CN206815315U - The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground - Google Patents
The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground Download PDFInfo
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- CN206815315U CN206815315U CN201720576015.1U CN201720576015U CN206815315U CN 206815315 U CN206815315 U CN 206815315U CN 201720576015 U CN201720576015 U CN 201720576015U CN 206815315 U CN206815315 U CN 206815315U
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Abstract
It the utility model is related to a kind of fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground, for in the vacuum pre-press reinforcing processing system that is handled super soft ground, main body is that can transmit the elastic sack body of fluid pressure, fluid injection seal 5 is provided with the top of elastic sack body, top both sides are communicated with water injection pipe 11；When carrying out mortar depositing construction, Grouting Pipe 10 is inserted with elastic sack body.
Description
Technical field
The utility model provides one kind in weak soil, super soft ground processing method, the vacuum preloading belonged in Geotechnical Engineering
With composite foundation joint processing technology.
Background technology
In the last few years, because land resources is in short supply, reclamation engineering receives increasing attention, vacuum method
As a kind of common method for processing foundation, it is widely applied in reclamation engineering.Conventional vacuum method is soft
Soil primary surface laying sand bedding course, sets plastic draining board or sand drain, then make itself and atmospheric isolation, diaphragm seal end with close membrane
Pile things on processing is carried out with soil, by being embedded in the drainage pipeline of sand bedding course, is evacuated using vavuum pump or other vacuum means,
Under negative pressure of vacuum effect, negative pressure is gradually formed in earth's surface sand bedding course and vertical drainage passage, while inside soil body leads to draining
Pressure differential is formed between road, bed course, under this differential pressure action, the pore water around drain bar in weak soil is constantly arranged by drainage channel
Go out, due to the dissipation of soil body Pore Pressure, effective stress increases therewith, and the soil body gradually consolidates, and intensity also can be carried correspondingly
It is high.
As reclamation engineering is to " waters, particulate, efficiently " development, on the basis of traditional vacuum pre-press reinforcing processing
There is various types of corrective measures and method, such as without the in line technique of soft soil foundation treatment of sand, air pressure splitting technique of soft soil foundation treatment, note
Gas supercharging technique of soft soil foundation treatment, electric osmose combined vacuum prestressing technology, preloading combined vacuum prestressing technology etc., these improved technologies exist
Certain effect is achieved in engineer applied.
Although improvement after vacuum preloading method can improve soil stabilization to a certain extent, still suffer from compared with
The shortcomings that more：
1) for super soft ground, when carrying out consolidation process using vacuum preloading method, generally displacement early stage
Larger, drainage effect is obvious, to later stage drain bar near particulate mud plug drain bar, vacuum also declines therewith,
Cause later stage drainage rates to be decreased obviously, especially apart from drain bar remotely and deep layer the soil body do not obtain fully plus
Gu this has had a strong impact on Foundation Treatment Effect.
2) although it is pre- to improve vacuum to a certain extent for the novel evacuated prestressing technology such as electric osmose combined vacuum prestressing technology
The drainage efficiency of pressure and then soil solidifying speed is accelerated, but this methods engineering cost is higher, is difficult to enter in Practical Project
Row is widely applied.
3) stiffening basic ground is carried out using air pressure splitting vacuum preloading and injecting gas boosting technique of soft soil foundation treatment, in engineering
Found in practical application, however open close pressure inlet of crossing blasts air into soil, just can guarantee that stable draught head, once stop gas
Body is supplied, negative pressure of vacuum reduces, and drainage rates decline immediately, causes soil stabilization not good enough, especially deep ground earth
Consolidation process effect is not fully up to expectations.
Utility model content
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, there is provided one kind can be applied to weak soil, super
The fluid injection supercharging capsule of the vacuum pre-press reinforcing processing system of Soft Ground, employs vacuum pre-press reinforcing of the present utility model
It processing system, can not only ensure that the steady pressure between drain bar and foundation soil is poor, improve vacuum preloading discharging consolidation speed,
Soil strength can also further be improved by later stage slip casting.The technical solution of the utility model is as follows：
The fluid injection supercharging capsule of a kind of fluid injection supercharging joint grouting and reinforcing super soft ground, to super soft ground
In the vacuum pre-press reinforcing processing system of reason, it is characterised in that the main body of described fluid injection supercharging capsule is that can transmit liquid pressure
The elastic sack body of power, fluid injection seal 5 is provided with the top of elastic sack body, top both sides are communicated with water injection pipe 11；Noted
During slurry construction, Grouting Pipe 10 is inserted with elastic sack body.
Employ the operation principle of the ultra-soft soil vacuum pre-press reinforcing processing system of fluid injection supercharging capsule of the present utility model
It is:Conventional vacuum preloading method is improved first, while by vaccum-pumping equipment to soil body applying vacuum negative pressure, to advance
Moisture is injected in the fluid injection supercharging capsule set, be pressurized capsule by fluid injection transmits hydraulic pressure to surrounding soil, significantly increases drain bar
Pressure differential between foundation soil, and then the drainage rates of soft soil foundation are improved, promote depth layer soil body to complete discharging consolidation.
After vacuum liquid filling supercharging terminates, it is pressurized to fluid injection in capsule and cement grout is injected by Grouting Pipe, added so as to form a slip casting
Solid stake, is pressed further by the soil body of surrounding, the hole in densification surrounding soil, is expelled from pore water unnecessary in the soil body, carries
The effective stress of weak soil has been risen, has changed soil body physico-mechanical properties, has enhanced the intensity of deep soil, and then has improved weak soil
The bearing capacity of ground.So as to realize collaboration reinforcement effect of the two methods in same place.
The ultra-soft soil vacuum pre-press reinforcing processing system of fluid injection supercharging capsule of the present utility model is employed, with prior art
Compared to advantages below：
1 construction method is simple and easy, easy for construction, while construction quality is ensured, can substantially speed up soft soil foundation
Reinforcing process.
2 is more close with conventional vacuum preloading method, and fluid injection supercharging technology can be significantly increased between drain bar and foundation soil
Pressure differential, and can continue to ensure stable pressure differential, accelerate draining simultaneously be more beneficial for pore pressure dissipation, accelerate soft soil foundation
Consolidation rate, improve efficiency of construction.
3 after vacuum liquid filling pressurization stages terminate, and directly can carry out deep layer slip casting in fluid injection supercharging Nang Chu, increase soft
Native foundation treatment depth, soft soil foundation bearing capacity is further enhanced, realize deep shallow layer soft soil foundation synchronization process simultaneously.
Two effects：First, use boost mode of the liquid as vacuum preloading, improve pressure differential, accelerate rate of consolidation and
Effect；Second, using bellows priming device after vacuum pre-press reinforcing processing is completed, further slip casting form compound foundation is carried out
Stiffening basic ground, reach the efficient combination of two kinds of consolidation effects of Same Site and permanent consolidation process effect, can be achieved shallow
Layer weak soil or depth layer joint reinforcement processing intent.
Brief description of the drawings
Fig. 1 is the overall structure diagram for employing vacuum pre-press reinforcing processing system of the present utility model.
Fig. 2 is that transverse drainage system and horizontal fluid injection are pressurized system schematic diagram.
Fig. 3 is that fluid injection of the present utility model is pressurized capsule organigram.
Fig. 4 is that vertical drainage plate and vertical fluid injection are pressurized system and arrange schematic diagram.
Label declaration in figure:1st, fluid injection supercharging equipment；2nd, vaccum-pumping equipment；3rd, sealing system；4 Water filling valves；5th, fluid injection
Seal；6th, horizontal fluid injection supercharging branch pipe；7th, horizontal branch；8th, bowknot；9th, vertical drainage plate；10th, fluid injection supercharging capsule；
11st, water injection pipe；12nd, three-way connection；13rd, horizontal fluid injection supercharging supervisor；14th, transverse drainage is responsible for；15th, Grouting Pipe.
Embodiment
Referring to Fig. 1-4, vacuum liquid filling supercharging joint deep layer injected foundation processing method, used drainage system includes perpendicular
To drain bar 9, bowknot 8, horizontal branch 7, the transverse drainage of three-way connection 12 supervisor 14 and vaccum-pumping equipment 2, wherein perpendicular
It is connected and connects with horizontal branch 7 by bowknot 8 to drain bar 9, horizontal branch 14 is further through three-way connection 12
It is connected with transverse drainage supervisor 14, transverse drainage supervisor 14 finally connects with vaccum-pumping equipment 2.Wherein, vertical drainage plate 9 is by just
Square arrangement, lays deep layer fluid injection supercharging capsule 10, the spacing 0.8-2.0m of vertical drainage plate 9 at the center of square, and fluid injection increases
The buried depth of capsule 10 is pressed to be higher than the insertion depth 0.5-1m of vertical drainage plate.
Employing fluid injection pressure charging system of the present utility model includes fluid injection supercharging capsule 10, horizontal fluid injection supercharging branch pipe 6, water filling
Valve 4, three-way connection 12, horizontal fluid injection supercharging supervisor 13 and fluid injection supercharging equipment 1.Wherein described fluid injection is pressurized capsule 10 by lightweight
Latex material is made, and can transmit fluid pressure, fluid injection supercharging capsule 10 top both sides are equipped with water injection pipe 11, and pass through water injection pipe 11
Connect horizontal fluid injection supercharging branch pipe 6.Horizontal fluid injection supercharging branch pipe 6 end is equipped with Water filling valve 4, wherein Water filling valve 4 and fluid injection
Supercharging equipment 1 is connected.Enough water is pre-charged with the fluid injection supercharging equipment 1, is treated in soil after vacustat, is opened
Fluid injection supercharging equipment 1, fluid injection seal 5 is closed, while open Water filling valve 4, water 1 passes sequentially through horizontal stroke from fluid injection supercharging equipment
It is injected into fluid injection supercharging supervisor 13, horizontal fluid injection supercharging branch pipe 6 in fluid injection supercharging capsule 10, and then near fluid injection supercharging capsule 10
The soil body receives the extra liquid pressure of application, increases the pressure differential between drain bar and foundation soil, this pressure differential is more
It is stable, so as to improve the discharging consolidation speed of vacuum preloading, after supercharging to be injected terminates, Water filling valve 4 is closed, is closed simultaneously
Close fluid injection supercharging equipment 1.
After vacuum liquid filling supercharging construction terminates, the fluid injection seal 5 that fluid injection supercharging capsule 10 top is set is opened, is increased to fluid injection
Press and Grouting Pipe 15 is inserted in capsule 10, and the cement grout being stirred in advance is injected into Grouting Pipe 15, slurries are filled into fluid injection increasing
After pressing capsule 10, because the density of water is less than serum density, water will be discharged by fluid injection seal 5, and material is thus formed a note
Reinforcing body stake is starched, while with the soil body for being pressed further by surrounding of slip casting, also changes soil body physico-mechanical properties, carries
The high bearing capacity of soft soil foundation.Wherein Grouting Pipe 15 can be from main regulation height.
Whole vacuum liquid filling supercharging combines method for processing foundation with deep layer slip casting, comprises the following steps:
First, it is the arrangement of apparatus first with connecting.After weak soil or ultra-soft soil top layer lay one layer of woven cloth, it
After set vertical drainage plate 9 and vertical fluid injection supercharging capsule 10, vertical drainage plate 9 is connected with horizontal branch 7, general transverse direction
Branch drain 7 and transverse drainage supervisor 14 connects, and vertical fluid injection is pressurized into capsule 10 and horizontal fluid injection afterwards is pressurized branch pipe 6, laterally
UNICOM, two layers of woven cloth of laying, one layer of geotextiles, one layer of diaphragm seal form sealing system 3 to fluid injection supercharging supervisor 13 successively, finally
Transverse drainage supervisor 14 is assembled with vaccum-pumping equipment 2, horizontal fluid injection supercharging supervisor 13 and the UNICOM of fluid injection supercharging equipment 1.
2nd, vacuum liquid filling pressurization stages.Vaccum-pumping equipment 2 is opened, after the vacustat in barged-in fill, opens water filling
Valve 4, opens fluid injection supercharging equipment 1, and water is pressurized system by horizontal fluid injection and is injected into fluid injection supercharging capsule 10, fluid injection is pressurized
The soil body around capsule 10 applies hydraulic pressure, increases the pressure differential between drain bar and foundation soil, and then improve the row of soft soil foundation
Water speed rate, depth layer soil body is promoted to complete discharging consolidation.
3rd, after vacuum liquid filling pressurization stages terminate, fluid injection supercharging equipment 1 is closed down, simultaneously closes off Water filling valve 4, simultaneously
The fluid injection seal 5 that fluid injection supercharging capsule 10 top is set is opened, is pressurized to fluid injection in capsule 10 and inserts Grouting Pipe 15, and to Grouting Pipe
The cement grout being stirred in advance is injected in 15, because the density of water is less than serum density, water will pass through the row of fluid injection seal 5
Go out, after slurries are filled into fluid injection supercharging capsule 10, form a slip casting pile body, enhance the intensity of deep soil, improve
The bearing capacity of soft soil foundation.
4th, after reinforced soft soil ground effect produces a desired effect, withdrawing for vacuum unloading and equipment is carried out.
Claims (1)
- A kind of 1. fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground, for handling super soft ground Vacuum pre-press reinforcing processing system in, it is characterised in that the main body of described fluid injection supercharging capsule is can transmit fluid pressure Elastic sack body, be provided with fluid injection seal (5) at the top of elastic sack body, top both sides are communicated with water injection pipe (11)；Carry out During mortar depositing construction, Grouting Pipe (10) is inserted with elastic sack body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576015.1U CN206815315U (en) | 2017-05-23 | 2017-05-23 | The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576015.1U CN206815315U (en) | 2017-05-23 | 2017-05-23 | The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground |
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| Publication Number | Publication Date |
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| CN206815315U true CN206815315U (en) | 2017-12-29 |
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| CN201720576015.1U Active CN206815315U (en) | 2017-05-23 | 2017-05-23 | The fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190725A (en) * | 2017-05-23 | 2017-09-22 | 天津大学 | A kind of fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground |
| CN113638399A (en) * | 2021-09-13 | 2021-11-12 | 天津大学 | Method for controlling soil body deformation from side by real-time dynamic repeatable reversible grouting |
-
2017
- 2017-05-23 CN CN201720576015.1U patent/CN206815315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190725A (en) * | 2017-05-23 | 2017-09-22 | 天津大学 | A kind of fluid injection supercharging capsule of fluid injection supercharging joint grouting and reinforcing super soft ground |
| CN113638399A (en) * | 2021-09-13 | 2021-11-12 | 天津大学 | Method for controlling soil body deformation from side by real-time dynamic repeatable reversible grouting |
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Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |