Transverse drainage structure for road surface

Abstract

The utility model discloses a transverse drainage structure of a road surface, which is arranged on a middle road surface of a second traffic lane close to a roadside ditch, and specifically comprises a permeable asphalt concrete surface layer, a sand-free permeable concrete base layer, a filter layer and a blind ditch which are longitudinally distributed along the road surface and are sequentially arranged from top to bottom, the blind ditch comprises a groove body with an upward opening and a cover plate covering the opening of the groove body, a plurality of water permeable openings are formed in the cover plate in a penetrating mode, and the filtering layer is located between the sand-free water permeable concrete base layer and the cover plate. According to the utility model, accumulated water on the road surface can quickly and downwards permeate into the blind ditch to be discharged in the process of flowing to the side ditch along the cross slope, so that the drainage speed of the road surface is accelerated and the accumulated water on the road surface is reduced; meanwhile, after the rainwater permeating into the blind ditch is subjected to multi-layer filtration, the water quality is greatly improved, the rainwater can be used as greening water, and the water resource utilization rate is increased. In addition, the blind ditch can be of a prefabricated structure, the construction efficiency is improved, and by arranging the cover plate, good supporting force is provided, and the blind ditch is prevented from being crushed by vehicles.

Description

Technical Field

[0001] The utility model relates to the technical field of road drainage, in particular to a road surface transverse drainage structure. Background Art

[0002] At present, municipal roads with more than three lanes on one side generally have cross slopes on the road surface and side ditches on the roadside to speed up the drainage of road surface water. However, in actual use, the side ditches are often blocked by various debris, resulting in the inability to quickly drain water when it rains heavily. Especially in the case of high-intensity rainstorms, the drainage capacity of the side ditches is often insufficient, causing serious water accumulation on the road surface, affecting traffic safety and reducing traffic efficiency.

[0003] Therefore, it is necessary to improve the insufficient drainage capacity of the existing pavement structure. Utility Model Content

[0004] The purpose of the utility model is to provide a transverse drainage structure for a road surface, which can allow the accumulated water on the road surface to flow along the transverse slope to the side ditch on rainy days and then seep into the hidden ditch for discharge, thereby accelerating the drainage speed of the road surface and reducing accumulated water on the road surface. Moreover, after the rainwater that seeps into the hidden ditch passes through the combined filtering effect of the permeable asphalt concrete surface layer, the sandless permeable concrete base layer and the filter layer, the water quality can be used for greening, thereby improving the utilization rate of water resources and well solving the problems mentioned in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pavement transverse drainage structure is arranged in the middle of the second lane of the roadside ditch. The pavement transverse drainage structure includes a permeable asphalt concrete surface layer, a sandless permeable concrete base layer, a filter layer and a culvert which are distributed longitudinally along the pavement and arranged in sequence from top to bottom. The culvert includes a trough body with an opening facing upward and a cover plate covering the opening of the trough body. The cover plate is penetrated by a plurality of water permeable openings. The filter layer is located between the sandless permeable concrete base layer and the cover plate.

[0007] Furthermore, a plurality of support frames are provided inside the dark ditch, the lower part of the support frame abuts against the inner bottom surface of the trough body, and the upper part of the support frame abuts against the cover plate. The support frames can support the cover plate, thereby improving the overall force stability.

[0008] Furthermore, the support frame includes a steel plate, a rubber block bonded to the upper surface of the steel plate, and a diagonal brace obliquely welded to the lower surface of the steel plate and distributed in an inverted "V" shape.

[0009] Furthermore, the trough body is formed by splicing a plurality of prefabricated concrete drainage ditches. The use of prefabricated structures can speed up construction convenience and improve construction efficiency.

[0010] Furthermore, the width of the precast concrete drainage ditch is 30 to 80 cm, and the height of the precast concrete drainage ditch is 50 cm.

[0011] Furthermore, the filter layer is selected to have a specification of 500-800 g / m 2 Permeable geotextile.

[0012] Furthermore, the width of the permeable asphalt concrete surface layer and the sand-free permeable concrete base layer are both 0.8 to 1.2 m. Since the wheel track of the lane is generally located within the range of 0.6 to 1.4 m from the center line of the lane, that is, the net width between the two wheel tracks of the same lane is 1.2 m, which corresponds to the maximum width that can be set for the permeable asphalt concrete surface layer and the sand-free permeable concrete base layer.

[0013] Furthermore, the thickness of the permeable asphalt concrete surface layer is 4 to 10 cm, and the thickness of the sandless permeable concrete base layer is 8 to 22 cm.

[0014] Furthermore, both sides of the permeable asphalt concrete surface layer, both sides and part of the lower surface of the sandless permeable concrete base layer, and the outer surface of the culvert are provided with a waterproof layer with a thickness of 1 to 2 mm. In this way, rainwater can be prevented from eroding the road surface outward through both sides during the process of infiltrating into the culvert.

[0015] Further, the drainage outlet of the culvert is connected with a water collecting device. As an example, the water collecting device can be a water collecting tank or a water collecting pool, so that the discharged water can be reused, such as for watering vegetation.

[0016] Compared with the prior art, the utility model provides a road lateral drainage structure, which has the following beneficial effects:

[0017] When it rains heavily, the utility model can make the road surface water quickly seep into the culvert and discharge in the process of flowing along the horizontal slope to the side ditch, which speeds up the drainage speed of the road surface and reduces the road surface water; at the same time, the rainwater that seeps into the culvert has greatly improved the water quality after passing through the multi-layer filtration effect of the permeable asphalt concrete surface layer, the sandless permeable concrete base layer and the filter layer, and can be used for greening water, thereby improving the utilization rate of water resources. In addition, the culvert can adopt a prefabricated structure to improve the construction efficiency, and by setting a cover plate, it provides a better support force, which can support the permeable asphalt concrete surface layer and the sandless permeable concrete base layer above it to avoid being crushed by vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic diagram of the distribution of the utility model on the road surface;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the splicing of the dark ditch;

[0022] Figure 4 A schematic diagram of the structure of the support frame.

[0023] Figure numerals: 100, lateral drainage structure of pavement; 1, permeable asphalt concrete surface layer; 2, sandless permeable concrete base layer; 3, filter layer; 4, culvert; 41, trough body; 42, cover plate; 421, water permeable port; 43, support frame; 431, steel plate; 432, rubber block; 433, diagonal brace; 5, road base layer; 6, waterproof layer; 200, side ditch; 300, driving lane; 301, driving lane wheel track strip; 302, driving lane center line. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Please refer to Figure 1 to Figure 4This embodiment provides a road transverse drainage structure 100, which is arranged at the middle road surface of the second driving lane 300 near the roadside ditch 200. The road transverse drainage structure 100 includes a permeable asphalt concrete surface layer 1, a sand-free permeable concrete base layer 2, a filter layer 3 and a culvert 4, which are distributed longitudinally along the road surface and arranged in sequence from top to bottom. The culvert 4 includes a trough body 41 with an opening facing upward and a cover plate 42 covering the opening of the trough body 41. The cover plate 42 is penetrated with a plurality of water permeable openings 421. The filter layer 3 is located between the sand-free permeable concrete base layer 2 and the cover plate 42. In this way, when it rains heavily, the accumulated water on the road surface can quickly infiltrate into the culvert and discharge in the process of flowing along the horizontal slope to the ditch, which speeds up the drainage speed of the road surface and reduces the accumulated water on the road surface; at the same time, the rainwater infiltrating into the culvert greatly improves the water quality after passing through the common filtering effect of the permeable asphalt concrete surface layer, the sand-free permeable concrete base layer and the filter layer, and can be used as greening water, thereby improving the utilization rate of water resources. In addition, the culvert can adopt prefabricated structure to improve construction efficiency, and by setting up a cover plate, it can provide better supporting force, which can support the permeable asphalt concrete surface layer and sandless permeable concrete base layer above it to avoid being crushed by vehicles.

[0026] In some embodiments, reference Figure 2 to Figure 4 A plurality of support frames 43 are provided inside the dark ditch 4, the lower portion of the support frame 43 abuts against the inner bottom surface of the trough body 41, and the upper portion of the support frame 43 abuts against the cover plate 42. The support frames provided can support the cover plate, thereby improving the overall force stability.

[0027] Preferably, the support frames 43 are distributed at intervals along the dark ditch 4. The distance between two adjacent support frames 43 is 50 cm.

[0028] In some specific embodiments, reference Figure 4 The support frame 43 includes a steel plate 431, a rubber block 432 bonded to the upper surface of the steel plate 431, and a diagonal brace 433 obliquely welded to the lower surface of the steel plate 431 in an inverted "V" shape. Specifically, as an example, the specifications of the steel plate are 100mm*50mm*10mm, and the specifications of the rubber block are 80mm*50mm*20mm; the diagonal brace is formed by cutting a stainless steel square tube, with a specification of 40mm*40mm*4mm, and the angle between the diagonal braces is 30 to 45 degrees, which can be adjusted according to the height of the culvert.

[0029] In some embodiments, reference Figure 3 The trough body 41 is formed by splicing a plurality of prefabricated concrete drainage ditches. The use of prefabricated structures can speed up construction convenience and improve construction efficiency.

[0030] In some specific implementations, positioning stands for positioning the support cover plate 42 are provided on both sides of the opening of the precast concrete drain ditch.

[0031] In some specific implementations, the width of the precast concrete drain ditch is 30-80 cm, and the height of the precast concrete drain ditch is 50 cm. Specifically, as an example, the width of the precast concrete drain ditch is set to 50 cm.

[0032] In some embodiments, the filter layer 3 has a specification of 500-800 g / m 2 Permeable geotextile.

[0033] In some specific embodiments, the width of the permeable asphalt concrete surface layer 1 and the sandless permeable concrete base layer 2 are both 0.8 to 1.2 m. Since the wheel track of the lane is generally located within the range of 0.6 to 1.4 m from the center line of the lane, that is, the net width between the two wheel tracks of the same lane is 1.2 m, corresponding to the maximum width that can be set for the permeable asphalt concrete surface layer and the sandless permeable concrete base layer. Specifically, as an example, the width of the permeable asphalt concrete surface layer and the sandless permeable concrete base layer are both set to 1 m.

[0034] In some specific embodiments, the thickness of the permeable asphalt concrete surface layer 1 is 4 to 10 cm, and the thickness of the sandless permeable concrete base layer 2 is 8 to 22 cm. Specifically, as an example, the thickness of the permeable asphalt concrete surface layer is set to 6 cm, and the thickness of the sandless permeable concrete base layer is set to 10 cm.

[0035] In some embodiments, reference Figure 2 The two side surfaces of the permeable asphalt concrete surface layer 1, the two side surfaces and part of the lower surface of the sandless permeable concrete base layer 2, and the outer surface of the culvert 4 are all provided with a waterproof layer 6 with a thickness of 1 to 2 mm. In this way, it can be prevented that rainwater infiltrates into the culvert and erodes the road surface outward through both sides.

[0036] In some embodiments, a water collection device is connected to the drain outlet of the culvert 4. As an example, the water collection device can be a water collection tank or a water collection pool, so that the discharged water can be reused, such as for watering vegetation.

[0037] It should be noted that the permeable asphalt concrete used in the permeable asphalt concrete surface layer 1 and the sandless permeable concrete used in the sandless permeable concrete base layer 2 are both conventional materials in the art.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A road lateral drainage structure, arranged in the middle of the second lane of the road near the roadside ditch, characterized in that: The transverse drainage structure of the road surface includes a permeable asphalt concrete surface layer, a sandless permeable concrete base layer, a filter layer and a culvert distributed longitudinally along the road surface and arranged in sequence from top to bottom. The culvert includes a trough body with an opening facing upward and a cover plate covering the opening of the trough body. The cover plate is penetrated by a plurality of water permeable openings. The filter layer is located between the sandless permeable concrete base layer and the cover plate.

2. The pavement transverse drainage structure according to claim 1, characterized in that: A plurality of support frames are arranged inside the dark ditch, the lower portion of the support frames abuts against the inner bottom surface of the trough body, and the upper portion of the support frames abuts against the cover plate.

3. The pavement transverse drainage structure according to claim 2, characterized in that: The support frame includes a steel plate, a rubber block bonded to the upper surface of the steel plate, and a diagonal brace obliquely welded to the lower surface of the steel plate and distributed in an inverted "V" shape.

4. The pavement transverse drainage structure according to claim 1, characterized in that: The trough body is formed by splicing a plurality of prefabricated concrete drainage ditches.

5. The pavement transverse drainage structure according to claim 4, characterized in that: The width of the precast concrete drainage ditch is 30-80 cm, and the height of the precast concrete drainage ditch is 50 cm.

6. The pavement transverse drainage structure according to claim 1, characterized in that: The filter layer is selected to have a specification of 500-800 g / m 2 Permeable geotextile.

7. The pavement transverse drainage structure according to claim 1, characterized in that: The widths of the permeable asphalt concrete surface layer and the sandless permeable concrete base layer are both 0.8 to 1.2 m.

8. The pavement transverse drainage structure according to claim 1, characterized in that: The thickness of the permeable asphalt concrete surface layer is 4 to 10 cm, and the thickness of the sandless permeable concrete base layer is 8 to 22 cm.

9. The pavement transverse drainage structure according to claim 1, characterized in that: The two side surfaces of the permeable asphalt concrete surface layer, the two side surfaces and part of the lower surface of the sandless permeable concrete base layer, and the outer surface of the culvert are all provided with a waterproof layer with a thickness of 1 to 2 mm.

10. The road surface transverse drainage structure according to any one of claims 1 to 9, characterized in that: The drainage outlet of the culvert is connected with a water collecting device.

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