CN108612105A - Pile-pulling construction method - Google Patents
Pile-pulling construction method Download PDFInfo
- Publication number
- CN108612105A CN108612105A CN201810645718.4A CN201810645718A CN108612105A CN 108612105 A CN108612105 A CN 108612105A CN 201810645718 A CN201810645718 A CN 201810645718A CN 108612105 A CN108612105 A CN 108612105A
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- China
- Prior art keywords
- steel
- soil
- fumarole
- high pressure
- stake
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of pile extracting methods, it is characterized in that needing the periphery for pulling out stake that the steel cage that loosens the soil is arranged, the steel cage that loosens the soil is connect with air compressor machine, fumarole is arranged in the steel cage that loosens the soil, air compressor machine generates high pressure gas during pile pulling, and fumarole ejects high pressure gas, and high pressure gas can disturb a surrounding soil；The process of pulling out will work continuously, and need to pull out stake top portion setting steel platform sling, stake is pulled out rear stake holes and clogged using clay.The present invention is easy to operate, securely and reliably.
Description
Technical field
The present invention relates to a kind of pile construction method, more particularly to a kind of pile-pulling construction method.
Background technology
For the house that upper load changes greatly, the arrangement of pile foundation may be adjusted on a large scale, need to pull out stake
The position that new pile can be occupied, since the length or diameter that need to pull out stake and new pile have larger difference, so to construct
New pile, which has to pull out needs, pulls out stake.If reservation needs to pull out stake, new pile is arranged around stake needing to pull out, then to be considered
Whole ground Rigidity can cause local stake sedimentation too small and cause uneven settlement of foundation if local stake arrangement is excessive.
And will produce larger frictional force between stake soil during the pulling out of stake, make stake be difficult to pull out.
According to achievement in research, reference literature《Bearing Behavior of Pure-friction Long Pile in Soft Clay is studied》, in stake
Portion's frictional force is relatively large, if upper friction power reduced, it will greatly improve the efficiency for pulling out stake.
Invention content
The present invention is to provide a kind of pile-pulling construction method, solves the problems, such as that pile pulling is inefficient.
The present invention is needing the periphery for pulling out stake that the steel cage that loosens the soil is arranged, and the steel cage that loosens the soil is connect with air compressor machine, and the steel cage that loosens the soil is set
Fumarole is set, air compressor machine generates high pressure gas during pile pulling, and fumarole ejects high pressure gas, and high pressure gas can disturb native around stake
Body substantially reduces the frictional force between stake soil, to enable stake smoothly to pull out.The process of pulling out will work continuously, and prevent soil around pile
It is consolidated because of interval.It is 1~1.4m, a length of 1~1.6m of Quad Sides, pine that the steel cage that loosens the soil, which uses circle or rectangular, round diameter,
Native steel cage includes outside plate, steel ribbed stiffener, air inlet pipe, inside steel plate, movable louver, dodge gate, outside plate and inside steel
Plate thickness is 10~12mm, between outside plate and inside steel plate be arranged steel ribbed stiffener, steel put more energy into rib thickness be 12~15mm,
It is 300~500mm that spacing, which is arranged, in steel ribbed stiffener, and air inlet pipe uses internal diameter for the hard plastic tube of 20~30mm, air inlet pipe every 300~
Vertically row's fumarole is arranged in distance to 400mm, and it is 200~300mm often to arrange adjacent fumarole lateral distance in fumarole, is sprayed up and down
Stomata is staggered arrangement, a diameter of 2~4mm of fumarole.
Closed terrace with edge is set between fumarole and inside steel plate, is fumarole at the top of terrace with edge, terrace with edge side is using small
Steel plate is welded, terrace with edge and inside steel plate delivery position setting activity louver, and dodge gate is connect by pin with movable louver,
When air inlet pipe injects high pressure gas, high pressure gas is diffused by terrace with edge, and dodge gate can automatically open, and high pressure gas is to the external soil body
Generate disturbance.When air inlet pipe does not reinject high pressure gas, dodge gate can automatic fall-back, prevent the external soil body enter outside plate and
Cavity that inside steel plate is formed and cause jet hole plug.Pressure-air should be slowly depressured, and must not stop pressure-air suddenly,
It prevents that instantaneous negative pressure, dodge gate is caused to have little time to fall after rise and pour in soil in cavity.
Needing to pull out suspension centre is subject to when stake is pulled out Local bearing capacity can be very big, therefore is arranged needing to pull out stake top portion
Steel platform sling avoids partial pressing from destroying, and steel platform sling thickness is 20~25mm, and three or four suspension centres are arranged in steel platform sling top, when pulling out
It uses three suspension centres, suspension centre to be arranged to equilateral triangle when being less than 300kN except power, is used when pulling out power more than or equal to 300kN
Four suspension centres, suspension centre are arranged to square.
Since the local force that steel platform sling is subject to can be very big, carry out steel platform sling and need the connection for pulling out stake most important.Such as
Fruit needs to pull out stake to be pile pile, and since pile pile is usually prestressed concrete, top is not easy to cut processing, therefore uses on pile pile
Casting concrete in portion's tube chamber, counter-force when being pulled out as steel platform sling using the frictional force of concrete and tube wall.Concrete length
For 400~500mm.Need to pull out pile pipe intracavitary and place steel reinforcement cage, steel reinforcement cage main frame by four a diameter of 20mm reinforcing bar group
At the square that the bar dowel that steel reinforcement cage bottom is 20mm is formed, steel reinforcement cage top ratio has been additionally arranged at the bottom of right-angled intersection muscle, intersects
The a diameter of 20mm of muscle.Steel reinforcement cage uses the steel scrap muscle in building site, to reduce cost.Steel reinforcement cage bottom has been laid with brown paper conduct and has poured
When underbed, brown paper as underbed when pouring rather than can save cost using backing plate.
It is solid concrete stake to pull out stake if necessary, cuts top concrete 300mm, is exposed it after steel bar stress
Horizontal buckling, steel bar stress and the steel platform sling of horizontal buckling weld, and steel bar stress and steel platform sling weld length are more than or equal to
280mm。
Pile pulling speed will match with air pressure, if pile pulling excessive velocities, be easy to cause negative pressure to block fumarole；Such as
Fruit pile pulling speed is excessively slow, and soil is easy part consolidation and generates frictional force and increase tube drawing difficulty.According to test result, when pile pulling speed
For 0.2~0.3m/min when it is most appropriate.In order to obtain the relationship of pile pulling speed and air pressure, largely tested, table 1 is not
With the relationship of soil property pile pulling speed and air pressure.According to test result, when soil property is mud, air pressure, which uses, is more than or equal to 1.5MPa
And it is less than 1.6MPa；When soil property is clay, air pressure uses more than or equal to 1.6MPa and is less than 1.7MPa；When soil property is silt
When, air pressure uses more than or equal to 1.7MPa and is less than 1.8MPa；When soil property is sand, air pressure use more than or equal to 1.8MPa and
Less than 1.9MPa.
The relationship of table 1 different soil property pile pulling speed and air pressure
| Soil property | Air pressure (MPa) | Speed (m/min) |
| Mud | 1.51 | 0.21 |
| 1.53 | 0.23 | |
| 1.56 | 0.26 | |
| 1.55 | 0.25 | |
| 1.58 | 0.28 | |
| Clay | 1.62 | 0.22 |
| 1.64 | 0.25 | |
| 1.66 | 0.27 | |
| 1.69 | 0.30 | |
| 1.63 | 0.24 | |
| Silt | 1.71 | 0.21 |
| 1.73 | 0.23 | |
| 1.74 | 0.25 | |
| 1.76 | 0.27 | |
| 1.78 | 0.29 | |
| Sand | 1.89 | 0.29 |
| 1.86 | 0.27 | |
| 1.83 | 0.23 | |
| 1.84 | 0.24 | |
| 1.82 | 0.22 |
Stake is pulled out rear stake holes and is clogged using clay, native weighted mean elasticity modulus around clay elasticity modulus and stake holes
Difference is no more than 10%, on the one hand foundation soil is made to be evenly distributed, and makes frictional force that local variations will not occur excessive, on the other hand
To make being consolidated as early as possible by disturbed soil during pulling out.
The present invention is easy to operate, securely and reliably.
Description of the drawings
Fig. 1 is the steel cage schematic diagram that loosens the soil, and Fig. 2 is that pile pile top structure handles schematic diagram, and Fig. 3 is steel reinforcement cage schematic diagram, Fig. 4
For solid concrete stake top portion pattern handling schematic diagram.
In each attached drawing：1, outside plate, 2, steel ribbed stiffener, 3, air inlet pipe, 4, inside steel plate, 5, movable louver, 6, activity
Door, 7, air compressor machine, 8, brown paper, 9, steel reinforcement cage, 10, steel platform sling, 11, suspension centre, 12, cross bar, 13, steel bar stress.
Specific implementation mode
It illustrates below in conjunction with the accompanying drawings.
Needing the periphery for pulling out stake that the steel cage that loosens the soil is set in the present embodiment, Fig. 1 is the steel cage schematic diagram that loosens the soil, and loosen the soil steel cage
It is connect with air compressor machine 7, fumarole is arranged in the steel cage that loosens the soil, and air compressor machine 7 generates high pressure gas during pile pulling, and fumarole ejects height
It calms the anger, high pressure gas can disturb a surrounding soil.The process of pulling out will work continuously, and prevent soil around pile from being consolidated because of interval.Loosen the soil steel
Cover using round, round diameter 1.2m, the steel cage that loosens the soil include outside plate 1, steel ribbed stiffener 2, air inlet pipe 3, inside steel plate 4,
Movable louver 5, dodge gate 6, outside plate 1 and 4 thickness of inside steel plate are 12mm, are set between outside plate 1 and inside steel plate 4
Set steel ribbed stiffener 2,2 thickness of steel ribbed stiffener is 15mm, and it is 400mm that spacing, which is arranged, in steel ribbed stiffener 2, air inlet pipe 3 use internal diameter for
The hard plastic tube of 25mm, every 350mm, vertically row's fumarole is arranged in distance to air inlet pipe 3, and it is horizontal often to arrange adjacent fumarole in fumarole
It is 250mm to distance, upper and lower fumarole is staggered arrangement, a diameter of 3mm of fumarole.
Closed terrace with edge is set between fumarole and inside steel plate 4, is fumarole at the top of terrace with edge, terrace with edge side is using small
Steel plate is welded, and terrace with edge and 4 delivery position setting activity louver 5 of inside steel plate, dodge gate 6 pass through pin and movable louver 5
Connection, when air inlet pipe 3 injects high pressure gas, high pressure gas is diffused by terrace with edge, and dodge gate 6 can automatically open, high pressure gas pair
The external soil body generates disturbance.When air inlet pipe 3 does not reinject high pressure gas, dodge gate 6 can automatic fall-back.Pressure-air should slowly drop
Pressure, must not stop pressure-air suddenly, prevent that instantaneous negative pressure, dodge gate 6 is caused to have little time to fall after rise and pour in mud in cavity
Soil.
Partial pressing is avoided to destroy needing to pull out stake top portion setting steel platform sling 10,10 thickness of steel platform sling is 22mm, and steel is hung
Three suspension centres 11 are arranged in 10 top of plate, and suspension centre 11 is arranged to equilateral triangle.
Fig. 2 is that pile pile top structure handles schematic diagram.It is pile pile to pull out stake if necessary, using in pile pile upper tube intracavitary
Casting concrete, counter-force when being pulled out as steel platform sling 10 using the frictional force of concrete and tube wall.Concrete length is
450mm.It needs to pull out pile pipe intracavitary placement steel reinforcement cage 9, Fig. 3 is 9 schematic diagram of steel reinforcement cage, and 9 main frame of steel reinforcement cage is by four diameters
It is formed for the reinforcing bar of 20mm, the square that the bar dowel that 9 bottom of steel reinforcement cage is 20mm is formed, 9 top ratio of steel reinforcement cage is additionally arranged at the bottom of
Right-angled intersection muscle 12, cross bar 12 a diameter of 20mm.For steel reinforcement cage 9 using the steel scrap muscle in building site, 9 bottom of steel reinforcement cage has been laid with ox
Mulberry paper 8 is as underbed when pouring.
Fig. 4 is solid concrete stake top portion pattern handling schematic diagram.It is solid concrete stake to pull out stake if necessary, is cut
Top concrete 300mm is exposed its horizontal buckling, steel bar stress 13 and the steel platform sling 10 of horizontal buckling after steel bar stress 13
Welding, steel bar stress 13 and 10 weld length of steel platform sling are more than or equal to 280mm.
Pile pulling speed uses 0.2~0.3m/min, and when soil property is mud, air pressure uses more than or equal to 1.5MPa and is less than
1.6MPa；When soil property is clay, air pressure uses more than or equal to 1.6MPa and is less than 1.7MPa；When soil property is silt, air pressure
Using more than or equal to 1.7MPa and less than 1.8MPa；When soil property is sand, air pressure uses more than or equal to 1.8MPa and is less than
1.9MPa。
Stake is pulled out rear stake holes and is clogged using clay, native weighted mean elasticity modulus around clay elasticity modulus and stake holes
Difference is no more than 10%.
Claims (1)
1. a kind of pile-pulling construction method, it is characterized in that needing the periphery for pulling out stake that the steel cage that loosens the soil is arranged, loosen the soil steel cage and pneumatics
Machine connects, and fumarole is arranged in the steel cage that loosens the soil, and air compressor machine generates high pressure gas during pile pulling, and fumarole ejects high pressure gas, high
A surrounding soil can be disturbed by calming the anger；The process of pulling out will work continuously, and prevent soil around pile from being consolidated because of interval；The steel cage that loosens the soil is using circle
Shape is rectangular, round diameter be 1~1.4m, a length of 1~1.6m of Quad Sides, the steel cage that loosens the soil include outside plate, steel ribbed stiffener,
Air inlet pipe, inside steel plate, movable louver, dodge gate, outside plate and inside steel plate thickness are 10~12mm, outside plate and
Steel ribbed stiffener is set between the steel plate of inside, steel puts more energy into rib thickness as 12~15mm, and it is 300~500mm that spacing, which is arranged, in steel ribbed stiffener,
Air inlet pipe uses internal diameter for the hard plastic tube of 20~30mm, and every 300~400mm, vertically row's fumarole is arranged in distance to air inlet pipe,
It is 200~300mm often to arrange adjacent fumarole lateral distance in fumarole, and upper and lower fumarole is staggered arrangement, jet bore dia
For 2~4mm；
Closed terrace with edge is set between fumarole and inside steel plate, is fumarole at the top of terrace with edge, terrace with edge side uses small steel plate
Be welded, terrace with edge and inside steel plate delivery position setting activity louver, dodge gate are connect by pin with activity louver, when into
When tracheae injects high pressure gas, high pressure gas is diffused by terrace with edge, and dodge gate can automatically open, and high pressure gas generates the external soil body
Disturbance；When air inlet pipe does not reinject high pressure gas, dodge gate can automatic fall-back；Pressure-air should be slowly depressured, must not be by high pressure
Air stops suddenly, prevents that instantaneous negative pressure, dodge gate is caused to have little time to fall after rise and pour in soil in cavity；
It is needing to pull out stake top portion setting steel platform sling, stake is pulled out rear stake holes and clogged using clay；
Steel platform sling thickness is 20~25mm, and three or four suspension centres are arranged in steel platform sling top, are used when pulling out power less than 300kN
Three suspension centres, suspension centre are arranged to equilateral triangle, and four suspension centres, suspension centre is used to be arranged to when pulling out power more than or equal to 300kN
Square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645718.4A CN108612105B (en) | 2016-11-11 | 2016-11-11 | Pile pulling construction method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645718.4A CN108612105B (en) | 2016-11-11 | 2016-11-11 | Pile pulling construction method |
| CN201611013233.0A CN106930288B (en) | 2016-11-11 | 2016-11-11 | A kind of pile extracting method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611013233.0A Division CN106930288B (en) | 2016-11-11 | 2016-11-11 | A kind of pile extracting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108612105A true CN108612105A (en) | 2018-10-02 |
| CN108612105B CN108612105B (en) | 2020-08-28 |
Family
ID=59444018
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611013233.0A Active CN106930288B (en) | 2016-11-11 | 2016-11-11 | A kind of pile extracting method |
| CN201810644054.XA Active CN108612103B (en) | 2016-11-11 | 2016-11-11 | Solid concrete pile pulling method |
| CN201810645718.4A Active CN108612105B (en) | 2016-11-11 | 2016-11-11 | Pile pulling construction method |
| CN201810645154.4A Active CN108612104B (en) | 2016-11-11 | 2016-11-11 | Tubular pile pulling method |
| CN201810646079.3A Active CN108643182B (en) | 2016-11-11 | 2016-11-11 | Pile pulling method for different soil qualities |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611013233.0A Active CN106930288B (en) | 2016-11-11 | 2016-11-11 | A kind of pile extracting method |
| CN201810644054.XA Active CN108612103B (en) | 2016-11-11 | 2016-11-11 | Solid concrete pile pulling method |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810645154.4A Active CN108612104B (en) | 2016-11-11 | 2016-11-11 | Tubular pile pulling method |
| CN201810646079.3A Active CN108643182B (en) | 2016-11-11 | 2016-11-11 | Pile pulling method for different soil qualities |
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| CN (5) | CN106930288B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747854B (en) * | 2019-10-30 | 2021-01-01 | 中南大学 | Double-sleeve pile pulling device for pulling out ultra-long pile in limited space |
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| CN202688999U (en) * | 2012-06-15 | 2013-01-23 | 蔡崇晓 | High-pressure-water antifriction device for extracting tube for tubular pile |
| CN104294825A (en) * | 2014-10-29 | 2015-01-21 | 温州荣强海洋科技有限公司 | Metro construction pile pulling device without water burst and mud burst and construction method thereof |
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| CN104652436A (en) * | 2014-12-24 | 2015-05-27 | 福建工程学院 | Steel sleeve soil taking and high-pressure water injection soil loosening pile pulling construction method |
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| JP2603601B2 (en) * | 1994-12-22 | 1997-04-23 | 東洋ゴム工業株式会社 | Method of manufacturing laminated molded product for vibration prevention |
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| 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 |
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| CN105625430B (en) * | 2014-12-26 | 2018-05-25 | 中国铁建大桥工程局集团有限公司 | A kind of narrow and small construction area high -pressure water cutting soil body pile extracting method |
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2016
- 2016-11-11 CN CN201611013233.0A patent/CN106930288B/en active Active
- 2016-11-11 CN CN201810644054.XA patent/CN108612103B/en active Active
- 2016-11-11 CN CN201810645718.4A patent/CN108612105B/en active Active
- 2016-11-11 CN CN201810645154.4A patent/CN108612104B/en active Active
- 2016-11-11 CN CN201810646079.3A patent/CN108643182B/en active Active
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|---|---|---|---|---|
| JPS55132814A (en) * | 1979-04-03 | 1980-10-16 | Sanwa Kizai Co Ltd | Pulling-out method for pile |
| JPH083999A (en) * | 1994-06-16 | 1996-01-09 | Meisho Giken:Kk | Excavator for pulling out existing foundation pile |
| CN1482309A (en) * | 2003-06-12 | 2004-03-17 | 上海隧道工程股份有限公司 | A drill hole grout pile drag reduction extraction process |
| JP2012241329A (en) * | 2011-05-16 | 2012-12-10 | Takuma Uchida | Method of removing existing pile |
| CN202688999U (en) * | 2012-06-15 | 2013-01-23 | 蔡崇晓 | High-pressure-water antifriction device for extracting tube for tubular pile |
| CN104294825A (en) * | 2014-10-29 | 2015-01-21 | 温州荣强海洋科技有限公司 | Metro construction pile pulling device without water burst and mud burst and construction method thereof |
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| CN104652436A (en) * | 2014-12-24 | 2015-05-27 | 福建工程学院 | Steel sleeve soil taking and high-pressure water injection soil loosening pile pulling construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108612104B (en) | 2020-08-28 |
| CN108612104A (en) | 2018-10-02 |
| CN106930288A (en) | 2017-07-07 |
| CN108612103B (en) | 2020-08-28 |
| CN108643182A (en) | 2018-10-12 |
| CN106930288B (en) | 2018-11-09 |
| CN108643182B (en) | 2020-08-28 |
| CN108612105B (en) | 2020-08-28 |
| CN108612103A (en) | 2018-10-02 |
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