CN-224213066-U - Urban road asphalt pavement's off-set ditch drainage system

Abstract

The utility model relates to the technical field of urban road drainage, in particular to a diversion drainage system for an urban road asphalt pavement. The urban road asphalt pavement's devision drainage system includes the devision main part of the cast-in-place devision of asphalt concrete that permeates water (1), the top of devision main part is unanimous with the road surface design elevation, the inside of devision main part sets up the drain pipe that punches along the road vertically, namely punches double-walled bellows (2), the bottom surface of devision main part vertically sets up the longitudinal slope, double-walled bellows (2) link to each other with rainwater receipts well in the inside bottom surface minimum of devision main part, discharge into rainwater house steward (12) through rainwater well's transverse connection pipe (11). The system has the characteristics of high drainage efficiency (the heavy rain subsidence time is less than or equal to 10 min), convenient construction (no complex elevation adjustment) and excellent economical efficiency (the manufacturing cost is reduced by 25%), and is suitable for the drainage reconstruction engineering of urban arterial roads and overpass ramps.

Inventors

• LU YANQI

Assignees

• 陆延棋

Dates

Publication Date

20260508

Application Date

20250519

Claims (7)

1. 1. A ditch drainage system of an urban road asphalt pavement is characterized in that, The urban road asphalt pavement's devision drainage system includes the devision main part of the cast-in-place devision of asphalt concrete that permeates water (1), the top of devision main part is unanimous with the road surface design elevation, the inside of devision main part sets up the drain pipe that punches along the road vertically, namely punches double-walled bellows (2), the bottom surface of devision main part vertically sets up the longitudinal slope, double-walled bellows (2) link to each other with rainwater receipts well in the inside bottom surface minimum of devision main part, discharge into rainwater house steward (12) through rainwater well's transverse connection pipe (11).
2. 2. The urban road asphalt pavement deflection ditch drainage system according to claim 1, wherein the lowest part of the deflection ditch main body of the permeable asphalt concrete cast-in-situ deflection ditch (1) is provided with a rain water grate (10), and the rain water grate (10) can further improve the drainage capacity in the case of heavy rain.
3. 3. The off-ditch drainage system of the urban road asphalt pavement according to claim 1, wherein the off-ditch main body of the permeable asphalt concrete cast-in-situ off-ditch (1) is wrapped with waterproof geotextile (3), and the waterproof geotextile (3) can prevent rainwater from seeping into the pavement.
4. 4. The urban road asphalt pavement deflection ditch drainage system according to claim 1, characterized in that the deflection ditch main body of the permeable asphalt concrete cast-in-situ deflection ditch (1) is normally provided with a curb (4) near the sidewalk side.
5. 5. The urban road asphalt pavement partial ditch drainage system according to claim 1, wherein the porosity of the pervious asphalt concrete is 20% -25%, and the water permeability coefficient is more than or equal to 1.5×10 -2 cm/s.
6. 6. The urban road asphalt pavement partial ditch drainage system according to claim 1, wherein the waterproof geotechnical cloth layer is made of polypropylene filament material, and the unit area mass is more than or equal to 300 g/m 2 .
7. 7. The urban road asphalt pavement partial-ditch drainage system of claim 1, wherein the bottom surface of the partial-ditch main body is longitudinally provided with a longitudinal slope greater than 0.3%.

Description

Urban road asphalt pavement's off-set ditch drainage system Technical Field The utility model relates to the technical field of urban road drainage, in particular to a diversion drainage system for an urban road asphalt pavement. Background In areas where the topography is relatively flat, small longitudinal slopes are often encountered when new or retrofitted to existing urban roads. According to the regulations in the urban road route design Specification (CJJ 193-2012), if a particularly difficult longitudinal slope is encountered, the slope of which is less than 0.3%, the designer should consider setting up zigzag-shaped grooves or taking other effective drainage measures. In order to improve the drainage capacity of roads, common methods include providing zigzag-shaped gutters and increasing the density of gullies. According to the guidance of the outdoor drainage design standard (GB 50014-2021), the spacing of the gullies is usually recommended to be between 25 and 50 meters. However, when the interval of the gully is shortened to 25 meters for encryption setting, this will result in a significant increase in the engineering amount of the rainwater pipeline and the manhole. Nevertheless, the effect of this approach on the longitudinal drainage of the road is not obvious, and may be very slight. According to the proposal of the urban road pavement design rule (CJJ 169-2012), when the longitudinal gradient of the road side edge line is less than 0.3 percent, the saw-tooth-shaped offset grooves can be arranged within the width range of 0.3 meter of the road side pavement edges at both sides of the road. However, in the actual construction process, since the width of the conventional zigzag-shaped offset groove is only 30 cm, the width is relatively narrow, and the elevation change is not consistent with the elevation of the road surface, which brings about difficulty in implementation to the construction unit. Because it is difficult to construct according to the design drawing strictly, often can lead to the road surface drainage not smooth, and then easily form ponding on the road. On the 21 st 2025, on the basis of "road and asphalt and road surface and ditch and drainage" as abstract keywords, synonym expansion is checked and allowed, and searching is carried out in a Chinese patent publication database, and related documents are not found. No relevant documents were found on the Chinese knowledge network by the abstract search of "road and asphalt and road surface and ditch and drainage" on day 21 of 2025, 04. No relevant documents are found on the website of the United states patent and trademark office by "head WITH ASPHALT WITH PAVEMENT WITH SIDE DITCH WITH DRAINAGE" on month 21 of 2025, and the search website https:// ppubes. No relevant literature was found by searching at WIPO https:// patent tscope2.WIPO. Int/at 21, 2025, 04. No relevant documents were found by searching on the net https:// www.j-platpat.inpit.go.jp/in the Japanese franchise at "head AND ASPHALT AND PAVEMENT AND SIDE DITCH AND DRAINAGE" at month 21 of 2025. Disclosure of utility model The utility model aims to provide a ditch drainage system of an urban road asphalt pavement with better effect, and the specific purpose is to realize a plurality of substantial technical effects of the specific implementation part. In order to achieve the above purpose, the utility model adopts the following technical scheme: a ditch drainage system of an urban road asphalt pavement is characterized in that, The urban road asphalt pavement's devision drainage system includes the devision main part of the cast-in-place devision 1 of permeable asphalt concrete, the top of devision main part is unanimous with the road surface design elevation, the inside of devision main part sets up the drain pipe that punches along the road vertically and punches double-walled bellows 2 promptly, the bottom surface of devision main part sets up the longitudinal slope vertically, double-walled bellows 2 links to each other with rainwater receipts well in the inside bottom surface lowest department of devision main part, is discharged into rainwater house steward 12 through rainwater well's transverse connection pipe 11. The utility model further adopts the technical scheme that the lowest part of the main body of the permeable asphalt concrete cast-in-situ drift 1 is provided with the rainwater grate 10, and the rainwater grate 10 can further improve the drainage capacity in heavy rain. The utility model further adopts the technical scheme that the waterproof geotechnical cloth 3 is wrapped on the diversion trench main body of the permeable asphalt concrete cast-in-situ diversion trench 1, and the waterproof geotechnical cloth 3 can prevent rainwater from penetrating to the road surface. The utility model further adopts the technical scheme that a curb 4 is normally arranged on one side of a side ditch main body of the permeable asphalt concrete cast-in-situ side