CN213740396U

CN213740396U - Natural permeable quarrying paving structure for sponge city

Info

Publication number: CN213740396U
Application number: CN202022591585.2U
Authority: CN
Inventors: 卢沼恒
Original assignee: Shenzhen Xiangtai Construction Engineering Co ltd
Current assignee: Shenzhen Xiangtai Construction Engineering Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-07-20
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to a sponge city road surface pavement's technical field, concretely relates to natural stone quarrying structure of mating formation that permeates water in sponge city, include the bed course that permeates water, the basic unit that permeates water and the surface course that permeates water of laying in proper order from bottom to top at the road base layer, still include vertically to be provided with the drainage channel on road both sides respectively along the road, the basic unit that permeates water is provided with the aqua storage tank, and the aqua storage tank is provided with the gap, gap and drainage channel intercommunication. The water storage tank is arranged on the permeable base layer, so that the downward-permeating rainwater can be stored in rainy days; in sunny days, water in the water storage tank is evaporated into water vapor, the water vapor moves upwards to the ground for the evaporation of the road surface, the utilization degree of rainwater is increased, and the urban heat island effect is relieved.

Description

Natural permeable quarrying paving structure for sponge city

Technical Field

The application relates to the technical field of sponge city road surface pavement, in particular to a natural permeable quarrying pavement structure for a sponge city.

Background

The urban area is increasingly huge in development, so that population is dense, waterproof building area is increased, and heat removal machines are increased, so that the probability of natural rainfall penetrating into ground soil is relatively reduced, the heat balance of the city is damaged, pavement heat cannot be released, and the urban heat island effect phenomenon is more and more serious. In recent years, in order to balance city construction and nature, make cities enter benign development tracks and solve the contradiction between waterlogging and drought, the sponge city concept (also called low impact development, LID) is proposed as a new city construction direction.

The sponge city is ecological rain flood management for cities and regions, and is a city with good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and can be also called as a water elasticity city. When raining, the utility model absorbs water, stores water, seeps water and purifies water, and when needed, the stored water is released and utilized. Rainwater is a valuable and economical water resource in cities. The rainwater is guided to the non-closed road surface from the closed road surface or the roof and is subjected to infiltration filtration of soil, so that the strength of surface runoff of the rainwater can be reduced, underground water is supplemented, partial pollutants in the rainwater can be removed, the rainwater is discharged on site, accidents caused by accumulated water are reduced, and the urban heat island effect relieving effect is one of effective measures.

Therefore, rainwater is collected on the water permeable pavement, which is a feasible rainwater utilization technology, and the water permeable pavement and the water permeable design are widely applied to the construction of various pavements and are important components in the construction of sponge cities.

However, most of the existing water-permeable pavements and water-permeable designs are permeable to water about the drainage of the pavements, so that the road pavements have a better drainage effect, but the urban heat island effect cannot be relieved.

SUMMERY OF THE UTILITY MODEL

In order to improve the life-span of permeating water of the pavement layer that permeates water, this application provides a natural quarrying structure of mating formation that permeates water in sponge city.

The application provides a natural permeable quarrying of sponge city structure of mating formation adopts following technical scheme:

natural quarrying structure of mating formation that permeates water in sponge city includes the bed course that permeates water, the basic unit that permeates water and the surface course that permeates water of laying in proper order from bottom to top at the road bed layer, still includes and is provided with the drainage channel on road both sides respectively along the vertical of road, the basic unit that permeates water is provided with the aqua storage tank, and the aqua storage tank is provided with the gap, gap and drainage channel intercommunication.

By adopting the technical scheme, in rainy days, a large amount of rainwater falls to the ground, on one hand, the rainwater is drained to the drainage channels at two sides of the road, on the other hand, the rainwater penetrates downwards through the water permeable surface layer, and the accumulation of rainwater on the ground surface is reduced; part of rainwater enters the water storage tank after passing through the permeable base layer, and can be discharged to the drainage channel through the water discharge opening when the water storage amount of the water storage tank is too high; in sunny days, water in the water storage tank is evaporated into water vapor, the water vapor moves upwards to the ground for the evaporation of the road surface, the utilization degree of rainwater is increased, and the urban heat island effect is relieved.

Preferably, a water absorbing part is arranged in the water storage tank.

Through adopting above-mentioned technical scheme, the piece that absorbs water will infiltrate down to the inside rainwater of aqua storage tank and draw, increases the deposit function of aqua storage tank, can slow down the inside moisture evaporation rate of aqua storage tank simultaneously.

Preferably, the water absorbing piece is a water absorbing sponge.

The water absorption sponge is an elastic porous material and has good water absorption, and by adopting the technical scheme, the water absorption sponge is used as a water absorption piece, so that the material is convenient to obtain, the implementation is simple, and the water absorption sponge can be directly placed in the water storage tank.

Preferably, the water storage tank is provided with a plurality of water storage tanks which are uniformly distributed on the permeable base layer.

Through adopting above-mentioned technical scheme, a plurality of aqua storage tank increases the save effect to the rainwater, improves the road to the storage function of rainwater.

Preferably, a plurality of the water storage tanks are communicated with each other, and the overflow ports of the water storage tanks close to the roadside are communicated with the drainage channel.

Through adopting above-mentioned technical scheme, intercommunication each other between the aqua storage tank reduces because the too high overflow that leads to of part aqua storage tank water level takes place the condition of moisture loss, has kept the average of the water level between each aqua storage tank to intercommunication each other between the aqua storage tank need not every aqua storage tank and all sets up the gap, lays in-process simple to operate.

Preferably, a broken stone water guide layer is further arranged between the water permeable base layer and the water permeable surface layer.

Through adopting above-mentioned technical scheme, the rainwater permeates downwards and through the surface course that permeates water, reachs the garrulous stone water guide layer, because garrulous stone water guide layer aggregate is great garrulous stone for this layer structure's void ratio is big for the surface course that permeates water, accelerates the speed that the rainwater permeates downwards.

Preferably, be provided with the reinforcing bar between basic unit and the surface course that permeates water, the reinforcing bar extends to the surface course that permeates water.

Through adopting above-mentioned technical scheme, be provided with the reinforcing bar between basic unit and the surface course that permeates water, when improving road structure bearing capacity, improve the tractive force between the surface course structure.

Preferably, the reinforcing steel bars are provided with a plurality of through holes which can be filled with concrete.

Through adopting above-mentioned technical scheme, the through-hole can be filled by the concrete, guarantees when further improving the tractive force between the road surface layer structure, improving road structure bearing capacity that the reinforcing bar has good intensity, is difficult for breaking.

Preferably, the longitudinal section of the permeable surface layer is inclined downwards from the middle part of the road to two sides and is in an arc shape.

By adopting the technical scheme, the longitudinal section of the water permeable surface layer is arranged in an arc shape, so that when raining or accumulated water exists on the road surface, the accumulated water is conveniently guided to the drainage channels on the two sides of the road; secondly, the curved structure can enhance the load bearing capacity of the road surface to the running vehicle.

Preferably, the distance between the high-level end and the low-level end of the water permeable surface layer is 30-55 mm.

By adopting the technical scheme, the distance between the high-position end and the low-position end of the permeable surface layer is 30-55mm, so that the downward-permeating water flow has a good guiding effect and the pavement can keep good stability.

In summary, the present application at least includes the following beneficial technical effects:

1. the water storage tank is arranged on the permeable base layer, so that the downward-permeating rainwater can be stored in rainy days; in sunny days, water in the water storage tank is evaporated into water vapor, the water vapor moves upwards to the ground for the evaporation of the road surface, the utilization degree of rainwater is increased, and the urban heat island effect is relieved;

2. through be provided with the reinforcing bar between basic unit and the surface course of permeating water, when improving road structure bearing capacity, improve the tractive force between the surface course structure.

Drawings

FIG. 1 is a longitudinal cross-sectional view of a natural permeable quarrying paving structure for a sponge city according to the present application;

fig. 2 is a partial structural schematic diagram of a reinforcing steel bar in the embodiment of the present application.

Description of reference numerals: 10. a roadbed layer; 11. a water-permeable cushion layer; 12. a water permeable base layer; 121. a water storage tank; 122. an overflow port; 123. a communicating pipe; 124. an overflow pipe; 125. a water-absorbing sponge; 13. a water guide layer of crushed stone; 14. reinforcing steel bars; 141. a vertical portion; 142. a horizontal portion; 143. a through hole; 15. a water permeable facing; 2. a drainage channel.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

Referring to fig. 1, the natural permeable quarrying pavement structure of the sponge city comprises drainage channels 2 respectively arranged at two sides of the road along the longitudinal direction of the road, the road comprises a road base layer 10, a permeable cushion layer 11, a permeable base layer 12 and a permeable surface layer 15, which are sequentially laid from bottom to top on the road base layer 10, the permeable base layer 12 is provided with a plurality of mutually communicated water storage tanks 121, overflow gaps 122 are formed in the water storage tanks 121 close to the side of the road, and the overflow gaps 122 are communicated with the drainage channels 2.

Referring to fig. 1, drainage channels 2 are laid on two sides of a road, the drainage channels 2 are arranged along the extending direction of the road, and the drainage channels 2 are communicated with a municipal drainage system. The longitudinal section of the drainage channel 2 is a hollow rectangle which is vertically placed. The side surface of the drainage channel 2 close to the road is made of reverse filtering materials, and the drainage channel 2 is communicated with the permeable cushion layer 11, the permeable base layer 12 and the permeable surface layer 15.

A permeable cushion layer 11 is laid on the road base layer 10. The permeable cushion layer 11 is generally made of natural macadam with the grain diameter smaller than 10mm and mixed with a certain proportion of cement mixture, and the range of the porosity after compaction is 15-22%. In the embodiment of the present application, the water-permeable mat layer 11 is laid to a thickness of 45 to 55 mm. The water permeable cushion layer 11 is laid to prevent water or underground water permeating into the roadbed from rising due to capillary phenomenon, and the influence of frost heaving of the water-containing soil base on the overall stable shape of the pavement structure is relieved.

A permeable base layer 12 is laid on the permeable cushion layer 11. The water-permeable base layer is prepared by mixing graded broken stones, graded gravel and a certain proportion of cement mixture. In the embodiment of the application, the water permeable base layer 12 is laid to a thickness of 55-65 mm. The water permeable base layer 12 has the same function as the water permeable cushion layer 11, and mainly plays a role in bearing load, permeating water and storing water.

A plurality of water storage tanks 121 are arranged inside the permeable substrate 12. The water storage tank 121 is vertically arranged in a hollow cylindrical shape, and the axis direction is perpendicular to the ground. The tank bottom and the tank wall of the water storage tank 121 are both of a watertight concrete structure. A water-absorbing sponge 125 is placed inside the water storage tank 121. The water storage tank 121 is provided with a plurality of water storage tanks which are uniformly arranged in the permeable base layer 12 at intervals. In the present embodiment, 5 water storage tanks 121 are provided along the width direction of the road. A communication pipe 123 is connected between the water storage tanks 121. The communication pipe 123 is horizontally disposed, and both ends of the communication pipe 123 communicate with the adjacent two water storage tanks 121. The water storage tank 121 near the side of the road is provided with a spillway gap 122, the spillway gap 122 is positioned near the top of the side wall of the drainage channel 2, the spillway gap 122 is communicated with a spillway pipe 124, and the spillway pipe 124 is communicated with the drainage channel 2. In the present embodiment, the communication pipe 123 and the overflow pipe 124 are PP-R water pipes.

When rainwater permeates into the permeable base layer 12, a part of the rainwater enters the water storage tank 121, and the water absorption sponge 125 inside the water storage tank 121 absorbs the rainwater and remains inside the water storage tank 121. When rainwater infiltration volume is more, because intercommunication each other between a plurality of aqua storage tanks 121, the rainwater evenly arranges and between the individual water drainage tank, when aqua storage tank 121 water level was too high can't carry out the water storage, the rainwater of unable deposit can be arranged to drainage channel 2 through gap 122. In sunny days, the water in the water storage tank 121 is evaporated upwards to the ground for the pavement to evaporate, so that the utilization degree of rainwater is increased, and the urban heat island effect is relieved.

A broken stone water guide layer 13 is laid above the water permeable base layer 12, and a stainless steel net is covered on the top of the water storage tank 121 for convenience. The water guide layer 13 of the crushed stone is a skeleton formed by single-grain-size aggregates with larger grain sizes, the maximum nominal grain size is larger than 26.5mm, and the crushed stone is formed by skeleton gap types formed by filling gaps with a certain amount of fine aggregates. The porosity of the broken stone seepage layer is large, so that the flowing speed is accelerated when rainwater seeps downwards to reach the broken stone seepage layer.

The permeable surface layer 15 is paved by permeable asphalt mixture, which is prepared by mixing mineral aggregate, gravel, stone chips or sand, mineral powder and the like with a certain proportion of road asphalt material. Due to the porous structure of the permeable surface layer 15, rainwater accumulated on the pavement can permeate into the permeable surface layer 15. In addition, the longitudinal section of the surface layer 15 that permeates water is the arc setting from the road middle part to both sides downward sloping for the whereabouts rainwater can not collect in the road and pile up, to the road both sides drainage 2, reduces the inconvenience that ponding caused to the vehicle and pedestrian, and the distance between the high-order end of the surface layer 15 that permeates water and the low-order end is 30-55mm, in this application embodiment, the distance between the high-order end of the surface layer 15 that permeates water and the low-order end is 50 mm. The arc-shaped setting has better supporting effect on vehicles running on the road surface, improves the structural strength of the road surface and prolongs the service life of the road surface.

Referring to fig. 1, in order to reinforce the connection strength between the water-permeable base layer 12 and the crushed stone water guide layer 13, reinforcing steel bars 14 are provided between the water-permeable base layer 12 and the crushed stone water guide layer 13, each reinforcing steel bar 14 includes a horizontal portion 142 and a vertical portion 141, the horizontal portion 142 is a horizontally disposed steel bar with a mesh structure, and the horizontal portion 142 is provided between the water-permeable base layer 12 and the water-permeable surface layer 15. At each joint of the horizontal portion 142, a reinforcing bar extends vertically upward and downward. To reinforce the vertical portion 141 of the reinforcing bars 14, the vertical portion 141 is fixedly connected with the horizontal portion 142. The part that vertical portion 141 upwards extended is laid inside the permeable cushion layer, and the part that vertical portion 141 downwards extended is inserted inside crushed stone water guide layer 13. Referring to fig. 2, the reinforcing steel bars 14 are provided with a plurality of circular through holes 143 penetrating through the reinforcing steel bars, and the through holes 143 can be filled with cement during the road casting process.

When the pavement is paved, in the paving process of the crushed stone water guide layer 13, the reinforcing steel bars 14 are inserted on the crushed stone water guide layer 13, and then the water permeable surface layer 15 is paved. The reinforcing bars 14 are inserted into the portion of the crushed stone water guide layer 13, and the through holes 143 are filled with cement inside the crushed stone layer. The reinforcing bars 14 are inserted into the water permeable facing 15, and the through holes 143 are filled with cement inside the water permeable facing 15. The through holes 143 can be filled with concrete, further improve the basic unit 12 that permeates water and the linking force between the rubble water guide layer 13, guarantee the reinforcing bar and have good intensity when improving road structure bearing capacity, can not take place to keep apart between the messenger pavement layer structure, and the difficult fracture that takes place of layer structure.

The implementation principle of the natural permeable quarrying pavement structure of the sponge city of the embodiment of the application is as follows: in rainy days, the falling rainwater drains to the drainage channels 2 at two sides along the permeable surface layer 15, and meanwhile, part of accumulated rainwater permeates downwards and sequentially permeates to the permeable base layer 12. Part of the rainwater passes through the permeable base layer 12, then seeps down to the permeable cushion layer 11, and finally is drained to the drainage channel 2. After passing through the permeable base layer 12, a part of the rainwater enters the water storage tank 121 and is absorbed by the water absorption sponge 125 in the water storage tank 121 for storage. In rainy days, when the water storage amount of the water storage tank 121 is too high, the water can be discharged to the drainage channel 2 through the overflow port 122; in sunny days, water in the water storage tank 121 is evaporated into water vapor, and the water vapor moves upwards to the ground for the evaporation of the road surface, so that the utilization degree of rainwater is increased, and the urban heat island effect is relieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a natural quarrying structure of permeating water in sponge city, includes the bed course (11) that permeates water that lay in proper order at road bed course (10) from bottom to top, the basic unit (12) that permeates water and the surface course (15) that permeates water, still includes vertically along the road and is provided with drainage channel (2) on road both sides respectively, its characterized in that: the permeable base layer (12) is provided with a water storage tank (121), the water storage tank (121) is provided with an overflow opening (122), and the overflow opening (122) is communicated with the drainage channel (2).

2. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: a water absorbing part is arranged in the water storage tank (121).

3. The sponge city natural water permeable quarrying paving structure according to claim 2, characterized in that: the water absorbing piece is a water absorbing sponge (125).

4. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: the water storage tank (121) is provided with a plurality of water storage tanks which are uniformly distributed on the permeable base layer (12).

5. The sponge city natural water permeable quarrying paving structure according to claim 4, characterized in that: the water storage tanks (121) are mutually communicated, and overflow gaps (122) of the water storage tanks (121) close to the roadside are communicated with the drainage channel (2).

6. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: and a broken stone water guide layer (13) is also arranged between the permeable base layer (12) and the permeable surface layer (15).

7. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: be provided with reinforcing bar (14) between basic unit (12) and the surface course (15) that permeates water, reinforcing bar (14) extend to surface course (15) that permeates water.

8. The sponge city natural water permeable quarrying paving structure according to claim 7, characterized in that: the reinforcing steel bars (14) are provided with a plurality of through holes (143) which can be filled with concrete.

9. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: the longitudinal section of the permeable surface layer (15) is arranged in an arc shape from the middle of the road to the two sides in an inclined and downward manner.

10. The sponge city natural water permeable quarrying paving structure according to claim 1, characterized in that: the distance between the high-level end and the low-level end of the water permeable surface layer (15) is 30-55 mm.