CN215593525U - Roadbed cross section structure capable of changing road surface drainage mode and drainage system thereof - Google Patents
Roadbed cross section structure capable of changing road surface drainage mode and drainage system thereof Download PDFInfo
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- CN215593525U CN215593525U CN202120918624.7U CN202120918624U CN215593525U CN 215593525 U CN215593525 U CN 215593525U CN 202120918624 U CN202120918624 U CN 202120918624U CN 215593525 U CN215593525 U CN 215593525U
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Abstract
The utility model discloses a roadbed cross section structure for changing a road surface drainage mode and a drainage system thereof.A waterproof layer of a first kerbstone, a road surface, a second kerbstone and a ground surface section has an inclined slope inclining to the center side of a road, so that other accumulated water on the road surface such as rainwater and the like can conveniently flow to a central separation belt at the center of the road, and the accumulated water on the road surface is drained through a drainage ditch of the central separation belt; by changing the drainage direction of the road surface, the washing of the road surface by rainwater is greatly reduced, and the water damage phenomenon of the roadbed is reduced; and moreover, the protection standard of the roadbed side slope of the highway is lowered, the construction cost of early-stage construction and later-stage maintenance of the highway is reduced, the roadbed side slope can mainly protect plants, and the highway landscape is improved.
Description
Technical Field
The utility model relates to the technical field of traffic transportation, in particular to a roadbed cross section structure capable of changing a road surface drainage mode and a drainage system thereof.
Background
At present, the cross section of a common highway subgrade inclines from the center line of a road to the outer side of the subgrade, and the inclination gradient, namely the cross slope of a road surface, is 1.5-2% of the outer side of the subgrade so as to meet the drainage requirement.
However, when the rainfall is large and the rainfall is concentrated, the rainwater on the road surface is drained outwards, so that the road base side slope is greatly washed, and the water damage phenomenon occurs on part of the road base side slope, such as gully, road base side slope collapse, road surface and road base side slope landslide and the whole road base is hollowed. In order to reduce the above-mentioned dangerous road conditions, more protective works have to be installed on the roadbed slopes, however, the construction cost is increased as a result. However, concentrated rainfall and high-intensity rainfall days are few in each year, and high-standard protection has to be carried out for the small-probability events, so that large waste of funds is caused.
Based on the above consideration factors, it is urgently needed to design a highway subgrade structure which can not only prevent rainwater from intensively washing the subgrade slope, but also can not greatly increase the construction cost.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a roadbed cross section structure for changing a road surface drainage mode, and the cross section of the standard roadbed of the existing highway is improved, so that the highway roadbed cross section structure can meet the requirement of traffic safety guarantee and can greatly reduce the construction cost of early-stage construction and later-stage maintenance of the highway.
The second purpose of the utility model is to provide a drainage system of roadbed cross section structure for changing the road surface drainage mode, which can meet the road surface drainage function and effectively reduce the rain wash of the roadbed part to avoid the collapse of the roadbed bottom by improving the central separation belt of the existing standard roadbed cross section of the highway, and can improve the utilization rate of the rain water, promote the greening engineering around the highway and improve the ecological environment by guiding the water flow.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a roadbed cross section structure capable of changing a road surface drainage mode is characterized by comprising a central separation belt, a second curb, a road surface, a first curb and a roadbed slope which are sequentially arranged from the center of a road to two sides.
The road surface has an incline slope inclined toward the center side of the road.
And a backfill soil area is arranged at the position where the two sides of the central separation belt are connected with the second kerbstone and the highway subgrade, and a waterproof layer is additionally arranged on the backfill soil area to form a drainage ditch.
The waterproof layer located on the ground surface section has an inclination slope inclining to the center side of the road.
The top surface of the first curb is flush with the surface of the road surface and the roadbed slope, and has an inclined slope inclined toward the center side of the road.
The top surface of the second curb is flush with the surface of the road surface and the waterproof layer, and has an inclined slope inclined to the center side of the road.
The roadbed slope has a second incline slope inclining towards the outer side of the highway.
The waterproof layers of the first kerbstone, the highway pavement, the second kerbstone and the ground surface section have the same first inclined gradient.
And a water collecting well is also arranged below the drainage ditch, the water collecting well is isolated from the surrounding highway subgrade and geological layers by using a waterproof layer to prevent water seepage, and a drainage pipe with a third inclined slope towards the outer side of the highway is arranged on one side of the water collecting well.
A drainage system of a roadbed cross section structure for changing a pavement drainage mode is characterized by comprising a drainage ditch, a water collecting well, a drainage pipe and a liquid collecting tank.
And arranging a water collecting well and a drainage pipe for draining accumulated water in the water collecting well at intervals of 20-30M under a drainage ditch extending along the highway.
A liquid collecting tank with a 'field' -shaped frame structure is arranged below the water outlet of the water discharging pipe and used for collecting liquid discharged by the water discharging pipe.
The utility model has the beneficial effects that:
(1) the roadbed cross section structure greatly lightens the erosion of rainwater to the road surface and reduces the roadbed water damage phenomenon by changing the road surface drainage direction.
(2) The roadbed cross section structure can reduce the protection standard of the roadbed side slope of the highway, reduce the construction cost of early-stage construction and later-stage maintenance of the highway, ensure that the roadbed side slope can mainly protect plants and improve the highway landscape.
(3) The roadbed cross section structure can be used for construction design of a newly-built road and construction design for reconstruction of an original highway, is wide in application range, can change a road surface drainage mode only through simple construction procedures, and has the effects of preventing water and soil loss and consolidating the original roadbed structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following drawings needed to be used in the description of the embodiments of the present invention are provided, and it is obvious that the following drawings are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of a standard cross-sectional structure of a conventional highway subgrade;
fig. 2 is a schematic view of a cross-sectional structure of the roadbed according to the utility model;
fig. 3 is a schematic view of a cross-sectional structure of the roadbed according to the utility model;
the road comprises a roadbed slope 1, a roadbed slope 2, a highway pavement 3, a first curb stone 4, a second curb stone 5, a backfill soil area 6, a waterproof layer 7, a drainage ditch 8, a water collecting well 9, a drainage pipe 10, a liquid collecting tank 11 and a drainage device.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood broadly, and may be, for example, fixed, detachable, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, or the two components can be connected internally or in an interaction relationship; to those skilled in the art, the above terms are to be understood as having the specific meanings of the present invention according to specific situations and not as being limiting.
The first embodiment is as follows:
as shown in fig. 2, the present embodiment provides a roadbed cross section structure with a changed road surface drainage mode, which is characterized by comprising a central dividing strip, a second curb 4, a road surface 2, a first curb 3 and a roadbed slope 1 which are sequentially arranged from the center of a road to two sides.
And backfill soil areas 5 are arranged at the positions where the two sides of the central separation belt are connected with the second kerbs 4 and the highway subgrade, and waterproof layers 6 are additionally arranged on the backfill soil areas 5 to form drainage ditches 7.
The waterproof layer 6 on the surface section has an inclined slope inclined toward the center side of the highway, so that rainwater and other accumulated road surface water can flow to the central separation zone at the center of the highway conveniently, and the accumulated road surface water is discharged through the drainage ditch 7 of the central separation zone.
The road surface 2 has an inclined slope inclined toward the center side of the road, so that other surface water such as rainwater can flow toward the central bank at the center of the road, and the surface water can be discharged through the drainage ditch 7 of the central bank.
The top surface of the first curb 3 is flush with the surfaces of the highway pavement 2 and the roadbed slope 1, and has an inclined slope inclining to the central side of the highway, so that other accumulated water on the road surface such as rainwater can flow to the central separation belt at the central position of the highway conveniently, and the accumulated water on the road surface can be discharged through the drainage ditch 7 of the central separation belt.
The top surface of the second curb 4 is flush with the surfaces of the highway pavement 2 and the waterproof layer 6, and has an inclined slope inclined towards the central side of the highway, so that other accumulated water on the pavement such as rainwater can flow to the central separation belt at the central position of the highway conveniently, and the accumulated water on the pavement can be discharged through the drainage ditch 7 of the central separation belt.
The roadbed slope 1 is provided with a second slope which inclines towards the outer side of the highway, so that the surface of the roadbed slope 1 is prevented from forming surface water.
Preferably, the first curb 3, the highway road surface 2, the second curb 1 and the waterproof layer 6 of the surface section have the same first slope gradient, so that the road surface is prevented from being rugged.
Preferably, the first slope is 1.2-2.5%, so that the road surface can be drained smoothly while the traffic driving safety is ensured, and the water accumulation on the road surface is prevented.
Preferably, the second inclination of slope is 1.2-5.5%, when guaranteeing the stable structure of road bed side slope, prevents the surface water accumulation of road bed side slope.
Example two:
as shown in fig. 3, the present embodiment provides a roadbed cross section structure with a changed road surface drainage mode, which is characterized by comprising a central dividing strip, a second curb 4, a road surface 2, a first curb 3 and a roadbed slope 1 which are sequentially arranged from the center of a road to two sides.
And backfill soil areas 5 are arranged at the positions where the two sides of the central separation belt are connected with the second kerbs 4 and the highway subgrade, and waterproof layers 6 are additionally arranged on the backfill soil areas to form drainage ditches 7.
Still be provided with sump pit 8 in escape canal 7 below, sump pit 8 utilizes waterproof layer 6 and highway subgrade and geological stratification around to keep apart and prevents the infiltration, and be provided with the drain pipe 9 that has to highway outside third slope in sump pit 8 one side, outside the ponding discharge highway in the escape canal 7, and changed the drainage mode of the following geological stratification of infiltration subgrade after the backfill soil absorbs ponding in the central median of current highway, good consolidation original roadbed structure, avoided ponding to the washing away of road stratum basale and the subgrade collapse phenomenon that leads to the fact from this.
The drain pipe 9 leads to the outside of roadbed side slope, and the third slope is 1.8-6.5%, when effectively guaranteeing sump pit drainage function, prevents that the velocity of water flow is too fast, avoids causing the washing away of outside roadbed side slope 1 substructure to and avoid forming a large amount of soil erosion and water loss phenomenon.
The waterproof layer 6 on the surface section has an inclined slope inclined toward the center side of the highway, so that rainwater and other accumulated road surface water can flow to the central separation zone at the center of the highway conveniently, and the accumulated road surface water is discharged through the drainage ditch 7 of the central separation zone.
The road surface 2 has an inclined slope inclined toward the center side of the road, so that other surface water such as rainwater can flow toward the central bank at the center of the road, and the surface water can be discharged through the drainage ditch 7 of the central bank.
The top surface of the first curb 3 is flush with the surfaces of the highway pavement 2 and the roadbed slope 1, and has an inclined slope inclining to the central side of the highway, so that other accumulated water on the road surface such as rainwater can flow to the central separation belt at the central position of the highway conveniently, and the accumulated water on the road surface can be discharged through the drainage ditch 7 of the central separation belt.
The top surface of the second curb 4 is flush with the surfaces of the highway pavement 2 and the waterproof layer 6, and has an inclined slope inclined towards the central side of the highway, so that other accumulated water on the pavement such as rainwater can flow to the central separation belt at the central position of the highway conveniently, and the accumulated water on the pavement can be discharged through the drainage ditch 7 of the central separation belt.
The roadbed slope 1 is provided with a second slope which inclines towards the outer side of the highway, so that the surface of the roadbed slope 1 is prevented from forming surface water.
Preferably, the first curb 3, the highway road surface 2, the second curb 4 and the waterproof layer 6 of the surface section have the same first slope gradient, so that the road surface is prevented from being rugged.
Preferably, the first slope is 1.2-2.5%, so that the road surface can be drained smoothly while the traffic driving safety is ensured, and the water accumulation on the road surface is prevented.
Preferably, the second inclination of slope is 1.2-5.5%, when guaranteeing the stable structure of road bed side slope, prevents the surface water accumulation of road bed side slope.
Example three:
as shown in fig. 2 to 3, the present embodiment provides a drainage system of a roadbed cross-sectional structure for changing a road surface drainage mode, which is characterized by comprising a drainage ditch 7, a water collecting well 8, a drainage pipe 9 and a liquid collecting tank 10.
Under the drainage ditch 7 extending along the road, a water collecting well 8 and a drainage pipe 9 for draining accumulated water in the water collecting well are arranged at intervals of 20-30M.
The drain pipe 9 has the third slope that inclines to highway outside below, just the outlet of drain pipe 9 accesss to the outside of roadbed side slope, and the third slope is 1.8-6.5%, when effectively guaranteeing the 8 drainage functions of sump pit, prevents that the velocity of water is too fast, avoids causing the washing away of 1 substructure of outside roadbed side slope to and avoid forming a large amount of soil erosion and water loss phenomena.
And a liquid collecting tank 10 with a 'field' -shaped frame structure is arranged below the water outlet of the water discharge pipe 9 and used for collecting liquid discharged by the water discharge pipe 9, so that natural maintenance can be provided for green plants on the highway subgrade side slope 1 while soil loss is prevented.
Preferably, the sump 10 is made of concrete or granite and other building materials with good water-proof function.
Comparative example one:
as shown in fig. 1, the present embodiment provides a standard cross-sectional structure of a conventional highway subgrade, which is characterized by comprising a central dividing strip, a second curb 4, a highway pavement 2, a first curb 3 and a subgrade slope 1, which are sequentially arranged from the center of a highway to two sides.
The central separation belt is formed by surrounding second kerbs 4 on two sides and a highway subgrade, a drainage device 11 is arranged on the bottom surface, rainwater generally penetrates into a geological layer below the subgrade through the drainage device 11, a backfill soil area 5 is arranged in the central separation belt, and a green belt is arranged on the backfill soil area 5.
The highway surface 2 has an incline slope inclining to the outer side of the highway, so that accumulated road surface water is discharged to the roadbed side slope 1 of the outer side of the highway.
The top surface of the first curb 3 is flush with the surfaces of the highway pavement 2 and the roadbed slope 1, and has an inclined slope inclining towards the outer side of the highway, so that accumulated water on the pavement is discharged towards the roadbed slope 1 at the outer side of the highway.
The second curb 4 is higher than the surfaces of the highway pavements 2 and the waterproof layers 6 on the two sides, prevents the accumulated water on the road surface from flowing into the backfill soil of the central separation strip, avoids the accumulated water on the road surface such as rainwater and the like from downwards permeating into the geological layer of the roadbed bottom through the backfill soil of the central separation strip, washes the geological layer of the roadbed bottom and avoids the phenomena of empty roadbed collapse and the like.
The subgrade side slope 1 has a second slope inclining towards the outer side of the highway, so that accumulated road surface water is discharged from the subgrade side slope 1 on the outer side of the highway.
Preferably, the first curb 3 and the road surface 2 have the same first inclination.
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 roadbed cross section structure for changing a road surface drainage mode is characterized by comprising a central separation band, a second curb, a road surface, a first curb and a roadbed side slope which are sequentially arranged from the center of a road to two sides;
the road surface has an incline slope inclined toward the center side of the road.
2. The roadbed cross section structure for changing the road surface drainage mode is characterized in that backfill areas are arranged at the positions, connected with the second kerbs and the highway roadbed, of two sides of the central separation belt, and waterproof layers are additionally arranged on the backfill areas to form drainage ditches.
3. The roadbed cross section structure for changing the road surface drainage mode according to claim 2, wherein the waterproof layer on the ground surface section has an inclined slope inclined toward the center side of the road.
4. The roadbed cross-sectional structure for changing the road surface drainage mode as claimed in claim 2, wherein the top surface of the first curb is flush with the surface of the road surface and the roadbed slope, and has an inclined slope inclined toward the center side of the road.
5. A roadbed cross sectional structure for changing a road surface drainage mode according to claim 2, wherein the top surface of the second kerb is flush with the surface of the road surface and the waterproof layer, and has an inclined slope inclined toward the center side of the road.
6. A roadbed cross sectional structure for changing a road surface drainage mode according to claim 1, wherein the roadbed slope has a second slope gradient which is inclined toward an outer side of the highway.
7. The roadbed cross section structure for changing the road surface drainage mode according to claim 2, wherein the waterproof layers of the first kerbstone, the highway road surface, the second kerbstone and the ground surface section have the same first inclined gradient.
8. A roadbed cross-sectional structure for changing a road surface drainage mode, according to claim 2, wherein a water collection well is further provided below the drainage ditch, the water collection well is isolated from a surrounding highway roadbed and geological layers by a waterproof layer to prevent water seepage, and a drainage pipe having a third slope toward the outer side of the highway is provided at one side of the water collection well.
9. A drainage system of a roadbed cross section structure for changing a road surface drainage mode is suitable for the roadbed cross section structure for changing the road surface drainage mode according to claims 1-8, and is characterized by comprising a drainage ditch, a water collecting well, a drainage pipe and a liquid collecting tank;
and arranging a water collecting well and a drainage pipe for draining accumulated water in the water collecting well at intervals of 20-30M under a drainage ditch extending along the highway.
10. The roadbed cross section structure drainage system for changing the road surface drainage mode as claimed in claim 9, wherein a liquid collecting tank of a frame structure of a 'field' is arranged below the drainage port of the drainage pipe, and is used for collecting liquid drained by the drainage pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120918624.7U CN215593525U (en) | 2021-04-29 | 2021-04-29 | Roadbed cross section structure capable of changing road surface drainage mode and drainage system thereof |
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| CN202120918624.7U CN215593525U (en) | 2021-04-29 | 2021-04-29 | Roadbed cross section structure capable of changing road surface drainage mode and drainage system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114703710A (en) * | 2022-03-17 | 2022-07-05 | 中国公路工程咨询集团有限公司 | Granite residual soil roadbed structure and construction method thereof |
| CN114703946A (en) * | 2022-05-05 | 2022-07-05 | 肖旭阳 | Highway surface accumulated water treatment structure and treatment method thereof |
-
2021
- 2021-04-29 CN CN202120918624.7U patent/CN215593525U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114703710A (en) * | 2022-03-17 | 2022-07-05 | 中国公路工程咨询集团有限公司 | Granite residual soil roadbed structure and construction method thereof |
| CN114703946A (en) * | 2022-05-05 | 2022-07-05 | 肖旭阳 | Highway surface accumulated water treatment structure and treatment method thereof |
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