Sponge city bridge middle zoning planting structure with water storage function

Abstract

The utility model relates to a sponge city bridge mid-division zone planting structure with a water storage function, which comprises a planting soil layer, a first geotechnical cloth layer, a coarse sand layer and a ceramsite layer which are sequentially paved in a mid-division zone from top to bottom, and further comprises a second geotechnical cloth layer, a grating frame, a plurality of water cotton ropes, an overflow pipe and an overflow pipe grate, the grid frame is arranged at the bottom of the bridge median strip, the ceramsite layer is filled in the grid frame, the second geotechnical cloth layer is arranged between the planting soil layer and the inner side wall of the bridge median strip and between the coarse sand layer and the upper end of the grid frame, and the water cotton rope is arranged in the ceramsite layer in the grid frame below the second geotechnical cloth layer. The overflow pipe is pre-buried in a side wall retaining wall of the bridge mid-division zone, and the overflow pipe grate is arranged at one end, located on the inner wall of the mid-division zone, of the overflow pipe in a communicating manner. By additionally arranging the geotechnical cloth, the water cotton rope and the grating frame, the problems of planting soil layer loss and damage of plant root systems to a bridge waterproof layer can be solved, manual irrigation and natural rainwater can be stored, the plant planting environment is improved, and the ecological benefits of sponge are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal supporting facilities, and in particular to a sponge city bridge central strip planting structure with a water storage function. Background Art

[0002] With the development of the city, in order to increase the ecological landscape effect on the viaduct and reduce the driver's driving fatigue, the central dividing strip on the bridge is currently set up to plant hedges. The planting structure is based on the conventional flower bed planting method. The soil depth is generally more than 80cm, which is more than 35cm higher than the conventional planting of green land. The plant roots are easy to penetrate deep, which is easy to damage the bridge waterproof structure layer in the later stage, increasing the safety hazard of the bridge. At the same time, the current use of automatic sprinkler irrigation or sprinkler truck irrigation on the viaduct has the following problems: 1. The planting soil layer is easy to lose; 2. The irrigation water and natural rainwater cannot be stored and utilized. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a sponge city bridge center strip planting structure with a water storage function in view of the deficiencies of the above-mentioned prior art. The sponge city bridge center strip planting structure with a water storage function can not only solve the loss of planting soil layer and the damage of plant roots to the bridge waterproof layer, but also can store artificial irrigation and natural rainwater, improve the plant planting environment, and enhance the benefits of sponge cities.

[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: a sponge city bridge center strip planting structure with a water storage function, comprising a planting soil layer, a first geotextile layer, a coarse sand layer and a ceramsite layer sequentially laid in the bridge center strip from top to bottom, and also comprising a second geotextile layer, a grid frame, a plurality of water cotton ropes, an overflow pipe and an overflow pipe grate, the grid frame being arranged at the bottom of the bridge center strip, and the ceramsite layer being filled in the grid frame, the second geotextile layer being arranged between the planting soil layer and the inner wall of the bridge center strip and between the coarse sand layer and the upper end of the grid frame, the water cotton rope being arranged in the ceramsite layer in the grid frame below the second geotextile layer, the overflow pipe being obliquely embedded in the side wall retaining wall of the bridge center strip in a through-type manner, and the overflow pipe grate being connected and arranged at one end of the overflow pipe located on the inner wall of the side wall retaining wall of the bridge center strip.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows:

[0006] Further: the planting soil layer is garden soil or light soil, and the planting thickness is 450-500mm.

[0007] Further: the material of the coarse sand layer is sand and gravel with an average particle size of 0.25-0.35 mm, wherein the mass of sand and gravel with a particle size greater than 0.3 mm exceeds 60% of the total weight.

[0008] Further: The specifications of the first geotextile layer and the second geotextile layer are both 200-300g / m 2

[0009] Further: the grille frame is made of PVC material and is a rectangular frame-shaped grid structure, and the size of the frame grid is 600*400*400mm.

[0010] Further: the thickness of the ceramsite layer is 300-500 mm, and the particle size is 25-30 mm.

[0011] Further: the water cotton rope is a core-spun water-absorbing cotton rope with a diameter of 6-10mm.

[0012] Further: the overflow pipe is made of PVC material, and the diameter of the overflow pipe is 40-60mm.

[0013] Further: the overflow pipe grate is made of PVC material, and the grate diameter is 60-100mm.

[0014] Compared with the existing urban bridge center strip planting structure, the utility model of the sponge urban bridge center strip planting structure with water storage function can not only solve the loss of planting soil layer and the damage of plant roots to the bridge waterproof layer by adding geotextile, water cotton rope and grid frame, but also can store artificial irrigation and natural rainwater, improve the plant planting environment and increase the sponge ecological benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a sponge city bridge central planting structure with a water storage function according to an embodiment of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Planting soil layer, 2. First geotextile layer, 3. Coarse sand layer, 4. Second geotextile layer, 5. Grid frame, 6. Expanded clay layer, 7. Water cotton rope, 8. Overflow pipe, 9. Overflow grate. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figure 1As shown, a sponge city bridge center strip planting structure with water storage function includes a planting soil layer 1, a first geotextile layer 2, a coarse sand layer 3 and a ceramsite layer 6 laid in the bridge center strip from top to bottom, and also includes a second geotextile layer 4, a grid frame 5, a plurality of water cotton ropes 7, an overflow pipe 8 and an overflow pipe grate 9, the grid frame 5 is arranged at the bottom of the bridge center strip, and the ceramsite layer 6 is filled in the grid frame 5, and the second geotextile layer 4 is arranged between the planting soil layer 1 and the bridge center strip The water cotton rope 7 is arranged in the expanded clay layer 6 in the grid frame 5 below the second geotextile layer 4, and the overflow pipe 8 is pre-buried in the side wall retaining wall of the middle dividing zone of the bridge in an inclined manner, with the lower end extending into the outer wall of the road and the higher end extending into the inner wall of the middle dividing zone, and the height is less than 3 cm below the upper end of the grid frame 5. The overflow pipe grate 9 is connected to one end of the overflow pipe 8 located on the inner wall of the side wall retaining wall of the middle dividing zone of the bridge.

[0020] In one or more embodiments of the present invention, the planting soil layer 1 is garden soil or light soil, and the planting thickness is 450-500mm.

[0021] In one or more embodiments of the present invention, the material of the coarse sand layer 3 is sand and gravel with an average particle size of 0.25-0.35 mm, wherein the mass of sand and gravel with a particle size greater than 0.3 mm exceeds 60% of the total weight.

[0022] In one or more embodiments of the present invention, the specifications of the first geotextile layer 2 and the second geotextile layer 4 are both 200-300g / m 2

[0023] In one or more embodiments of the present invention, the grille frame 5 is made of PVC material and is a rectangular frame-shaped grid structure, and the size of the frame grid is 600*400*400mm.

[0024] In one or more embodiments of the present invention, the thickness of the ceramsite layer 6 is 300-500 mm, and the particle size is 25-30 mm.

[0025] In one or more embodiments of the present invention, the water cotton rope 7 is a core-skinned water-absorbing cotton rope with a diameter of 8 mm.

[0026] In one or more embodiments of the present invention, the overflow pipe 8 is made of PVC material, and the diameter of the overflow pipe 8 is 50 mm.

[0027] In one or more embodiments of the present invention, the overflow pipe grate 9 is made of PVC material, and the grate diameter is 80 mm.

[0028] The laying process of the central dividing strip planting structure of the sponge city bridge with water permeability and water storage functions of the utility model is as follows: first, a 50mm PVC overflow pipe 8 is pre-buried during the construction of the central dividing strip retaining wall of the bridge, and a PVC overflow grate 9 with a diameter of 80mm is installed at the same time, the interior of the central dividing strip is waterproofed, the grille frame 5 is placed inside the retaining wall flower bed, and the water cotton rope 7 is successively extended into the grille frame 5 to the bottom of the central dividing strip flower bed, and expanded clay is evenly filled into the grille frame 5 to form an expanded clay layer 6 with a thickness of 400mm, a layer of the second geotextile 4 is laid on the top of the grille frame 5 to form a U shape, and then a 100mm thick coarse sand layer 2 is laid, and a layer of the first geotextile 2 is laid on the top of the coarse sand layer to form a U shape, and finally a 450-500 thick planting soil layer 1 is laid.

[0029] When it rains or waters, rainwater infiltrates through the planting soil layer 1 in turn, the first geotextile 2 prevents the loss of planting soil and blocks the coarse sand layer, the rainwater is filtered through the coarse sand layer 3 and quickly infiltrates into the second geotextile 4, the second geotextile 4 filters the rainwater to prevent the sand and gravel in the coarse sand layer 3 from entering the grid frame 5 and the ceramsite layer 6, and prevents the loss of the coarse sand layer 3, the rainwater infiltrates into the ceramsite layer 6 in the grid frame 5 after passing through the second geotextile 4, and is stored in the ceramsite layer 6 in the grid frame 5, and when the ceramsite layer 6 is full, the excess rainwater is discharged into the roadway through the overflow grate 8 and the overflow pipe 7. When it is not raining, the rainwater stored in the ceramsite layer 6 is sucked into the bottom of the coarse sand layer through the water cotton rope 7, meeting the water requirements of the plant roots, and can be combined with the irrigation system as a supplementary water source for irrigation.

[0030] 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.

Claims

1. A sponge city bridge central strip planting structure with water storage function, comprising a planting soil layer (1), a first geotextile layer (2), a coarse sand layer (3) and a ceramsite layer (6) sequentially laid in the central strip of the bridge from top to bottom, characterized in that: The invention also comprises a second geotextile layer (4), a grid frame (5), a plurality of water cotton ropes (7), an overflow pipe (8) and an overflow pipe grate (9); the grid frame (5) is arranged at the bottom of the bridge middle zone, and the ceramsite layer (6) is filled in the grid frame (5); the second geotextile layer (4) is arranged between the planting soil layer (1) and the inner wall of the bridge middle zone and between the coarse sand layer (3) and the upper end of the grid frame (5); the water cotton ropes (7) are arranged in the ceramsite layer (6) in the grid frame (5) below the second geotextile layer (4); the overflow pipe (8) is pre-buried in a through-type inclined manner in the side wall retaining wall of the bridge middle zone; and the overflow pipe grate (9) is arranged in communication with one end of the overflow pipe (8) located on the inner wall of the side wall retaining wall of the bridge middle zone.

2. The sponge city bridge central strip planting structure with water storage function according to claim 1 is characterized by: The planting soil layer (1) is garden soil or light soil, and the planting thickness is 450-500 mm.

3. The sponge city bridge strip planting structure with water storage function according to claim 1 is characterized by: The material of the coarse sand layer (3) is sand and gravel with an average particle size of 0.25-0.35 mm, wherein the mass of sand and gravel with a particle size greater than 0.3 mm exceeds 60% of the total weight.

4. The sponge city bridge strip planting structure with water storage function according to claim 1 is characterized by: The specifications of the first geotextile layer (2) and the second geotextile layer (4) are both 200-300 g / m 2 .

5. The sponge city bridge strip planting structure with water storage function according to claim 1 is characterized by: The grille frame (5) is made of PVC material and is a rectangular frame-shaped grid structure, and the size of the frame-shaped grid is 600*400*400mm.

6. The sponge city bridge central strip planting structure with water storage function according to claim 1 is characterized by: The ceramsite layer (6) has a thickness of 300-500 mm and a particle size of 25-30 mm.

7. The sponge city bridge central strip planting structure with water storage function according to claim 1 is characterized by: The water cotton rope (7) is a core-skinned water-absorbing cotton rope with a diameter of 6-10 mm.

8. The sponge city bridge strip planting structure with water storage function according to claim 1 is characterized by: The overflow pipe (8) is made of PVC material, and the diameter of the overflow pipe (8) is 40-60 mm.

9. The sponge city bridge strip planting structure with water storage function according to any one of claims 1 to 8, characterized in that: The overflow pipe grate (9) is made of PVC material, and the grate diameter is 60-100 mm.

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