CN210916845U - Cold region improved clay roadbed with water drainage structure added at edge of pavement cushion layer - Google Patents
Cold region improved clay roadbed with water drainage structure added at edge of pavement cushion layer Download PDFInfo
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- CN210916845U CN210916845U CN201921313464.2U CN201921313464U CN210916845U CN 210916845 U CN210916845 U CN 210916845U CN 201921313464 U CN201921313464 U CN 201921313464U CN 210916845 U CN210916845 U CN 210916845U
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- road
- clay
- road surface
- drainage structure
- roadbed
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- 239000004927 clay Substances 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000004746 geotextile Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 18
- 239000002344 surface layer Substances 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 230000008014 freezing Effects 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 abstract description 2
- 238000010257 thawing Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The edge of the pavement cushion layer is additionally provided with a cold region improved type clay roadbed with a drainage structure. The compacted clay roadbed has small permeability coefficient and poor permeability. Rainwater seeped along cracks of the road surface, road surface materials and road shoulders needs to be discharged from a gravel cushion layer on the top surface of the road, otherwise, free water is retained for a long time, the strength of the road bed clay is reduced, the service life of a road surface structural layer is shortened under the repeated action of driving load, and roadbed diseases such as frost heaving, slurry turning, springiness and the like can be caused during freezing and thawing in a cold area, so that the early damage of the road surface structural layer is accelerated. The utility model discloses a constitution includes: clay road bed (1), clay road bed on be equipped with gravel bed course (3), gravel bed course both sides be equipped with sluicing structure (5), the gravel bed course on be road surface layer (6) and basic unit (2), road surface layer with basic unit structure both sides be road shoulder (7). The utility model is used for road surface bed course limit portion adds the cold district that establishes the sluicing structure and improves type clay road bed.
Description
The technical field is as follows:
the utility model relates to a road surface bed course limit portion adds cold district that establishes sluicing structure and improves type clay road bed.
Background art:
after the clay subgrade is compacted, the permeability coefficient is very small, and the water permeability is very poor. Rainwater seeped along cracks of the road surface, road surface materials and road shoulders needs to be discharged from a gravel cushion layer on the top surface of the road, otherwise, free water is retained for a long time, the strength of the road bed clay is reduced, the service life of a road surface structural layer is shortened under the repeated action of driving load, and roadbed diseases such as frost heaving, slurry turning, springiness and the like can be caused during freezing and thawing in a cold area, so that the early damage of the road surface structural layer is accelerated.
The utility model has the following contents:
the utility model aims at providing a road surface bed course limit portion adds cold district improvement type clay road bed who establishes the sluicing structure.
The above purpose is realized by the following technical scheme:
the road surface cushion coat edge adds the cold district who establishes the sluicing structure and improves type clay road bed, and its constitution includes: clay road bed, clay road bed on be equipped with the gravel bed course, gravel bed course both sides be equipped with the sluicing structure, the gravel bed course on be road surface layer and basic unit, road surface layer with the structure both sides of basic unit be the road shoulder.
The road surface cushion layer edge is additionally provided with a cold region improved clay road base of a water drainage structure, and the water drainage structure is a water seepage piece formed by gravels wrapped with geotechnical cloth or geotechnical water drainage films.
The cold region improved clay roadbed with the water drainage structure is additionally arranged at the edge part of the pavement cushion layer, and the water drainage structure is a water seepage piece made of sand-free concrete.
The cold region improved clay roadbed with the water drainage structure is additionally arranged at the edge of the pavement cushion layer, the water drainage structure is a water seepage piece formed by large-porosity cement stabilized macadam, and the porosity of the large-porosity cement stabilized macadam is 15% -30%.
The edge of the pavement cushion layer is additionally provided with a cold region improved clay roadbed with a water drainage structure, and the water drainage structure is a water seepage piece formed by a geotechnical water drainage mat.
The utility model has the advantages that:
1. the utility model discloses adopt geotechnological cloth clad's granular material or no sand concrete or large porosity cement to stabilize rubble etc. and make as the escape canal at gravel bed course both ends, can avoid damaging because of the produced road bed of rainwash loss gravel for the drainage structures on gravel bed is complete, keeps good drainage effect.
The utility model discloses a syllogic escape canal is made, can be with the rapid evacuation of the water of gravel in situ infiltration, melt in the north and freeze season can not produce diseases such as frost heave, in the cold district in the north the utility model discloses more obvious effect has.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
example 1:
a cold region improved type clay roadbed with a water drainage structure additionally arranged on the edge of a pavement cushion layer comprises the following components: clay roadbed 1, clay roadbed on be equipped with gravel cushion 3, gravel cushion both sides be equipped with sluicing structure 5, the gravel cushion on be road surface layer 6 and basic unit 2, road surface layer with the structure both sides of basic unit be road shoulder 7.
Example 2:
the cold region improved clay roadbed of the road surface cushion layer in the embodiment 1 is additionally provided with a water drainage structure, wherein the water drainage structure is a water seepage piece formed by gravels coated with geotechnical cloth or geotechnical water drainage films.
Example 3:
the cold region-improving clay roadbed of the pavement mat in example 1 is provided with a drain structure at the edge thereof, wherein the drain structure is a water-permeable member made of sand-free concrete.
Example 4:
the cold region-improved clay roadbed of the pavement cushion in the embodiment 1 is additionally provided with a water drainage structure, wherein the water drainage structure is a water seepage piece consisting of large-porosity cement-stabilized macadam, and the porosity of the large-porosity cement-stabilized macadam is 15-30%.
Example 5:
the cold region improved clay roadbed of the road surface cushion layer of the embodiment 1 is additionally provided with a water drainage structure, wherein the water drainage structure is a water seepage piece formed by a geotechnical water drainage mat.
The edge of the pavement cushion layer is additionally provided with a cold region improved clay road base of a drainage structure, and the clay road base is filled with silty clay or clay; the gravel cushion layer generally has the functions of drainage, freezing prevention and the like; the gravel cushion edge part water drainage structure is formed by materials such as broken stones wrapped with geotextile, sand-free concrete or large-porosity cement stabilized broken stones, has certain reverse filtering and water drainage capacity, can bear the weight, meets the rolling requirement, and can functionally meet the smooth discharge of free water in the gravel cushion.
The clay road base is filled with silty clay or clay, and the drainage ditch is of a three-section structure consisting of a central gravel cushion layer and large-pore side regions at two ends.
Claims (5)
1. A cold region improved type clay roadbed with a water drainage structure additionally arranged on the edge of a pavement cushion layer comprises the following components: the clay roadbed is characterized in that: the clay road base on be equipped with the gravel bed course, gravel bed course both sides be equipped with the sluicing structure, the gravel bed course on be road surface course and basic unit, road surface course with the structure both sides of basic unit be the road shoulder.
2. The cold-region-improved clay roadbed having a water drainage structure at the edge of a road surface cushion according to claim 1, wherein the clay roadbed comprises: the drainage structure is a water seepage part formed by gravels coated with geotextile or a geotechnical drainage film.
3. The cold-region-improved clay roadbed having a water drainage structure at the edge of a road surface cushion according to claim 1, wherein the clay roadbed comprises: the drainage structure is a water-permeable member made of sand-free concrete.
4. The cold-region-improved clay roadbed having a water drainage structure at the edge of a road surface cushion according to claim 1, wherein the clay roadbed comprises: the water drainage structure is a water seepage piece consisting of large-porosity cement-stabilized macadam, and the porosity of the large-porosity cement-stabilized macadam is 15% -30%.
5. The cold-region-improved clay roadbed having a water drainage structure at the edge of a road surface cushion according to claim 1, wherein the clay roadbed comprises: the drainage structure is a water seepage part formed by a geotechnical drainage mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921313464.2U CN210916845U (en) | 2019-08-14 | 2019-08-14 | Cold region improved clay roadbed with water drainage structure added at edge of pavement cushion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921313464.2U CN210916845U (en) | 2019-08-14 | 2019-08-14 | Cold region improved clay roadbed with water drainage structure added at edge of pavement cushion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210916845U true CN210916845U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921313464.2U Active CN210916845U (en) | 2019-08-14 | 2019-08-14 | Cold region improved clay roadbed with water drainage structure added at edge of pavement cushion layer |
Country Status (1)
| Country | Link |
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| CN (1) | CN210916845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341427A (en) * | 2022-09-06 | 2022-11-15 | 东南大学 | Highway seepage-proofing drainage structure based on capillary isolation principle and construction method thereof |
-
2019
- 2019-08-14 CN CN201921313464.2U patent/CN210916845U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341427A (en) * | 2022-09-06 | 2022-11-15 | 东南大学 | Highway seepage-proofing drainage structure based on capillary isolation principle and construction method thereof |
| CN115341427B (en) * | 2022-09-06 | 2024-05-28 | 东南大学 | Highway seepage-proofing drainage structure based on capillary isolation principle and construction method thereof |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231026 Address after: 3T Area, Floor 3, No. 6 Shunyi Street, Nangang District, Harbin, Heilongjiang Province, 150000 Patentee after: Heilongjiang Darong Construction Engineering Technology Consulting Co.,Ltd. Address before: Group 2, Fulin Village, Shanghewan Town, Changchun City, Jilin Province, 130515 Patentee before: Sun Cheng |