A road reconstruction structure

Abstract

The utility model relates to a kind of highway reconstruction structure, the side of highway is equipped with drainage side ditch, slow lane is set on the drainage side ditch, the slow lane includes support layer and pavement layer sequentially arranged from bottom to top, the support layer is formed by the length direction of drainage side ditch by several reinforced concrete precast slab sequentially spliced, the reinforced concrete precast slab is simultaneously lapped on the two sides of drainage side ditch Gao Yan, any side or both sides of the drainage side ditch is equipped with rainwater well, and the rainwater well is spaced along the length direction of drainage side ditch, and the rainwater well pipe communicates drainage side ditch. The utility model can realize people and vehicle diversion under the premise of not changing highway width, simultaneously also does not affect drainage.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a highway reconstruction structure. Background Technology

[0002] Roadside ditches are generally used for drainage. Roads with ditches are typically located far from city centers, such as mountain roads, coastal roads, and auxiliary roads. Figure 1 The image shows a cross-sectional diagram of a mountain road with side ditches. As people's demand for fitness increases, hiking has become a popular activity, and mountain (or coastal) roads, with their relatively comfortable environments, have become the preferred destinations for walkers. However, these mountain (or coastal) roads are typically narrow, often lack dedicated pedestrian and cycling lanes, and due to the presence of drainage ditches, they are not actually suitable for walking, easily leading to congestion and posing certain safety hazards. Utility Model Content

[0003] The purpose of this utility model is to provide a highway reconstruction structure that can achieve separation of pedestrians and vehicles without changing the width of the highway, and at the same time, it does not affect drainage.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A highway reconstruction structure includes a drainage ditch on one side of the highway, with a slow-traffic lane on the drainage ditch. The slow-traffic lane includes a support layer and a pavement layer arranged sequentially from bottom to top. The support layer is formed by splicing several precast reinforced concrete slabs along the length of the drainage ditch, with the precast reinforced concrete slabs overlapping the edges of both sides of the drainage ditch. A rainwater well is provided on either side or both sides of the drainage ditch, and the rainwater wells are spaced apart along the length of the drainage ditch, with the rainwater well pipes connected to the drainage ditch.

[0005] After the above setup, by creating pedestrian and bicycle lanes along the drainage ditches beside the highway, the existing drainage ditches can serve both drainage and traffic functions, making full use of them. The pedestrian and bicycle lanes can separate pedestrians and vehicles, thereby ensuring pedestrian safety and reducing congestion. By installing storm drains connected to the drainage ditches, their effectiveness can be guaranteed. Furthermore, the pedestrian and bicycle lanes are supported by precast reinforced concrete slabs, which can be prefabricated, effectively shortening construction time during highway reconstruction.

[0006] Preferably, the drainage ditch has recessed sections along both sides, and a leveling layer is provided within each recessed section. The leveling layer is a reinforced concrete structure; the precast reinforced concrete slab overlaps the leveling layer. Because the precast reinforced concrete slab needs a certain thickness to ensure good support performance, the recessed sections prevent the pedestrian walkway from being too much higher than the highway surface, and also provide some restraint for the precast reinforced concrete slab, while facilitating the installation of the curb. The leveling layer ensures that the precast reinforced concrete slab is placed stably on the drainage ditch, thereby guaranteeing the structural stability of the pedestrian walkway.

[0007] Preferably, the system also includes curb stones on both sides of the pedestrian walkway, with the lower end of each curb stone abutting against the excavated section or leveling layer. The bottom surface of the curb stone located closer to the highway is lower than the highway surface. The curb stone located further from the highway has a concrete support on its side away from the pedestrian walkway, with the concrete support abutting against the curb stone. This arrangement ensures the stability of the curb stones, effectively limits the movement of the pedestrian walkway, maintains its structural stability, and facilitates the construction of the pedestrian walkway.

[0008] Preferably, the pedestrian walkway further includes a geogrid layer and a cement mortar layer, with the support layer, geogrid layer, cement mortar layer, and pavement layer arranged sequentially from bottom to top; the pavement layer is paved with several flamed granite slabs. By adding the geogrid layer and cement mortar layer, the structural strength of the pedestrian walkway can be better guaranteed, ensuring that the pavement layer can be reliably and stably laid.

[0009] Preferably, the pedestrian walkway is inclined towards the road side, and the angle between the pedestrian walkway and the horizontal plane is no greater than 2°. This arrangement facilitates drainage, prevents water accumulation, and makes walking easier. Furthermore, with this inclination, when the pedestrian walkway is subjected to forces (such as crustal movement forces and pedestrian trampling forces), its possible displacement direction will be more inclined towards the road, making it less likely for cracks to appear between the pedestrian walkway and the road surface.

[0010] Preferably, the pipe connecting the rainwater well to the drainage ditch has its opening at least 15cm higher than the bottom of the drainage ditch, and its height is lower than the height of the pipe connecting to the rainwater well. This arrangement makes it less likely for water in the drainage ditch to backflow into the rainwater well.

[0011] Preferably, the pedestrian walkway is provided with a number of manholes at intervals along its length, and each manhole is equipped with a manhole cover; the reinforced concrete precast slab corresponding to the location of the manhole is provided with a through hole connecting the manhole and the drainage ditch. The manholes are provided to facilitate the maintenance of the drainage ditch, such as dredging.

[0012] Preferably, the system also includes several connectors, with each pair of adjacent precast reinforced concrete slabs connected by at least two connectors. The connectors ensure that adjacent precast reinforced concrete slabs fit tightly together, resulting in greater positional stability and reducing the likelihood of cracks or other problems after long-term use of the pedestrian walkway.

[0013] Preferably, the connector is formed by bending reinforcing bars. The connector includes a connecting portion and insertion portions at both ends of the connecting portion. The extension directions of the insertion portions are parallel to each other, and the insertion portions are perpendicular to the connecting portion. The precast reinforced concrete slab has reserved holes for insertion into the insertion portions. This configuration simplifies and facilitates connector installation. Furthermore, even when the drainage ditch is not straight, the connector can still connect two adjacent precast reinforced concrete slabs by forcing the corners of the reinforcing bars to deform (e.g., by hammering). This improves adaptability to different construction environments.

[0014] Preferably, the precast reinforced concrete slab is provided with lifting lugs. This arrangement facilitates the hoisting of the precast reinforced concrete slab.

[0015] This utility model has the following beneficial effects: This utility model utilizes existing drainage ditches by creating slow-traffic lanes along highways, enabling these ditches to serve both drainage and traffic functions, thus maximizing their use. The slow-traffic lanes separate pedestrians and vehicles, ensuring pedestrian safety and reducing congestion. Connecting storm drains to the drainage ditches ensures their continued effectiveness. Furthermore, the slow-traffic lanes are supported by precast reinforced concrete slabs, which, due to their prefabrication, effectively shorten construction time during highway reconstruction.

[0016] Furthermore, this invention does not require widening the road surface, making it particularly suitable for the renovation of existing highways with drainage ditches. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an existing highway with drainage ditches.

[0018] Figure 2 This is a plan view of the present invention.

[0019] Figure 3 This is a schematic diagram of the present invention (a road section without rainwater wells).

[0020] Figure 4 This is a schematic diagram of the present invention (a section of road where a rainwater well is installed on the side of the slow lane closest to the highway).

[0021] Figure 5 This is a schematic diagram of the present invention (a section of road where a rainwater well is installed on the side of the slow lane away from the highway).

[0022] Figure 6 A schematic diagram of a precast reinforced concrete slab with through holes.

[0023] Figure 7 This is a schematic diagram showing the connection between two adjacent precast reinforced concrete slabs.

[0024] Figure 8 for Figure 7 A sectional view along line A.

[0025] Explanation of symbols for main components: 1. Highway, 2. Drainage ditch, 3. Slow lane, 4. Support layer, 5. Geogrid layer, 6. Cement mortar layer, 7. Road surface layer, 8. Reinforced concrete precast slab, 9. Excavated section, 10. Concrete capping, 11. Leveling layer, 12. Curbstone, 13. Connector, 14. Connecting part, 15. Insertion part, 16. Reserved hole, 17. Inspection well, 18. Through hole, 19. Rainwater well, 20. Pipeline, 21. Mountain. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 2-8 As shown, this utility model discloses a highway reconstruction structure. Taking a mountain road 1 as an example, a drainage ditch 2 is provided on the side of the road 1 closest to the mountain 21. A slow lane 3 is provided on the drainage ditch 2. The slow lane 3 includes a support layer 4, a geogrid layer 5, a cement mortar layer 6 and a pavement layer 7 arranged sequentially from bottom to top. The geogrid layer 5 helps to improve the overall strength, and the cement mortar layer 6 helps to level the surface, thus facilitating the laying of the pavement layer 7. In this case, the pavement layer 7 is paved with several flamed granite slabs.

[0028] The supporting layer 4 is formed by sequentially splicing several precast reinforced concrete slabs 8 along the length of the drainage ditch 2, with the precast reinforced concrete slabs 8 overlapping the sides of the drainage ditch 2. Specifically, to prevent the precast reinforced concrete slabs 8 from being installed unevenly and to prevent the road surface elevation of the slow lane 3 from exceeding the required height, hollow sections 9 are provided on both sides of the drainage ditch 2. The hollow sections 9 can be obtained by removing the original concrete capping 10 on the drainage ditch 2. If the depth of the hollow section 9 is insufficient, part of the ditch body can be removed further down. A leveling layer 11 is provided in the hollow section 9. This leveling layer 11 is a reinforced concrete structure to ensure strength. The precast reinforced concrete slabs 8 overlap on the leveling layer 11.

[0029] In this case, it is required that the slow lane 3 be inclined towards the side of the highway 1, and the angle T between the slow lane 3 and the horizontal plane should not exceed 2°. This arrangement is conducive to drainage of the slow lane 3, avoids water accumulation, and facilitates walking. In addition, with this inclination, when the slow lane 3 is subjected to forces (such as crustal movement forces and pedestrian trampling forces), its possible displacement direction will be more inclined to be closer to the direction of the highway 1, and cracks will be less likely to appear between the slow lane 3 and the road surface of the highway 1.

[0030] To ensure that the slow lane 3 does not crumble or shift, especially to prevent the displacement of clean precast concrete slabs, curb stones 12 are installed on both sides of the slow lane 3. The lower end of the curb stone 12 abuts against the excavated part 9 or the leveling layer 11. In this case, because the slow lane 3 is inclined towards the road 1, the curb stone 12 on the side closer to the road 1 abuts against the excavated part 9, while the curb stone 12 on the side closer to the mountain 21 abuts against the leveling layer 11. In addition, the bottom surface of the curb stone 12 located closer to the road 1 is set lower than the plane of the road 1 to ensure that the curb stone 12 is installed stably. The curb stone 12 located away from the road 1 (i.e., the curb stone 12 on the side closer to the mountain 21) is reinforced with concrete support on the side away from the slow lane 3. The concrete support abuts against the curb stone 12 to prevent it from tipping over or easily shifting. The two ends of the precast reinforced concrete slab 8 abut against the two curb stones 12 respectively, thereby preventing the precast reinforced concrete slab 8 from shifting.

[0031] After the above setup, the precast reinforced concrete slab 8 is not easily moved in its length direction, while its width direction (i.e., the length direction of the drainage ditch 2 or the slow-moving lane 3) is restricted by the connectors 13. Specifically, adjacent precast reinforced concrete slabs 8 should be connected by at least two connectors 13. The connectors 13 are formed by bending steel bars and include a connecting part 14 and insertion parts 15 located at both ends of the connecting part 14. The extension directions of the insertion parts 15 are parallel to each other, and the insertion parts 15 are perpendicular to the connecting parts 14. Reserved holes 16 for insertion and mating with the insertion parts 15 are provided on both sides of the precast reinforced concrete slab 8 in the width direction. After two adjacent precast reinforced concrete slabs 8 are hoisted into place, they are connected by connectors 13. When there are road bends or changes in slope, the connection can be maintained by tapping the reinforcing bars with a hammer to ensure localized deformation. Since the precast reinforced concrete slabs 8 are supported by the drainage ditch 2, the connectors 13 maintain their connection to the precast reinforced concrete slabs 8 after the geogrid layer 5 is laid. Additionally, lifting lugs are installed on the precast reinforced concrete slabs 8 to facilitate hoisting.

[0032] Because the drainage ditch 2 is obstructed by the pedestrian walkway 3, several inspection wells 17 are spaced along the length of the pedestrian walkway 3 to facilitate the inspection and maintenance of the drainage ditch 2. Each inspection well 17 is equipped with a manhole cover. A through hole 18 connecting the inspection well 17 and the drainage ditch 2 is provided on the precast reinforced concrete slab 8 at the corresponding position of the inspection well 17.

[0033] Rainwater wells 19 are installed on either side or both sides of the drainage ditch 2, and are spaced apart along the length of the drainage ditch 2. The location and spacing of the rainwater wells 19 can be adjusted according to terrain, drainage volume, and ease of installation. Each rainwater well 19 has a water-permeable cover at its opening, and is connected to the drainage ditch 2 via a pipe 20. Furthermore, to prevent backflow of water from the drainage ditch 2 into the rainwater wells 19, the height of the pipe opening connecting the drainage ditch 2 to the rainwater well 19 must be lower than the height of the pipe opening connecting the pipe 20 to the rainwater well 19, and the pipe opening connecting the pipe 20 to the drainage ditch 2 must be higher than the bottom of the drainage ditch 2, with a distance L ≥ 15 cm between them.

[0034] When renovating the existing highway 1, the concrete capping 10 on the existing drainage ditch 2 can be removed first, followed by the laying of the leveling layer 11, then the installation of the curbstone 12, and the laying of the concrete supports. After the curbstone 12 is installed, the precast reinforced concrete slabs 8 are hoisted and connected, followed by the sequential laying of the geogrid layer 5, cement mortar layer 6, and pavement layer 7. It is best to install the storm drain 19 before the slow lane 3 to avoid interference.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A highway reconstruction structure, wherein a drainage ditch is provided on one side of the highway, characterized in that: A pedestrian walkway is provided on the drainage ditch. The pedestrian walkway includes a support layer and a pavement layer arranged sequentially from bottom to top. The support layer is formed by splicing several precast reinforced concrete slabs along the length of the drainage ditch. The precast reinforced concrete slabs are also overlapped on the two sides of the drainage ditch. A rainwater well is provided on one or both sides of the drainage ditch, and the rainwater wells are spaced apart along the length of the drainage ditch. The rainwater well pipes are connected to the drainage ditch.

2. The highway reconstruction structure according to claim 1, characterized in that: The drainage ditch has hollowed-out sections along both sides, and a leveling layer is provided in the hollowed-out sections. The leveling layer is a reinforced concrete structure. The precast reinforced concrete slab overlaps on the leveling layer.

3. The highway reconstruction structure according to claim 2, characterized in that: It also includes curb stones set on both sides of the slow lane, the lower end of the curb stone abutting the excavated part or leveling layer; the bottom surface of the curb stone set close to the highway is set lower than the highway plane; the curb stone set away from the highway has a concrete support on the side away from the slow lane, and the concrete support abuts the curb stone.

4. The highway reconstruction structure according to claim 1, characterized in that: The slow-moving lane also includes a geogrid layer and a cement mortar layer, and the support layer, geogrid layer, cement mortar layer and pavement layer are arranged sequentially from bottom to top; the pavement layer is paved with several flamed granite slabs.

5. The highway reconstruction structure according to claim 1, characterized in that: The slow lane is inclined to one side of the road, and the angle between the slow lane and the horizontal plane is no greater than 2°.

6. The highway reconstruction structure according to claim 1, characterized in that: The pipe connecting the rainwater well to the drainage ditch has its opening at least 15cm higher than the bottom of the drainage ditch, and its height is lower than the height of the pipe connecting the rainwater well.

7. The highway reconstruction structure according to claim 1, characterized in that: The slow-moving lane is provided with a number of maintenance wells at intervals along its length, and each maintenance well is provided with a manhole cover; the reinforced concrete precast slab corresponding to the location of the maintenance well is provided with a through hole connecting the maintenance well and the drainage ditch.

8. The highway reconstruction structure according to claim 1, characterized in that: It also includes several connectors, with each pair of adjacent precast reinforced concrete slabs connected by at least two connectors.

9. The highway reconstruction structure according to claim 8, characterized in that: The connector is formed by bending steel bars. The connector includes a connecting part and plug-in parts located at both ends of the connecting part. The extension directions of the plug-in parts are parallel to each other, and the plug-in parts are perpendicular to the connecting part. The precast reinforced concrete slab is provided with reserved holes for plugging into the plug-in parts.

10. The highway reconstruction structure according to claim 1, characterized in that: The precast reinforced concrete slab is equipped with lifting lugs.

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