CN205917709U - Integral type well dotted arranges house steward vacuum system - Google Patents

Integral type well dotted arranges house steward vacuum system Download PDF

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Publication number
CN205917709U
CN205917709U CN201620520314.9U CN201620520314U CN205917709U CN 205917709 U CN205917709 U CN 205917709U CN 201620520314 U CN201620520314 U CN 201620520314U CN 205917709 U CN205917709 U CN 205917709U
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vacuum
tubule
integral type
water
type well
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张禹
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Cabr Foundation Engineering Co Ltd
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Cabr Foundation Engineering Co Ltd
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Abstract

The utility model relates to an integral type well dotted arranges house steward vacuum system, it includes violently pipe and longitudinal tubule (L tubule) its characterized in that, violently the pipe is formed by connecting a plurality of violently pipe segmentations and the linkage segment that leads to more, violently connects through the linkage segments that lead to between the pipe segmentation for adjacent two more, and violently the pipe segmentation is including a constriction section and straight tube section, same distance length of violently managing the distance of sectionalised constriction section to longitudinal tubule (L tubule) than straight tube section to longitudinal tubule (L tubule). The utility model has the advantages of easy operation, low cost, construction are effectual.

Description

Integral type well point plastic strip vacuum system house steward
Technical field
This utility model is related to a kind of Treatment Methods of Soft Ground, more particularly, to a kind of integral type well point plastic strip vacuum system House steward.
Background technology
Specified according to " Code for design of building " (gb5007-2011) 7.1.1, soft foundation mean main by becoming silted up The ground that mud, muck soil, rinse fill, miscellaneous fill or other high-compressibility soil layer are constituted.Building is carried out on soft foundation apply Before work, need first soft foundation to be carried out consolidation process, conventional consolidation processing methods have following several:
First, conventional vacuum ground preloading, conventional vacuum ground preloading " the extra large lakes and marhshes domain in land and river is under water " soft soil foundation is equal Need to lay diaphragm seal, sand bedding course, but have the disadvantage in that
1st, large area diaphragm seal difficulty of construction is big, and land vacuum preloading needs artificial plastic film mulch mechanization low degree in a large number, especially It is that underwater vacuum precompression diaphragm seal is more difficult to construct;
2nd, easily damaged gas leakage, one layer of geotextiles cost of two layers of diaphragm seal are high for pvc diaphragm seal low intensity, search air leakage point Difficulty, sealing effectiveness is not good;
3rd, substantial amounts of pvc diaphragm seal is not environmentally;
4th, under film earth's surface maximum up to negative pressure 80kpa, negative pressure is fast toward soil layer deep slippages, typically every toward deep transmission Rice loss negative pressure 10kpa about, 8 to 10 meters about of earth's surface following soft soil vacuum preloading effect is poor, and effective reinforcement depth is shallow;
5th, loading surface is in original place table or backfill earth's surface, even if top layer diaphragm seal is air tight, the stabilization zone surrounding shallow-layer soil body Slow gas leakage still cannot be ignored, and in the case of especially 90 days about long time loading, decline in level of ground water and add to a certain extent Gu area's surrounding shallow soil body drain gas degree more causes anxiety.
2nd, follow-on vacuum pre-press reinforcing has the disadvantage in that
1st, sand bedding course is gone to be changed to hand-type joint direct-connected plastic strip plate mode, changing indirect transfer negative pressure is direct transmission negative pressure mould Formula, but it remains a need for diaphragm seal, and peak suction loading surface is still in earth's surface;
2nd, serous fluid of dredger fill forms sealant or the direct-connected plastic strip of vacuum manifold and buries 1.5 meters about or 3 meters of vacuum chimney filter underground Left and right sides plastic uptake arranges replacement seal film, and 10 days vacuum preloading initial stages right-left seal preferably, but is opened with serous fluid of dredger fill dehydration consolidation Split, level of ground water rapid decrease, sealing effectiveness has a greatly reduced quality;
3rd, reclaim fields from the sea ultra-soft soil cannot mechanical execution, first do artificial plate shallow-layer plastic strip vacuum preloading, treat that its ground is strong Degree is suitable for mechanical execution, then does deep vacuum precompressed, reclaim fields from the sea ultra-soft soil vacuum preloading and conventional vacuum precompressed principle technique Almost consistent, simply artificial and mechanical simple difference, process is more complicated, and cost is high, efficiency is low;
90 days underground water level decreasing of vacuum preloading are typically only 1 ~ 3 meter, and practical application typically processes deep soft soil foundation, shallow Layer effect on driving birds is not good, reinforces groundwork bearing capacity in theory and is generally 80kpa, and practical application superficial layer foundation bearing capacity is past Toward too low or even only 30 ~ 50kpa.
3rd, vacuum-dewatering joint dynamic consolidation construction has the disadvantage in that
1st, Application of light well point precipitation+strong rammer
Traditional house steward and arm, general 6 meters of arm depth, well point spacing is generally 4*4m, using vacuum-dewatering, only drops Water or precipitating, pre-pressing function, can not have vacuum preloading negative pressure consolidation concurrently because the depth as shallow spacing big time is short simultaneously;
2nd, tube well dewatering or deep-well precipitation+strong rammer
Traditional house steward and arm, pipe well adopts immersible pump gravity precipitation, and deep-well precipitation adopts immersible pump gravity precipitation and true The mode that airborne water combines, well-point arrangement spacing is bigger, general 15*15m, and slightly the processing mode dredged, lays particular emphasis on precipitation, due to The spacing excessive time is short can not to have vacuum preloading negative pressure consolidation concurrently simultaneously;
What Dewatering dynamic compaction Ground Treatment was dredged because precipitation is thick layouts and short-term (30 days about) processing mode, is suitable only for shallow-layer Process;
Above all methods all exist can improve and optimize part.
Content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of simple to operate, with low cost, construction effect good Integral type well point plastic strip vacuum system.
The purpose of this utility model is achieved in that
A kind of integral type well point plastic strip vacuum system house steward it is characterised in that it includes transverse tube and longitudinal tubule (L tubule), described transverse tube by Multiple transverse tube segmentations and how logical linkage section are formed by connecting, and pass through how logical linkage section carries out company between two neighboring transverse tube segmentation Connect, transverse tube segmentation includes a necking section and straight length.
The necking section of same transverse tube segmentation to longitudinal tubule (L tubule) distance than straight length to longitudinal tubule (L tubule) distance.
How logical linkage section adopts eight logical linkage sections, and eight logical linkage sections include linkage section main body, the left and right two of linkage section main body End is respectively arranged with transverse tube segmentation interface, is forwardly and rearwardly respectively arranged with three connection interface tubes, even in linkage section main body The adjacent connecting tube of adapter interface is attached, and the adjacent transverse tube segmentation of transverse tube segmentation interface connects.
Described longitudinal tubule (L tubule) is formed by connecting by multiple longitudinal tubule (L tubule) segmentations and three way cock, and two neighboring longitudinal tubule (L tubule) segmentation connects by three Head connects, and the 3rd interface of three way cock connects the transverse tube closing on, and longitudinal tubule (L tubule) segmentation is additionally provided with check valve.
Compared with prior art, the beneficial effects of the utility model are:
1st, sealing system improvement one:
Cancel sand bedding course, by using the shallow-layer soil body at the well-point pipe of integral type well point plastic strip vacuum system as under overlay film First critical seal layer;Good sealing effect, simple and reliable, material-saving of constructing;
2nd, sealing system improvement two:
Setting identical with conventional vacuum precompressed sealing system, diaphragm seal containing geotextiles and mud sealing curtain;
3rd, sealing system improvement three:
Region surface to be reinforced in cofferdam covers water-stop, forms the three seals layer under overlay film;
4th, sealing system improves four
Diaphragm seal indentation sealing postsulcal part divides and is backfilling and compacted, and sealing ditch is poured water to be guaranteed to seal ditch sealing, forms the 4th road Sealing;
5th, Vacuum Loading System improvement one:
Conventional vacuum precompressed, 80kpa negative pressure of vacuum loads and is each provided at earth's surface, and after improvement, 80kpa negative pressure maximum is located at ground The table following shallow-layer soil body and deep soil junction, are improve necessarily by improving vacuum preloading effective reinforcement depth theoretically Depth (depth of first sealant i.e. the shallow-layer soil body), decreases simultaneously and treats reinforcing area surrounding shallow-layer sealing effectiveness not The good negative effect bringing;
6th, Vacuum Loading System improvement two:
Conventional vacuum precompressed using etc. carry compression system, except early stage is in order to check leaking source and slow down plastic strip earth pillar and formed Turn on pump rate 60% ~ 80%, the later stage maintains negative pressure energy saving also to maintain turn on pump rate to be not less than 80%, and other situations were both unchanged, improved Afterwards, using hierarchical loading, until settling stabilization under this grade of negative pressure load, then improving one-level load level again and continuing to add Pressure, until stable, circulate successively, step up zone negative pressure to be reinforced to maximum, similar to static load test hierarchical loading, Also simulate the work progress of construction multistage loadings, be allergic effect power path load consolidation pattern in practice it has proved that, conventional vacuum Although precompressed achieves earth's surface negative pressure 80kpa load level, it is full that the earth's surface following different depth soil body reaches far away more than 80kpa Load state, this is larger mistaken ideas, after improvement, can increase vacuum pump quantity by unlimited in theory by hierarchical loading Realize the fully loaded negative pressure reinforcing state that the different depth soil body all reaches more than theoretical limit 80kpa.This improvement greatly improves Vacuum preloading limit consolidation effect, and conventional vacuum precompressed is difficult to infinitely to improve vacuum pump quantity and realizes hierarchical loading, its Reason is: first, the more difficult random increase vacuum pump quantity of sealing system membrane system complex, once can only lay by predetermined number Complete, it is impossible to adjust vacuum pump quantity according to Monitoring Data to realize dynamic load, two, to be continuously increased with vacuum pump quantity, Level of ground water decline is too fast, and the level of ground water above surrounding soil body forms larger leaking source, and routine adopts wax wall cement Native envelope wall etc. seems helpless less effective in face of the huge leaking source of semi-infinite body ground, and current process materials limit The slow gas leakage that earth's surface sealing system shows under ever-increasing vacuum level, causes the circulation forming a limiting equilibrium, Therefore conventional vacuum is pressed with the vacuum pump quantity of a balance in advance, the every vacuum pump processing area 800 ~ 1500 also often said in specification Square.This is also vacuum preloading 90 days, the theoretical source of 800 ~ 1500 squares of fixed pattern conclusions of every vacuum pump processing area, improves Afterwards, the groundwater recharge of suction, to ground top layer or recharge to ground surrounding, forms reinforcing area body of groundwater seepage flow self-loopa System, preferably achieves the vacuum preloading of hierarchical loading;
7th, vaccum pump unit improves
Conventional vacuum precompressed carries out vacuum preloading using open type from the jet pump that overflows, and is improved to conventional light well point and is adopted Sealed vacuum jet pump, be easy to maintaining, extension device service life, simultaneously facilitate and realize vacuum preloading and precipitation is strong Ram the perfect linking of construction, " vacuum is completed using the same house steward of same equipment same integral type well point plastic strip vacuum system The foundation stabilization task that more than 3 kinds of precompressed, precipitating, pre-pressing, dynamic consolidation ".
8th, the improvement of house steward:
Conventional vacuum precompressed house steward is equal diameter pvc chimney filter etc., improves transverse tube using with self-control venturi jet effect The transverse tube segmentation of necking section improve vacuumizing effect, in addition using how, logical linkage section substitutes traditional threeway and improves tubing utilization rate And efficiency of assembling;
Conventional vacuum precompressed construction unit house steward's quantity often several kms to several myriametres, negative pressure passes through pipeline toward deep Transmission, because path is longer, can cause the larger along path loss of negative pressure, and this loss tends not to ignore, therefore, Improve house steward and adopt jet effect joint, be equivalent to and increased tens even hundreds of minipumps, reducing negative pressure edge While line loss, negative pressure is improved by several micro jets, effect is more preferable.
9th, draining board improves:
Conventional Degradable plastic water drainage plate is central layer degraded, and actual degradation effect is not good, improves draining board and adopts filter membrane Do not stay drainage channel to reduce settlement after construction after degradable biological material, environmental protection and work, central layer need not be degraded, reduce cost simultaneously Central layer is as reinforcement material reinforcing soft soil;
10th, the plastic draining board of conventional vacuum precompressed residual often causes certain residual settlement after work, especially constructs Period fails the soft soil foundation fully consolidating, slow consolidation settlement under load long term after work, forms disease, after improvement, The superstructure (connecting box, well-point pipe and connecting tube) of integral type well point plastic strip pipe can be pulled out, light in vacuum preloading, precipitation The superstructure of integral type well point plastic strip pipe, the superstructure of integral type well point plastic strip pipe after the completion of rammer, is pulled out using pipe extractor Can reuse, simultaneously noresidue drainage channel in shallow soil body under earth's surface, the draining board under the shallow-layer soil body realize overall Do not stay drainage channel after work, reduce residual settlement after work;
11st, conventional precipitation gently rams well point mechanical hole building and does not often take out water formation dried-up well, and general recommendation adopts artificial water Rush method pore-forming, the general 200 ~ 300mm in aperture, general 1 meter about of filter, pore-forming not good often cannot water outlet, cloth dot spacing due to Look after and ram walking and be also impossible to too close, the limited water lift of light well point vacuum-dewatering principle is height-limited, current document finding Light well point the deepest also just at 7 meters about it is considered to precipitation funnel, therefore level of ground water reduces limit depth only 4 ~ 5 meters of left sides The right side, being required to backfill medium coarse sand guarantees water recharging, and water yield is less, causes vacuum jet pump negative pressure to reduce very fast impact vacuum Dewatering effect, but this cause that gas leakage negative pressure in well point is not high simultaneously and work after leave sand drain and continue the unfavorable factors such as drainage subsidence, therefore The popular employing deep-well precipitation of follow-on Dewatering dynamic compaction or tube well dewatering now, but in view of two kinds of dewatering modes layout can not possibly be too Close, precipitation effect can only be played, be difficult to play vacuum preloading effect, integral type well point plastic strip vacuum system, filter depth is permissible Deeper than vacuum-dewatering well point, take into account gravity precipitation and vacuum-dewatering, low price is suitable for large area and lays, and not only improves precipitation, Be conducive to vacuum preloading again, realize mechanized construction pore-forming efficiency height, because filter adopts the higher overlength plastic row of water-flowing amount Water plate, dried-up well rate is almost nil, and either precipitation depth is also or precipitation efficiency perfect can substitute above-mentioned various falls completely Water gently rams mode;
12nd, conventional vacuum precompressed plastic draining board top is located at ground surface, and light rammer can cause place large area water outlet, table soil Layer water content is too high, then affects light rammer and constructs and quality;After improvement, tamping point position arm is extracted, and next-door neighbour is light to ram area peripheral edge Connect house steward and continue holding level of ground water of drawing water, even if therefore gently ram in this point, underground flood peak is also impossible to break through the shallow-layer soil body and oozes It flow to the light rammer of earth surface effects it is ensured that light rammer construction drying is anhydrous;
13rd, early stage is using covering Water Spreading vacuum pre-press reinforcing deep foundation base, but must controlling groundwater level unlikely decline too fast Impact vacuum preloading effect, generally level of ground water decline and should control within 2 ~ 3 meters of underground.Treat that vacuum preloading sedimentation is steady Fixed, open water that cofferdam earial drainage stored (conventional depth of water 50cm about), remove diaphragm seal, the quick lowering of watertable of continuation plays Take into account precipitating, pre-pressing effect vacuum preloading while, complete the first pass dewatering construction of Dewatering dynamic compaction, can be quick after improvement To 5 ~ 8 meters, be beneficial to strong rammer dynamic consolidation increases energy level and influence depth and guarantees to occur without rubber simultaneously lowering of watertable Soil, conventional Dewatering dynamic compaction level of ground water typically only declines 2 ~ 3 meters about, less effective.
14th, conventional vacuum precompressed dewatering effect is not good enough, and conventional Dewatering dynamic compaction does not have vacuum preloading effect, integral type well point Plastic strip vacuum system is laid substantial amounts of draining board and is replaced shorter filter, you can realizing quick lowering of watertable it is also possible to Efficiently realize vacuum seepage precompressed, a kind of 2 kinds of effects of material, realize the purpose of a material multipurpose efficiency energy saving;
15th, conventional vacuum precompressed superficial layer Effect of Ground Treatment be not good enough, and conventional Dewatering dynamic compaction process depth is not good enough, is improved to vacuum Precompressed, precipitating, pre-pressing, precipitation gently ram the multiple effect basement process combining, and deep shallow layer foundation is reinforced simultaneously, is utilizing vacuum On the premise of precompressed deep soil preferably consolidates, form 6 meters about at the shallow-layer soil body using precipitating, pre-pressing and Dewatering dynamic compaction Crust layer, multiple effect increased the densification effect of the soil body, decreases settlement after construction, and this improvement is not increasing larger cost Under the premise of, complete multiple reinforcing task, be particularly suited for the work China Democratic National Construction Association Factory Building storage ground stricter to settlement request and machine Field runway, town road and railway bed etc.;
16th, river sea lakes and marhshes domain underwater vacuum precompression, by above-mentioned analysis, is improved to no film no sand only integrated construction formula well point Plastic strip vacuum system, connects house steward under water, relies on the seepage flow flow of water pressure reduction that jet pump is formed to form subsoil water reciprocation cycle Seepage field, realizes vacuum seepage consolidation;In order to prevent seepage field, Free water body forms invalid seepage flow on the ground, can suitably increase one The well point length of tube of body formula precipitation well point system, at least should be greater than 6 meters of depth of land setting, will according to soil properties and reinforcing Ask and adjust accordingly.
17th, this method is more suitable for ultra-soft foundation reinforcing of reclaiming fields from the sea, and its implementation is, by simply manually inserting one The shallow-layer precipitation vacuum preloading that diaphragm seal realizes four resealings manually laid by body formula well point plastic strip pipe.
Therefore this utility model has the advantages that simple to operate, with low cost, construction effect is good.
Brief description
Fig. 1 is the elevational schematic view of integral type well point of the present utility model plastic strip vacuum system.
Fig. 2 is the schematic top plan view of integral type well point of the present utility model plastic strip vacuum system.
Fig. 3 is the structural representation of integral type well point of the present utility model plastic strip pipe.
Fig. 4 is the sectional view of draining board of the present utility model.
Fig. 5 is the structural representation connecting box of the present utility model.
Fig. 6 is enlarged drawing at a in Fig. 2.
Fig. 7 is the schematic diagram of the transverse tube in Fig. 6.
Fig. 8 is enlarged drawing at the b in Fig. 2.
Fig. 9 is the construction method schematic diagram of embodiment one of the present utility model.
Wherein:
Draining board 1, central layer 1.1, main gusset 1.11, secondary gusset 1.12, filter membrane 1.2, drainage channel 1.3
Connect box 2, housing 2.1, lower interface 2.2, upper interface 2.3, screw hole 2.4
Well-point pipe 3
Connecting tube 4
Transverse tube 5, transverse tube segmentation 5.1, straight length 5.11, the first Taper Pipe section 5.12, the second Taper Pipe section 5.13, how logical linkage section 5.2nd, linkage section main body 5.21, transverse tube segmentation interface 5.22, connection interface tube 5.23
Longitudinal tubule (L tubule) 6, longitudinal tubule (L tubule) segmentation 6.1, three way cock 6.2, check valve 6.3
Vacuum pump 7
Water-stop curtain 8
Deep soil 100
The shallow-layer soil body 200.
Specific embodiment
Referring to Fig. 1 ~ Fig. 9, a kind of well point plastic strip overlay film vacuum pre-pressed joint precipitating, pre-pressing power that this utility model is related to Concretion method, it comprises the following steps:
Step one, levelling of the land, treat that reinforcing area surrounding excavates draining ditch water discharge;
Step 2, selecting not carry out or carry out the pre- rammer before precipitation according to soil condition, energy level fixes tentatively 600 ~ 1000kn.m, square grid spacing 4*4 ~ 7*7m can adjust, and are bulldozed after rammer, select construction water-stop curtain 8, sealing curtain by operating mode Curtain 8 is cement mixing pile lateral seal barricade or mud lateral seal barricade;
Step 3, integral type well point plastic strip vacuum system arrangement
3.1st, plastic strip pipe in integral type well point carries out plugging construction formation integral type well point plastic strip pipe network lattice;
Mesh spacing 1 ~ the 4m of integral type well point plastic strip pipe network lattice is adjustable;
Integral type well point plastic strip pipe (arm after namely improving) includes draining board 1, connects box 2, well-point pipe 3 and connect Adapter 4, described draining board 1 is vertically arranged in deep soil 100, and the length of draining board 1 is 20m, and described well-point pipe 3 erects To being arranged in the shallow-layer soil body 200, the length of well-point pipe 3 is 6 ~ 9m, and the upper end of draining board 1 is passed through to connect box 2 and well-point pipe 3 Lower end connects, and the upper end of well-point pipe 3 is exposed outside the shallow-layer soil body 200, and the upper end of well-point pipe 3 is connected with one end of connecting tube 4, connects The length of pipe 4 is 1 ~ 2m.Well-point pipe 3 and a diameter of 10 ~ 20mm of connecting tube 4.
Draining board 1 includes the central layer 1.1 of inside and filter membrane 1.2, described central layer 1.1 and the filter membrane 1.2 of central layer 1.1 periphery Between form drainage channel 1.3, described central layer 1.1 is made up of non-degradable material or difficult degradation material, and described filter membrane 1.2 is Degradation material is made.
As one kind preferably, central layer 1.1 is made up of plastic material, and filter membrane 1.2 is made up of Caulis et Folium Lini material.
As a kind of preferably, central layer 1.1 includes the main gusset 1.11 of a lateral arrangement and many longitudinally spaced arrangements Secondary gusset 1.12 before and after main gusset 1.11, the sky being formed between main ribs plate 1.11, secondary gusset 1.12 and filter membrane 1.2 Gap is drainage channel 1.3.
After draining board 1 insertion ground, as time goes by, because filter membrane 1.2 is made using degradation material, filter membrane 1.2 realize fast degradation, after filter membrane 1.2 degraded in ground only remaining central layer 1.1, the soil in ground can fill former filter membrane 1.2 and former drainage channel 1.3 space so that soil is fitted tightly with central layer 1.1, therefore central layer 1.1 in ground not only There is not space makes ground continue sedimentation, and also acts the effect of reinforcement, improves in ground different floor heights up and down Integraty.
The lower end of described draining board 1 is provided with bottom discharge plate end socket, and bottom discharge plate end socket adopts plastic adhesive tape paper bag Wrap up in and formed.
Described connection box 2 includes housing 2.1, and the lower end of described housing 2.1 is provided with one and is kissed with draining board 1 upper end shape The lower interface 2.2 closing, the described upper end connecting box 2 is provided with a upper interface 2.3 coincideing with well-point pipe 3 lower end shape, institute State and three screw holes 2.4 are provided with housing 2.1, the rectangular in cross-section structure of described lower interface 2.2, draining board 1 during installation At upper end insertion lower interface 2.2, then in screw hole 2.4, draining board 1 and connection box 2 are connected in one by drivescrew, so Dress outside plastic adhesive tape in lower interface 2.2 afterwards.Described upper interface 2.3 is circular tube structure, and during installation, the lower end of well-point pipe 3 is sheathed on Outside upper interface 2.3, then the lower end of upper interface 2.3 and well-point pipe 3 is dressed outside plastic adhesive tape.
Described connecting tube 4 is wired hose, and connecting tube 4 includes the spiral wire of flexible pipe and Lining Hose.
Described well-point pipe 3 is the plastic tubes such as ppr, and well-point pipe 3 and connecting tube 4 junction are wrapped up by diaphragm seal or steel wire It is wound around, after diaphragm seal parcel, produce negative-pressure dense sealer in integral type well point plastic strip pipe evacuation and inhaled tighter and tighter.Well point Pipe 3 can also adopt same wired hose with connecting tube 4 so that well-point pipe 3 forms integrative-structure with connecting tube 4.
3.2nd, integral type well point plastic strip pipe Mesh connection house steward and vacuum pump form integral type well point plastic strip vacuum system.
Described house steward includes longitudinal tubule (L tubule) 6 and many transverse tubes 5 being connected on longitudinal tubule (L tubule) 6.
By multiple transverse tube segmentations 5.1 and how logical linkage section 5.2 is formed by connecting described transverse tube 5, two neighboring transverse tube segmentation Pass through between 5.1 how logical linkage section 5.2 is attached, how logical linkage section 5.2 preferably employs eight logical linkage sections as one kind, and eight lead to Linkage section includes linkage section main body 5.21, and the left and right two ends of linkage section main body are respectively arranged with transverse tube segmentation interface 5.22, even Connect and three connection interface tubes 5.23 are forwardly and rearwardly respectively arranged with section main body 5.21, connect interface tube 5.23 adjacent Connecting tube 4 is attached, and the adjacent transverse tube segmentation 5.1 of transverse tube segmentation interface 5.22 connects, and described transverse tube segmentation 5.1 includes One necking section, near how logical linkage section 5.2 is arranged, described transverse tube segmentation 5.1 also includes straight length 5.11, described neck to necking section Contracting section includes the first Taper Pipe section 5.12 and the second Taper Pipe section 5.13, the little head end of the first Taper Pipe section 5.12 and the second Taper Pipe section 5.13 little head end docking, the stub end of the first Taper Pipe section 5.12 is adjacent the transverse tube segmentation interface of many logical linkage sections 5.2 5.22 docking, the stub end of the second Taper Pipe section 5.13 docked with one end of straight length 5.11, the other end of straight length 5.11 and its The transverse tube segmentation interface 5.22 of adjacent how logical linkage section 5.2 docks.The taper of the first Taper Pipe section 5.12 is more than the second Taper Pipe section 5.13 taper, necking section forms venturi jet effect.
Described longitudinal tubule (L tubule) 6 is vertically connected at one end of all transverse tubes 5, and transverse tube 5 is provided with transverse tube envelope away from one end of longitudinal tubule (L tubule) 6 Head, away from longitudinal tubule (L tubule) 6, the straight length 5.11 of the transverse tube segmentation 5.1 on transverse tube 5 is close for the necking section of the transverse tube segmentation 5.1 on transverse tube 5 Longitudinal tubule (L tubule) 6.A piece longitudinal tubule (L tubule) 6 connects many transverse tubes 5, described longitudinal tubule (L tubule) 6 connected by multiple longitudinal tubule (L tubule) segmentations 6.1 and three way cock 6.2 and Become, two neighboring longitudinal tubule (L tubule) segmentation 6.1 is connected by three way cock 6.2, the 3rd interface of three way cock 6.2 connects the horizontal stroke closing on Pipe 5, longitudinal tubule (L tubule) segmentation 6.1 is additionally provided with check valve 6.3, and the end of longitudinal tubule (L tubule) 6 is provided with longitudinal tubule (L tubule) end socket.
3.3rd, the total pipe surface in integral type well point plastic strip vacuum system covers one layer of geotextiles two-layer diaphragm seal.
Step 4, vacuum preloading
Treat the cofferdam fill of reinforcing area surrounding, cofferdam fill height 0.6 ~ 1.5m height, take out reinforcing area outside in advance To treating to make the high 0.2 ~ 0.6m of water in reinforcing area cofferdam, then integral type well point plastic strip vacuum system starts vacuum to source water Precompressed, during vacuum preloading, to region surface to be reinforced, region surface to be reinforced all is annihilated by water for the suction whole recharge of subsoil water To certain altitude, realize water covering prepressing, cover water-stop;
Its intermediate pump 7 is preferably sealed vacuum jet pump, and vacuum pump evacuation adopts hierarchical loading evacuation: vacuum The pump hierarchical loading first order takes 1800 ~ 2000 squares of every vacuum pump processing area adjustable, and house steward's first section negative pressure is full table 100kpa, total pipe end is not less than 90kpa, treats that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, vacuum pump hierarchical loading the Two grades take 1300 ~ 1500 squares of every vacuum pump processing area adjustable, treat that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, very The empty pump hierarchical loading third level takes 800 ~ 1000 squares or following adjustable of every vacuum pump processing area, by that analogy, waits to settle Meet sedimentation in continuous 5 days and be not more than 2 millimeters, reach vacuum preloading processing requirement;
The water being stored in the cofferdam fill of opening earial drainage is carried out on step 5, cofferdam fill to gutter, remove geotextiles Diaphragm seal, starts first pass vacuum dewatering preloading, 5 ~ 10 days adjustable, for the purpose of lowering of watertable, treats that level of ground water reaches Require (level of ground water reaches below ground 4 ~ 6m), progressively remove house steward's preparation first pass at tamping point and gently ram;
Step 6, first pass gently ram, and energy level fixes tentatively 1500 ~ 2000kn.m, and square grid spacing 4*4 ~ 7*7m can adjust, Side is removed total tube edge and is gently rammed, progressively forward impelling, and light rammer front region need to continue precipitation guarantees that level of ground water is not gone up, and rams pusher Flat;
Step 7, integral type well point plastic strip pipe Mesh connection residue house steward and vacuum pump, start second time vacuum-dewatering pre- Pressure, 5 ~ 10 days adjustable, progressively water conservation and remove at tamping point part house steward and prepare after the completion of second time vacuum dewatering preloading precipitation Second time light rammer;
Step 8, second time light rammer, energy level fixes tentatively 2000 ~ 2800 kn.m or more, square grid spacing 4*4 ~ 7*7m Adjustable;Side is removed total tube edge and is gently rammed, progressively forward impelling, and light rammer front region need to continue precipitation guarantees that level of ground water is not returned Rise, be bulldozed after rammer;
Step 9, integral type well point plastic strip pipe Mesh connection residue house steward and vacuum pump, start the 3rd time vacuum-dewatering pre- Pressure, 5 ~ 10 days adjustable, progressively water conservation and remove at tamping point part house steward and prepare after the completion of the 3rd time vacuum dewatering preloading precipitation Full rammer;
Step 10, pull out remaining house steward, when the well-point pipe 3 using and connecting tube 4 are split-type structural, by well-point pipe 3 All pull out with connecting tube 4, when use well-point pipe 3 and connecting tube 4 be integral type structure wired hose when, excision ground Connecting tube 4 more than table, is then in the milk in the well-point pipe 3 under earth's surface.Full ram, second time light ram after at least stop 7 It is carried out, energy level 600 ~ 1000kn.m, is bulldozed after rammer;
Step 11, the absolute altitude of vibroroller cmpacting measurement in the whole field are handed over.
Note: integral type well point plastic strip vacuum system can be pre- according to place and soil property situation adjustment spacing and length, vacuum Pressure, precipitation and light ram can according to place and soil property situation set-up procedure and pass and duration, ordinary circumstance descending water 3 ~ 4 times, Gently ram 3 ~ 5 times.Construction period construction monitoring must synchronous carry out it is necessary to the monitoring project carrying out has: pore water pressure, Level of ground water, ground settlement, delaminating deposition, vacuum, realize information-aided construction.
Below supplementary three groups of embodiments:
Embodiment one,
Essential information before basement process:
This ground third layer silt clay layer water content 55%, modulus of compressibility 2.3mpa, average 15 meters of thickness, layer top is buried Deep 5m, 20 meters of layer bottom buried depth.
Implementation steps:
Step one, levelling of the land, treat that reinforcing area surrounding excavates draining ditch water discharge;
Step 2, pre- rammer, energy level 800kn.m, square grid spacing 4m*4m, after rammer, construction cement mixing pile is laterally close Block wall or mud lateral seal barricade;
Step 3, integral type well point plastic strip vacuum system arrangement
3.1st, plastic strip pipe in integral type well point carries out plugging construction formation integral type well point plastic strip pipe network lattice;
The mesh spacing 1.2m of integral type well point plastic strip pipe network lattice, integral type well-point pipe plugs depth 20m
The length of draining board 1 is 14m, and the length of well-point pipe 3 is 6m, and the length of connecting tube 4 is 10cm.Well-point pipe 3 and The diameter 16mm of connecting tube 4.
3.2nd, integral type well point plastic strip pipe Mesh connection house steward and vacuum pump form integral type well point plastic strip vacuum system,
3.3rd, the total pipe surface in integral type well point plastic strip vacuum system covers one layer of geotextiles two-layer diaphragm seal.
Step 4, vacuum preloading
Treat the cofferdam fill of reinforcing area surrounding, cofferdam fill height 1.5m height, take out overseas surrounding source water in advance and extremely add 0.3 m in Gu Qu cofferdam, then starts vacuum preloading seepage consolidation, aspirates the whole recharge of subsoil water to region surface to be reinforced, All being annihilated to 1.0m height by water in reinforcing area surface, realizes water covering prepressing, cover water-stop, cover water seepage flow;
Its intermediate pump 7 is preferably sealed vacuum jet pump, and vacuum pump evacuation adopts hierarchical loading evacuation: vacuum The pump hierarchical loading first order takes 1800 squares of every vacuum pump processing area, and house steward's first section negative pressure is full table 100kpa, Zong Guanmo End is not less than 90kpa, treats that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, the vacuum pump hierarchical loading second level after processing 13 days Take 1300 squares of every vacuum pump processing area, treat after processing 8 days that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, vacuum pump The hierarchical loading third level takes 800 squares of every vacuum pump processing area, treats sedimentation to meet for three days on end and settle less after processing 8 days In 3 millimeters, the vacuum pump hierarchical loading fourth stage takes 600 squares of every vacuum pump processing area, and sedimentation after processing 15 days meets even Sedimentation in continuous 5 days is not more than 2 millimeters, reaches vacuum preloading processing requirement;
The water being stored in the cofferdam fill of opening earial drainage is carried out on step 5, cofferdam fill to gutter, remove geotextiles Diaphragm seal, starts first pass vacuum dewatering preloading, 6 days, for the purpose of lowering of watertable, treats that level of ground water reaches 4m, progressively Remove house steward's preparation first pass at tamping point gently to ram;
Step 6, first pass gently ram, and energy level fixes tentatively 1500kn.m, square grid spacing 4m*4m, is bulldozed after rammer;
Step 7, the remaining house steward of connection and vacuum pump, second time vacuum dewatering preloading of beginning, 5 days, second time vacuum-dewatering Progressively water conservation and remove at tamping point part house steward and prepare second time and light ram after the completion of precompressed precipitation;
Step 8, second time light rammer, energy level fixes tentatively 2000kn.m, square grid spacing 4m*4m;It is light that total tube edge is removed on side Ram, progressively forward impelling, light rammer front region need to continue precipitation guarantees that level of ground water is not gone up, and is bulldozed after rammer;
Step 9, the remaining house steward of connection and vacuum pump, the 3rd time vacuum dewatering preloading of beginning 5 days, the 3rd time vacuum-dewatering Progressively water conservation and remove at tamping point part house steward and prepare full rammer after the completion of precompressed precipitation;
Step 10, pull out remaining house steward, full ram, second time light ram after stop 7 days and carry out, energy level 800kn.m, ram pusher Flat;
Step 11, in the whole field vibroroller cmpacting are handed over.
Construction monitoring during this Foundation Treatment, negative pressure 80kpa at 6 meters of pore water pressure, at 20 meters, negative pressure is average 30kpa, level of ground water declines maximum and is 8 meters, fifty-fifty descends 6 meters about of water level decreasing, and earth's surface average settlement amount is 80cm, pushes away Calculate the degree of consolidation and be not less than 80%,
Foundation detection, foundation bearing capacity is not less than 120kpa, and effective reinforcement depth is not less than 20 meters, is formed in 5 meters of shallow-layer Crust layer static sounding calculates modulus of compressibility 5 ~ 8mpa, and third layer silt clay mechanics index of physics is obviously improved.
Embodiment two,
Essential information before basement process
The 4th layer of very soft sill clay layer water content 38% of this ground, modulus of compressibility 3.8mpa, thick average 13 meters, layer top is buried Deep 3m, 16 meters of layer bottom buried depth.
Step one, levelling of the land, treat that reinforcing area surrounding excavates draining ditch water discharge;
Step 2, do not carry out the pre- rammer before precipitation, construction cement mixing pile lateral seal barricade or mud lateral seal gear Wall;
Step 3, integral type well point plastic strip vacuum system arrangement
3.1st, plastic strip pipe in integral type well point carries out plugging construction formation integral type well point plastic strip pipe network lattice;
The mesh spacing 1.5m of integral type well point plastic strip pipe network lattice, integral type well-point pipe plugs depth 16m
The length of draining board 1 is 10m, and the length of well-point pipe 3 is 6m, and the length of connecting tube 4 is 10cm.Well-point pipe 3 and The diameter 20mm of connecting tube 4.
3.2nd, integral type well point plastic strip pipe Mesh connection house steward and vacuum pump form integral type well point plastic strip vacuum system,
3.3rd, the total pipe surface in integral type well point plastic strip vacuum system covers one layer of geotextiles two-layer diaphragm seal.
Step 4, vacuum preloading
Treat the cofferdam fill of reinforcing area surrounding, cofferdam fill height 1.0m height, take out overseas surrounding source water in advance and extremely add 0.3m in Gu Qu cofferdam, then starts vacuum preloading seepage consolidation, aspirates the whole recharge of subsoil water to region surface to be reinforced, plus Gu region surface is all annihilated to 0.8m height by water, realizes water covering prepressing, cover water-stop, cover water seepage flow;
Its intermediate pump 7 is preferably sealed vacuum jet pump, and vacuum pump evacuation adopts hierarchical loading evacuation: vacuum The pump hierarchical loading first order takes 2000 squares of every vacuum pump processing area, and house steward's first section negative pressure is full table 100kpa, Zong Guanmo End is not less than 90kpa, treats that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, the vacuum pump hierarchical loading second level after processing 10 days Take 1500 squares of every vacuum pump processing area, treat after processing 7 days that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, vacuum pump The hierarchical loading third level takes 800 squares of every vacuum pump processing area, and sedimentation after processing 15 days meets sedimentation in continuous 5 days and is not more than 2 millimeters, reach vacuum preloading processing requirement;
The water being stored in the cofferdam fill of opening earial drainage is carried out on step 5, cofferdam fill to gutter, remove geotextiles Diaphragm seal, starts first pass vacuum dewatering preloading, 7 days, for the purpose of lowering of watertable, treats that level of ground water reaches 5m, progressively Remove house steward's preparation first pass at tamping point gently to ram;
Step 6, first pass gently ram, and energy level fixes tentatively 1800kn.m, square grid spacing 4m*4m, is bulldozed after rammer;
Step 7, the remaining house steward of connection and vacuum pump, second time vacuum dewatering preloading of beginning, 7 days, second time vacuum-dewatering Progressively water conservation and remove at tamping point part house steward and prepare second time and light ram after the completion of precompressed precipitation;
Step 8, second time light rammer, energy level fixes tentatively 2500kn.m, square grid spacing 4m*4m;It is light that total tube edge is removed on side Ram, progressively forward impelling, light rammer front region need to continue precipitation guarantees that level of ground water is not gone up, and is bulldozed after rammer;
Step 9, the remaining house steward of connection and vacuum pump, the 3rd time vacuum dewatering preloading of beginning 7 days, the 3rd time vacuum-dewatering Progressively water conservation and remove at tamping point part house steward and prepare full rammer after the completion of precompressed precipitation;
Step 10, pull out remaining house steward, full ram, second time light ram after stop 7 days and carry out, energy level 1000kn.m, after rammer It is bulldozed;
Step 11, in the whole field vibroroller cmpacting are handed over.
Construction monitoring during this Foundation Treatment, negative pressure 86kpa at 6 meters of pore water pressure, at 16 meters, negative pressure is average 45kpa, level of ground water declines maximum and is 8 meters, fifty-fifty descends 6 meters about of water level decreasing, and earth's surface average settlement amount is 58cm, pushes away Calculate the degree of consolidation and be not less than 80%,
Foundation detection, foundation bearing capacity is not less than 120kpa, and effective reinforcement depth is not less than 16 meters, is formed in 6 meters of shallow-layer Crust layer static sounding calculates modulus of compressibility 8 ~ 13mpa, and the 4th layer of very soft sill clay mechanics index of physics is obviously improved.
Embodiment three,
Essential information before basement process
The 2nd layer of silt clay water content 78% of this ground, modulus of compressibility 2.1mpa, thick average 20 meters, layer top buried depth 4m, 24 meters of layer bottom buried depth.
Step one, levelling of the land, stabilization zone surrounding excavates draining ditch water discharge;
Pre- rammer before step 2, precipitation, energy level 600kn.m, square grid spacing 4m*7m, cement mixing of constructing after rammer Stake lateral seal barricade or mud lateral seal barricade;
Step 3, integral type well point plastic strip vacuum system arrangement
3.1st, plastic strip pipe in integral type well point carries out plugging construction formation integral type well point plastic strip pipe network lattice;
The mesh spacing 1.0m of integral type well point plastic strip pipe network lattice, integral type well-point pipe plugs depth 24m
The length of draining board 1 is 18.5m, and the length of well-point pipe 3 is 5.5m, and the length of connecting tube 4 is 10cm.Well-point pipe 3 And the diameter 16mm of connecting tube 4.
3.2nd, integral type well point plastic strip pipe Mesh connection house steward and vacuum pump form integral type well point plastic strip vacuum system,
3.3rd, the total pipe surface in integral type well point plastic strip vacuum system covers one layer of geotextiles two-layer diaphragm seal.
Step 4, vacuum preloading
Treat the cofferdam fill of reinforcing area surrounding, cofferdam fill height 1.5m height, take out overseas surrounding source water in advance and extremely add 0.3m in Gu Qu cofferdam, then starts vacuum preloading seepage consolidation, aspirates the whole recharge of subsoil water to region surface to be reinforced, plus Gu region surface is all annihilated to 1.2m height by water, realizes water covering prepressing, cover water-stop, cover water seepage flow;
Its intermediate pump 7 is preferably sealed vacuum jet pump, and vacuum pump evacuation adopts hierarchical loading evacuation: vacuum The pump hierarchical loading first order takes 1800 squares of every vacuum pump processing area, and house steward's first section negative pressure is full table 100kpa, Zong Guanmo End is not less than 90kpa, treats that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, the vacuum pump hierarchical loading second level after processing 25 days Take 1300 squares of every vacuum pump processing area, treat after processing 12 days that sedimentation meets sedimentation for three days on end and is not more than 3 millimeters, vacuum The pump hierarchical loading third level takes 800 squares of every vacuum pump processing area, treats that sedimentation meets and settle for three days on end not after processing 12 days More than 3 millimeters, the vacuum pump hierarchical loading fourth stage takes 600 squares of every vacuum pump processing area, and sedimentation after processing 26 days meets Sedimentation in continuous 5 days is not more than 2 millimeters, reaches vacuum preloading processing requirement;
The water being stored in the cofferdam fill of opening earial drainage is carried out on step 5, cofferdam fill to gutter, remove geotextiles Diaphragm seal, starts first pass vacuum dewatering preloading, 10 days, for the purpose of lowering of watertable, treats that level of ground water reaches 4.5m, by Step is removed house steward's preparation first pass at tamping point and is gently rammed;
Step 6, first pass gently ram, and energy level fixes tentatively 1800kn.m, square grid spacing 4m*7m, is bulldozed after rammer;
Step 7, the remaining house steward of connection and vacuum pump, second time vacuum dewatering preloading of beginning, 5 days, second time vacuum-dewatering Progressively water conservation and remove at tamping point part house steward and prepare second time and light ram after the completion of precompressed precipitation;
Step 8, second time light rammer, energy level fixes tentatively 2300kn.m, square grid spacing 4m*7m;It is light that total tube edge is removed on side Ram, progressively forward impelling, light rammer front region need to continue precipitation guarantees that level of ground water is not gone up, and is bulldozed after rammer;
Step 9, the remaining house steward of connection and vacuum pump, the 3rd time vacuum dewatering preloading of beginning 10 days, the 3rd time vacuum-dewatering Progressively water conservation and remove part house steward at tamping point and prepare the 3rd time and light ram after the completion of precompressed precipitation;
Step 10, the 3rd time light rammer, energy level 2800kn.m, square grid spacing 4m*7m;Side is removed total tube edge and is gently rammed, Progressively forward impelling, light rammer front region need to continue precipitation guarantees that level of ground water is not gone up, and is bulldozed after rammer;
Step 11, the remaining house steward of connection and vacuum pump, the 4th time vacuum dewatering preloading of beginning 10 days, the 4th time vacuum fall Progressively water conservation and remove at tamping point part house steward and prepare full rammer after the completion of water for prepressing precipitation;
Step 12, pull out remaining house steward, full ram, the 3rd time light ram after stop 7 days and carry out, energy level 1000kn.m, ram After be bulldozed;
Step 13, in the whole field vibroroller cmpacting are handed over.
Construction monitoring during this Foundation Treatment, negative pressure 83kpa at 6 meters of pore water pressure, at 15 meters, negative pressure is average 40kpa, negative pressure 20kpa at 24 meters, level of ground water declines maximum and is 6.5 meters, fifty-fifty descends 5 meters about of water level decreasing, earth's surface Average settlement amount is 118cm, calculates that the degree of consolidation is not less than 80%,
Foundation detection, foundation bearing capacity is not less than 120kpa, and effective reinforcement depth is not less than 24 meters, shape in 5.5 meters of shallow-layer Crust layer static sounding is become to calculate modulus of compressibility 5.5 ~ 9mpa, the 2nd layer of silt clay mechanics index of physics is obviously improved.

Claims (4)

1. a kind of integral type well point plastic strip vacuum system house steward it is characterised in that it includes transverse tube and longitudinal tubule (L tubule), described transverse tube is by many Individual transverse tube segmentation and how logical linkage section are formed by connecting, and pass through to lead to linkage section being attached between two neighboring transverse tube segmentation more, Transverse tube segmentation includes a necking section and straight length.
2. a kind of integral type well point plastic strip vacuum system house steward according to claim 1 is it is characterised in that same transverse tube The necking section of segmentation to longitudinal tubule (L tubule) distance than straight length to longitudinal tubule (L tubule) distance.
3. a kind of integral type well point plastic strip vacuum system house steward according to claim 1 it is characterised in that lead to linkage section more Using eight logical linkage sections, eight logical linkage sections include linkage section main body, and the left and right two ends of linkage section main body are respectively arranged with transverse tube and divide Segment interface, is forwardly and rearwardly respectively arranged with three connection interface tubes in linkage section main body, connects interface tube adjacent Connecting tube is attached, and the adjacent transverse tube segmentation of transverse tube segmentation interface connects.
4. a kind of integral type well point plastic strip vacuum system house steward according to claim 1 it is characterised in that described longitudinal tubule (L tubule) by Multiple longitudinal tubule (L tubule) segmentations and three way cock are formed by connecting, and two neighboring longitudinal tubule (L tubule) segmentation is connected by three way cock, three way cock's The transverse tube that 3rd interface connection closes on, longitudinal tubule (L tubule) segmentation is additionally provided with check valve.
CN201620520314.9U 2016-06-01 2016-06-01 Integral type well dotted arranges house steward vacuum system Active CN205917709U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105887903A (en) * 2016-06-01 2016-08-24 上海建研地基基础工程有限公司 Integrated well point plastic strip vacuum system header pipe
CN110306520A (en) * 2019-07-05 2019-10-08 杭州交通工程监理咨询有限公司 Soft soil roadbed water bag method pre-compression test method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105887903A (en) * 2016-06-01 2016-08-24 上海建研地基基础工程有限公司 Integrated well point plastic strip vacuum system header pipe
CN105887903B (en) * 2016-06-01 2018-04-27 上海建研地基基础工程有限公司 Integral type well point plastic strip vacuum system manifold
CN110306520A (en) * 2019-07-05 2019-10-08 杭州交通工程监理咨询有限公司 Soft soil roadbed water bag method pre-compression test method

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