CN203891004U - Vacuum pre-pressing solidification draining channel - Google Patents
Vacuum pre-pressing solidification draining channel Download PDFInfo
- Publication number
- CN203891004U CN203891004U CN201420315969.3U CN201420315969U CN203891004U CN 203891004 U CN203891004 U CN 203891004U CN 201420315969 U CN201420315969 U CN 201420315969U CN 203891004 U CN203891004 U CN 203891004U
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- Prior art keywords
- draining
- drainage
- pipe
- drainage pipe
- channel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007711 solidification Methods 0.000 title abstract 4
- 230000008023 solidification Effects 0.000 title abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract 2
- 238000003809 water extraction Methods 0.000 abstract 1
- 108091006146 Channels Proteins 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 239000002689 soil Substances 0.000 description 11
- 238000007596 consolidation process Methods 0.000 description 10
- 238000007599 discharging Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 150000002505 iron Chemical class 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012279 drainage procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a vacuum pre-pressing solidification draining channel. The channel comprises one or more upper draining pipelines (1) and one lower draining pipeline (2), the adjacent upper draining pipelines (1) are in sealing connection, and the upper draining pipelines (1) and the lower draining pipeline (2) are in sealing connection. A hole for water extraction is formed in the lower draining pipeline (2). The draining channel is used for vacuum pre-pressing solidification draining construction, it is ensured that the draining channel cannot be horizontally bent and deformed greatly, and draining solidification can be smoothly and effectively carried out.
Description
Technical field
The utility model belongs to vacuum preconsolidation water discharge technology field, relates to a kind of vacuum preconsolidation drainage.
Background technology
Vacuum method is first to lay sand cushion on the soft foundation surface needing reinforcement, then bury vertical drainage pipeline (band drain) underground, make itself and atmospheric isolation with air-locked closing membrane again, film surrounding is buried in the earth, by the suction piping of burying underground in sand cushion, bleed with vacuum plant, make it form vacuum, the now pressure reduction seepage flow of the pore water in muddy soft soil because producing, water can be discharged from drainage pipe, because the water content of the soil body declines, the effective stress of ground also just increases thereupon, and it is fixed that mucky soil is known from experience generation.
At present, conventional band drain is made up of quilted plastic panel and filter membrane overcoat.Can obtain good consolidation draining effect although apply this conventional band drain in conventional vacuum preconsolidation drainage construction process, but through many experimental studies and engineering practice, it is very large that we find that high-moisture soft foundation carries out the horizontal movement of weak soil in conventional vacuum preconsolidation drainage procedure, be easy to cause the transverse horizontal flexural deformation of band drain, beautiful really wait and find by indoor model test as recorded, the large deformation of barged-in fill even fractures the band drain distortion that is distorted.This distortion very easily causes band drain water-permeable passage to block, and then causes the failure of consolidation draining.Once band drain is distorted to be out of shape and to fracture and just can not again utilizes, and causes the waste of material.Plastic draining board drainage performance after Wang Bo etc. finish Shenzhen Qian Wan foundation treatment engineering has carried out more comprehensive research, it is original 54.4% that the bending distortion of finding band drain after work causes longitudinal flowing water measuring to be reduced to, and illustrates that the water flowing performance of band drain also can reduce in vacuum.Meanwhile, in conventional vacuum preconsolidation drainage construction process, because the negative pressure value of band drain declines rapidly with the vertical drainage degree of depth, the consolidation draining effect of the orlop soil body is not very desirable.
Utility model content
The problem declining rapidly with the degree of depth in order to solve the band drain flexural deformation problem that occurs in conventional vacuum preconsolidation drainage construction process and negative pressure value, the utility model provides a kind of vacuum preconsolidation drainage channel.The drainage channel that the utility model provides, is used in vacuum preconsolidation drainage construction, can ensure that the distortion of larger horizontal curvature does not occur drainage channel, make discharging consolidation can be smoothly, effectively carry out.The technical solution of the utility model is as follows:
A kind of vacuum preconsolidation drainage channel, comprise above top drainage pipe (1) and a bottom drainage pipe (2), between adjacent top drainage pipe (1) and between top drainage pipe (1) and bottom drainage pipe (2), be mutually tightly connected, on described bottom drainage pipe, offer the hole for drawing water.
As preferred embodiment, be fixedly connected with shoe (4) in the lower end of bottom drainage pipe (2), the front end of described shoe (4) is sharp; Each described drainage pipe is iron pipe, there is nonwoven geotechnique weave cotton cloth (3) in the outer cover of bottom drainage pipe (2), be enclosed with wire gauze (5) at the weave cotton cloth skin of (3) of nonwoven geotechnique, in case come off in work progress.
The utility model improves existing vacuum preloading drainage, adopt the large rigidity pipe of irony as the passage of draining, but it only transmits negative pressure, does not carry out the draining of mud.When construction, water in mud enters whole longitudinal drainage passage by that draining pipe of foot, and drainage channel is discharged soil body surface thus, can ensure that the distortion of larger horizontal curvature does not occur drainage channel, make discharging consolidation can be smoothly, effectively carry out; Meanwhile, ensure the required larger negative pressure of lower floor's soil body draining as the hard material of drainage channel, can accelerate drainage rates, ensured programming, there is simple feature.The longitudinal drainage passage of irony can recycle, and avoids unnecessary waste.
Brief description of the drawings
Fig. 1 is the overall structure figure of longitudinal drainage passage of the present utility model.
Fig. 2 is the three-dimensional partial schematic diagram of top longitudinal drainage passage single pipe.
Fig. 3 adopts the schematic diagram that pulls out drainage channel in hydraulic jack.
Number in the figure explanation: 1 single drainage pipe; 2 draining pipes; 3 nonwoven geotechniques weave cotton cloth; 4 shoes; 5 outsourcing wire gauze; 6 screwed connections place add rubber pad; 7 screw threads; 8 rubber rings; 9 hydraulic jack; 10 hydraulic jack; 11 first iron plates (base plate); 12 second iron plates (top board); 13 sand cushions; 14 mud; 15 the 3rd iron plates (top board).
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described.
The utility model improves existing vacuum preloading water discharge technology, adopt the large rigidity pipe of irony as the passage of draining, but it only transmits negative pressure, does not carry out the draining of mud.Water in mud enters whole longitudinal drainage passage by that draining pipe of foot, and drainage channel is discharged soil body surface thus.When construction, first carry out the discharging consolidation (every layer of mud is 2 meters) of bottommost one deck mud, treat fixed completing, above pull out this drainage channel, carry out the discharging consolidation of upper strata mud, until all layer mud completes discharging consolidation.
Referring to Fig. 1, Fig. 2.The vacuum preconsolidation longitudinal drainage passage that the utility model adopts, is made up of many drainage pipes 1 and a draining pipe 2, and drainage pipe 1 internal diameter is 8.5cm, and external diameter is 9cm, and thickness is 2.5mm.On drainage pipe 1, there is no hole, in mucky soil, can not draw water, can only transmit negative pressure.Every two drainage pipes, 1 use screw thread 7 connects, and screw thread 7 places all need to add rubber ring.Foot is draining pipe 2, and its internal diameter is 8cm, and external diameter is 8.5cm; The draining pipe 2 of foot also adopts screw thread 7 to be connected with the drainage pipe 1 on top.The making flow process of draining pipe 2 is: getting thickness is that 2.5mm internal diameter is that 8cm external diameter is the irony pipe of 8.5cm, punching on it, and hole diameter is 3mm.Overcoat nonwoven geotechnique weaves cotton cloth 3, geotechnique weave cotton cloth 3 skin wire gauze 5 wrap up tight, in case come off in work progress.Get single drainage pipe 1 and intercept top 20cm, this pipe is inserted into 10cm in the drainage pipe of 20cm, weld, now formed the special pipe that top has screw thread bottom to draw water.
Every drainage pipe 1 length is 2m, between every two drainage pipes 1, be connected to screwed connection 7, every top is male thread, bottom is interior screw thread, and ensure that any two drainage pipes can connect, in junction, every drainage pipe 1 top need add a rubbery loop 6, the effect of this rubbery loop 6 be ensure connect reliability, and ensure junction air tight, upper pull out process in screwed connection do not occur relaxing.Referring to Fig. 3, construction method is as follows:
(1) on mud, lay bed course at the scene, facilitate workman to construct, upper berth film again, when film requires to punch according to the spacing of drainage channel, make the drainage channel that the technical program will be used outside the venue, the waterproof large rigidity circular pipe 1 in this drainage channel top and bottom irony draining pipe 2 form.
(2) the waterproof large rigidity circular pipe 1 in top plays the effect of transmitting negative pressure and opposing horizontal shear, and it is segmentation, and every section is 2 meters, and each section is connected to screwed connection.
(3) waterproof top first paragraph large rigidity circular pipe 1 and bottom irony draining pipe 2 are connected to rear installation shoe 4, shoe is connected with bottom drainage pipe (2) close and firm, the vertical film place of punching that inserts is to the convenient height that connects next root pipeline, guarantee that drainage channel is vertical, then connecting pipe 1.Shoe has two effects: 1, and it is sharp, in lower insert row aquaporin, ratio is easier to insert in mud; 2 they and airtight firm connection of bottom drainage pipe (2), vacuumize and on ensure that mud can be from the bottom surface suction drain passage of pipe in pulling out process.
(4) every pipeline 1 junction will add a rubber pad 6, can prevent like this gas leakage of pipeline junction.
(5) continue again intubate, until reach the designing requirement degree of depth.
(6) connecting pipe and filter pipe afterwards, uses vacuum pump to add negative pressure and carries out draining.
Take such scheme both can ensure that the negative pressure that keeps larger in band drain was (because waterproof pipe 1 rigidity in top is larger, negative pressure value in pipeline does not decay with the degree of depth as conventional band drain in the process of draining, so so just solved the problem that negative pressure that conventional vacuum preloading drainage occurs in work progress declines rapidly with the increase of draining depth), can ensure that again the horizontal movement that mud produces in drainage procedure can not make drainage channel produce larger horizontal curvature distortion.
In the process of construction, first carry out the draining of the 2 meters of silt soils in bottom, substantially complete to fixed after the regular hour.At this moment, vacuum pump stops vacuumizing, unload being connected of longitudinal drainage pipeline and filter pipe, upwards 2 meters of tube drawings, unclamp screw thread and lay down that root drainage pipe 1 of extracting, again connect drainage pipe and filter pipe and carry out the discharging consolidation of a upper soil layer of next stage, then repeat above step to certain number of days, thereby complete the discharging consolidation work of soft foundation.
The problem of gushing on the mud likely causing when pulling out drainage channel on solving, putting radius on the top at the film place of punching is that 50cm thickness is the iron plate 15 of 1cm, and two groups of hydraulic jack 9,10 are placed on iron plate 15, two hydraulic jack 9,10 are distributed in the both sides of drainage channel.Then, get the iron plate 11 that the process of pulling out is used, 12, this iron plate thickness is 1cm, and its special character is embedded rubber ring 8, withstand this iron plate with jack, on jack, in the process of top, this iron plate meeting shape is at a certain angle, and now rubber ring 8 plays a role, rubber ring 8 can and drainage pipe form frictional force, utilize this frictional force realize drainage pipe on pull out.Note left and right two groups of jack need coordinate top, in case drainage channel tilt, then by jack complete drainage channel on pull out construction technology.
More than illustrate taking 2 meters as example, in practical application, can make 1 meter one section, or every segment length is selected as required in Practical Project.
Claims (3)
1. a vacuum preconsolidation drainage channel, comprise above top drainage pipe (1) and a bottom drainage pipe (2), it is characterized in that, between adjacent top drainage pipe (1) and between top drainage pipe (1) and bottom drainage pipe (2), be mutually tightly connected, on described bottom drainage pipe, offer the hole for drawing water.
2. vacuum preconsolidation drainage channel according to claim 1, is characterized in that, is fixedly connected with shoe (4) in the lower end of bottom drainage pipe (2), and the front end of described shoe (4) is sharp.
3. drainage channel according to claim 1, it is characterized in that, each described drainage pipe is iron pipe, there is nonwoven geotechnique to weave cotton cloth (3) in the outer cover of bottom drainage pipe (2), be enclosed with wire gauze (5) at the weave cotton cloth skin of (3) of nonwoven geotechnique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315969.3U CN203891004U (en) | 2014-06-12 | 2014-06-12 | Vacuum pre-pressing solidification draining channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315969.3U CN203891004U (en) | 2014-06-12 | 2014-06-12 | Vacuum pre-pressing solidification draining channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891004U true CN203891004U (en) | 2014-10-22 |
Family
ID=51717425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420315969.3U Expired - Lifetime CN203891004U (en) | 2014-06-12 | 2014-06-12 | Vacuum pre-pressing solidification draining channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005401A (en) * | 2014-06-12 | 2014-08-27 | 天津大学 | Vacuum preloading solidification drainage channel |
| CN105421331A (en) * | 2015-11-27 | 2016-03-23 | 淮海工学院 | Anti-bending drainage channel for soft soil drainage consolidation |
-
2014
- 2014-06-12 CN CN201420315969.3U patent/CN203891004U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005401A (en) * | 2014-06-12 | 2014-08-27 | 天津大学 | Vacuum preloading solidification drainage channel |
| CN105421331A (en) * | 2015-11-27 | 2016-03-23 | 淮海工学院 | Anti-bending drainage channel for soft soil drainage consolidation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |