CN109083117A - A kind of piling standing method of jack-up unit - Google Patents
A kind of piling standing method of jack-up unit Download PDFInfo
- Publication number
- CN109083117A CN109083117A CN201811136175.XA CN201811136175A CN109083117A CN 109083117 A CN109083117 A CN 109083117A CN 201811136175 A CN201811136175 A CN 201811136175A CN 109083117 A CN109083117 A CN 109083117A
- Authority
- CN
- China
- Prior art keywords
- platform
- spud leg
- spud
- piling
- jack
- Prior art date
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of piling standing methods of jack-up unit, it is characterised in that: include the following steps, at platform towage to predetermined operation, and decentralization spud leg to mud face；The posture that adjustment platform is acted using Single Pile, guarantees the trim and angle of heel of platform；Start lifting device, platform is slowly lifted, when the bottom surface of platform from the water surface suitably with a distance from when stop peaceful；It observes each spud leg for a period of time, determines and start pre- ballast after each spud leg is stablized.The present invention can pass through the pre- ballast basis operation of short period, so that during the foundation stress under platform leg shoe reaches lifting operation or spud leg shoe is born during severe storm maximum vertical load, to guarantee safety of the platform under normal operation or storm.Using effect of the present invention is good, use easy to spread.
Description
Technical field
The present invention relates to jack-up unit technical field, the piling more specifically to a kind of jack-up unit is stood
Method.
Background technique
Engineering platform with individual support leg is supported by the shoe of contact ocean bottom soil.Platform leg is in addition to being come from
Outside the vertical load that weight, changing load and the lifting torque of platform itself generate, also subject to by wind, wave, stream environmental condition
Caused horizontal load, these horizontal loads will lead to platform and generate tilting moment, this tilting moment can be to the spud leg of lower wind direction
Shoe generates Additional vertical load, which can cause sinking for spud leg shoe during severe storm, so as to cause platform hair
Raw inclination is toppled.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention provides a kind of piling standing method of jack-up unit, so that platform
During foundation stress under spud leg shoe reaches lifting operation or spud leg shoe is born during severe storm maximum is hung down
To load, to guarantee safety of the platform under normal operation or storm.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of piling standing method of jack-up unit, comprising the following steps:
Step 1, at platform towage to predetermined operation, decentralization spud leg to mud face；
Step 2 is acted the posture of adjustment platform using Single Pile, guarantees the trim and angle of heel of platform；
Step 3, start lifting device, platform is slowly lifted, when the bottom surface of platform from the water surface suitably with a distance from when stop
Peaceful；
Step 4 observes each spud leg for a period of time, determines and starts pre- ballast after each spud leg is stablized.
Preferably, in the step 4, pre- ballast the following steps are included:
A, two spud legs on one diagonal line are loaded by lifting device simultaneously, and observes the situation of two spud legs, if two
Spud leg occurs to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time；
B, the spud leg on another diagonal line is loaded by lifting device simultaneously, and observes the situation of two spud legs, if two
Spud leg occurs to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time；
C, successively two cornerwise spud legs are gradually loaded by turns, until the load of spud leg reaches the precompressed being calculated
Load；
D, after four pile leg precompressed reach requirement, platform is leveled, guarantees tilt angle, then keeps one section of this state
Time allows pile foundation to stablize.
It preferably,, can be in the platform close in advance when at by the platform towage to predetermined operation in the step 1
Position of the spud leg from seabed 1-2 meters is first transferred when being set at industry.
Preferably, in the step 2, the trim and angle of heel of the platform are respectively less than 0.5 °.
Preferably, in the step 3, the bottom surface of the platform is 0.8-1.2 meters with a distance from the water surface.
Preferably, in step a, b, increase the sustained load of each spud leg by 100- to spud leg load
200 tons, the sinking of the spud leg stable time is 8-12 minutes.
Preferably, in the step d, the tilt angle of the platform is less than 0.5 °.
The beneficial effects of the present invention are: piling standing is carried out to platform by this method, it can be pre- by the short period
Ballast basis operation, so that during the foundation stress under platform leg shoe reaches lifting operation or stake during severe storm
The maximum vertical load that leg shoe is born, to guarantee safety of the platform under normal operation or storm.The present invention uses
Effect is good, use easy to spread.
Detailed description of the invention
Fig. 1 is the flow diagram of the piling standing method of jack-up unit of the invention.
Fig. 2 is the flow diagram of the precompressed support method of the piling standing method of jack-up unit of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Please refer to attached drawing 1-2, a kind of piling standing method of jack-up unit of the present embodiment, comprising the following steps:
Step 1, at platform towage to predetermined operation, decentralization spud leg to mud face.Wherein, by the platform towage extremely
When at predetermined operation, position of the spud leg from seabed 1-2 meters can be first transferred when the platform is close at predetermined operation.
Step 2 is acted the posture of adjustment platform using Single Pile, guarantees the trim and angle of heel of platform.Wherein, institute
The trim and angle of heel for stating platform are respectively less than 0.5 °.
Step 3, start lifting device, platform is slowly lifted, when the bottom surface of platform from the water surface suitably with a distance from when stop
Peaceful.Wherein, the bottom surface of the platform is 0.8-1.2 meters with a distance from the water surface.Preferably, the bottom surface of the platform is from the water surface
Distance be 1 meter.
Step 4 observes each spud leg for a period of time, preferably, observing each spud leg and dipmeter 15 minutes.It determines described each
Spud leg starts pre- ballast after stablizing.Wherein, pre- ballast the following steps are included:
A, two spud legs on one diagonal line are loaded by lifting device simultaneously, and observes the situation of two spud legs, if two
Spud leg occurs to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time.Wherein, should make to spud leg load
The sustained load of each spud leg increases 100-200 tons, and the sinking of the spud leg stable time is 8-12 minutes.Under preferably,
Sedate fix time is 10 minutes.
B, the spud leg on another diagonal line is loaded by lifting device simultaneously, and observes the situation of two spud legs, if two
Spud leg occurs to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time.Wherein, should make to spud leg load
The sustained load of each spud leg increases 100-200 tons, and the sinking of the spud leg stable time is 8-12 minutes.Under preferably,
Sedate fix time is 10 minutes.
C, successively two cornerwise spud legs are gradually loaded by turns, until the load of spud leg reaches the precompressed being calculated
Load；
D, after four pile leg precompressed reach requirement, platform is leveled, guarantees tilt angle, then keeps one section of this state
Time allows pile foundation to stablize.Preferably, the tilt angle of the platform is less than 0.5 °.
The piling standing method of jack-up unit based on above-mentioned technical characteristic can pass through the pre- ballast base of short period
Plinth operation, so that during the foundation stress under platform leg shoe reaches lifting operation or spud leg shoe during severe storm
The maximum vertical load born, to guarantee safety of the platform under normal operation or storm.Using effect of the present invention is good,
Use easy to spread.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of piling standing method of jack-up unit, it is characterised in that: the following steps are included:
Step 1, at platform towage to predetermined operation, decentralization spud leg to mud face；
Step 2 is acted the posture of adjustment platform using Single Pile, guarantees the trim and angle of heel of platform；
Step 3, start lifting device, platform is slowly lifted, when the bottom surface of platform from the water surface suitably with a distance from when stop it is peaceful
Platform；
Step 4 observes each spud leg for a period of time, determines and starts pre- ballast after each spud leg is stablized.
2. the piling standing method of jack-up unit as described in claim 1, it is characterised in that: in the step 4, precompressed
Carry the following steps are included:
A, two spud legs on one diagonal line are loaded by lifting device simultaneously, and observes the situation of two spud legs, if two spud legs
Occur to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time；
B, the spud leg on another diagonal line is loaded by lifting device simultaneously, and observes the situation of two spud legs, if two spud legs
Occur to sink then to sink to stablizing to it and continues to be depressed into no sinking in advance after a certain period of time；
C, successively two cornerwise spud legs are gradually loaded by turns, until the load of spud leg reaches the pre- ballast being calculated
Lotus；
D, after four pile leg precompressed reach requirement, platform is leveled, guarantees tilt angle, when then keeping one section of this state
Between, allow pile foundation to stablize.
3. the piling standing method of jack-up unit as described in claim 1, it is characterised in that: in the step 1, inciting somebody to action
When at the platform towage to predetermined operation, the spud leg can be first transferred when the platform is close at predetermined operation from seabed 1-
2 meters of position.
4. the piling standing method of jack-up unit as described in claim 1, it is characterised in that: described in the step 2
The trim and angle of heel of platform are respectively less than 0.5 °.
5. the piling standing method of jack-up unit as described in claim 1, it is characterised in that: described in the step 3
The bottom surface of platform is 0.8-1.2 meters with a distance from the water surface.
6. the piling standing method of jack-up unit as claimed in claim 2, it is characterised in that: in step a, b, give institute
Stating spud leg load increases the sustained load of each spud leg by 100-200 tons, and the sinking of the spud leg stable time is 8-
12 minutes.
7. the piling standing method of jack-up unit as claimed in claim 2, it is characterised in that: described flat in the step d
The tilt angle of platform is less than 0.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136175.XA CN109083117A (en) | 2018-09-28 | 2018-09-28 | A kind of piling standing method of jack-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811136175.XA CN109083117A (en) | 2018-09-28 | 2018-09-28 | A kind of piling standing method of jack-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109083117A true CN109083117A (en) | 2018-12-25 |
Family
ID=64842633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811136175.XA Pending CN109083117A (en) | 2018-09-28 | 2018-09-28 | A kind of piling standing method of jack-up unit |
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| Country | Link |
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| CN (1) | CN109083117A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010891Y (en) * | 2006-12-18 | 2008-01-23 | 中国海洋石油总公司 | Self-elevating producing and oil-storing platform |
| CN102071690A (en) * | 2010-12-08 | 2011-05-25 | 中国石油大学(北京) | Offshore self-elevating drilling platform pile pitching and pile pulling automatic control device and method |
| CN107142918A (en) * | 2017-04-06 | 2017-09-08 | 华电重工股份有限公司 | The marine floading condition operational method of self-elevating work platform half |
| CN107268558A (en) * | 2016-04-08 | 2017-10-20 | 中国国际海运集装箱(集团)股份有限公司 | The precompressed piling method of four spud leg jack-up units |
-
2018
- 2018-09-28 CN CN201811136175.XA patent/CN109083117A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010891Y (en) * | 2006-12-18 | 2008-01-23 | 中国海洋石油总公司 | Self-elevating producing and oil-storing platform |
| CN102071690A (en) * | 2010-12-08 | 2011-05-25 | 中国石油大学(北京) | Offshore self-elevating drilling platform pile pitching and pile pulling automatic control device and method |
| CN107268558A (en) * | 2016-04-08 | 2017-10-20 | 中国国际海运集装箱(集团)股份有限公司 | The precompressed piling method of four spud leg jack-up units |
| CN107142918A (en) * | 2017-04-06 | 2017-09-08 | 华电重工股份有限公司 | The marine floading condition operational method of self-elevating work platform half |
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Application publication date: 20181225 |