CN217104575U

CN217104575U - Sponge type runway pavement structure for campus

Info

Publication number: CN217104575U
Application number: CN202122210253.XU
Authority: CN
Inventors: 方小山; 李雄; 张雪霏; 张颖
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-08-02
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a sponge-type track paving structure for campus. The track paving structure includes a baffle wall, a drainage groove arranged on the inner side of the baffle wall, and a pavement structure connected with the drainage groove; a first drainage port is arranged in the baffle wall to communicate with a drainage pipe network; a second drainage channel is arranged in the pavement structure The mouth is connected to the water storage facility. When encountering heavy rain, the utility model can realize rapid drainage, solve the problem that the residual rainwater on the road affects pedestrians' walking, and simultaneously filter and store part of the rainwater to supply municipal garden greening.

Description

Sponge type runway pavement structure for campus

Technical Field

The utility model belongs to the technical field of the technique of the structure of mating formation of runway and specifically relates to a sponge type runway structure of mating formation for campus is related to.

Background

The sponge city concept is proposed for the first time in 2012 low-carbon cities and regional development science and technology forum, is developed vigorously in China, and the application of the sponge city concept in campus road structure is gradually increased. In traditional campus construction, in case the rainstorm appears, because reasons such as drainage is not smooth, the campus road short time content easily forms ponding, influences road traffic, influences student's life trip even. In recent years, the slow runway gradually rises, and the environmental school runways are built in disputes of major colleges and universities, so that the application of the sponge city concept in the runway structure is gradually raised.

For example, publication No. CN 209039915U discloses a infiltration type plastic course, includes the bottom, is equipped with basic unit, flexible netted layer, active carbon adsorption layer and plastic surface layer from bottom to top in proper order above the bottom for the water that permeates through the plastic surface layer is discharged from drainage pipe or through-hole fast, avoids the plastic course to have the potential safety hazard because of ponding.

The above prior art solutions have the following drawbacks: firstly, when heavy rain falls, rainwater on the road surface needs to penetrate layer by layer, and the drainage efficiency is low, so that when the rain falls into heavy rain, the phenomenon that rainwater is accumulated on the road surface is easy to occur, and walking of people is affected. Secondly, filtered rainwater directly enters into the basic soil, and certain threat is generated to the structural stability of the road.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a sponge type runway structure of mating formation is used in campus, when meeting with the heavy rain, can realize quick drainage to improve the easy incomplete deposit of rainwater and lead to the fact the problem of influence at road surface and to the pedestrian's walking, can filter and accumulate partial rainwater simultaneously, be used for supply municipal garden afforestation.

The purpose of the utility model is realized through one of following technical scheme at least.

A sponge runway pavement structure for a campus comprises a blocking wall, a drainage channel arranged on the inner side of the blocking wall and a pavement structure connected with the drainage channel;

a first water outlet communicated with a water drainage pipe network is arranged in the baffle wall; the paving structure is internally provided with a second water outlet communicated with a water storage facility.

Further, the structure of mating formation top-down includes in proper order that the plastic layer that permeates water, flexible netted layer, delay layer, sand cushion, geotechnological cloth, rubble bed course, water-stop sheet and bed course down.

Further, the second water outlet is communicated with the water-stop sheet and the water storage facility; when raining, rainwater falling on the surface of the permeable plastic layer sequentially penetrates through the flexible mesh layer, the retention layer, the sand cushion layer, the permeable geotextile, the broken stone cushion layer and the water-stop sheet, and finally rainwater filtered by each layer enters the water storage facility through the second water outlet.

Further, the blocking wall is a square precast concrete strip stone with the length of 800-;

an opening with the length of 500 plus 700mm, the width of 100 plus 150mm and the height of 40-60mm is arranged at a position, 65-75mm away from the lower edge of the long side, of the blocking wall, facing the drainage groove, and a plurality of first drainage ports with the diameter of 50-75mm are arranged at the bottom of the opening of the blocking wall; the first drainage port is higher than the bottom of the drainage groove and lower than the top of the permeable plastic layer;

the side of the blocking wall with the opening faces the runway, and the lower edge of the blocking wall is kept flush with the upper edge of the retention layer.

Furthermore, the first drainage port is communicated with a drainage pipe network through a pipeline, and a one-way valve is arranged on the pipeline to prevent rainwater from flowing back; when heavy rain or rainfall time are longer, when the rainwater can not be accumulated in the water storage facility, the rainwater can directly enter the drainage pipe network through the first drainage port, and the phenomenon of water accumulation on the road is avoided.

Further, if the runway is used for single slope drainage, a blocking wall is arranged on one side of the pavement structure;

if the runway is double-slope drainage, retaining walls are arranged on two sides of the pavement structure, drainage grooves are formed between the retaining walls arranged on two sides and the pavement structure, and the retaining walls arranged on two sides are provided with first drainage ports, pipelines and one-way valves.

Furthermore, one side of the drainage groove is connected with the blocking wall, and the other side of the drainage groove is connected with the flexible netted layer; the bottom of the drainage groove is provided with a plurality of third drainage ports communicated with the detention layer; when rain is large, runoff generated on the surface of the runway flows to the drainage groove and enters the retention layer through the third drainage port, then the drainage groove sequentially penetrates through the flexible mesh layer, the retention layer, the sand cushion layer, the permeable geotextile, the gravel cushion layer and the water-stop sheet, and finally rainwater filtered by each layer enters the water storage facility through the second drainage port. Meanwhile, the drainage channel 2 can intercept runoff overflowing in a green land beside the runway, and rainwater and sundries are prevented from affecting the runway.

Further, for the life who guarantees the facility, the layer of detaining is concrete system grid layer, and is not only corrosion-resistant, still is favorable to providing good support for permeating water plastic layer and flexible material layer.

Furthermore, the permeable plastic layer is an EPDM rubber layer or a PU layer.

Furthermore, the thickness of the sand cushion layer is 50-150mm, the thickness of the gravel cushion layer is 150-300mm, the thickness of the water-stop plate is 40-60mm, and the lower cushion layer is C15 fine stone cast-in-place concrete with the thickness of 200-300 mm.

Compared with the prior art, the utility model has the advantages as follows:

the utility model has the advantages that: the rainwater on the surface of the plastic track can directly seep downwards through the surface layer, enter the retention layer, slowly pass through the filtering function of the filtering structure, obtain clear rainwater, and then enter the rainwater collection facility under the separation and drainage of the water-stop sheet. When the rainfall is large, the rainwater enters the drainage groove along the side slope of the runway, and enters the detention layer together with the overflow of the peripheral green land from the drainage hole at the bottom of the drainage groove, so that the water accumulation on the road surface is avoided. When the rainfall exceeds the maximum capacity that the detention layer can be detained, the rainwater water level rises to the opening parallel and level with the retaining wall of drain tank side, and the rainwater enters into the drainage pipe network rapidly through the wash port of retaining wall opening. Specifically see, the utility model has the advantages of following, first, can make the comparatively effectual collection of rainwater on runway surface collect the facility to the rainwater, when holding full back, also can avoid the appearance of surface gathered water problem through side wash port drainage. Second, the utility model discloses set up a plurality of filter layers, set up rainwater grate and filtration simultaneously in the bottom and the side of water drainage tank, ensured the cleanliness factor of rainwater, do benefit to the later stage and alleviate municipal landscape water supply pressure.

The pavement structure of the runway is sequentially provided with a plastic layer, a flexible net-shaped layer, a detention layer, a sand cushion layer, a broken stone cushion layer, a permeable geotextile layer, a water-stop sheet and a lower cushion layer from top to bottom, and the whole pavement structure is simple, convenient to construct and low in manufacturing cost.

Drawings

Fig. 1 is the schematic diagram of the sponge type runway pavement structure for campus of the utility model.

Fig. 2 is an enlarged view of the area a in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a sponge runway pavement structure for a campus is shown in figure 1 and comprises a blocking wall 1, a drainage channel 2 arranged on the inner side of the blocking wall 1 and a pavement structure connected with the drainage channel 2;

a first water outlet 11 communicated with a water drainage pipe network is arranged in the baffle wall 1; the second water outlet 12 is arranged in the paving structure and is communicated with a water storage facility.

As shown in fig. 1, the paving structure sequentially comprises a permeable plastic layer 3, a flexible net layer 4, a detention layer 5, a sand cushion layer 6, a permeable geotextile 7, a gravel cushion layer 8, a water-stop sheet 9 and a lower cushion layer 10 from top to bottom.

As shown in fig. 1, the second water discharge port 12 communicates the water stop sheet 9 and the water storage facility; when raining, the rainwater falling on the surface of the permeable plastic layer 3 sequentially penetrates through the flexible mesh layer 4, the retention layer 5, the sand cushion layer 6, the permeable geotextile 7, the broken stone cushion layer 8 and the water-stop sheet 9, and finally the rainwater filtered by each layer enters the water storage facility through the second water outlet 12.

As shown in FIG. 1, the retaining wall 1 is a square precast concrete strip stone with a length of 800-;

an opening 13 with the length of 700 mm-; the first drainage port 11 is higher than the bottom of the drainage groove 2 and lower than the top of the permeable plastic layer 3;

the side of the retaining wall 1, which is provided with an opening 13, faces the runway and the lower edge of the retaining wall 1 remains flush with the upper edge of the stagnant layer 5.

As shown in fig. 1, the first drainage port 11 is communicated with a drainage pipe network through a pipeline, and a one-way valve 111 is arranged on the pipeline to prevent rainwater from flowing back; when heavy rain or rainfall time are longer, when the rainwater can not be accumulated in the water storage facility, the rainwater can directly enter the drainage pipe network through the first drainage port 11, and the phenomenon of water accumulation on the road is avoided.

If the runway is single slope drainage, arranging a blocking wall 1 on one side of the pavement structure;

if the runway is double-slope drainage, retaining walls 1 are arranged on two sides of the pavement structure, drainage grooves 2 are arranged between the retaining walls 1 arranged on two sides and the pavement structure, and the retaining walls 1 arranged on two sides are provided with first drainage ports 11, pipelines and one-way valves 111.

As shown in fig. 2, one side of the drainage channel 2 is connected with the baffle wall 1, and the other side is connected with the flexible netted layer 4; the bottom of the drainage groove 2 is provided with a plurality of third drainage ports 21 communicated with the detention layer 5; when the rain is large, the runoff generated on the surface of the runway flows to the drainage channel 2 and enters the retention layer 5 through the third drainage port 21, then sequentially penetrates through the sand cushion layer 6, the permeable geotextile 7, the gravel cushion layer 8 and the water-stop sheet 9, and finally, the filtered rainwater on each layer enters the water storage facility through the second drainage port 12. Meanwhile, the drainage channel 2 can intercept runoff overflowing in a green land beside the runway, and rainwater and sundries are prevented from affecting the runway.

As shown in fig. 1, in order to ensure the service life of the facility, the detention layer 5 is a concrete grid layer, which is not only corrosion resistant, but also is beneficial to providing good support for the permeable plastic layer 3 and the flexible material layer 4.

In this embodiment, the permeable plastic layer 3 is an EPDM rubber layer or a PU layer.

In this embodiment, the thickness of the sand cushion layer 6 is 50mm, the thickness of the gravel cushion layer 8 is 150mm, the thickness of the water-stop sheet 9 is 50mm, and the lower cushion layer 10 is C15 fine-stone cast-in-place concrete with the thickness of 200 mm.

As shown in fig. 2, in order to further improve the drainage performance of the road, in this embodiment, the blocking wall 1, the drainage channel 2 and the permeable plastic layer 3 correspond to three rainfall conditions. When the rainfall is small, rainwater seeps downwards through the permeable plastic layer 3; when the rainfall is large, one part of rainwater permeates downwards through the permeable plastic layer 3, and the other part of rainwater rapidly enters the detention layer 5 through the third water outlet 21 of the drainage groove 2; when the rainfall is big and the rainfall time is longer, the rainwater highly rises to the height of retaining wall 1 open-ended in water drainage tank 3, and partly rainwater infiltrates through permeable plastic layer 3, and partly enters into detention layer 5 fast through the third outlet 21 of water drainage tank 2, and the part that exceeds retaining wall 1 open-ended enters into the downspout fast through first outlet 11. Thereby preventing water accumulation on the surface of the runway.

In order to prevent the backflow of rainwater in the drain pipe network during heavy rain, referring to fig. 1, a check valve 111 is provided at the first drain port 11.

The implementation principle of the embodiment is as follows: when the rainfall is small, rainwater seeps downwards through the permeable plastic layer 3; when the rainfall is large, one part of rainwater permeates downwards through the permeable plastic layer 3, and the other part of rainwater rapidly enters the detention layer 5 through the third water outlet 21 of the drainage groove 2; when the rainfall is big and the rainfall time is longer, the rainwater highly rises to 1 open-ended height of blend stop in water drainage tank 2, and partly rainwater of rainwater infiltrates through permeable plastic layer 3, and partly enters into detention layer 5 fast through the third outlet 21 of water drainage tank 2, and the ponding that exceeds 1 open-ended of blend stop is in the rainwater pipe through first outlet 11 fast. The rainwater filter is favorable for realizing quick drainage, thereby improving the problem that rainwater is easy to accumulate on the surface of a road to influence the walking of pedestrians, and simultaneously filtering and accumulating part of rainwater for supplying municipal garden greening.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A sponge runway pavement structure for a campus is characterized by comprising a blocking wall (1), a drainage channel (2) arranged on the inner side of the blocking wall (1) and a pavement structure connected with the drainage channel (2);

a first drainage port (11) communicated with a drainage pipe network is arranged in the retaining wall (1); the paving structure is internally provided with a second water outlet (12) communicated with a water storage facility.

2. The sponge type runway pavement structure for the campus of claim 1, characterized in that the pavement structure comprises a permeable plastic layer (3), a flexible net layer (4), a detention layer (5), a sand cushion layer (6), a permeable geotextile (7), a gravel cushion layer (8), a water-stop sheet (9) and a lower cushion layer (10) from top to bottom in sequence.

3. The sponge type runway pavement structure for campus of claim 2, characterized in that the second water outlet (12) is connected to the water-stop sheet (9) and the water storage facility.

4. The sponge type runway pavement structure for the campus as claimed in claim 1, wherein the retaining wall (1) is a square precast concrete slab with a length of 800-;

an opening (13) with the length of 500-700mm, the width of 100-150mm and the height of 40-60mm is arranged at a position, 65-75mm away from the lower edge of the long side, of one side, facing the drainage channel (2), of the blocking wall (1), and a plurality of first drainage ports (11) with the diameters of 50-75mm are arranged at the bottom of the opening (13) of the blocking wall (1); the position of the first drainage port (11) is higher than the bottom of the drainage groove (2) and lower than the top of the permeable plastic layer (3);

the side of the retaining wall (1) provided with the opening (13) faces the runway, and the lower edge of the retaining wall (1) is kept flush with the upper edge of the retention layer (5).

5. The sponge type runway pavement structure for the campus of claim 4, characterized in that the first drainage port (11) is communicated with a drainage pipe network through a pipeline, and the pipeline is provided with a one-way valve (111).

6. The sponge runway pavement structure for the campus of claim 5, characterized in that if the runway is a single slope drainage, a retaining wall (1) is arranged on one side of the pavement structure;

if the runway is double-slope drainage, retaining walls (1) are arranged on two sides of the pavement structure, drainage channels (2) are arranged between the retaining walls (1) arranged on the two sides and the pavement structure, and the retaining walls (1) arranged on the two sides are provided with first drainage ports (11), pipelines and one-way valves (111).

7. The sponge runway pavement structure for the campus according to claim 2, characterized in that one side of the drainage channel (2) is connected with the blocking wall (1), and the other side is connected with the flexible netted layer (4); the bottom of the drainage groove (2) is provided with a plurality of third drainage ports (21) which are communicated with the detention layer (5).

8. The sponge type runway pavement structure for the campus of claim 2, characterized in that the detention layer (5) is a concrete grid layer.

9. The sponge type runway pavement structure for the campus of claim 2, characterized in that the water permeable plastic layer (3) is an EPDM rubber layer or a PU layer.

10. The sponge type runway pavement structure for the campus of claim 2, characterized in that the sand cushion layer (6) has a thickness of 50-150mm, the gravel cushion layer (8) has a thickness of 150-300mm, the water-stop sheet (9) has a thickness of 40-60mm, and the lower cushion layer (10) is C15 fine stone cast-in-place concrete with a thickness of 200-300 mm.