CN102220756B - Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method - Google Patents
Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method Download PDFInfo
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- CN102220756B CN102220756B CN201110094942A CN201110094942A CN102220756B CN 102220756 B CN102220756 B CN 102220756B CN 201110094942 A CN201110094942 A CN 201110094942A CN 201110094942 A CN201110094942 A CN 201110094942A CN 102220756 B CN102220756 B CN 102220756B
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Abstract
The invention provides a long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method, which comprises the following main steps of: laying geotextile or woven cloth on the surface of a foundation to be processed; arranging shallow longitudinal short plastic drainage plates in a striking manner; arranging a transverse drainage system for the short plastic drainage plates; laying a vacuum sealing membrane; removing water and gas in the transverse drainage body for the short plastic drainage plates by using a vacuum pump; stripping away the vacuum sealing membrane; arranging deep longitudinal long plastic drainage plates in a striking manner; arranging a transverse drainage system for the long plastic drainage plates; laying a vacuum sealing membrane; and synchronously removing the water and gas in the transverse drainage systems for the long and the short plastic drainage plates by using the vacuum pump. By using the technology, an early-stage shallow preloading system and later-stage deep processing are organically combined, the time for solidification of foundation soil is shortened, the effect of reinforcing is enhanced, and a fast and efficient construction process is realized.
Description
Technical field
The present invention is a kind of foundation treatment technology, mainly is applicable to soft foundation, belongs to the geotechnical engineering field.
Background technology
Coastal large-scale Scale Sea Reclamation Project of China and littoral zone exploration project are flourish.Dalian, Tianjin, Jiangsu, Zhejiang and Guangdong etc. are coastal all at reclaiming land around sea on a large scale.Mostly these areas are the mud matter class weak soil of high-moisture, high-compressibility.The economic construction of China's high speed development is badly in need of wanting subgrade treatment technologies quick, efficient, energy-saving and environmental protection.In the eighties mid-term in last century, the technique of soft soil foundation treatment that grows up is through the development of nearly two more than ten years and constantly perfect.Develop into vacuum combined stack-load, the vacuum combined worker's methods such as water treatment, low position vacuum preloading, directly discharging type vacuum prepressing of covering from single vacuum method.Make it in practical applications, obtain success, and be widely used in the treatment of soft foundation engineering of Scale Sea Reclamation Project.
Find through practical application,, also have bigger limitation though conventional vacuum preloading law technology is a kind of effective soft foundation processing technology.For the ultra-soft foundation of just accomplishing hydraulic reclamation, consolidation process need consume a large amount of hydraulic reclamation layers of sand and fill out mountain skin soil as course with artificial shop, guarantees the running job of conventional vacuum preloading construction machinery.This just needs a large amount of electric energy of consumption and needs the long construction period.If carrying out superficial part (behind 4.0～6.0m) processing and the formation crust layer, carries out conventional vacuum preloading again and handles.This technology needs to solve a practice of construction difficult problem, but the shallow-layer band drain that early stage, construction processing was used goes out of use, and has caused the construction cost increase bigger, and the processing time is often longer, has satisfied not the needs of engineering practical application.Therefore, research and development subgrade a kind of fast, efficient, energy-saving and environmental protection is handled the active demand that new technology is the existing market development.The present invention makes full use of the material that stays when superficial part is handled simultaneously through improved transverse drainage system, shallow-layer is handled to handle with the deep layer precompressed organically combining, and has saved resource, has accelerated soil solidifying, has shifted to an earlier date the duration.Also improved the consolidation effect that deep soft foundation is handled simultaneously.
Summary of the invention
The present invention is in order to overcome a large amount of medium coarse sand bed courses that use in the conventional vacuum preloading, to consume ample resources; For improve shallow-layer handle discarded plastic draining board repeat utilize again; In order to quicken the fixed of the soil body.With realize fast, the purpose of efficient, energy-saving and environmental protection.
For realizing above-mentioned purpose; The scheme that patent of the present invention adopts provides the secondary vacuum prepressing ground foundation treatment method that a kind of length plastic draining board combines, and dark band drain was mainly handled and inserted to this technology by the shallow-layer of inserting short band drain two systems of deep level of processing realize.
This method may further comprise the steps: the foundation surface in that needs are handled is laid geotextiles or woven cloth; Set the vertically short plastic draining board of shallow-layer; Short plastic draining board transverse drainage system is set; Shop vacuum seal film; The water that utilizes vacuum pump to get rid of in the short plastic draining board transverse row water body is gentle; Take the vacuum seal film off; Set the vertically long plastic draining board of deep layer; Long plastic draining board transverse drainage system is set; Shop vacuum seal film; Utilize the water in the vacuum pump long and short band drain transverse drainage of the eliminating synchronously system gentle.Long and short band drain transverse drainage plate system is horizontally disposed transverse drainage plate, and its two ends are connected with main filter pipe, and main filter pipe is connected with vacuum pump.Step is further specialized:
⑴, the short band drain vacuum preloading of shallow-layer are handled.Through laying geotextiles or woven cloth, the artificial short plastic draining board that sets shallow-layer above that, construction depth 4～6m; To expose the draining wrench and directly sandwich transverse horizontal between the transverse row water body that two plastic draining boards of overlapping placement form and fixing; The transverse drainage end of body is connected to form the transverse drainage system with main filter pipe through connector again, is connected on the vacuum pump shop film sealing at last; Vacuumize and carry out the shallow-layer precompressed, form superficial part duricrust working lining.
⑵ the secondary vacuum precompressed that, depth layer combine is handled.Accomplish on the shallow-layer precompressed processing basis, setting the long plastic draining board of deep layer, setting end through the plastic draining board board-plugging device.Long plastic draining board wrench and transverse horizontal is also fixing between the transverse row water body of two plastic draining boards formation of overlapping placement, and transverse drainage end of body and main filter pipe are connected to form the transverse drainage system.Transverse drainage system with long and short plastic draining board is connected on the vacuum pump simultaneously at last, repaves the film sealing and vacuumizes.Carrying out the secondary vacuum precompressed soft foundation dark, that shallow-layer is synchronous handles.Utilize this technology fully in earlier stage the shallow-layer precompressed system and the deep level of processing in later stage to be organically combined, the foundation soil consolidation time improves consolidation effect, has realized the quick, efficient of work progress.
This invention is in improving the traditional vacuum precompressed, to insert short band drain with first shallow-layer to carry out after vacuum preloading finishes dealing with, and the slotting long plastic draining board of deep layer of the equipment of going up again carries out deep level of processing.After invention is handled through shallow-layer, when carrying out deep level of processing, can combine the short band drain of discarded shallow-layer organically to make up.Can save the consumption of medium coarse sand pad, minimizing vacuum chimney filter in the construction, reach the saving cost
30%, realize the target of energy-saving and environmental protection; The depth layer after-treatment technology that adopts the length plate to combine can be accelerated soil solidifying, and the reduction of erection time is near
40%The invention technology mainly is applicable to weak soil (ultra-soft soil) foundation engineering in the building projects such as harbour, iron fall, highway, water conservancy, airport.
Description of drawings
Fig. 1:Organigram of the present invention.
Among the figure: 1, vacuum extractor, 2, short band drain transverse row water body, 3, working cushion layer, 4, short band drain, 5, diaphragm seal, 6, long band drain transverse row water body, 7, long band drain.
The specific embodiment
, the short band drain preliminary treatment of shallow-layer
⑴, through machinery the field is flattened, planeness reaches 5 ‰.
⑵, laying one deck woven cloth; If handle ultra-soft foundation, then arrange the 200-300g geotextiles, utilize the plastic foam of filter membrane parcel to enclose low bank between fields as manual work.
⑶, carry out the longitudinal drainage body construction, calculate spacing, the degree of depth and the employed band drain specifications and models of confirming to set plastic draining board according to geological conditions.The plastic draining board protruded length is confirmed according to spacing, is generally 40～60cm, and wrench and parcel filter cloth require complete, concordant, and must not having into, the mud phenomenon occurs.
⑷ the setting of, transverse drainage system; Two overlapping placements of wide cut plastic draining board of adopting thickness 4.0 ± 0.2mm, width 100 ± 2mm, vertical water-flowing amount >=60cm3/s, transmission coefficient >=5 * 10-3cm/s, effective aperture (in O98) 80～100 μ m are as the transverse row water body; The transverse row water body is positioned over two row's longitudinal drainage plates; The longitudinal drainage wrench that both sides are exposed folds up between overlapping transverse row water body; Wrench is placed relatively, and the outside is fixed itself and transverse row water body with nailing, makes it to form an integral body at the external side parcel of transverse drainage filter membrane.In the both side ends of transverse row water body, link to each other with main filter pipe with connector, form a transverse drainage system.
⑸, laying diaphragm seal, the diaphragm seal quality adheres to specification, in factory's heat seal one-shot forming.With the diaphragm seal of prior compression moulding, divide two-layer laying, to consider that sedimentation causes the deformation requirements to film during the film of shop.The two layers of plastic film all should be imbedded and press backfill compacting in the unconcerned ditch.
⑹, peace jet pump, vacuum suction.Arrange jet vacuum pump by designing requirement, turn on pump carries out vacuum suction.Through 30 days, make top layer 4～6m sclerosis, can satisfy the construction machinery construction operation.
, deep layer band drain construction
⑴, the vacuum filter membrane that stays when removing the shallow-layer preliminary treatment;
⑵, carry out deep layer longitudinal drainage body construction, according to calculating the spacing that sets plastic draining board, the degree of depth and the employed band drain specifications and models of confirming.Be generally 40～60cm, wrench and parcel filter cloth require complete, concordant, and must not having into, the mud phenomenon occurs.
⑶ the setting of, transverse drainage system, long plastic draining board wrench and transverse horizontal is also fixing between the transverse row water body of two plastic draining boards formation of overlapping placement, and transverse drainage end of body and main filter pipe are connected to form the transverse drainage system.
⑷, laying diaphragm seal with the diaphragm seal of prior compression moulding, divide two-layer laying, will consider that sedimentation causes the deformation requirements to film during the film of shop.The two layers of plastic film all should be imbedded and press backfill compacting in the unconcerned ditch.
The secondary vacuum precompressed that
, depth layer combine is handled.
On the basis of the laying of accomplishing diaphragm seal.At last the horizontal connector of long and short plastic draining board is connected on the vacuum pump simultaneously and vacuumizes, carried out the synchronous vacuum preloading of long and short band drain about 90 days.
Claims (1)
1. the secondary vacuum prepressing ground foundation treatment method that the length plastic draining board combines is characterized in that may further comprise the steps: in the foundation surface laying geotextiles or the woven cloth of needs processing; Set the vertically short plastic draining board of shallow-layer; Short plastic draining board transverse drainage system is set; Shop vacuum seal film; The water that utilizes vacuum pump to get rid of in the short plastic draining board transverse row water body is gentle; Take the vacuum seal film off; Set the vertically long plastic draining board of deep layer; Long plastic draining board transverse drainage system is set; Shop vacuum seal film; Utilize the water in the vacuum pump long and short band drain transverse drainage of the eliminating synchronously system gentle; Long and short band drain transverse drainage plate system is horizontally disposed transverse drainage plate, and its two ends are connected with main filter pipe, and main filter pipe is connected with vacuum pump; Utilize vacuum pump to carry out deep level of processing and get rid of water in the transverse row water body when gentle, keep the transverse drainage system of the short band drain of shallow-layer, the water of getting rid of synchronously in the long and short band drain transverse row water body is gentle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110094942A CN102220756B (en) | 2011-04-15 | 2011-04-15 | Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110094942A CN102220756B (en) | 2011-04-15 | 2011-04-15 | Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method |
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| CN102220756A CN102220756A (en) | 2011-10-19 |
| CN102220756B true CN102220756B (en) | 2012-08-29 |
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| CN201110094942A Expired - Fee Related CN102220756B (en) | 2011-04-15 | 2011-04-15 | Long-short plastic drainage plates-combined secondary vacuum preloading foundation processing method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733371B (en) * | 2012-07-18 | 2015-06-24 | 温州大学 | Closed direct-sucking sectional vacuum preloading foundation treatment method |
| CN102900067B (en) * | 2012-10-31 | 2015-05-06 | 上海大学 | Processing method for reinforcing soft clay ground through vacuum preloading in combination with electro-osmosis method |
| CN103074884A (en) * | 2013-01-11 | 2013-05-01 | 温州大学 | Deep decompression anatonosis type vacuum preloading foundation treatment method |
| CN103074883B (en) * | 2013-01-11 | 2016-01-06 | 温州大学 | Active piling prepressing united consolidated subsoil method |
| CN105862712B (en) * | 2016-04-21 | 2018-09-07 | 中交第三航务工程局有限公司江苏分公司 | A kind of no sand vacuum pre-pressed soft soil foundation reinforcement means |
| CN112459043A (en) * | 2020-12-10 | 2021-03-09 | 中铁四局集团第一工程有限公司 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
| CN112878308B (en) * | 2021-01-18 | 2022-07-22 | 江苏鑫泰岩土科技有限公司 | High-load ultralow-position precipitation vacuum preloading method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858361A (en) * | 2006-06-09 | 2006-11-08 | 华南理工大学 | Quick reinforcing method and its reinforcing device super soft weak soil |
| CN101255688A (en) * | 2008-03-19 | 2008-09-03 | 中交水运规划设计院有限公司 | Directly ventilated type non-subcrust vacuum prepressing ground strengthening method |
| CN101906772A (en) * | 2010-07-26 | 2010-12-08 | 李燕青 | Fast consolidation method of blow-filled soft soil for land reclamation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100882835B1 (en) * | 2007-07-03 | 2009-02-10 | (주)지구환경전문가그룹 | Sump tank for separation of air and water in suction drain method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858361A (en) * | 2006-06-09 | 2006-11-08 | 华南理工大学 | Quick reinforcing method and its reinforcing device super soft weak soil |
| CN101255688A (en) * | 2008-03-19 | 2008-09-03 | 中交水运规划设计院有限公司 | Directly ventilated type non-subcrust vacuum prepressing ground strengthening method |
| CN101906772A (en) * | 2010-07-26 | 2010-12-08 | 李燕青 | Fast consolidation method of blow-filled soft soil for land reclamation |
Non-Patent Citations (1)
| Title |
|---|
| 任燚等.真空预压工艺处理超软基冬季施工.《中国港湾建设》.2010,(第6期),51-53. * |
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Effective date of registration: 20130305 Address after: 061001 No. 6 Jiefang West Road, canal zone, Hebei, Cangzhou Patentee after: Hebei Sheng Hong Engineering Survey Design Co., Ltd. Address before: No. 308 West Zhuang village, Huai Huairou District, Beijing, Beizhen Patentee before: China Hong Kong Foundation (Beijing) geotechnical Technology Co., Ltd. |
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