CN104532842B - A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method - Google Patents
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method Download PDFInfo
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- CN104532842B CN104532842B CN201510045863.5A CN201510045863A CN104532842B CN 104532842 B CN104532842 B CN 104532842B CN 201510045863 A CN201510045863 A CN 201510045863A CN 104532842 B CN104532842 B CN 104532842B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
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Abstract
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, belongs to the technical field of building construction technology.Technological process is as follows: visit look for stake position → equipment Ground arrangement and machinery, power system, background job command system location → equipment and Accessory Members in place → sleeve pipe convolution press-in → tunneling boring convolution twists off → captures soil around pile, pulls off stake → broken pile handling process → segmentation and take stake to depth of implements → pull out the native operation → main engine bed alignment pin of sleeve pipe → backfill and remove → ferry construction.Construction method of the present invention is simple, easy to operate, and compared with other clear stake mode, its efficiency is high, and owing to using hydrostatic drive, does not produce vibration, and the most whole work progress does not produce very noisy；Applicability is good, the most applicable to prefabricated pile, bored concrete pile, and whole work progress uses dry type bucket boring process, polluting without mud emission etc., environmental protection is clean and tidy, additionally uses sleeve pipe retaining wall, soil is backfilled in time, it is entirely avoided the sedimentation of neighbouring ground, security performance is good after pulling out old stake.
Description
Technical field
The invention belongs to the technical field of building construction technology, be specifically related to a kind of sleeve pipe revolution friction-type cutting-off method pile pulling
Construction method.
Background technology
Pulling out of the path stake such as prefabricated pile, hidden pipe pile, is no lack of in area, Jiangsu and Zhejiang Provinces and has successful experience, mainly uses stake soil
The mode separating reduction stake week frictional resistance pulls out old stake.But for the bored concrete pile that the diameter under complex environment and the degree of depth are bigger
Removing for engineering, referential successful examples is little, and main cause one is that involved clear stake engineering mostly is pile foundation in early days and leaves over work
Journey, mostly based on the less hidden pipe pile in stake footpath and prefabricated pile, larger-diameter bored concrete pile relates to less, and two is old pulling out
Mode be difficult to expanding, have strict control etc. from the less space environment of building clear distance, noise under the conditions of realize the mesh removed
's.
Sleeve pipe revolution this mode of friction-type cutting-off method uses powerful plant equipment, is rubbed with stake soil by sleeve pipe convolution
Wiping the mode of the conduction moment of torsion produced, the old stake of removing is blocked in segmentation.This clear stake mode is to the size of pile body and degree of depth susceptibility
Relatively low, especially for the bored concrete pile of major diameter, the efficiency of pile pulling is greatly increased, hence it is evident that shorten the time removed obstacles in underground,
It is beneficial to the control of noise simultaneously, decreases the dispute with nearby residents, be especially suitable for the clear stake of the old stake of major diameter under complex environment
Operation.
Summary of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to provide a kind of sleeve pipe revolution friction-type and divide
The construction method of disconnected method pile pulling.It utilizes stake week outer layer soil to circle round, by the powerful rotary torque of rig with the common of rig sleeve pipe
Conducted to pile body by pile peripheral earth frictional resistance, and then twist off pile body, then use hammer grab and cable wire to take out in sleeve
Soil and broken pile, reach to remove the purpose of old stake.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that technological process is as follows: visit
Look for stake position → equipment Ground arrangement in place with machinery, power system, background job command system location → equipment and Accessory Members
Convolution press-in → tunneling boring the convolution of → sleeve pipe twists off → captures soil around pile, pulls off stake → broken pile handling process → segmentation and take stake extremely
Depth of implements → rise pulls out the native operation → main engine bed alignment pin of sleeve pipe → backfill and removes → ferry construction.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that specifically comprise the following steps that
1) stake position is looked in spy: carry out mark according to original piling foundation plan setting-out, determines old stake Position Approximate to be pulled out, and uses machine
Tool or hand excavation find out pile crown near stake top；
2) equipment Ground arrangement and machinery, power system, background job command system location
According to old stake position of sound production fixing steel plate, when fixing steel plate is laid, certain distance should be deviateed with old pile head, it is simple to
Old stake is more easy to realization and twists off；
3) equipment and Accessory Members in place lay rig, hydraulic power unit, reaction torque lock and sleeve；
4) the sleeve pipe pipe clamping device gripping sleeve utilized on rig in place carries out the work in place of sleeve pipe, more piece sleeve pipe it
Between be bolted, reach old pile length to more piece sleeve pipe overall length；
5) sleeve pipe convolution press-in utilizes the power source that hydraulic pump provides, and is turned round down by rig and presses, arrives target location；
6) tunneling boring convolution twists off
Reach to block the target location of old stake at sleeve pipe after, whole revolution sleeve pipe, utilize the torque level of revoling tube to cut
Disconnected original stake；
7) rise pull off stake and capture soil around pile
Observing rig instrument readings, when display load torque is substantially reduced, shut down, the soil layer that pile crown covers first is used
Grab bucket catches, and excavated by manual work is sent as an envoy to the exposed at least 200mm of pile crown, directly takes out broken pile with grab bucket promptly pile crown, or is locked by cable wire
Pile crown, then hangs out broken pile with crawler crane；
8) broken pile handling process, segmentation take stake to depth of implements
Broken pile segmentation in this joint sleeve pipe is taken out, after first paragraph cuts, then connects second section sleeve pipe with bolt is fixing, continue
Continuous convolution press-in, repeats above-mentioned rupturing operation, until taking out remaining whole old stake；
9) rise pull out sleeve pipe, backfill soil operation
After clear stake completes, rig convolution promotes, and segmentation rises pulls out sleeve pipe；
10) main engine bed alignment pin remove, ferry construction
After one old stake is pulled out, reorientating, pile pulling device moves to next stake ferry construction, until completing place
Interior all pile pulling tasks.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that equipment and attached in step 3)
Metal elements step in place is as follows:
1) lay rig, four supporting legs of rig be all placed into step 2) four basic points of fixing steel plate on, and pass through
The vertical monitoring system of rig or theodolite determine the perpendicularity of rig, make rig lay water by adjusting four support oil cylinders
Flat；
2) hydraulic power unit is in place, and is connected with the hydraulic system on rig, checks, has debugged equipment, and guarantees that each is
Unite working properly；
3) installing reaction torque lock, described reaction torque lock is placed in rig side, and reaction torque lock is used away from one end of rig
The crawler belt dieback of crawler crane or excavator, in case rig band carries the counter-force produced when rotated and causes drilling machine master to rotate；
4) sleeve is made up of at least two sleeve connection, and the sleeve of bottommost is 2m, and cutter tooth is installed in this sleeve lower end, and
The length sleeve that bottom sleeves connects is 4m or 6m, and sleeve is placed into rig, and the sleeve pipe used by the present invention is thickness 48mm's
Steel tub structure, some joints that the depth profile point length crept into as required is different, the casing length used by this engineering has:
2m, 4m, 6m tri-kinds, bottommost one saves length and is generally 2m and arranges cutter tooth at the mouth of pipe, and the centre of other sleeve pipes is ladle body, two
For telescopiform joint, joint sets screw and shear connector, and two adjacent sections connects transmission load by bolt and shear connector.Casing main body material
Matter is 16Mn steel, and two end interface materials are 24Mn steel, and set tube wall divides three layers, and inside and outside two-layer is respectively the steel plate of 20mm, intermediate layer
Steel mesh sheet for 8mm.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that the sleeve of described sleeve is straight
The footpath at least clear old big 500mm of stake diameter than treating.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that step 4) sleeve pipe convolution pressure
Enter step as follows:
1) starting hydraulic power unit, by the rotating speed of engine from low to high, rig rotary fluid motor is adjusted to 0, starts and bores
Clamping cylinder button on machine, makes rig clamp system gripping sleeve, starts gyroscopic drive system and carries out test running, and revises vertical
Straight degree；
2) start formally to creep into, engine height rotating speed, the rig slow-speed of revolution, after pressure, moment of torsion are stable, adjust rotating speed and contraction
Support oil cylinder creeps into；
3) often clamping cylinder put into by joint sleeve pipe, shrinks clamp hydraulic cylinder, utilizes rig and guide deviation-correcting device to adjust sleeve pipe
Perpendicularity, drilling process utilizes level monitoring system test sleeve pipe perpendicularity at any time, often joint sleeve pipe connects and checks vertical
After straight degree, make sleeve pipe carry out the rotation of a more than circle by the slewing equipment of full-rotating drill, reduce the friction of sleeve pipe and the soil body
Resistance, and utilize cutter tooth cutting soil or the barrier of cannula tip immediately, in press-in soil, start normal operation.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that step 2) in creep into initial
In 5 meters, rig rotating speed is 3 ~ 5 revs/min, and rotation torque is the 30% ~ 50% of nominal maximum torque.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that after sleeve pipe is in place, past
Putting between sleeve pipe and old stake after going forward side by side underground layer against hammer, then carry out sleeve pipe convolution press-in, described is wedge against hammer tip portion
Shape, pulls off stake rising and captures before soil around pile taking out against hammer.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that described inserts against hammer
Being located proximate to nearly stake point, nearly stake point of the present invention refers to: owing to pile center deviates with fixing steel plate center, causes positioning steel
Plate endoporus edge is different from the spacing of stake periphery, and what fixing steel plate endoporus edge was the shortest with stake periphery distance is referred to as nearly stake point.
Described a kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, it is characterised in that described old stake includes pre-
Stake processed and bored concrete pile, prefabricated pile uses the sleeve pipe of diameter 1m, and bored concrete pile uses the sleeve pipe of diameter 1.5m or 2.0m.
The present invention, by using above-mentioned technology, has the advantages that
1) present invention carries out the removing of prefabricated pile and fender post by the sleeve pipe selecting external diameter to be 1m, 1.5m, 2m, on the one hand
The moment of torsion and the pressing-in force that are thered is provided by top drive pass to cutter head；On the other hand during creeping into, also act as a guard aperture
Wall, prevents hole wall collapse；
2) present invention will arrange certain bias between fixing steel plate and position, old pile center hole, and eccentric throw regards stake footpath and sleeve pipe
Diameter depending on, generally, nearly stake point and sleeve pipe void pitch are that about 200mm is advisable, then are pressed into sleeve pipe, have as follows
Effect: a eccentric rotary sleeve pipe causes stake week unbalance stress, broken pile is more easy to realize；The old stake of b bias generation is with the space of sleeve pipe more
It is beneficial to grab bucket in sleeve pipe, captures the soil body；C bias is easy to effectively be resisted against between sleeve pipe and old stake against hammer, increases stake week frictional resistance
Power；
3) present invention is after sleeve pipe is in place, after putting between sleeve pipe and old stake and going forward side by side underground layer against hammer, then overlaps
Pipe convolution press-in, should be wedge shape against hammer tip portion, in the soil layer that soil property is poor, can sink in sleeve pipe against hammer gravity；
4) construction method of the present invention is simple, easy to operate, and compared with other clear stake mode, its efficiency is high, and owing to adopting
By hydrostatic drive, not producing vibration, the most whole work progress does not produce very noisy；Applicability is good, to prefabricated pile, bored concrete pile
The most applicable, whole work progress uses dry type bucket boring process, pollutes without mud emission etc., and environmental protection is clean and tidy, additionally uses set to manage and protect
Wall, backfills soil in time after pulling out old stake, it is entirely avoided the sedimentation of neighbouring ground, security performance is good.
Detailed description of the invention
Hereinafter the construction method of the present invention is further described, but protection scope of the present invention is not limited to that:
The present invention a kind of sleeve pipe revolution friction-type cutting-off method pile pulling pile-pulling construction method, described stake include prefabricated pile and
Bored concrete pile, prefabricated pile uses the sleeve pipe of diameter 1m, and bored concrete pile uses the sleeve pipe of diameter 1.5m or 2.0m, specifically comprises the following steps that
1) stake position is looked in spy: carry out mark according to original piling foundation plan setting-out, determines old stake Position Approximate to be pulled out, and uses machine
Tool or hand excavation find out pile crown near stake top；
2) equipment Ground arrangement and machinery, power system, background job command system location
According to old stake position of sound production fixing steel plate, when fixing steel plate is laid, certain distance should be deviateed with old pile head, it is simple to
Old stake is more easy to realization and twists off, and eccentric throw is depending on the diameter of stake footpath and sleeve pipe, generally, and nearly stake point and sleeve pipe void pitch
It is advisable for about 200mm, preferably 200mm；
3) equipment and Accessory Members are in place, specifically comprise the following steps that
A lays rig, and four supporting legs of rig are all placed into step 2) four basic points of fixing steel plate on, and by bore
The vertical monitoring system of machine or theodolite determine the perpendicularity of rig, make rig lay level by adjusting four support oil cylinders；
B hydraulic power unit is in place, and is connected with the hydraulic system on rig, checks, has debugged equipment, and guarantees each system
Working properly；
C installs reaction torque lock, and described reaction torque lock is placed in rig side, and reaction torque lock is carried out away from one end of rig
Band hangs or the crawler belt dieback of excavator, in case rig band carries the counter-force produced when rotated and causes drilling machine master to rotate；
D sleeve is made up of at least two sleeve connection, and the sleeve of bottommost is 2m, and cutter tooth is installed in this sleeve lower end, and
The length sleeve that bottom sleeves connects is 4m or 6m, and sleeve is placed into rig, and the sleeve diameter of described sleeve is at least clear than treating
The old big 500mm of stake diameter；
4) the sleeve pipe pipe clamping device gripping sleeve utilized on rig in place carries out the work in place of sleeve pipe, more piece sleeve pipe it
Between be bolted, reach old pile length to more piece sleeve pipe overall length；The present invention according to actual needs, after sleeve pipe is in place, can
Put between sleeve pipe and old stake after going forward side by side underground layer against hammer in the past, then carried out sleeve pipe convolution press-in, described against hammer tip portion
For wedge shape, rise pull off stake and capture soil around pile before taking out against hammer, against hammer implantation site near nearly stake point；
5) sleeve pipe convolution press-in utilizes the power source that hydraulic pump provides, and is turned round down by rig and presses, arrives target location,
Sleeve pipe convolution press-in step is as follows:
A starts hydraulic power unit, and by the rotating speed of engine from low to high, rig rotary fluid motor is adjusted to 0, starts rig
On clamping cylinder button, make rig clamp system gripping sleeve, start gyroscopic drive system and carry out at the beginning of test running, rotary motor
Beginning starts must be run in the slow-speed of revolution, is i.e. adjusted near the deep low gear of speed regulator, when steering resistance is stablized and is less than setting value, and side
Can heighten rotating speed in right amount, this is fixed according to actual conditions, is typically adjusted to the centre position of speed regulator, and revises perpendicularity；
B starts formally to creep into, and engine height rotating speed (is i.e. adjusted toward minimum speed from maximal rate on speed regulator), low turn of rig
Speed (i.e. minimum speed on speed regulator), pressure, moment of torsion adjust rotating speed after the most no longer changing and contraction support oil cylinder bores
Entering, described creeps in initial 5 meters, and rig rotating speed is 3 ~ 5 revs/min, and rotation torque is the 30% ~ 50% of nominal maximum torque；
C often saves sleeve pipe and puts into clamping cylinder, shrinks clamp hydraulic cylinder, utilizes rig and guide deviation-correcting device to adjust sleeve pipe
Perpendicularity, utilizes level monitoring system test sleeve pipe perpendicularity at any time in drilling process, often joint sleeve pipe connects and checks vertically
After degree, make sleeve pipe carry out the rotation of a more than circle by the slewing equipment of full-rotating drill, reduce the friction resistance of sleeve pipe and the soil body
Power, and utilize cutter tooth cutting soil or the barrier of cannula tip immediately, in press-in soil, start normal operation；
6) tunneling boring convolution twists off
Reach to block the target location of old stake at sleeve pipe after, whole revolution sleeve pipe, utilize the torque level of revoling tube to cut
Disconnected original stake；
7) rise pull off stake and capture soil around pile
Observing rig instrument readings, when display load torque is substantially reduced, shut down, the soil layer that pile crown covers first is used
Grab bucket catches, and excavated by manual work is sent as an envoy to the exposed at least 200mm of pile crown, directly takes out broken pile with grab bucket promptly pile crown, or is locked by cable wire
Pile crown, then hangs out broken pile with crawler crane；
8) broken pile handling process, segmentation take stake to depth of implements
Broken pile segmentation in this joint sleeve pipe is taken out, after first paragraph cuts, then connects second section sleeve pipe with bolt is fixing, continue
Continuous convolution press-in, repeats above-mentioned rupturing operation, until taking out remaining whole old stake；
9) rise pull out sleeve pipe, backfill soil operation
After clear stake completes, rig convolution promotes, and segmentation rises pulls out sleeve pipe；
10) main engine bed alignment pin remove, ferry construction
After one old stake is pulled out, reorientating, pile pulling device moves to next stake ferry construction, until completing place
Interior all pile pulling tasks.
Owing to pile body has reinforcing bar, to realize twisting off pile body, the condition of two aspects must be met: 1. drilling equipment produces
Moment of torsion have to be larger than the opposing moment of torsion of pile body self；2. sleeve pipe and the soil body have enough frictional resistance, it is possible to passed by equipment moment of torsion
It is directed at pile body.
1) rig torsional performance checking computations
Choosing bored concrete pile maximum gauge during calculating is 2000mm, and reinforcing bar configuration is particularly as follows: indulge muscle 40 Φ 25(HRB400), hoop
Muscle Φ 14@200(HRB335) stake check, then pile body opposing moment of torsion be:
Pile body moment of torsion
A0The area that shear flow center line is surrounded, takes π (2000/2)2 =3.14×106mm2
AsThe most vertical muscle sectional area, table look-up to obtain 19636 mm2
AsvSingle limb area of section of stirrup, table look-up to obtain 153.9 mm2
fstkVertical tendon exhaustion limit strength standard value, table look-up to obtain 540N/ mm2
fstkvStirrup ultimate strength standard value, table look-up to obtain 455N/ mm2
u0The girth that shear flow center line is surrounded, π × 2000=6280mm
S stirrup spacing, takes 200mm
Less than the minimal torque 2950kN m of drill machine with casing, meet and use requirement.
2) sleeve pipe and soil body frictional resistance
When pile body diameter and arrangement of reinforcement are less, its opposing moment of torsion is the least, and typically directly revoling tube just can realize pile body steel
Muscle blocks, reaches the purpose that pile body separates.But for stake footpath and arrangement of reinforcement bigger time, auxiliary set up against hammer, be resisted against stake and set
Between pipe, it is to avoid the outer layer soil idle running of stake week is slided, and then realizes the purpose of broken pile.
Claims (5)
1. a sleeve pipe revolution friction-type cutting-off method pile-pulling construction method, technological process is as follows: visits and looks for stake position → equipment place cloth
Put → sleeve pipe convolution in place with machinery, power system, background job command system location → equipment and Accessory Members be pressed into → entirely
Section convolution twists off → captures soil around pile, rises and pull off stake → broken pile handling processs → segmentation and take stake to depth of implements → pull out sleeve pipe
→ ferry construction removed by → backfill soil operation → main engine bed alignment pin, it is characterised in that specifically comprise the following steps that
1) visit and look for stake position: carry out mark according to original piling foundation plan setting-out, determine old stake Position Approximate to be pulled out, use machinery or
Hand excavation finds out pile crown near stake top；
2) equipment Ground arrangement and machinery, power system, background job command system location
According to old stake position of sound production fixing steel plate, certain distance should be deviateed with old pile head when fixing steel plate is laid, it is simple to old stake
It is more easy to realization twist off；
3) equipment and Accessory Members in place lay rig, hydraulic power unit, reaction torque lock and sleeve, equipment and Accessory Members in place
Step is as follows:
A) lay rig, four supporting legs of rig be all placed into step 2) four basic points of fixing steel plate on, and pass through rig
Vertical monitoring system or theodolite determine the perpendicularity of rig, make rig lay level by adjusting four support oil cylinders；
B) hydraulic power unit is in place, and is connected with the hydraulic system on rig, checks, has debugged equipment, and guarantees each system work
Make normal；
C) installing reaction torque lock, described reaction torque lock is placed in rig side, and reaction torque lock is away from one end crawler belt of rig
Hang or the crawler belt dieback of excavator, in case rig band carries the counter-force produced when rotated and causes drilling machine master to rotate；
D) sleeve is made up of at least two sleeve connection, and the sleeve of bottommost is 2m, and cutter tooth is installed in this sleeve lower end, with bottommost
The length sleeve of sleeve connection is 4m or 6m, and sleeve is placed into rig, at least clear old stake than treating of the sleeve diameter of described sleeve
The big 500mm of diameter；
4) the sleeve pipe pipe clamping device gripping sleeve utilized on rig in place carries out the work in place of sleeve pipe, logical between more piece sleeve pipe
Crossing bolt to connect, reach old pile length to more piece sleeve pipe overall length, sleeve pipe convolution press-in step is as follows:
A) starting hydraulic power unit, by the rotating speed of engine from low to high, rig rotary fluid motor is adjusted to 0, starts on rig
Clamping cylinder button, make rig clamp system gripping sleeve, start gyroscopic drive system and carry out test running, and revise vertical
Degree；
B) start formally to creep into, engine height rotating speed, the rig slow-speed of revolution, adjust rotating speed after pressure, moment of torsion are stable and shrink supporting leg
Oil cylinder creeps into；
C) often clamping cylinder put into by joint sleeve pipe, shrinks clamp hydraulic cylinder, utilizes rig and guide deviation-correcting device to adjust hanging down of sleeve pipe
Straight degree, utilizes level monitoring system test sleeve pipe perpendicularity at any time in drilling process, often joint sleeve pipe connects and checks perpendicularity
After, make sleeve pipe carry out the rotation of a more than circle by the slewing equipment of full-rotating drill, reduce the frictional resistance of sleeve pipe and the soil body,
And utilize cutter tooth cutting soil or the barrier of cannula tip immediately, in press-in soil, start normal operation；
5) sleeve pipe convolution press-in utilizes the power source that hydraulic pump provides, and is turned round down by rig and presses, arrives target location；
6) tunneling boring convolution twists off
Reach to block the target location of old stake at sleeve pipe after, whole revolution sleeve pipe, utilize the torque level of revoling tube to block former
There is stake；
7) rise pull off stake and capture soil around pile
Observing rig instrument readings, when display load torque is substantially reduced, shut down, the soil layer that pile crown covers is first with grab bucket
Catching, excavated by manual work is sent as an envoy to the exposed at least 200mm of pile crown, directly takes out broken pile, or the pile crown that is locked by cable wire with grab bucket promptly pile crown,
Then broken pile is hung out with crawler crane；
8) broken pile handling process, segmentation take stake to depth of implements
Broken pile segmentation in this joint sleeve pipe is taken out, after first paragraph cuts, then connects second section sleeve pipe with bolt is fixing, continue back
Spinning enters, and repeats above-mentioned rupturing operation, until taking out remaining whole old stake；
9) rise pull out sleeve pipe, backfill soil operation
After clear stake completes, rig convolution promotes, and segmentation rises pulls out sleeve pipe；
10) after main engine bed alignment pin is removed, one old stake of ferry construction pulls out, reorientating, pile pulling device moves to next
Stake ferry construction, until all pile pulling tasks in completing place.
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method the most according to claim 1, it is characterised in that step
4) creeping in initial 5 meters in, rig rotating speed is 3 ~ 5 revs/min, and rotation torque is the 30% ~ 50% of nominal maximum torque.
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method the most according to claim 1, it is characterised in that described
Old stake include prefabricated pile and bored concrete pile, prefabricated pile uses the sleeve pipe of diameter 1m, and bored concrete pile uses the set of diameter 1.5m or 2.0m
Pipe.
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method the most according to claim 1, it is characterised in that at set
Manage in place after, after putting between sleeve pipe and old stake and going forward side by side underground layer against hammer, then carry out sleeve pipe convolution press-in, described against
Hammer tip portion is wedge shape, pulls off stake rising and captures before soil around pile taking out against hammer.
A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method the most according to claim 4, it is characterised in that described
Against hammer implantation site near nearly stake point.
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| CN201510045863.5A CN104532842B (en) | 2015-01-29 | 2015-01-29 | A kind of sleeve pipe revolution friction-type cutting-off method pile-pulling construction method |
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| CN105544544A (en) * | 2015-12-16 | 2016-05-04 | 上海市城市建设设计研究总院 | Method for quickly extracting pile under low clearance condition |
| CN108797591B (en) * | 2018-06-14 | 2023-09-12 | 宁波市政工程建设集团股份有限公司 | Sleeve rotary balance type pile pulling device and pile pulling method thereof |
| CN108517865B (en) * | 2018-06-14 | 2023-09-12 | 宁波市政工程建设集团股份有限公司 | Sleeve balance type pile cleaning device and pile cleaning method thereof |
| CN108746171A (en) * | 2018-08-14 | 2018-11-06 | 森特士兴集团股份有限公司 | A kind of contaminated site Ex-situ remediation method and its system based on cellular excavation |
| CN110805307A (en) * | 2019-10-31 | 2020-02-18 | 中铁二局集团有限公司 | Underground continuous wall removing method |
| CN111119180A (en) * | 2019-12-25 | 2020-05-08 | 中铁二局集团有限公司 | Underground pile foundation clearing construction method in complex environment |
| CN112962603A (en) * | 2021-02-05 | 2021-06-15 | 广州市第一市政工程有限公司 | Dismantling construction process for reinforced concrete cast-in-place pile |
| CN113529714B (en) * | 2021-07-17 | 2022-12-02 | 南京桥新建设有限公司 | Construction method for replacing old pile |
| CN115613577A (en) * | 2022-12-21 | 2023-01-17 | 中铁二十二局集团轨道工程有限公司 | Full-rotation full-casing drilling machine and construction method for removing old pile thereof |
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| CN101173517A (en) * | 2006-10-31 | 2008-05-07 | 上海市基础工程公司 | Pile-pulling construction method |
| CN101358452B (en) * | 2007-07-30 | 2010-06-02 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
| CN100535261C (en) * | 2007-08-16 | 2009-09-02 | 江苏华东建设基础工程总公司 | Pile extractor and construction method thereof |
| CN101886390B (en) * | 2010-06-12 | 2012-06-27 | 中铁十六局集团有限公司 | All casing static pressure pile pulling technology in narrow space |
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2015
- 2015-01-29 CN CN201510045863.5A patent/CN104532842B/en active Active
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