CN110206016A - A kind of soft foundation treatment process using vacuum preloading - Google Patents
A kind of soft foundation treatment process using vacuum preloading Download PDFInfo
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- CN110206016A CN110206016A CN201910519637.4A CN201910519637A CN110206016A CN 110206016 A CN110206016 A CN 110206016A CN 201910519637 A CN201910519637 A CN 201910519637A CN 110206016 A CN110206016 A CN 110206016A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000004568 cement Substances 0.000 claims description 18
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 11
- 239000004800 polyvinyl chloride Substances 0.000 claims description 11
- 239000004746 geotextile Substances 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 6
- 238000007596 consolidation process Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000002362 mulch Substances 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to capital construction technical fields, and disclose a kind of soft foundation treatment process using vacuum preloading, comprising the following steps: clear table, place processing；Set plastic draining board；Vacuum pre-press reinforcing piecemeal；Horizontal drainage system in ground is set；Vacuum sealing system；It vacuumizes.Vacuum guard system includes vacuum supervisor and vacuum manifold, drain bar is connected with butterfly connector after plate, butterfly connector connects vacuum manifold, vacuum manifold is the PE bellows of internal diameter 25mm, vacuum manifold and vacuum supervisor connect, vacuum supervisor is the PE bellows that internal diameter is 50mm, and vacuum supervisor connect with steam knockout drum, and steam knockout drum is connect by the pvc pipe of internal diameter 75mm with water-ring vacuum pump unit.The vacuum manifold connecting with butterfly connector is the PE bellows of internal diameter 25mm, is directly snapped connection by corrugation grooves and the formation of joint convex portion, and in conjunction with more closely, quality is small, more saving material, is easy truncation, and site operation is convenient.
Description
Technical field
The present invention relates to capital construction technical field, specially a kind of soft foundation treatment process using vacuum preloading.
Background technique
Treatment of soft foundation is called soft foundation processing, if ground is not firm enough before being building, to prevent under building groundwork
The heavy drawing crack accidents such as cause building unstable, need to handle subgrade, its sedimentation are made to become sufficiently solid, improve soft
The process of the degree of consolidation and stability of the ground extremely requirement of design.
Engineering method and its feature are often used in treatment of soft foundation:
1, compound foundation method: cement mixing method, powder-spray pile, broken stone pile etc.；Disadvantage: cost is higher
2, draining concretion method
(1) plastic draining board combined stack-load: long in time limit, effect is undesirable；
(2) plastic draining board combined vacuum precompressed: after 90 days durations, effect is easy to control, at low cost；
3, heavy-tamping method: disadvantage: quality is uncontrollable, easily forms " spring soil "；
4, without sand mat of subgrade vacuum preloading: novel engineering method, short time limit, low cost, cost are trueer than plastic draining board joint
One third is saved in empty precompressed, and effect is reliable；
5, compacting mud by explosion drainage.
During existing vacuum preloading construction, the drainpipe of butterfly connector connection is the PVC for using internal diameter as 25mm
Wire rubber pipe, smooth surface PVC wire rubber pipe defective tightness in conjunction with butterfly connector, every meter of PVC wire rubber pipe weigh 230 grams or more,
The waste of cost is caused, and needs steel wire reinforcement, during on-site construction, because containing steel wire, truncation is difficult.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of soft foundation treatment process using vacuum preloading, have and apply
Work is easy, short time limit, feature at low cost.
(2) technical solution
To achieve the above object, the invention provides the following technical scheme: a kind of soft foundation treatment process using vacuum preloading,
The following steps are included:
(1) clear table, place processing, place are pressed maximum absolute altitude+3.0 and are controlled, clear to the extra earthwork；
(2) plastic draining board is set, drain bar plate spacing is 0.8m, and arranged in squares, setting length is 20-25 meters；
(3) vacuum pre-press reinforcing piecemeal, using big pump integrated control system, unit containing water-ring vacuum pump and steam separation
Tank, by average every 8000-10000m2Left and right one steam knockout drum of arrangement；
(4) horizontal drainage system in ground is set, vacuum guard system is laid with, including vacuum is responsible for and vacuum manifold, after plate
Drain bar is connected two-by-two with butterfly connector, butterfly connector connects vacuum manifold, and vacuum manifold is the PE bellows of internal diameter 25mm,
Vacuum manifold and vacuum supervisor connect, and vacuum supervisor is the PE bellows that internal diameter is 50mm, and vacuum supervisor's segmentation is separated with steam
Tank connection, steam knockout drum are connect by the pvc pipe of internal diameter 75mm with water-ring vacuum pump unit；
(5) vacuum sealing system is laid with one layer of 200g/m after being laid with vacuum supervisor and vacuum manifold2Braiding geotechnique
Cloth and one layer of 250g/m2Non-woven geotextile, re-lay two layers of sealing film, vacuum boundary sets cement mixing pile envelope wall, if
Sealing press mold ditch is set, for sealing entire vacuum consolidation region；
(6) start to vacuumize, water storage on film, form water ballast(ing), water ballast need to build cofferdam, guarantee that water storage reaches certain depth
Degree, while guaranteeing that there are enough stability and safety in cofferdam during precompressed；
(7) after vacuum is fully loaded, place dead load squeeze time is -105 days 100 days, settlement monitoring is carried out during vacuumizing, even
Continue the 5 days rate of settling≤2mm/d, vacuum preloading can be terminated.
Preferably, plastic draining board being set in the step (2), method is set using bushing type, shoe is arranged in lower end,
The specific method is as follows:
S1: unwrapping wire determines drainage plate striking boundary line, and measurement is made plate position and marked；
S2: pile driver positioning is carried out according to plate position label is set；
S3: installation shoe；
S4: booting is set to designed elevation；
S5: casing is promoted；
S6: plastic draining board is cut；
S7: checking and data board position etc. sets situation；
S8: mobile pile driver to next plate position.
Preferably, every set water-ring vacuum pump unit contains the water-ring vacuum pump of two 55KW in step (4), and one to open one standby
With single-machine capacity 55kW, single machine evacuated pressure is not less than 95kPa.
Preferably, in step (5), vacuum boundary sets cement mixing pile envelope wall, and cement mixing pile diameter is 800mm,
The lap of splice is 200mm, and cement uses 42.5 ordinary portland cements, and every meter of cement mixing content is no less than 140kg, cement pulp-water ash
Compare 0.55-0.65.
Preferably, when step (6) builds water-retaining cofferdam, cofferdam body using small-sized machine mound and is compacted using element soil,
Gap is arranged in the top in cofferdam, and gap absolute altitude should be higher by 10cm or so than water storage face, and guarantee to rain the water discharge field having more
Outside.
Preferably, the steam knockout drum includes upper and lower two parts, and lower half portion is embedded in in reinforcing body；Top half
On three-layer sealed film, pass through flange after the completion of sealing plastic film mulch and connect with lower half portion, then use the pvc pipe of 75mm by its with
The connection of water-ring vacuum pump unit；Lower half portion has eight interfaces and vacuum supervisor to connect.
Preferably, the sealing film use two layers of polyvinyl chloride film, film thickness 0.14mm, thickness deviation ±
0.02mm。
Preferably, the plastic draining board uses FDPS-B plastic drain bar, and cross dimensions is 100mm × 4.0mm.
(3) beneficial effect
Compared with prior art, the present invention provides a kind for the treatment of of soft foundation vacuum preloading construction technique, beneficial effect is:
1, it is connected between drain bar by butterfly connector, it is easy for installation and firm.
2, the vacuum manifold connecting with butterfly connector is the PE bellows of internal diameter 25mm, directly relies on corrugation grooves and connector
Place's convex portion formation snaps connection, and combines more closely than smooth surface PVC wired hose.
3, using PE bellows, quality is small, compared with PVC wired hose, more saves material.
4, PE bellows is easy truncation, and site operation is convenient.
5, it is polluted less using PE bellows, it is more environmentally-friendly.
Detailed description of the invention
Fig. 1 is treatment of soft foundation flow diagram of the invention；
Fig. 2 is the connection schematic diagram of butterfly connector of the present invention and drain bar, vacuum manifold；
Fig. 3 is the operation schematic diagram of steam knockout drum of the present invention；
In figure, 1- vacuum supervisor, 2- vacuum manifold, 3- wing plate, 4- water service pipe, 5- drain bar, 6- steam knockout drum, 7- water
Circular vacuum pump machine, 8- seal film.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-3, a kind of soft foundation treatment process using vacuum preloading, comprising the following steps:
(1) clear table, place processing, place are pressed maximum absolute altitude+3.0 and are controlled, clear to the extra earthwork；
(2) plastic draining board is set, drain bar plate spacing is 0.8m, and arranged in squares, setting length is 20-25 meters；
It sets method and method is set using bushing type, shoe is arranged in lower end, and the specific method is as follows:
S1: unwrapping wire determines drainage plate striking boundary line, and measurement is made plate position and marked；
S2: pile driver positioning is carried out according to plate position label is set；
S3: installation shoe；
S4: booting is set to designed elevation；
S5: casing is promoted；
S6: plastic draining board is cut；
S7: checking and data board position etc. sets situation；
S8: mobile pile driver to next plate position.
Wherein, plastic draining board uses FDPS-B plastic drain bar, and cross dimensions is 100mm × 4.0mm.Design parameter
Such as table 1:
Table 1FDPS-B plastic drain bar specification and technical requirements
(3) vacuum pre-press reinforcing piecemeal, using big pump integrated control system, unit containing water-ring vacuum pump and steam separation
Tank, by average every 8000-10000m2Left and right one steam knockout drum of arrangement；
(4) horizontal drainage system in ground is set, vacuum guard system is laid with, including vacuum is responsible for and vacuum manifold, after plate
Drain bar is connected two-by-two with butterfly connector, butterfly connector connects vacuum manifold, and vacuum manifold is the PE bellows of internal diameter 25mm,
Vacuum manifold and vacuum supervisor connect, and vacuum supervisor is the PE bellows that internal diameter is 50mm, and vacuum supervisor's segmentation is separated with steam
Tank connection, steam knockout drum are connect by the pvc pipe of internal diameter 75mm with water-ring vacuum pump unit, every set water-ring vacuum pump machine
Group contains the water-ring vacuum pump of two 55KW, and one opens spare, a single-machine capacity 55kW, and single machine evacuated pressure is not less than 95kPa.
(5) vacuum sealing system is laid with one layer of 200g/m after being laid with vacuum supervisor and vacuum manifold2Braiding geotechnique
Cloth and one layer of 250g/m2Non-woven geotextile, re-lay two layers polyvinyl chloride sealing film, sealing film is thin using three strata vinyl chloride
Film, film thickness 0.14mm, thickness deviation ± 0.02mm；Vacuum boundary sets cement mixing pile envelope wall, setting sealing pressure
Film ditch, for sealing entire vacuum consolidation region；Wherein, cement mixing pile diameter is 800mm, lap of splice 200mm, cement
Using 42.5 ordinary portland cements, every meter of cement mixing content is no less than 140kg, cement slurry ratio of mud 0.55-0.65.
Wherein, non-woven geotextile material requirements such as table 2, braided geotextile material requirements such as table 3, sealing membrane material require such as
Table 4
2 non-woven geotextile material requirements of table
| Serial number | Project | Unit | Index |
| 1 | Through to ultimate strength >= | KN/m | 8.0 |
| 2 | Tie up to ultimate strength >= | KN/m | 8.0 |
| 3 | Elongation at break (vertically and horizontally)≤ | % | 25 |
| 4 | CBR bursting strength >= | KN | 1.2 |
| 5 | Effective aperture O98 | mm | 0.07-0.2 |
| 6 | Unit mass area | g/m2 | 250 |
3 braided geotextile material requirements of table
| Project | Unit | Index |
| Unit mass | g/m2 | 200 (± 10%) |
| Broadwise ultimate strength | Kn/m | ≥40 |
| Radial fragmentation strength | Kn/m | ≥28 |
| Broadwise ultimate strength percentage | % | ≥28 |
| It is trapezoidal to tear strong (longitudinal direction) | Kn | ≥0.5 |
| Bursting strength | Kn | ≥3.2 |
| Vertical permeability coefficient | cm/s | 10-1-10-4 |
| Effective aperture O98 | mm | 0.08-0.5 |
Table 4 seals membrane material requirement
(6) start to vacuumize, water storage on film, form water ballast(ing), water ballast need to build cofferdam, guarantee that water storage reaches certain depth
Degree, while guaranteeing that there are enough stability and safety in cofferdam during precompressed；Cofferdam body is using element soil, using small-sized machine heap
Soil is simultaneously compacted, and gap is arranged at the top in cofferdam, and gap absolute altitude should be higher by 10cm or so than water storage face, and guaranteeing to rain has more
Water discharge it is over-the-counter.
(7) after vacuum is fully loaded, place dead load squeeze time is -105 days 100 days, settlement monitoring is carried out during vacuumizing, even
Continue the 5 days rate of settling≤2mm/d, vacuum preloading can be terminated.
It should be pointed out that when ground horizontal drainage system is arranged vacuum guard system need to be laid with, vacuum guard system includes
Vacuum supervisor 1 and vacuum manifold 2, it has been disclosed that patent (notification number: CN 208395803U) discloses a kind of drain bar butterfly and connects
Head, including wing plate 3 and water service pipe 4 are connected drain bar 5 with the wing plate 3 of butterfly connector after being inserted into drain bar 5 two-by-two, and butterfly connects
The water service pipe 4 of head connects vacuum manifold 2, and vacuum manifold 2 is the PE bellows of internal diameter 25mm, and vacuum manifold 2 and vacuum supervisor 1 connect
It connects, vacuum supervisor 1 is the PE bellows that internal diameter is 50mm, and 1 segmentation of vacuum supervisor is connect with steam knockout drum 6, steam knockout drum 6
It is connect by the pvc pipe of internal diameter 75mm with water-ring vacuum pump unit 7, every set water-ring vacuum pump unit 7 contains two 55KW's
Water-ring vacuum pump, one opens spare, a single-machine capacity 55kW, and single machine evacuated pressure is not less than 95kPa.
Wherein, steam knockout drum includes upper and lower two parts, and lower half portion is embedded in in reinforcing body；Top half is located at three
On layer sealing film 8, sealing film is connect with lower half portion after spread by flange, then uses the pvc pipe of 75mm by itself and liquid-ring type
The connection of vacuum pump assembly；Lower half portion has eight interfaces and vacuum supervisor to connect.Row is inhaled into gas to the water in soil mass consolidation
Water plate 5, using vacuum manifold 2, vacuum supervisor 1, into steam knockout drum 6, gas is from 6 top half of steam knockout drum by water ring
Formula vacuum pump 7 siphons away, and water is discharged by the water pump of 6 bottom of steam knockout drum, and aqueous vapor separation discharge improves the efficiency vacuumized.
The above-mentioned soft foundation treatment process using vacuum preloading is connected between drain bar, the peace of drain bar by butterfly connector
Dress is convenient and firm；The vacuum manifold being connect with butterfly connector be internal diameter 25mm PE bellows, directly by corrugation grooves with
Convex portion formation in joint snaps connection, and combines more closely than smooth surface PVC wired hose；Using PE bellows, quality is small,
Compared with PVC wired hose, material is more saved；PE bellows ratio PVC wired hose is easier to be truncated, and site operation is convenient.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of soft foundation treatment process using vacuum preloading, it is characterised in that: the following steps are included:
(1) clear table, place processing, place are pressed maximum absolute altitude+3.0 and are controlled, clear to the extra earthwork；
(2) plastic draining board is set, drain bar plate spacing is 0.8m, and arranged in squares, setting length is 20-25 meters；
(3) vacuum pre-press reinforcing piecemeal, using big pump integrated control system, unit containing water-ring vacuum pump and steam knockout drum,
By averagely every 8000-10000m2Left and right one steam knockout drum of arrangement；
(4) horizontal drainage system in ground is set, is laid with vacuum guard system, including vacuum supervisor and vacuum manifold, uses butterfly after plate
Shape connector connects drain bar two-by-two, and butterfly connector connects vacuum manifold, and vacuum manifold is the PE bellows of internal diameter 25mm, vacuum
Branch pipe and vacuum supervisor connect, and vacuum supervisor is the PE bellows that internal diameter is 50mm, and vacuum supervisor segmentation connects with steam knockout drum
It connects, steam knockout drum is connect by the pvc pipe of internal diameter 75mm with water-ring vacuum pump unit；
(5) vacuum sealing system is laid with one layer of 200g/m after being laid with vacuum supervisor and vacuum manifold2Braided geotextile and one
Layer 250g/m2Non-woven geotextile, re-lay two layers of sealing film, vacuum boundary sets cement mixing pile envelope wall, setting sealing
Press mold ditch, for sealing entire vacuum consolidation region；
(6) starting to vacuumize, water storage on film, form water ballast(ing), water ballast need to build cofferdam, guarantee that water storage reaches certain depth,
Guarantee that there are enough stability and safety in cofferdam during precompressed simultaneously；
(7) after vacuum is fully loaded, place dead load squeeze time is -105 days 100 days, progress settlement monitoring during vacuumizing, continuous 5
Its rate of settling≤2mm/d, can terminate vacuum preloading.
2. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: the step
(2) plastic draining board is set in, method is set using bushing type, shoe is arranged in lower end, and the specific method is as follows:
S1: unwrapping wire determines drainage plate striking boundary line, and measurement is made plate position and marked；
S2: pile driver positioning is carried out according to plate position label is set；
S3: installation shoe；
S4: booting is set to designed elevation；
S5: casing is promoted；
S6: plastic draining board is cut；
S7: checking and data board position etc. sets situation；
S8: mobile pile driver to next plate position.
3. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: in step (4)
Every set water-ring vacuum pump unit contains the water-ring vacuum pump of two 55KW, and one opens spare, a single-machine capacity 55kW, and single machine is taken out true
Pneumatics power is not less than 95kPa.
4. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: in step (5),
Vacuum boundary sets cement mixing pile envelope wall, and cement mixing pile diameter is 800mm, lap of splice 200mm, cement use
42.5 ordinary portland cements, every meter of cement mixing content are no less than 140kg, cement slurry ratio of mud 0.55-0.65.
5. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: step (6) is repaired
When building water-retaining cofferdam, cofferdam body using small-sized machine mound and is compacted using element soil, and gap is arranged at the top in cofferdam, overflows
Mouth of a river absolute altitude should be higher by 10cm or so than water storage face, guarantee to rain the water discharge having more outside the venue.
6. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: the steam point
It include upper and lower two parts from tank, lower half portion is embedded in in reinforcing body；Top half is located on three-layer sealed film, seals plastic film mulch
It is connect by flange with lower half portion, is then connect it with water-ring vacuum pump unit with the pvc pipe of 75mm after the completion；Lower half
Part has eight interfaces and vacuum supervisor to connect.
7. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: the sealing film
Using two layers of polyvinyl chloride film, film thickness 0.14mm, thickness deviation ± 0.02mm.
8. a kind of soft foundation treatment process using vacuum preloading according to claim 1, it is characterised in that: the plastic row
Water plate uses FDPS-B plastic drain bar, and cross dimensions is 100mm × 4.0mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700232A (en) * | 2019-10-15 | 2020-01-17 | 中瀛港湾（厦门）建设工程有限公司 | Construction method for soft foundation treatment |
| CN114457784A (en) * | 2022-03-18 | 2022-05-10 | 汕尾市广投建设工程有限公司 | Prepressing structure of coastal sludge geological soft soil foundation and construction process thereof |
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| CN107419717A (en) * | 2017-06-19 | 2017-12-01 | 龙元建设集团股份有限公司 | It is pressurized compound vacuum pre-pressed soft soil foundation processing constructing device and technique |
| CN207659955U (en) * | 2017-11-28 | 2018-07-27 | 中交天津港航勘察设计研究院有限公司 | A kind of novel straight-line vacuum prepressing device suitable for treatment of soft foundation |
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| CN110700232A (en) * | 2019-10-15 | 2020-01-17 | 中瀛港湾（厦门）建设工程有限公司 | Construction method for soft foundation treatment |
| CN114457784A (en) * | 2022-03-18 | 2022-05-10 | 汕尾市广投建设工程有限公司 | Prepressing structure of coastal sludge geological soft soil foundation and construction process thereof |
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Application publication date: 20190906 |