CN104895058B - The all-hydraulic two-tube compound club-footed pile machine of static pressure and its construction method - Google Patents
The all-hydraulic two-tube compound club-footed pile machine of static pressure and its construction method Download PDFInfo
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Abstract
The invention discloses a kind of all-hydraulic two-tube compound club-footed pile machine of static pressure and construction method, including clip pile system and be lifted on it is compound two-tube in clip pile system, described compound two-tube including inner and outer tubes, said inner tube is sleeved on outer tube, is fixed using coupling arrangement on inner and outer pipes top；The clip pile system can be made up of upper pile clamping box and lower pile clamping box, upper and lower 35 meters of two sets of pile clamping box effective travels, and lower pile clamping box clamps outer tube, and upper pile clamping box can not only clamp outer tube but also can clamp inner tube, and press to form base expanding and base expanding effect using inner tube.Or the clip pile system includes a lower pile clamping box, lower clip pile upper box part is provided with a clamp support for 2 meters of clear height, piling stroke is 34 meters, top pressure transverse beam system is provided with clamp support, the top pressure transverse beam system square top pressure inner tube on inner pipe, the top pressure transverse beam system square back-pressure inner tube on inner pipe, forms base expanding and base expanding effect.The present invention is a kind of without friction, noiselessness, free of contamination construction machinery and construction technology.
Description
Technical field
The present invention relates to a kind of all-hydraulic two-tube compound club-footed pile machine of static pressure and its construction method, belong to Construction Technology
Field.
Background technology
The compound club-footed pile of strong rammer vibration is a kind of two-tube compound bottom-enlarging filling pile of hammering vibration, and bavin is used in work progress
Used as power is rammed, during hammering, diesel oil produces outburst energy to oil hammer through the atomization of cylinder, and soil property is harder, impact capacity
Bigger, noise is bigger；Soil property is softer, and diesel oil atomization is bad, and black smoke is more, thus diesel hammer in work progress to job site
Surrounding enviroment produce strong noise and vibration, and the black smoke for producing also pollutes environment.Due to these disadvantages, seriously constrain
Diesel hammer is in the regional popularization such as old town, resident living area, hospital, school and uses.
The content of the invention
The technical problem to be solved in the invention is that the defect for overcoming prior art, there is provided a kind of all-hydraulic static pressure is double
Pipe compound club-footed pile machine and its construction method.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of all-hydraulic two-tube compound club-footed pile machine of static pressure of the present invention, including clip pile system and be lifted in clip pile system
Compound two-tube, described compound two-tube including inner and outer tubes, said inner tube is sleeved on outer tube, and inner tube external diameter is less than in outer tube
More than footpath 5cm, inner tube 10-20cm shorter than outer tube, inner tube upper seal steel plate with diameter greater than outer tube external diameter 2-3cm, and inside and outside
Pipe top is fixed using coupling arrangement；Outer tube thickness of steel pipe must not be less than 2cm.
The clip pile system is made up of upper pile clamping box and lower pile clamping box, upper and lower 3-5 meters of two sets of pile clamping box effective travels, under
Pile clamping box clamps outer tube, and upper pile clamping box can not only clamp outer tube but also can clamp inner tube, and press to form base expanding and base expanding effect using inner tube.
Or, the clip pile system includes a lower pile clamping box, and lower clip pile upper box part is provided with a clamp for 2 meters of clear height
Support, piling stroke is 3-4 meters, and top pressure transverse beam system is provided with clamp support, and the top pressure transverse beam system is square on inner pipe
Top pressure inner tube, the top pressure transverse beam system square back-pressure inner tube on inner pipe, forms base expanding and base expanding effect.
The present invention discloses a kind of all-hydraulic two-tube compound pedestal pile constructing process of static pressure, one is connected and fixed
It is inside and outside two-tube hang in pile clamping box, it is inside and outside it is two-tube higher than 0.5 meter of ground surface soil when, clamping oil cylinder starts to clamp work in pile clamping box
Make, outer tube is embraced jail, stake machine flatness is adjusted followed by hydraulic traveling mechanism, inside and outside total powerstation and the two-way correction of theodolite
Pipe perpendicularity, it is ensured that perpendicularity is within code requirement；
1）Pressure pipe top cylinder system is opened, ensures for inner and outer pipes to be pressed onto design mark by 2-4 meters of height of each stroke
It is high；
2）Inner and outer pipes top coupling arrangement is released, inner tube outer tube is extracted into using random crane or crawler crane, in outer tube
Inside pour into 0.25-0.3m3Input material, input material height be H=2-2.5 meter, input material be particle diameter 15-30cm stone, concrete block
And fragment of brick；
3）Interior effective loop wheel machine is put into outer tube and fastens input material, outer tube, jacking cylinder are embraced in subsequent clip pile system work
System starts, 1-1.5 meters will be pulled out by design requirement on outer tube, stop jacking apparatus work, releases grasping system work, folder
Hold oil cylinder and reply internal, about 1.8 meters of a stroke while jacking cylinder system is up walked then is replied and falls piling bottom portion
Start the second stroke and reach inside top, subsequent grasping system work, clamping oil cylinder clips inner tube top steel pipe and down walks, directly
Former design stake bottom absolute altitude is synchronously pressed onto to static pressure to inside and outside steel pipe, stake end forms first time auxiliary material base expanding and base expanding, then according to design
It is required that carry out secondary batching, feed intake for three times, all-hydraulic static pressure base expanding and base expanding is through multiple auxiliary material base expanding and base expanding；
4）According to design and test pile result, with reference to last time static pressure base expanding and base expanding maximum pressure value, reached end resistance is met
To design requirement；
5）Inner tube is extracted, 0.2-0.3M3 is added, the slump is the concrete of the C30-C50 of 3-6cm, by that analogy, repeatedly complete
Hydraulic static companding bottom, final hydraulic control indoor static pressure, when pressure value meets design requirement untill, otherwise repeatedly said procedure,
Until meeting design load single pile requirement；
6）, extract inner tube decentralization steel reinforcement cage：Inner tube is extracted, steel reinforcement cage is disposed, hangs muscle is welded in steel reinforcement cage upper end, use steel wire
Rope is connected with inner tube and steel reinforcement cage, it is ensured that steel reinforcement cage is in the middle of vertical hanging pipe in outer tube, while ensuring that steel reinforcement cage bottom is being expanded
In major part between 0.5-1 meters；
7）, concrete perfusion pull out outer tube：Place and irrigate immediately after steel reinforcement cage concrete, concrete slump control 8-10cm it
Between；It is pressed in the outer tube for having filled concrete using inner tube own wt after filling concrete, it is ensured that the packing of concrete, is then turned on jacking oil
Cylinder system starts tube drawing, until outer tube extracts ground 15-25cm, cuts steel reinforcement cage hanging steel bar, forms a complete club-footed pile.
Non- Squeezing Soil Pile construction procedure is to increase the dry step that fetches earth before soil compaction pile construction method step is implemented, using two-tube
The dry step that fetches earth is：
Flap valve opening drawing out soil equipment is set in inner tube bottom, inner and outer pipe superposition is nested together, with diesel hammer by inner tube with
Outer tube synchronously bury by impact, can not be opened downwards because the flap valve that fetches earth of flap valve opening drawing out soil equipment can only close up upwards,
During burying, the outside soil flap valve that will fetch earth is squeezed upwards, and soil constantly enters in inner tube；Inner and outer tubes are often buried 4-6m
Extract inner tube to fetch earth once, during inner tube is extracted, the flap valve that fetches earth lives the grave in inner tube；Inner tube pulls away outer tube completely
Afterwards, strike inner tube fetches earth end socket steel plate downwards, and the drive flap valve that fetches earth is downward so that the flap valve that fetches earth depart from bottom of the tube, in inner tube
Soil be freely scattered；
According to stake it is long inner tube aligned with geological condition at any time extract unload native number of times, until base expanding and base expanding end is fetched earth completion, reach
Projected depth.
The all-hydraulic two-tube compound club-footed pile geological conditions of static pressure is：Silt, flour sand, supporting course thickness must not be less than three meters,
Supporting course earth bearing strength is more than 16T/m3, static pressure base expanding and base expanding auxiliary material uses rubble, concrete block or the block brick of 15-30cm, according to design
The requirement of bearing capacity of single pile, it is determined that the quantity and number of times of filling static pressure base expanding and base expanding auxiliary material, according to the gross weight of static pressure equipment, selection is most
Static pressure oil pressure tabular value conversion press-in static pressure afterwards, and align on inner and outer pipe degree of lifting and determine bellout diameter, it is ensured that static pressure auxiliary material
Design load, i.e. test pile test value reference value are not less than through the end resistance after static pressure base expanding and base expanding, wanting for design bearing capacity is can be only achieved
Ask；Multiple tracks triangle protection muscle is welded with steel reinforcement cage.
Patent of the present invention is the noiselessness, without friction, free of contamination extended on the basis of " strong rammer vibration compound club-footed pile "
Construction, technique is the process innovation again of the hammering two-tube compound bottom-enlarging filling pile of vibration, of the invention by clip pile system system
Cause upper and lower two sets of pile clamping boxes, effective travel 3-5 meters, bottom pile clamping box clamping outer tube, top pile clamping box can not only clamp outer tube but also
Inner tube can be clamped, presses to form base expanding and base expanding effect using inner tube.Or, using top pressure transverse beam system square back-pressure inner tube on inner pipe,
Form base expanding and base expanding effect.
The present invention, using rubble, concrete block or brickbat static(al) reinforcing pile end bearing stratum, is to solve stake at present to support power
There is meagre soft interlayer in layer and supporting course moisture content is high and influence one of bearing capacity of single pile most efficient method.Applied using pile tube
The same bearing capacity of single pile of work, stake is long, and all at 30-45 meters or so, overall cost will improve 40% or so, using this construction technology than former
The cast-in-situ bored pile for coming wants saving construction cost 20-35% or so, is a kind of cheap and good-quality new pile-type, new technology.
Brief description of the drawings
Fig. 1 is structural representation of the two-tube compound club-footed pile machine of all-hydraulic static pressure of the invention using top pressure transverse beam system structure
Figure.
Fig. 2 is compound double pipe structure schematic diagram of the present invention.
Fig. 3 is the all-hydraulic two-tube compound club-footed pile double fastener stake box structure schematic diagram of the present invention.
Specific embodiment
Embodiment 1
A kind of two-tube compound club-footed pile machine of all-hydraulic static pressure, as shown in figure 1, including clip pile system 10 and being lifted on clip pile system
Multiple tube 20 in system, as shown in Fig. 2 the multiple tube includes inner tube 1 and outer tube 2, said inner tube is sleeved on outer tube, interior
Pipe external diameter be less than more than outer tube diameter 5cm, inner tube 10-20cm shorter than outer tube, inner tube upper seal steel plate with diameter greater than outer tube outside
Footpath 2-3cm, and fixed using coupling arrangement 3 on inner and outer pipes top；Outer tube thickness of steel pipe must not be less than 2cm；
As shown in figure 1, the clip pile system includes a lower pile clamping box 10, lower clip pile upper box part is provided with a clear height 2
The clamp support 4 of rice, piling stroke is 3-4 meters, and top pressure transverse beam system 5, the top pressure transverse beam system are provided with clamp support
Square top pressure inner tube on inner pipe, the top pressure transverse beam system square back-pressure inner tube on inner pipe, forms base expanding and base expanding effect.
Embodiment 2
As shown in figure 3, the clip pile system is made up of upper pile clamping box 30 and lower pile clamping box 10, upper and lower two sets of pile clamping boxes have
3-5 meters of stroke of effect, lower pile clamping box clamps outer tube, and upper pile clamping box can not only clamp outer tube but also can clamp inner tube, using inner tube pressure shape
Into base expanding and base expanding effect.In Fig. 3,20 is compound two-tube, and 10 is lower pile clamping box, and 30 is upper pile clamping box, and 40 is pile clamping box stroke track.
Embodiment 3
An inner tube set in outer tube during construction（Inner tube external diameter is necessarily less than more than outer tube diameter 5cm）, inner tube ratio
The short 10-20cm of outer tube, when being buried with profit, acts on as native plug, prevents underground water from pouring in outer tube, inner tube upper seal steel plate diameter
More than outer tube external diameter 2-3cm, and fixed using coupling arrangement on inner and outer pipes top.Using random crane or outside crawler crane handle
One be connected and fixed inside and outside two-tube hang in pile clamping box.It is inside and outside it is two-tube it is high 0.5 meter with ground surface soil when, general 8 in pile clamping box
Individual clamping fuel tank, at most also starts to clamp work, outer tube with 20 clamping oil cylinders（Thickness of steel pipe must not be less than 2cm）Embrace jail,
Stake machine flatness is adjusted followed by hydraulic traveling mechanism, with total powerstation, the two-way correction inner and outer pipes perpendicularity of theodolite, it is ensured that hang down
Directly spend within code requirement.1. opens pressure pipe top cylinder system, ensures inner and outer pipes by 2-4 meters of speed of each stroke
It is pressed onto designed elevation.2. releases inner and outer pipes top coupling arrangement, inner sleeve is extracted using random crane or crawler crane outer
Set, then pours into height for H=2-2.5 meters of 0.25-0.3m in outer tube3, the stone of particle diameter 15-30cm, concrete block and fragment of brick.
3. be put into interior effective loop wheel machine in outer tube and fasten input material by, and steel outer tube is embraced in subsequent clip pile system work, and jacking cylinder system is opened
Beginning work, pulling out 1-1.5 meters on outer tube（By design requirement）, stop jacking apparatus work, release grasping system work, clamping oil
Cylinder replys internal, about 1.8 meters of a stroke while jacking cylinder system is up walked, and then reply is fallen piling bottom portion and started
Second stroke reaches inside top, and subsequent grasping system work, clamping oil cylinder clips inner tube top steel pipe and down walks, until quiet
It is depressed into inside and outside steel pipe and is synchronously pressed onto former design stake bottom absolute altitude, stake end forms first time auxiliary material base expanding and base expanding, then according to design requirement
Secondary batching is carried out, is fed intake for three times, all-hydraulic static pressure base expanding and base expanding is through multiple auxiliary material base expanding and base expanding.4. according to design and test pile result, with reference to
Last time static pressure base expanding and base expanding maximum pressure value, design requirement is reached end resistance is met.5. extracts inner tube, adds 0.2-
0.3m3, the slump is the concrete of the C30-C50 of 3-6cm, by that analogy, multiple all-hydraulic static pressure base expanding and base expanding, final hydraulic control room
Interior static pressure, when pressure value meets design requirement untill, otherwise repeatedly said procedure, until meeting design load single pile requirement.⑥、
Extract inner tube decentralization steel reinforcement cage：Extract inner tube, dispose steel reinforcement cage, hangs muscle is welded in steel reinforcement cage upper end, with steel wire rope and inner tube and
Steel reinforcement cage is connected, it is ensured that steel reinforcement cage is in the middle of vertical hanging pipe in outer tube, while ensuring steel reinforcement cage bottom 0.5-1 in enlarged footing
Between rice；7., concrete perfusion pulls out outer tube：Concrete is irrigated immediately after placing steel reinforcement cage, and concrete slump is controlled between 8-10cm；
It is pressed in the outer tube for having filled concrete using inner tube own wt after filling concrete, it is ensured that the packing of concrete, is then turned on jacking cylinder
System starts tube drawing, until outer tube extracts ground 15-25cm, cuts steel reinforcement cage hanging steel bar, forms a complete club-footed pile.
Secondly：Due to make full use of former pile compacting equipment（200 tons -1200 tons）Before cost of investment is reduced as far as possible
Put, my company increases the column of 2 meters of clear height in former clip pile upper box part, and transverse beam system is set at the top of it（Due to original clamping system
System only possesses a set of grasping system, inadequate to inner tube base expanding and base expanding stroke）, after inner and outer pipe is pressed onto designed elevation simultaneously, extract internal pressure
Pipe, irrigates base expanding and base expanding auxiliary material and base expanding and base expanding concrete, and subsequent inner tube resets, and 1-1.5 meters is pulled out on clamping outer tube, and outer tube grasping system unclamps, folder
It is spacing that stake case jack-up system rises to highest, at the top of subsequent upper beam system reset to interior pressure pipe, subsequent pile clamping box jacking system
System is down walked, and drives crossbeam to push down inner tube, forms base expanding and base expanding technique, by that analogy, completes the round program of auxiliary material and concrete base expanding and base expanding
Pile（NM other techniques, are carried out with reference to two sets of new grasping system techniques）.
Non- Squeezing Soil Pile construction procedure is to increase the dry step that fetches earth before soil compaction pile construction method step is implemented, using two-tube
The dry step that fetches earth is：
Flap valve opening drawing out soil equipment is set in inner tube bottom, inner and outer pipe superposition is nested together, with diesel hammer by inner tube with
Outer tube synchronously bury by impact, can not be opened downwards because the flap valve that fetches earth of flap valve opening drawing out soil equipment can only close up upwards,
During burying, the outside soil flap valve that will fetch earth is squeezed upwards, and soil constantly enters in inner tube；Inner and outer tubes are often buried 4-6m
Extract inner tube to fetch earth once, during inner tube is extracted, the flap valve that fetches earth lives the grave in inner tube；Inner tube pulls away outer tube completely
Afterwards, strike inner tube fetches earth end socket steel plate downwards, and the drive flap valve that fetches earth is downward so that the flap valve that fetches earth depart from bottom of the tube, in inner tube
Soil be freely scattered；
According to stake it is long inner tube aligned with geological condition at any time extract unload native number of times, until base expanding and base expanding end is fetched earth completion, reach
Projected depth.
Inner tube external diameter is less than outer tube diameter 5cm.
The all-hydraulic two-tube compound club-footed pile geological conditions of static pressure is：Silt, flour sand, supporting course thickness must not be less than three meters,
Supporting course earth bearing strength is more than 16T/m3, static pressure base expanding and base expanding auxiliary material uses rubble, concrete block or the block brick of 15-30cm, according to design
The requirement of bearing capacity of single pile, it is determined that the quantity and number of times of filling static pressure base expanding and base expanding auxiliary material, according to the gross weight of static pressure equipment, selection is most
Static pressure oil pressure tabular value conversion press-in static pressure afterwards, and align on inner and outer pipe degree of lifting and determine bellout diameter, it is ensured that static pressure auxiliary material
Design load is not less than through the end resistance after static pressure base expanding and base expanding（Test pile test value reference value）, can be only achieved wanting for design bearing capacity
Ask.Multiple tracks triangle protection muscle is welded with steel reinforcement cage.
Patent of the present invention is the noiselessness, without friction, free of contamination extended on the basis of " strong rammer vibration compound club-footed pile "
Construction, technique is process innovation again of the hammering two-tube compound bottom-enlarging filling pile of vibration, using rubble, concrete block or
Brickbat static(al) reinforcing pile end bearing stratum, is to solve there is meagre soft interlayer and supporting course moisture content is high in bearing course at pile end at present
And influence one of bearing capacity of single pile most efficient method.Using the same bearing capacity of single pile of tube pile construction, stake is long all left at 30-45 meters
The right side, overall cost will improve 40% or so, want saving construction cost 20-35% left than original cast-in-situ bored pile using this construction technology
The right side, is a kind of cheap and good-quality new pile-type, new technology.
The all-hydraulic two-tube compound club-footed pile machine of static pressure of the present invention and construction method set Group Co., Ltd " strong by building capital construction
The compound club-footed pile of the rammer vibration " patent No. is ZL2013100569681：（Jiangsu Province's house and the assessment of result of the town and country construction Room are changed to：
" the two-tube compound bottom-enlarging filling pile technology of hammering vibration "）On the basis of develop another without friction, noiselessness of growth, pollution-free
Construction machinery and construction technology.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to implementation method.For those of ordinary skill in the field, can also do on the basis of the above description
Go out the change or variation of other multi-forms.There is no need and unable to be exhaustive to all of implementation method.And thus drawn
Obvious change that Shen goes out or among changing still in protection scope of the present invention.
Claims (1)
1. the two-tube compound pedestal pile constructing process of a kind of all-hydraulic static pressure, it is characterised in that：All-hydraulic static pressure used by construction method
Two-tube compound club-footed pile machine, including clip pile system and be lifted on it is compound two-tube in clip pile system, it is described be combined it is two-tube including interior
Pipe and outer tube, said inner tube are sleeved on outer tube, and inner tube external diameter is less than outer tube diameter 5cm, inner tube 10-20cm shorter than outer tube,
Inner tube upper seal steel plate is fixed on inner and outer pipes top with diameter greater than outer tube external diameter 2-3cm using coupling arrangement；Outer tube steel pipe
Wall thickness must not be less than 2cm；The clip pile system is made up of upper pile clamping box and lower pile clamping box, upper and lower two sets of pile clamping box effective travels
3-5 meters, lower pile clamping box clamps outer tube, and upper pile clamping box can not only clamp outer tube but also can clamp inner tube, and press to form base expanding and base expanding using inner tube
Effect；
Methods described is specifically included, by one be connected and fixed inside and outside it is two-tube hang in lower pile clamping box, it is inside and outside it is two-tube above Ground
When table is native 0.5 meter, clamping oil cylinder starts to clamp work in lower pile clamping box, and outer tube armful is firm, is adjusted followed by hydraulic traveling mechanism
Whole stake machine flatness, with total powerstation and the two-way correction inner and outer pipes perpendicularity of theodolite, it is ensured that perpendicularity is within code requirement；
1）Jacking cylinder system is opened, ensures for inner and outer pipes to be pressed onto designed elevation by 2-4 meters of height of each stroke；
2）Inner and outer pipes top coupling arrangement is released, inner tube is extracted into outer tube using random crane or crawler crane, filled in outer tube
Enter 0.25-0.3m3Input material, input material height is H=2-2.5 meter, and input material is the stone of particle diameter 15-30cm, concrete block and brick
Block；
3）Interior effective loop wheel machine is put into outer tube and fastens input material, outer tube, jacking are embraced in then upper pile clamping box grasping system work
Cylinder system is started working, and 1-1.5 meters will be pulled out on outer tube by design requirement, stops the work of jacking cylinder system, is pressed from both sides in releasing
The grasping system work of stake case, 1.8 meters of a stroke while jacking cylinder system is up walked, upper pile clamping box bottom reaches inner tube
Top starts the second stroke, then upper pile clamping box grasping system work, and clamping oil cylinder clips inner tube top steel pipe and down walks, directly
Former design stake bottom absolute altitude is synchronously pressed onto to static pressure to inside and outside steel pipe, stake end forms first time auxiliary material base expanding and base expanding, then according to design
It is required that carry out secondary batching, feed intake for three times, all-hydraulic static pressure base expanding and base expanding is through multiple auxiliary material base expanding and base expanding；
4）According to design and test pile result, with reference to last time static pressure base expanding and base expanding maximum pressure value, meet end resistance and reach design
It is required that；
5）Inner tube is extracted, 0.2-0.3m is added3, the slump is the concrete of the C30-C50 of 3-6cm, by that analogy, repeatedly all-hydraulic quiet
Companding bottom, when final hydraulic control pressure value meets design requirement untill, otherwise repeatedly said procedure, until meeting design load
Single pile requirement；
6）Extract inner tube decentralization steel reinforcement cage：Extract inner tube, dispose steel reinforcement cage, steel reinforcement cage upper end weld hangs muscle, with steel wire rope with
Inner tube and steel reinforcement cage are connected, it is ensured that steel reinforcement cage is in the middle of vertical hanging pipe in outer tube, while ensuring steel reinforcement cage bottom in enlarged footing
Between interior 0.5-1 meters；
7）Concrete perfusion pulls out outer tube：Concrete is irrigated immediately after placing steel reinforcement cage, and concrete slump is controlled between 8-10cm；Fill
It is pressed in the outer tube for having filled concrete using inner tube own wt after concrete, it is ensured that the packing of concrete, is then turned on jacking cylinder system
Start tube drawing, until outer tube extracts ground 15-25cm, cut steel reinforcement cage hanging steel bar, form a complete club-footed pile；
Non- Squeezing Soil Pile construction procedure is to increase the dry step that fetches earth before soil compaction pile construction method step is implemented, and dry is taken using two-tube
Native step is：
Flap valve opening drawing out soil equipment is set in inner tube bottom, inner and outer pipe superposition is nested together, with diesel hammer by inner tube and outer tube
Synchronous impact is buried, and can not be opened downwards because the flap valve that fetches earth of flap valve opening drawing out soil equipment can only close up upwards, is being buried
During, the outside soil flap valve that will fetch earth is squeezed upwards, and soil constantly enters in inner tube；Inner and outer tubes often bury 4-6m extraction
Inner tube fetches earth once, and during inner tube is extracted, the flap valve that fetches earth lives the grave in inner tube；After inner tube pulls away outer tube completely,
Strike inner tube fetches earth end socket steel plate downwards, and the drive flap valve that fetches earth is downward so that the flap valve that fetches earth depart from bottom of the tube, the soil in inner tube
Freely it is scattered；
According to stake it is long inner tube adjusted with geological condition at any time extract unload native number of times, until base expanding and base expanding end is fetched earth completion, reach design
Depth；
The all-hydraulic two-tube compound club-footed pile geological conditions of static pressure is：Silt, flour sand, supporting course thickness must not be less than three meters, holding force
Layer earth bearing strength is more than 16T/m3, static pressure base expanding and base expanding auxiliary material uses rubble, concrete block or the block brick of 15-30cm, according to design single pile
The requirement of bearing capacity, it is determined that the quantity and number of times of filling static pressure base expanding and base expanding auxiliary material, according to the gross weight of static pressure equipment, selection is last quiet
Force feed pressure tabular value conversion press-in static pressure, and adjust on inner and outer pipe degree of lifting and determine bellout diameter, it is ensured that static pressure auxiliary material is through quiet
End resistance behind companding bottom is not less than design load, i.e. test pile test value reference value, can be only achieved the requirement of design bearing capacity；Steel
Multiple tracks triangle protection muscle is welded with muscle cage.
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| CN105926594A (en) * | 2016-04-29 | 2016-09-07 | 朱龙 | Double-pipe construction method for static pressure pipe-sinking carrier cast-in-place pile |
| CN106400774A (en) * | 2016-08-30 | 2017-02-15 | 中铁十九局集团矿业投资有限公司 | Construction method and device for strengthening soft foundation |
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| CN2599074Y (en) * | 2002-12-26 | 2004-01-14 | 长沙天和工程机械有限公司 | Environmental protection type contract press top press dual purpose hydraulic static pole press machine |
| JP4831511B2 (en) * | 2006-04-19 | 2011-12-07 | 三谷セキサン株式会社 | Construction method of foundation pile |
| CN201665873U (en) * | 2010-03-21 | 2010-12-08 | 周立强 | Static pile-pressing machine of double pile-pressing system |
| CN103114579B (en) * | 2013-02-22 | 2015-01-07 | 建基建设集团有限公司 | Dynamic compaction vibration compound base-expanded pile machine and construction method of dynamic compaction vibration compound base-expanded pile |
| CN204703152U (en) * | 2015-06-16 | 2015-10-14 | 建基建设集团有限公司 | All-hydraulic static pressure two-tube compound expanded bore pile machine |
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