CN108360321A - A kind of structure and method of control fine grained soil high-filled subgrade settlement after construction - Google Patents
A kind of structure and method of control fine grained soil high-filled subgrade settlement after construction Download PDFInfo
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- CN108360321A CN108360321A CN201810103306.8A CN201810103306A CN108360321A CN 108360321 A CN108360321 A CN 108360321A CN 201810103306 A CN201810103306 A CN 201810103306A CN 108360321 A CN108360321 A CN 108360321A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a kind of structures of control fine grained soil high-filled subgrade settlement after construction, including ground, fine grained soil embankment noumenon, vertical reinforcement, conditioned soil roadbed, side slope of embankment, gutter, skeleton grass planting protects, also disclose a kind of method of control fine grained soil high-filled subgrade settlement after construction, fine grained soil embankment noumenon is filled in ground higher slice, vertical reinforcement is laid with quincunx dot matrix distribution pattern at the top of fine grained soil embankment noumenon, conditioned soil roadbed is filled in fine grained soil embankment noumenon and the vertical body higher slice that increases, one of gutter is set at each platform of side slope of embankment, on side slope of embankment surface, setting skeleton grass planting protects.Structure is durable, method is reliable, the settlement Control and Defects Treatment of Highway High-filled Embankment that is economical and practical, can be used for the build of the fine grained soils such as silt, cohesive soil, high liquid limit soil, loess, is particularly suitable for that conventional Reinforcement Scheme can not be implemented（Strong rammer or impact-rolling）Fine grained soil high-filled subgrade paragraph settlement Control.
Description
Technical field
The invention belongs to highway subgrade construction technical fields, and in particular to a kind of control fine grained soil high-filled subgrade settlement after construction
Structure, further relate to it is a kind of control fine grained soil high-filled subgrade settlement after construction method, can be used for silt, cohesive soil, high liquid limit soil,
The settlement Control and Defects Treatment for the Highway High-filled Embankment that the fine grained soils such as loess are built, are particularly suitable for that strong rammer or punching can not be carried out
The lower part for rolling reinforcement is hit equipped with works（Such as culvert, channel）The narrow short fine grained soil height in part fill out section.
Background technology
High-filled subgrade refers to the embankment that roadbed filling height is more than 20m, due to filling excessively high, the improper, settlement reservation of compacting
Larger settlement after construction often occurs for the reasons such as the phase is shorter.Embankment Subsidence usually consists of two parts, and a part is under embankment
The settlement of foundation in portion, another part are the sedimentation of embankment filled soil itself.In recent years, highway engineering circle proposes many control ground
The method, such as preloading, heavy-tamping method, compound foundation method etc. of base sedimentation, application of these technologies in basement process is
Comparative maturity, treatment effect are apparent.And for the larger high-filled subgrade of embankment settlement amount, it usually needs to embankment itself into
Row reinforcement solutions can generally be considered as following two methods：One, impact-rolling；Two, strong rammer.Impact-rolling generally uses three
Side shape impact road roller is completed, and length longer section is suitable for（＞ 100m）, in order to which impact road roller is reversed end for end and is raised speed；By force
Rammer method can be used for length compared with shorted segment（≤100m）, but the high-filled subgrade that culvert or channel design object are equipped with for lower part is then answered
It uses with caution.The present invention is to be equipped with the works such as culvert or channel for lower part to carry out the narrow short of strong rammer or impact-rolling reinforcement
Fine grained soil high-filled subgrade section is proposed.
Invention content
The problems of for the above-mentioned prior art, an object of the present invention is to be the provision of a kind of control particulate
The structure of native high-filled subgrade settlement after construction, the structural behaviour is reliable, safety durable, economical and practical, applicability is wide, can be used for powder
The settlement Control and Defects Treatment for the Highway High-filled Embankment that the fine grained soils such as soil, cohesive soil, high liquid limit soil, loess are built, it is especially suitable
For conventional scheme reinforcement can not to be implemented（Strong rammer or impact-rolling）Fine grained soil high-filled subgrade paragraph settlement Control.
The second object of the present invention is to be the provision of a kind of method of control fine grained soil high-filled subgrade settlement after construction, master
It is that vertical reinforcement is arranged in the following embankment noumenon of roadbed to want advantage, compacted embankment filled soil, improves embankment bearing capacity, is reduced
High-filled subgrade settlement after construction.The method solves the lower part that can not carry out strong rammer or impact-rolling reinforcement equipped with works（As contained
Hole, channel）The narrow short fine grained soil height in part fill out the settlement Control problem in section, it is easy for construction and can effectively shorten the duration, reduce
Project cost has good technical economic benefit.
Used technical solution is the present invention to solve above-mentioned technical problem：
A kind of structure of control fine grained soil high-filled subgrade settlement after construction, including ground further include fine grained soil embankment noumenon, vertical increasing
Qiang Ti, conditioned soil roadbed, side slope of embankment, gutter, the protection of skeleton grass planting, plain stage of slope, skeleton and grass planting, fine grained soil embankment sheet
Body is arranged on ground, and vertical reinforcement is laid at the top of fine grained soil embankment noumenon, and fine grained soil embankment noumenon higher slice fills improvement
Dirt road bed, fine grained soil embankment noumenon both sides are side slope of embankment, and plain stage of slope is arranged on side slope of embankment, and gutter is arranged in side slope
At platform, the protection of skeleton grass planting is arranged on side slope of embankment surface；
The fine grained soil embankment noumenon is formed by fine grained soil placement in layers compaction in layers from bottom to top, and every layer of filling-up thickness is
20cm or 25cm or 30cm；
The vertical reinforcement includes the compaction pile of several quincunx dot matrix distributions, and compaction pile is from fine grained soil embankment noumenon top
Face is squeezed into from top to bottom at the top of fine grained soil embankment noumenon, the either flush of the top surface and fine grained soil embankment noumenon of compaction pile；
The compaction pile is the cylindrical pile body that lime-stabilized soil or Cement Soil make, a diameter of 0.4m of compaction pile or
0.5m, length are 6 m or 8m or 10m；The center spacing of adjacent compaction pile is 1.2m or 1.4m or 1.6m or 1.8m or 2.0m；
The conditioned soil roadbed is filled by 3 layers or 4 layers of lime-stabilized soil or Cement Soil point, every layer of lime-stabilized soil or water
The thickness of mud conditioned soil is 25cm or 30cm,
The lime-stabilized soil is made of quick lime and fine grained soil, and the mass ratio of quick lime and fine grained soil is 5:100 or 6：100
Or 7：100 or 8：100；
The Cement Soil is made of cement and fine grained soil, and the fit quality ratio of cement and fine grained soil is 3:100 or 4：100
Or 5：100 or 6：100, fine grained soil is the earth material that maximum particle diameter is less than 0.075 mm.
The slope gradient of the side slope of embankment is 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0, along vertical height separation 8m
Or 9m or 10m is corresponding is arranged plain stage of slope along side slope of embankment, plain stage of slope width is 2m or 3m or 4m；
The skeleton grass planting protection includes the skeleton being arranged on side slope of embankment, and is planted in intraskeletal grass planting, skeleton
For the arch or diamond shape of array arrangement, grass planting is one or more of black malt, Festuca Arundinacea, Bermuda grass.
A method of control fine grained soil high-filled subgrade settlement after construction includes the following steps：
Step 1, structural parameters determination and preparation of construction：Specially determine that filling height, the compaction pile of fine grained soil embankment noumenon are high
Degree, compacted pile material, compaction pile spacing, compaction pile diameter, the compactness of fine grained soil embankment noumenon, the ratio of slope of side slope of embankment, side
Slope position of platform and width, gutter size, skeleton size, the type of grass planting；
Step 2, placement in layers fine grained soil embankment noumenon：It by fine grained soil placement in layers from bottom to top and is layered specially on ground
Compacting forms fine grained soil embankment noumenon, and every layer of filling-up thickness is 20cm or 25cm or 30cm；According to the ratio of slope of side slope of embankment and side
Slope position of platform and width, the side slope of embankment and plain stage of slope of finishing fine grained soil embankment noumenon both sides；
Step 3 hole-specifically implements vertical enhancing reinforcement body：Specially after the placement in layers of fine grained soil embankment noumenon, in fine grained soil
The rammer that compaction pile stake holes is carried out at the top of embankment noumenon scrapes out hole, and compaction pile stake holes is spaced rammer and scrapes out hole, compaction pile stake holes in two batches
Rammer scrapes out back-filling in layers lime-stabilized soil or Cement Soil and compaction in layers behind hole and forms compaction pile, the top surface of compaction pile with it is thin
The either flush of the native embankment noumenon of grain, compaction pile a diameter of 0.4m or 0.5m；Length is 6 m or 8m or 10m, adjacent compaction pile
Center spacing be 1.2m or 1.4m or 1.6m or 1.8m or 2.0m；Until all compaction piles of having constructed, form vertical reinforcement；
Step 4, placement in layers conditioned soil roadbed：Lime-stabilized soil or cement improvement are used specially on fine grained soil embankment noumenon
3 layers or 4 layers of soil point fills and compaction in layers, forms conditioned soil roadbed；
Step 5 builds skeleton by laying bricks or stones and lays grass planting, specially uses mortar flag stone or cement concrete according to sequence from the bottom up
Build skeleton by laying bricks or stones, skeleton is the arch or diamond shape of array arrangement, and skeleton sends out the grass-seed for taking root in soil and grass planting into skeleton after being formed；
Step 6 builds plain stage of slope gutter：It is specially corresponding along side slope of embankment in vertical height separation 8m or 9m or 10m
Upper setting plain stage of slope lays gutter at each plain stage of slope.
The lime-stabilized soil mixes and stirs fine grained soil by quick lime and forms, and the mass ratio of quick lime and fine grained soil is 5:100
Or 6：100 or 7：100 or 8：100；
The Cement Soil is made of cement and fine grained soil, and the fit quality ratio of cement and fine grained soil is 3:100 or 4：100
Or 5：100 or 6：100；
The fine grained soil is the earth material that particle maximum particle diameter is less than 0.075 mm；
The slope gradient of the side slope of embankment is 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0；
The plain stage of slope width is 2m or 3m or 4m.
The principle that structure of the invention carries out the high post-construction settlement control of fine grained soil is as follows：
The fine grained soil high-filled subgrade settlement law grasped by a large amount of engineering practices and scientific experiment is high by construction compacting and top
Embankment filled soil load action is filled out, the settlement after construction of embankment lower part has substantially eliminated, and the settlement after construction of fine grained soil high-filled subgrade is main
It is happened within the scope of 6 ~ 10m of roadbed top surface or less.Based on this rule, novelty of the present invention is proposed with perpendicular at the top of embankment noumenon
To the composite force reinforced structure that reinforcement and conditioned soil roadbed are core.
Vertical reinforcement provided by the invention, by filling out lime-stabilized soil or Cement Soil in embankment top down rammer,
On the one hand lateral extrusion compact embankment is filled out by ramming, and compacted embankment is expanded by lime or cement water suction chemical reaction, significantly
The compactness of embankment is improved, settlement after construction is reduced；On the other hand a series of lime-stabilized soils or Cement Soil compaction pile are formed
The higher vertical pile group of intensity, the horizontal strengthening course formed with conditioned soil roadbed are combined, one composite force of formation
Reinforced structure body can undertake most overlying burden effect, disperse the active force of embankment structure, reduce settlement after construction again.
In addition, the present invention provides the accessory structures such as skeleton grass planting and platform draining, strengthens side slope of embankment protection and draining, reduce earth's surface
Settlement influence of the precipitation to high-filled subgrade.
Compared with prior art, the present invention has the following advantages：
（1）Compared with existing highway subgrade construction strong rammer and impact-rolling method, this method scope of application is more extensive, both fits
For the settlement Control and structural strengthening in the achievable high-filled subgrade section of growing up of strong rammer and impact-rolling, it is more suitable for lower part and sets
There are culvert or channel design object etc. that should not carry out strong rammer or the narrow short fine grained soil high-filled subgrade section of impact-rolling reinforcement.
（2）Compaction pile method introduction in geotechnical engineering basement process is applied to highway subgrade construction field, root by the present invention
According to the main occurrence scope of the settlement after construction of fine grained soil high-filled subgrade and road structure feature, traditional compacting method is improved, innovation is formed
Using vertical reinforcement and conditioned soil roadbed at the top of embankment noumenon, as the composite force reinforced structure of core, the structural behaviour is reliable,
Safety durable can effectively shorten sedimentation period and duration.
（3）The present invention fills existing compaction pile, conditioned soil, compacting, side according to fine grained soil high-filled subgrade settlement law
Slope is drained has carried out integrated innovation with routine techniques such as protection, and compaction pile and improvement are used to the embankment top that sedimentation mainly occurs
Native technology has carried out reinforcement solutions, and draining protection has been carried out to the side slope of embankment that ground precipitation is affected for a long time, and to embankment
Lower part makes full use of structure self-compaction rule, eliminates the unnecessary engineering reinforcement measure in embankment lower part, is ensureing structural behaviour
Under the premise of reliable durable, project cost is rationally reduced, it is economic and environment-friendly.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of the structure of control fine grained soil high-filled subgrade settlement after construction；
Fig. 2 is a kind of elevation of the structure of control fine grained soil high-filled subgrade settlement after construction；
Fig. 3 is vertical reinforcement floor plan；
Fig. 4 is the implementing procedure figure of the present invention；
In figure, 1- grounds, 2- fine grained soils embankment noumenon, the vertical reinforcements of 3-, 4- conditioned soils roadbed, 5- side slope of embankment, 6- drainings
Ditch, the protection of 7- skeleton grass plantings, 8- plain stage of slopes, 9- skeletons, 10- grass plantings, 11- works, 12- first compaction pile stake holes pore-forming
Position, 13- second batch compaction pile stake holes are at hole site.
Specific implementation mode
Technical solution of the present invention is described in detail with example below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figs. 1-3, a kind of structure of control fine grained soil high-filled subgrade settlement after construction, including ground 1, further include particulate dirt road
Dike ontology 2, vertical reinforcement 3, conditioned soil roadbed 4, side slope of embankment 5, gutter 6, skeleton grass planting protection 7, plain stage of slope 8, bone
Frame 9 and grass planting 10, fine grained soil embankment noumenon 2 are arranged on ground 1, and 2 top of fine grained soil embankment noumenon is distributed with quincunx dot matrix
Pattern lays vertical reinforcement 3, and 2 higher slice of fine grained soil embankment noumenon fills conditioned soil roadbed 4,2 both sides of fine grained soil embankment noumenon
For side slope of embankment 5, plain stage of slope 8 is arranged on side slope of embankment 5, and gutter 6 is arranged at plain stage of slope 8, skeleton grass planting protection 7
It is arranged on 5 surface of side slope of embankment.
Ground 1, for the subsoil or artificial treatment ground for Filling High Embankment structure, foundation bearing capacity should meet Gao Lu
The requirement of dike overall stability, ground surface layer compactness should be not less than 90%.
Fine grained soil embankment noumenon 2, for the embankment structure with fine grained soil placement in layers from bottom to top on ground 1, particulate
2 height of native embankment noumenon is 20m or 30m or 40m or 50m or other design sizes, and fine grained soil embankment noumenon 2 answers placement in layers point
Lamination is real, and every layer of filling-up thickness is 20cm or 25cm or 30cm, and every layer of compactness should meet《Highway Roadbed Construction Technology is advised
Model》Defined standard, the fine grained soil are the earth material that particle maximum particle diameter is less than 0.075 mm, including cohesive soil, silt, Huang
Soil, high liquid limit soil etc..
Vertical reinforcement 3 includes the compaction pile of several quincunx dot matrix distributions, and compaction pile is in quincunx dot matrix pattern point
It is distributed in 2 top of fine grained soil embankment noumenon, compaction pile squeezes into fine grained soil embankment noumenon from top to bottom from 2 top surface of fine grained soil embankment noumenon
2 top, 6 m or 8m or 10m, the either flush of the top surface and embankment noumenon 2 of compaction pile；The compaction pile is to be changed using lime
The cylindrical pile body that good soil or cement improvement soil material make, compaction pile a diameter of 0.4m or 0.5m, length be 6 m or 8m or
The center spacing of 10m, adjacent compaction pile are 1.2m or 1.4m or 1.6m or 1.8m or 2.0m.
Conditioned soil roadbed 4 is filled, every layer of lime-stabilized soil or water by 3 layers or 4 layers of lime-stabilized soil or Cement Soil point
The thickness of mud conditioned soil is 25cm or 30cm, and conditioned soil roadbed 4 is laid with 2 top of fine grained soil embankment noumenon and forms horizontal reinforcement,
Composite force structure is formed with the vertical reinforcement 3 in lower part, shares top road surface and vehicular load jointly.
The lime-stabilized soil mixes and stirs fine grained soil using quick lime and forms, and the fit quality ratio of quick lime and fine grained soil is
5:100 or 6：100 or 7：100 or 8：100；The Cement Soil mixes and stirs fine grained soil by cement and forms, cement and fine grained soil
Fit quality ratio be 3:100 or 4：100 or 5：100 or 6：100.Fine grained soil is the earth material that maximum particle diameter is less than 0.075 mm,
Including cohesive soil, silt, loess, high liquid limit soil etc..
Side slope of embankment 5, is the side slope body of 2 both sides of fine grained soil embankment noumenon, and side slope of embankment 5 should be arranged according to stability requirement
Slope gradient is 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0, it is corresponding along embankment side along vertical height separation 8m or 9m or 10m
One of plain stage of slope 8,8 width 2m or 3m or 4m of plain stage of slope are set on slope 5.
Gutter 6, for the rectangle opening gutter built by laying bricks or stones using mortar flag stone, gutter is disposed longitudinally on side slope along roadbed
On platform 8, the earth's surface rainfall charge for remittance for collecting and draining side slope of embankment 5.
Skeleton grass planting protection 7, including skeleton 9 and grass planting 10, are arranged on 5 surface of side slope of embankment, for protecting and afforesting road
Dike side slope；The skeleton 9 is domed in the slope surface of side slope of embankment 5 or diamond shape, and spacing is that 2m or 3m or 4m is distributed, using slurry
It builds slabstone or cement concrete is built by laying bricks or stones；The grass planting 10 selects the grass seeds that local vitality is strong, survival rate is high, be black malt,
One or more of Festuca Arundinacea, Bermuda grass are sent out with native mix is taken root in skeleton 9.
Embodiment 2：
As shown in Figs 1-4, a method of control fine grained soil high-filled subgrade settlement after construction specifically comprises the following steps：
Step 1, structural parameters determination and preparation of construction：Base area base shape, climatic environment, roadbed design absolute altitude, filler physics
The features such as mechanical property, determine concrete structure parameter, including the filling height of fine grained soil embankment noumenon 2, compaction pile height, compacted
Pile material, compaction pile spacing, compaction pile diameter, the compactness of fine grained soil embankment noumenon 2, the ratio of slope of side slope of embankment 5, plain stage of slope
8 positions and width, 6 size of gutter, 9 size of skeleton, the type etc. of grass planting 10, prepare mating construction material and are set with equipment
It is standby；
Step 2, placement in layers fine grained soil high-filled subgrade.By fine grained soil placement in layers from bottom to top and compaction in layers on ground 1
Fine grained soil embankment noumenon 2 is formed, every layer of filling-up thickness is 20cm or 25cm or 30cm, the synchronous side slope of embankment according to structure design
5 ratio of slope and 8 position of plain stage of slope and width, the side slope of embankment 5 and plain stage of slope 8 of 2 both sides of finishing fine grained soil embankment noumenon.
Step 3 hole-specifically implements 3 reinforcement of vertical reinforcement.After fine grained soil embankment noumenon 2 fills, in fine grained soil embankment
2 top of ontology compaction pile is laid with quincunx dot matrix distribution pattern.Using pore-forming and tamping apparatus, according to being spaced in two batches to squeezing
Close stake stake holes carries out pore-forming, every a hole at a hole, by the sequence of pore-forming rams dig the stake holes for forming compaction pile, i.e. general one by one inward outside
The compaction pile stake holes at the interval in the compaction pile stake holes of all quincunx dot matrix distributions as first progress compaction pile stake holes at
Hole, by remaining compaction pile stake holes（Also it is the compaction pile stake holes at interval）Stake holes pore-forming is carried out as second batch, as shown in figure 4,
Sequence when every batch of compaction pile stake holes pore-forming from 2 periphery to center of fine grained soil embankment noumenon carries out pore-forming, compaction pile stake holes pore-forming
Backfill lime-stabilized soil or Cement Soil filler in time afterwards（Material used is same material, i.e., first a batch is lime improvement
Soil, later batch also use lime-stabilized soil, and first a batch is Cement Soil, and later batch is also Cement Soil）, by back-filling in layers point
Layer compacting forms compaction pile, the either flush of the top surface and fine grained soil embankment noumenon 2 of compaction pile, a diameter of 0.4m of compaction pile or
0.5m；Length is 6 m or 8m or 10m, and the center spacing of adjacent compaction pile is 1.2m or 1.4m or 1.6m or 1.8m or 2.0m；
Repeatedly until construct all compaction piles, the vertical reinforcement of formation fine grained soil high-filled subgrade 3.
Step 4, placement in layers conditioned soil roadbed 4.After vertical reinforcement 3 is molded, stone is used on fine grained soil embankment noumenon 2
Grey conditioned soil or Cement Soil points 3 layers or 4 layers fills and compaction in layers, forms conditioned soil roadbed 4, conditioned soil roadbed 4 and squeezes
Close stake uses same material.
Step 5 builds 5 skeleton grass planting of side slope of embankment protection 7 by laying bricks or stones.On side slope of embankment surface skeleton is laid according to arch or diamond shape
9, skeleton 9 is built by laying bricks or stones according to sequence from the bottom up using mortar flag stone or cement concrete, to the sash of skeleton after the formation of skeleton 9
In send out take root in soil and grass planting 10 grass-seed, formed skeleton grass planting protection 7.Grass planting 10 selects that local vitality is strong, survival rate is high
Grass seeds, be black malt, Festuca Arundinacea, one or more of Bermuda grass.
Step 6 builds plain stage of slope 8 and gutter 6.It is corresponding along embankment side in vertical height separation 8m or 9m or 10m
Plain stage of slope 8 is set on slope 5, excavates platform gutter one by one according to sequence from bottom to top, platform edges is built by laying bricks or stones using mortar flag stone
Ditch forms gutter 6.
The lime-stabilized soil mixes and stirs fine grained soil by quick lime and forms, and the mass ratio of quick lime and fine grained soil is 5:100
Or 6：100 or 7：100 or 8：100；
The Cement Soil is made of cement and fine grained soil, and the fit quality ratio of cement and fine grained soil is 3:100 or 4：100
Or 5：100 or 6：100；
The fine grained soil is the earth material that particle maximum particle diameter is less than 0.075 mm；
The slope gradient of the side slope of embankment 5 is 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0；
8 width of plain stage of slope is 2m or 3m or 4m.
Specific embodiment described herein is only to be given an example to the present invention.The technical field of the invention
Technical staff can make various modifications or additions to the described embodiments or substitute, but not deviate the present invention
Marrow or surmount the range defined outside the appended claims.
Claims (2)
1. a kind of structure of control fine grained soil high-filled subgrade settlement after construction, including ground（1）, which is characterized in that further include particulate
Native embankment noumenon（2）, vertical reinforcement（3）, conditioned soil roadbed（4）, side slope of embankment（5）, gutter（6）, skeleton grass planting protection
（7）, plain stage of slope（8）, skeleton（9）And grass planting（10）, fine grained soil embankment noumenon（2）It is arranged in ground（1）On, fine grained soil embankment
Ontology（2）Lay vertical reinforcement in top（3）, fine grained soil embankment noumenon（2）Higher slice has filled conditioned soil roadbed（4）, particulate
Native embankment noumenon（2）Both sides are side slope of embankment（5）, plain stage of slope（8）It is arranged in side slope of embankment（5）On, gutter（6）Setting exists
Plain stage of slope（8）Place, the protection of skeleton grass planting（7）It is arranged in side slope of embankment（5）Surface；
The fine grained soil embankment noumenon（2）It is formed by fine grained soil placement in layers compaction in layers from bottom to top, every layer of filling-up thickness
For 20cm or 25cm or 30cm；
The vertical reinforcement（3）Include the compaction pile of several quincunx dot matrix distributions, compaction pile is from fine grained soil embankment sheet
Body（2）Fine grained soil embankment noumenon is squeezed into top surface from top to bottom（2）Top, top surface and the fine grained soil embankment noumenon of compaction pile（2）'s
Either flush；
The compaction pile is the cylindrical pile body that lime-stabilized soil or Cement Soil make, a diameter of 0.4m of compaction pile or
0.5m, length are 6 m or 8m or 10m；The center spacing of adjacent compaction pile is 1.2m or 1.4m or 1.6m or 1.8m or 2.0m；
The conditioned soil roadbed（4）It is filled by 3 layers or 4 layers of lime-stabilized soil or Cement Soil point, every layer of lime-stabilized soil
Or the thickness of Cement Soil is 25cm or 30cm,
The lime-stabilized soil is made of quick lime and fine grained soil, and the mass ratio of quick lime and fine grained soil is 5:100 or 6：100
Or 7：100 or 8：100；
The Cement Soil is made of cement and fine grained soil, and the fit quality ratio of cement and fine grained soil is 3:100 or 4：100
Or 5：100 or 6：100, fine grained soil is the earth material that maximum particle diameter is less than 0.075 mm；
The side slope of embankment（5）Slope gradient be 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0, along vertical height separation 8m
Or 9m or 10m is corresponding along side slope of embankment（5）Upper setting plain stage of slope（8）, plain stage of slope（8）Width is 2m or 3m or 4m；
The skeleton grass planting protection（7）Including being arranged in side slope of embankment（5）On skeleton（9）, and it is planted in skeleton（9）It is interior
Grass planting（10）, skeleton（9）For the arch or diamond shape of array arrangement, grass planting（10）For one in black malt, Festuca Arundinacea, Bermuda grass
Kind is a variety of.
2. a kind of method of control fine grained soil high-filled subgrade settlement after construction, includes the following steps：
Step 1, structural parameters determination and preparation of construction：Specially determine fine grained soil embankment noumenon（2）Filling height, compaction pile
Highly, compacted pile material, compaction pile spacing, compaction pile diameter, fine grained soil embankment noumenon（2）Compactness, side slope of embankment（5）'s
Ratio of slope, plain stage of slope（8）Position and width, gutter（6）Size, skeleton（9）Size, grass planting（10）Type；
Step 2, placement in layers fine grained soil embankment noumenon（2）：Specially in ground（1）On by fine grained soil placement in layers from bottom to top
And compaction in layers forms fine grained soil embankment noumenon（2）, every layer of filling-up thickness is 20cm or 25cm or 30cm；According to side slope of embankment
（5）Ratio of slope and plain stage of slope（8）Position and width modify fine grained soil embankment noumenon（2）The side slope of embankment of both sides（5）And side slope
Platform（8）；
Step 3 hole-specifically implements vertical reinforcement（3）Reinforcement：Specially fine grained soil embankment noumenon（2）After placement in layers,
Fine grained soil embankment noumenon（2）The rammer that top carries out compaction pile stake holes scrapes out hole, and compaction pile stake holes is spaced rammer and scrapes out hole in two batches, squeezes
Close stake stake holes rammer scrapes out back-filling in layers lime-stabilized soil or Cement Soil and compaction in layers formation compaction pile behind hole, compaction pile
Top surface and fine grained soil embankment noumenon（2）Either flush, compaction pile a diameter of 0.4m or 0.5m；Length is 6 m or 8m or 10m,
The center spacing of adjacent compaction pile is 1.2m or 1.4m or 1.6m or 1.8m or 2.0m；Until all compaction piles of having constructed, shape
At vertical reinforcement（3）；
Step 4, placement in layers conditioned soil roadbed（4）：Specially in fine grained soil embankment noumenon（2）It is upper to use lime-stabilized soil or water
3 layers or 4 layers of mud conditioned soil point is filled and compaction in layers, forms conditioned soil roadbed（4）；
Step 5 builds skeleton by laying bricks or stones（9）With laying grass planting（10）, specially use mortar flag stone or cement concrete according to from lower past
On sequence build skeleton by laying bricks or stones（9）, skeleton（9）For the arch or diamond shape of array arrangement, skeleton（9）To skeleton after formation（9）In broadcast
It dissipates and takes root in soil and grass planting（10）Grass-seed；
Step 6 builds plain stage of slope（8）Gutter（6）：It is specially corresponding along road in vertical height separation 8m or 9m or 10m
Dike side slope（5）Upper setting plain stage of slope（8）, in each plain stage of slope（8）Lay gutter in place（6）；
The lime-stabilized soil mixes and stirs fine grained soil by quick lime and forms, and the mass ratio of quick lime and fine grained soil is 5:100 or 6：
100 or 7：100 or 8：100；
The Cement Soil is made of cement and fine grained soil, and the fit quality ratio of cement and fine grained soil is 3:100 or 4：100
Or 5：100 or 6：100；
The fine grained soil is the earth material that particle maximum particle diameter is less than 0.075 mm；
The side slope of embankment（5）Slope gradient be 1:1.5 or 1:2.0 or 1:2.5 or 1:3.0；
The plain stage of slope（8）Width is 2m or 3m or 4m.
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| CN115110361A (en) * | 2022-07-06 | 2022-09-27 | 沧州港务集团有限公司绿化分公司 | Construction treatment method and matched treatment system for special road subgrade |
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