CN204059333U - After a kind of first draining, plugging plate holds formula embankment - Google Patents
After a kind of first draining, plugging plate holds formula embankment Download PDFInfo
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- CN204059333U CN204059333U CN201420499260.3U CN201420499260U CN204059333U CN 204059333 U CN204059333 U CN 204059333U CN 201420499260 U CN201420499260 U CN 201420499260U CN 204059333 U CN204059333 U CN 204059333U
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- embankment
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- drainage blanket
- plugging plate
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Abstract
After the utility model relates to a kind of first draining, plugging plate holds formula embankment, comprises plastic draining board, drainage blanket, anti-slurries seepage separation layer, shallow-layer sodified water earth plate, embankment fill material, road surface from bottom to top in echelon successively; Described plastic draining board top is located in drainage blanket; Described shallow-layer sodified water earth plate both sides are provided with interim gutter, and be equipped with anti-slurries seepage separation layer in it and filling concrete soil occluding body, described cement-soil occluding body elevation of bottom is lower than the drainage blanket elevation of bottom at the end of the precompressed phase.The utility model has the advantages such as cost is low, speed of application fast, accelerate soil body discharging consolidation, settlement after construction is little.
Description
Technical field
After the utility model relates to a kind of first draining, plugging plate holds formula embankment, belongs to foundation engineering field, is applicable to the foundation treatment engineering of the newly-built or Reconstruction Project of thickness of soft soil is large, foundation settlement control overflow is high highway construction.
Background technology
Weak soil is widely distributed in China, near the middle and lower reaches and lake in coastal and river, all have the deep area of weak soil covering layer.It is large that weak soil has water content, and shear strength is low, the characteristic of supporting capacity difference.If do not process or deal with improperly, will foundation instability be caused, not only can cause the engineering problems such as road structure destruction, bumping at bridge-head, also can affect the comfortableness of driving, cause and significantly slowed down by vehicle, even cause driving accident.Therefore, subgrade settlement problem, particularly soft soil roadbed settlement control problem have become the key factors such as subgrade construction quality such as affecting high-grade highway, cost, operation maintenance cost, operation benefits, and this has caused the extensive concern of engineering circles and academia.
Nowadays, when consolidation process is carried out to soft foundation, usually adopt prepressing water discharge consolidation method, and the pre-pressure drainage consolidation method adopted mainly comprises preloading and vacuum method.During practice of construction, preloading and vacuum method all need to lay vertical drainage band and horizontal drainage bed course, and what preloading application was maximum is plastic draining board, and horizontal drainage bed course is medium coarse sand bed course or cobble bed course.
At present, plugging structure (the patent No.: 201410032467.4) after a kind of subgrade drainage precompressed is there is in foundation engineering field, this structure is primarily of discrete material stub, plastic draining board, horizontal drainage bed course, vertical Grouting Pipe and horizontal grouting pipe composition, discrete material stub is located at below horizontal drainage bed course, lays vertical Grouting Pipe and plastic draining board in it; Horizontal drainage setting cushion, below embankment fill material, lays horizontal grouting pipe in it; Horizontal grouting pipe and vertical Grouting Pipe are interconnected by tee junction.After subgrade drainage precompressed terminates, form vertical slip casting by vertical Grouting Pipe and horizontal grouting pipe respectively to mud jacking in discrete material stub and horizontal drainage bed course and close stub and starch solid bed course loaded plate.Vertical Grouting Pipe and horizontal grouting pipe not recoverable in this structure, construction costs is high; The method is long in time limit, needs sufficient precompressed and discharging consolidation time, and workmanship is wayward simultaneously.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, a kind of drainage performance that can give full play to plastic draining board and drainage blanket is provided, accelerate the rate of consolidation of the soil body, after improving the first draining of the embankment structure of embankment supporting capacity, plugging plate holds formula embankment simultaneously.
For realizing above-mentioned technical purpose, the utility model have employed following technical scheme:
After a kind of first draining, plugging plate holds formula embankment, comprises plastic draining board, drainage blanket, anti-slurries seepage separation layer, shallow-layer sodified water earth plate, embankment fill material, road surface from bottom to top in echelon successively; Described plastic draining board top is located in drainage blanket; Described shallow-layer sodified water earth plate both sides are provided with interim gutter, and be equipped with anti-slurries seepage separation layer in it and filling concrete soil occluding body, described cement-soil occluding body elevation of bottom is lower than the drainage blanket elevation of bottom at the end of the precompressed phase.
As preferably: described drainage blanket adopts sand cushion or hardcore bed.
As preferably: described plastic draining board is evenly provided with draining hole, and plastic draining board top is embedded in drainage blanket, and bottom is squeezed in hardpan.
As preferably: described anti-slurries seepage separation layer adopts three-dimensional composite drainage network.
As preferably: described anti-slurries seepage separation layer is layed in bottom cement-soil occluding body and both sides simultaneously.
As preferably: described shallow-layer sodified water earth plate, by whitewash in soil and stirring, then carries out leveling compacting formation.
As preferably: described embankment fill material both sides are provided with permanent gutter.
The utility model has following feature and beneficial effect:
1, the plastic draining board in the utility model is combined with drainage blanket, the underground water in the soil body can be made effectively rapidly to discharge in the precompressed phase, to the discharging consolidation accelerating the soil body, reduces Embankment Subsidence and has good effect.
2, the arranging of anti-slurries seepage separation layer on drainage blanket top can prevent the slurries in upper water earth from infiltrating in drainage blanket, play the effect of reinforcement simultaneously, ensure the intensity of shallow-layer sodified water earth plate, to raising embankment bearing capacity, there is good effect.
3, shallow-layer sodified water earth plate can increase the supporting capacity of embankment, reduces settling amount, has good effect to the stability improving embankment.
4, during construction, the underground water that drainage blanket can be made to discharge that arranges of interim gutter enters interim gutter, then concentrate and carry out pump drainage, ensure that the unimpeded of underground water passing away, the water of simultaneously discharging can carry out collecting as a kind of prefabricating load, accelerates the discharging consolidation of soft base.
5, at the end of the precompressed phase, adopt cement-soil by interim gutter shutoff, thus drainage channel interrupts, be conducive to reducing settlement after construction.
Accompanying drawing explanation
Fig. 1 is that after the first draining of the utility model, plugging plate holds formula embankment structure schematic diagram;
Fig. 2 to Fig. 6 is the construction process schematic diagram that after a kind of first draining of the utility model, plugging plate holds formula embankment;
Description of reference numerals: soft base 1, plastic draining board 2, drainage blanket 3, anti-slurries seepage separation layer 4, shallow-layer sodified water earth plate 5, interim gutter 6, cement-soil occluding body 7, embankment fill material 8, permanent gutter 9, road surface 10.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model will be described in conjunction with preferred embodiment, should know, not represent the utility model restriction in the described embodiment.On the contrary, the utility model will contain can be included in attached claims limit scope of the present utility model in alternative, modified and equivalent.
Fig. 1 is that after a kind of first draining of the utility model, plugging plate holds formula embankment structure schematic diagram; Fig. 2 to Fig. 6 is the construction process schematic diagram that after the first draining of the utility model, plugging plate holds formula embankment.
Hold formula embankment with reference to plugging plate after the first draining shown in Fig. 1, form primarily of plastic draining board 2, drainage blanket 3, anti-slurries seepage separation layer 4, shallow-layer sodified water earth plate 5, interim gutter 6, cement-soil occluding body 7, roadbed 8, permanent gutter 9, road surface 10.
Drainage blanket 3 thickness is 0.5m, adopts rubble; Plastic draining board width is 150mm, adopts board-plugging device evenly to insert in ground 500 ~ 1000mm in relative bearing stratum by designing requirement on smooth good place.
Anti-slurries seepage separation layer 4 adopts three-dimensional composite drainage network, is made by the plastic wire double-sided adhesive infiltration geotextiles of stereochemical structure.
After shallow-layer sodified water earth plate 5 making completes, in roadbed both sides shallow-layer sodified water earth plate 5, excavate interim gutter 6 respectively, interim gutter 6 elevation of bottom according to calculating, will ensure that elevation of bottom is lower than drainage blanket 3 elevation of bottom after sedimentation.
After the precompressed phase terminates, in interim gutter 6, lay cement-soil form cement-soil occluding body 7, cement-soil occluding body 7 elevation of top is higher than drainage blanket 3 elevation of top after sedimentation.
Cement adopts No. 42.5 Portland cements, cement consumption be dry ground heavy 5 ~ 8%.
Fig. 2 to Fig. 6 is the construction process schematic diagram that after the first draining of the utility model, plugging plate holds formula embankment, and with reference to shown in Fig. 2 to Fig. 6, after first draining, plugging plate holds formula embankments construction process and mainly comprises:
1) prepare before construction: according to designing requirement, organizing construction's machinery is marched into the arena, and is excavated to design elevation to soft base, and smooth location;
2) set plastic draining board 2 and drainage blanket 3: set plastic draining board 2 at design attitude, and lay drainage blanket 3 on plastic draining board 2 top, wherein plastic draining board 2 top is imbedded in drainage blanket 3;
3) anti-slurries seepage separation layer 4 is laid: lay one deck anti-slurries seepage separation layer 4 on drainage blanket 3 top;
4) soft base backfill: on anti-slurries seepage separation layer 4 top by the earthen backfill of excavation to design elevation, carry out preliminary levelling of the land with bulldozer, the element soil in employing place, low-lying place backfills;
5) shallow-layer sodified water earth plate 5 is laid: first loosen the soil with machinery, then adopt the disposable soil to solidifying of stirring-head progressively to stir from top to bottom and extend into treating depth, whitewash while stirring while stretch into, stir until propose whitewashing on slow after projected depth, according to the speed stirred, cement grout is evenly sprayed in the soil of stirring simultaneously; After having solidified 1 ~ 2 day, utilize light-duty road roller or proprietary curing apparatus by solidified earth preliminary consolidation, then carry out maintenance;
6) dig interim gutter 6: in roadbed both sides shallow-layer sodified water earth plate 5, dig two interim gutters 6, wherein the absolute altitude of interim gutter 6 base plate according to calculating, should ensure at the end of the precompressed phase still lower than the absolute altitude bottom drainage blanket 3;
7) embankment: according to designing requirement at shallow-layer sodified water earth plate top railway embankment using filler 8;
8) prepressing water discharge: carry out precompressed on embankment fill material 8, the underground water in soil layer is made to enter drainage blanket 3 by plastic draining board 2 and then be discharged by interim gutter 6, the mode of pouch precompressed is used to carry out precompressed, namely, collect the water of discharge in interim gutter 6 as a kind of prefabricating load, water can supplement not;
9) the interim gutter 6 of shutoff: after the roadbed precompressed phase terminates, anti-slurries seepage separation layer 4 then filling concrete soil is laid in interim gutter 6, and carry out leveling compacting, form cement-soil occluding body 7, cement-soil occluding body 7 elevation of top is higher than the absolute altitude at drainage blanket 3 top at the end of the precompressed phase, will consider the sedimentation value after constructing simultaneously;
10) permanent gutter 9 is dug: according to designing requirement, permanent gutter 9 is set in roadbed both sides;
11) road structure construction: after above-mentioned construction completes, carry out the construction of road surface, top 10 structure.
Claims (7)
1. after first draining, plugging plate holds a formula embankment, it is characterized in that: comprise plastic draining board (2), drainage blanket (3), anti-slurries seepage separation layer (4), shallow-layer sodified water earth plate (5), embankment fill material (8), road surface (10) from bottom to top in echelon successively; Described plastic draining board (2) top is located in drainage blanket (3); Described shallow-layer sodified water earth plate (5) both sides are provided with interim gutter (6), be equipped with anti-slurries seepage separation layer (4) in it and filling concrete soil occluding body (7), described cement-soil occluding body (7) elevation of bottom is lower than drainage blanket (3) elevation of bottom at the end of the precompressed phase.
2. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: described drainage blanket (3) adopts sand cushion or hardcore bed.
3. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: (2) are evenly provided with draining hole to described plastic draining board, plastic draining board (2) top is embedded in drainage blanket (3), and bottom is squeezed in hardpan.
4. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: described anti-slurries seepage separation layer (4) adopts three-dimensional composite drainage network.
5. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: described anti-slurries seepage separation layer (4) is layed in cement-soil occluding body (7) bottom and both sides simultaneously.
6. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: described shallow-layer sodified water earth plate (5), by whitewashing in soil and stirring, is then carried out leveling compacting and formed.
7. after first draining according to claim 1, plugging plate holds formula embankment, it is characterized in that: described embankment fill material (8) both sides are provided with permanent gutter (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420499260.3U CN204059333U (en) | 2014-09-01 | 2014-09-01 | After a kind of first draining, plugging plate holds formula embankment |
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| CN201420499260.3U CN204059333U (en) | 2014-09-01 | 2014-09-01 | After a kind of first draining, plugging plate holds formula embankment |
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| CN204059333U true CN204059333U (en) | 2014-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234034A (en) * | 2014-09-01 | 2014-12-24 | 安徽省交通建设有限责任公司 | First water discharge and then sealing and blocking plate carrying type road embankment and construction method |
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2014
- 2014-09-01 CN CN201420499260.3U patent/CN204059333U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234034A (en) * | 2014-09-01 | 2014-12-24 | 安徽省交通建设有限责任公司 | First water discharge and then sealing and blocking plate carrying type road embankment and construction method |
| CN104234034B (en) * | 2014-09-01 | 2016-01-06 | 安徽省交通建设有限责任公司 | After a kind of first draining, plugging plate holds the construction method of formula embankment |
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Address after: 230041 Suixi Road, Anhui, China, No. 310, No. Patentee after: Anhui traffic construction Limited by Share Ltd Address before: 230041 Suixi Road, Anhui, China, No. 310, No. Patentee before: ANHUI GOURGEN TRAFFIC CONSTRUCTION CO., LTD. |