CN105603963A - Flat belt lateral swelling combined vacuum pre-pressing foundation processing device and method - Google Patents
Flat belt lateral swelling combined vacuum pre-pressing foundation processing device and method Download PDFInfo
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- CN105603963A CN105603963A CN201610111261.XA CN201610111261A CN105603963A CN 105603963 A CN105603963 A CN 105603963A CN 201610111261 A CN201610111261 A CN 201610111261A CN 105603963 A CN105603963 A CN 105603963A
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- bandlet
- plastics
- sand bedding
- film device
- injection pipe
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Classifications
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- 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
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- 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
Abstract
The invention discloses a flat belt lateral swelling combined vacuum pre-pressing foundation processing device. A sand cushion layer is arranged above a construction region. A sealing film is arranged on the upper surface of the sand cushion layer. A plastic water drainage plate and a plastic flat belt are arranged in the construction region in a driving mode. A filtering pipe is embedded in the sand cushion layer. The plastic water drainage plate and the filtering pipe are connected. The filtering pipe is connected with a film outlet device. The film outlet device is connected with a jet pump through a first connecting pipe. An air injection pipe is embedded in the sand cushion layer. The plastic flat belt is connected with the air injection pipe which is connected with the film outlet device. The film outlet device is connected with an air compressor through a second connecting pipe. Film pressing ditches are formed around the construction region. A clay sealing wall is arranged below the film pressing ditches, the four edges of the sealing film are laid in the film pressing ditches and pressed compact with clay. Construction starts, the jet pump and the air compressor are started, vacuumizing is performed on the construction region, the plastic flat belt is filled with gas so that the plastic flat belt can laterally swell and have a squeezing effect on the peripheral edges. The technical scheme is applied to reinforcing of a soft soil foundation, the flat belt laterally swells and can generate fractures and accelerate soil solidification, additional loads in the horizontal direction are applied, the bearing force of the reinforced foundation is further improved and can reach 80 kPa or above.
Description
Technical field
The invention belongs to field of civil engineering method for processing foundation, concrete is the processing of the swollen combined vacuum precompressed of bandlet side groundApparatus and method.
Background technology
Vacuum preloading is a kind of soft soil foundation reinforcing method of extensive use, especially aspect the deep weak clay of processing, is havingUnique advantage. Vacuum method is proposed by the WKjellman of geological institute of Sweden imperial family the earliest, introduction of authors fiveOrganize site test results, and proposed the theoretical explanation of vacuum preloading. After this, vacuum preloading research work slower development.China is in 50～sixties of 20th century, and commensurate has not carried out respectively exploratory work, but in theoretical and engineering practice sideFace does not all obtain larger breakthrough. From 1980, bay, Tianjin engineering (was handed over by one Hang Ju scientific research institution of Ministry of Communications in existingCo., Ltd of research institute) carry out large-area field trial, and combine with University Of Tianjin and carried out laboratory test and theoryResearch. Tentatively understood fully the consolidation mechanism of vacuum preloading, and worked out suitable vacuum extractor (jet pump) andCover the critical processes such as diaphragm seal, and obtained national inventing patent. After this in order to obtain higher foundation bearing capacity, hand overVacuum combined stack-load method for processing foundation has been invented on the basis of vacuum method by logical Bu Yihangju scientific research institution. Send out in recent yearsBright supercharged vacuum precompressed and air pressure splitting vacuum preloading are because existence is difficult to control the gases at high pressure vacuum etc. that extends influenceA difficult problem, consolidation effect fails to obtain larger raising.
A large amount of vacuum preloading engineerings show, vacuum preloading is a kind of efficient and rational soft-soil foundation treatment method, but existTwo problems. The firstth, due to the about 80kPa of the restriction vacuum pre-press reinforcing groundwork characteristic load bearing capacity left and right of atmospheric pressure,Can not further improve; Though vacuum combined stack-load method can further improve foundation bearing capacity, its heap material containing obtains and fortuneDefeated restriction, expense is higher, for ensureing that the soil body does not destroy, needs controlled loading speed when preloading simultaneously, affects workPhase. The secondth, slower for the Clay Consolidation speed that infiltration coefficient is less, in pumpdown time that need to be longer, the electricity charge etc. takeWith higher, affect the duration.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the swollen combined vacuum precompressed of bandlet side ground treating apparatus is providedAnd method, being applied to reinforced soft soil ground, bandlet side is swollen produces crack quickening soil solidifying, and the level that applies is to additional lotusCarry and further improve the foundation bearing capacity after reinforcing.
Technical purpose of the present invention is achieved by following technical proposals:
Bandlet side is swollen combined vacuum precompressed ground treating apparatus arranges sand bedding course, in construction area above construction areaSet plastic draining board and plastics bandlet, in construction area, bury monitoring instrument underground; In sand bedding course, bury chimney filter underground, and willPlastic draining board is connected with chimney filter, chimney filter with go out film device and be connected; Go out film device and be connected with jet pump by the first tube connector,Form from plastic draining board-chimney filter-go out pumping channel of film device-the first tube connector-jet pump; In sand bedding course, buryIf air injection pipe, and plastics bandlet is connected with air injection pipe, air injection pipe with go out film device and be connected, go out film device and connect by secondTake over and be connected with air compressor, formation is flat from air compressor-the second tube connector-go out film device-air injection pipe-plasticsThe loading line of band; Upper surface at sand bedding course arranges diaphragm seal, in the surrounding of construction area, press mold ditch is set, at press moldThe below of ditch arranges wax wall, and diaphragm seal four limits spread in press mold ditch and use clay compacting.
In technique scheme, plastic draining board is arranged according to square; Plastics bandlet enters according to square equallyRow layout, the spacing of plastics bandlet is 1-2 times of plastic draining distance between plates, and plastics bandlet is positioned at four plastic draining boardsThe foursquare center surrounding.
In technique scheme, described monitoring instrument is pore pressure gauge, delaminating deposition or level of ground water pipe
In technique scheme, chimney filter adopts PVC (polyvinyl chloride) screwed pipe, caliber 63mm, and ring stiffness is greater than6kN/m2, chimney filter is pressed the punching of 20mm spacing total length, and twines 2～3 metafiltration cloth outward.
In technique scheme, go out film device and be fixed by upper and lower two ring flanges, and diaphragm seal is fixed on up and downBetween two ring flanges, tighten upper and lower two ring flanges by four screw rods air tight to ensure, be chosen in upper and lower two methodsBetween blue dish, rubber blanket is set, upper lower flange forms path, and lower flange is connected with four-way base, and four-way base is used forBe connected with the chimney filter distributing in sand bedding course or air injection pipe.
In technique scheme, air injection pipe is selected plastic tube, and preferred embedded steel wire is as the PVC (polyvinyl chloride) of skeletonFlexible pipe, caliber 50mm.
In technique scheme, for convenience of connecting, use four-way connection (preferably hard PVC pipe) to connect plastics bandletAnd air injection pipe, and use iron wire to be fixed.
In technique scheme, press mold trench depth is 1.0～2.0m.
In technique scheme, the width of wax wall is not less than 1.2m, and entering the impermeable stratum degree of depth is 1.0-1.2m,The clay content of mix back wall should be greater than 15%, and infiltration coefficient is not more than 1 × 10-5cm/s。
In technique scheme, in construction area, plastic draining board is consistent with the depth of burying of plastics bandlet.
In technique scheme, in sand bedding course, air injection pipe is positioned at top or the below of chimney filter.
In technique scheme, in sand bedding course, air injection pipe horizontal level of living in apart from the distance of sand bedding course upper surface is1/4th of sand bedding course thickness arrives half.
In technique scheme, in sand bedding course, chimney filter horizontal level of living in is sand apart from the distance of sand bedding course upper surface/ 3rd of a cushion thickness arrives half.
In technique scheme, the first tube connector is identical with the material of the second tube connector, all can adopt embedded steel wire conductPVC (polyvinyl chloride) flexible pipe of skeleton.
Construction starts, and starts jet pump, utilizes plastic draining board-chimney filter-go out film device-the first tube connector-jet pumpPumping channel construction area is vacuumized; Start air compressor simultaneously, utilize air compressor-the second to connectThe loading line of managing-going out film device-air injection pipe-plastics bandlet is filled with gas in plastics bandlet, so that plastics bandlet producesRaw side is swollen, and periphery is produced to squeezing action.
During whole precompressed, jet pump unlatching rate is not less than 80%, more than under film, vacuum requires to reach 85kPa, takes outWater (vacuumizing) carries out 80-100 days continuously, and be 24 hours every day; High-pressure gas pressure is 0.3～0.5MPa, adoptsThe mode continuous or inflate at interval, carries out 80-100 days, and be 24 hours every day.
In whole construction period, utilize the monitoring instrument of burying underground to carry out the monitoring of construction progress and quality, determine discharge time.After unloading, disconnect the first tube connector and go out film device and the second tube connector and go out film device, remove diaphragm seal, membraneDevice, sand bedding course and wherein air injection pipe and chimney filter, be retained in plastics bandlet and plastic draining board in construction area, adoptsVibroroller cmpacting is processed construction area, to eliminate the space after plastics bandlet expands.
The present invention uses plastics bandlet and plastic draining board to coordinate, and makes plastics bandlet side swollen by injecting gases at high pressure,Apply lateral load to the soil body, carry out draining by plastic draining board. On the one hand, according to aperture cavity expansion theory, plastics are flatWith the swollen crack that can make the soil body produce horizontal radiation shape of side, further increase horizontal osmotic coefficient and the coefficient of consolidation, addFast soil body horizontal is to fixed. Larger crack can form a certain amount of horizontal drainage face simultaneously, shortens vertical drainage spacing,Accelerate the vertically fixed of the soil body. On the other hand, plastics bandlet side is swollen has increased level to additional load to the soil body, and raising addsGu after foundation bearing capacity; After unloading, can, by vibroroller cmpacting to eliminate the space after plastics bandlet expands, make top layer groundBearing capacity is further enhanced. In a word, compared with prior art, one aspect of the present invention bandlet side is swollen, and accelerate in generation crackSoil body discharging consolidation; The level that applies on the other hand further improves the foundation bearing capacity after reinforcing to additional load. The present inventionCan improve efficiency of construction, cost saving, reduction of erection time.
Brief description of the drawings
Fig. 1 is the distribution schematic diagram (top view) of plastics bandlet and plastic draining board in technical solution of the present invention, and wherein 2 for mouldingMaterial drain bar, 3 is plastics bandlet.
Fig. 2 is the schematic diagram of the swollen combined vacuum precompressed of bandlet side of the present invention ground treating apparatus, and wherein 1 is sand bedding course, and 2 is plasticsDrain bar, 3 is plastics bandlet, and 4 is monitoring instrument, and 5 is chimney filter, and 6 for going out film device, and 7 is air injection pipe, and 8 is four-wayJoint, 9-1 is the first tube connector, and 9-2 is the second tube connector, and 10 is air compressor, and 11 is press mold ditch, 12 areDiaphragm seal, 13 is wax wall, 14 is jet pump.
Fig. 3 is plastics bandlet in treating apparatus of the present invention, air injection pipe and four-way connection connection diagram, and wherein 3 is plastics bandlet,7 is air injection pipe, and 8 is four-way connection, and 15 is iron wire.
Fig. 4 is the structural representation that goes out film device in treating apparatus of the present invention, and wherein 12 is diaphragm seal, and 16 is upper flange plate, 17For four-way base, 18 is bolt, and 19 is rubber blanket, and 20 is lower flange.
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with specific embodiment.
Taking the region of 10,000 square metres of length and width 100m × 100m as example, smooth location, and lay sand bedding course on earth's surface,Adopt medium coarse sand to carry out sand bedding course setting, thickness can be 40～50cm, and infiltration coefficient is greater than 1 × 10-2cm/s。
In the region of 10,000 square metres, set plastic draining board and plastics bandlet: according to the interplanar spacing cloth of plastic draining boardPut, adopt board-plugging device that plastic draining board is set to projected depth, plastic draining board adopts Type B plastic draining board, setsIn process, avoid plastic draining board wrench to pollute; Arrange according to the interplanar spacing of plastics bandlet, adopt board-plugging device that plastics are flatBand sets projected depth, and plastics bandlet adopts PE material high strength Flexible water pipe (being polyethylene Flexible water pipe), unswollen stateWidth 150mm, the first heat bonding in bottom or the thin wire colligation of plastics bandlet make it air tight, and then set.In the time setting plastic draining board and plastics bandlet, select plastic draining board according to horizontal spacing 1m, longitudinal pitch 1m'sSquare arranges, so that the distribution unit of the plastic draining board of four plastic draining board formation 1m × 1m, at plasticsThe center of drain bar distribution unit arranges plastics bandlet, as shown in Figure 1.
In the region of 10,000 square metres, bury monitoring instrument underground, generally can adopt pore pressure gauge, delaminating deposition or groundLower water level pipe, to realize monitoring constantly.
In sand bedding course, bury chimney filter underground, and colligation is connected with chimney filter by the wrench of plastic draining board, chimney filter with go out film device phaseConnect; Go out film device and be connected with jet pump by the first tube connector, so, formation is from plastic draining board-chimney filter-go outThe evacuation passageway of film device-the first tube connector-jet pump. Chimney filter adopts PVC (polyvinyl chloride) screwed pipe, caliber63mm, ring stiffness is greater than 6kN/m2, chimney filter is pressed the punching of 20mm spacing total length, and twines 2～3 metafiltration cloth outward. Membrane dressPut employing existing structure, be fixed by upper and lower two ring flanges, and diaphragm seal is fixed between upper and lower two ring flanges,Tighten upper and lower two ring flanges by four screw rods air tight to ensure, be chosen between upper and lower two ring flanges rubber is setPad, upper lower flange forms path, and lower flange is connected with four-way base, and four-way base is used for distributing with sand bedding courseChimney filter is connected.
In sand bedding course, bury air injection pipe underground, and plastics bandlet be connected with air injection pipe, air injection pipe with go out film device and be connected, go outFilm device is connected with air compressor by the second tube connector, so, formation from air compressor-the second tube connector-Go out the loading line of film device-air injection pipe-plastics bandlet; Go out film device and select existing structure, with formation evacuation passagewayTo go out film device identical; Air injection pipe is selected plastic tube, and preferred embedded steel wire is as PVC (polyvinyl chloride) flexible pipe of skeleton,Caliber 50mm; For convenience of connecting, use four-way connection (preferably hard PVC pipe) to connect plastics bandlet and air injection pipe,And use iron wire to be fixed, make it air tight.
Upper surface at sand bedding course arranges diaphragm seal, and diaphragm seal is selected 2～3 layers of polyethylene or polyvinyl chloride film, or rootNeed to be by factory's once hot pressing according to construction.
Surrounding at construction area (being stabilization zone) arranges press mold ditch, and diaphragm seal four limits spread in press mold ditch and re-use clayBackfill, press mold trench depth is 1.0～2.0m. Surrounding at construction area (being stabilization zone) arranges wax wall, clayEnvelope wall width is not less than 1.2m, enters the about 1.0m of the impermeable stratum degree of depth, and the clay content of mix back wall should be greater than 15%,Infiltration coefficient is not more than 1 × 10-5Cm/s, wax wall is arranged on the below of press mold ditch.
In above-mentioned setting, in stabilization zone, plastic draining board is consistent with the depth of burying of plastics braid.
In above-mentioned setting, in sand bedding course, air injection pipe is positioned at top or the below of chimney filter.
In above-mentioned setting, in sand bedding course, air injection pipe horizontal level of living in is sand pad apart from the distance of sand bedding course upper surface/ 4th of a layer thickness arrives half.
In above-mentioned setting, in sand bedding course, chimney filter horizontal level of living in is sand bedding course apart from the distance of sand bedding course upper surface1/3rd of thickness arrives half.
In above-mentioned setting, the first tube connector is identical with the material of the second tube connector, can all select embedded steel wire as skeletonPVC (polyvinyl chloride) flexible pipe.
In the process of burying into said structure underground, connecting after loading line, start air compressor, check whole heightWhether good seal of the body conveying system of calming the anger, remedies air leak position in time; After passed examination, the second tube connector and membrane are filledPut and take apart, then carry out plastic film mulch installation.
In the time constructing, air compressor requires maximum pressure at expulsion to be not less than 0.5MPa. Jet pump power is not less than7.5kW, and can form the vacuum pressure that is not less than 0.096MPa.
Construction starts, and starts jet pump, utilizes plastic draining board-chimney filter-go out film device-the first tube connector-jet pumpPumping channel construction area is vacuumized to processing, start air compressor simultaneously, utilize air compressor-the secondThe loading line of tube connector-go out film device-air injection pipe-plastics bandlet is filled with gas in plastics bandlet, so that plastics are flatIt is swollen that band produces side, and periphery is produced to squeezing action.
During whole precompressed, jet pump unlatching rate is not less than 80%, more than under film, vacuum requires to reach 85kPa, takes outWater (vacuumizing) can carry out 80-100 days continuously, and be 24 hours every day; High-pressure gas pressure is 0.3～0.5MPa, adoptsBy mode continuous or interval inflation, to carry out 80-100 days, be 24 hours every day.
In whole construction period, utilize the monitoring instrument of burying underground to carry out the monitoring of construction progress and quality, determine discharge time.After unloading, disconnect the first tube connector and go out film device and the second tube connector and go out film device, remove diaphragm seal, membraneDevice, sand bedding course and wherein air injection pipe and chimney filter, be retained in plastics bandlet and plastic draining board in construction area, adoptsVibroroller cmpacting is processed construction area, to eliminate the space after plastics bandlet expands.
After construction finishes, ground is fetched earth and tests and carry out laboratory soil test, vane-shear strength test and showField load test, processes consolidation effect to ground and evaluates, and result shows that consolidation effect meets construction requirement, and vacuum is pre-More than pressure reinforcing groundwork characteristic load bearing capacity on average can reach 80kPa.
Above the present invention is done to exemplary description, should be noted that in the situation that not departing from core of the present invention,The replacement that is equal to that any simple distortion, amendment or other those skilled in the art can not spend creative work all fallsEnter protection scope of the present invention.
Claims (10)
1. the swollen combined vacuum precompressed of bandlet side ground treating apparatus, is characterized in that, sand bedding course is set above construction area,In construction area, set plastic draining board and plastics bandlet, in construction area, bury monitoring instrument underground; In sand bedding course, buryIf chimney filter, and plastic draining board is connected with chimney filter, chimney filter with go out film device and be connected; Go out film device by the first tube connectorBe connected with jet pump, form from plastic draining board-chimney filter-go out pumping channel of film device-the first tube connector-jet pump;In sand bedding course, bury air injection pipe underground, and plastics bandlet be connected with air injection pipe, air injection pipe with go out film device and be connected, membrane dressPut by the second tube connector and be connected with air compressor, form from air compressor-the second tube connector-go out film device-noteThe loading line of tracheae-plastics bandlet; Upper surface at sand bedding course arranges diaphragm seal, in the surrounding of construction area, pressure is setFilm ditch arranges wax wall below press mold ditch, and diaphragm seal four limits spread in press mold ditch and use clay compacting.
2. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that plastic rowWater plate is arranged according to square; Plastics bandlet arranges according to square equally, and the spacing of plastics bandlet is plastics1-2 times of spacing of prefabricated drain, and plastics bandlet is positioned at the foursquare center that four plastic draining boards surround.
3. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that, described inMonitoring instrument is pore pressure gauge, delaminating deposition or level of ground water pipe; Use four-way connection to connect plastics bandlet and noteTracheae, and use iron wire to be fixed.
4. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that membraneDevice is fixed by upper and lower two ring flanges, and diaphragm seal is fixed between upper and lower two ring flanges, by four spiral shellsIt is air tight to ensure that bar is tightened upper and lower two ring flanges, is chosen between upper and lower two ring flanges and rubber blanket is set, upper laxative remedyBlue dish forms path, and lower flange is connected with four-way base, and four-way base is used for the chimney filter or the gas injection that distribute with sand bedding coursePipe is connected.
5. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that chimney filterAdopt polyvinyl chloride screwed pipe, caliber 63mm; Air injection pipe is selected the polyvinyl chloride hose of embedded steel wire as skeleton, pipeFootpath 50mm; The first tube connector is identical with the material of the second tube connector, all can adopt the polychlorostyrene second of embedded steel wire as skeletonAlkene flexible pipe.
6. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that press moldTrench depth is 1.0～2.0m; The width of wax wall is not less than 1.2m, and entering the impermeable stratum degree of depth is 1.0-1.2m,The clay content of mix back wall should be greater than 15%, and infiltration coefficient is not more than 1 × 10-5cm/s。
7. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that, is executingIn territory, work area, plastic draining board is consistent with the depth of burying of plastics bandlet; In sand bedding course, air injection pipe is positioned at the upper of chimney filterSide or below.
8. the swollen combined vacuum precompressed of bandlet side according to claim 1 ground treating apparatus, is characterized in that, at sandIn bed course, air injection pipe horizontal level of living in is that 1/4th of sand bedding course thickness arrives half apart from the distance of sand bedding course upper surface;In sand bedding course, chimney filter horizontal level of living in is 1/3rd to one of sand bedding course thickness apart from the distance of sand bedding course upper surfaceHalf.
9. the method for utilizing the swollen combined vacuum precompressed of the bandlet side ground treating apparatus described in claim 1 to process, itsBe characterised in that, start jet pump, utilize taking out of film device-the first tube connector-jet pump of plastic draining board-chimney filter-go outAquaporin vacuumizes construction area; Start air compressor simultaneously, utilize air compressor-the second tube connector-The loading line that goes out film device-air injection pipe-plastics bandlet is filled with gas in plastics bandlet, so that plastics bandlet produces sideSwollen, periphery is produced to squeezing action.
10. processing method according to claim 9, is characterized in that, jet pump unlatching rate is not less than 80%, under filmVacuum vacuumizes continuously and carries out 80-100 days more than requiring to reach 85kPa, and be 24 hours every day; Gases at high pressure are pressedPower is 0.3～0.5MPa, adopts mode continuous or interval inflation, carries out 80-100 days, and be 24 hours every day; ?Whole construction period, utilize the monitoring instrument of burying underground to carry out the monitoring of construction progress and quality, determine discharge time; UnloadingAfterwards, disconnect the first tube connector and go out film device and the second tube connector and go out film device, remove diaphragm seal, go out film device,Sand bedding course and wherein air injection pipe and chimney filter, be retained in plastics bandlet and plastic draining board in construction area, adopts vibrating rollerPress construction area is processed, to eliminate the space after plastics bandlet expands.
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| CN201610111261.XA CN105603963A (en) | 2016-02-29 | 2016-02-29 | Flat belt lateral swelling combined vacuum pre-pressing foundation processing device and method |
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| CN201610111261.XA CN105603963A (en) | 2016-02-29 | 2016-02-29 | Flat belt lateral swelling combined vacuum pre-pressing foundation processing device and method |
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Cited By (11)
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| CN106049518A (en) * | 2016-07-08 | 2016-10-26 | 廊坊市仁达岩土工程有限公司 | Improved vacuum dewatering system and control method thereof |
| CN106284277A (en) * | 2016-08-22 | 2017-01-04 | 南京新都地下工程研究院有限公司 | A kind of air sac pressing draining combined vacuum precompressed foundation reinforcement method |
| CN106592572A (en) * | 2016-10-21 | 2017-04-26 | 温州大学 | Air pressure split foundation strengthening treatment structure and method adopting air pressure split foundation strengthening treatment structure |
| CN107190727A (en) * | 2017-06-06 | 2017-09-22 | 中山大学 | A kind of new drain consolidation system and method |
| CN107806079A (en) * | 2017-09-28 | 2018-03-16 | 无锡厚发自动化设备有限公司 | A kind of reinforced soft soil ground device |
| CN107938646A (en) * | 2017-12-28 | 2018-04-20 | 中交天航港湾建设工程有限公司 | A kind of membrane attachment device for vacuum pump and vacuum diaphragm drainage pipeline |
| CN108330945A (en) * | 2018-03-29 | 2018-07-27 | 中国建筑第二工程局有限公司 | Vacuum precompressed soft foundation processing membrane device goes out membranous system and its construction method |
| CN108894207A (en) * | 2018-07-27 | 2018-11-27 | 湖南宏禹工程集团有限公司 | The method of extrusion drainage device and reinforcing soft ground for reinforcing soft ground |
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| CN110130315A (en) * | 2019-05-09 | 2019-08-16 | 同济大学 | In conjunction with air bag hole in pneumatic radial precompressed vacuum drainage panel assembly and drainage system |
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