CN212077508U - Semi-filling and semi-digging type roadbed structure - Google Patents
Semi-filling and semi-digging type roadbed structure Download PDFInfo
- Publication number
- CN212077508U CN212077508U CN202020115220.XU CN202020115220U CN212077508U CN 212077508 U CN212077508 U CN 212077508U CN 202020115220 U CN202020115220 U CN 202020115220U CN 212077508 U CN212077508 U CN 212077508U
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- Prior art keywords
- roadbed
- fill
- semi
- road bed
- excavation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000009412 basement excavation Methods 0.000 claims abstract description 49
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims description 7
- 239000004746 geotextile Substances 0.000 abstract description 12
- 239000002689 soil Substances 0.000 abstract description 9
- 239000012466 permeate Substances 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Abstract
The utility model provides a fill half cut formula roadbed structure relates to roadbed structure's technical field, including fill road bed and excavation road bed, fill road bed has laid waterproof geomembrane with excavation road bed juncture, fill road bed below parallel arrangement has many drain pipes, many the drain pipe layering is laid, and many drain pipes are located different vertical faces, many one side that the fill road bed was kept away from to the drain pipe has all been seted up a plurality of holes of permeating water, the cover is equipped with the anti-geotechnological cloth of straining on the drain pipe. When the underground water reversely seeps, the underground water flows into the drainage pipe through the water permeable holes of the drainage pipe and flows out along the drainage pipe, and the waterproof geomembrane blocks the water seeping into the filling roadbed from the excavated roadbed, so that the water quantity reversely seeping into the filling roadbed is reduced, and the aim of improving the stability of the roadbed is fulfilled; in addition, the arrangement of the reverse filter geotextile ensures that partial soil is not easy to take away when moisture permeates into the drainage pipe, and the stability of the filling roadbed is further improved.
Description
Technical Field
The utility model belongs to the technical field of roadbed structure's technique and specifically relates to a fill half formula roadbed structure.
Background
The semi-filled and semi-excavated roadbed refers to a roadbed with part of a embankment and part of a cutting in a cross section.
In the prior art, for example, chinese patent with publication number CN20312962U proposes a half-filled and half-excavated roadbed for a low-ice and multi-ice road section highway, wherein a sand-filled gravel layer is arranged below a road surface structure layer of an excavated square section, and the sand-filled gravel layer is provided with a side slope and a transverse slope of a bottom surface; a full-section waterproof geotextile is arranged below the sand-filled gravel layer; and steep slope steps are arranged in a height interval from 80cm below a road surface structure layer of the filling section to the intersection of the steep slope and a ground line, clean gravel or stone ballast is arranged on the steep slope steps layer by layer for filling, and a plurality of layers of geogrids are laid from top to bottom in the clean gravel or stone ballast filling.
However, in the semi-filling and semi-excavating roadbed in the technical scheme, gravel or stone slag is arranged below the filling section, so that accumulated water on the road surface can flow away, but for underground reverse seepage water, the accumulated water can be retained in the filling section and flows into the excavating roadbed, so that the roadbed and the foundation thereof are soaked, the strength of the roadbed is reduced, and the stability of the roadbed is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a fill half formula roadbed structure, the setting up of drain pipe and waterproof geomembrane has reduced moisture content in the road bed to realize improving the purpose of road bed stability.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a fill half cut formula roadbed structure, includes fill road bed and excavation road bed, waterproof geomembrane has been laid with excavation road bed juncture to fill road bed, fill road bed below parallel arrangement has many drain pipes, many the drain pipe layering is laid, and many drain pipes are located different vertical faces, many one side that fill road bed was kept away from to the drain pipe has all been seted up a plurality of holes of permeating water, the cover is equipped with anti-geotechnological cloth of straining on the drain pipe.
By adopting the technical scheme, when underground water reversely permeates, the underground water flows into the drainage pipe through the water permeable holes of the drainage pipe and flows out along the drainage pipe, and the waterproof geomembrane blocks water permeating into the filling roadbed from the excavated roadbed, so that the water quantity reversely permeating into the filling roadbed is reduced, and the aim of improving the stability of the roadbed is fulfilled; in addition, due to the arrangement of the reverse filter geotextile, when moisture permeates into the drainage pipe, part of soil is not easy to take away, and the stability of the filled roadbed is further improved; the drainage pipes arranged in layers are not easy to damage the continuity of the connection of the roadbed, so that the filling roadbed is not easy to generate fault due to the drainage pipes and the bottom surface, and the filling roadbed is not easy to collapse.
The present invention may be further configured in a preferred embodiment as: the drain pipe is obliquely arranged.
Through adopting above-mentioned technical scheme, the drain pipe that the slope set up makes the moisture content of remaining in the drain pipe flow under self action of gravity to moisture content has been reduced and has been left in the drain pipe.
The present invention may be further configured in a preferred embodiment as: fill the road bed and keep away from one side of excavation road bed and offer the first side ditch along fill road bed length direction, first side ditch is close to the first geotechnological cloth of anti-straining of fixedly connected with on the lateral wall of fill road bed, the drain pipe terminal surface with first anti-geotechnological cloth butt of straining.
By adopting the technical scheme, the arrangement of the first side ditch enables the water led out by the drain pipe to flow into the first side ditch so as to be discharged; in addition, the arrangement of the first anti-filter geotextile ensures that the water is not easy to drive the soil to flow when flowing towards the side ditch, thereby reducing the soil loss of the bottom surface of the filling roadbed and improving the stability of the filling roadbed.
The present invention may be further configured in a preferred embodiment as: one side of the excavation roadbed, which is far away from the filling roadbed, is provided with an exhaust ditch, and a waterproof and breathable film is arranged at the opening of the exhaust ditch.
By adopting the technical scheme, the arrangement of the exhaust channel enables air to be in contact with the side face of the excavation roadbed through the exhaust channel, so that moisture on the side face of the excavation roadbed is taken away, and the arrangement of the exhaust channel reduces the contact surface between a mountain and the excavation roadbed, so that moisture permeating into the excavation roadbed from the mountain is reduced, and the stability of the excavation roadbed is improved; the arrangement of the waterproof breathable film ensures that moisture generated by rainfall and the like is not easy to flow into the exhaust channel.
The present invention may be further configured in a preferred embodiment as: and the exhaust channel is filled with stones.
Through adopting above-mentioned technical scheme, the setting of piece stone is keeping under the condition of exhaust communication wind performance, is filled the exhaust ditch to when making staff or other personnel be difficult for stepping on waterproof ventilated membrane, the empty phenomenon appears stepping on, thereby improved the security on scene.
The present invention may be further configured in a preferred embodiment as: and a second side ditch is arranged between the exhaust ditch and the excavation roadbed.
Through adopting above-mentioned technical scheme, the setting of second gutter is convenient for the surface gathered water that rainfall or other reasons produced to flow into the gutter to reduce the infiltration of surface gathered water, thereby further improved the stability of road bed.
The present invention may be further configured in a preferred embodiment as: the excavation roadbed is provided with a plurality of water guide plates which are arranged in parallel, the water guide plates are arranged in a layered mode and are located on different vertical surfaces, and the side surfaces of the water guide plates are arranged in an arc shape.
By adopting the technical scheme, the arrangement of the water guide plate enables accumulated water on the road surface to flow out of the excavation roadbed under the action of the water guide plate when the accumulated water permeates into the excavation roadbed; the water guide plates arranged in a layered mode are not prone to affecting connection of the excavation roadbed and the mountain body, and therefore the excavation roadbed is not prone to collapse.
The present invention may be further configured in a preferred embodiment as: the water guide plate is obliquely arranged.
Through adopting above-mentioned technical scheme, the water deflector slope sets up for moisture content in the road bed of digging is changeed and is flowed along the water deflector.
The present invention may be further configured in a preferred embodiment as: the inside fixedly connected with second side ditch lateral wall is anti-to strain geotechnological cloth, the anti-geotechnological cloth that strains of second is located one side that the second side ditch is close to the excavation road bed, the terminal surface and the anti-geotechnological cloth butt of straining of second that fill road bed are kept away from to the water deflector.
Through adopting above-mentioned technical scheme, the setting of the anti geotechnological cloth of straining of second for when moisture content in the excavation road bed flows into the side ditch along the water deflector, be difficult for taking away the soil in the excavation road bed, thereby improved the stability of excavation road bed.
To sum up, the utility model discloses a following at least one useful technological effect:
1. when the underground water reversely seeps, the underground water flows into the drainage pipe through the water permeable holes of the drainage pipe and flows out along the drainage pipe, and the waterproof geomembrane blocks the water seeping into the filling roadbed from the excavated roadbed, so that the water quantity reversely seeping into the filling roadbed is reduced, and the aim of improving the stability of the roadbed is fulfilled; in addition, due to the arrangement of the reverse filter geotextile, when moisture permeates into the drainage pipe, part of soil is not easy to take away, and the stability of the filled roadbed is further improved; the drainage pipes which are arranged in layers are not easy to damage the continuity of the connection of the roadbed, so that the filled roadbed is not easy to collapse due to the fact that the drainage pipes and the bottom surface are in fault;
2. the water deflector that the slope set up for when surface gathered water infiltration excavation road bed, under the water deflector effect, the excavation road bed of outflow, through the anti geotechnological cloth inflow second side ditch of straining of second, thereby reduce the moisture content in the excavation road bed, the setting of the anti geotechnological cloth of straining of second in addition, when making the moisture content in the excavation road bed flow into the side ditch along the water deflector, the soil in the excavation road bed is difficult for taking away, thereby has improved the stability of excavation road bed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numerals: 100. filling the roadbed; 110. a drain pipe; 120. a waterproof geomembrane; 130. a first gutter; 131. a first reverse filter geotextile; 200. excavating a square roadbed; 210. a second gutter; 220. a second reverse filter geotextile; 230. a water guide plate; 300. an exhaust channel; 310. lump stones; 320. waterproof ventilated membrane.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, in order to the present invention, a half-fill and half-cut roadbed structure includes a fill roadbed 100 and an excavation roadbed 200. A waterproof geomembrane 120, preferably an HDPE geomembrane, is laid at the junction of the filling roadbed 100 and the excavation roadbed 200.
The drainage pipes 110 are arranged in parallel below the fill subgrade 100, a plurality of the drainage pipes 110 are arranged in layers, and the drainage pipes 110 are positioned on different vertical surfaces. In order to facilitate the reverse osmosis of groundwater to enter the drainage pipes, a plurality of water permeable holes 111 are formed in one side of the drainage pipes 110 far away from the fill roadbed 100, and the drainage pipes 110 are sleeved with reverse filtration geotextile so that moisture is not easy to drive soil to flow into the drainage pipes 110.
In order to facilitate the drainage of the road surface of the filling subgrade 100 and the drainage of water in the drainage pipe 110, a first side ditch 130 along the length direction of the filling subgrade 100 is formed on one side of the filling subgrade 100 far away from the excavation subgrade 200, and a first anti-filtration geotextile 131 is fixedly connected to the side wall of the first side ditch 130 near the filling subgrade 100. The drainage pipe 110 is inclined in a direction toward a direction away from the filling roadbed 100 along a direction in which the excavation roadbed 200 approaches the first side ditch 130, and an end surface of the drainage pipe 110 away from the excavation roadbed 200 abuts against the first anti-filter geotextile 131.
In order to reduce the water permeation of the mountain or other ground of the excavation roadbed 200 far away from the filling roadbed 100 to the excavation roadbed 200, an exhaust ditch 300 is arranged on one side of the excavation roadbed 200 far away from the filling roadbed 100, the exhaust ditch 300 is filled with rock blocks 310, a waterproof breathable film 320 is arranged at the opening of the exhaust ditch 300 in order to reduce the water such as rainfall or road surface water accumulation flowing into the exhaust ditch 300, and the waterproof breathable film 320 is preferably a TPU film.
In order to facilitate the drainage of the accumulated water on the road surface above the excavation base 200, a second side ditch 210 is formed between the exhaust ditch 300 and the excavation base 200.
In addition, a plurality of parallel water guide plates 230 are arranged in the excavation roadbed 200, the water guide plates 230 are arranged in a layered mode, and the side faces of the water guide plates 230 are arranged in an arc shape, so that accumulated water on the road surface can be conveniently contacted with the water guide plates 230 after permeating into the excavation roadbed 200 and can be discharged by the water guide plates 230.
In addition, the water deflector 230 is obliquely arranged towards the vertical downward direction along the direction of the filling roadbed close to the second side ditch, so that accumulated water on the water deflector 230 flows out, the second side ditch 210 is fixedly connected with a second anti-filtering geotextile 220 in the side wall close to the excavation roadbed 200, and the end surface of the water deflector 230 close to the second side ditch 210 is abutted against the second anti-filtering geotextile 220, so that the loss of soil in the excavation roadbed 200 is reduced.
The implementation principle of the embodiment is as follows: when the groundwater reversely permeates, the groundwater flows into the drainage pipe 110 through the water permeable holes of the drainage pipe 110 and flows out along the drainage pipe 110, and the waterproof geomembrane 120 blocks the water permeating into the excavation subgrade 200 into the fill subgrade 100; after rainfall, the water accumulated on the road surface flows into the first side ditch 130 and the second side ditch 210, and the water seeping from the road surface flows into the second side ditch 210 through the water guide plate 230.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. A half-fill and half-cut roadbed structure comprises a fill roadbed (100) and a cut roadbed (200), and is characterized in that: fill road bed (100) and excavation road bed (200) juncture and laid waterproof geomembrane (120), fill road bed (100) below parallel arrangement has many drain pipes (110), many drain pipe (110) layering is laid, and many drain pipe (110) are located different vertical faces, many one side that fill road bed (100) was kept away from in drain pipe (110) has all been seted up a plurality of holes of permeating water, the cover is equipped with anti-geotechnological cloth of straining on drain pipe (110).
2. The semi-cut and semi-fill subgrade structure of claim 1, characterized in that: the drain pipe (110) is obliquely arranged.
3. The semi-cut and semi-cut roadbed structure of claim 2, wherein: fill road bed (100) keep away from one side of excavation road bed (200) and offer along fill road bed (100) length direction's first side ditch (130), first side ditch (130) are close to on the lateral wall of fill road bed (100) fixedly connected with first anti geotechnological cloth (131) of straining, drain pipe (110) terminal surface and first anti geotechnological cloth (131) butt of straining.
4. A semi-cut and semi-fill subgrade structure according to claim 3, in which: an exhaust ditch (300) is formed in one side, far away from the fill roadbed (100), of the excavation roadbed (200), and a waterproof breathable film (320) is arranged at the opening of the exhaust ditch (300).
5. The semi-cut and semi-fill subgrade structure of claim 4, wherein: the exhaust channel (300) is filled with stones (310).
6. The semi-cut and semi-fill subgrade structure of claim 5, wherein: and a second side ditch (210) is arranged between the exhaust ditch (300) and the excavation roadbed (200).
7. The semi-cut and semi-fill subgrade structure of claim 6, wherein: the novel excavation roadbed is characterized in that a plurality of water guide plates (230) are arranged in the excavation roadbed (200), the water guide plates (230) are arranged in parallel, the water guide plates (230) are arranged in a layered mode, the water guide plates (230) are located on different vertical surfaces, and the side faces of the water guide plates (230) are arranged in an arc shape.
8. The semi-cut and semi-fill subgrade structure of claim 7, wherein: the water guide plate (230) is obliquely arranged.
9. The semi-cut and semi-fill subgrade structure of claim 8, wherein: the inside fixedly connected with second anti geotechnological cloth (220) of straining of second side ditch (210) lateral wall, anti geotechnological cloth (220) of straining of second is located one side that second side ditch (210) are close to excavation road bed (200), the terminal surface and the anti geotechnological cloth (220) butt of straining of second of fill road bed (100) are kept away from in water deflector (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020115220.XU CN212077508U (en) | 2020-01-17 | 2020-01-17 | Semi-filling and semi-digging type roadbed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020115220.XU CN212077508U (en) | 2020-01-17 | 2020-01-17 | Semi-filling and semi-digging type roadbed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212077508U true CN212077508U (en) | 2020-12-04 |
Family
ID=73569167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020115220.XU Expired - Fee Related CN212077508U (en) | 2020-01-17 | 2020-01-17 | Semi-filling and semi-digging type roadbed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212077508U (en) |
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2020
- 2020-01-17 CN CN202020115220.XU patent/CN212077508U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210408 Address after: 250000 6 / F, building 3, fortune Valley, Jiaoyue, north of Mingshui street railway station and west of new passenger station, Zhangqiu District, Jinan City, Shandong Province Patentee after: Zhangqiu Yellow River Water Conservancy and Hydropower Engineering Co.,Ltd. Address before: 250000 south of national highway 309, Hanjia village, Guanzhuang street, Zhangqiu District, Jinan City, Shandong Province Patentee before: Zhangqiu Jintong Road Bridge Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |