CN209243478U - A kind of road structure suitable for saline soil area - Google Patents
A kind of road structure suitable for saline soil area Download PDFInfo
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- CN209243478U CN209243478U CN201821403680.1U CN201821403680U CN209243478U CN 209243478 U CN209243478 U CN 209243478U CN 201821403680 U CN201821403680 U CN 201821403680U CN 209243478 U CN209243478 U CN 209243478U
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Abstract
The utility model provides a kind of road structure suitable for saline soil area, packing course is changed including road surface structare layer and roadbed, the roadbed changes packing course and is located on roadbed bottom surface, roadbed, which changes, is equipped with road surface structare layer on packing course, roadbed changes between packing course bottom surface and roadbed bottom surface and is also equipped with insulating course, wherein roadbed, which changes also to dig below packing course, french drain, the insulating course is from below and two sides package roadbed changes packing course and french drain, insulating course and roadbed change the road surface structare layer above packing course and form enclosed construction, wherein insulating course and roadbed change the gradient that there is 2%-5% in packing course bottom surface, wherein it is consistent with roadbed to change packing course inclined bottom surface direction for insulating course, french drain is located at roadbed and changes packing course lowest part, the gutter of oriented lower recess is dug in road surface structare layer two sides.It is simple and practical in structure, the service life of roadbed is effectively raised, and reduce the possibility of disease generation, the security risk of road reduces.
Description
Technical field
The utility model belongs to roadbed filling construction applications, and in particular to a kind of roadbed knot suitable for saline soil area
Structure.
Background technique
It is well known that the compound that salt is made of metal ion (including ammonium ion) and acid ion.In water by it
Solubility size, be divided into lyotropic salt (such as sodium chloride, sodium sulphate, magnesium sulfate), middle dissolved salt (calcium sulfate) and difficulty soluble salt (carbonic acid
Calcium) three kinds.Alkaline earth is that soil colloid absorption Sodium by substitution ion is more, or contains sodium carbonate, sodium bicarbonate, thus anti-in alkalinity
The soil answered.And salinized soil is the general name of different degrees of salinization of soil figure.In highway engineering, lyotropic salt within the scope of 1.0m below earth's surface
The soil that content is averagely greater than 0.3% is salinized soil.
Salinized soil will cause Major Diseases below to roadbed:
1, salt is swollen: under cold service, salinity water suction crystallization, volume expansion causes roadbed, road surface swelling cracking occur,
Road shoulder and side slope are loosely degraded；
2, molten to fall into: under the action of high temperature, crystalline solid dries out, and volume reduces, and density of roadbed reduces, in load
Under effect, easily there is collapse-deformation in roadbed, road surface；
3, rainfall is met, the lyotropic salt in the soil body is dissolved in water, and subgrade strength is drastically reduced with stability, road structure
It is destroyed, it is serious to be likely to occur pit-hole, collapsible settement occurs；
4, after crack occur in road surface, roadbed, spring level of ground water rises, and easily generates and freezes account, in the effect of vehicular load
Under, it bursts and become muddy when a thaw sets in, normal operation is affected, and service life shortens, and causes the waste of resource；
5, there is corrosion function to materials such as cement, pitch, steel.
These diseases as caused by salinized soil directly affect the service life of road, and cause to road vehicle
Security risk.
Utility model content
The purpose of the utility model is to provide a kind of road structures suitable for saline soil area, to improve saline soil area
The durability degree of roadbed, can effectively solve capillarity satisfy the need base bring harm.
The utility model is realized by following technological means, a kind of road structure suitable for saline soil area, packet
It includes road surface structare layer and roadbed changes packing course, the roadbed changes packing course and is located on roadbed bottom surface, and roadbed, which changes, is equipped with road surface on packing course
Structure sheaf, roadbed, which changes between packing course bottom surface and roadbed bottom surface, is also equipped with insulating course, wherein roadbed change below packing course also dig have it is blind
Ditch, for the insulating course from below and two sides package roadbed changes packing course and french drain, insulating course and roadbed change the road surface above packing course
Structure sheaf forms enclosed construction, and wherein insulating course and roadbed change the gradient that there is 2%-5% in packing course bottom surface, and wherein insulating course and roadbed change
Packing course inclined bottom surface direction is consistent, and french drain is located at roadbed and changes packing course lowest part, and the row of oriented lower recess is dug in road surface structare layer two sides
Ditch.
Further, the french drain is inverted trapezoidal, and french drain depth is not less than 60cm, and french drain bottom width is not less than 60cm.
Further, the grit for being 2-4cm filled with partial size in the french drain.
Further, the draining ditch depth is greater than 40cm, and gutter bottom width is not less than 200cm, and wherein gutter is leaned on
The ramp slope of nearly road surface structare layer side is 25%, and other side ramp slope is 50%.
Further, the insulating course uses two cloth, one film composite earthwork cloth material.
Further, the road surface structare layer has 1.5% gradient, and changes packing course inclined bottom surface with insulating course and roadbed
Direction is consistent.
Further, the roadbed, which changes, fills non-salty-soil in packing course.
Further, it is not less than the road shoulder of 75cm between the road surface structare layer and gutter for width.
The utility model has the beneficial effects that: 1, can effectively organize moisture and salinity to immerse in road structure, improve
The durability of road structure.2, effectively the moisture in roadbed and road surface can be discharged for inclined road structure, Ke Yiyou
Effect reduces the water enchroachment (invasion) evil that roadbed is subject to.3, deeper gutter reduces the level of ground water under roadbed, further improves roadbed
Durability.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Part A structure enlargement diagram in Fig. 2 bitmap 1；
Fig. 3 is A ' part-structure enlarged diagram in Fig. 1.
1, road surface structare layer in figure；2, roadbed changes packing course；3, insulating course；4, gutter；5, french drain.
Specific embodiment
It is illustrated below in conjunction with Figure of description,
[embodiment 1]
As shown in Figure 1 to Figure 3, a kind of road structure suitable for saline soil area, including road surface structare layer 1 and roadbed change
Packing course 2, the roadbed change packing course 2 and are located on roadbed bottom surface, and roadbed, which changes on packing course, is equipped with road surface structare layer 1, and roadbed changes packing course 2
Insulating course 3 is also equipped between bottom surface and roadbed bottom surface, wherein roadbed, which changes 2 lower section of packing course and also digs, french drain 5, the insulating course 3
From below and two sides package roadbed changes packing course 2 and french drain 5, and insulating course 3 and roadbed change the formation of road surface structare layer 1 of 2 top of packing course
Enclosed construction, the salinity immersion roadbed for changing 2 two sides of packing course and lower section which prevent roadbed change in packing course 2, wherein the top of french drain 5
Portion closely 3 bottom of insulating course, wherein insulating course 3 and roadbed change the gradient that there is 2%-5% in 2 bottom surface of packing course to insulating course, wherein insulating course 3
It is consistent that 2 inclined bottom surface direction of packing course is changed with roadbed, and french drain 5 is located at roadbed and changes 2 lowest part of packing course, and 1 two sides of road surface structare layer, which are dug, to be had
To the gutter of lower recess 4.
The french drain 5 is inverted trapezoidal, and 5 depth of french drain is not less than 60cm, and 5 bottom width of french drain is not less than 60cm.In roadbed
The moisture in portion can flow into french drain 5 along slope, and roadbed is discharged from the bottom of french drain 5.
The grit for being 2-4cm filled with partial size in the french drain 5.
The gutter 4 is deep to be greater than 40cm, and 4 bottom width of gutter is not less than 200cm, and deeper gutter 4 can drop
Water level below low path based structures, so that road structure is safer.Wherein gutter 4 is close to the oblique of 1 side of road surface structare layer
The slope gradient is 25%, and other side ramp slope is 50%.
The insulating course 3 uses two cloth, one film composite earthwork cloth material.
The road surface structare layer 1 has 1.5% gradient, and changes 2 inclined bottom surface direction one of packing course with insulating course 3 and roadbed
It causes, the ponding on road surface can be discharged in time.
It is not less than the road shoulder of 75cm between the road surface structare layer 1 and gutter 4 for width.
The roadbed, which changes, fills non-salty-soil in packing course 2, salinity and moisture can be further prevented to penetrate into roadbed insulating course
In the structure of top, road structure is damaged.
In construction, roadbed bottom surface is dug to the slope for being 2%-5% for the gradient first, then the position minimum in roadbed bottom surface
French drain 5 is excavated, is then laid with insulating course 3 along the profile of roadbed bottom surface and french drain 5, the sand that partial size is 2-4cm is filled into french drain 5
Gravel is laid with roadbed on insulating course 3 again later and changes packing course 2, and also wrapped up the two sides that roadbed changes packing course 2 with insulating course 3,
Leave behind the top that roadbed changes packing course 2.The top for changing packing course 2 to roadbed is laid with road surface structare layer, and such insulating course 3 is tied with road surface
Structure layer 1 forms an enclosed construction, and roadbed is changed packing course 2 and the closing of french drain 5 wherein, is spread again in road surface structare layer two sides later
If road shoulder, road shoulder changes the primary excavation gutter 4 of packing course 2 far from roadbed.
The well-known components and common structure of component and the structure category industry that the present embodiment does not describe in detail or common hand
Section, does not describe one by one here.
Claims (8)
1. a kind of road structure suitable for saline soil area, it is characterised in that: change packing course including road surface structare layer (1) and roadbed
(2), the roadbed changes packing course (2) and is located on roadbed bottom surface, and roadbed, which changes on packing course, is equipped with road surface structare layer (1), and roadbed, which changes, to be filled out
Insulating course (3) are also equipped between layer (2) bottom surface and roadbed bottom surface, wherein roadbed, which changes also to dig below packing course (2), french drain (5),
The insulating course (3) is from below and two sides package roadbed changes packing course (2) and french drain (5), and insulating course (3) and roadbed change packing course (2)
The road surface structare layer (1) of top forms enclosed construction, and wherein insulating course (3) and roadbed change the slope that there is 2%-5% in packing course (2) bottom surface
Degree, wherein it is consistent to change packing course (2) inclined bottom surface direction for insulating course (3) and roadbed, and french drain (5) is located at roadbed, and to change packing course (2) minimum
Place, the gutter (4) of oriented lower recess is dug in road surface structare layer (1) two sides.
2. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the french drain
It (5) is inverted trapezoidal, french drain (5) depth is not less than 60cm, and french drain (5) bottom width is not less than 60cm.
3. a kind of road structure suitable for saline soil area according to claim 2, it is characterised in that: the french drain
(5) grit for being 2-4cm filled with partial size in.
4. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the gutter
(4) deep to be greater than 40cm, gutter (4) bottom width is not less than 200cm, and wherein gutter (4) are close to road surface structare layer (1) side
Ramp slope be 25%, other side ramp slope be 50%.
5. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the insulating course
It (3) is two cloth, one film composite earthwork cloth material.
6. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the road surface knot
Structure layer (1) has 1.5% gradient, and it is consistent with insulating course (3) and roadbed to change packing course (2) inclined bottom surface direction.
7. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the road surface knot
It is not less than the road shoulder of 75cm between structure layer (1) and gutter (4) for width.
8. a kind of road structure suitable for saline soil area according to claim 1, it is characterised in that: the roadbed changes
Non-salty-soil is filled in packing course (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403680.1U CN209243478U (en) | 2018-08-29 | 2018-08-29 | A kind of road structure suitable for saline soil area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403680.1U CN209243478U (en) | 2018-08-29 | 2018-08-29 | A kind of road structure suitable for saline soil area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209243478U true CN209243478U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821403680.1U Active CN209243478U (en) | 2018-08-29 | 2018-08-29 | A kind of road structure suitable for saline soil area |
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| CN (1) | CN209243478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900177A (en) * | 2021-02-02 | 2021-06-04 | 青海省交通投资有限公司 | Composite geomembrane salt-separating water-blocking partition layer structure |
-
2018
- 2018-08-29 CN CN201821403680.1U patent/CN209243478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900177A (en) * | 2021-02-02 | 2021-06-04 | 青海省交通投资有限公司 | Composite geomembrane salt-separating water-blocking partition layer structure |
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