CN216040484U

CN216040484U - Drainage structure of annular intersection

Info

Publication number: CN216040484U
Application number: CN202122331930.3U
Authority: CN
Inventors: 蒋远浩; 王兆宇; 王阳
Original assignee: Wisdri Engineering and Research Incorporation Ltd; Wisdri Urban Construction Engineering Technology Co Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd; Wisdri Urban Construction Engineering Technology Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-15
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a drainage structure of a circular intersection, which comprises a drainage ditch and a plurality of standing stones arranged along the edge of a central circular island of the circular intersection, wherein the standing stones are provided with drainage holes, the drainage ditch is arranged between the central circular island and the standing stones and is arranged along the edge of the central circular island, the drainage ditch is arranged on the drainage side of the drainage holes, and the drainage holes of the standing stones are provided with filter screens. The utility model prevents the lane of the circular cross slope towards the central circular island from generating water accumulation after precipitation, ensures the driving safety and prevents the road surface structure from generating water damage.

Description

Drainage structure of annular intersection

Technical Field

The utility model relates to the technical field of road engineering, in particular to a drainage structure for an annular intersection.

Background

The roundabout is a crossing that is applicable to many roads and crosses, and the roundabout cross section should be designed into the double-sided slope that uses the roundabout central line as the road crest line, if do not set up drainage structures near central island one side, near the roundabout central line vertical section minimum, produces the ponding of large tracts of land easily after the precipitation, not only influences driving safety, and long this past still causes the damage of road surface structure water easily. Therefore, it is necessary to provide a reasonable drainage structure at the roundabout.

Disclosure of Invention

The utility model aims to solve the technical problem that in order to overcome the defects in the prior art, the drainage structure for the roundabout intersection is provided, so that accumulated water generated after precipitation of a lane of a roundabout cross slope facing a central roundabout is avoided, the driving safety is guaranteed, and the water damage of a road surface structure is prevented.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a drainage structure of a circular intersection comprises a drainage ditch and a plurality of standing stones arranged along the edge of a central circular island of the circular intersection, wherein the standing stones are provided with drainage holes; and sundries in the central roundabout are prevented from polluting the road surface.

According to the technical scheme, the number of the drilled holes of each stone station is not more than 2.

According to the technical scheme, the diameter d of the drain hole is 12-16 cm; the specific diameter can be adjusted according to field drilling equipment and water accumulation conditions.

According to the technical scheme, the bottom elevation of the drain hole is lower than the elevation of the road surface, and the top surface of the drainage ditch is lower than the elevation of the drain hole.

According to the technical scheme, the filter screen is made of permeable geotextile, the permeable geotextile is adhered to the inner side surface of the standing stone, and the drainage side of the drainage hole is covered; the inner side surface of the standing stone refers to the surface close to the drainage ditch and one side of the central annular island.

According to the technical scheme, the length and width of the permeable geotextile are more than 10cm larger than the diameter of the drainage hole.

According to the technical scheme, the distance L3 between the drainage ditch and the inner side face of the standing stone is 15-20 cm.

According to the technical scheme, the width B1 of the top surface of the drainage ditch is 40-60 cm, the width B2 of the bottom surface of the drainage ditch is 20-30 cm, and the height H of the drainage ditch is 40-60 cm.

According to the technical scheme, gravels are backfilled in the drainage ditch.

According to the technical scheme, the drain holes are arranged in the range of 5-10 m from each extension L1 on the two sides outside the ponding area, and standing stones in the range need to be drilled one by one; and arranging excavation drainage ditches in the range of 5-10 m of the extension L2 on two sides of the stone range of the drilling station.

The utility model has the following beneficial effects:

the problem that accumulated water is generated after precipitation on the lane of the circular cross slope towards the central circular island is avoided, driving safety is guaranteed, and water damage of a road surface structure is prevented.

Drawings

FIG. 1 is a floor plan of a roundabout drainage configuration in an embodiment of the present invention;

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

FIG. 3 is a view from the direction B of FIG. 2;

in the figure, 1-standing stones, 2-drain holes, 3-drain ditches, 4-broken stones, 5-permeable geotextile, 6-water accumulation areas, 7-central roundabout, 8-pavement elevation, 9-road center line and 10-lowest point of longitudinal section.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 3, the drainage structure for the roundabout in the embodiment of the utility model comprises a drainage ditch 3 and a plurality of standing stones 1 arranged along the edge of a central annular island of the roundabout, wherein the standing stones 1 are provided with drainage holes 2, the drainage ditch 3 is arranged between the central annular island and the standing stones 1 and is arranged along the edge of the central annular island, the drainage ditch 3 is arranged on the drainage side of the drainage holes 2, and the drainage holes 2 of the standing stones 1 are provided with filter screens.

Further, the filter screen is made of permeable geotextile 5, and the permeable geotextile 5 is arranged on the drainage side of the drainage hole 2 in the standing stone 1; and sundries in the central roundabout are prevented from polluting the road surface.

Further, the number of the drilled holes in each standing stone 1 is not more than 2.

Furthermore, the diameter d of the drain hole 2 is 12-16 cm; the specific diameter can be adjusted according to field drilling equipment and water accumulation conditions.

Further, the bottom of the drainage hole 2 should be lower than the road surface, and the top of the drainage ditch 3 should be lower than the drainage hole 2.

Further, the permeable geotextile 5 is adhered to the inner side surface of the standing stone 1 to cover the drainage side of the drainage hole 2; the inner side surface of the standing stone 1 refers to a surface close to the drainage ditch 3 and the central island.

Further, the length and width of the permeable geotextile 5 are more than 10cm larger than the diameter of the drain hole 2.

Furthermore, the distance L3 between the drainage ditch 3 and the inner side surface of the standing stone 1 is 15-20 cm.

Furthermore, the width B1 of the top surface of the drainage ditch 3 is 40-60 cm, the width B2 of the bottom surface is 20-30 cm, and the height H is 40-60 cm.

Furthermore, gravels 4 are filled in the drainage ditch 3.

Furthermore, the drain holes 2 are arranged in the range of 5-10 m from two sides of the water accumulation area 6 to extend L1, and the standing stones 1 in the range need to be drilled one by one; and arranging excavation drainage ditches 3 in the range of 5-10 m of the extension L2 on two sides of the range of the drilling station stone 1.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.

Claims

1. The utility model provides an roundabout drainage structures, its characterized in that includes the escape canal and arranges a plurality of stones of standing along roundabout's center ring island edge, is equipped with the wash port on the stone of standing, and the escape canal arranges between center ring island and the stone of standing, and the escape canal arranges in the drainage side of wash port, is equipped with the filter screen on the wash port of stone of standing.

2. A rotary intersection drainage arrangement as claimed in claim 1, wherein the number of drilled holes per standing stone is no more than 2.

3. An annular intersection drainage structure as claimed in claim 1, wherein the diameter d of the drainage hole is between 12 and 16 cm.

4. An intersection drainage arrangement according to claim 1, wherein the drain hole bottom elevation is below the road surface elevation and the drain roof is below the drain hole elevation.

5. An annular intersection drainage structure as claimed in claim 1, wherein the filter screen is a water-permeable geotextile, the water-permeable geotextile being adhered to an inner side surface of the standing stone to cover a drainage side of the drainage hole.

6. An annular intersection drainage structure as claimed in claim 5, wherein the length and width dimensions of the permeable geotextile are greater than the diameter of the drainage hole by more than 10 cm.

7. An annular intersection drainage structure according to claim 1, wherein the distance L3 between the drainage ditch and the inner side face of the standing stone is 15-20 cm.

8. An annular intersection drainage structure as claimed in claim 1, wherein the drainage ditch has a top width B1-60 cm, a bottom width B2-20-30 cm and a height H-40-60 cm.

9. An intersection water drainage structure according to claim 1, wherein the drainage ditch is backfilled with crushed stone.

10. An annular intersection drainage structure according to claim 1, wherein drainage holes are arranged in a range of 5-10 m from each of extensions L1 on both sides outside a water accumulation area; and arranging excavation drainage ditches in the range of 5-10 m of the extension L2 on two sides of the stone range of the drilling station.