas on both sides for seepage irrigation. The sponge strips 9 fill the ends of the stainless steel pipes 8 to ensure that rainwater seeps out and plays a role in infiltration maintenance.

[0058] Collection vertical pipes 7 are evenly spaced on the upper part of the recovery main pipe 10, and water-permeable holes are evenly distributed on the outer wall. A waterproof geotextile 15 is laid on the upper layer of the plain soil roadbed 1 to prevent rainwater from seeping into the roadbed and damaging it. Horizontal cross pipes 11 and longitudinal pipes 12 along the line are set on the geotextile 15, and water-permeable holes are opened on the outer wall of the geotextile 15 to ensure that rainwater on the road surface can pass through the collection vertical pipes 7, horizontal cross pipes 11 and longitudinal pipes 12 along the line and finally be collected in the recovery main pipe 10;

[0059] S3. Installation of stainless steel formwork 4: Stainless steel formwork 4 with adjustable curvature is installed on both sides of the road in the curved section of the designed route. According to the edge line of the road structure, the spacing of the straight section is 2m, and the spacing of the curved section is 1m. The fixing screws 5 are inserted into the plain soil roadbed 1 for fixing, and are fixed by the annular clamps 6 welded on the top and bottom. When installing the stainless steel formwork 4, it should be stable, straight, flat, and without distortion. The adjacent stainless steel formworks 4 are fastened together by connecting plates 42 to ensure that the steel plate joints are tight and smooth, and there should be no leakage, no misalignment, and no height difference. The formwork should be able to ensure that the paving, compaction, and leveling equipment will not shift when subjected to load, impact, and vibration. The formwork extends along the extension direction of the road structure, and a garden road production mold is formed between the two rows of stainless steel formworks 4;

[0060] S4. Laying the gravel layer and permeable concrete: Before laying, a waterproof geotextile 15 is laid on the top of the plain soil roadbed 1. The horizontal collection pipes and the longitudinal pipes 12 along the line are installed on it. The horizontal collection pipes are installed with a certain slope on both sides of the collection vertical pipe 7. The bottom end of each longitudinal pipe 12 along the line is 2-3 cm higher than the road base. All water pipes are covered with permeable geotextile 15 to ensure normal water permeability and rainwater collection.

[0061] S41. Paving the second graded crushed stone layer: Lay the graded crushed stone or sand and gravel cushion layer according to the design requirements. The thickness of the crushed stone layer should be strictly controlled when loading. Before construction of the crushed stone layer, an elevation control point should be determined on the shoulder every 4 meters to ensure that the crushed stone thickness does not exceed the designed thickness. After the graded crushed stone is laid, it should be rolled with a small roller. A small rope should be used to check the road camber and flatness. Any uneven areas should be removed and lowered until they meet the elevation. A small amount of water should be applied and rolling should be continued until the crushed stone is initially stable and there is no obvious displacement.

[0062] S42. Pouring of permeable concrete layer 3: Permeable concrete is a dry concrete material with a fast initial setting. The transportation time of the mixture should be controlled to no more than 10 minutes according to climatic conditions. No stops should be made during transportation, and the transport machinery must move smoothly. The permeable concrete layer 3 is poured by pouring the bottom layer of permeable concrete first, followed by pouring the surface layer of permeable concrete. The permeable concrete is then cured. The surface layer of the permeable concrete is arranged to slope from both sides toward the middle rainwater collection vertical pipe 77 at a slope of 1.5%, which can facilitate the collection of rainwater by the rainwater collection vertical pipe 7.

[0063] S5. Construction of colored asphalt layer 16: The colored asphalt layer 16 is constructed after the permeable concrete base is constructed and maintained. Before construction, asphalt centerline separators 14 are inserted at even intervals in the middle of the road along the extension direction of the road. The asphalt centerline separators 14 are fixed on the permeable concrete pavement by fixing devices to prevent the asphalt centerline separators 14 from displacement and deformation during the asphalt paving operation. They are arranged according to the centerline separation direction of the two-color asphalt. The colored asphalt concrete on one side is paved first. After the asphalt concrete maintenance is completed, the colored asphalt road on the other side can be paved.

[0064] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An ecological two-color asphalt road structure, comprising a road structure arranged on top of a plain soil roadbed and paved along a designed route, characterized in that: The asphalt road structure includes a graded crushed stone layer, a permeable concrete layer and a colored asphalt layer laid in sequence from bottom to top, and stainless steel templates with adjustable curvature are provided on the left and right sides of the road structure along the design line, and a plurality of fixed screws are equidistantly provided on the side of the stainless steel template away from the road structure along the design line, and the bottom of each fixed screw is plugged into the top of the plain soil roadbed, and a clamping ring is welded on the surface of the fixed screw and near its top and the top of the plain soil roadbed, and the fixed screw fixes the stainless steel template through the clamping ring, and a plurality of asphalt centerline dividing plates are evenly arranged at the top center of the permeable concrete layer and along the design line, and the colored asphalt layers of different colors are laid on both sides of the asphalt centerline dividing plates, and a rainwater collection system is buried between the graded crushed stone layer and the plain soil roadbed along the design line direction, and the rainwater collection system is used to collect rainwater falling on the surface of the road structure and recharge it to the root systems of the trees on both sides; the rainwater collection system includes a recovery main pipe, which is buried along the design line with the plain soil roadbed Inside the soil roadbed and near the top, several stainless steel pipes are evenly arranged on both sides of the recovery main pipe and along the design line direction, one end of each stainless steel pipe extends to the vicinity of the root system of the tree, and a sponge strip is provided at one end of the stainless steel pipe to absorb rainwater and penetrate into the root system of the tree; a plurality of collection vertical pipes are evenly and vertically connected along the design line on the top of the recovery main pipe, and an anti-seepage geotextile is laid on the top of the plain soil roadbed. Horizontal cross pipes are connected on the left and right sides of each collection vertical pipe and at the top of the anti-seepage geotextile. A plurality of longitudinal pipes along the line are equidistantly arranged on the top of each horizontal cross pipe on the same side along the design line, and each longitudinal pipe along the line is connected to each horizontal cross pipe on the same side; the two ends of the asphalt centerline separator are respectively inserted into two supporting grooves, and the two supporting grooves are respectively welded to the opposite side surfaces of two adjacent collection vertical pipes. A partition fixing device is provided at the bottom center of the asphalt centerline separator, and the asphalt centerline separator is fixed to the top surface of the permeable concrete layer through the partition fixing device.

2. The ecological two-color asphalt road structure according to claim 1 is characterized by: The surfaces of the vertical collecting pipes, the horizontal cross pipes and the longitudinal pipes along the line are uniformly provided with water-permeable holes, and the outsides are all wrapped with permeable geotextiles.

3. The ecological two-color asphalt road structure according to claim 2 is characterized by: The top surfaces of the permeable concrete layer and the graded crushed stone layer are configured as V-shaped inclined surfaces that sink along the neutral line, and the slopes on both sides of the inclined surfaces are both 1.5%.

4. The ecological two-color asphalt road structure according to claim 1 is characterized by: The two adjacent fixing screws on the same side are spaced 2 meters apart along the straight section of the designed route and 1 meter apart along the curved section of the designed route.

5. The ecological two-color asphalt road structure according to claim 1 is characterized by: The two adjacent stainless steel templates are connected end to end along the designed line through a connecting plate. Connecting holes are correspondingly opened at the four corners of the stainless steel template and the connecting plate. Fixing screws are provided in the connecting holes. The stainless steel template is fastened to the connecting plate through the fixing screws.

6. The ecological two-color asphalt road structure according to claim 1, characterized in that: The distance between the top of the recovery main pipe and the top of the plain soil roadbed is not less than 300 mm, and the compaction coefficient is not less than 0.

93.

7. A construction method for an ecological two-color asphalt road structure, applied to an ecological two-color asphalt road structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Construction Preparation: Preparatory work before construction includes the layout of water supply and power supply pipelines at the construction site, investigation and collection of surrounding environmental information, review of the on-site measurement control network, installation of additional construction control points, site survey and design index review, measurement and calculation of original topographic maps of the cut and fill areas, and technical and safety briefings for on-site workers. S2, road structure construction; S21. Surface Clearance: Use manual labor and bulldozers to clear the site, remove grass, debris, humus, and excavate the topsoil, remove construction debris within the roadbed, and excavate the foundations of buildings within the roadbed before proceeding with roadbed construction. S22. Construction of bare soil roadbed: Make full use of the soil resources within the project area. Use coarse-grained soil as filler for the bare soil roadbed. The thickness of each fill layer shall not exceed 30cm and shall not be less than 20cm. The maximum loose filling thickness shall not exceed 30cm. Each layer of fill shall have an overfill width of 40-50cm on each side along the bare soil roadbed to facilitate mechanical compaction operations and ensure sufficient compaction at the edge of the completed embankment. S23. Rainwater collection system installation: Based on the requirements of the garden road, select soil that meets the design requirements for layered backfill and compaction of the plain soil roadbed. Set a recovery pipe in the middle of the roadbed according to the direction of the road. Connect the left and right sides of the recovery pipe with stainless steel pipes evenly installed along the designed route. Install sponge strips at the ends of the stainless steel pipes to guide the roots of the trees in the green areas on both sides for seepage irrigation. The sponge strips fill the ends of the stainless steel pipes to ensure rainwater seepage and outflow, playing a role in infiltration maintenance. Collection vertical pipes are evenly spaced above the main recovery pipe, with water-permeable holes evenly distributed on their outer walls. A waterproof geotextile is laid on the upper layer of the bare soil roadbed to prevent rainwater from seeping into the roadbed and damaging it. Horizontal transverse pipes and longitudinal pipes along the road are connected to the collection vertical pipes on the geotextile, and water-permeable holes are opened on their outer walls to ensure that rainwater on the road surface can pass through the collection vertical pipes, horizontal transverse pipes, and longitudinal pipes along the road and finally be collected in the main recovery pipe. S3. Installation of stainless steel formwork: Stainless steel formwork with adjustable curvature is installed on both sides of the road in the curved section of the designed route. According to the edge line of the road structure, the spacing of the straight section is 2m, and the spacing of the curved section is 1m. The fixed screws are inserted into the plain soil roadbed for fixation. The circular clamps welded on the top and bottom are used to fix it. The stainless steel formwork should be installed firmly, straight, flat and without distortion. The adjacent stainless steel formworks are fastened together by connecting plates to ensure that the steel plate joints are tight and smooth, without leakage, front and back misalignment, and height misalignment. The formwork should be able to ensure that the paving, compaction and leveling equipment does not shift when it is loaded, impacted or vibrated. The formwork extends along the extension direction of the road structure, and a garden road production mold is formed between the two rows of stainless steel formworks. S4. Laying the gravel layer and permeable concrete: Before laying, first lay a waterproof geotextile on the top of the plain soil roadbed. Horizontal collection pipes and longitudinal pipes along the line are installed on it. The horizontal collection pipes are installed on both sides of the vertical collection pipes with a certain slope. The bottom of each longitudinal pipe along the line is 2-3 cm higher than the road base. All water pipes are covered with permeable geotextile to ensure normal water permeability and rainwater collection. S41. Paving the graded gravel layer: Lay the graded gravel or sand and gravel cushion layer according to the design requirements. The thickness of the gravel layer should be strictly controlled when loading. Before construction of the gravel layer, an elevation control point should be determined on the shoulder every 4 meters to ensure that the gravel thickness does not exceed the designed thickness. After the graded gravel is laid, it should be rolled with a small roller. A small rope should be used to check the road camber and flatness. Any uneven areas should be removed and lowered until the elevation is met. A small amount of water should be sprinkled and rolling should be continued until the gravel is initially stable and there is no obvious displacement. S42. Pouring of permeable concrete layer: Permeable concrete is a dry concrete material with a fast initial setting. The transportation time of the mixture should be controlled to no more than 10 minutes according to climatic conditions. No stops should be made during transportation, and the transport machinery must move smoothly. The permeable concrete layer is poured first by pouring the bottom layer of permeable concrete, followed by pouring the surface layer of permeable concrete. The permeable concrete is then cured. The surface layer of the permeable concrete is arranged to be inclined from both sides to the middle rainwater collection vertical pipe 7 at a slope of 1.5%, which can facilitate the collection of rainwater in the rainwater collection vertical pipe; S5. Construction of colored asphalt layer: The colored asphalt layer shall be constructed after the permeable concrete base layer is constructed and maintained. Before construction, asphalt centerline dividers shall be inserted at even intervals in the middle of the road along the extension direction of the road. The asphalt centerline dividers shall be fixed on the permeable concrete pavement by fixing devices to prevent displacement and deformation of the asphalt centerline dividers during the asphalt paving operation. The asphalt centerline dividers shall be arranged according to the centerline separation direction of the two-color asphalt. The colored asphalt concrete on one side shall be paved first. After the asphalt concrete maintenance is completed, the colored asphalt road on the other side can be paved.

Images