CN108360521A - The method for removing offshore platform pile foundation is pulled out in a kind of torsion - Google Patents
The method for removing offshore platform pile foundation is pulled out in a kind of torsion Download PDFInfo
- Publication number
- CN108360521A CN108360521A CN201810211739.5A CN201810211739A CN108360521A CN 108360521 A CN108360521 A CN 108360521A CN 201810211739 A CN201810211739 A CN 201810211739A CN 108360521 A CN108360521 A CN 108360521A
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- China
- Prior art keywords
- pile foundation
- offshore platform
- tugboat
- torsion
- horizontal
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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
-
- 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
Abstract
The present invention provides the method for removing offshore platform pile foundation is pulled out in a kind of torsion, belong to offshore platform Demolishing Technology field.It avoids the disadvantage that imderwater cutting pile foundation task difficulty is big, risk is high, long in time limit, and offshore platform pile foundation is quickly and effectively removed on the water surface.This method for dismounting applies torque by long horizontal beam by sea-going tug to stake top, and the loop wheel machine on tugboat is combined to apply vertical uplift force, and entire pile foundation is extracted completely.The method of the present invention significantly reduces the twisting resistance applied using lever principle, while the torque and uplift force applied reduces the anti-pulling capacity of pile foundation.The method of the present invention includes following step：A, tugboat at the top of horizontal just beam and pile foundation by being connected；B, apply torsional moment in stake top；C, apply vertical tension in stake top.This method for dismounting has the advantages that entirely to extract pile foundation under smaller pulling force.
Description
Technical field
The present invention relates to offshore platform demolition technique methods, especially the Demolishing Technology side of ocean offshore platform pile foundation
Method.
Background technology
It is that the exploitation of China's offshore oil is made that there are up to a hundred jacket offshore platforms, these platforms in China marine site at present
Significant contribution.Expire with being on active service, platform puts halt production aside as useless.It is provided in accordance with international practices with state's laws, stopping production, it is flat to put aside as useless
Platform will be removed.International regulations pro-gaze jacket is all removed, and this mode requires discarded offshore platform pile foundation that should cut to
Sea bed mud face 4m or less.The dismounting of jacket pile foundation is that longest, the maximum work of cost are taken in entire offshore platform demolishing process
Journey.Which kind of Demolition Scheme no matter is taken, a large amount of imderwater cutting operation is always related to.Pile foundation is cut at 4m under mud line, is needed
It to be required for blowing mud operation in the inside and outside patterning method of pile foundation, the former is in spud leg；The latter blows mud depth in the outside of spud leg
Not less than 5m dells.Imderwater cutting mode is very limited, and operation difficulty is big, risk is high, and underwater when completing primary cutting
Between it is longer, up to more than ten or twenties hours, be susceptible to engineering problem.
The dismounting that fast and effeciently carry out offshore platform pile foundation, avoid imderwater cutting Job Operations difficulty is big, risk is high,
Disadvantage long in time limit, this patent propose to pull out the method for removing offshore platform pile foundation in a kind of torsion.This method is led to by sea-going tug
Long horizontal beam applies torque to stake top, and the loop wheel machine on tugboat is combined to apply vertical uplift force, and entire pile foundation is pulled out completely
Go out.This method Job Operations on the water surface, can significantly improve operating efficiency, have the advantages that completely reliable, short time limit.
Invention content
Research Literature shows：In the case that pile foundation bears twisting resistance and uplift force at the same time, anti-pulling capacity will be notable
It reduces, applying smaller uplift force can integrally extract pile foundation.Its principle can be extracted by torsion grape wine stopper this
One existence general knowledge explains that only applying pulling force, we are difficult to extract stopper, but if we apply pulling force while rotating, then very
It is easy to extract stopper.
Based on this theoretical foundation, the present invention provides a kind of method pulled out in torsion and remove offshore platform pile foundation, this side
Method can be applied to the Demolition Construction operation of offshore platform pile foundation scene, fast and effeciently extract pile foundation, meet the requirement of specification.
The method of the present invention includes following step：
A：Sea-going tug at the top of horizontal just beam and pile foundation by being connected
The horizontal just beam one end length 10m-20m is connected by flexural pivot with tugboat tail portion；The other end is fixed on water by fixture
At the top of pile foundation on face；
B：Apply torsional moment
Tugboat applies torsional forces by horizontal just beam to pile foundation, and pile foundation is made to rotate；
C：Loop wheel machine applies vertical tension pile pulling to pile foundation
Loop wheel machine on tugboat is connected by wirerope with the lifting lug that stake top is arranged, and applies vertical uplift force to stake top, by pile foundation
It is entire to extract.
Illustrate advantages of the present invention below according to the working mechanism of the present invention：This method operation on the water surface need not appoint
What imderwater cutting operation improves operating efficiency；This method applies torque by long horizontal beam to pile foundation, is similar to and is twisted with spanner
Turn nut, using lever principle, the arm of force is longer, and the twisting resistance of application is smaller.Example：When pile foundation radius (0.5m) and horizontal beam length
When (10m) compares equal to 20, it is the 1/20 of pile foundation side-friction force so that pile foundation rotation is needed the twisting resistance applied；This method is right simultaneously
Offshore platform pile foundation applies torque and uplift force, significantly reduces the vertically pulling-resistant bearing capacity of pile foundation, can be under smaller pulling force
Pile foundation is entirely removed.
In short, the present invention provides a kind of method of economical and efficient for fast and effeciently removing for offshore platform pile foundation, profit
It is significantly reduced pile foundation anti-pulling capacity with lever principle, the common torque and uplift force of applying and entire pile foundation demolition is avoided into water
The technical barrier of lower cutting, good effect have substantive distinguishing features outstanding considerably beyond the prior art.
Description of the drawings
Fig. 1 is the schematic side view that the method for removing offshore platform pile foundation is pulled out in a kind of torsion of the present invention；
Fig. 2 is the schematic top plan view that the method for removing offshore platform pile foundation is pulled out in a kind of torsion of the present invention；
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in the figure：It is pulled out in a kind of torsion of the present invention in the method for removing offshore platform pile foundation, the rigid beam 2 of pile foundation 1, level,
Tugboat 3, fixture 4, lifting lug 5, loop wheel machine 6, wirerope 7, flexural pivot 8.
The method for removing offshore platform pile foundation is pulled out in a kind of torsion of the present invention, is included the following steps：
A：Sea-going tug 3 is connected by horizontal just beam 2 with 1 top of pile foundation
The size of horizontal just beam 2 is determined according to the horsepower of the diameter of pile foundation 1 and side friction and existing tugboat 3, it is horizontal
Rigid beam 2 is fixed on 1 top of pile foundation by fixture 4, and the other end is connected with flexural pivot 8 with 3 tail portion of tugboat；
B：Tugboat 3 applies torsional moment
Tugboat 3 applies torsional forces by horizontal just beam 2 to pile foundation 1, and pile foundation 1 is made to rotate；
C：Loop wheel machine 6 applies vertical tension pile pulling to pile foundation 1
Loop wheel machine 6 on tugboat is connected by wirerope 7 with the lifting lug 5 that stake top is arranged, and applies vertical tension to pile foundation 1.It is turning round
Under the collective effect of square and pulling force, pile foundation 1 is byed entirely to extract while rotating.
The method for removing offshore platform pile foundation is pulled out in a kind of torsion of the present invention to turn round pile foundation collective effect using lever principle
Square and pulling force significantly reduce the vertically pulling-resistant bearing capacity of pile foundation, can entirely extract pile foundation under smaller pulling force.The present invention
A kind of method of economical and efficient is provided for the dismounting of offshore platform pile foundation.
Claims (5)
1. pulling out the method for removing offshore platform pile foundation in a kind of torsion, which is characterized in that include the following steps：
A：Sea-going tug (3) at the top of horizontal just beam (2) and pile foundation (1) by being connected
The size of horizontal just beam (2) is determined according to the diameter of pile foundation (1) and side friction and existing tugboat (3) horsepower, it is horizontal
Rigid beam (2) is fixed on by fixture (4) at the top of pile foundation (1), and the other end is connected with flexural pivot (8) with tugboat (3) tail portion；
B：Tugboat (3) applies torsional moment
Tugboat (3) applies torsional forces by horizontal just beam (2) to pile foundation (1), and pile foundation (1) is made to rotate；
C：Loop wheel machine (6) applies vertical tension pile pulling to pile foundation (1)
Loop wheel machine (6) on tugboat is connected by wirerope (7) with the lifting lug (5) that stake top is arranged, and applies vertical tension to pile foundation (1),
Byed entirely to extract while rotating by pile foundation (1) under the collective effect of torque and vertical tension.
2. pulling out the method for removing offshore platform pile foundation in a kind of torsion according to claim 1, which is characterized in that described
The torsional moment that tugboat (3) applies pile foundation (1).
3. pulling out the method for removing offshore platform pile foundation in a kind of torsion according to claim 1, which is characterized in that described
Pile foundation (1) while bearing torque and vertical tension.
4. pulling out the method for removing offshore platform pile foundation in a kind of torsion according to claim 1, which is characterized in that described
Pile foundation (1) is pulled out in rotation.
5. pulling out the method for removing offshore platform pile foundation in a kind of torsion according to claim 1, which is characterized in that described
Horizontal just beam (2) applies torsional moment as the arm of force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211739.5A CN108360521B (en) | 2018-03-15 | 2018-03-15 | Method for dismounting offshore platform pile foundation by twisting and pulling up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211739.5A CN108360521B (en) | 2018-03-15 | 2018-03-15 | Method for dismounting offshore platform pile foundation by twisting and pulling up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360521A true CN108360521A (en) | 2018-08-03 |
| CN108360521B CN108360521B (en) | 2021-07-06 |
Family
ID=63000319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810211739.5A Active CN108360521B (en) | 2018-03-15 | 2018-03-15 | Method for dismounting offshore platform pile foundation by twisting and pulling up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108360521B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358452A (en) * | 2007-07-30 | 2009-02-04 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
| CN101858083A (en) * | 2010-06-22 | 2010-10-13 | 天津第三市政公路工程有限公司 | Low spatial pile pulling construction method and device of steel pipe pile in water |
| KR20120139895A (en) * | 2011-06-20 | 2012-12-28 | 광명기업주식회사 | Excavating agitation rod for piling with backfilling soil and method of piling thereof |
| CN103174141A (en) * | 2013-03-26 | 2013-06-26 | 青岛宝基利工程技术咨询有限公司 | Intertidal zone beam lower supporting frame steel pipe pile pulling-out device and method |
| CN205557520U (en) * | 2016-04-11 | 2016-09-07 | 冯仁良 | Novel pile -drawing machine |
| KR20160109674A (en) * | 2015-03-12 | 2016-09-21 | 한국가스공사 | Drawing apparatus for phc pile and drawing method for for phc pile thereof |
-
2018
- 2018-03-15 CN CN201810211739.5A patent/CN108360521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358452A (en) * | 2007-07-30 | 2009-02-04 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
| CN101858083A (en) * | 2010-06-22 | 2010-10-13 | 天津第三市政公路工程有限公司 | Low spatial pile pulling construction method and device of steel pipe pile in water |
| KR20120139895A (en) * | 2011-06-20 | 2012-12-28 | 광명기업주식회사 | Excavating agitation rod for piling with backfilling soil and method of piling thereof |
| CN103174141A (en) * | 2013-03-26 | 2013-06-26 | 青岛宝基利工程技术咨询有限公司 | Intertidal zone beam lower supporting frame steel pipe pile pulling-out device and method |
| KR20160109674A (en) * | 2015-03-12 | 2016-09-21 | 한국가스공사 | Drawing apparatus for phc pile and drawing method for for phc pile thereof |
| CN205557520U (en) * | 2016-04-11 | 2016-09-07 | 冯仁良 | Novel pile -drawing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108360521B (en) | 2021-07-06 |
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