CN218090331U

CN218090331U - Town road structure

Info

Publication number: CN218090331U
Application number: CN202222217170.8U
Authority: CN
Inventors: 陈丁力; 李康均; 沈晓荣; 骆育真; 许峥; 张敏
Original assignee: PowerChina Huadong Engineering Corp Ltd
Current assignee: PowerChina Huadong Engineering Corp Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-20
Anticipated expiration: 2032-08-23

Abstract

The utility model relates to a town road structure. Is suitable for the technical field of municipal road engineering. The utility model adopts the technical proposal that: the utility model provides a town road structure, has road main part and arranges the recessed formula greenery patches in road main part both sides, is equipped with the curb structure of constituteing by a plurality of conventional curb along road main part length direction, its characterized in that in road main part both sides: and a channel for communicating the road main body with the recessed greenbelt is arranged at each certain distance on the kerbstone structure, a dirt blocking filter tank is formed by excavating the recessed greenbelt at the position corresponding to the channel, and a filter layer is filled in the dirt blocking filter tank. Therefore, the problem of pretreatment of the municipal road initial runoff rainwater is well solved, the existing drainage runoff organization system is kept unchanged, the initial runoff is intercepted, permeated and stored through the filter tank, and the overproof rainwater is drained into the sunken green land in an overflow mode.

Description

Town road structure

Technical Field

The utility model relates to a town road structure. Is suitable for the technical field of municipal road engineering.

Background

Since the construction of 'sponge cities' is proposed, low-impact development means are increasingly adopted in the construction of municipal infrastructures. In the municipal road engineering construction, a permeable ground method is adopted for sidewalks and non-motor lanes, the bearing capacity requirement of motor lanes is high, conventional permeable asphalt, permeable concrete and other materials are difficult to meet the use requirement, most of projects still adopt the conventional road surface method, and therefore concave greenbelts are required to be arranged at the positions of a central isolation belt, a motor/non-motor isolation belt and the like to regulate, store and purify road surface path flow.

At present, in the design of a sunken greenbelt in municipal road engineering, a motor vehicle lane curb stone is perforated or laid down mostly, and rainwater is guided to enter the greenbelt to be absorbed. However, the initial rainwater pollutants in the motor vehicle lane are high, and the initial runoff rainwater of the vehicle lane without purification treatment is not beneficial to the growth of plants on green lands after directly entering the green lands. Greenbelts on two sides of the municipal road are washed under the rainwater washing effect and the poor water and soil conservation effect provided by fewer plants, so that the attractiveness of the municipal road is greatly influenced. How to realize the preliminary treatment of initial runoff through low influence development means is the key problem that needs to be considered in municipal road sponge city design.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the technical problem, the utility model provides a block dirty filter-tank through setting up and realize filtering purification to the initial stage runoff, promote recessed greenery patches plant survival rate, reduce the town road structure of management maintenance expense.

The utility model adopts the technical proposal that: the utility model provides a town road structure, has the road main part and arranges the recessed formula greenery patches in road main part both sides, is equipped with the curb structure of constituteing by a plurality of conventional curbstones, its characterized in that along road main part length direction in road main part both sides: and a channel for communicating the road main body with the recessed greenbelt is arranged at each certain distance on the kerbstone structure, a dirt blocking filter tank is formed by excavating the recessed greenbelt at the position corresponding to the channel, and a filter layer is filled in the dirt blocking filter tank. Therefore, in the raining process, the initial rainwater collecting more pollutants on the road body flows into the trash holding filter tank through the channel, and the initial rainwater in the trash holding filter tank permeates into the downward-concave green land after being filtered by the filter layer. Along with the continuation of rainfall, the water storage capacity reaches the saturation in the trash filter tank, also only has less pollutant in the later stage rainwater that flows out from the road main part this moment, and in the later stage rainwater that flows out from the road main part this moment permeates to recessed formula greenery patches through in the trash filter tank, most later stage rainwater was through trash filter tank top overflow to recessed formula greenery patches.

The conventional kerbstone at the formation of the passageway on the kerbstone structure is laid down to a position flush with the road body as a down-lying type kerbstone. So, form the passageway after the conventional curb anchor that will separate the certain distance forms the passageway after ground, avoid drilling formation passageway on conventional curb, the construction volume that has significantly reduced.

The filter layer is provided with a composite sand base layer paved on the inner wall of the trash blocking filter tank and a geotextile trash blocking bag paved on the composite sand base layer. Thus, the initial rainwater flowing into the trash holding filter tank from the road body is effectively filtered, and the influence of impurities in the initial rainwater on plants in the concave green land caused by the impurities flowing into the concave green land is greatly reduced.

The geotextile sewage intercepting bag is uniformly provided with a plurality of geotextile fixing holes, and the geotextile sewage intercepting bag is provided with anchor bolts which penetrate through the geotextile fixing holes and are anchored into the composite sand base layer. Therefore, the geotextile dirt intercepting bag is convenient to be fixedly installed on the composite sand base layer, and the geotextile dirt intercepting bag is prevented from being washed down by rainwater.

Be equipped with the slope towards trash rack filter tank on the type of sleeping in curb top surface down, the slope ratio on slope is 1:20. so, be convenient for rainwater on the road main part flows into in blocking dirty filter-tank.

The size of the trash blocking filter tank is not less than 500mm multiplied by 300mm multiplied by 150mm, the distance between every two adjacent trash blocking filter tanks is not more than 10m, and the elevation of the top surface of each trash blocking filter tank is 50mm lower than that of the top surface of the lower horizontal curb. Therefore, the initial rainwater flowing down from the road main body can conveniently flow into the trash blocking filter tank.

The water permeability coefficient of the composite sand base layer is not less than 1.5 multiplied by 10 ^-2 cm/s, and the compressive strength of the composite sand base layer is not less than 25MPa. So, compound sand basic unit has good water permeability under good scour prevention performance.

The vertical permeability coefficient of the geotextile dirt intercepting bag is not less than 1.5 multiplied by 10 ^-2 cm/s, and the unit area mass of the geotextile dirt-intercepting bag is 300g/m ² . Thus, the geotextile dirt intercepting bag has good water permeability.

And a broken stone cushion layer is laid below the composite sand base layer in the sewage blocking filter tank. So, the rubble bed course of laying makes level when mating formation to compound sand base course and has played good complementary action, has effectively avoided the differential settlement of compound sand base course, has played certain regulation filtering capability simultaneously.

The utility model has the advantages that: the utility model discloses a compound sand base blocks dirty filter-tank and geotechnological cloth and cuts dirty bag and arrange, has solved the difficult problem of municipal road initial stage runoff rainwater preliminary treatment betterly, keeps current drainage runoff organization system unchangeable, and the initial stage runoff passes through the filter-tank interception, permeates, the regulation, and the rainwater that exceeds standard passes through the overflow form and discharges into recessed formula greenery patches. The drainage mode can deposit large-volume pollutants (garbage, leaves and the like) in the filter tank, is convenient to clean, and can effectively reduce the concentration of runoff pollutants entering the concave green land, improve the survival rate of plants in the concave green land and reduce the management and maintenance cost.

Drawings

Fig. 1 is a floor plan of an embodiment.

FIG. 2 isbase:Sub>A sectional view taken along line A-A of the embodiment.

FIG. 3 is a sectional view taken along line B-B of the embodiment.

In the figure: 1. a conventional curb; 2. a lower lying curb; 3. a trash blocking filter tank; 4. fixing holes for geotextile; 5. a recessed greenery; 6. a geotextile sewage intercepting bag; 7. a composite sand base layer; 8. and (5) a gravel cushion layer.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present invention and are not intended to limit the present invention.

The utility model relates to a town road structure has the road main part of laying on recessed greenery patches 5. And two sides of the road main body are uniformly provided with a kerbstone structure formed by splicing a plurality of conventional kerbstones 1.

In this embodiment, when the conventional kerbs 1 are anchored to both sides of the road body, the lower lying type kerbs 2 are formed after one of the conventional kerbs 1 is completely laid down into the road body, and a passage for guiding rainwater from the road body to the recessed greenbelts 5 appears between the lower lying type kerbs 2 and the conventional kerbs 1 on both sides of the lower lying type kerbs 2 due to a height difference. And laying the conventional kerbstone 1 at a distance of not more than 10m from the lower horizontal kerbstone into the road body to form a lower horizontal type kerbstone 2. In this embodiment, the conventional kerbstone 1 has a length of 500mm, a width of 150mm and a height of 420mm. The depth of the conventional kerbstone 1 anchored into the road body is 220mm, and the depth of the downward lying type kerbstone 2 anchored into the road body is 420mm.

Further, in this embodiment, a slope facing the trash rack filter tank 3 is provided on the top surface of the lower lying type curb 2, and the slope ratio of the slope is 1:20. so, be convenient for rainwater on the road body through the slope of 2 tops of the type of sleeping on curb down flow on recessed greenery patches 5.

In this embodiment, a dirt blocking filter tank 3 is excavated in the concave greenbelt 5 at a position corresponding to the lower lying type curb 2, the dirt blocking filter tank 3 has a length of 600mm, a width of 400mm and a depth of 200mm, and the elevation of the top surface of the dirt blocking filter tank 3 is 50mm lower than that of the lower lying type curb 2. And the inner side wall of the sewage blocking filter tank 3 and the ground are paved with a composite sand base layer 7 with the thickness of 50mm. And the geotextile dirt intercepting bag 6 is paved on the composite sand base layer 7. Wherein the water permeability coefficient of the composite sand base layer 7 is not less than 1.5 multiplied by 10 ^-2 cm/s, the compressive strength of the composite sand base layer 7 is not less than 25MPa; the vertical permeability coefficient of the geotextile dirt intercepting bag 6 is not less than 1.5 multiplied by 10 ^-2 cm/s, and the mass per unit area of the geotextile dirt-intercepting bag 6 is 300g/m ² . Thus, in the early stage of rainfall, the initial rainwater flows into the trash filter tank 3 from the road body through the channel formed by the lower horizontal type curb stone 2, and under the action of the geotextile trash bag 6 and the composite sand base layer 7, the initial rainwater is filtered and purified and then permeates into the recessed greenbelt 5 from the trash filter tank 3; in the middle and later periods of rainfall, the impurities and pollutants in the rainwater flowing down from the road main body are less, and the overproof runoff overflows to the concave green land 5 through the top of the trash holding filter tank 3.

Further, in order to facilitate leveling when the composite sand base layer 7 is paved in the sewage blocking filter tank 3, and before the composite sand base layer 7 is paved in the sewage blocking filter tank 3, a gravel cushion layer 8 is paved in the sewage blocking filter tank 3. Play firm effect to the compound sand basic unit 7 of mating formation in blocking dirty filter tank 3, reduce the differential settlement of compound sand basic unit 7, still play the regulation simultaneously and filter the effect.

In this embodiment, the geotextile dirt intercepting bags 6 laid on the composite sand base layer 7 are uniformly provided with a plurality of geotextile fixing holes 4 at the positions of the top surfaces around the composite sand base layer 7. So, through passing geotechnological cloth fixed orifices 4 with the crab-bolt and go into compound sand basic unit 7 with the crab-bolt anchor in, avoid geotechnological cloth to cut dirty bag 6 and walk by rainwash.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a town road structure, has road main part and arranges recessed formula greenery patches (5) in road main part both sides, is equipped with the curb structure of constituteing by a plurality of conventional curbstones (1) along road main part length direction, its characterized in that in road main part both sides: a channel communicated with a road main body and a concave greenbelt (5) is arranged at each certain distance on the kerbstone structure, a trash blocking filter tank (3) is excavated at a position corresponding to the channel on the concave greenbelt (5), and a filter layer is filled in the trash blocking filter tank (3).

2. A town road structure according to claim 1, wherein: a conventional kerbstone (1) at a formation passage on a kerbstone structure is laid down as a down-lying type kerbstone (2) to a position flush with a road body.

3. A town road structure according to claim 1, wherein: the filter layer is provided with a composite sand base layer (7) paved on the inner wall of the trash blocking filter tank (3) and a geotextile trash blocking bag (6) paved on the composite sand base layer (7).

4. A town road structure according to claim 3, wherein: evenly open on geotechnological cloth cuts dirty bag (6) and has a plurality of geotechnological cloth fixed orificess (4), install on geotechnological cloth cuts dirty bag (6) and passes geotechnological cloth fixed orifices (4) and anchor the crab-bolt in compound sand basic unit (7).

5. A town road structure according to claim 2, wherein: be equipped with the slope towards trash rack filter tank (3) on decurrent type curb (2) top surface, the slope ratio on slope is 1:20.

6. a town road structure according to claim 2, wherein: the size of the trash blocking filter tanks (3) is not less than 500mm multiplied by 300mm multiplied by 150mm, the distance between every two adjacent trash blocking filter tanks (3) is not more than 10m, and the elevation of the top surfaces of the trash blocking filter tanks (3) is lower than 50mm of the top surfaces of the lower horizontal type curb stones (2).

7. A town road structure according to claim 3, wherein: the water permeability coefficient of the composite sand base layer (7) is not less than 1.5 multiplied by 10 ^-2 cm/s, and the compressive strength of the composite sand base layer (7) is not less than 25MPa.

8. A town road structure according to claim 3, wherein: the vertical permeability coefficient of the geotextile dirt intercepting bag (6) is not less than 1.5 multiplied by 10 ^-2 cm/s, and the mass per unit area of the geotextile dirt-intercepting bag (6) is 300g/m ² 。

9. A town road structure according to claim 3, wherein: a broken stone cushion layer (8) is laid below the composite sand base layer (7) in the dirt blocking and filtering tank (3).