CN208884292U - Soft soil roadbed and normal roadbed intersection anti-settling structure - Google Patents
Soft soil roadbed and normal roadbed intersection anti-settling structure Download PDFInfo
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- CN208884292U CN208884292U CN201821297276.0U CN201821297276U CN208884292U CN 208884292 U CN208884292 U CN 208884292U CN 201821297276 U CN201821297276 U CN 201821297276U CN 208884292 U CN208884292 U CN 208884292U
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Abstract
The utility model discloses a kind of soft soil roadbed and normal roadbed intersection anti-settling structures, it is placed on treatment of soft foundation section and normal roadbed section intersection comprising sand, rubble drainage blanket, the first three-dimensional geogrid, roadbed, the second three-dimensional geogrid, lower roadbed, third three-dimensional geogrid, the upper roadbed, road surface structare layer set gradually from the bottom up.The utility model can prevent soft soil roadbed and normal roadbed section intersection differential settlement, to improve road surface stability.
Description
Technical field
The utility model relates to roadbed subsidence prevention and control fields, and in particular to a kind of soft soil roadbed anti-with normal roadbed intersection
Settle structure.
Background technique
In highway engineering, the changeover portion between soft soil roadbed and normal roadbed section is the weak link of roadbed, for a long time by
Under the action of the load of road surface, it is possible that the vertically and horizontally cracking of roadbed, makes road surface differential settlement occur, entire roadbed is influenced
Use.Therefore, we are there is an urgent need to a kind of structure that can prevent soft soil roadbed and normal roadbed section intersection differential settlement,
To improve the stability on entire road surface.
Utility model content
The purpose of this utility model is to provide a kind of soft soil roadbed and normal roadbed intersection anti-settling structure, the structures
Soft soil roadbed and normal roadbed section intersection differential settlement can be prevented, to improve road surface stability.
The technical scheme adopted by the utility model is
A kind of soft soil roadbed and normal roadbed intersection anti-settling structure, is placed in treatment of soft foundation section and normal roadbed section
On intersection comprising sand, rubble drainage blanket, the first three-dimensional geogrid, the roadbed, the two or three set gradually from the bottom up
To TGXG, lower roadbed, third three-dimensional geogrid, upper roadbed, road surface structare layer.
According to the above scheme, the laying depth of sand, rubble drainage blanket is not less than 50cm；The two sides of sand, rubble drainage blanket
Roadbed 0.8-1.5m, preferably 1m are stretched out respectively, so that structure is more stable, to realize the purpose for reducing sedimentation.
According to the above scheme, the first three-dimensional geogrid, the second three-dimensional geogrid, third three-dimensional geogrid are on weak soil road
Base segment and the laying length of normal roadbed section are not less than 15m, the first three-dimensional geogrid, the second three-dimensional geogrid, third
Roadbed 1-1.5m is stretched out in the two sides of three-dimensional geogrid respectively, so that structure is more stable, to realize the purpose for reducing sedimentation.
According to the above scheme, the first three-dimensional geogrid, the second three-dimensional geogrid, the two sides of third three-dimensional geogrid are logical
U-shaped nail anchoring is crossed, so that structure is more stable.
According to the above scheme, sand, rubble drainage blanket, the first three-dimensional geogrid, roadbed, the second three-dimensional geogrid, under
Roadbed, third three-dimensional geogrid, upper roadbed, pavement structure are arranged in parallel.
The utility model has the beneficial effects that:
Using three layers of three-dimensional geogrid, it can increase subgrade stability, reduce settlement of subgrade, and easy construction,
Construction quality is easy to get control；
By being laid with sand, rubble drainage blanket, the first three-dimensional on treatment of soft foundation section and normal roadbed section intersection
TGXG, roadbed, the second three-dimensional geogrid, lower roadbed, third three-dimensional geogrid, upper roadbed, road surface structare layer, thus
Highway soft soil roadbed and normal basement transition stage are reinforced, changeover portion roadbed overall stability can be effectively promoted, reduce
A section settlement of subgrade is crossed, the quality of soft soil roadbed and normal this road weak link of basement transition stage, Jin Erti are improved
The stability of high entire road, extends Road Service Life；
Simple and reasonable for structure, economically feasible, anti-differential settlement effect are ideal.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram of three-dimensional geogrid；
Fig. 3 is the structural schematic diagram of U-shaped nail；
Wherein, 1, treatment of soft foundation section, 2, normal roadbed section, 3, sand, rubble drainage blanket, 4, first three-dimensional geotechnique's lattice
Grid, 5, roadbed, the 6, second three-dimensional geogrid, 7, lower roadbed, 8, third three-dimensional geogrid, 9, upper roadbed, 10, pavement structure
Layer, 11, U-shaped nail, 12, changeover portion process range.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Referring to figures 1-3, a kind of soft soil roadbed and normal roadbed intersection anti-settling structure, is placed in treatment of soft foundation section 1
On normal 2 intersection of roadbed section comprising sand, the rubble drainage blanket 3, the first three-dimensional geotechnique set gradually from the bottom up
Grid 4, roadbed 5, the second three-dimensional geogrid 6, lower roadbed 7, third three-dimensional geogrid 8, upper roadbed 9, road surface structare layer 10.
Sand, rubble drainage blanket 3 laying depth be 50cm, and roadbed 1m is stretched out in the two sides of sand, rubble drainage blanket 3 respectively.First
Three-dimensional geogrid 4, the second three-dimensional geogrid 6, third three-dimensional geogrid 8 Soft Ground and normal roadbed section paving
If length is not less than 15m, the two sides of the first three-dimensional geogrid 4, the second three-dimensional geogrid 6, third three-dimensional geogrid 8
Roadbed 1.5m is stretched out respectively, and its two sides passes through U-shaped 11 anchoring of nail.
Construction procedure are as follows:
1, changeover portion process range 12 is determined；
2, in changeover portion process range 12, it is thick that 50cm is laid on treatment of soft foundation section 1 and normal 2 intersection of roadbed section
Sand, rubble drainage blanket 3；
3, after the completion of sand, rubble drainage blanket 3 are laid with, it is laid with the first three-dimensional geogrid 4, the first three-dimensional geotechnique on it
Roadbed 1.5m is stretched out in 4 two sides of grid respectively；And first three-dimensional geogrid 4 it is long in the laying of Soft Ground and normal roadbed section
Degree is not less than 15m, and 4 two sides of the first three-dimensional geogrid (both ends along the longitudinal direction) are anchored at sand with U-shaped nail 11, rubble drains
On bed course 3；After the completion of first three-dimensional geogrid 4 is laid with, covering influences reinforced action to avoid solarization aging in time；
4, it backfilled roadbed supported 5 on the first three-dimensional geogrid 4, and is compacted；
5, the second three-dimensional geogrid 6, the second three-dimensional geogrid 6 and the first three-dimensional geogrid 4 are laid on roadbed 5
In parallel；Roadbed (lower roadbed 7) 1.5m is stretched out in second three-dimensional geogrid, 6 two sides respectively；And second three-dimensional geogrid 6 in weak soil
The laying length of roadbed section and normal roadbed section is not less than 15m, 6 two sides of the second three-dimensional geogrid (both ends along the longitudinal direction)
It is anchored on roadbed 5 with U-shaped nail 11；After the completion of second three-dimensional geogrid 6 is laid with, covering is in time to avoid solarization aging, shadow
Ring reinforced action；
6, roadbed 7 is set on 6 upper berth of the second three-dimensional geogrid, and is compacted；
7, third three-dimensional geogrid 8, third three-dimensional geogrid 8 and first three-dimensional geotechnique's lattice are laid on lower roadbed 7
Grid 4 are parallel；Roadbed (lower roadbed 7) 1.5m is stretched out in 8 two sides of third three-dimensional geogrid respectively；And third three-dimensional geogrid 8 exists
Soft Ground and the laying length of normal roadbed section are not less than 15m, and 8 two sides of third three-dimensional geogrid are (along the longitudinal direction
Both ends) it is anchored on lower roadbed 7 with U-shaped nail 11；After the completion of third three-dimensional geogrid 8 is laid with, covering is in time to avoid solarization
Aging influences reinforced action；
8, it is laid with upper roadbed 9 on third three-dimensional geogrid 8, and is compacted；
9, after upper 9 making of roadbed compacting, 10 making of road surface structare layer is carried out.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (5)
1. a kind of soft soil roadbed and normal roadbed intersection anti-settling structure is placed in treatment of soft foundation section and normal roadbed section and hands over
On at boundary, it is characterised in that: including the sand, rubble drainage blanket, the first three-dimensional geogrid, road set gradually from the bottom up
Base, the second three-dimensional geogrid, lower roadbed, third three-dimensional geogrid, upper roadbed, road surface structare layer.
2. according to claim 1 soft soil roadbed with normal roadbed intersection anti-settling structure, it is characterised in that: sand, broken
The laying depth of stone drainage blanket be not less than 50 cm, sand, rubble drainage blanket two sides stretch out roadbed 0.8-1.5m respectively.
3. according to claim 1 soft soil roadbed and normal roadbed intersection anti-settling structure, it is characterised in that: the one or three
It is long in the laying of Soft Ground and normal roadbed section to TGXG, the second three-dimensional geogrid, third three-dimensional geogrid
Degree be not less than 15m, the first three-dimensional geogrid, the second three-dimensional geogrid, third three-dimensional geogrid two sides stretch respectively
Roadbed 1-1.5m out.
4. according to claim 1 or 3 soft soil roadbed and normal roadbed intersection anti-settling structure, it is characterised in that: the
One three-dimensional geogrid, the second three-dimensional geogrid, third three-dimensional geogrid two sides pass through U-shaped nail anchor.
5. according to claim 1 soft soil roadbed and normal roadbed intersection anti-settling structure, it is characterised in that: the one or three
To TGXG, the second three-dimensional geogrid, third three-dimensional geogrid parallel laid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297276.0U CN208884292U (en) | 2018-08-13 | 2018-08-13 | Soft soil roadbed and normal roadbed intersection anti-settling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821297276.0U CN208884292U (en) | 2018-08-13 | 2018-08-13 | Soft soil roadbed and normal roadbed intersection anti-settling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208884292U true CN208884292U (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821297276.0U Active CN208884292U (en) | 2018-08-13 | 2018-08-13 | Soft soil roadbed and normal roadbed intersection anti-settling structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549600A (en) * | 2020-05-06 | 2020-08-18 | 东南大学 | A subgrade treatment structure at the junction of road widening on a deep soft foundation |
| CN112813759A (en) * | 2021-01-25 | 2021-05-18 | 罗志球 | Soft soil roadbed and normal roadbed juncture prevent subsiding structure |
-
2018
- 2018-08-13 CN CN201821297276.0U patent/CN208884292U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111549600A (en) * | 2020-05-06 | 2020-08-18 | 东南大学 | A subgrade treatment structure at the junction of road widening on a deep soft foundation |
| CN112813759A (en) * | 2021-01-25 | 2021-05-18 | 罗志球 | Soft soil roadbed and normal roadbed juncture prevent subsiding structure |
| CN112813759B (en) * | 2021-01-25 | 2022-05-17 | 中铁二十三局集团第一工程有限公司 | Soft soil roadbed and normal roadbed juncture prevent subsiding structure |
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