CN111560815A - Road surface rainwater side drainage permeation structure and construction method - Google Patents
Road surface rainwater side drainage permeation structure and construction method Download PDFInfo
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- CN111560815A CN111560815A CN202010400445.4A CN202010400445A CN111560815A CN 111560815 A CN111560815 A CN 111560815A CN 202010400445 A CN202010400445 A CN 202010400445A CN 111560815 A CN111560815 A CN 111560815A
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000008595 infiltration Effects 0.000 claims abstract description 126
- 238000001764 infiltration Methods 0.000 claims abstract description 126
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000004575 stone Substances 0.000 claims abstract description 42
- 238000005325 percolation Methods 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 25
- 230000035515 penetration Effects 0.000 claims description 26
- 239000004746 geotextile Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 15
- 239000012466 permeate Substances 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009991 scouring Methods 0.000 abstract description 10
- 230000035699 permeability Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
- E01C11/223—Kerb-and-gutter structures; Kerbs with drainage openings channel or conduits, e.g. with out- or inlets, with integral gutter or with channel formed into the kerb ; Kerbs adapted to house cables or pipes, or to form conduits
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/046—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps adapted to be used with kerbs
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a road surface rainwater side drainage permeation structure and a construction method, wherein the road surface rainwater side drainage permeation structure comprises the following steps: the infiltration ditch is formed by the inner concave surface of the roadbed base, curb stones are vertically erected on the roadbed base at least one side of the infiltration ditch, the curb stones extend along the length direction of the roadbed, and an infiltration layer for infiltrating rainwater is filled in a space formed by the infiltration ditch and the curb stones. A plurality of water drainage through holes are formed in the curb stone at intervals in the length direction of the curb stone, the water inlet ends of the water drainage through holes are communicated with the road surface of a road layer laid on a roadbed base surface, and the water drainage ends of the water drainage through holes are communicated with the percolation layer so as to allow rainwater on the road surface to percolate into the percolation layer. In the road surface rainwater side drainage and permeation structure, when rainwater is drained through the drainage through holes, the drainage rate can be increased, the scouring force of drainage on soil bodies of a roadbed and a green belt is reduced, and the scouring water loss of the roadbed and the green belt due to overlarge rainfall is avoided.
Description
Technical Field
The invention relates to the field of road surface rainwater side drainage, in particular to a road surface rainwater side drainage permeation structure. In addition, the invention also relates to a construction method for constructing the rainwater side drainage and permeation structure of the pavement.
Background
At present, sponge city construction is vigorously advocated in China, and in Shenzhen dragon hillock region and slab distribution liaison road project construction of the Shenzhen city, which is carried out by China, the road is provided with a water inlet (a rainwater collecting port) for enabling rainwater to permeate into roadbed soil bodies and green belt soil bodies according to the requirement of Shenzhen city sponge city construction. However, as the construction time span of the project is long, the phenomenon that water is lost at a green belt and a roadbed at a rainwater collecting opening due to over concentrated water flow at the constructed rainwater collecting water inlet is found in the construction process; and rainwater collecting water inlets on the kerbstone cannot be arranged too much (at least one is arranged at intervals of 20 m) so as not to influence the driving safety of the road.
Disclosure of Invention
The invention provides a construction method of a road surface rainwater side drainage permeation structure, and aims to solve the technical problems that in the prior art, a rainwater collection port is arranged on a curb, so that a green belt and a roadbed at the rainwater collection port are damaged by water, and the driving safety of a road is influenced.
The technical scheme adopted by the invention is as follows:
a road surface rainwater side drainage infiltration structure comprises an infiltration ditch formed by the inner concave of a roadbed base surface, wherein the infiltration ditch extends along the length direction of a roadbed; a plurality of water drainage through holes are formed in the curb stone at intervals in the length direction of the curb stone, the water inlet ends of the water drainage through holes are communicated with the road surface of a road layer laid on a roadbed base surface, and the water drainage ends of the water drainage through holes are communicated with the percolation layer so as to allow rainwater on the road surface to percolate into the percolation layer.
Furthermore, the drainage through holes are distributed on the side wall surface of the curb stone and vertically penetrate through the curb stone along the thickness direction of the curb stone; or the drainage through holes are distributed on the side wall surface of the curb stone and downwards incline to penetrate through the curb stone along the direction from the water inlet side to the water outlet side of the curb stone.
Furthermore, the radial cross section of the drainage through hole is circular, rectangular or regular polygon, and the radial cross section area of the drainage through hole is gradually reduced from the water inlet end to the water outlet end; the diameter of the drainage through hole is 60 mm-80 mm, and the height from the lowest point of the water inlet end of the drainage through hole to the road surface is 0-20 mm.
Furthermore, the road surface rainwater side drainage and permeation structure also comprises a first permeation pipe for permeating rainwater, the water inlet end of the first permeation pipe is communicated with the correspondingly arranged drainage through hole, and the drainage end of the first permeation pipe is inserted into the percolation layer in the percolation channel; the infiltration layer comprises a crushed stone layer and a backfill soil layer; the crushed stone layer is filled in the percolation channel; and the backfill soil layer is laid on the gravel layer, and the upper surface of the backfill soil layer is flush with the top surface of the curb stone at the curb edge, or the upper surface of the backfill soil layer is 50-100 mm away from the top surface of the curb stone at the curb edge.
Furthermore, the rainwater side drainage and permeation structure of the road surface also comprises a geotextile for preventing soil body of the roadbed from reversely permeating into the gravel layer, and the geotextile is wrapped outside the gravel layer; the drainage end of the first permeation tube penetrates through the geotextile and then extends into the gravel layer.
Further, the road surface rainwater side drainage and permeation structure further comprises a second permeation pipe used for permeating rainwater, wherein the second permeation pipe is arranged in the percolation layer in the percolation channel and extends along the length direction of the percolation channel.
According to another aspect of the present invention, there is also provided a construction method of a road surface rainwater side drainage and permeation structure, for constructing the road surface rainwater side drainage and permeation structure, comprising the following steps: constructing an inwards concave percolation channel on a roadbed base surface, wherein the percolation channel extends along the length direction of the roadbed; filling the percolation channel with a percolation material to form a percolation layer for percolating the rainwater; preparing curb stones with drainage through holes; installing curb stones on the roadbed base surface on at least one side of the infiltration trench; and filling the space formed by the infiltration ditch and the curb with infiltration materials.
Further, the step of preparing the curb stone with the drainage through holes comprises the following specific operations: drilling a drainage through hole on the curb: firstly, selecting curbstones; then, determining the height of a drainage through hole on the curb according to the thickness of a road layer laid on the roadbed base surface; secondly, marking the positions of the drill holes on the side wall surface of the curbstone according to the set distance; finally, drilling a drainage through hole on the curb stone at the curb edge; or prefabricated grate plate type kerbstones: firstly, leveling a prefabricated site, hardening the site, and simultaneously, taking drainage measures of the prefabricated site; then, customizing a shaping plastic die of the comb plate type curbstone, wherein the die is required to meet the requirements of strength, rigidity and surface smoothness required during pouring; then, after the steel bars are processed on the prefabrication site according to the requirements of drawings, pouring concrete in the shaping plastic die, and curing and forming; and finally, removing the shaped plastic mould, and stacking the shaped plastic mould in order for later use.
Further, after the step of building the infiltration ditch which is concave and extends along the length direction of the roadbed on the roadbed base surface is completed, and before the step of filling the infiltration ditch with infiltration objects to form an infiltration layer for infiltrating rainwater is carried out, the method further comprises the following steps: laying geotextile in the infiltration ditch; and after the step of filling the infiltration ditch with infiltration materials to form an infiltration layer for infiltrating rainwater is completed, the geotextile is fixed after being wrapped with the infiltration materials.
Further, after the step of mounting the kerb curbstone on the roadbed base surface at least on one side of the infiltration ditch is completed and before the step of backfilling infiltration objects in the space formed by the infiltration ditch and the kerb curbstone is carried out, the method further comprises the following steps: a first permeate tube was made and installed into the filtration layer.
The invention has the following beneficial effects:
in the road surface rainwater side drainage infiltration structure, the infiltration grooves extending along the length direction of the road base are arranged, and the space formed by the infiltration grooves and the curb stones is filled with the infiltration layer for infiltrating rainwater, a plurality of drainage through holes are sequentially arranged at intervals in the length direction of the kerbstone, and each drainage through hole is respectively communicated with the road surface and the infiltration layer, thereby leading the rainwater on the road surface to be evenly and quickly drained into the infiltration layer through the plurality of water drainage through holes, rainwater is intensively discharged through the rainwater collecting port, and when the rainwater is discharged through the plurality of water discharging through holes, the water discharging speed can be increased, meanwhile, the scouring force of the drainage on the soil body of the roadbed and the green belt is reduced, the scouring water loss of the roadbed and the green belt due to overlarge rainfall is avoided, the permeability to rainwater and the rainwater permeability rate can be increased through the arrangement of the infiltration layer, so that the utilization rate of rainwater is improved; on the other hand, the drainage through holes are distributed in the curb stones without breaking the curb stones, so that the curb stones can be continuous in the length direction, driving safety and pedestrian safety of the road are facilitated, a rainwater collecting port is not required to be arranged on the roadbed, the integrity and the stability of the roadbed protected by the curb stones are better, and the service life of the road is further prolonged;
the road surface rainwater side drainage penetration structure constructed by the construction method of the road surface rainwater side drainage penetration structure ensures that rainwater on the road surface is uniformly, dispersedly and quickly drained into the percolation layer through the plurality of drainage through holes, so compared with the prior art that rainwater is intensively drained through the rainwater collection port, the drainage speed can be increased, the scouring force of drainage on soil bodies of a roadbed and a green belt is reduced, the scouring water loss of the roadbed and the green belt due to overlarge rainfall is avoided, and the penetration rate of the rainwater can be increased through the arrangement of the percolation layer, so that the utilization rate of the rainwater is improved; the drainage through holes are distributed in the curb without breaking the curb, so that the curb can be continuous in the length direction, and traffic safety and pedestrian safety of roads are facilitated; the construction method of the rainwater side drainage and permeation structure of the pavement is simple in construction operation, high in construction efficiency and convenient to construct, and can be performed in the same period as the construction of a road layer, and a rainwater collection port is not required to be additionally arranged on a roadbed, so that the integrity and the stability of the roadbed below the curb at the curb edge are better, and the service life of the road is further prolonged.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a first schematic view of a road surface rain side drainage penetration structure of a preferred embodiment of the present invention;
FIG. 2 is a second schematic view of a road surface rain side drainage penetration structure according to a preferred embodiment of the present invention;
FIG. 3 is a front view schematic illustration of a first embodiment of the curb of FIG. 1;
FIG. 4 is a schematic top view of the structure of FIG. 3;
FIG. 5 is a front view schematic illustration of a second embodiment of the curb of FIG. 1;
fig. 6 is a schematic top view of the structure of fig. 5.
Description of the figures
10. A percolation channel; 20. a roadbed; 30. curbstones; 301. a drain through hole; 40. a road layer; 401. a pavement; 50. a percolation layer; 51. a crushed stone layer; 52. backfilling the soil layer; 60. a first permeate tube; 70. a second permeate tube; 80. curb flat stone.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a road surface rainwater side drainage and permeation structure, including: the infiltration ditch 10 is formed by the concave inner surface of the roadbed base, the infiltration ditch 10 extends along the length direction of the roadbed 20, the roadbed base at least one side of the infiltration ditch 10 is vertically provided with curb 30, the curb 30 extends along the length direction of the roadbed 20, and the space formed by the infiltration ditch 10 and the curb 30 is filled with an infiltration layer 50 for infiltrating rainwater. The curb 30 is provided with a plurality of water drainage through holes 301, the plurality of water drainage through holes 301 are arranged at intervals in sequence in the length direction of the curb 30, the water inlet end of each water drainage through hole 301 is communicated with the road surface 401 of the road layer 40 laid on the roadbed base surface, and the water drainage end of each water drainage through hole 301 is communicated with the percolation layer 50 so as to allow rainwater on the road surface 401 to seep into the percolation layer 50.
In the road surface rainwater side drainage and infiltration structure of the invention, the infiltration ditch 10 extending along the length direction of the roadbed 20 is arranged, the space formed by the infiltration ditch 10 and the curb 30 is filled with the infiltration layer 50 for infiltrating rainwater, the length direction of the curb 30 is sequentially provided with a plurality of drainage through holes 301 at intervals, and each drainage through hole 301 is respectively communicated with the road surface 401 and the infiltration layer 50, thereby leading the rainwater on the road surface to be uniformly, dispersedly and quickly drained into the infiltration layer 50 through the plurality of drainage through holes 301, compared with the prior art, the rainwater is intensively drained through a rainwater collecting port, when the rainwater is drained through the plurality of drainage through holes 301, the drainage rate can be increased, the scouring force of the drainage on the soil body of the roadbed and the green belt is reduced, the scouring water loss of the roadbed and the green belt caused by overlarge rainfall is avoided, and the infiltration rate and the rainwater infiltration rate can be increased through the arrangement of the infiltration layer 50, thereby improving the utilization rate of rainwater; on the other hand, drainage through hole 301 lays in curb 30, and need not to break off curb 30 for curb 30 can be in succession in its length direction, thereby is favorable to the driving safety and the pedestrian safety of road, and need not to set up rainwater collection mouth on road bed 20, and the wholeness and the stability of road bed 20 that make curb 30 prevent down are better, and then improve the life of road.
Alternatively, as shown in fig. 3 to 6, the drainage through holes 301 are arranged on the side wall surface of the curb 30 and vertically penetrate through the curb 30 in the thickness direction of the curb 30, and the arrangement of the drainage through holes 301 is simple in operation and easy to implement in terms of process when the drainage through holes 301 are arranged on the curb 30. Or drainage through holes 301 are arranged on the side wall surface of curb 30, and downward incline runs through curb 30 from the water inlet side to the water outlet side of curb 30, and this arrangement of drainage through holes 301 is favorable to accelerating rainwater to be drained into percolation layer 50 from road surface 401, increases the permeability and the penetration rate of rainwater, and then improves the utilization ratio of rainwater, and effectively prevents rainwater from silting up on the road surface.
Alternatively, the radial sectional shape of the drain through hole 301 is circular (as shown in fig. 3 and 4), rectangular (as shown in fig. 5 and 6), or regular polygonal. The radial cross-sectional area of the drainage through hole 301 is gradually reduced from the water inlet end to the water outlet end, and the arrangement mode of the drainage through hole 301 can accelerate the rainwater to discharge the drainage through hole 301, increase the permeability and the permeation rate of the rainwater, further improve the utilization rate of the rainwater, and effectively prevent the rainwater from silting up on the road surface.
Alternatively, as shown in fig. 3 to 6, the diameter of the drain through hole 301 is 60mm to 80 mm. The lowest point of the water inlet end of the drainage through hole 301 is 0-20 mm away from the road surface 401, so that rainwater on the road surface is completely drained into the drainage through hole 301.
Optionally, a plurality of drainage through holes 301 are uniformly arranged at intervals in the length direction of the curb 30, and the distance between two adjacent drainage through holes 301 is 300 mm-500 mm, and this arrangement of the drainage through holes 301 can make the rainwater on the road surface disperse and uniformly enter each drainage through hole 301, so as to prevent the single drainage through hole 301 from leaking too much, and further affecting the side flow of the rainwater.
Alternatively, in the first embodiment of the present invention, not shown, the percolated layer 50 comprises a crushed stone layer 51 and a backfill layer 52. The rubble layer 51 is filled in the position from the bottom of the infiltration trench 10 to 50 mm-100 mm above the drain through hole 301. The backfill layer 52 is laid on the gravel layer 51, and the upper surface of the backfill layer 52 is flush with the top surface of the curb 30, or the upper surface of the backfill layer 52 is 50-100 mm away from the top surface of the curb 30. In this embodiment, the backfill layer 52 is located above the drainage through holes 301, so as to prevent the backfill layer 52 from affecting the seepage of rainwater.
Alternatively, in the second embodiment of the present invention, as shown in fig. 1 and 2, the road surface rainwater side drainage and infiltration structure further includes a first penetration pipe 60 for penetrating rainwater, a water inlet end of the first penetration pipe 60 is communicated with a correspondingly disposed drainage through hole 301, and a drainage end of the first penetration pipe 60 is inserted into the percolation layer 50 in the percolation channel 10. The percolated layer 50 comprises a layer of crushed stone 51 and a layer of backfill 52. The crushed stone layer 51 is filled in the infiltration trench 10. The backfill layer 52 is laid on the gravel layer 51, and the upper surface of the backfill layer 52 is flush with the top surface of the curb 30, or the upper surface of the backfill layer 52 is 50-100 mm away from the top surface of the curb 30. In this embodiment, since the first penetration pipe 60 is additionally provided, the first penetration pipe 60 can rapidly introduce the rainwater discharged from the drainage through hole 301 into the infiltration layer 50 in the infiltration trench 10, and thus the infiltration trench 10 is only required to be filled with the gravel layer 51, and the drainage through hole 301 can be filled with the backfill layer 52. The first penetration pipe 60 is additionally provided, so that rainwater can be rapidly guided into the penetration layer 50 on the one hand, and the water storage space is enlarged due to the first penetration pipe 60 compared with the penetration layer 50 alone, so that rainwater permeability and rainwater permeability can be enhanced.
Optionally, not shown, the road surface rainwater side drainage and permeation structure further includes a geotextile for preventing soil of the roadbed 20 from reversely permeating into the gravel layer 51, and the geotextile is wrapped outside the gravel layer 51. Through at the outer geotechnological cloth that covers of metalling 51, can prevent effectively that the rivers in the road bed soil body or the greenbelt soil body from driving the soil body and reverse ooze to metalling 51 to reduce the permeability of metalling 51, and make everywhere permeability inhomogeneous in the metalling 51, the rainwater erodees the road bed soil body or the greenbelt soil body probably appears in the big infiltration department in metalling 51.
Optionally, as shown in fig. 1 and 2, the road surface rainwater side drainage infiltration structure further includes a second infiltration pipe 70 for infiltrating rainwater, and the second infiltration pipe 70 is arranged in the infiltration layer 50 in the infiltration trench 10 and extends along the length direction of the infiltration trench 10. Similarly, the addition of the second permeate tube 70 increases the storage volume compared to the separate permeate layer 50, thereby enhancing rain water permeability and rain water permeability.
Optionally, as shown in fig. 1 and fig. 2, the road surface rainwater side drainage and infiltration structure further includes a curb 80 laid on the subgrade base surface, the curb 80 is laid between the road layer 40 and the curb 30 on the corresponding side, two sides of the curb 80 respectively abut against the side edge of the road layer 40 and the side wall surface of the curb 30, and the curb 80 extends along the length direction of the subgrade 20. The upper surface of the curb stone 80 is flush with the road surface 401 of the road layer 40. Further, as shown in fig. 1 and 2, a cement stabilization layer having high water permeability is laid on the roadbed base surface, and the road layer 40, the curb stone 80, and the curb stone 30 are all disposed on the cement stabilization layer.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a construction method of a road surface rainwater side drainage and permeation structure, for constructing the road surface rainwater side drainage and permeation structure, including the following steps:
an infiltration ditch 10 which is concave and extends along the length direction of the roadbed 20 is constructed on the roadbed basal plane.
The infiltration trenches 10 are filled with an infiltration material to form an infiltration layer 50 for infiltrating rainwater.
The kerb 30 having the drainage through-holes 301 is prepared.
And (3) backfilling the infiltration substance in the space formed by the infiltration ditch 10 and the curb 30.
The road surface rainwater side drainage penetration structure constructed by the construction method of the road surface rainwater side drainage penetration structure ensures that rainwater on the road surface is uniformly, dispersedly and quickly drained into the infiltration layer 50 through the plurality of drainage through holes 301, so compared with the prior art that rainwater is intensively drained through a rainwater collection port, when the rainwater is drained through the plurality of drainage through holes 301, the drainage rate can be increased, the scouring force of drainage on soil bodies of a roadbed and a green belt is reduced, the scouring water loss of the roadbed and the green belt due to overlarge rainfall is avoided, and the penetration rate of the rainwater and the rainwater penetration rate can be increased through the arrangement of the infiltration layer 50, so that the utilization rate of the rainwater is improved; the drainage through holes 301 are arranged in the curbstones 30 without breaking the curbstones 30, so that the curbstones 30 can be continuous in the length direction thereof, thereby being beneficial to traffic safety and pedestrian safety of roads; the construction method of the rainwater side drainage and permeation structure of the pavement is simple in construction operation, the construction is carried out in the same period as the construction of the road layer 40, the construction efficiency is high, the construction is convenient, and a rainwater collecting port is not required to be additionally arranged on the roadbed 20, so that the integrity and the stability of the roadbed 20 below the curb 30 of the curb are better, and the service life of the road is further prolonged.
Alternatively, as shown in fig. 1 and 2, the step of "building the infiltration trench 10 which is concave on the subgrade base surface and extends along the length direction of the subgrade 20" is specifically operated as follows:
measuring and lofting: after the roadbed is filled to the designed elevation of the top of the percolation trench 10, construction measurement paying-off is carried out according to a percolation trench construction plane positioning layout, the position of the percolation trench 10 is marked on the roadbed base surface, and the grooving width and depth are determined according to the percolation trench design drawing and the soil texture condition;
digging a groove: after measurement and paying off, a percolation trench is excavated mechanically, the depth is controlled by the detection elevation of a measurer, and after the percolation trench is excavated to reach the designed depth, the trench bottom soil foundation is tamped manually by matching a frog ramming machine.
Alternatively, as shown in fig. 1 and 2, the step "preparing the kerb 30 with the drainage through-holes 301" is specifically performed as follows:
drilling a drainage through hole 301 on the curb 30: first, the curbstone 30 is picked. Then, the height of the drainage through-hole 301 is determined on the curb 30 according to the thickness of the road layer laid on the roadbed base surface. Next, the positions of the drilled holes are marked on the side wall surface of the curbstone 30 at set intervals. Finally, a drainage through hole 301 is drilled in the curbstone 30. Specifically, the height from the lowest point of the water inlet end of the drainage through hole 301 to the road surface 401 of the road layer 40 is generally 0-20 mm, and the drainage through hole 301 is uniformly processed on the side wall surface of the curb 30 at the interval of 300-500 mm; when drilling, the drill is generally drilled by a water mill drill of a cylinder type drill bit with the outer diameter of 60 mm-80 mm. Or
Prefabricated grate plate type curbstone 30: firstly, leveling a prefabricated site, hardening the site, and simultaneously, taking drainage measures of the prefabricated site. Then, a shaping plastic die of the comb plate type curbstone 30 is customized, and the die needs to meet the requirements of strength, rigidity and surface smoothness required during pouring. And then, after the steel bars are processed on the prefabrication site according to the requirements of drawings, pouring concrete in the shaping plastic die, and curing and forming. And finally, removing the shaped plastic mould, and stacking the shaped plastic mould in order for later use.
Preferably, after the step of "building the infiltration ditch 10 recessed on the subgrade base surface and extending along the length direction of the subgrade 20" is completed, and before the step of "filling the infiltration ditch 10 with infiltration substance to form the infiltration layer 50 for infiltrating rainwater" is performed, the method further comprises the following steps:
geotextile is laid in the infiltration ditch 10.
And after the step of filling the infiltration trench 10 with the infiltration material to form the infiltration layer 50 for infiltrating rainwater is completed, the geotextile is wrapped with the infiltration material and fixed.
Specifically, the specific operation of the step "laying geotextile in the infiltration ditch 10" is as follows: the geotextile is manually laid in the infiltration ditch 10, when the geotextile is laid, a certain geotextile turned edge needs to be left on the roadbed basal planes at two sides of the infiltration ditch 10, when the geotextile is lapped, at least 30cm of lapping width needs to be left to ensure the filtering effect, and when the geotextile is laid, a proper fixing measure needs to be taken to prevent the geotextile from moving when the infiltration material is filled.
Further, as shown in fig. 1 and 2, after the step of "laying geotextile in the infiltration ditch 10" is completed, and when the step of "filling infiltration material in the infiltration ditch 10 to form the infiltration layer 50 for infiltrating rainwater" is performed, the method further comprises the steps of: a second permeate tube 70 is fabricated and the second permeate tube 70 is embedded in the permeate of the filtration raceway 10.
Alternatively, as shown in fig. 1 and 2, after the step of "installing the kerb curbstone 30 on the roadbed surface on at least one side of the infiltration trench 10" is completed, and before the step of "backfilling the infiltration object in the space formed by the infiltration trench 10 and the kerb curbstone 30" is performed, the method further includes the steps of:
a first permeate tube 60 is fabricated and the first permeate tube 60 is installed into the percolated layer 50.
Specifically, firstly, selecting a PVC pipe with the diameter of 50 mm-75 mm, and performing bidirectional staggered punching by using an electric drill to form a first permeation pipe 60; the water inlet end of the manufactured first penetration pipe 60 is then connected to the drainage through-hole 301 of the curbstone 30, and the drainage end of the first penetration pipe 60 is inserted into the percolation layer 50 inside the percolation trench 10 after passing through the geotextile.
Preferably, the step of "mounting the curb 30 on the roadbed on at least one side of the infiltration trench 10" is performed by mounting the curb 30 on the roadbed on at least one side of the infiltration trench 10, and simultaneously mounting the curb 80 on the roadbed on the same side of the infiltration trench 10 with the side edges of the curb 80 abutting against the side wall surfaces of the curb 30.
Preferably, the step of "backfilling the infiltration trench 10 and the curb 30 with infiltration material" is performed while paying attention to the protection of the finished first infiltration pipe 60, and manually ramming the first infiltration pipe 60 within 300mm of its circumference without using mechanical rolling to damage the first infiltration pipe 60.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A side drainage and permeation structure for rainwater on a road surface is characterized in that,
the infiltration ditch comprises an infiltration ditch (10) formed by recessing a roadbed base surface, wherein the infiltration ditch (10) extends along the length direction of a roadbed (20), curb stones (30) are vertically erected on the roadbed base surface on at least one side of the infiltration ditch (10), the curb stones (30) extend along the length direction of the roadbed (20), and an infiltration layer (50) for infiltrating rainwater is filled in a space formed by the infiltration ditch (10) and the curb stones (30);
the kerbstone is characterized in that a plurality of drainage through holes (301) are formed in the kerbstone (30), the drainage through holes (301) are sequentially distributed in the length direction of the kerbstone (30) at intervals, the water inlet ends of the drainage through holes (301) are communicated with a road surface (401) of a road layer (40) laid on the roadbed base surface, and the drainage ends of the drainage through holes (301) are communicated with the percolation layer (50) so that rainwater on the road surface (401) can seep into the percolation layer (50).
2. The road surface rainwater side drainage penetration structure according to claim 1,
the drainage through holes (301) are arranged on the side wall surface of the kerb curbstone (30) and vertically penetrate through the kerb curbstone (30) along the thickness direction of the kerb curbstone (30); or
The drainage through holes (301) are arranged on the side wall surface of the kerb curbstone (30) and downwards penetrate through the kerb curbstone (30) along the direction from the water inlet side to the water outlet side of the kerb curbstone (30).
3. The road surface rainwater side drainage penetration structure according to claim 2,
the radial cross section of the drainage through hole (301) is circular, rectangular or regular polygon, and the radial cross section area of the drainage through hole (301) is gradually reduced from the water inlet end to the water outlet end;
the diameter of the drainage through hole (301) is 60-80 mm, and the distance between the lowest point of the water inlet end of the drainage through hole (301) and the road surface (401) is 0-20 mm.
4. The road surface rainwater side drainage penetration structure according to claim 1,
the road surface rainwater side drainage and permeation structure further comprises a first permeation pipe (60) for permeating rainwater, the water inlet end of the first permeation pipe (60) is communicated with the drainage through hole (301) which is correspondingly arranged, and the water drainage end of the first permeation pipe (60) is inserted into the infiltration layer (50) in the infiltration ditch (10);
the infiltration layer (50) comprises a gravel layer (51) and a backfill layer (52);
the gravel layer (51) is filled in the percolation channel (10);
the backfill soil layer (52) is laid on the gravel layer (51), the upper surface of the backfill soil layer (52) is flush with the top surface of the curb stone (30), or the upper surface of the backfill soil layer (52) is 50-100 mm away from the top surface of the curb stone (30).
5. The road surface rainwater side drainage penetration structure according to claim 4,
the road surface rainwater side drainage and permeation structure further comprises a geotextile for preventing soil bodies of the roadbed (20) from reversely permeating into the gravel layer (51), and the geotextile is wrapped outside the gravel layer (51);
the drainage end of the first permeation tube (60) penetrates through the geotextile and then extends into the gravel layer (51).
6. The road surface rainwater side drainage penetration structure according to claim 1,
the road surface rainwater side drainage and permeation structure further comprises a second permeation pipe (70) used for permeating rainwater, wherein the second permeation pipe (70) is arranged in the infiltration layer (50) in the infiltration ditch (10) and extends along the length direction of the infiltration ditch (10).
7. A construction method of a road surface rainwater side drainage and permeation structure, which is used for constructing the road surface rainwater side drainage and permeation structure according to any one of claims 1 to 6, and comprises the following steps:
constructing an inward-concave percolation channel (10) on a roadbed base surface and extending along the length direction of a roadbed (20);
-filling said percolation trenches (10) with percolated material so as to form a percolation layer (50) for percolating the rainwater;
preparing a curb stone (30) having a drainage through-hole (301);
-mounting the kerb (30) on the subgrade base of at least one side of the infiltration trench (10);
and filling infiltration materials back into the space formed by the infiltration ditch (10) and the curb stones (30).
8. The construction method of a road surface rainwater side drainage and infiltration structure according to claim 7, wherein the step of "preparing a curbstone (30) having a drainage through hole (301)" is specifically operated as:
-drilling the drainage through holes (301) on the kerbstones (30): firstly, selecting the kerbstone (30); then, determining the height of the drainage through hole (301) on the kerb (30) according to the thickness of a road layer laid on the roadbed base surface; then, marking the positions of the drill holes on the side wall surface of the curb stone (30) according to the set distance; finally, drilling the drainage through holes (301) on the kerb curbstone (30); or
Prefabricated grate plate curbstone (30): firstly, leveling a prefabricated site, hardening the site, and simultaneously, taking drainage measures of the prefabricated site; then, a shaping plastic die of the comb plate type curbstone (30) is customized, and the die is required to meet the requirements of strength, rigidity and surface smoothness required during pouring; then, after the steel bars are processed on the prefabrication site according to the requirements of drawings, pouring concrete in the shaping plastic die, and curing and forming; and finally, removing the shaped plastic mould, and stacking the shaped plastic mould in order for later use.
9. The construction method of a road surface rainwater side drainage infiltration structure according to claim 7, characterized in that after the step of building the infiltration trench (10) which is concave and extends along the length direction of the roadbed (20) on the roadbed base surface is completed, and before the step of filling the infiltration trench (10) with infiltration material to form the infiltration layer (50) for infiltrating rainwater is performed, the construction method further comprises the steps of:
laying geotextile in the infiltration ditch (10);
and after the step of filling the infiltration ditch (10) with infiltration materials to form an infiltration layer (50) for infiltrating rainwater is completed, the geotextile is reversely wrapped with the infiltration materials and then fixed.
10. The construction method of a road surface rainwater side drainage infiltration structure according to claim 9, characterized in that after the step of mounting the kerb curbs (30) on the roadbed at least one side of the infiltration trench (10) is completed, and before the step of backfilling infiltration objects in the space formed by the infiltration trench (10) and the kerb curbs (30) is performed, the construction method further comprises the steps of:
-making a first permeate tube (60) and installing said first permeate tube (60) into said percolated layer (50).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010400445.4A CN111560815A (en) | 2020-05-13 | 2020-05-13 | Road surface rainwater side drainage permeation structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010400445.4A CN111560815A (en) | 2020-05-13 | 2020-05-13 | Road surface rainwater side drainage permeation structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186778A (en) * | 2021-05-07 | 2021-07-30 | 贵州省遵义公路管理局 | Road surface rainwater concealed type permeation structure and construction process |
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| CN103103905A (en) * | 2011-11-11 | 2013-05-15 | 上海市政工程设计研究总院（集团）有限公司 | Road pavement draining method and drainage structure system |
| CN210066409U (en) * | 2019-05-10 | 2020-02-14 | 上海科苑景观工程设计有限公司 | Car road grass planting ditch system |
| CN212505697U (en) * | 2020-05-13 | 2021-02-09 | 湖南省第三工程有限公司 | Road surface rainwater side drainage permeation structure |
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| FR2704878A1 (en) * | 1993-05-07 | 1994-11-10 | Cochery Bourdin Chausse | Device for collecting rainwater for a draining roadway |
| CN103103905A (en) * | 2011-11-11 | 2013-05-15 | 上海市政工程设计研究总院（集团）有限公司 | Road pavement draining method and drainage structure system |
| CN210066409U (en) * | 2019-05-10 | 2020-02-14 | 上海科苑景观工程设计有限公司 | Car road grass planting ditch system |
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| CN113186778A (en) * | 2021-05-07 | 2021-07-30 | 贵州省遵义公路管理局 | Road surface rainwater concealed type permeation structure and construction process |
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