CN108867643A - Ultra-long pile base concrete casing method for pulling out - Google Patents
Ultra-long pile base concrete casing method for pulling out Download PDFInfo
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- CN108867643A CN108867643A CN201810572950.XA CN201810572950A CN108867643A CN 108867643 A CN108867643 A CN 108867643A CN 201810572950 A CN201810572950 A CN 201810572950A CN 108867643 A CN108867643 A CN 108867643A
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- China
- Prior art keywords
- casing
- ultra
- drilling rod
- pulling out
- base concrete
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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
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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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of ultra-long pile base concrete casing method for pulling out, include the following steps：Step 1: drilling machine is repositioned, rotary digging drill bit is laid down from drilling rod, and the rotation plug being made of sleeve, turntable and fixed cell is put on into drilling rod；Step 2: fixed cell and casing are fixedly linked；Step 3: rotating in the forward direction and reversely rotating drilling rod respectively several times, after casing loosens, promotes drilling rod and extract casing.The present invention have the characteristics that less investment, it is quick, piling strtucture can be protected to greatest extent, can be widely applied to road and bridge construction field.
Description
Technical field
The present invention relates to road and bridge construction fields, more particularly to a kind of ultra-long pile base concrete casing method for pulling out.
Background technique
It is generally poured in pile foundation concrete, i.e., after last root conduit is extracted, it is necessary to by the casing of cast-in-situ bored pile
It extracts.Because of this when, stake top end concrete also has certain mobile performance, and drawing at this time exerts oneself the minimum and used time most
It is few, on influencing also to can control in minimum zone caused by concrete structure.And if extracted not in time, it is reached to pile foundation concrete
To after final set, with the raising of concrete strength, adhesion strength increases between casing and concrete, does not only result in casing and can not pull out
Come, or even the Concrete Structure Crack of pile foundation pile crown can be made, to destroy piling strtucture.
The casing short and small for structure size, generallys use indentation or squeezes into the mode of the soil body and be buried in the earth, by construction
Specification, not less than 1.0m, in sand, compression distance is not less than 1.5m to compression distance in cohesive soil, it is ensured that not allowing in casing
Mud directly leak or go in the soil body, to keep the height in the mud face in stake holes, pile foundation aperture is avoided to collapse.Cause
This, the casing length of this soil property need to only rely on practical pore-forming equipment (for example percussive drill, abrasion drill generally within 3 meters
Machine) drilling cramp and hoist engine (crane or excavator backhoe) cooperation pile foundation casing can be extracted.
But in coastal beach area, the following soil property of earth's surface is in liquid-plastic state.When construction, the casing length one of this pile foundation
As construction needs, but the adhesion strength between the casing and concrete and the soil body of this length are just able to satisfy between 10 meters -15 meters
Also big, usually at 60 tons or more, lifting force or crane only with pore-forming drill are difficult to be pulled out.Existing extraction side
Method, it is necessary to play a role by 50 tons or more large tonnage cranes and vibration pile pulling sinker, be reduced by generating gap curtain jointly
The adherency of casing extracts casing to shake principle.But this process investment is huge, and process is complicated, and may be to piling strtucture
Bring adverse effect.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, a kind of ultra-long pile base concrete casing is provided and is pulled out
Method out, make it have less investment, it is quick, the characteristics of piling strtucture can be protected to greatest extent.
A kind of ultra-long pile base concrete casing method for pulling out provided by the invention, includes the following steps：Step 1: by drilling machine
It repositions, rotary digging drill bit is laid down from drilling rod, the rotation plug being made of sleeve, turntable and fixed cell is put on into drilling rod；Step
Rapid two, fixed cell and casing are fixedly linked；Step 3: rotating in the forward direction and reversely rotating drilling rod respectively several times, casing loosens
Afterwards, it promotes drilling rod and extracts casing.
In the above-mentioned technical solutions, in the step 1, before drilling machine repositions, steel reinforcement cage is first installed, is then existed
Pile foundation is poured with concrete under water.
In the above-mentioned technical solutions, the fixed cell is circumferentially to be evenly distributed with to insert by what bolt was connected with casing along turntable
Pin plate.
In the above-mentioned technical solutions, the pinboard shares 4 groups, every group of pinboard be two respectively with casing inner wall and outside
The connected pinboard of wall.
In the above-mentioned technical solutions, the turntable is distributed along the circumference with four radial stiffeners, and the radial direction stiffener is in
Triangular structure of right angle, the radial direction lateral right-angle side of stiffener are fixedly linked with sleeve outer wall.
In the above-mentioned technical solutions, the turntable between each adjacent two radial direction stiffener is equipped with turntable window.
In the above-mentioned technical solutions, the drilling rod and sleeve are connected by key and drilling rod and sleeve bottom pass through pin phase
Even.
In the above-mentioned technical solutions, the sleeve bottom is lower than turntable bottom, and the drilling rod bottom is lower than sleeve bottom.
Ultra-long pile base concrete casing method for pulling out of the present invention, has the advantages that：The present invention relates to overlength
Pile foundation plan analysis extracting apparatus is exactly the torque using drilling machine drilling rod, using the positive and negative rotation of drilling rod, revolves plug band
Dynamic casing twisting generates gap, forms slurry curtain, overcome so that relative displacement occurs for casing and concrete and external soil property
The frictional resistance of adhesion strength and promotion inside and outside casing passes through drilling rod after casing and concrete and outside soil property are kept completely separate
Casing is enhanced.Through overtesting it is found that after only rotating 2~3 times, drilling rod can smooth raising overlength casing.
Detailed description of the invention
Fig. 1 is the apparatus structure front view that ultra-long pile base concrete casing method for pulling out of the present invention is related to；
Fig. 2 is the apparatus structure top view that ultra-long pile base concrete casing method for pulling out of the present invention is related to；
Fig. 3 is structure enlargement diagram at A in Fig. 1；
The structural representation of pinboard in the device that Fig. 4 is related to for ultra-long pile base concrete casing method for pulling out of the present invention
Figure；
Fig. 5 is the flow diagram of ultra-long pile base concrete casing method for pulling out of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments, but the embodiment should not be construed as pair
Limitation of the invention.
Referring to Fig. 1 to Fig. 2, the device that ultra-long pile base concrete casing method for pulling out of the present invention is related to, including with drilling machine
The connected drilling rod 1 of (not shown), 1 bottom of drilling rod are respectively equipped with coaxially fixed sleeve 2 from inside to outside and turn
Disk 3,3 bottom of turntable are equipped with the fixed cell being fixedly linked with casing (not shown).
Referring to Fig. 3 to Fig. 4, the fixed cell is along the circumferential uniformly distributed pinboard being connected with casing by bolt of turntable 3
4。
The pinboard 4 shares 4 groups, and every group of pinboard 4 is two pinboards being connected respectively with casing inner and outer wall
4。
The turntable 3 is distributed along the circumference with four radial stiffeners 5, the rectangular triangular structure of the radial direction stiffener 5,
Radial direction 5 side of stiffener is fixedly linked to right-angle side and 2 outer wall of sleeve.The setting of the radial direction stiffener 5 is to increase
The intensity of turntable 3 and sleeve 2.
Turntable 3 between each adjacent two radial direction stiffener 5 is equipped with turntable window 6.The turntable window 6 can be convenient for sight
Examine the situation in casing.
The drilling rod 1 is connected by key with sleeve 2 and drilling rod 1 is connected with 2 bottom of sleeve by pin.It thus is avoided that
Drilling rod 1 and sleeve 2 loosen when high speed rotation.
2 bottom of sleeve is lower than 3 bottom of turntable, and 1 bottom of drilling rod is lower than 2 bottom of sleeve.The benefit of this structure
It is to keep the center of effort of structure low, is more advantageous to power transmission.
Referring to Fig. 5, ultra-long pile base concrete casing method for pulling out of the present invention includes the following steps：
Step 1: first to install steel reinforcement cage, it is poured pile foundation with concrete under water, then drilling machine is repositioned, from brill
Rotary digging drill bit is laid down on bar 1, the rotation plug being made of sleeve 2, turntable 3 and fixed cell is put on into drilling rod 1；
Step 2: pinboard 4 is fixedly linked with casing；
Step 3: rotating in the forward direction and reversely rotating drilling rod 1 respectively several times, after casing loosens, promotes drilling rod 1 and extract casing.
The present invention relates to ultra-long pile base concrete casing extracting apparatus be exactly torque using drilling machine drilling rod 1,
It using the positive and negative rotation of drilling rod 1, revolves plug and drives casing twisting, so that opposite position occurs for casing and concrete and external soil property
It moves, generates gap, form slurry curtain, the adhesion strength inside and outside casing and the frictional resistance of promotion are overcome, in casing and concrete
After being kept completely separate with external soil property, casing is enhanced by drilling rod 1.Through overtesting it is found that after only rotating 2~3 times, bore
Bar 1 can smooth raising overlength casing.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of ultra-long pile base concrete casing method for pulling out, it is characterised in that：Include the following steps：
Step 1: drilling machine is repositioned, rotary digging drill bit is laid down from drilling rod (1), it will be by sleeve (2), turntable (3) and fixed list
The rotation plug of member composition puts on drilling rod (1)；
Step 2: fixed cell and casing are fixedly linked；
Step 3: rotating in the forward direction and reversely rotating drilling rod (1) respectively several times, after casing loosens, promotes drilling rod (1) and extract casing.
2. ultra-long pile base concrete casing method for pulling out according to claim 1, it is characterised in that：In the step 1,
Before drilling machine repositions, steel reinforcement cage to be first installed, is then poured pile foundation with concrete under water.
3. ultra-long pile base concrete casing method for pulling out according to claim 1 or 2, it is characterised in that：It is described fixed single
Member is along the circumferentially uniformly distributed pinboard (4) being connected with casing by bolt of turntable (3).
4. ultra-long pile base concrete casing method for pulling out according to claim 3, it is characterised in that：The pinboard (4)
4 groups are shared, every group of pinboard (4) is two pinboards (4) being connected respectively with casing inner and outer wall.
5. ultra-long pile base concrete casing method for pulling out according to claim 1 or 2, it is characterised in that：The turntable (3)
Four radial stiffeners (5), described radial direction stiffener (5) rectangular triangular structure are distributed along the circumference with, the radial direction is put more energy into
The lateral right-angle side of plate (5) is fixedly linked with sleeve (2) outer wall.
6. ultra-long pile base concrete casing method for pulling out according to claim 5, it is characterised in that：Each adjacent two is radial
Turntable (3) between stiffener (5) is equipped with turntable window (6).
7. ultra-long pile base concrete casing method for pulling out according to claim 1 or 2, it is characterised in that：The drilling rod (1)
It is connected by key with sleeve (2) and drilling rod (1) is connected with sleeve (2) bottom by pin.
8. ultra-long pile base concrete casing method for pulling out according to claim 1 or 2, it is characterised in that：The sleeve (2)
Bottom is lower than turntable (3) bottom, and drilling rod (1) bottom is lower than sleeve (2) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572950.XA CN108867643A (en) | 2018-06-06 | 2018-06-06 | Ultra-long pile base concrete casing method for pulling out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572950.XA CN108867643A (en) | 2018-06-06 | 2018-06-06 | Ultra-long pile base concrete casing method for pulling out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108867643A true CN108867643A (en) | 2018-11-23 |
Family
ID=64336988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810572950.XA Pending CN108867643A (en) | 2018-06-06 | 2018-06-06 | Ultra-long pile base concrete casing method for pulling out |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571535A (en) * | 2023-04-20 | 2023-08-11 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294384A (en) * | 2008-07-01 | 2008-10-29 | 北京住总集团有限责任公司 | Pile, pole interface positioning device and construction method |
| CN203498836U (en) * | 2013-08-16 | 2014-03-26 | 中国一冶集团有限公司 | Device for pulling casing by utilizing rotary drilling rig |
| CN104294819A (en) * | 2014-11-04 | 2015-01-21 | 昆明学院 | Construction method of cast-in-place pile |
| CN106958242A (en) * | 2017-04-01 | 2017-07-18 | 浙江龙翔建设有限公司 | Steel pile casting is installed and method for dismounting |
| CN207260151U (en) * | 2017-08-21 | 2018-04-20 | 河北建设勘察研究院有限公司 | Drill bit is pulled out in a kind of rotation of the long casing of rotary drilling rig pulling bored concrete pile |
-
2018
- 2018-06-06 CN CN201810572950.XA patent/CN108867643A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294384A (en) * | 2008-07-01 | 2008-10-29 | 北京住总集团有限责任公司 | Pile, pole interface positioning device and construction method |
| CN203498836U (en) * | 2013-08-16 | 2014-03-26 | 中国一冶集团有限公司 | Device for pulling casing by utilizing rotary drilling rig |
| CN104294819A (en) * | 2014-11-04 | 2015-01-21 | 昆明学院 | Construction method of cast-in-place pile |
| CN106958242A (en) * | 2017-04-01 | 2017-07-18 | 浙江龙翔建设有限公司 | Steel pile casting is installed and method for dismounting |
| CN207260151U (en) * | 2017-08-21 | 2018-04-20 | 河北建设勘察研究院有限公司 | Drill bit is pulled out in a kind of rotation of the long casing of rotary drilling rig pulling bored concrete pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116571535A (en) * | 2023-04-20 | 2023-08-11 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
| CN116571535B (en) * | 2023-04-20 | 2023-10-27 | 中铁建工集团有限公司 | Pulling-resistant pile steel pipe fitting recycling device and method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |
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| RJ01 | Rejection of invention patent application after publication |