CN207032210U - The fluid injection of vacuum bellows is pressurized joint grouting and reinforcing super soft ground processing system - Google Patents
The fluid injection of vacuum bellows is pressurized joint grouting and reinforcing super soft ground processing system Download PDFInfo
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- CN207032210U CN207032210U CN201720576022.1U CN201720576022U CN207032210U CN 207032210 U CN207032210 U CN 207032210U CN 201720576022 U CN201720576022 U CN 201720576022U CN 207032210 U CN207032210 U CN 207032210U
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
It the utility model is related to a kind of vacuum bellows fluid injection supercharging joint grouting and reinforcing super soft ground processing system, including drainage system and fluid injection pressure charging system, fluid injection pressure charging system includes fluid injection supercharging capsule 10, horizontal fluid injection supercharging branch pipe 6, Water filling valve 4, three-way connection, horizontal fluid injection supercharging supervisor 13 and fluid injection supercharging equipment 1.Fluid injection supercharging capsule 10 is made up of the elastomeric material that can transmit fluid pressure, the top of fluid injection supercharging capsule 10 is provided with fluid injection seal 5, top both sides are communicated with water injection pipe 11, and horizontal fluid injection is connected to by water injection pipe 11 and is pressurized branch pipe 6, Water filling valve 4 is provided with horizontal fluid injection supercharging branch pipe 6, vertical drainage plate 9 is distributed in the periphery of fluid injection supercharging capsule 10.
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 is applied to weak soil, ultra-soft soil
The novel evacuated ground preloading processing system of base processing, the utility model are pressurized joint deep layer slip casting using the fluid injection of vacuum bellows,
It can not only ensure that the steady pressure between drain bar and foundation soil is poor, improve vacuum preloading discharging consolidation speed, moreover it is possible to pass through
Later stage slip casting further improves soil strength.The technical solution of the utility model is as follows：
A kind of vacuum bellows fluid injection is pressurized joint grouting and reinforcing super soft ground processing system, including drainage system and fluid injection
Pressure charging system, described drainage system connect including multiple vertical drainage plates (9), bowknot (8), horizontal branch (7), three
Head (12), transverse drainage supervisor (14) and vaccum-pumping equipment (2), wherein, vertical drainage plate (9) is by bowknot (8) and laterally
Branch drain (7) is connected and connected, and transverse drainage is responsible for (14) and is responsible for (14) phase further through three-way connection (12) and transverse drainage
Even, transverse drainage supervisor (14) finally connects with vaccum-pumping equipment (2), it is characterised in that
Described fluid injection pressure charging system include fluid injection supercharging capsule (10), horizontal fluid injection supercharging branch pipe (6), Water filling valve (4),
Three-way connection, horizontal fluid injection supercharging supervisor (13) and fluid injection supercharging equipment (1), wherein the main body of fluid injection supercharging capsule (10) is
The elastic sack body of fluid pressure can be transmitted, fluid injection seal (5) is provided with the top of elastic sack body, top both sides are communicated with note
Water pipe (11), and horizontal fluid injection is connected to by water injection pipe (11) and is pressurized branch pipe (6), set on horizontal fluid injection supercharging branch pipe (6)
Water filling valve (4) is equipped with, each horizontal fluid injection supercharging branch pipe (6) is pressurized supervisor (13) and fluid injection supercharging equipment by horizontal fluid injection
(1) it is connected, vertical drainage plate (9) is distributed in the periphery of fluid injection supercharging capsule (10)；When carrying out mortar depositing construction, in elastic sack body
It is inserted with Grouting Pipe (15).
Preferably, vertical drainage plate presses arranged in squares, and fluid injection supercharging capsule is laid in the center of square, vertical drainage plate
Spacing 0.8-2.0m, the buried depth of fluid injection supercharging capsule are higher than the insertion depth 0.5-1m of vertical drainage plate.
The utility model is directed to conventional vacuum pre-pressed soft soil foundation reinforcement technique feature, compared with prior art with following
Advantage：
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 overall structure diagram of the present utility model.
Fig. 2 is that transverse drainage system of the present utility model 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 of the present utility model 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, the utility model vacuum liquid filling supercharging joint deep layer injected foundation processing method, used draining
System is responsible for 14 and vacuumized and sets including vertical drainage plate 9, bowknot 8, horizontal branch 7, the transverse drainage of three-way connection 12
Standby 2, wherein vertical drainage plate 9 is connected and connected with horizontal branch 7 by bowknot 8, transverse drainage be responsible for 14 further through
Three-way connection 12 is connected with transverse drainage supervisor 14, and transverse drainage supervisor 14 finally connects with vaccum-pumping equipment 2.Wherein, vertically
Drain bar (9) presses arranged in squares, and deep layer fluid injection supercharging capsule 10, vertical drainage plate (9) spacing are laid at the center of square
0.8-2.0m, the buried depth of fluid injection supercharging capsule 10 are higher than the insertion depth 0.5-1m of vertical drainage plate.
Fluid injection pressure charging system include 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 fluid injection supercharging capsule 10 is made up of lightweight latex material, can be with
Fluid pressure is transmitted, fluid injection supercharging capsule 10 top both sides are equipped with water injection pipe 11, and connect horizontal fluid injection by water injection pipe 11 and be pressurized
Branch pipe 6.Horizontal fluid injection supercharging branch pipe 6 end is equipped with Water filling valve 4, and wherein Water filling valve 4 is connected with fluid injection supercharging equipment 1.
Enough water is pre-charged with the fluid injection supercharging equipment 1, is treated in soil after vacustat, opens fluid injection supercharging equipment 1, is closed
Fluid injection seal 5 is closed, while opens Water filling valve 4, water 1 passes sequentially through horizontal fluid injection supercharging supervisor from fluid injection supercharging equipment
13rd, horizontal fluid injection supercharging branch pipe 6 is injected into fluid injection supercharging capsule 10, and then the soil body near fluid injection supercharging capsule 10 receives application
Extra liquid pressure, increase the pressure differential between drain bar and foundation soil, this pressure differential is relatively stable, so as to improve
The discharging consolidation speed of vacuum preloading, after supercharging to be injected terminates, Water filling valve 4 is closed, simultaneously closes off 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.
Vacuum liquid filling supercharging of the present utility model combines method for processing foundation with deep layer slip casting, comprises the following steps:
One) 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.
Two) 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.
Three) 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.
Four) after reinforced soft soil ground effect produces a desired effect, withdrawing for vacuum unloading and equipment is carried out.
Operation principle of the present utility model is:Conventional vacuum preloading method is improved first, by vaccum-pumping equipment to
While soil body applying vacuum negative pressure, moisture is injected into the fluid injection supercharging capsule set in advance, capsule is pressurized to surrounding by fluid injection
The soil body transmits hydraulic pressure, significantly increases the pressure differential between drain bar and foundation soil, and then improves the draining speed of soft soil foundation
Rate, depth layer soil body is promoted to complete discharging consolidation.After vacuum liquid filling supercharging terminates, it is pressurized in capsule to fluid injection and is noted by Grouting Pipe
Enter cement grout, so as to form a grouting and reinforcing body stake, be pressed further by the soil body of surrounding, the hole in densification surrounding soil
Gap, pore water unnecessary in the soil body is expelled from, improves the effective stress of weak soil, change soil body physico-mechanical properties, strengthened
The intensity of deep soil, and then improve the bearing capacity of soft soil foundation.So as to realize association of the two methods in same place
Same reinforcement effect.
Claims (2)
1. a kind of vacuum bellows fluid injection is pressurized joint grouting and reinforcing super soft ground processing system, including drainage system and fluid injection increase
Pressure system, described drainage system include multiple vertical drainage plates (9), bowknot (8), horizontal branch (7), three-way connection
(12), transverse drainage supervisor (14) and vaccum-pumping equipment (2), wherein, vertical drainage plate (9) is by bowknot (8) with laterally arranging
Water branch pipe (7) is connected and connected, and transverse drainage is responsible for (14) and is connected further through three-way connection (12) with transverse drainage supervisor (14),
Transverse drainage supervisor (14) finally connects with vaccum-pumping equipment (2), it is characterised in that
Described fluid injection pressure charging system includes fluid injection supercharging capsule (10), horizontal fluid injection supercharging branch pipe (6), Water filling valve (4), threeway
Joint, horizontal fluid injection supercharging supervisor (13) and fluid injection supercharging equipment (1), wherein the main body of fluid injection supercharging capsule (10) is can be with
The elastic sack body of fluid pressure is transmitted, is provided with fluid injection seal (5) at the top of elastic sack body, top both sides are communicated with water injection pipe
(11), and horizontal fluid injection is connected to by water injection pipe (11) and is pressurized branch pipe (6), be provided with horizontal fluid injection supercharging branch pipe (6)
Water filling valve (4), each horizontal fluid injection supercharging branch pipe (6) are pressurized supervisor (13) and fluid injection supercharging equipment (1) by horizontal fluid injection
It is connected, vertical drainage plate (9) is distributed in the periphery of fluid injection supercharging capsule (10)；When carrying out mortar depositing construction, inserted in elastic sack body
There is Grouting Pipe (15).
2. basement process system according to claim 1, it is characterised in that vertical drainage plate presses arranged in squares, fluid injection
Supercharging capsule is laid in the center of square, and vertical drainage plate spacing 0.8-2.0m, the buried depth of fluid injection supercharging capsule is higher than vertical
The insertion depth 0.5-1m of drain bar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576022.1U CN207032210U (en) | 2017-05-23 | 2017-05-23 | The fluid injection of vacuum bellows is pressurized joint grouting and reinforcing super soft ground processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720576022.1U CN207032210U (en) | 2017-05-23 | 2017-05-23 | The fluid injection of vacuum bellows is pressurized joint grouting and reinforcing super soft ground processing system |
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| Publication Number | Publication Date |
|---|---|
| CN207032210U true CN207032210U (en) | 2018-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100161A (en) * | 2017-05-23 | 2017-08-29 | 天津大学 | A kind of vacuum bellows fluid injection is pressurized joint grouting and reinforcing super soft ground processing system |
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2017
- 2017-05-23 CN CN201720576022.1U patent/CN207032210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100161A (en) * | 2017-05-23 | 2017-08-29 | 天津大学 | A kind of vacuum bellows fluid injection is pressurized joint grouting and reinforcing super soft ground processing system |
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 300350 Haijing garden, Haihe Education Park, Jinnan, Tianjin, 135, Tianjin University. Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
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