CN106836223A - A kind of pile extracting method - Google Patents
A kind of pile extracting method Download PDFInfo
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- CN106836223A CN106836223A CN201710232730.8A CN201710232730A CN106836223A CN 106836223 A CN106836223 A CN 106836223A CN 201710232730 A CN201710232730 A CN 201710232730A CN 106836223 A CN106836223 A CN 106836223A
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- stake
- pile
- connector
- extracting method
- reinforcing bar
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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)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a kind of pile extracting method, belong to construction engineering technical field.It solves the problems, such as that existing foundation pit enclosure structure system can destroy Guan Liang in pile pulling.This pile extracting method, foundation pit enclosure structure system is made up of some piles and Guan Liang, and stake is embedded in ground, and the top of each pile is connected by Guan Liang, and stake is formed by reinforcing bar and concreting, and this pile extracting method is comprised the following steps：A, stake periphery earth excavation；Prepare before B, pile pulling；C, pile pulling；D, repeat step C.This pile extracting method has the advantages that to extract stake immediately below Guan Liang in the case where foundation pit enclosure structure system is not destroyed.
Description
Technical field
The invention belongs to construction engineering technical field, it is related to a kind of pile extracting method.
Background technology
Modern building is all designed with basement, and to ensure the safety of basement earth excavation, foundation ditch periphery is all designed with
Foundation pit enclosure structure, foundation pit enclosure structure it is the most frequently used be piling structure form.
Whether qualified, the general basis in practice in detection campshed《Foundation pile length of reinforcing cage magnetic logging principle Detection Techniques code》
To detect the length of reinforcing cage of cast-in-situ bored pile, in actual test, stake influences with the perpendicularity of instrument connection, the reinforcing bar of all kinds of stakes
The difference of specification and quantity, the factor such as stake and test pitch of holes difference, corresponding mistake can be brought when length of reinforcing cage is explained
Difference.Therefore need to extract accuracy of the fender post checking length of reinforcing cage to verify detection, such as existing pile extracting method, China
Patent document data discloses the construction method [application number that pile pulling is carried out with pile-drawing machine：200710026145.9；Granted publication
Number：CN100535261C], construction method is comprised the following steps：(1)：Broken cushion cap, exposes by the pile crown of pile pulling；(2)：Steel
Cord is put into section sleeve pipe, lower section sleeve pipe, and the top of steel wire rope is hung on hasp, and end is located at upper section sleeve pipe and lower section sleeve pipe
Binding site；(3)：With crane hang vibration hammer, make section sleeve pipe, lower section casing centerline with by pile pulling center line same
On bar straight line；Vibration hammer etc. is started by step (4), (5), (6), (7), (8) again, finally stake is extracted from underground.
This kind of pile-pulling construction method, is realized more by high pressure pump system, air compressor system, crane system and cannula system
Labour-saving pile pulling, can extract the stake of two sections or the two section above；But when foundation pit enclosure structure uses piling structure form,
Campshed is connected to form one and goes along with sb. to guard him entirety by top Guan Liang, using this kind of structure pile-pulling construction method when, it is necessary to dig disconnected Guan Liang,
Guan Liang can be destroyed, the security of foundation pit enclosure structure system is influenceed.
The content of the invention
The purpose of the present invention is directed to the above-mentioned problems in the prior art, it is proposed that a kind of pile extracting method, solution
Technical problem is that the stake immediately below Guan Liang how is extracted in the case where foundation pit enclosure structure system is not destroyed.
The purpose of the present invention can be realized by following technical proposal：A kind of pile extracting method, foundation pit enclosure structure system by
Some piles and Guan Liang are constituted, and the stake is embedded in ground, and each top of the stake is connected by the Guan Liang, the stake
Formed by reinforcing bar and concreting, it is characterised in that this pile extracting method is comprised the following steps：
A, stake periphery earth excavation：The stake for needing is chosen, a hole is dug out in the surrounding of the stake, reveal the top of the stake
Go out；
Prepare before B, pile pulling：Cutting the concrete that the stake exposes in section exposes reinforcing bar, and cut-out reinforcing bar simultaneously retains setting
The reinforcing bar of length is exposed at the top of the stake, and the part reinforcing bar sets lifting system as the first welding section in Guan Liang, described
Lifting system includes the second connector, and the bottom of the second connector and the welding of the first welding section are connected；
C, pile pulling：Lifting system starts, and the stake is extracted the height of setting from ground, then cuts the stake and extracts
Concrete in section exposes reinforcing bar, and the reinforcing bar for cutting off reinforcing bar and retaining preseting length is exposed at the top of the stake, the part steel
Muscle moves down the second connector as the second welding section by lifting system, by the bottom of the second connector and the second welding section
Welding is connected；
D, repeat step C：Pile pulling several times, every time by one section of stake extraction, described in will be embedded in ground
Stake is extracted completely.
This pile extracting method is the multiple pile extracting method of non-destructive segmented, repeatedly stake is pulled up by segmentation, then
By the concrete chisel removal in each stake extracted, the reinforcing bar in the stake of extraction is cut, made during pile pulling, will not
Guan Liang is damaged, foundation pit enclosure structure system will not be destroyed, so that it is guaranteed that the security of foundation pit enclosure structure system.Stake week
Side earth excavation be in order that operating personnel can enter into hole in the concrete in stake is cut, the reinforcing bar in stake is carried out
The operation such as cutting and welding；In this pile extracting method, by stake per se with reinforcing bar and lifting system in the second connector
Welding is connected, and stake is connected with lifting system, lifting system is driven in stake and moves, and knot is connected without adding extra auxiliary
Structure, can simplify lifting system.
In a kind of above-mentioned pile extracting method, in the step B, the second connector and the first welding section are corresponded and set
Put, the second connector and the first welding section are welded after being connected, and pre- stretching is carried out to the second connector and the first welding section.This kind is tied
Structure, it is ensured that the stake uniform force during pile pulling, and Impact direction is vertically, stake is not gone out during rising
Existing inclined problem, makes pile pulling laborsaving, and improves the security of pile pulling.
In a kind of above-mentioned pile extracting method, in the step C, the second connector and the second welding section are corresponded and set
Put, before pile pulling, pre- stretching is carried out to the second connector and the second welding section.This kind of structure, it is ensured that the stake during pile pulling
Uniform force, and Impact direction is vertically, makes stake be not in inclined problem during rising, saves pile pulling
Power, and improve the security of pile pulling.
It is slow by lifting system when starting pile pulling in the step C and step D in a kind of above-mentioned pile extracting method
Fast drawing stake, when the stake starts upper shifting, by lifting system at the uniform velocity drawing stake.During beginning, pull at a slow speed, to destroy stake four
The soil in week, reduces the frictional resistance of the soil to stake of stake surrounding, security is improved, when stake starts upper shifting, by the uniform velocity pulling out
Stake, the frictional resistance for receiving pile is minimum, the extraction for enabling stake laborsaving, safe.
In a kind of above-mentioned pile extracting method, in step B, C, D, before reinforcing bar is cut off, by least four volumes
Outer fixed reinforcing bar is positioned to stake, prevents stake from being glided due to deadweight.At least four extra fixed reinforcing bar spaced sets,
Stake is positioned in all directions, holds stake, stake is not glided due to deadweight, it is ensured that the extraction of safety is capable of in stake.
In a kind of above-mentioned pile extracting method, between the step A and step B, the surrounding to the stake carries out preboring
Hole, to reduce the frictional resistance of the soil to stake of the stake surrounding.Stake is beaten in ground, and the soil in ground rubs to stake generation
Wipe resistance very big, by prebored hole, the soil of a surrounding is fluffed, reduce ground surrounding soil to the frictional resistance of stake, make stake
More can extract labour-saving.
In a kind of above-mentioned pile extracting method, in step B, C, D, 1-3 root reinforcing bars are chosen, during pile pulling
Bending reinforcement is not cut off.This kind of mode, be in order to coordinate detection stake in reinforcing bar length, by bending reinforcement after, do not interfere with
Normal to stake is pulled.
In a kind of above-mentioned pile extracting method, in the step A, consolidation process is carried out to the hole, and water pump is set
Ponding in the hole is discharged.Hole is reinforced and draining, is made the problem that hole is not in landslide, improved operation
Security.
In a kind of above-mentioned pile extracting method, in the step A, the depth in the hole is 2-4 meters.Hole degree is 2-4 meters,
One is to facilitate operator to be operated, and two when being that stake is pulled out upwards, and the height for pulling out every time will not be long, and the height for pulling out every time exists
0.5-2 meters is more suitable, therefore, the depth in hole is adapted with the height of pile pulling, reasonable in design.
In a kind of above-mentioned pile extracting method, the lifting system includes crane, jack, upper contiguous block, lower connecting block
With the first connector, the upper contiguous block is connected with lower connecting block by some first connectors, the upper contiguous block
Upper interval is fixed with several suspension ring, and the middle of the lower connecting block bottom has the cylindrical company of downwardly projecting setting
Post is connect, it is circumferentially spaced on the lateral wall of the connecting pole to be fixed with some second connectors, the upper contiguous block position
In the top of Guan Liang, the lower connecting block is located at the lower section of Guan Liang, and the crane is connected by drag-line with suspension ring, the jack
It is arranged in Guan Liang, and the top of jack can be resisted against the bottom of contiguous block.
The setting of upper contiguous block, this kind of structure of lower connecting block and the first connector, makes Guan Liang be located at upper contiguous block, lower connection
The middle of block and the first connector, this kind of structure makes to be damaged Guan Liang during pile pulling, will not destroy base
Pit enclosure structural system, so that it is guaranteed that the security of foundation pit enclosure structure system；Crane is connected by drag-line with suspension ring, by hanging
Car moves into place connecting pole, and the diameter of connecting pole is adapted with the diameter of stake, the second connection on the wall of connecting pole outer circumferential
Part is adapted with the reinforcing bar in stake, and the reinforcing bar in the second connector and stake is connected by welding, connecting pole and the second connector
Setting, stake uniform force and will not be inclined during pulling, improve the security of pile pulling.During pile pulling, jack sets
Put in Guan Liang, and the bottom of contiguous block is resisted against at the top of jack, slowly prestretching is carried out when jack starts, make
A connection piece is stretched, and then jack is continuously applied power, pulls stake at the uniform velocity to rise, when the height of upper contiguous block rising is more than very heavy
During the range on top, can be padded between jack and upper contiguous block plus plank, by crane to upper contiguous block and lower connection
The position of block is defined, and by jack pile pulling, stake is smoothly extracted, and safe.
In a kind of above-mentioned pile extracting method, the Guan Liang is provided with girder steel, and headblock is lined between the girder steel and Guan Liang,
The jack is located on girder steel, and the girder steel is mutually fixed with Guan Liang by channel-section steel in a ring.Headblock plays a part of buffering,
The setting of headblock ensures girder steel maintenance level, it is ensured that the second connector around connecting pole is located at same straight line with the reinforcing bar in stake
On.
In a kind of above-mentioned pile extracting method, first connector and the second connector are reinforcing bar or cable wire.The
A connection piece and the second connector are respectively provided with certain intensity, it is ensured that can bear the pulling force of pile pulling, and the first connector and second
Connector can carry out welding and be connected with reinforcing bar.
Compared with prior art, the pile extracting method that the present invention is provided has advantages below：
1st, this pile extracting method is the multiple pile extracting method of segmented, during pile pulling, will not destroy Guan Liang, encloses foundation ditch
All of stake in protection structure system is still connected by Guan Liang, foundation pit enclosure structure system will not be destroyed, so that it is guaranteed that base
The security in hole.
2nd, this pile extracting method be by stake per se with reinforcing bar and lifting system in the second connector weld be connected,
Stake is connected with lifting system, without adding extra auxiliary connecting structure, this lifting system, and reinforcing bar and can be simplified
Two connectors are connected by welding, are disconnected by cutting, easy to operate.
Brief description of the drawings
Integrality schematic diagram one when Fig. 1 is the pile pulling of this pile extracting method.
Integrality schematic diagram two when Fig. 2 is the pile pulling of this pile extracting method.
Fig. 3 is the structural representation of this pile extracting method Zhong Keng positions.
Fig. 4 is the structural representation of the first contiguous block, second contiguous block etc. in this pile extracting method.
In figure, 1, ground；2nd, stake；3rd, Guan Liang；4th, cheat；5th, the first welding section；6th, the second connector；7th, crane；8th, it is very heavy
Top；9th, upper contiguous block；10th, lower connecting block；11st, the first connector；12nd, suspension ring；13rd, connecting pole；14th, drag-line；15th, girder steel；16、
Headblock；17th, channel-section steel；18th, the second welding section.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
This pile extracting method is mainly used to detect the length of the reinforcing bar in stake 2, as shown in Figure 1 and Figure 2, the present embodiment
In, foundation pit enclosure structure system is made up of seven piles 2 and Guan Liang 3, and stake 2 is embedded in ground 1, and the top of seven piles 2 passes through Guan Liang 3
It is connected, stake 2 is formed by reinforcing bar and concreting, in actual production, the quantity of stake 2 can be four or 30,
This pile extracting method is comprised the following steps：
A, stake periphery earth excavation：Choosing needs detected stake 2, as shown in figure 3, in the present embodiment, in the surrounding of this 2
The hole 4 that depth is three meters is dug out, exposes the top of this 2, in actual production, the depth in the hole 4 can be two meters
Or four meters, consolidation process is carried out by the hole of timber 2 pairs 4, and water pump is set that the ponding in hole 4 is discharged, make in hole 4 not
Ponding can be produced, hole 4 is not caved in, it is ensured that the safety of operator.
Prepare before B, pile pulling：Surrounding to selecting stake 2 carries out prebored hole, to reduce friction of the soil of the surrounding of stake 2 to stake 2
Resistance, cutting the concrete that stake 2 exposes in section exposes reinforcing bar；In the present embodiment, by four extra fixed reinforcing bars to stake 2
Positioned, prevent stake 2 from being glided due to deadweight, in actual production, can be by the extra fixed reinforcing bar of the six roots of sensation or eight
Stake 2 is positioned；In the present embodiment, two reinforcing bars are chosen, do not cut off bending reinforcement during pile pulling 2, then will
The reinforcing bar that remaining bar cutting only retains preseting length is exposed at the top of stake 2, the part reinforcing bar as the first welding section 5,
In actual production, it is also possible to choose one or three reinforcing bars.
Lifting system is set in Guan Liang 3, in the present embodiment, lifting system include crane 7, jack 8, upper contiguous block 9,
The connector 11 of lower connecting block 10 and first, in actual production, lifting system can only include jack 8, upper contiguous block 9,
The connector 11 of lower connecting block 10 and first, without using crane 7, as shown in figure 4, upper contiguous block 9, lower connecting block 10 are in side
Shape, is fixed with suspension ring 12 on the corner of upper contiguous block 9, upper contiguous block 9 and two relative lateral walls of lower connecting block 10 pass through
First connector 11 is connected, and the middle of the bottom of lower connecting block 10 has the cylindrical connecting pole 13 of downwardly projecting setting,
Circumferentially spaced on the lateral wall of connecting pole 13 to be fixed with the second connector 6, in the present embodiment, the first connector 11 and second connects
Fitting 6 is reinforcing bar, and in actual production, the first connector 11 and the second connector 6 can be cable wire.Upper contiguous block 9
In the top of Guan Liang 3, lower connecting block 10 is located at the lower section of Guan Liang 3, and crane 7 is connected with suspension ring 12 by drag-line 14, is set in Guan Liang 3
There is girder steel 15, headblock 16 is lined between girder steel 15 and Guan Liang 3, jack 8 is located on girder steel 15, and the top of jack 8 can be supported
The bottom of contiguous block 9 is leaned against, girder steel 15 is mutually fixed with Guan Liang 3 by channel-section steel 17 in a ring.Second connector 6 and the first weldering
Connect section 5 and correspond setting, the bottom of the second connector 6 is welded connected with the first welding section 5, it is then extra fixed by four
Reinforcing bar is cut off, and pre- stretching is carried out to the second connector 6 and the first welding section 5.
C, pile pulling：If the insufficient height that jack 8 stretches out is contacted with upper contiguous block 9, can be in jack 8 and upper company
Pad plus plank between block 9 are connect, starts crane 7 and jack 8, during beginning, first drawing stake 2 at a slow speed, loosens stake 2, when stake 2 starts
During upper shifting, by the at the uniform velocity drawing stake 2 of jack 8, most the height of setting is extracted in stake 2 from ground 1 at last, is then cut stake 2 and is pulled out
The concrete gone out in section exposes reinforcing bar, and stake 2 is positioned by four extra fixed reinforcing bars, prevents stake 2 due under deadweight
Two bending reinforcements that are sliding, will choosing, then the reinforcing bar that remaining bar cutting only retains preseting length is exposed at the top of stake 2
Portion, the part reinforcing bar is corresponded and set as the second welding section 18, the second connector 6 and the second welding section 18, and second is connected
The bottom of fitting 6 is connected with the welding of the second welding section 18, then cuts off four extra fixed reinforcing bars, to the second connector 6
Pre- stretching is carried out with the second welding section 18.
D, repeat step C：Pile pulling 2, every time extract one section of stake 2 several times, and the stake 2 in it will be embedded in ground 1 is complete
It is complete to extract, the length of the reinforcing bar that two bendings are not switched off then is measured, detect whether the length of reinforcing bar is qualified.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Although more having used ground 1, stake 2, Guan Liang 3, the 4, first welding section 5 of hole, the second connector 6, crane herein
7th, jack 8, upper contiguous block 9, lower connecting block 10, the first connector 11, suspension ring 12, connecting pole 13, drag-line 14, girder steel 15, wood
The terms such as pad 16, channel-section steel 17, the second welding section 18, but it is not precluded from using the possibility of other terms.Using these terms only
Merely to more easily describing and explaining essence of the invention；Being construed as any additional limitation is all and this
What spirit was disagreed.
Claims (10)
1. a kind of pile extracting method, foundation pit enclosure structure system is made up of some piles (2) and Guan Liang (3), and the stake (2) is embedded in ground
In base (1), the top of each stake (2) is connected by the Guan Liang (3), and the stake (2) is by reinforcing bar and concreting
Form, it is characterised in that this pile pulling (2) method is comprised the following steps：
A, stake periphery earth excavation：The stake (2) for needing is chosen, a hole (4) is dug out in the surrounding of the stake (2), make the stake (2)
Top expose；
Prepare before B, pile pulling：Cutting the concrete that the stake (2) exposes in section exposes reinforcing bar, and cut-out reinforcing bar simultaneously retains setting length
The reinforcing bar of degree is exposed at the top of the stake (2), and the part reinforcing bar sets lifting system as the first welding section (5) in Guan Liang (3)
System, the lifting system includes the second connector (6), and the bottom of the second connector (6) and the first welding section (5) welding is solid
Even；
C, pile pulling：Lifting system starts, and the stake (2) is extracted the height of setting from ground (1), then cuts the stake
(2) concrete extracted in section exposes reinforcing bar, and the reinforcing bar for cutting off reinforcing bar and retaining preseting length is exposed at the top of the stake (2)
Portion, the part reinforcing bar moves down the second connector (6), by the second connector as the second welding section (18) by lifting system
(6) bottom is connected with the second welding section (18) welding；
D, repeat step C：Pile pulling several times (2), every time by one section of extraction of the stake (2), in it will be embedded in ground (1)
The stake (2) is extracted completely.
2. a kind of pile extracting method according to claim 1, it is characterised in that in the step B, the second connector (6)
Corresponded with the first welding section (5) and set, the second connector (6) and the first welding section (5) are welded after being connected, and are connected to second
Part (6) and the first welding section (5) carry out pre- stretching.
3. a kind of pile extracting method according to claim 1, it is characterised in that in the step C, the second connector (6)
Corresponded with the second welding section (18) and set, before pile pulling (2), the second connector (6) and the second welding section (18) carried out
Stretch in advance.
4. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that in the step C and step D,
It is even by lifting system when the stake (2) starts upper shifting by lifting system drawing stake (2) at a slow speed when starting pile pulling (2)
Fast drawing stake (2).
5. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that in step B, C, D, cutting
Before disconnected reinforcing bar, stake (2) is positioned by least four extra fixed reinforcing bars, prevent stake (2) from being glided due to deadweight.
6. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that the step A and step B it
Between, the surrounding to the stake (2) carries out prebored hole, to reduce the frictional resistance of the soil to stake (2) of the stake (2) surrounding.
7. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that in step B, C, D, chooses
1-3 root reinforcing bars, do not cut off bending reinforcement during pile pulling (2).
8. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that in the step A, to the hole
(4) consolidation process is carried out, and water pump is set that the ponding in the hole (4) is discharged, the depth of the hole (4) is 2-4 meters.
9. a kind of pile extracting method according to claim 1 or 2 or 3, it is characterised in that the lifting system includes crane
(7), jack (8), upper contiguous block (9), lower connecting block (10) and the first connector (11), the upper contiguous block (9) and lower company
Connect block (10) to be connected by some first connectors (11), interval is fixed with several and hangs on the upper contiguous block (9)
Ring (12), the middle of lower connecting block (10) bottom has the cylindrical connecting pole (13) of downwardly projecting setting, institute
State and circumferentially spaced on the lateral wall of connecting pole (13) be fixed with some second connectors (6), the upper contiguous block (9)
Positioned at the top of Guan Liang (3), the lower connecting block (10) positioned at the lower section of Guan Liang (3), the crane (7) by drag-line (14) with
Suspension ring (12) are connected, and the jack (8) is arranged in Guan Liang (3), and the top of jack (8) can be resisted against contiguous block
(9) bottom.
10. a kind of pile extracting method according to claim 9, it is characterised in that the Guan Liang (3) is provided with girder steel (15),
Headblock (16) is lined between the girder steel (15) and Guan Liang (3), the jack (8) is located on girder steel (15), the girder steel
(15) mutually fixed by channel-section steel (17) in a ring with Guan Liang (3), first connector (11) and the second connector (6) are
Reinforcing bar or cable wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232730.8A CN106836223B (en) | 2017-04-11 | 2017-04-11 | Pile pulling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232730.8A CN106836223B (en) | 2017-04-11 | 2017-04-11 | Pile pulling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106836223A true CN106836223A (en) | 2017-06-13 |
| CN106836223B CN106836223B (en) | 2022-06-21 |
Family
ID=59146603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710232730.8A Active CN106836223B (en) | 2017-04-11 | 2017-04-11 | Pile pulling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106836223B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403326A (en) * | 2018-12-14 | 2019-03-01 | 张成瑞 | Serious collapse hole occurs based on drilled pile and takes out steel reinforcement cage method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856938A (en) * | 1987-07-28 | 1989-08-15 | Bomag-Menck Gmbh | Method of and arrangement for separating tubular foundation piles under water |
| 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 |
| CN204898672U (en) * | 2015-08-20 | 2015-12-23 | 宁波市新亚建设有限公司 | Discard device of pulling out of pile foundation |
| CN105442605A (en) * | 2015-11-20 | 2016-03-30 | 常州第一建筑集团有限公司 | Construction method for drawing out prestress high concrete (PHC) pile and reusing PHC pile for retaining in deep excavation |
-
2017
- 2017-04-11 CN CN201710232730.8A patent/CN106836223B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856938A (en) * | 1987-07-28 | 1989-08-15 | Bomag-Menck Gmbh | Method of and arrangement for separating tubular foundation piles under water |
| 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 |
| CN204898672U (en) * | 2015-08-20 | 2015-12-23 | 宁波市新亚建设有限公司 | Discard device of pulling out of pile foundation |
| CN105442605A (en) * | 2015-11-20 | 2016-03-30 | 常州第一建筑集团有限公司 | Construction method for drawing out prestress high concrete (PHC) pile and reusing PHC pile for retaining in deep excavation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403326A (en) * | 2018-12-14 | 2019-03-01 | 张成瑞 | Serious collapse hole occurs based on drilled pile and takes out steel reinforcement cage method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106836223B (en) | 2022-06-21 |
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