CN206736888U - A kind of novel evacuated pre-pressing system of Soft Ground - Google Patents
A kind of novel evacuated pre-pressing system of Soft Ground Download PDFInfo
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- CN206736888U CN206736888U CN201720092311.4U CN201720092311U CN206736888U CN 206736888 U CN206736888 U CN 206736888U CN 201720092311 U CN201720092311 U CN 201720092311U CN 206736888 U CN206736888 U CN 206736888U
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Abstract
The utility model discloses a kind of novel evacuated pre-pressing system of Soft Ground, including pumped vacuum systems, pumped vacuum systems includes vertical vacuum extractor and horizontal vacuum extractor, vertical axis vacuum plant includes crossover sub, drain bar and vacuum-pumping tube, the outer connecting leg of crossover sub upwardly extends, and drain bar passes through crossover sub；Horizontal vacuum extractor includes supervisor, chimney filter, hand-type joint, four connectors and wired hose, drain bar upper end connection water wrench type joint lower end, the outer connecting leg connection chimney filter of hand-type joint, four connectors connect the outer connecting leg of hand-type joint and wired hose respectively, the other end of wired hose connects lateral vacuum-pumping tube, the outer connecting leg of other end coupling adapter of lateral vacuum-pumping tube, supervisor both ends connect chimney filter and vavuum pump respectively.The linear loss of vacuum is reduced, the efficiency of vacuum preloading has been increased considerably, the application of novel evacuated pre-pressing system, easy construction, low cost, short time limit, has been used suitable for a wide range of.
Description
Technical field
The utility model is related to a kind of Soft Soil Subgrade Treatment Techniques field, and in particular to a kind of Soft Ground it is new
Type vacuum prepressing system, the basement process of be particularly suitable for use in deep soft clay, barged-in fill or muck soil etc..
Background technology
Vacuum method is first to lay sand bedding course on the soft soil foundation surface to need reinforcement, then buries vertical drain
Road, then make itself and atmospheric isolation with air-locked close membrane, by the suction piping buried in sand bedding course, using vavuum pump or its
He vacuumizes means, makes to form negative pressure under its film, increases the effective stress of ground.To be obtained with vacuum prepressing reinforcement soft base
Effect, first seeks to increase " prefabricating load " as far as possible, that is, improves under-membrance vacuum degree, and second seeks to improve soil layer deep
Consolidation effect, that is, to reduce resistance and loss that drainage channel transmits vacuum.
In traditional vacuum prepressing system, generally use sand bedding course and chimney filter as horizontal drainage and evacuation passageway,
The uniform hole of spacing is distributed with chimney filter, vacuum pressure is passed to by sand bedding course by chimney filter, then by sand bedding course and perpendicular
Negative pressure of vacuum is transmitted to soil layer depths to drainage channel, vacuum linear loss is bigger in the process, real in deep soil
Border vacuum is smaller, and drainage effect is bad.That is commonly used in vacuum preloading vertical vacuumizes and drainage channel is drain bar, draining
It is core plate among plate, plays a supportive role and discharge the water that filtering layer penetrates into upwards, two sides is that nonweaven geotextile parcel was used as
Filtering layer, substantially reduce the consolidation time of weak soil.However, deposited using drain bar as the draining of vacuum preloading and evacuation passageway
In some problems, traditional vacuum pre-pressing system, drain bar is usually to be directly inserted in sand bedding course either to use with chimney filter
Improving bud grafting connects, and the water suction of chimney filter and vacuum transmission effect are all bad, and because well resistance and smear effect vacuum exist
Depth direction is gradually decayed, for compared with deep soft foundation, drain bar lower end vacuum is smaller, and vacuum preloading is imitated to top layer soil stabilization
Fruit is obvious, is difficult to meet the requirements for deep weak soil layer treatment effect.
Utility model content
For, this reality bad to the treatment effect of deep layer Soft Soil Layer that solve the problems, such as that mode is tied up in the above-mentioned use being previously mentioned
A kind of novel evacuated pre-pressing system of Soft Ground is provided with new patent, is added in drain bar lower semisection
Vacuum, the drainage efficiency of drain bar in the earth formation is improved, the effective depth of vacuum prepressing ground foundation treatment method is added, subtracts
The small linear loss of vacuum, has increased considerably the efficiency of vacuum preloading.
The utility model solve inspection technical problem technical scheme be：
A kind of novel evacuated pre-pressing system of Soft Ground, including pumped vacuum systems, sealing system, described takes out
Vacuum system includes vertical vacuum extractor and horizontal vacuum extractor, described vertical axis vacuum plant include crossover sub,
Drain bar and vertical vacuum-pumping tube, described crossover sub are the hollow cavity of upper and lower opening, and the middle part connection conversion of cavity connects
The outer connecting leg of head, the outer connecting leg of described crossover sub upwardly extend, and the outer connecting leg of the crossover sub connects vertical vacuum-pumping tube, described
Lateral vacuum-pumping tube be vertical tube, and upper end is basseted, and described drain bar passes through crossover sub cavity, described drain bar
Ground is stretched into lower end, and upper end is basseted；
It is soft that described horizontal vacuum extractor includes supervisor, chimney filter, draining spanner type joint, four connectors and steel wire
Pipe, described draining spanner type joint is the hollow cavity of upper and lower opening, and the middle part of cavity is provided with draining spanner type joint
Outer connecting leg, the outer connecting leg of described draining spanner type joint are the pipeline of horizontal direction, and drain bar upper end connects water wrench type joint
Lower end, one section of connection chimney filter of the outer connecting leg of draining spanner type joint, one end of chimney filter connect a pair pairs of cornues of four connectors,
The diagonal pipe connection wired hose of four connectors another pair, the other end of wired hose connect one end of lateral vacuum-pumping tube,
The outer connecting leg of other end coupling adapter of the lateral vacuum-pumping tube, described supervisor both ends connect chimney filter and are located at envelope respectively
The vavuum pump for being used to draw water is closed outside system；
The sealing system includes sealing press mold, sealing press mold ditch, and the sealing press mold ditch is in outermost plastic row
The closing ditch excavated on the soft soil foundation of water plate periphery, some layers of sealing press mold are laid on sealing press mold ditch, are filled by membrane
Put horizontal drainage in the outer vacuum extractor of junctional membrane and film and vacuumize supervisor；Soft soil foundation ground surface and sealing press mold ditch surface
Protective layer one is laid, in the top of protective layer laying sealing press mold.
Further, described crossover sub is provided with the hole being fixed on for crossover sub on drain bar.
Further, the outer connecting leg of the crossover sub on the crossover sub upwardly extends length not less than 5 centimetres.
Further, the outer connecting leg both sides leakage partial-length of described draining spanner type joint is not less than 5 centimetres.
Further, the protective layer one includes one layer of woven cloth being connected and one layer of nonweaven geotextile.Prevent
As soil deformation punctures top seal press mold during vacuum preloading.
Further, the chimney filter and plastic draining spanner type joint, vacuum-pumping tube and wired hose junction, four-way
Protective layer two is overlayed with chimney filter and wired hose junction, the protective layer two is one layer of nonweaven geotextile, is prevented in vacuum
As soil deformation punctures top seal press mold in pre-compaction process.
The beneficial effects of the utility model：
1. the connection of horizontal drainage and vertical drainage evacuation passageway, by draining spanner type joint by horizontal drainage chimney filter
Connect with drain bar, connected lateral vacuum-pumping tube with chimney filter with wired hose by four connectors, constitute a kind of new
Straight-line pumped vacuum systems.Vacuumized by vertical step and drainage system, add the vacuum in drain bar lower semisection
Degree, improves the drainage efficiency of drain bar in the earth formation, adds the effective depth of vacuum prepressing ground foundation treatment method.Using straight
Row's formula vacuum preloading method, transmits vacuum and horizontal drainage is replaced by chimney filter, reduces the linear loss of vacuum, significantly
Add the efficiency of vacuum preloading.The application of novel evacuated pre-pressing system, easy construction, low cost, short time limit, suitable for big model
Enclose use.
Brief description of the drawings
The novel evacuated pre-pressing system horizontal layout schematic diagrames of Fig. 1；
The novel evacuated pre-pressing system cross-sectional views of Fig. 2；
Fig. 3 crossover sub planar structure schematic diagrams；
Fig. 4 draining spanner type joint plane structural representations；
Fig. 5 four-way connector construction schematic diagrames；
1st, crossover sub, 2, vertical vacuum-pumping tube, 3, drain bar, 4, four connectors, 5, draining spanner type joint, 6, filter
Pipe, 7, supervisor, 8, wired hose, 9, vavuum pump, 10, sealing press mold ditch, 11, sealing press mold, 12, the outer connecting leg of crossover sub, 13,
Crossover sub fixing hole, 14, soft soil foundation, 51, draining spanner type joint fixing hole, 52, the outer connecting leg of draining spanner type joint.
Embodiment
Embodiment one：
The utility model is a kind of novel evacuated pre-pressing system of Soft Ground, real with reference to accompanying drawing and concrete application
Example is further described to specific embodiment of the present utility model.
A kind of novel evacuated pre-pressing system of Soft Ground, including pumped vacuum systems, sealing system, described takes out
Vacuum system includes vertical vacuum extractor and horizontal vacuum extractor, described vertical axis vacuum plant include crossover sub 1,
Drain bar 3 and vertical vacuum-pumping tube 2, described crossover sub 1 are the hollow cavity of upper and lower opening, and the middle part connection of cavity is changed
The outer connecting leg 12 of joint, the outer connecting leg 12 of described crossover sub upwardly extend, the outer connecting leg 12 of the crossover sub on the crossover sub 1
Partial-length is upwardly extended not less than 5 centimetres, the outer connecting leg 12 of crossover sub connects lateral vacuum-pumping tube 2, and described laterally taking out is true
Blank pipe 2 is vertical tube, and upper end is basseted, and described drain bar 3 passes through the cavity of crossover sub 1, is set on described crossover sub 1
There is the crossover sub fixing hole 11 being fixed on for crossover sub 1 on drain bar 3, ground, upper end are stretched into the described lower end of drain bar 3
Basset；
Described horizontal vacuum extractor includes supervisor 7, chimney filter 6, the hand-type joint 5 of drain bar 3, four connectors 4 and steel
Silk flexible pipe 8, the described hand-type joint 5 of drain bar 3 is the hollow cavity of upper and lower opening, and the middle part of cavity is provided with the hand of drain bar 3
The outer connecting leg 52 of type joint, the outer both sides of the connecting leg 52 leakage partial-length of the described hand-type joint of drain bar 3 are described not less than 5 centimetres
The outer connecting leg 52 of the hand-type joint of drain bar 3 be horizontal direction pipeline, the lower end of the upper end of drain bar 3 connection water wrench type joint 5, row
One section of connection chimney filter 6 of the outer connecting leg 52 of the hand-type joint of water plate 3, one end of chimney filter 6 connect a pair pairs of cornues of four connectors 4,
The diagonal pipe connection wired hose 8 of the another pair of four connectors 4, the other end of wired hose 8 connect the one of lateral vacuum-pumping tube 2
End, the described both ends of supervisor 7 connect chimney filter 6 and are located at the vavuum pump 9 outside closed system for drawing water respectively.
The sealing system includes sealing press mold 11, sealing press mold ditch 10, and the sealing press mold ditch 10 is outermost
The closing ditch excavated on the soft soil foundation of plastic draining board periphery, some layers of sealing press mold are laid on sealing press mold ditch 10, are led to
Cross horizontal drainage in the outer vacuum extractor of membrane device junctional membrane and film and vacuumize supervisor；Soft soil foundation ground surface and sealing pressure
Protective layer one is laid on the surface of film ditch 10, in the top of protective layer one laying sealing press mold 11.
The protective layer one includes one layer of woven cloth being connected and one layer of nonweaven geotextile.Prevent in vacuum preloading mistake
As soil deformation punctures top seal press mold in journey.
The chimney filter and plastic draining spanner type joint, vacuum-pumping tube and wired hose junction, four-way and chimney filter and
Wired hose junction overlays protective layer two., the protective layer two is one layer of nonweaven geotextile., prevent in vacuum preloading mistake
As soil deformation punctures top seal press mold in journey.
Embodiment two：
One Soft Ground engineering, between the plain fill thickness 4.0-5.5m of top layer, auger ground is mud, silty
Novel evacuated pre-pressing system is applied to this place vacuum preloading in 1.5m or so by clay layer thickness 15m or so, groundwater level
Basement process, Specific construction technique is as follows：
According to live stratum and underground aqueous condition, with reference to the foundation strength and deformation requirements of design requirement, drain bar 3 is determined
2 respective length of length and lateral vacuum-pumping tube.Smooth location, remove debris, measurement starting ground elevation, first in ground surface
Lay one layer of woven cloth and one layer of nonweaven geotextile.Using straight-line horizontal drainage and evacuation passageway, tradition can be cancelled
Sand bedding course in vacuum prepressing system, in order to cost-effective, it can be fetched earth, adopted according to job site periphery earth's surface soil property status on-site
Working cushion layer is used as by the use of 0.3-0.5m silt or silty clay.The embedded vertical vacuum extractor of placement is transferred using sleeve pipe
Passage.
First, drain bar 3 is passed through into crossover sub 1, drain bar 3 is fixed on by drain bar by crossover sub fixing hole 13
On 3, lateral vacuum-pumping tube 22 is connected firmly with connecting leg outside crossover sub 12, vertical vacuum extractor is formed, then, this is filled
Put using soft base precalculated position is mechanically inserted, drain bar 3 exposes long 0.5m of mat surface or so, the lateral exposure pad of vacuum-pumping tube 2
Layer is less than 5cm, prevents as vacuum preloading carries out causing foundation soil body deformation to poke sealing press mold 11.Vertical vacuum extractor phase
Mutually interval 0.7-1.1m, square arrangement, so repeatedly, arrangement is with completing preprocessing field.Placing vertical vacuum extractor
When, by the bottom end seal of drain bar 3, prevent mud from blocking drainage channel.The infiltration coefficient of soil layer is smaller or level of ground water compares
When low, crossover sub 1 can be fixed on close to the bottom end of drain bar 3, soil layer infiltration coefficient is big or level of ground water is higher
When, the fixed position of crossover sub 1 can be properly increased.In this example, soil layer 20m, groundwater level 1.5m a left side need to be handled
The right side, the length of drain bar 3 are defined as 21m, and crossover sub 1 is fixed on from the bottom 8m of drain bar 3.
Row's transverse direction vacuum extractor is provided between every vertical vacuum extractor of two rows, in each row's transverse direction vacuum extractor
End be chimney filter 6, one end of chimney filter 6 of one of end connects the supervisor 7 vertical with the horizontal direction of chimney filter 6, and connection is responsible for 7
The other end of chimney filter 6 connect four connectors 4, the corresponding of four connectors 4 connect another chimney filter 6 to cornue, pass through four
Connectors 4 and chimney filter 6 substitute connection and form long row, and another of each four-way connects two wired hoses 8 to cornue, each
The lateral upper end of vacuum-pumping tube 2 in side, draining spanner type joint 55 connect the draining basseted to the other end of wired hose 8 respectively
Plate 3, often arrange chimney filter 6 and set spacing so repeatedly, to complete horizontal pumped vacuum systems installation away from 1.4-2.2m.
Sealing press mold ditch 10 is dug, lays three-layer sealed press mold 11, completes closed system.Connect in chimney filter 6 and draining spanner type
At first 5, lateral vacuum-pumping tube 2 and the junction of wired hose 8, four connectors 4 overlay with chimney filter 6 and the junction of wired hose 8
One layer of nonweaven geotextile, prevent during vacuum preloading as soil deformation punctures top seal press mold 11.
By membrane device by the supervisor 7 in the vacuum extractor in film and the vavuum pump 9 outside film, vacuum preloading system is completed
System, need to check the gas leakage situation of closed system before examination vacuumizes.
The utility model is implemented by procedure below, to soft soil foundation smooth location, removes debris, measurement starting ground is high
Journey, first lay one layer of woven cloth and one layer of nonweaven geotextile in ground surface；According to live stratum and underground aqueous condition, with reference to setting
Desired foundation strength and deformation requirements are counted, it is determined that the length of vertical displacement hull plastic draining board and lateral vacuum-pumping tube are each
Length, the infiltration coefficient of soil layer is smaller or level of ground water than it is relatively low when, crossover sub can be fixed on close to plastic draining
Plate bottom end；When soil layer infiltration coefficient is greatly or level of ground water is higher, the fixed position of crossover sub can be properly increased.
In this example, soil layer 20m, groundwater level 1.5m or so need to be handled, plastic draining board length is defined as 21m, and crossover sub is solid
It is scheduled on from the 8m of plastic draining board bottom.Using straight-line horizontal drainage and evacuation passageway, traditional vacuum precompressed can be cancelled
Sand bedding course in system, in order to cost-effective, it can be fetched earth according to job site periphery earth's surface soil property status on-site, using 0.3-
0.5m silt or silty clay is as working cushion layer.By plastic draining board bottom end seal, prevent mud from blocking drainage channel；
Crossover sub (1) is penetrated from plastic draining board (3) one end, and then will by crossover sub fixing hole (14) through specified location
Crossover sub is fixed on plastic draining board.Plastic draining board, crossover sub and lateral vacuum-pumping tube are connected and composed into vertical ladder
Level evacuation passageway.Set vertical drainage and vacuumize, plastic draining board is according to arranged in squares, spacing 1m, using under sleeve pipe
Embedded step evacuation passageway is put, plastic draining board exposes long 0.5m of mat surface or so, and lateral vacuum-pumping tube exposure bed course is small
In 5cm, prevent as vacuum preloading is carried out, sealing press mold is poked in foundation soil body deformation；Horizontal drainage supervisor and chimney filter are laid,
Located level drainage pipe between two row's step evacuation passageways, chimney filter spacing between rows and rows 2m, horizontal drainage supervisor's spacing
Control is in 30m；Horizontal drainage and vertical drainage evacuation passageway are connected, is filtered horizontal drainage by plastic draining spanner type joint
Pipe is connected with plastic draining board, and lateral vacuum-pumping tube is connected with chimney filter with wired hose by four connectors, constitutes one
The new straight-line pumped vacuum systems of kind；Horizontal drainage chimney filter and plastic draining spanner type joint, lateral vacuum-pumping tube with
Wired hose junction, four-way and chimney filter and wired hose junction overlay one layer of nonweaven geotextile, prevent in vacuum preloading
During puncture top seal press mold with soil deformation；Laying sealing press mold, is connected by membrane device in sealing press mold ditch
Connect horizontal drainage in the outer vacuum extractor of film and film and vacuumize supervisor；Examination vacuumizes, and checks on film and seal ditch gas leakage situation；
Formally vacuumize, carry out the vacuum preloading operation in place.
Claims (7)
1. a kind of novel evacuated pre-pressing system of Soft Ground, including pumped vacuum systems, sealing system, its feature exist
In described pumped vacuum systems includes vertical vacuum extractor and horizontal vacuum extractor, described vertical axis vacuum plant bag
Crossover sub, drain bar, lateral vacuum-pumping tube and vacuum-pumping tube are included, described crossover sub is set to the middle cavity of upper and lower opening
Body, the outer connecting leg of middle part side connection crossover sub of cavity, the outer connecting leg of described crossover sub upwardly extend, the crossover sub
Connecting tube connects lateral vacuum-pumping tube, and described lateral vacuum-pumping tube is vertical tube, and upper end is basseted, and described drain bar is worn
Crossover sub cavity is crossed, ground is stretched into described drain bar lower end, and upper end is basseted；
Described horizontal vacuum extractor includes supervisor, chimney filter, draining spanner type joint, four connectors and wired hose, institute
The draining spanner type joint stated is the hollow cavity of upper and lower opening, and the middle part of cavity is provided with the outer connecting leg of draining spanner type joint,
The outer connecting leg of described draining spanner type joint is the pipeline of horizontal direction, drain bar upper end connection water wrench type joint lower end, is arranged
One section of connection chimney filter of the outer connecting leg of water wrench type joint, the other end of chimney filter connect a pair pairs of cornues of four connectors, four-way
Another diagonal pipe connection wired hose of connector, the other end of wired hose connects one end of lateral vacuum-pumping tube, described
Supervisor both ends connect chimney filter and are located at the vavuum pump outside closed system for drawing water respectively；
The sealing system includes sealing press mold, sealing press mold ditch, and the sealing press mold ditch is in outermost plastic draining board
The closing ditch excavated on the soft soil foundation of periphery, some layers of sealing press mold are laid on sealing press mold ditch, are connected by membrane device
Connect horizontal drainage in the outer vacuum extractor of film and film and vacuumize supervisor；Soft soil foundation ground surface and the laying of sealing press mold ditch surface
Protective layer one, in the top of protective layer laying sealing press mold.
2. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 1, it is characterised in that described
Crossover sub be provided with and be fixed on hole on drain bar for crossover sub.
3. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 1, it is characterised in that described
Draining spanner type joint be provided with water supply and sewage wrench type joint and be fixed on hole on drain bar.
4. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 1, it is characterised in that described
The outer connecting leg of crossover sub on crossover sub upwardly extends length not less than 5 centimetres.
5. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 1, it is characterised in that described
The outer connecting leg both sides leakage partial-length of plastic draining spanner type joint be not less than 5 centimetres.
6. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 1, it is characterised in that described
Protective layer one includes one layer of woven cloth being connected and one layer of nonweaven geotextile, prevents during vacuum preloading with the soil body
Deformation punctures top seal press mold.
7. the novel evacuated pre-pressing system of a kind of Soft Ground as described in claim 6, it is characterised in that described
Chimney filter is connected with plastic draining spanner type joint, vacuum-pumping tube and wired hose junction, four-way and chimney filter and wired hose
Place overlays protective layer two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720092311.4U CN206736888U (en) | 2017-01-22 | 2017-01-22 | A kind of novel evacuated pre-pressing system of Soft Ground |
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| CN201720092311.4U CN206736888U (en) | 2017-01-22 | 2017-01-22 | A kind of novel evacuated pre-pressing system of Soft Ground |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759230A (en) * | 2017-01-22 | 2017-05-31 | 山东正元建设工程有限责任公司 | The novel evacuated pre-pressing system and processing method of a kind of Soft Ground |
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2017
- 2017-01-22 CN CN201720092311.4U patent/CN206736888U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759230A (en) * | 2017-01-22 | 2017-05-31 | 山东正元建设工程有限责任公司 | The novel evacuated pre-pressing system and processing method of a kind of Soft Ground |
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