CN220746480U

CN220746480U - Road surface drainage structures

Info

Publication number: CN220746480U
Application number: CN202322029973.5U
Authority: CN
Inventors: 冯柯; 王春华; 潘家辉; 邓红生; 陈强; 成炤玮; 孙星华; 雷桐; 熊木春
Original assignee: Guangdong Guanyue Highway and Bridge Co Ltd
Current assignee: Guangdong Guanyue Highway and Bridge Co Ltd
Priority date: 2023-07-29
Filing date: 2023-07-29
Publication date: 2024-04-09
Anticipated expiration: 2033-07-29

Abstract

The utility model relates to a pavement drainage structure. The road surface drainage structure includes: a pavement drainage structure and a green belt drainage structure. The pavement drainage structure comprises an anti-seepage geotechnical cloth layer, a graded gravel layer, a permeable concrete layer, a dry and hard permeable cement mortar layer, a permeable brick layer and a gravel blind ditch which is arranged between the anti-seepage geotechnical cloth layer and the graded gravel layer and is arranged along the extending direction of the pavement, wherein the anti-seepage geotechnical cloth layer, the graded gravel layer, the permeable concrete layer, the dry and hard permeable cement mortar layer and the permeable brick layer are sequentially paved from bottom to top; the water permeable brick layer is inclined to one side of the green belt; the green belt is lower than the sidewalk, and radial rainwater on the sidewalk can flow into the green belt. The road surface drainage structure can reduce comprehensive runoff coefficient in the road surface range, slow down rainfall peak value formation time, reduce the rainwater that gets into the roadway, effectively prevented roadway water logging and urban flood when heavy rain.

Description

Road surface drainage structures

Technical Field

The utility model relates to the technical field of pavement structures, in particular to a pavement drainage structure.

Background

With the development of cities, green lands gradually decrease, reinforced concrete buildings and structures are increased instead, and original ecological environments are artificially changed, so that the urban ecological environments are damaged, and the living environments of human beings are increasingly worsened. So that the surface runoff during rainfall is increased, and the urban waterlogging is increased. And most of rainwater in the sidewalk enters the sidewalk, so that the sidewalk is immersed in water during heavy rain.

Disclosure of Invention

The present utility model has been made in view of the above problems, and it is an object of the present utility model to provide a pavement drainage structure that overcomes or at least partially solves the above problems.

The road surface drainage structure includes:

the pavement drainage structure comprises an anti-seepage geotechnical cloth layer, a graded gravel layer, a permeable concrete layer, a dry and hard permeable cement mortar layer, a permeable brick layer and a gravel blind ditch which is arranged between the anti-seepage geotechnical cloth layer and the graded gravel layer and is arranged along the extending direction of the pavement, wherein the anti-seepage geotechnical cloth layer, the graded gravel layer, the permeable concrete layer, the dry and hard permeable cement mortar layer and the permeable brick layer are sequentially paved from bottom to top; the two sides of the impermeable geotechnical cloth layer respectively surround the lower ends of both curbstone and kerb at the edges of the two sides of the pavement; rainwater can sequentially permeate through the water permeable brick layer, the dry and hard water permeable cement mortar layer, the water permeable concrete layer and the graded broken stone layer and is gathered in the broken stone blind ditch; a first water permeable pipe is arranged in the gravel blind ditch, and rainwater in the first water permeable pipe can be drained to a rainwater inspection well through a water diversion pipe; the water permeable brick layer is inclined to one side of the green belt;

the green belt drainage structure is characterized in that the green belt is lower than a sidewalk, and radial rainwater on the sidewalk can flow into the green belt; the green belt drainage structure comprises an overflow well arranged on the green belt, wherein an overflow port at the top of the overflow well is positioned at the lowest part of the green belt and is provided with a well cover, and rainwater in the overflow well can be drained to a rainwater inspection well through a rainwater branch pipe; the green belt drainage structure further comprises a second water permeable pipe which is buried in the green belt and is distributed along the extending direction of the road surface, and the second water permeable pipe is communicated with the overflow well.

In one embodiment, the water permeable brick layer has a slope angle of 1 °.

In one embodiment, the first water permeable pipe is a PVC water permeable pipe, and the water conduit is a PVC pipe, and the water conduit is disposed obliquely.

In one embodiment, the rainwater branch pipes are reinforced concrete pipes and are arranged in an inclined mode, and the slope angle is 1 degree.

In one embodiment, the graded crushed stone layer has a thickness of 15cm, the permeable concrete layer has a thickness of 15cm, the dry and hard permeable cement mortar layer has a thickness of 2cm, and the permeable brick layer has a thickness of 8cm; the width and the height of the cross section of the gravel blind ditch are 25cm, and the outer diameter of the first permeable tube is 10cm.

In one embodiment, the second permeable pipe is a soft permeable pipe, and the aperture ratio is 1% -3%.

In one embodiment, the second permeable pipe is provided with a gravel layer on the periphery, and the gravel layer is wrapped with permeable geotextile.

In one embodiment, the top of the well cover is 50-100 mm higher than the overflow port.

According to the pavement drainage structure, the pavement adopts the water permeable structure, so that rainwater is effectively stored, part of the rainwater is drained to the rainwater inspection well through the pavement drainage structure, and then is drained into the rainwater pipe. The water permeable brick layer inclines to one side of the green belt, the green belt is lower than the sidewalk, radial rainwater on the sidewalk can flow into the green belt, rainwater in the green belt is drained to the rainwater inspection well through the green belt drainage structure, and then the rainwater is drained into the rainwater pipe. The road surface drainage structure can reduce comprehensive runoff coefficient in the road surface range, slow down rainfall peak value formation time, reduce the rainwater that gets into the roadway, effectively prevented roadway water logging and urban flood when heavy rain.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:

fig. 1 is a schematic view of an exemplary embodiment of a pavement drainage structure according to the present utility model;

FIG. 2 is a structural layout of the pavement drainage structure of FIG. 1;

fig. 3 is a structural layout of the green belt drainage structure of fig. 1.

Reference numerals illustrate: 1. an impermeable geotechnical cloth layer; 2. grading the crushed stone layer; 3. a water permeable concrete layer; 4. a dry and hard water-permeable cement mortar layer; 5. a water permeable brick layer; 6. gravel blind ditches; 7. curbstone; 8. a kerb; 9. a first water permeable pipe; 10. a water conduit; 11. a water manhole; 12. a rain pipe; 13. an overflow well; 14. a well cover; 15. a rain water branch pipe; 16. a second water permeable pipe; 17. a gravel layer; 18. water permeable geotextile; 101. a green belt; 102. sidewalk; 103. the motor vehicle lane.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary for the purpose of illustrating the present utility model and are not to be construed as limiting the present utility model, and various changes, modifications, substitutions and alterations may be made therein by one of ordinary skill in the art without departing from the spirit and scope of the present utility model as defined by the appended claims and their equivalents.

The terms "center," "longitudinal," "transverse," "length," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like in the description of the present utility model refer to an orientation or positional relationship as indicated on the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the terms "comprise," "include," and any variations thereof, are intended to cover a non-exclusive inclusion.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A road surface drainage structure according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

Referring to fig. 1, a pavement drainage structure according to an embodiment of the present utility model includes a pavement drainage structure, a green belt drainage structure.

Referring now to fig. 2, the pavement drainage structure comprises an impermeable geotechnical cloth layer 1, a graded gravel layer 2, a permeable concrete layer 3, a dry and hard permeable cement mortar layer 4, a permeable brick layer 5 and a gravel blind ditch 6 which is positioned between the impermeable geotechnical cloth layer 1 and the graded gravel layer 2 and is distributed along the extending direction of the pavement, wherein the impermeable geotechnical cloth layer 1, the graded gravel layer 2, the permeable concrete layer 3, the dry and hard permeable cement mortar layer 4 and the permeable brick layer 5 are sequentially paved from bottom to top. The lower ends of curbstones 7 and curbstones 8 located at the edges of two sides of a pavement are respectively surrounded by two sides of the impermeable geotechnical cloth layer 1, and rainwater can sequentially permeate downwards through the water permeable brick layer 5, the dry and hard water permeable cement mortar layer 4, the water permeable concrete layer 3 and the graded broken stone layer 2 and is gathered in the broken stone blind ditch 6, so that rainwater cannot continuously permeate downwards to the lower roadbed filler or permeate towards two sides due to the obstruction of the impermeable geotechnical cloth layer 1. A first water permeable pipe 9 is arranged in the gravel blind ditch 6, and rainwater in the first water permeable pipe 9 can be drained to a rainwater inspection well 11 through a water diversion pipe 10 and then discharged into a rainwater pipe 12.

The water permeable brick layer 5 inclines to one side of the green belt, the green belt is lower than a sidewalk, and radial rainwater on the sidewalk can flow into the green belt. The pavement drainage structure can reduce comprehensive runoff coefficient in the pavement range, slow down rainfall peak forming time and reduce rainwater entering the pavement.

Referring now to fig. 3, the greenbelt drainage structure includes an overflow well 13 disposed on the greenbelt, an overflow port at the top of the overflow well 13 is located at the lowest position of the greenbelt and is provided with a well cover 14, the well cover 14 can prevent pedestrians from accidentally stepping into the overflow well 13 on one hand, and can reduce sundries entering the overflow well 13 on the other hand, greenbelt runoff rainwater enters the overflow well 13 through the well cover 14, and rainwater in the overflow well 13 can be drained to the rainwater inspection well 11 through the rainwater branch pipe 15.

The green belt drainage structure further comprises a second water permeable pipe 16 buried in the green belt and distributed along the extending direction of the road surface, the second water permeable pipe 16 is used for collecting and discharging water seepage of soil in the green belt, and the second water permeable pipe 16 is communicated with the overflow well 13. Preferably, the second permeable pipe 16 is provided with a gravel layer 17 at the periphery, and the gravel layer 17 is wrapped with permeable geotextile 18. The use of gravel and water permeable geotextiles 18 filters the sediment and prevents the sediment from entering the second permeable tube 16 and clogging.

In a specific construction example, the thickness of the graded broken stone layer 2 is 15cm, the thickness of the permeable concrete layer 3 is 15cm, the thickness of the dry and hard permeable cement mortar layer 4 is 2cm, and the thickness of the permeable brick layer 5 is 8cm; the width and the height of the section of the gravel blind ditch 6 are 25cm, and the outer diameter of the first water permeable pipe 9 is 10cm. The 5 slope angle of the water permeable brick layer is 1 degree. The first water permeable pipe 9 is a PVC water permeable pipe, the water diversion pipe 10 is a PVC pipe, and the water diversion pipe 10 is obliquely arranged. The rainwater branch pipes 15 are reinforced concrete pipes and are arranged in an inclined mode, and the slope angle is 1 degree. The second permeable pipe 16 is a soft permeable pipe, and the aperture ratio is 1% -3%. The top of the well cover 14 is 50-100 mm higher than the overflow port.

According to the pavement drainage structure, the pavement adopts the water permeable structure, rainwater is effectively stored, part of the rainwater is drained to the rainwater inspection well through the pavement drainage structure, and then is drained into the rainwater pipe. The water permeable brick layer inclines to one side of the green belt, the green belt is lower than the sidewalk, radial rainwater on the sidewalk can flow into the green belt, rainwater in the green belt is drained to the rainwater inspection well through the green belt drainage structure, and then the rainwater is drained into the rainwater pipe. The road surface drainage structure can reduce comprehensive runoff coefficient in the road surface range, slow down rainfall peak value formation time, reduce the rainwater that gets into the roadway, effectively prevented roadway water logging and urban flood when heavy rain.

Claims

1. A pavement drainage structure, comprising:

2. The pavement draining structure according to claim 1, wherein: the slope angle of the water permeable brick layer is 1 degree.

3. The pavement draining structure according to claim 2, wherein: the first water permeable pipe is a PVC water permeable pipe, and the water diversion pipe is a PVC pipe and is obliquely arranged.

4. A pavement draining structure according to claim 3, wherein: the rainwater branch pipes are reinforced concrete pipes and are arranged in an inclined mode, and the slope angle is 1 degree.

5. The pavement draining structure according to any one of claims 1 to 4, wherein: the thickness of the graded broken stone layer is 15cm, the thickness of the permeable concrete layer is 15cm, the thickness of the dry and hard permeable cement mortar layer is 2cm, and the thickness of the permeable brick layer is 8cm; the width and the height of the cross section of the gravel blind ditch are 25cm, and the outer diameter of the first permeable tube is 10cm.

6. The pavement draining structure according to claim 5, wherein: the second water permeable pipe is a soft water permeable pipe, and the aperture ratio is 1% -3%.

7. The pavement draining structure according to claim 6, wherein: and the periphery of the second permeable pipe is provided with a gravel layer, and the gravel layer is wrapped with permeable geotextile.

8. The pavement draining structure according to claim 6, wherein: the top of the well cover is 50-100 mm higher than the overflow port.