CN212103540U

CN212103540U - A road surface structure for sponge city

Info

Publication number: CN212103540U
Application number: CN202020412159.5U
Authority: CN
Inventors: 汤钟; 张亮; 俞露; 丁年; 李峰
Original assignee: Urban Planning & Design Institute Of Shenzhen
Current assignee: Shenzhen Urban Planning and Design Institute Co.,Ltd.
Priority date: 2020-03-18
Filing date: 2020-03-26
Publication date: 2020-12-08
Anticipated expiration: 2030-03-26

Abstract

The utility model discloses a road surface structure for sponge city, which comprises a foundation layer and a pavement layer, wherein the pavement layer comprises a permeable cushion layer, a water storage layer and a road surface layer which are sequentially stacked from bottom to top; the permeable cushion layer is arranged on the ground base layer; the pavement layer is provided with a linear drainage ditch and a drainage channel, and the linear drainage ditch extends downwards from the upper surface of the pavement layer and is communicated with the water storage layer; the top of the drainage channel is provided with a porous cover plate I. The utility model is used for the road surface structure in sponge city has the function of retaining, infiltration and drainage, can realize the effective control to the runoff when guaranteeing safe drainage.

Description

A road surface structure for sponge city

Technical Field

The utility model belongs to the technical field of the road surface structural design technique and specifically relates to a road surface structure for sponge city is related to.

Background

Large-area hardened pavement in urban construction, such as sidewalk, square and the like, has runoff total amount and peak value increase when rainfall compared with natural state, causes pressure to municipal pipe network system, has the great risk of easily taking place waterlogging. In sponge city construction, the runoff of the underlying surface needs to be controlled, wherein the most widely used runoff control form is a permeable pavement form using permeable bricks, permeable concrete and the like, but the drainage effect and the runoff control effect of the drainage form and the permeable pavement form are not ideal, the requirement on pavement structure is high, and the operation and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a road surface structure for sponge city, this road surface structure have the function of retaining, infiltration and drainage, can realize the effective control to the runoff when guaranteeing drainage safety.

In a first aspect, an embodiment of the present invention provides a road surface structure for sponge city, including:

a ground layer;

the pavement layer comprises a water permeable cushion layer, a water storage layer and a pavement layer which are sequentially stacked from bottom to top, and the water permeable cushion layer is arranged on the foundation layer; the pavement layer is provided with a linear drainage groove and a drainage channel, and the linear drainage groove extends downwards from the upper surface of the pavement layer and is communicated with the water storage layer; and a first porous cover plate is arranged at the top of the drainage channel.

The embodiment of the utility model provides a road surface structure for sponge city has following beneficial effect at least: the pavement structure forms a pavement layer by sequentially stacking a permeable cushion layer, a water storage layer and a pavement layer on a foundation layer, and a linear drainage ditch which extends downwards from the upper surface of the pavement layer and is communicated with the water storage layer is formed on the pavement layer, rainwater can flow into the water storage layer through the linear drainage ditch, and further can continuously seep downwards through the permeable cushion layer, so that the rainwater can be ensured to smoothly circulate, the functions of water storage and infiltration are achieved, and the effective control of runoff is realized; in addition, through the setting of the ditch on the layer of mating formation, under the great and condition that surpasss water storage capacity of water-storage layer of rainfall, the rainwater can flow to the ditch, discharges through the ditch to realize effective drainage, prevent the emergence of waterlogging. By last, this road surface structure has the function of retaining, infiltration and drainage, can guarantee the effective control to the runoff when drainage safety is realized, and loose to the road surface layer requirement, reduces the maintenance cost, can satisfy the requirement of sponge city construction.

According to the utility model discloses a road surface structure for sponge city of other embodiments, linear escape canal is vertically and horizontally staggered and arranges.

According to the utility model discloses a road surface structure for sponge city of other embodiments, parallel and adjacent two interval between the linear escape canal groove is 3 ~ 5 m.

According to the utility model discloses a road surface structure for sponge city of other embodiments, linear escape canal groove extends to the inside of water-storage layer.

According to the utility model discloses a road surface structure for sponge city of other embodiments, linear drainage ditch groove extends to the bottom of water-storage layer.

According to the utility model discloses a road surface structure for sponge city of other embodiments, the top of linear escape canal groove is equipped with porous apron two.

According to the utility model discloses a road surface structure for sponge city of other embodiments, linear escape canal groove has the throat, the opening width of throat is 1 ~ 3 cm.

According to the utility model discloses a road surface structure for sponge city of other embodiments, the drainage canal certainly the upper surface downwardly extending of surface course layer reaches the bottom of the bed course that permeates water, just the lateral wall of drainage canal is the structure of permeating water.

According to the utility model discloses a road surface structure for sponge city of other embodiments, the aquifer is PP water storage module layer, the cotton layer of porous fiber or cistern.

According to the utility model discloses a road surface structure for sponge city of other embodiments, the pavement layer is impervious pavement layer or the pavement layer that permeates water.

Drawings

Fig. 1 is a plan view of a pavement structure for a sponge city according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural view of a linear drainage channel in a pavement structure for sponge cities according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a linear drainage groove in a pavement structure for sponge cities according to another embodiment of the present invention.

Detailed Description

The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" on another feature, it can be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, connected, or mounted on the other feature. In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

Referring to fig. 1 to 2, fig. 1 is a plan view of a pavement structure for a sponge city according to an embodiment of the present invention, and fig. 2 is a sectional view taken along a direction a-a in fig. 1. As shown in fig. 1 and 2, the pavement structure for sponge cities of the present embodiment includes a ground base layer (not shown in the drawings) and a pavement layer; the ground base layer is used as a road surface base layer, and the pavement layer is paved on the ground base layer. The pavement layer comprises a permeable cushion layer 110, an aquifer 120 and a pavement layer 130 which are sequentially stacked from bottom to top, the pavement layer is provided with a linear drainage groove 140 and a drainage channel 150, the linear drainage groove 140 extends downwards from the upper surface of the pavement layer 130 and is communicated with the aquifer 120, so that rainwater can flow into the aquifer 120 through the linear drainage groove 140; the top of the drainage channel 150 is provided with a porous cover plate 151.

The permeable cushion 110 can allow rainwater flowing into the aquifer 120 to permeate the foundation layer, and the permeability generally needs to meet the requirement that the water in the aquifer 120 is emptied within 24 hours. The permeable cushion 110 can be made of permeable concrete, permeable sand, or other cushion structures.

The water storage layer 120 can be made of PP water storage modules, porous fiber cotton and other water storage materials, and in addition, the water storage layer 120 can also be designed as a water storage tank. The thickness of the aquifer 120 is generally 5-10 cm.

The pavement layer 130 may be an impermeable pavement layer or a permeable pavement layer, and may be formed by conventional impermeable hard pavements (such as hard slate pavements) or permeable pavements (such as permeable asphalt pavements or permeable brick pavements) according to local conditions. To enhance the strength of the pavement structure, the pavement layer 130 may be a waterproof stone slab pavement layer.

The linear drainage channel 140 may extend from the upper surface of the roadway layer 130 down to the top, interior, or bottom of the aquifer 120; in order to improve drainage and water storage efficiency, the linear drainage channel 140 may be extended to the inside of the aquifer 120, even to the bottom of the aquifer 120, so that the contact area of the aquifer 120 with rainwater flowing into the linear drainage channel 140 can be increased, and the treatment efficiency can be improved. In this embodiment, a linear drainage channel 140 extends downwardly from the upper surface of the pavement layer 130 to the bottom of the aquifer 120.

In order to improve drainage efficiency and the control to the runoff, in this embodiment, the linear drainage grooves 140 that set up on the layer of mating formation are criss-cross and arrange, and the interval between parallel and adjacent two linear drainage grooves 140 is generally 3 ~ 5 m. Of course, in other embodiments, the linear drainage grooves 140 may be arranged in other manners, such as parallel arrangement, polygonal grid arrangement, etc., according to actual requirements.

The linear drain groove 140 may be a cover plate type linear drain groove or a non-cover plate type linear drain groove. In the present embodiment, the linear drainage groove 140 is a coverless type linear drainage groove, and has a square longitudinal section. In other embodiments, the linear drain groove 140 may be designed in other shapes and configurations. For example, referring to fig. 3, fig. 3 is a schematic structural view of a linear drainage groove in a pavement structure for a sponge city according to another embodiment of the present invention, and as shown in fig. 3, the linear drainage groove 240 is a cover plate type linear drainage groove, the bottom surface of the linear drainage groove is a curved surface, and a second porous cover plate 241 is disposed on the top of the linear drainage groove 240.

The opening of the cover plate type linear drainage groove is covered with the porous cover plate II, so that the groove width of the cover plate type linear drainage groove can be relatively wider. For the uncovered linear drainage ditch, the opening is not too wide in practical use, and the opening width is usually set to be about 1-3 cm. In order to improve the drainage and water storage effects of the pavement structure, the linear drainage ditch can be set into a drainage ditch with a necking structure, and the structure design of lower part width and upper part opening narrowing is adopted. For example, referring to fig. 4, fig. 4 shows a schematic structural diagram of a linear drainage groove in a pavement structure for a sponge city according to another embodiment of the present invention, as shown in fig. 4, the linear drainage groove 340 is a cover-less type linear drainage groove, the linear drainage groove 340 has a reduced portion 341, the reduced portion 341 has an opening 342, and the width of the opening 342 is generally 1-3 cm.

In order to further improve the drainage efficiency of the pavement structure, the drainage channel 150 may be designed to extend from the upper surface of the pavement layer 130 to the bottom of the water permeable mat 110, and the side wall of the drainage channel 150 is of a water permeable structure, so that rainwater may flow into the drainage channel 150 not only from the top opening of the drainage channel 150, but also through the side wall, thereby improving the drainage efficiency. The top of the drainage channel 150 is provided with a first porous cover plate 151, and the openings of the first porous cover plate 151 may be circular holes, linear holes, etc., and the shape of the openings is not limited. The opening size and the opening rate can be designed according to the local perennial specific rainfall conditions, and the requirement of 1.5-2 times of the rainfall intensity is generally met.

By adopting the pavement structure for the sponge city, in the rainy days, under the condition of small rainfall, rainwater can flow into the water storage layer 120 through the linear drainage groove 140 and then seep to the ground base layer through the water permeable cushion layer 110; when the rainfall is large, the rainwater can flow to the drainage channel 150 after the water storage layer 120 is full of water, and the rainwater can be drained through the drainage channel 150, so that the effects of continuous storage and permeation of medium and small rain on site and smooth drainage of heavy rain can be realized. Wherein, through the setting of the ditch 150 on the layer of mating formation to and the setting of linear escape canal groove 140 cooperation water-storage layer 120 and the bed course 110 that permeates water, make road surface structure have the function of retaining, infiltration and drainage, can realize the effective control to the runoff when guaranteeing safe drainage, and this structure is loose to the requirement of road surface layer 130, and the maintenance cost is low, can satisfy the requirement of sponge city construction.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A pavement structure for sponge cities, comprising:

a ground layer;

the pavement layer comprises a water permeable cushion layer, a water storage layer and a road surface layer which are sequentially stacked from bottom to top; the permeable cushion layer is arranged on the foundation layer; the pavement layer is provided with a linear drainage groove and a drainage channel, and the linear drainage groove extends downwards from the upper surface of the pavement layer and is communicated with the water storage layer; and a first porous cover plate is arranged at the top of the drainage channel.

2. The pavement structure for sponge cities as claimed in claim 1, wherein the linear drainage channels are arranged in a criss-cross pattern.

3. The pavement structure for the sponge city according to claim 2, wherein the distance between two parallel and adjacent linear drainage channels is 3-5 m.

4. The pavement structure for sponge cities as claimed in claim 1, wherein the linear drainage channels extend to the interior of the aquifer.

5. The pavement structure for sponge cities as claimed in claim 1, wherein the linear drainage channels extend to the bottom of the aquifer.

6. The pavement structure for the sponge city as claimed in claim 1, wherein a second porous cover plate is arranged on the top of the linear drainage channel.

7. The pavement structure for the sponge city according to claim 1, wherein the linear drainage groove has a throat portion, and the opening width of the throat portion is 1-3 cm.

8. A pavement structure for a sponge city according to any one of claims 1 to 7, wherein the drainage channels extend from the upper surface of the pavement layer down to the bottom of the water-permeable mat layer, and the side walls of the drainage channels are of water-permeable structure.

9. Pavement structure for sponge cities according to any of claims 1 to 7, characterized in that the aquifer is a PP aquifer module layer, a porous fiber cotton layer or a reservoir.

10. A pavement structure for a sponge city according to any one of claims 1 to 7, characterized in that the pavement layer is a water-impermeable pavement layer or a water-permeable pavement layer.