CN104631427A - Surface processing method of plastic drainage plate in deep pressurization system - Google Patents
Surface processing method of plastic drainage plate in deep pressurization system Download PDFInfo
- Publication number
- CN104631427A CN104631427A CN201510002695.1A CN201510002695A CN104631427A CN 104631427 A CN104631427 A CN 104631427A CN 201510002695 A CN201510002695 A CN 201510002695A CN 104631427 A CN104631427 A CN 104631427A
- Authority
- CN
- China
- Prior art keywords
- pressurization system
- draining board
- plastic draining
- soil body
- bilateral
- Prior art date
- 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.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 48
- 239000004033 plastic Substances 0.000 title claims abstract description 48
- 238000003672 processing method Methods 0.000 title abstract 2
- 239000002689 soil Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000002146 bilateral effect Effects 0.000 claims description 34
- 239000010410 layer Substances 0.000 claims description 18
- 239000002344 surface layer Substances 0.000 claims description 10
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims 1
- 229920006395 saturated elastomer Polymers 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000007596 consolidation process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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 invention relates to a surface processing method of a plastic drainage plate in a deep pressurization system. The method includes the steps of conducting connection processing, burying processing and soil heaping and sealing processing at the top end of the plastic drainage plate in the deep pressurization system. The top end of the plastic drainage plate in the pressurization system is connected into a two-way hand-shaped connector, connected with a vertical pressurization pipe through a special two-way conversion connector with a flange connector and connected into a transverse pressurization branch pipe, the connected plastic drainage plate is buried into the soil body in an inverted-S shape along a groove formed by a pile driver, and soil heaping and sealing are conducted. In this way, the soil body at the point is gradually compressed under the vacuum pressure, the airtightness of the point can be guaranteed, the pressurization gas is prevented from overflowing out of the soil body surface to affect the vacuum load, and thus the pressurization system is made to be an independent pressurization system in the soil body.
Description
Technical field
The present invention relates to the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system, be applicable in supercharged vacuum precompressed soft soil foundation, especially deep layer supercharged vacuum preloading.
Background technology
From last century, the eighties China starts the method proposing and apply vacuum preloading soft soil foundation, by continuous improvement and bring new ideas in engineering practice, the perfect further theory and technology of vacuum method soft soil foundation, makes it in Practical Project, have more operability and feasibility.Successively once proposed directly discharging type vacuum prepressing technology, and without sand cushion technique of soft soil foundation treatment, length plate combined vacuum prestressing technology, preloading combined vacuum prestressing technology, double-deck chimney filter technique of soft soil foundation treatment and supercharged vacuum prestressing technology etc., be all applied in Practical Project and achieve good consolidation effect.At present, vacuum method has become a kind of foundation treatment technology of reclaiming land from the sea in coastal area reclaimed ground process formed and the most generally using.
Supercharged vacuum prestressing technology is a kind of foundation treatment technology mentioned in patent No. ZL200810156787, and the method supercharging chimney filter, as vertical Pressure channel, achieves successful Application in Practical Project.But this supercharging chimney filter does not have supporting pile driver to set, can only by manually setting, so can only carry out pressurized treatment to the shallow-layer soil body, shallow depth is generally at about 5m.When needs do deep layer pressurized treatment, need to replace supercharging chimney filter to be used as Pressure channel with plastic draining board, the plastic draining board like this for supercharging just can squeeze into predeterminated position with the pile driver of the same race of the plastic draining board for vacuumizing.But be no matter with supercharging chimney filter or with plastic draining board as vertical Pressure channel, its top is all needed to imbed soil body 50cm, namely need the sealant of at least 50cm to ensure that supercharging can as independently sealing system, pressurization gas is transmitted in the soil body and is unlikely to overflow soil body surface and affects vacuum load under film, and cut off and being communicated with of pumped vacuum systems, this just needs to seal the top layer of vertical Pressure channel to do certain process.
The supercharging technology mentioned in patent No. ZL200810156787 does not have method for treating surface layer and the length of embedment of the vertical Pressure channel of concrete regulation, in Practical Project be all generally by the top of supercharging chimney filter under soil body surface, when with plastic draining board as vertical Pressure channel time, predeterminated position is set in the lump often with the vertical drainage plate in pumped vacuum systems, hand-type joint and supercharging appendix is entered again at the heading joint for the plastic draining board in pressurization system, afterwards the vertical drainage plate bending 90-120 degree exposing soil body surface is attached to soil body surface, finally on the plastic draining board of soil body surface, sealing clay carries out encapsulation process.Because plastic draining board is all squeeze into pile driver, set the rear soil body and can there is a cavity, although the soil body can automatic shrinkage cavity, but still can there is certain depression on top layer, in addition with supercharging with the use of sealed vacuum preloading generally do not need sand cushion, be inhaled into depressed area under negative pressure for preventing diaphragm seal and also need to carry out the process of envelope hole.Certain sealing function can be played although do like this, but still existing problems.Supercharging is generally opened in the later stage of vacuum preloading, be made in like this and early stage there is certain sealing, but along with the continuity of vacuum load, the soil body is consolidation gradually, because plastic draining board itself has certain rigidity, certain effect of stress can be had to the sealant above it, cause the weak soil layer of seal area to produce cracking under vacuum load, make seal failure.Will cause like this later stage booster-type pressurization gas major part can be trapped in soil body surface and and diaphragm seal between, not only can not get effective pressurization gas in the soil body, under-membrance vacuum degree also can be made to reduce, affect consolidation effect.
Main purpose of the present invention is to overcome above defect, special process is carried out to the top of vertical Pressure channel, namely when carrying out deep layer supercharging as Pressure channel to the soil body with plastic draining board, first should control the height that plastic draining board exposes soil body surface, preferably 5-8cm, such setting is for ease of the access of hand-type joint and fixing, then special bilateral crossover sub is accessed, length is too short to be difficult to access very well and to fix, long then both meaningless increase cost, be unfavorable for fixed effect again, access one section of vertical pressure inlet again, thereafter the groove that the plastic draining board connected is formed along pile driver is longitudinally imbedded the soil body in the type of falling S, top layer uplift of soil can be caused when considering supercharging, and cut-out is communicated with pumped vacuum systems, compression distance is preferably 30-40cm, and carry out mound sealing along hole, the stacking height of the sealing soil body should be closely knit a little more than soil body surface 5-8cm, to ensure the directed drainage effect of supercharging.Like this during vacuum preloading, it is closely knit that the soil body at this some place more can become under the effect of vacuum load, thus ensure the isolated of positive pressure passageway and soil body surface, makes pressurization system become an autonomous system of inside soil body.
The implementation step of this programme comprises following content: in pressurization system, plastic draining board top access bilateral hand-type joint and one end are with the special bilateral crossover sub of flange socket, insert vertical pressure inlet, longitudinally become the type of falling S to insert the soil body along original groove the plastic draining board connected, mound seals.
Vertical pressure inlet in pressurization system adopts diameter to be the PVC hose of 10mm.And be connected with the plastic draining board in pressurization system with special bilateral crossover sub, horizontal pressure inlet also adopts the PVC hose of 10mm, and is connected by tee junction.
Accompanying drawing explanation
The top connection diagram of plastic draining board in Fig. 1 pressurization system;
In Fig. 2 pressurization system, plastic draining board imbeds shape and mound sealing schematic diagram;
Fig. 3 special bilateral crossover sub sectional drawing;
Fig. 4 hand-type joint construction figure.
In figure: 1, bilateral hand-type joint; 2, special bilateral crossover sub; 3, plastic draining board; 4, vertical pressure inlet; 5, the outer wall of special bilateral crossover sub; 6, the inside card line of special bilateral crossover sub; 7, flange socket; 8, the inwall of special bilateral crossover sub; 9, the surface in mudding face; 10, the surface of pending ground; 11, the groove that formed of pile driver; 12, the external card line of bilateral hand-type joint; 13, the interior case of bilateral hand-type joint.
Detailed description of the invention
In the specific implementation, first bilateral hand-type joint 1 is inserted special bilateral crossover sub 2, the external card line 12 of bilateral hand-type joint is engaged mutually with the inside card line 6 of special bilateral crossover sub, vertical pressure inlet 4 is accessed the flange socket 7 in special bilateral crossover sub, then cutting is carried out to the plastic draining board 3 in pressurization system, the height exposing soil body surface is made to be 5-8cm, after cutting, plastic draining board to be inserted in bilateral hand-type joint in case 13, in bilateral hand-type joint, rifle nail is squeezed into fixed plastics band drain and bilateral hand-type joint in the surface of case again, the intersection pinching bilateral hand-type joint and plastic draining board afterwards with hand becomes the type of falling S to be pressed into soil body 30-40cm downwards along the tangent line of channel section, finally sealed the plastic draining board top mound pressed is closely knit, sealing highly should higher than soil body surface 5-8cm, and seal interface 9 should be level and smooth, the gradient is more slow, there is not hard sharp hard object, this completes burying underground of plastic draining board in a pressurization system.
Claims (7)
1. the method for treating surface layer of plastic draining board in deep layer pressurization system, is characterized in that wanting the plastic draining board in pressurization system to carry out top process, imbeds process and mound encapsulation process.
2. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, is characterized in that the length exposing soil body surface for the plastic draining board in pressurization system should be 5-8cm.
3. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, it is characterized in that the top of the plastic draining board in pressurization system to be connected with bilateral hand-type joint and to access vertical pressure inlet with special bilateral crossover sub, the structure of described special bilateral crossover sub is, one end is engaged with the round table-like mouth of pipe of bilateral hand-type fitting end, and the other end is engaged with vertical pressure inlet with flange socket.
4. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, it is characterized in that the groove that the plastic draining board in pressurization system will be formed when pile driver re-packs imbeds the soil body in the type of falling S, the degree of depth is 30-40cm.
5. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, it is characterized in that after vertical Pressure channel is pressed into the soil body, surface saturated muck carry out envelope hole sealing and closely knit, the sealing soil body banked up should exceed soil body surface 5-8cm, and mound surface smoothing, gentle gradient.
6. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, is characterized in that, when adopting supercharging chimney filter manually to set, during as do not reached supercharging chimney filter top apart from soil body top layer 50cm, also needing to use the method process.
7. the method for treating surface layer of plastic draining board in a kind of deep layer pressurization system according to claim 1, first bilateral hand-type joint is inserted special bilateral crossover sub, the external card line of bilateral hand-type joint is engaged mutually with the inside card line of special bilateral crossover sub, vertical pressure inlet is accessed the flange socket in special bilateral crossover sub, then cutting is carried out to the plastic draining board in pressurization system, the height exposing soil body surface is made to be 5-8cm, after cutting, plastic draining board to be inserted in bilateral hand-type joint in case, in bilateral hand-type joint, rifle nail is squeezed into fixed plastics band drain and bilateral hand-type joint in the surface of case again, the intersection pinching bilateral hand-type joint and plastic draining board afterwards with hand becomes the type of falling S to be pressed into soil body 30-40cm downwards along the tangent line of channel section, finally sealed the plastic draining board top mound pressed is closely knit, sealing highly should higher than soil body surface 5-8cm, and seal interface should be level and smooth, the gradient is more slow, there is not hard sharp hard object, this completes burying underground of plastic draining board in a pressurization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002695.1A CN104631427B (en) | 2015-01-05 | 2015-01-05 | Surface processing method of plastic drainage plate in deep pressurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002695.1A CN104631427B (en) | 2015-01-05 | 2015-01-05 | Surface processing method of plastic drainage plate in deep pressurization system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104631427A true CN104631427A (en) | 2015-05-20 |
| CN104631427B CN104631427B (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510002695.1A Active CN104631427B (en) | 2015-01-05 | 2015-01-05 | Surface processing method of plastic drainage plate in deep pressurization system |
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| Country | Link |
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| CN (1) | CN104631427B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088791A (en) * | 2019-12-10 | 2020-05-01 | 浙江工业大学 | Hand-shaped joint connecting structure for zipper-type soil engineering pipe bag and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3785567B2 (en) * | 2001-03-13 | 2006-06-14 | 太平商工株式会社 | Consolidation promotion method for landfill soft viscous soil layer |
| CN2866601Y (en) * | 2006-01-10 | 2007-02-07 | 金亚伟 | Drainage plate and vacuum pipe connecting connector for vacuum prepressing |
| CN102116022A (en) * | 2011-01-13 | 2011-07-06 | 中港基业（北京）岩土技术有限公司 | Method for treating soft foundation through overpressure vacuum densification |
| CN103866759A (en) * | 2014-02-18 | 2014-06-18 | 上海大学 | Method for reinforcing soft soil foundations by combining booster-type vacuum pre-compression and electro-osmosis |
| CN103966998A (en) * | 2014-04-30 | 2014-08-06 | 中交天津港湾工程研究院有限公司 | Reinforcement technology and device for deep soft soil foundation comprising sandy soil interbed |
-
2015
- 2015-01-05 CN CN201510002695.1A patent/CN104631427B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3785567B2 (en) * | 2001-03-13 | 2006-06-14 | 太平商工株式会社 | Consolidation promotion method for landfill soft viscous soil layer |
| CN2866601Y (en) * | 2006-01-10 | 2007-02-07 | 金亚伟 | Drainage plate and vacuum pipe connecting connector for vacuum prepressing |
| CN102116022A (en) * | 2011-01-13 | 2011-07-06 | 中港基业（北京）岩土技术有限公司 | Method for treating soft foundation through overpressure vacuum densification |
| CN103866759A (en) * | 2014-02-18 | 2014-06-18 | 上海大学 | Method for reinforcing soft soil foundations by combining booster-type vacuum pre-compression and electro-osmosis |
| CN103966998A (en) * | 2014-04-30 | 2014-08-06 | 中交天津港湾工程研究院有限公司 | Reinforcement technology and device for deep soft soil foundation comprising sandy soil interbed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088791A (en) * | 2019-12-10 | 2020-05-01 | 浙江工业大学 | Hand-shaped joint connecting structure for zipper-type soil engineering pipe bag and using method thereof |
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| Publication number | Publication date |
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| CN104631427B (en) | 2017-05-24 |
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| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: WENZHOU UNIVERSITY Free format text: FORMER OWNER: WANG JUN Effective date: 20150610 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150610 Address after: 325035 Zhejiang province Chashan Wenzhou Higher Education Park Applicant after: Wenzhou University Address before: 325035 Zhejiang province Chashan Wenzhou Higher Education Park Architectural Engineering College of Wenzhou University Applicant before: Wang Jun |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 38 East Road, Ouhai Economic Development Zone, Zhejiang, Wenzhou (Wenzhou University Science Park, No. 325000) Applicant after: Wenzhou University Address before: 325035 Zhejiang province Wenzhou Chashan Higher Education Park Applicant before: Wenzhou University |
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