CN107268650A - A kind of industrial swirling flow precipitates pool structure not drainage open caisson method - Google Patents
A kind of industrial swirling flow precipitates pool structure not drainage open caisson method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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Abstract
Pool structure not drainage open caisson method is precipitated the invention discloses a kind of industrial swirling flow, belongs to open caisson construction field.For construction period length present in prior art open caisson construction, low construction efficiency, easily there is quality accident, cost is high the problem of, the invention provides a kind of industrial swirling flow precipitation pool structure not drainage open caisson method, its step is as follows：Step A, structure external pelivimetry line setting, and measurement control point is set；Step B, it is excavated to the open caisson basil and plays heavy absolute altitude certain depth below；Step C, open caisson basil sand bedding course, plain concrete setting cushion and poppet construction；Step D, first section open caisson manufacture；Step E, first section well sinking；Step F, merogenesis open caisson manufacture are simultaneously docked；Step G, bottom sealing；Last open caisson inner structure construction.The features such as it has high high efficiency of construction, system easy to control the quality, construction safety coefficient, effective reduction engineering cost.
Description
Technical field
The present invention relates to open caisson construction field, pool structure not drainage is precipitated more specifically to a kind of industrial swirling flow
Open caisson method.
Background technology
For industrial rotational flow settling pond, contain a variety of water in pond, cause the soil body in sedimentation basin soft, but conventional open caisson
The draining that construction method generally requires to carry out early stage is constructed, in conventional open caisson construction, big (generally more than for the scale of construction
Open caisson 6m) is in drainage sink, and substantially deformation easily occurs in the well side soil body, and significantly differential settlement occurs in ground；When in well
Draw water forced landing when, water level decreasing is excessive and makes Water And Earth Pressures difference inside and outside well excessive, and well side and the development of shaft bottom soil body creeping are serious, give
Correction and structure positioning bring great difficulty；Big scale of construction structure is also possible in very short time because internal cause is not clear flabbily
Matter layer and produce significantly it is quick sink；More difficult control is heavy only etc. when sinking close to projected depth.Conventional construction method consumes
Take a large amount of manpower and materials, there is construction period length, low construction efficiency, quality accident, high cost weak point easily occur.
Existing patent application mainly uses drainage to be constructed, and causes long construction period, and cost is high, Chinese patent
Application, application number 201610527155.X, discloses a kind of open caisson construction method, solves nothing publication date on November 9th, 2016
The problem of opportunity that method is clearly rectified a deviation, its drip irrigation device is that corresponding open caisson construction mode is divided into three phases, respectively
For first heavy stage, eventually stage of normally sinking, heavy stage, and clearly need to reach in the correspondence stage it is corresponding under the conditions of, can be with
Rectified a deviation, while open caisson can be rectified a deviation using one or more kinds of satisfactory after correcting, and to the feelings in each stage
Condition carries out strict monitoring, to cause once shifting to be monitored to, and is directly rectified a deviation, and the open caisson of this invention is applied
Work method, can in real time be monitored in the construction of open caisson, and opportunity and the mode of correction of control correspondence correction, be made
More specification during open caisson, can preferably complete the construction of open caisson.This scheme is carried out primarily directed to correction scheme
Improve, but how not ensure open caisson when not draining to overall, cost is high, long construction period.
The content of the invention
1. the technical problem to be solved
For construction period length present in prior art, low construction efficiency, easily there is quality accident, cost is high asks
Topic, pool structure not drainage open caisson method is precipitated the invention provides a kind of industrial swirling flow.It has efficiency of construction height, quality easy
The features such as control, high construction safety coefficient, effective reduction engineering cost.
2. technical scheme
The purpose of the present invention is achieved through the following technical solutions.
A kind of industrial swirling flow precipitates pool structure not drainage open caisson method, open caisson is divided into some sections, in well sinking
The open caisson manufacture for first carrying out a section is waited, this section well sinking is carried out afterwards, then carry out next section open caisson manufacture and docked with upper one section
And sinking, circulation is completed after open caisson manufacture, docking and the sinking of all sections, then carries out open caisson internal structure construction.
A kind of industrial swirling flow precipitates pool structure not drainage open caisson method, and its step is as follows：
Step A, structure measurement line setting, setting structure external pelivimetry point；
Step B, the open caisson basil have been excavated to heavy absolute altitude certain depth below, and carry out drainage works；Height herein is set
Put, need to leave construction space for basil formwork erection due to playing the position below heavy absolute altitude, therefore need to be excavated to below absolute altitude
Certain depth, the standard of certain depth is, it is ensured that formwork erection has enough operating spaces；
Step C, open caisson basil bed course and poppet construction；
Step D, first section open caisson manufacture, while measurement control point in setting structure；
Step E, first section well sinking；
Step F, merogenesis open caisson manufacture, docking, sinking；
Step G, bottom sealing；
Step H, the construction of open caisson inner structure.
Open caisson is divided into some sections, the open caisson manufacture of the section of structure bottom one is first carried out in well sinking, it is rear to carry out
This section well sinking, then carry out next section open caisson manufacture successively and dock and sink, circulation completes the open caisson manufacture of all sections, two
Two docking and sinking.
Further, in step B, after step A line settings, foundation ditch hemline is released, is then opened at swirling flow pond position
Base tunnel is dug, farinose argillic horizon is excavated to, enlightened ditch and sump carry out comprehensive draining in hole, are then extracted into ground by water pump
Sedimentation basin.
Further, cutting shoe cushion construction in step C, the caisson cutting edge of selection installs form using wooden model support, first
Certain thickness sand bedding course (Thickness need to be by bearing capacity calculation) is laid, then pours the plain concretes of certain thickness C15 wherein
Bed course, after basil wooden model support is installed on the plain concrete bed courses of C15.
Further, in step D, merogenesis open caisson manufacture includes the colligation of borehole wall reinforcing bar, open caisson template construct, scaffold
Set up, open caisson concrete casting construction.
Further, the colligation of borehole wall reinforcing bar is comprised the following steps that：
A, first vertical some perpendicular muscle and joint bar colligations firmly, and mark horizontal bar stepping mark on perpendicular muscle；
B and then some horizontal bars of colligation positioning at perpendicular muscle bottom and neat chest, and mark on horizontal bar the stepping mark of perpendicular muscle
Will；
The perpendicular muscle of some designs of c, then colligation, the finally horizontal bar of some designs of colligation again.
7th, a kind of industrial swirling flow according to claim 5 precipitates pool structure not drainage open caisson method, and its feature exists
In：In the setting up of scaffold, every layer of upper scaffold board of scaffold higher slice laying hangs up properly security protection in the outside surrounding of scaffold
Net
With or
Slanting baffle is set up in the surrounding of second layer scaffold.
Further, soil is rushed using hydraulic in sinking, it is by High-Pressure Water with high-pressure hydraulic pump that hydraulic, which rushes soil,
Giant and waterpower suction dredge in open caisson are fed separately to by water inlet pipe, the High-Pressure Water projected using giant is washed away
Soil layer, the mud for forming it into certain denseness converges into collection mud pit, is then suctioned out mud with waterpower suction dredge, from discharge pipeline row
Go out outside well, to well outside sedimentation basin；
Nozzle washes away facade, facade undermining is allowed into slump into breach, punching soil is sequentially surrounding behind first center, and edge
Cutting shoe reserves earthen platform, and then symmetrical layering punching is dug, and keeps open caisson uniform force.
Further, in open caisson concreting, each section epimere seams 400 along construction in the middle of four side total lengths ×
4mm thickness steel plate for sealing water, pours steel plate for sealing water in open caisson wall construction when being docked, and completes the docking of each section open caisson.
Further, during back cover operation, first inhale mud equipment in open caisson bottom center specialty and inhale into Gao Si in the middle of one
All low form of pot bottom, then rinse the side cutting shoe of open caisson four with giant again, it is ensured that basil position is clean, and rear use lifts conduit
Method carries out concrete sealing bottom operation.
3. beneficial effect
Compared to prior art, the advantage of the invention is that：
(1) merogenesis is made and sunk for this kind of variable cross-section ultra-deep size into than advantageous, and a section can be only controlled every time
Change in size, reduces model sheetinstallat difficulty, and shaping degree is good, using merogenesis construction method, the one-off construction turnover of reduction 2/3
The expense of material, alleviates the pressure of marching into the arena of a large amount of construction circulation materials, it is ensured that Field Force's construction safety；It is deep due to sinking every time
Degree is reduced, and is rushed mud and clear mud equipment only with routine, is also particularly suitable for when construction land tenure is nervous narrow and small；
(2) it is an independent square-section body to pour open caisson wall section using merogenesis, pours compactness and is relatively easy to control,
Pour operation difficulty very low, technical requirements threshold is low, easy construction；
(3) merogenesis sink for the plan-position of each section, perpendicularity and absolute altitude (sedimentation value) deviation observe, can and
When rectify a deviation, reduce cumulative departure, it is exceeded that some parameter error occurs in such as merogenesis that has avaled, can be in next section construction, to the greatest extent
Processing is possibly modified, ensures the overall deviation of three sections to greatest extent in specification allowed band, global error of constructing
Controllability is even more ideal；
(4) this programme does not need draining in open caisson, higher for level of ground water, top-down soil in proposed place
Layer has miscellaneous fill, plastic silty clay, flour sand folder silt, very soft sill clay, the soil layer of severely-weathered and middle weathering horizon d
Structure can be applicable, conventional hydraulic fetch earth serial equipment just can be competent at articulated structure high pressure casting, mud pit and conveyance conduit are accounted for
Ground is small, is not required to introduce large-scale relevant device, saves large number quipments input, and cost is low, efficiency high；
(5) scaffold outside surrounding hang up properly safety guard net and or in the surrounding of second layer scaffold set up oblique gear
Plate, effectively prevent the situation of falling from high altitude, protect the safety of workmen, and protective is good；
(6) facade is washed away using nozzle when open caisson, facade undermining is allowed to slump into breach, punching soil order is first
Surrounding behind center, and earthen platform is reserved along cutting shoe, then symmetrical layering punching is dug, and keeps open caisson uniform force, security is good；
(7) during back cover operation, first inhale mud equipment in open caisson bottom center specialty and inhale into a low pot of the high surrounding in centre
Bottom Shape, then rinses the side cutting shoe of open caisson four with giant again, it is ensured that basil position is clean, rear to be mixed with lifting tremie method
Solidifying grave bottom operation, has been effectively ensured the smooth of open caisson bottom, concrete is uniform, closely knit, reach absolute altitude.
Brief description of the drawings
Fig. 1 is open caisson construction method process chart.
Embodiment
With reference to Figure of description and specific embodiment, the present invention is described in detail.
Embodiment 1
This programme is using not drainage, and segmentation pours segmentation and sunk, and completes the open caisson of industrial continuous casting swirling flow pond body structure.
The present invention is applied to pond body subsurface level in ▽ -12m or so, and the open caisson of the larger rectangle pond body of physical dimension is applied
Work.
Such as, the present embodiment is using interior long 20m or so, wide 10m or so, total high 15m or so, variable cross-section wall thickness 800mm-
1200m rectangle pond body is as embodiment, and open caisson of the present invention is made, poured for three times using three restrainings, the method for three sinkings.On ground
Face excavation -1.500m base tunnels, the plain concrete bed course of laying sand bedding course, C15, poppet, make open caisson.
It is determined that the foundation of the sinking height Primary Reference often saved has：
1st, three merogenesis herein are three wall thickness of this engineering as at horizontal merogenesis using at the variable cross-section of pool wall design wall thickness
It is in ▽ -5.000m respectively above is 800mm is thick, ▽ -9.000m are above is 950mm is thick, and ▽ -14.520m are above is 1100mm
Thickness, with wall thickness is calculated according to design load and economic angle, and different-thickness value, the present embodiment are selected for varying environment
In, merogenesis control point is used as using above three change value of thickness.Structure, which is divided into, ensure that construction quality, progress, safety for most
Good construction section, is fetched earth equipment using high-pressure hydraulic, uniform discharge open caisson regional earthwork, and each section at the uniform velocity sinks to corresponding set
Absolute altitude is counted, then segmentation is butted into whole caisson, so that a kind of construction method of design and use requirement.
2nd, the structural strength meter between the deadweight that often saves and water body buoyancy, soil body frictional resistance, basil frictional resistance etc. is considered
Calculate, sink checking computations and antifloating computation, is used as the Main Basiss of Construction control.
3rd, intend each layer clay distribution situation in underground of construction area, include thickness average value, the every layer of top mark of every layer of soil layer
High variation value.
4th, groundwater level depth absolute altitude changing value, level changing amplitude value.
5th, mud soil suction equipment performance and device configuration are rushed, that is, ensures enough, can not the idleness of equipment, it is ensured that often section sinks
Balance.
Above-mentioned data can be added into considering according to prior art, choose suitable sinking height.
The flow of construction is as follows：Structure measurement line setting → open caisson basil has been excavated to below heavy absolute altitude the → open caisson basil
Bed course and poppet construction → head sections open caisson manufacture → head save well sinking → merogenesis open caisson pour docking, sinking → bottom sealing →
Open caisson inner structure is constructed.The making and construction of open caisson are completed by above-mentioned arrangement and method for construction.After head section open caisson manufactures are sunk, carry out
The open caisson manufacture of second section, and docked with head sections, sunk after the completion of docking, the making of Posterior circle progress later section,
Docking, sinking, making, docking and sinking until completing all open caissons.
This programme is made, poured for three times using three restrainings, three method for sinking；Wherein design as follows：Construction first for the first time
Save concrete, according to first segment absolute altitude -14.520m~-9.000m wall thickness be 1100mm, determine first segment sink
5.520m, while the steel plate for sealing water of banjo fixing butt jointing is embedded in into center line position on 5.520m sections (absolute altitude -9.000m), branch
At the top of a circle surrounding；
In the wall thickness that absolute altitude is -9.000m~-5.000m it is 950mm according to second section, determines second section sinking 4.000m,
The water-stopping steel method for embedding of banjo fixing butt jointing is ibid (absolute altitude -5.000m).
In the wall thickness that absolute altitude is -5.000m~0.150m it is 800mm according to Section three, determines Section of three sinking 5.150m.
Reach complete deep.Sinking 14.670m is amounted to, the sinking of whole caisson is completed.
Specific scheme is as follows：
Step A, now for job site structure measurement is carried out, and line setting, record well sinking data are simultaneously marked.
Step B, the open caisson basil have been excavated to heavy absolute altitude certain depth below, excavation of foundation pit and yard drain
After step A line settings, foundation ditch hemline is released, the deep base tunnels of 1.5m are then excavated at swirling flow pond position；Open
Dig to farinose argillic horizon, it is considered to stay 2m operating surfaces, sloping coefficient is 1：1.5, because level of ground water is ± 0.000, it can take
Enlightened ditch and sump carry out comprehensive draining in hole, are then extracted into ground sedimentation basin by water pump.
Step C, cutting shoe cushion construction
Analyzed according to construction condition, carry out cutting shoe cushion construction, caisson cutting edge installs form using sand bedding course, C15
Plain concrete bed course and wooden model support, during using the method, earth excavation to ▽ -1.500m silty clays presss from both sides powder soil horizon, specifically may be used
First to lay certain thickness sand bedding course, then the plain concrete bed courses of C15 are poured, then wooden model support is being installed thereon.
Step D, first section open caisson manufacture
Progress reinforcing bar, open caisson template, concreting, scaffold is needed to be made when open caisson manufacture.
Wherein 1), the reinforcing bar subitem arrangement and method for construction of open caisson manufacture is as follows：
The order of borehole wall reinforcing bar colligation is：
Firmly, the perpendicular muscle quantity at this place is marked at 2~4, and on perpendicular muscle for a, first vertical some perpendicular muscle and joint bar colligations
Horizontal bar stepping mark；
B and then some horizontal bar positioning of colligation at perpendicular muscle bottom and neat chest, this place are positioned using 2 horizontal bars, and in horizontal stroke
The stepping mark of perpendicular muscle is marked on muscle；
The perpendicular muscle of some designs of c, then colligation, the finally horizontal bar of some designs of colligation again.
Borehole wall reinforcing bar, which is answered, answers colligation lacing wire or brace rod between pointwise colligation, double reinforcing bar, the anchoring of borehole wall horizontal bar is long
Degree, and reserved opening rinforcement bar length etc., the specification requirement in design all should be met.Seal vertical to what is reserved after mould
Reinforcing bar should be fixed, in one of horizontal bar positioning of lap-joint's colligation.After placing concrete, the vertical stretching reinforcing bar reserved is tackled
It is corrected, to ensure that its position is accurate.
2), the template subitem construction of open caisson manufacture
Make three section open caissons successively according to design drawing, during first segment open caisson manufacture, adopted in the inner and outer template of open caisson wall
Support is thrown with the road of upper, middle and lower three to be reinforced, to ensure the rigidity and resistance to overturning of template.
When second section, Section of three open caisson manufacture, borehole wall external mold is still as stated above using support is thrown, and borehole wall internal model can use well
Inside set angle steel and the encorbelment method of support of steel pipe is reinforced.
Seal before mould, electricity consumption solid welding in position is scheduled on cage bar or stirrup as requested for various built-in fittings or joint bar.Reserved sleeve pipe
Or the steel framework of reserved hole and reinforcement welding are firmly, and ensure that position is accurate.Necessary brushing releasing agent, makes open caisson before model sheetinstallat
Concrete surface is smooth, reduces resistance and is easy to sink.
3), open caisson merogenesis and the subitem construction of the concrete of docking
Open caisson concreting directly enters mould using concrete transfer pump car.Often save the gradation of open caisson barrel, layering, symmetrically pour,
Each section epimere seams the thick steel plate for sealing water of 400 × 4mm along construction in the middle of four side total lengths, to ensure the waterproof effect of the joint borehole wall.
Complete the docking of each section open caisson.Often section, which pours concrete, to be carried out continuously, and once complete, must not indwelling construction joint.Cast branch pours sword
Pin, borehole wall concrete are it is noted that pour order, and open caisson is set multiple groups of vibrating, progress is poured simultaneously by every layer of 30cm along girth.In order to anti-
Only template deformation or asymmetry settlement of foundation, the concreting of open caisson should symmetrical, balanced blanking, prevent side to be pressurized and make mould
Plate produces displacement, deformation, and every layer must pour within 2h and finish, vibrator movement spacing no more than 0.5m when vibrating；Vibrate
Device answers collision free reinforcing bar, template.12 hours planted agents take maintenance measure after concreting is finished, and concrete surface can be covered
Lid straw bag and water seasoning, borehole wall side form should hang straw bag and water seasoning after removing, daily irrigation times, which should be met, to be kept
Concrete is in the requirement of moisture state.
In such scheme, if before the template of second section open caisson, the cement that personnel should be arranged to cut or clear up at construction joint is thin
Film and the stone loosened, and are rinsed well, but must not ponding, should be in construction joint before continuing to pour the concrete of lower section open caisson
Composition identical cement mortar in one layer of place's laying and concrete, the intensity of first segment concrete must reach design strength, every inclined
Poor (including possible correction) index is all pre-buried (including full during Section of three sinking to prevent in the range of specification permission
Every resistance is can't resist again, large-scale girder steel need to be welded with and stay and be located at the enough built-in fittings of side wall, prevents deformation) complete
And examination passes through, properly closure is completed all structural openings, various safeguard measures have been completed and inspection passes through, and are sunk to
Position, and measure indices data and all determined collection.Second section construction, Section of three same implementation can be carried out.
4), the scaffold subitem construction of open caisson manufacture
Internal frame is removed before first segment wall submersion, external scaffolding is kept not when second section and Section of three open caisson construction
Dynamic, inner side pre-buried length of side on open caisson wall is the square embedded iron parts of 200mm, i.e., respectively at the top of first segment, at the top of second section
Pre-buried two rows ironware, ironware longitudinal pitch 1m, horizontal spacing 1.2m, welds triangular support bracket, takes at an upper portion thereof on this basis
If interior double-pole scaffold.
This programme sets up step pitch according to design requirement, the vertical rod spacing 1.20m of scaffold, cross bar spacing 0.90m, each row
1.8m, and set Crossing brace (pull bar), every layer of upper scaffold board of scaffold higher slice laying, in the outside of scaffold every 7 vertical rods
Surrounding hangs up properly safety guard net, prevents high-altitude object drops from hurting sb.'s feelings.Scaffold construction, which is set up, successively to be kept up with time, keep being higher by
More than structure height 1.8m.And safe slanting baffle is set up in the surrounding of second layer scaffold, prevent high-altitude object from dropping and wounding
Following pedestrian and construction operation personnel.
Step E, first section well sinking
Three section open caissons are sunk by several times, rush soil using hydraulic in sinking, it is to use high-pressure hydraulic pump that hydraulic, which rushes soil,
High-Pressure Water is fed separately to giant and waterpower suction dredge in open caisson, the height projected using giant by water inlet pipe
Current scour soil layer is pressed, and the mud for forming it into certain denseness converges into collection mud pit, then mud is suctioned out with waterpower suction dredge,
From discharge pipeline discharge well outside, to well outside sedimentation basin.When rushing cohesive soil, nozzle is preferably set to wash away facade close to 90o, by facade bottom
Scour out breach is allowed to slump, and punching soil order is surrounding behind first center, and reserves earthen platform along cutting shoe, and then symmetrical layering punching is dug,
Open caisson uniform force, the soil layer that must not be rushed under cutting shoe tread are kept as far as possible.During construction, giant should be made to pour shaft bottom, be made
Into mud amount and the mud amount that sucks of water and waterpower suction dredge of incorporation keep balancing.The capital equipment of hydraulic punching soil
Including ooze sucker (waterpower ooze sucker), dredging tube, raise mud pipe and high-pressure water pipe, centrifugal high-pressure hydraulic pump etc..
It is unearthed while sinking, unearthed order is from inside to outside：Drawn according to sinking situation except the soil in the bottom of a pan in well, last shape
The big the bottom of a pan of cutting shoe supporting is helped, makes open caisson sinking safely.
First segment sinks the just stage, the strict outer soil plug of control cutting shoe, to ensure open caisson uniform force, is supported entirely not in cutting shoe
When can meet sinking and requiring, need to be washed away and fetched earth using giant at cutting shoe, accomplish it is uniform, symmetrical, peel off simultaneously, layer by layer,
It is incremental.While sinking, deflection, the corner discrepancy in elevation, off normal are measured by the use of measuring instrument, it is timely
Solve subsidence velocity：Timing carries out perpendicularity deviation tracking observation with two theodolites；Corner line of ink marker scale is monitored with spirit level
Deviation, controls discrepancy in elevation globality deflection, such as exceedes the 1/4 of tolerance, should rectify a deviation in time, it is ensured that open caisson is in initial sinking rank
Section forms good sinking track.The sinking to open caisson is completed to operate.
Step F, merogenesis open caisson manufacture, docking, sinking
Make after first segment open caisson, sink to specified location；Second section making is carried out, and carries out first segment and second section
The docking of open caisson is poured；Carry out second to sink, carry out Section of three open caisson manufacture after secondary sinking and docking is poured, carry out the 3rd
Secondary sinking, three sinkings and secondary docking are alternately orderly to work, after often open caisson is saved, to caisson structure, construction equipment, construction
Personnel, every technical parameter have the leeway of an adjustment buffering, and the scale of construction and amplitude of adjustment are not very huge, are easy to grasp
Make.It is easy to proceed merogenesis operation, segmentation is sunk, and by open caisson, its deadweight is sunk, and carries out merogenesis casting, what merogenesis sank
Pattern, it is not necessary to which the mud that rushes of large area inhales mud, and effective sinking control speed is sunk stable, and safety economizes on resources, to environment
Influence is also reduced to degree as far as possible.In sinking watching is made, add that protrusion-dispelling is heavy, super heavy measure, by checking, to the 3rd
Section, generation is super heavy or heavy possibility of dashing forward is larger, four girder steels need to be added in the first segment bottom initially sunk, under slowing down
It is heavy.Shaft bottom adds girder steel method, and this programme is to set heat at bottom plate bottom to prick H profile steelFour roads, along the South and the North
To uniform, the long 8m of per pass (i.e. in the width direction), concrete wall is set8 pieces of embedded part, is buried, H types before first segment sinking
Steel side is set up, and (horizontal plane is wide by 588, can pass through correlation checking computations.) above-mentioned size and structure select according to different engineerings
Carried out with different reinforcing sizes.
Step H, bottom sealing
When well sinking also has 0.1m meters or so away from designed elevation, stop cutting the earth and drawn water in well, make it completely by deadweight
Sink down into designed elevation or close to designed elevation.During back cover operation, first inhale mud equipment in open caisson bottom center specialty and inhale into one
The individual the bottom of a pan, then rinses the side cutting shoe of open caisson four with giant again.Clean out.Back cover operation can be carried out, according to mixing under water
Solidifying soil pours working specification, and the absolute altitude and slump of concrete are grasped under water, and feels the whether uniform situation of concrete,
Ensure that concrete is uniform, closely knit, reach absolute altitude, to ensure back cover water squeezing success, irrigated after concrete, according to season, it is necessary to support
Shield 7-10 days (winter wants proper extension) can draw water.
Step H, the construction of open caisson inner structure.After back cover is completed, the construction in the wells such as wall, plate, post is carried out.Complete overall apply
Work.
Schematically the invention and embodiments thereof are described above, the description does not have restricted, not
In the case of the spirit or essential characteristics of the present invention, the present invention can be realized in other specific forms.Institute in accompanying drawing
What is shown is also one of embodiment of the invention, and actual structure is not limited thereto, any attached in claim
Icon note should not limit involved claim.So, if one of ordinary skill in the art is enlightened by it, do not departing from
In the case of this creation objective, the frame mode similar to the technical scheme and embodiment are designed without creative, all should
Belong to the protection domain of this patent.In addition, the word of " comprising " one is not excluded for other elements or step, the word of " one " one before element
It is not excluded for including " multiple " element.The multiple element stated in claim to a product can also by an element by software or
Person hardware is realized.The first, the second grade word is used for representing title, and is not offered as any specific order.
Claims (10)
1. a kind of industrial swirling flow precipitates pool structure not drainage open caisson method, it is characterised in that：Open caisson is divided into some sections, heavy
Underground first carries out the open caisson manufacture of first section when heavy, sunk afterwards, then carries out next section open caisson manufacture and docked with upper one section
And sinking, circulation is completed after open caisson manufacture, docking and the sinking of all sections, then carries out open caisson internal structure construction.
2. a kind of industrial swirling flow according to claim 1 precipitates pool structure not drainage open caisson method, its step is as follows：
Step A, structure measurement line setting, setting structure external pelivimetry point；
Step B, it is excavated to the open caisson basil and rises below heavy absolute altitude；
Step C, open caisson basil sand bedding course, plain concrete bed course and poppet construction；
Step D, first section open caisson manufacture, while measurement point in setting structure；
Step E, first section well sinking；
Step F, merogenesis open caisson manufacture, docking, sinking；
Step G, bottom sealing, pour bottom plate；
Step H, the construction of open caisson inner structure.
3. a kind of industrial swirling flow according to claim 2 precipitates pool structure not drainage open caisson method, it is characterised in that：Step
In rapid B, after step A line settings, foundation ditch hemline is released, then base tunnel is excavated at swirling flow pond position, is excavated to silty clay
Layer, enlightened ditch and sump carry out comprehensive draining in hole, are then extracted into ground sedimentation basin by water pump.
4. a kind of industrial swirling flow according to claim 2 precipitates pool structure not drainage open caisson method, it is characterised in that：Step
Cutting shoe cushion construction in rapid C, the caisson cutting edge of selection installs form using wooden model support, first lays sand bedding course, then pour wherein
The plain concrete bed courses of C15 are built, basil wooden model support then is installed on the plain concrete bed courses of C15.
5. a kind of industrial swirling flow according to claim 2 precipitates pool structure not drainage open caisson method, it is characterised in that：Step
In rapid D, merogenesis open caisson manufacture includes the colligation of borehole wall reinforcing bar, open caisson model sheetinstallat, the setting up of scaffold, open caisson concrete is poured
Build.
6. a kind of industrial swirling flow according to claim 5 precipitates pool structure not drainage open caisson method, it is characterised in that：Well
Wall reinforcing bar colligation is comprised the following steps that：
A, first vertical some perpendicular muscle and joint bar colligations firmly, and mark horizontal bar stepping mark on perpendicular muscle；
B and then some horizontal bars of colligation positioning at perpendicular muscle bottom and neat chest, and mark on horizontal bar the stepping mark of perpendicular muscle；
The perpendicular muscle of some designs of c, then colligation, the finally horizontal bar of some designs of colligation again.
7. a kind of industrial swirling flow according to claim 5 precipitates pool structure not drainage open caisson method, it is characterised in that：Pin
In the setting up of hand cradle, every layer of upper scaffold board of scaffold higher slice laying hangs up properly safety guard net in the outside surrounding of scaffold
With or
Slanting baffle is set up in the surrounding of second layer scaffold.
8. a kind of industrial swirling flow according to claim 2 or 5 precipitates pool structure not drainage open caisson method, its feature exists
In：Soil is rushed using hydraulic in sinking, it is to be sent High-Pressure Water respectively by water inlet pipe with high-pressure hydraulic pump that hydraulic, which rushes soil,
The giant and waterpower suction dredge entered in open caisson, the High-Pressure Water projected using giant is washed away soil layer, forms it into one
The mud for determining denseness converges into collection mud pit, then suctions out mud with waterpower suction dredge, sedimentation basin outside well is expelled to from discharge pipeline；
Nozzle washes away facade, and facade undermining is allowed into slump into breach, and punching soil order is surrounding behind first center, and along cutting shoe
Earthen platform is reserved, then symmetrical layering punching is dug, and keeps open caisson uniform force.
9. a kind of industrial swirling flow according to claim 5 precipitates pool structure not drainage open caisson method, it is characterised in that：
When open caisson concreting, each section epimere seams steel plate for sealing water along construction in the middle of four side total lengths, by sealing when being docked
Steel plate is poured in the docking in open caisson wall construction, completing each section open caisson.
10. a kind of industrial swirling flow according to claim 2 precipitates pool structure not drainage open caisson method, it is characterised in that：
During back cover operation, first inhale mud equipment in open caisson bottom center specialty and inhale into a low form of pot bottom of the high surrounding in centre, then
Rinse the side cutting shoe of open caisson four with giant again, it is ensured that clean out cutting shoe and acceptance(check), it is rear using lifting tremie method from
Minimum point proceeds by concrete sealing bottom operation.
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Cited By (7)
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| CN108999205A (en) * | 2018-09-28 | 2018-12-14 | 北京首钢建设集团有限公司 | A kind of basis fluting retaining wall uses the construction method of rectangular steel plates circle |
| CN109339082A (en) * | 2018-11-02 | 2019-02-15 | 中冶天工集团天津有限公司 | A kind of open caisson flushing cinder formula is unearthed system and construction method |
| CN109706952A (en) * | 2018-12-25 | 2019-05-03 | 中建四局第六建筑工程有限公司 | Large-scale well-sinking construction method |
| CN110185844A (en) * | 2019-06-05 | 2019-08-30 | 中交一公局第三工程有限公司 | Shallow earthing pipe-jacking with large diameter construction method |
| CN111877380A (en) * | 2020-06-28 | 2020-11-03 | 中国二十冶集团有限公司 | Drainage structure of cyclone tank open caisson |
| CN112431216A (en) * | 2020-12-03 | 2021-03-02 | 上海二十冶建设有限公司 | Rapid sinking method for sedimentation tank open caisson of rotational flow sedimentation tank |
| WO2023020161A1 (en) * | 2021-11-22 | 2023-02-23 | 中铁四局集团第三建设有限公司 | Method for preventing open caisson from suddenly sinking in soft foundation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999205A (en) * | 2018-09-28 | 2018-12-14 | 北京首钢建设集团有限公司 | A kind of basis fluting retaining wall uses the construction method of rectangular steel plates circle |
| CN109339082A (en) * | 2018-11-02 | 2019-02-15 | 中冶天工集团天津有限公司 | A kind of open caisson flushing cinder formula is unearthed system and construction method |
| CN109706952A (en) * | 2018-12-25 | 2019-05-03 | 中建四局第六建筑工程有限公司 | Large-scale well-sinking construction method |
| CN110185844A (en) * | 2019-06-05 | 2019-08-30 | 中交一公局第三工程有限公司 | Shallow earthing pipe-jacking with large diameter construction method |
| CN111877380A (en) * | 2020-06-28 | 2020-11-03 | 中国二十冶集团有限公司 | Drainage structure of cyclone tank open caisson |
| CN112431216A (en) * | 2020-12-03 | 2021-03-02 | 上海二十冶建设有限公司 | Rapid sinking method for sedimentation tank open caisson of rotational flow sedimentation tank |
| WO2023020161A1 (en) * | 2021-11-22 | 2023-02-23 | 中铁四局集团第三建设有限公司 | Method for preventing open caisson from suddenly sinking in soft foundation |
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