CN107338794A - Static pile press pile pulling steel sleeve and pile extracting method - Google Patents
Static pile press pile pulling steel sleeve and pile extracting method Download PDFInfo
- Publication number
- CN107338794A CN107338794A CN201611214499.1A CN201611214499A CN107338794A CN 107338794 A CN107338794 A CN 107338794A CN 201611214499 A CN201611214499 A CN 201611214499A CN 107338794 A CN107338794 A CN 107338794A
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- steel sleeve
- pile
- pile pulling
- steel
- plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 149
- 239000010959 steel Substances 0.000 title claims abstract description 149
- 230000003068 static effect Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000002689 soil Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 230000002153 concerted effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000003169 placental effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- 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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of static pile press pile pulling steel sleeve, including pile pulling head steel sleeve and standard knot steel sleeve, the lower end of described pile pulling head steel sleeve sets at least two pieces of pile pulling head hooks, and the inner tubal wall circumference of upper end tube nozzle is provided with least two pieces and strengthens plate and be provided with pin hole on plate is strengthened；The inwall of the lower end mouth of pipe of described standard knot steel sleeve uniformly lays at least two pieces reinforcement plates, strengthen the connection plug-in unit of a stretching lower end mouth of pipe of being sticked in plate at every piece, it is corresponding with the pin hole of described pile pulling head steel sleeve upper end tube nozzle inner tubal wall that this every block connection plug-in unit is provided with pin hole, two pieces are uniformly distributed in the tube wall of the upper end tube nozzle of described standard knot steel sleeve with upper reinforcing plate block, has pin hole on the reinforcement plate.Efficiency of construction of the present invention is high, average to pull out 5~6 per machine-team, and pile pulling process is noiseless, does not produce mud, not to place and environmental effects, meets environmental requirement.
Description
Technical field
It is particularly a kind of to utilize the pile pulling steel sleeve of static pile press pile pulling and pile pulling side the present invention relates to building field
Method.
Background technology
Conventionally employed full-sleeve double fluid high-pressure jet, jetting vibration sinking tube back cover borehole cleaning method, i.e.,：It is sharp after vibration dip steel sleeve
With the high pressure water washing stake periphery soil body, stake is set to be exposed to the method for recycling crane to extract stake behind outside.
Conventional method has as a drawback that：
1st, low construction efficiency, platform effect be not high；
2nd, substantial amounts of mud is produced during being rinsed with water, place is more dirty and messy, and mud also needs to transport outward, not environmentally.
The content of the invention
A kind of the shortcomings that it is an object of the invention to overcome above-mentioned existing pile extracting method, there is provided static pile press pile pulling steel bushing
Pipe and pile extracting method.
The technical solution of the present invention is as follows：
A kind of static pile press pile pulling steel sleeve, its feature are, including pile pulling head steel sleeve and standard knot steel sleeve, institute
The lower end for the pile pulling head steel sleeve stated sets at least two pieces of pile pulling head hooks, the inner tubal wall circumference of upper end tube nozzle and added provided with least two pieces
Strong plate is simultaneously provided with pin hole on plate is strengthened；The composition of described pile pulling head hook includes：Under pile pulling head steel sleeve
End is provided with tube wall perforate, sets ttom of pipe to strengthen steel plate in lower edge to the lower port of steel sleeve of the tube wall perforate, in described pipe
The upper edge of wall perforate is angle limit plate, and an otic placode is respectively welded on the outer wall of steel pipe of the both sides of described tube wall perforate,
Two otic placodes wear an axle provided with axis hole, and one end of hook through described steel pipe walls perforate and is enclosed on described axle from inside to outside
On can be rotated up and down around axle, the slewing area of described hook strengthens steel plate limit by described angle limit plate and described ttom of pipe
System；
The inwall of the lower end mouth of pipe of described standard knot steel sleeve uniformly lays at least two pieces reinforcement plates, in every piece of reinforcement
Be sticked the connection plug-in unit of a stretching lower end mouth of pipe in plate, and this every block connection plug-in unit is provided with pin hole and described pile pulling head steel
The pin hole of sleeve upper end mouth of pipe inner tubal wall is corresponding, is uniformly distributed in the tube wall of the upper end tube nozzle of described standard knot steel sleeve
Two pieces with upper reinforcing plate block, have pin hole on the reinforcement plate.
Described reinforcement plate and the quantity of connection plug-in unit are four.
The method that pile pulling is carried out using above-mentioned static pile press pile pulling steel sleeve, this method are comprised the following steps：
1) underground old pile head is cleared up；
2) static pile press is in place；
3) lower end of pile pulling head steel sleeve is aligned and is enclosed on old pile crown by static pile press using crane, by a section
In the upper end of pile pulling head steel sleeve described in four connection plug-in unit insertions of the lower end of standard steel sleeve, and passed through and pulled out with steel pin bolt
The pin hole of pile crown steel sleeve and the pin hole of connection plug-in unit are attached, and adjust the perpendicularity of steel sleeve and old pile crown；
4) piling：Start static pile press, push described standard knot steel sleeve, at this moment described pile pulling is linked up with by steel
Opened upwards in the presence of native upward power and described angle limit plate between sleeve pipe and old stake, when standard knot steel sleeve upper end
Pin hole when not yet in depth descending, pause pushes；
5) spreading：The connection plug-in unit of the lower end of another section standard knot steel sleeve is inserted into previous feast-brand mark using static pile press
Standard is saved in the upper end of steel sleeve, and pin hole and the connection plug-in unit of the previous upper end for saving standard knot steel sleeve are passed through with steel pin bolt
Pin hole is attached；
6) repeat step 4), 5), the depth until reaching requirement, i.e., bottom of the described pile pulling hook less than old stake；
7) pile pulling is tried：Steel sleeve is slowly lifted using static pile press, the pile pulling hook of described pile pulling head steel sleeve exists
Pile pulling hook is rotated down again by described in the presence of lifting steel sleeve lifting force, the making a concerted effort of hook deadweight and soil extruding
Ttom of pipe strengthens the limitation of steel plate, and it is in flat condition to link up with described pile pulling, when pile pulling hook rises to old stake stake bottom, pile pulling
Hook catches old stake stake bottom, and old stake necessarily rises with steel sleeve, old stake state is observed, when the steel sleeve of old stake and pile pulling is same
When step rises, then it is judged as that pipe pile pulling is correct in place, is transferred in next step, is otherwise transferred to step 4)；
8) pile pulling：Steel sleeve is slowly lifted using static pile press, when the steel pin bolt of the quasi- section steel sleeve of next feast-brand mark occurs
In suitable height, extract the steel pin bolt of steel sleeve connection, break a joint standard knot steel sleeve, while old stake blocked remove to
Ground, continue one and save to lift remaining steel sleeve, while one saves and blocks old stake, removes and puts on the ground, up to most
Following pile pulling head steel sleeve all extracts ground, completes this extraction；
9) static pile press is moved to next pile position, return to step 1).
Compared with prior art, the beneficial effects of the invention are as follows：
1st, efficiency of construction is high, and saving stake by District of Shanghai three calculates, average to pull out 5~6 per machine-team；
2nd, pile pulling process is noiseless, does not produce mud, very environmentally friendly not to place and environmental effects.
Brief description of the drawings
Fig. 1 is the structural representation of static pile press pile pulling steel sleeve of the present invention；
Fig. 2 is that pile pulling head steel sleeve pushes open configuration figure in static pile press pile pulling steel sleeve of the present invention；
Fig. 3 is A-A sectional views in Fig. 2
Fig. 4 is the structural representation of static pile press pile pulling steel sleeve Plays section steel sleeve of the present invention；
Fig. 5 is D-D sectional views in Fig. 4
Fig. 6 is the connected mode of static pile press pile pulling steel sleeve of the present invention, is connect wherein (a) tethers for steel pin, (b) is interior
Slot steel pin, which tethers, to be connect
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1-Fig. 5 is referred to, Fig. 1 is the structural representation of static pile press pile pulling steel sleeve of the present invention, and Fig. 2 is the present invention
Pile pulling head steel sleeve pushes open configuration figure in static pile press pile pulling steel sleeve, and Fig. 3 is A-A sectional views in Fig. 2, Fig. 4 is
The structural representation of static pile press pile pulling steel sleeve Plays section steel sleeve of the present invention, Fig. 5 is D-D sectional views in Fig. 4.Such as figure
It is shown, a kind of static pile press pile pulling steel sleeve, including pile pulling head steel sleeve 1 and standard knot steel sleeve 2, described pile pulling head steel
The lower end of sleeve pipe 1 sets at least two pieces of pile pulling head hooks, and the inner tubal wall circumference of upper end tube nozzle is provided with least two pieces and strengthens plate 18 simultaneously
Pin hole 19 is provided with plate is strengthened；The composition of described pile pulling head hook includes：It is provided with the lower end of pile pulling head steel sleeve
Tube wall perforate 13, ttom of pipe is set to strengthen steel plate 15 in lower edge to the lower port of steel sleeve of the tube wall perforate 13, in described pipe
The upper edge of wall perforate 13 is angle limit plate 11, and an ear is respectively welded on the outer wall of steel pipe of the both sides of described tube wall perforate 13
Plate 16, an axle 14 is worn provided with axis hole on two otic placodes 16, the one end for linking up with 12 passes through described steel pipe walls perforate from inside to outside
13 and it is enclosed on described axle 14 and can be rotated up and down around axle, the slewing area of described hook 12 is by described angle limit plate 11
Strengthen steel plate 15 with described ttom of pipe to limit；
The inwall of the lower end mouth of pipe of described standard knot steel sleeve 2 uniformly lays at least two pieces reinforcement plates 21, at every piece
Strengthen the connection plug-in unit 22 of a stretching lower end mouth of pipe of being sticked in plate 21, this every block connection plug-in unit 22 is provided with pin hole 23 and institute
The pin hole 19 for the pile pulling head steel sleeve upper end tube nozzle inner tubal wall stated is corresponding, the upper end tube nozzle of described standard knot steel sleeve
Two pieces are uniformly distributed in tube wall with upper reinforcing plate block 25, has pin hole 26 on the reinforcement plate 25.
Using static pile press pile pulling steel sleeve carry out pile pulling method, comprise the following steps：
1) underground old pile head is cleared up；
2) static pile press is in place；
3) lower end of pile pulling head steel sleeve 1 is aligned and is enclosed on old pile crown 7 by static pile press using crane, by one
Four connection plug-in units 22 of the lower end of the quasi- steel sleeve 2 of feast-brand mark are inserted in the upper end tube nozzle of described pile pulling head steel sleeve 1, and use steel
Pin 17 is attached through the pin hole 23 in the pin hole 19 of pile pulling head steel sleeve 1 and connection plug-in unit, adjustment steel sleeve and old
The perpendicularity of pile crown 7；
4) piling：Start static pile press, push described standard knot steel sleeve, at this moment described pile pulling hook 12 by
Upward side shrinks in the presence of the upward power of soil between steel sleeve and old stake and described angle limit plate 11, works as mark
When the pin hole 26 of quasi- section steel sleeve upper end is not yet in depth descended, pause pushes；
5) spreading：The connection plug-in unit of the lower end of another section standard knot steel sleeve 1 is inserted into previous section using static pile press
In the upper end tube nozzle of standard knot steel sleeve, and the pin hole with steel pin bolt 24 through the upper end of previous section standard knot steel sleeve 1
(26) and connection plug-in unit pin hole 23 be attached；
6) repeat step 4), 5), the depth until reaching requirement, i.e., described pile pulling hook 12 is less than old pile crown 7；
7) pile pulling is tried：Steel sleeve, the pile pulling hook 12 of described pile pulling head steel sleeve 1 are slowly lifted using static pile press
Described pile pulling hook 12 turns downwards in the presence of the making a concerted effort of lifting force, hook deadweight and soil extruding in lifting steel sleeve
It is dynamic, then strengthened steel plate 15 by described ttom of pipe and limited, described pile pulling is linked up with 12 in open configuration is kept flat, when pile pulling is hung
When hook rises to old stake stake bottom, pile pulling hook 12 catches old stake stake bottom, and old stake necessarily rises with steel sleeve, observes old stake shape
State, when old stake is synchronous with the steel sleeve of pile pulling to be risen, then it is judged as that pile pulling is correct in place, is transferred in next step, is otherwise transferred to step
It is rapid 4)；
8) pile pulling：Steel sleeve is slowly lifted using static pile press, when the steel pin bolt of the quasi- section steel sleeve of next feast-brand mark occurs
In suitable height, extract the steel pin bolt of steel sleeve connection, break a joint standard knot steel sleeve, while old stake blocked remove to
Ground, continue one and save to lift remaining steel sleeve, while one saves and blocks old stake, removes and puts on the ground, up to most
Following pile pulling head steel sleeve all extracts ground, completes this extraction；
9) static pile press is moved to next pile position, return to step 1).
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although ginseng
The present invention is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to invention
Technical scheme is modified or equivalent substitution, and without departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (3)
1. a kind of static pile press pile pulling steel sleeve, it is characterised in that including pile pulling head steel sleeve (1) and standard knot steel sleeve
(2), the lower end of described pile pulling head steel sleeve (1) sets at least two pieces of pile pulling head hooks, the inner tubal wall circumference of upper end tube nozzle and is provided with
At least two pieces are strengthened plate (18) and are provided with pin hole (19) on plate is strengthened；The composition of described pile pulling head hook includes：
Tube wall perforate (13) is provided with the lower end of pile pulling head steel sleeve, is set in lower edge to the lower port of steel sleeve of the tube wall perforate (13)
Put ttom of pipe and strengthen steel plate (15), be angle limit plate (11) on the upper edge of described tube wall perforate (13), opened in described tube wall
An otic placode (16) is respectively welded on the outer wall of steel pipe of the both sides in hole (13), an axle is worn provided with axis hole on two otic placodes (16)
(14) one end of (12), is linked up with from inside to outside through described steel pipe walls perforate (13) and be enclosed on can be around axle on described axle (14)
Rotation up and down, the slewing area of described hook (12) strengthen steel plate by described angle limit plate (11) and described ttom of pipe
(15) limit；
The inwall of the lower end mouth of pipe of described standard knot steel sleeve (2) uniformly lays at least two pieces and strengthens plate (21), at every piece
Strengthen the connection plug-in unit (22) of the interior stretching lower end mouth of pipe that is sticked of plate (21), this every piece connection plug-in unit (22) is provided with pin hole
(23) it is corresponding with the pin hole (19) of described pile pulling head steel sleeve upper end tube nozzle inner tubal wall, described standard knot steel sleeve
Two pieces are uniformly distributed in the tube wall of upper end tube nozzle with upper reinforcing plate block (25), has pin hole (26) on the reinforcement plate (25).
2. static pile press pile pulling steel sleeve according to claim 1, it is characterised in that described reinforcement plate and connection
The quantity of plug-in unit is four.
3. the method for pile pulling is carried out using the static pile press pile pulling steel sleeve described in claim 1, it is characterised in that this method
Comprise the following steps：
1) underground old pile head is cleared up；
2) static pile press is in place；
3) lower end of pile pulling head steel sleeve (1) is aligned and is enclosed on old pile crown (7) by static pile press using crane, by one
In the upper end tube nozzle of pile pulling head steel sleeve (1) described in four connection plug-in unit (22) insertions of the lower end of the quasi- steel sleeve of feast-brand mark (2),
And be attached with steel pin bolt (17) through the pin hole (23) in the pin hole (19) of pile pulling head steel sleeve (1) and connection plug-in unit,
Adjust the perpendicularity of steel sleeve and old pile crown (7)；
4) piling：Start static pile press, push described standard knot steel sleeve, at this moment described pile pulling links up with (12) by steel
Upward side shrinks in the presence of the upward power of soil between sleeve pipe and old stake and described angle limit plate (11), works as mark
When the pin hole (26) of quasi- section steel sleeve upper end is not yet in depth descended, pause pushes；
5) spreading：The connection plug-in unit of the lower end of another section standard knot steel sleeve (1) is inserted into previous feast-brand mark using static pile press
In the upper end tube nozzle of quasi- section steel sleeve, and the pin hole with steel pin bolt (24) through the upper end of previous section standard knot steel sleeve (1)
(26) and connection plug-in unit pin hole (23) be attached；
6) repeat step 4), 5), the depth until reaching requirement, i.e., described pile pulling hook (12) is less than old pile crown (7)；
7) pile pulling is tried：Steel sleeve, the pile pulling hook (12) of described pile pulling head steel sleeve (1) are slowly lifted using static pile press
Described pile pulling hook (12) turns downwards in the presence of the making a concerted effort of lifting force, hook deadweight and soil extruding in lifting steel sleeve
Dynamic, then strengthened steel plate (15) by described ttom of pipe and limited, it is in keep flat open configuration described pile pulling link up with (12), when pulling out
When stake hook rises to old stake stake bottom, pile pulling hook (12) catches old stake stake bottom, and old stake necessarily rises with steel sleeve, observes
Old stake state, when old stake is synchronous with the steel sleeve of pile pulling to be risen, then it is judged as that pile pulling is correct in place, is transferred in next step, otherwise
It is transferred to step 4)；
8) pile pulling：Steel sleeve is slowly lifted using static pile press, when the steel pin bolt of the quasi- section steel sleeve of next feast-brand mark appears in conjunction
Suitable height, the steel pin bolt of steel sleeve connection is extracted, broken a joint standard knot steel sleeve, while old stake is blocked and removed to ground
Face, continue one and save to lift remaining steel sleeve, while one saves and blocks old stake, removes and puts on the ground, up to most lower
The pile pulling head steel sleeve in face all extracts ground, completes this extraction；
9) static pile press is moved to next pile position, return to step 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214499.1A CN107338794A (en) | 2016-12-26 | 2016-12-26 | Static pile press pile pulling steel sleeve and pile extracting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214499.1A CN107338794A (en) | 2016-12-26 | 2016-12-26 | Static pile press pile pulling steel sleeve and pile extracting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107338794A true CN107338794A (en) | 2017-11-10 |
Family
ID=60222380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611214499.1A Pending CN107338794A (en) | 2016-12-26 | 2016-12-26 | Static pile press pile pulling steel sleeve and pile extracting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107338794A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560551A (en) * | 2018-04-16 | 2018-09-21 | 五冶集团上海有限公司 | A kind of pile pulling sleeve and its application method |
| CN108797592A (en) * | 2018-06-28 | 2018-11-13 | 中交上海航道局有限公司 | A kind of Two bors d's oeuveres channel steel applied to building structure pile foundation assists pile pulling device |
| CN108842773A (en) * | 2018-06-28 | 2018-11-20 | 中交上海航道局有限公司 | A kind of single sleeve auxiliary pile pulling device applied to building structure pile foundation |
| CN111042134A (en) * | 2019-12-09 | 2020-04-21 | 上海市基础工程集团有限公司 | Pile breaking preventing device for underwater inclined pile pulling |
| CN112832241A (en) * | 2021-01-05 | 2021-05-25 | 北京建工土木工程有限公司 | Small-diameter rapid pile pulling device for civil engineering and application method 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 |
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| CN101629421A (en) * | 2009-08-04 | 2010-01-20 | 上海隧道工程股份有限公司 | Method for pulling out deep pile foundation by utilizing full slewing drilling machine |
| CN101886390A (en) * | 2010-06-12 | 2010-11-17 | 中铁十六局集团有限公司 | All casing static pressure pile pulling technology in narrow space |
| CN202323950U (en) * | 2011-11-24 | 2012-07-11 | 上海八洲建设工程有限公司 | Rotary casing connecting structure of rotary pile extractor |
| CN203846496U (en) * | 2014-05-09 | 2014-09-24 | 江苏省华建建设股份有限公司 | Self-lock device for pulling timber piles |
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| CN206328754U (en) * | 2016-12-26 | 2017-07-14 | 上海宝力通基础工程有限公司 | A kind of pile pulling steel sleeve based on static pile press |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| CN101629421A (en) * | 2009-08-04 | 2010-01-20 | 上海隧道工程股份有限公司 | Method for pulling out deep pile foundation by utilizing full slewing drilling machine |
| CN101886390A (en) * | 2010-06-12 | 2010-11-17 | 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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| CN203846496U (en) * | 2014-05-09 | 2014-09-24 | 江苏省华建建设股份有限公司 | Self-lock device for pulling timber piles |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560551A (en) * | 2018-04-16 | 2018-09-21 | 五冶集团上海有限公司 | A kind of pile pulling sleeve and its application method |
| CN108797592A (en) * | 2018-06-28 | 2018-11-13 | 中交上海航道局有限公司 | A kind of Two bors d's oeuveres channel steel applied to building structure pile foundation assists pile pulling device |
| CN108842773A (en) * | 2018-06-28 | 2018-11-20 | 中交上海航道局有限公司 | A kind of single sleeve auxiliary pile pulling device applied to building structure pile foundation |
| CN111042134A (en) * | 2019-12-09 | 2020-04-21 | 上海市基础工程集团有限公司 | Pile breaking preventing device for underwater inclined pile pulling |
| CN112832241A (en) * | 2021-01-05 | 2021-05-25 | 北京建工土木工程有限公司 | Small-diameter rapid pile pulling device for civil engineering and application method thereof |
| CN112832241B (en) * | 2021-01-05 | 2022-04-15 | 北京建工土木工程有限公司 | Small-diameter rapid pile pulling device for civil engineering and application method thereof |
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Application publication date: 20171110 |