CN206706479U - A kind of light-duty embankment suitable for deep soft soil foundation - Google Patents
A kind of light-duty embankment suitable for deep soft soil foundation Download PDFInfo
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- CN206706479U CN206706479U CN201720271162.8U CN201720271162U CN206706479U CN 206706479 U CN206706479 U CN 206706479U CN 201720271162 U CN201720271162 U CN 201720271162U CN 206706479 U CN206706479 U CN 206706479U
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- embankment
- duty
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- soft soil
- soil foundation
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 19
- 238000011065 in-situ storage Methods 0.000 claims description 11
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- Railway Tracks (AREA)
- Road Paving Structures (AREA)
- Foundations (AREA)
Abstract
Roadbed building field is the utility model is related to, discloses a kind of light-duty embankment suitable for deep soft soil foundation.In order to suitable for deep soft soil foundation, mitigate embankment deadweight, a filler groove is designed with the middle part of embankment, and by being sequentially filled bubble concrete layer from bottom to up in the trench, water impervious layer and road surface layer of subgrade bed enrich embankment, because the density of bubble concrete layer is smaller and its height can increase and heightening design with depth of fill, it is possible thereby to embankment gravity load is greatly reduced, reduce the load-bearing demand to soft soil foundation, shorten the designing pile length to embankment bottom, the problem of so as to avoid causing pile body unstable failure, ensure the resistance to overturning of embankment bottom pile slab structure and the result of prevention of embankment.In addition, the light-duty embankment also has the advantages that easily construction, construction cost is low and remarkable in economical benefits, it is easy to practical application and popularization.
Description
Technical field
Roadbed building field is the utility model is related to, in particular it relates to a kind of light-duty road suitable for deep soft soil foundation
Dike.
Background technology
In order to meet the sedimentation design requirement of the roadbeds such as railway, the generally use such as Soil-cement in soft clay area
Stake, lime pile, cement, flyash and crushed stone (CFG, Cement Fly-ash Gravel) stake, high-pressure rotary jet grouting pile, pile for prestressed pipe,
The basement process such as reinforced concrete pile net structure and armored concrete pile slab structure structure improves the bearing capacity of soft soil foundation.
When in face of deep soft soil foundation (i.e. weak soil thickness is more than 50M), such as cement mixing method, lime pile, cement
The basement process such as flyash gravel pile and high-pressure rotary jet grouting pile structure will be no longer applicable because that can not meet such reinforcement depth.It is and pre-
Stress pile tube is due to belonging to Squeezing Soil Pile, when simultaneously in the large-area construction nearby such as existing railway line, caused excess pore water
Pressure and soil compaction effect easily cause the skew of existing railway roadbed, bridge and other structures, cause potential safety hazard.Although steel
Reinforced concrete pile net structure and armored concrete pile slab structure can preferably solve the problems, such as foregoing basement process structure, still
For the higher embankment of filled height (such as railroad embankment), because conventional filler gravity load is big, designing pile length mistake will be caused
Deep (generally requiring more than 80M) so that slenderness ratio is excessive, easily causes pile body unstable failure, and then causes pile slab structure overall
Stability declines, and certain security risk be present, while construction cost is also higher, and economy is poor.
Utility model content
For foregoing when in face of deep soft soil foundation, filled height has that filler gravity load is big, sets compared with high embankment
The problem of stake is long too deep, resistance to overturning decline and construction cost is high is counted, the utility model provides a kind of suitable for deep soft
The light-duty embankment of soil base.
The technical solution adopted in the utility model, there is provided a kind of light-duty embankment suitable for deep soft soil foundation, including
For being embedded in the pile slab structure of underground, the light-duty roadbed also includes being separately fixed at left and right sides of the pile slab structure
Concrete protective wall；The pile slab structure and two concrete protective walls of left and right surround groove together, and in the trench under
It is supreme to be sequentially filled bubble concrete layer, water impervious layer and road surface layer of subgrade bed.
Optimization, in addition to some dowels；The both ends of the dowel respectively embedded in the concrete protective wall and
In the bubble concrete layer.Further optimize, the dowel is longitudinally disposedSteel bar.
Optimization, the pile slab structure includes bearing sheet and cast-in-situ bored pile；Divide at left and right sides of the top surface of the bearing sheet
The concrete protective wall is not fixedly connected with, and the bottom surface of the bearing sheet is fixedly connected with the more drillings in discrete arrangement and filled
Note stake.Further optimize, the pile slab structure also includes joist；It is provided with and can matches somebody with somebody with the bearing sheet in the top surface of the joist
The groove of conjunction, the cast-in-situ bored pile is also fixedly connected with the bottom surface of the joist；The joist is located at the bearing sheet
Lower section or the lower section of adjacent two bearing sheets stitching portion, and hold the bearing sheet in the groove.Optimize in detail, the brill
Hole pouring pile is set in a row along route direction interval.
Optimization, opened up at the top of the concrete protective wall and in the road surface layer of subgrade bed with the wall body of floor
There is osculum.
Optimization, the pile slab structure and/or the concrete protective wall are poured by armored concrete and formed.
Optimization, the water impervious layer uses HDPE anti-seepage geomembranes.
Optimization, the road surface layer of subgrade bed is A groups packing layer or graded broken stone floor.
To sum up, using the light-duty embankment provided by the utility model suitable for deep soft soil foundation, there is following technology
Effect：(1) in order to conduct oneself with dignity suitable for deep soft soil foundation, mitigation embankment, a filler groove is designed with the middle part of embankment, and lead to
Cross and be sequentially filled bubble concrete layer, water impervious layer and road surface layer of subgrade bed from bottom to up in the trench to enrich embankment, due to bubble
The density of foam concrete layer is smaller and its thickness can increase and heightening design with depth of fill, it is possible thereby to make embankment gravity load
It is greatly reduced, reduces the load-bearing demand to soft soil foundation, shorten the designing pile length to embankment bottom, so as to avoids causing stake
The problem of body unstable failure, the resistance to overturning of embankment bottom pile slab structure is ensured, and efficiently control Embankment Subsidence；(2) by
In employing pile slab structure in embankment bottom, be compared to traditional ground processing structure (such as cement mixing method, lime pile,
CFG, high-pressure rotary jet grouting pile and pile for prestressed pipe etc.), foundation treatment depth can be made significantly to deepen, and to periphery
Environment influences very small (compared to pile for prestressed pipe), solves under deep soft soil foundation that high Embankment Subsidence is excessive and bearing capacity well
The problem of insufficient；(3) by designing water impervious layer and osculum, the water penetration of road surface layer of subgrade bed can be avoided to foam concrete
In, it is ensured that foam concrete is not corroded, and extends the building life of embankment；(4) the light-duty embankment also has and easily constructs, builds
The advantages that being set as this low and remarkable in economical benefits, is easy to practical application and popularization.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that the vertical section structure of the first light-duty embankment for being applied to deep soft soil foundation provided by the utility model is shown
It is intended to.
Fig. 2 is that the vertical section structure of the second provided by the utility model light-duty embankment for being applied to deep soft soil foundation is shown
It is intended to.
Fig. 3 is the schematic top plan view of pile slab structure provided by the utility model.
In above-mentioned accompanying drawing：1st, pile slab structure 101, bearing sheet 102, cast-in-situ bored pile 103, joist 2, concrete protective
Wall 201, osculum 3, bubble concrete layer 4, water impervious layer 5, road surface layer of subgrade bed 6, railroad track top layer 7, dowel
8th, above-ground route 9, layer line.
Embodiment
Hereinafter with reference to accompanying drawing, described in detail by way of example and provided by the utility model be applied to Deep Thick Soft Ground
The light-duty embankment of ground.Herein it should be noted that being used to help understand that this practicality is new for the explanation of these way of example
Type, but do not form to restriction of the present utility model.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, individualism B, while tri- kinds of situations of A and B, the terms be present
"/and " it is another affiliated partner relation of description, expression may have two kinds of relations, for example, A/ and B, can be represented：Individually deposit
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, it is that a kind of "or" is closed to typically represent forward-backward correlation object
System.
Embodiment one
Fig. 1 show it is provided by the utility model the first be applied to deep soft soil foundation light-duty embankment vertical section knot
Structure schematic diagram.The present embodiment provide the light-duty embankment suitable for deep soft soil foundation, including for be embedded in ground it
Under pile slab structure 1, the light-duty roadbed also includes the concrete protective wall for being separately fixed at the left and right sides of the pile slab structure 1
2；The pile slab structure 1 and two concrete protective walls 2 of left and right surround groove together, and fill out successively from bottom to up in the trench
Filled with bubble concrete layer 3, water impervious layer 4 and road surface layer of subgrade bed 5.
As shown in figure 1, in the structure of the light-duty embankment, the pile slab structure 1 is used to take root in the earth formation, and undertakes
The deadweight of top embankment structure and vehicular load, it can be, but not limited to be poured by armored concrete and forms.The concrete is protected
The foam concrete that the one side of retaining wall 2 is used in sidewise restraint groove, makes the bubble concrete layer 3 be in left, upper and right three-dimensional
Pressured state, the load performance of foam concrete is ensured, be on the other hand used to completely cut off inside and outside groove, foam concrete in protector
It will not be corroded by external substance, improve the durability of foam concrete, it equally can be, but not limited to be poured by armored concrete
Form.The bubble concrete layer 3 can be, but not limited to by cement, water, flyash, slag powders and foaming agent etc. by certain ratio
Example is thoroughly mixed to form slurry, and being then sufficiently mixed stirring with a certain proportion of, tiny enough stable bubble population again forms stream
Body, and the finally coagulation forming in groove, foam concrete made of this technology mode have from heavy and light, intensity height, performance
Stably, the advantages that orthostatic is strong, can be very good the filling demand for meeting trench interiors, and can make its thickness can be with depth of fill
Increase and heightening design.The water impervious layer 4 is used for the bubble concrete layer 3 for preventing rainwater from penetrating into lower section, further ensures that bubble
Foam concrete is not corroded, and extends the building life of embankment, for convenience construction laying, and it can be, but not limited to use HDPE
(High Density Polyethylene, also known as high density polyethylene (HDPE), low-pressure polyethylene, it is that a kind of crystallinity is high, nonpolar
Face and be in a certain degree of translucent waterproof material) anti-seepage geomembrane.The road surface layer of subgrade bed 5 is again roadbed cushion,
With convenient-laying road top layer, as shown in figure 1, being equipped with railroad track top layer 6 in the top of the road surface layer of subgrade bed 5, it can
With but be not limited to A groups packing layer (i.e. using the high quality filler in classification of filling material：Include lump stone, grading is good and particulate
Erratic boulder soil of the native content less than 15%, land pebble, gravelly soil, justify gravel soil, dust soil, gravelly sand, coarse sand and middle sand etc.) or grading it is broken
Rock layers.
Thus a kind of light-duty embankment structure suitable for deep soft soil foundation is present embodiments provided, by the middle part of embankment
Foam concrete of the filling with lightweight nature, can mitigate gravity load significantly, reduce the load-bearing demand to soft soil foundation, contract
The short designing pile length to embankment bottom, the problem of so as to avoid causing pile body unstable failure, ensure embankment bottom pile slab structure
Resistance to overturning, and efficiently control Embankment Subsidence.Simultaneously because employing pile slab structure in embankment bottom, can also improve
Structural bearing capacity and stability, and be easy to construct.
Optimization, in addition to some dowels 7；The both ends of the dowel 7 are embedded in the concrete protective wall 2 respectively
In the bubble concrete layer 3.As shown in figure 1, the dowel 7 is used to connect the concrete protective wall 2 and the bubble
Foam concrete layer 3, make their being integrally formed structures, lift the steadiness of embankment, in order to further strengthen both connection effects,
It can be, but not limited to be longitudinally disposedSteel bar.It is as shown in figure 1, describedThe opening of steel bar is straight down.
Optimization, the pile slab structure 1 includes bearing sheet 101 and cast-in-situ bored pile 102；The top surface of the bearing sheet 101
The left and right sides is respectively fixedly connected with the concrete protective wall 2, and it is in discrete cloth that the bottom surface of the bearing sheet 101, which is fixedly connected with more,
The cast-in-situ bored pile 102 put.As shown in figure 1, the cast-in-situ bored pile 102 gos deep into stratum, it can be, but not limited to elder generation
Stake holes is formed in the soil of stratum by machine drilling, steel reinforcement cage is then placed in hole, final concrete perfusion forms.In addition,
The cast-in-situ bored pile 102 is set in a row along route direction interval.
Optimization, opened at the top of the concrete protective wall 2 and in the road surface layer of subgrade bed 5 with the wall body of floor
Provided with osculum 201.As shown in figure 1, by the osculum 201, it can discharge above water impervious layer 4 and be stored in road
Rainwater in surface layer of subgrade bed, the water penetration of road surface layer of subgrade bed is further avoided into foam concrete, extend the building longevity of embankment
Life.
To sum up, the light-duty embankment suitable for deep soft soil foundation that the present embodiment is provided, has the following technical effect that：
(1) in order to suitable for deep soft soil foundation, mitigate embankment deadweight, be designed with a filler groove in the middle part of embankment, and by
Bubble concrete layer, water impervious layer and road surface layer of subgrade bed are sequentially filled in groove from bottom to up to enrich embankment, because foam mixes
The density of solidifying soil layer is smaller and its thickness can increase and heightening design with depth of fill, it is possible thereby to make embankment gravity load significantly
Degree mitigates, and reduces the load-bearing demand to soft soil foundation, shortens the designing pile length to embankment bottom, so as to avoid causing pile body to lose
Steady the problem of destroying, the resistance to overturning of embankment bottom pile slab structure is ensured, and efficiently control Embankment Subsidence；(2) due to
Embankment bottom employs pile slab structure, is compared to traditional ground processing structure (such as cement mixing method, lime pile, cement
Flyash gravel pile, high-pressure rotary jet grouting pile and pile for prestressed pipe etc.), foundation treatment depth can be made significantly to deepen, and to surrounding enviroment
Influence very small (compared to pile for prestressed pipe), solve under deep soft soil foundation that high Embankment Subsidence is excessive and Lack of support well
The problem of；(3) by designing water impervious layer and osculum, the water penetration of road surface layer of subgrade bed can be avoided into foam concrete,
Ensure that foam concrete is not corroded, extend the building life of embankment；(4) the light-duty embankment also have easily construction, build into
The advantages that this low and remarkable in economical benefits, it is easy to practical application and popularization.
Embodiment two
Fig. 2 shows the vertical section knot of the second provided by the utility model light-duty embankment for being applied to deep soft soil foundation
Structure schematic diagram, Fig. 3 show the schematic top plan view of pile slab structure provided by the utility model.The present embodiment enters as embodiment one
The technical scheme of one-step optimization, its light-duty embankment suitable for deep soft soil foundation provided provide light-duty with embodiment one
Embankment is compared, and difference is：The pile slab structure 1 also includes joist 103；Being provided with the top surface of the joist 103 can be with
The groove that the bearing sheet 101 coordinates, the cast-in-situ bored pile 102 is also fixedly connected with the bottom surface of the joist 103；It is described
Joist 103 is located at the lower section of the bearing sheet 101 or the lower section of adjacent two bearing sheets stitching portion, and holds in the groove
Bearing sheet 101.As shown in Figures 2 and 3, by the groove structure above the joist 103, can prevent from being embedded
Bearing sheet 101 occur situation about walking because of geological activity, while can facilitate and be assembled into prefabricated bearing sheet 101 surely
Solid linear embankment base.
The light-duty embankment suitable for deep soft soil foundation that the present embodiment is provided, on the technique effect basis of embodiment one
On, also have the following technical effect that：(1) by the groove structure above joist, the bearing sheet being embedded can be prevented
Occur situation about walking because of geological activity, while can facilitate and prefabricated bearing sheet 101 is assembled into firm linear embankment
Base.
As described above, it can preferably realize the utility model.For a person skilled in the art, it is new according to this practicality
The teaching of type, design various forms of light-duty embankments suitable for deep soft soil foundation and do not need performing creative labour.
These embodiments are changed in the case of not departing from principle of the present utility model and spirit, changes, replace, integrating and modification
Still fall within the scope of protection of the utility model.
Claims (10)
1. a kind of light-duty embankment suitable for deep soft soil foundation, including for being embedded in the pile slab structure (1) of underground, its
It is characterised by, the light-duty roadbed also includes being separately fixed at the concrete protective wall (2) at left and right sides of the pile slab structure (1)；
The pile slab structure (1) and two concrete protective walls (2) of left and right surround groove together, and in the trench from bottom to up
It has been sequentially filled bubble concrete layer (3), water impervious layer (4) and road surface layer of subgrade bed (5).
2. a kind of light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that also including some
Root dowel (7)；
The both ends of the dowel (7) are embedded in the concrete protective wall (2) and the bubble concrete layer (3) respectively.
A kind of 3. light-duty embankment suitable for deep soft soil foundation as claimed in claim 2, it is characterised in that the dowel
(7) it is longitudinally disposed " Π " steel bar.
A kind of 4. light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that the peg board knot
Structure (1) includes bearing sheet (101) and cast-in-situ bored pile (102)；
The concrete protective wall (2), the bearing sheet are respectively fixedly connected with left and right sides of the top surface of the bearing sheet (101)
(101) bottom surface is fixedly connected with the more cast-in-situ bored piles (102) in discrete arrangement.
A kind of 5. light-duty embankment suitable for deep soft soil foundation as claimed in claim 4, it is characterised in that the peg board knot
Structure (1) also includes joist (103)；
The groove that can coordinate with the bearing sheet (101) is provided with the top surface of the joist (103), in the joist (103)
Bottom surface is also fixedly connected with the cast-in-situ bored pile (102)；
The joist (103) is located at the lower section of the bearing sheet (101) or the lower section of adjacent two bearing sheets stitching portion, and holds embedding
Bearing sheet (101) in the groove.
A kind of 6. light-duty embankment suitable for deep soft soil foundation as described in claim 4 or 5, it is characterised in that the brill
Hole pouring pile (102) is set in a row along route direction interval.
7. a kind of light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that in the coagulation
The top of native protective bulkhead (2) and in the road surface layer of subgrade bed (5) with offering osculum (201) in the wall body of floor.
A kind of 8. light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that the peg board knot
Structure (1) and/or the concrete protective wall (2) are poured by armored concrete and formed.
A kind of 9. light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that the water-impervious
Layer (4) uses HDPE anti-seepage geomembranes.
A kind of 10. light-duty embankment suitable for deep soft soil foundation as claimed in claim 1, it is characterised in that the roadbed
Bed top layer (5) is A groups packing layer or graded broken stone layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720271162.8U CN206706479U (en) | 2017-03-20 | 2017-03-20 | A kind of light-duty embankment suitable for deep soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720271162.8U CN206706479U (en) | 2017-03-20 | 2017-03-20 | A kind of light-duty embankment suitable for deep soft soil foundation |
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| Publication Number | Publication Date |
|---|---|
| CN206706479U true CN206706479U (en) | 2017-12-05 |
Family
ID=60470083
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720271162.8U Expired - Fee Related CN206706479U (en) | 2017-03-20 | 2017-03-20 | A kind of light-duty embankment suitable for deep soft soil foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914161A (en) * | 2019-04-11 | 2019-06-21 | 中铁第六勘察设计院集团有限公司 | A kind of construction method of soft clay area high-speed railway filled-up ground |
| CN111395059A (en) * | 2020-03-23 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Light roadbed structure crossing karez, design and construction method |
| CN113215864A (en) * | 2021-05-08 | 2021-08-06 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN114635323A (en) * | 2022-02-16 | 2022-06-17 | 中铁一局集团厦门建设工程有限公司 | Lightweight foam concrete composite embankment structure based on FRP (fiber reinforced Plastic) ribs and construction method |
-
2017
- 2017-03-20 CN CN201720271162.8U patent/CN206706479U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914161A (en) * | 2019-04-11 | 2019-06-21 | 中铁第六勘察设计院集团有限公司 | A kind of construction method of soft clay area high-speed railway filled-up ground |
| CN111395059A (en) * | 2020-03-23 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Light roadbed structure crossing karez, design and construction method |
| CN113215864A (en) * | 2021-05-08 | 2021-08-06 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN113215864B (en) * | 2021-05-08 | 2022-05-03 | 中铁二院工程集团有限责任公司 | Earth-rock interbed embankment structure and design method thereof |
| CN114635323A (en) * | 2022-02-16 | 2022-06-17 | 中铁一局集团厦门建设工程有限公司 | Lightweight foam concrete composite embankment structure based on FRP (fiber reinforced Plastic) ribs and construction method |
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Granted publication date: 20171205 |