CN207619863U - A kind of box culvert backfill structure - Google Patents
A kind of box culvert backfill structure Download PDFInfo
- Publication number
- CN207619863U CN207619863U CN201721661715.7U CN201721661715U CN207619863U CN 207619863 U CN207619863 U CN 207619863U CN 201721661715 U CN201721661715 U CN 201721661715U CN 207619863 U CN207619863 U CN 207619863U
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- CN
- China
- Prior art keywords
- box culvert
- buffer strip
- backfills
- knee wall
- backfill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of box culverts to backfill structure, and the arch buffer strip for being included in the setting of box culvert cover top surface, is equipped with top back filled region at the knee wall being respectively set on the outside of the both walls of box culvert at the top of buffer strip and knee wall.The backfill structure of the utility model can reduce the stress to box culvert structure, while increase the safety stock of box culvert structure stabilization.Construction is simple, backfilling material can draw materials nearby, and it is all common rolling apparatus to backfill used equipment, without additional equipment investment.
Description
Technical field
The utility model backfills structure more particularly to a kind of box culvert.
Background technology
Existing box culvert backfill structure is usually in the top plate of box culvert and side wall both sides using soil-stone material, completely decomposed
The backfills material such as material, loess is backfilled.Due to the limitation of orographic condition, the three-dimensional-structure horizontal span of certain box culverts is greatly, downstream
Flow direction structure is long, overlying is banketed height, under flood overcurrent operating mode, box culvert by internal water pressure, external water pressure, the gravity that bankets, grind and have
The compound actions such as gravity and vibration force, deformation and service condition are complicated.These boundary conditions all give the stable structure and peace of box culvert
Row for the national games produces large effect or even certain box culverts and just produces crack in construction and operation phase concrete structure.
To avoid the above problem, general solution is to increase the structure size of box culvert side wall and top plate, by box culvert
Structure is done more thick and solid, but this way can increase Structural Engineering amount, is increased construction investment, is slowed down speed of application.
Utility model content
It can be protected in the case where not increasing box culvert structure dimensional conditions in view of the above-mentioned problems, the utility model is intended to provide one kind
Box culvert structure is demonstrate,proved to stablize and safe backfill structure.
The technical solution that the utility model solves the problems, such as is：A kind of box culvert backfill structure, is included in box culvert cover top surface
The arch buffer strip of setting, is equipped with the knee wall being respectively set on the outside of the both walls of box culvert at the top of buffer strip and knee wall
Top back filled region.
In said program, buffer strip is overarched, allows top back filled region to be applied to box culvert vertical direction by arching
Stress transfer to the knee wall of both sides, reduce to the stress of box culvert structure, improve the stability of box culvert structure.
Further, the section-bottom width of the buffer strip and box culvert top plate are wide, buffer strip longitudinal length and top plate
Longitudinal length is identical.
Preferably, the buffer strip is backfilled using full blast material or loess.
Further, the knee wall and side wall are contour.
Preferably, the knee wall is rolled using the backfill of high wind material.It enables to support using this backfill material
Wall is more closely knit, and the ability of endurance is stronger.
Further, the top back filled region is backfilled using soil-stone material or full blast material or loess.Top
Backfill conventionally carry out.
Correspondingly, earth-filling method includes the following steps：
a）High wind material is backfilled on the outside of the box culvert both walls made, symmetrical layered rolling forms closely knit knee wall；
b）Full blast material or loess are backfilled in box culvert cover top surface, and rolls and to form arch buffer strip；
c）It backfills to form top go back to using soil-stone material or full blast material or loess at the top of buffer strip and knee wall
Fill out area.
The remarkable result of the utility model is：
1, the power suffered by script box culvert top can be passed to the backfill support of box culvert both sides by the backfill structure of the utility model
On wall, knee wall is allowed to share the vertical force at top, forms the effect of expected arch, in the case where not increasing box culvert structure size,
The stress to box culvert structure is reduced, while increasing the safety stock of box culvert structure stabilization.
2, consider that backfilling of earthwork posterior settlement, the setting of buffer strip domes can play the work of settlement reservation superelevation
With.
3, construction is simple is quick, and backfilling material can draw materials nearby, and it is all common rolling apparatus, nothing to backfill used equipment
Additional equipment investment, there is no increase construction investment.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is that the utility model box culvert backfills structure transverse face figure.
Fig. 2 is that the utility model box culvert backfills structural perspective.
In figure：1- box culverts, 2- buffer strips, 3- knee walls, the tops 4- back filled region, 11- top plates, 12- side walls.
Specific implementation mode
As shown in Fig. 1~2, a kind of box culvert backfill structure is included in the arch buffer strip of 11 upper surface of box culvert top plate setting
2, the knee wall 3 that is respectively set in the outside of both walls of box culvert 1 12 is equipped with top back filled region in buffer strip 2 and 3 top of knee wall
4。
The section-bottom width and box culvert top plate 11 of the buffer strip 2 are wide, and 2 longitudinal length of buffer strip is longitudinally long with top plate
It spends identical.The knee wall 3 and side wall 12 are contour.
The buffer strip 2 is backfilled using full blast material or loess.The knee wall 3 is rolled using the backfill of high wind material
It forms.The top back filled region 4 is backfilled using soil-stone material or full blast material or loess.
Correspondingly, earth-filling method includes the following steps：
a）High wind material is backfilled in 1 both walls of box culvert, 12 outside made, symmetrical layered rolling forms closely knit support
Wall 3.
b）Full blast material or loess are backfilled in 11 upper surface of box culvert top plate, and rolls and to form arch buffer strip 2.Buffer strip 2
In try not backfill oversize rock material, avoid building stones wedge angle from causing stress concentration to 1 structure roof 11 of box culvert in roller compaction process
Effect.
c）It backfills to form top using soil-stone material or full blast material or loess in buffer strip 2 and 3 top of knee wall
Back filled region 4.
Claims (6)
1. a kind of box culvert backfills structure, it is characterised in that：It is included in box culvert top plate（11）The arch buffer strip of upper surface setting
（2）, in box culvert（1）Both walls（12）The knee wall that outside is respectively set（3）, in buffer strip（2）And knee wall（3）Top is set
There is top back filled region（4）.
2. box culvert according to claim 1 backfills structure, it is characterised in that：The buffer strip（2）Section-bottom width
With box culvert top plate（11）It is wide, buffer strip（2）Longitudinal length is identical as top plate longitudinal length.
3. box culvert according to claim 1 or 2 backfills structure, it is characterised in that：The buffer strip（2）Using full blast material
Or loess backfills.
4. box culvert according to claim 1 backfills structure, it is characterised in that：The knee wall（3）With side wall（12）It is contour.
5. box culvert according to claim 1 or 4 backfills structure, it is characterised in that：The knee wall（3）Using high wind material
Backfill rolls.
6. box culvert according to claim 1 backfills structure, it is characterised in that：The top back filled region（4）It is mixed using native stone
It closes material or full blast material or loess backfills.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661715.7U CN207619863U (en) | 2017-12-04 | 2017-12-04 | A kind of box culvert backfill structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721661715.7U CN207619863U (en) | 2017-12-04 | 2017-12-04 | A kind of box culvert backfill structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619863U true CN207619863U (en) | 2018-07-17 |
Family
ID=62825173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721661715.7U Active CN207619863U (en) | 2017-12-04 | 2017-12-04 | A kind of box culvert backfill structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207619863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086176A (en) * | 2017-12-04 | 2018-05-29 | 中国电建集团中南勘测设计研究院有限公司 | A kind of box culvert backfill structure and earth-filling method |
| CN110438855A (en) * | 2019-07-19 | 2019-11-12 | 中国十七冶集团有限公司 | A kind of construction method of undercrossing tunnel bridges and culverts railway roadbed backfill |
-
2017
- 2017-12-04 CN CN201721661715.7U patent/CN207619863U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086176A (en) * | 2017-12-04 | 2018-05-29 | 中国电建集团中南勘测设计研究院有限公司 | A kind of box culvert backfill structure and earth-filling method |
| CN110438855A (en) * | 2019-07-19 | 2019-11-12 | 中国十七冶集团有限公司 | A kind of construction method of undercrossing tunnel bridges and culverts railway roadbed backfill |
| CN110438855B (en) * | 2019-07-19 | 2020-12-04 | 中国十七冶集团有限公司 | Construction method for backfilling underneath-crossing railway bridge and culvert road bed |
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