CN104652391A - Self-elevating platform dismantlement method suitable for lifting function failure circumstance - Google Patents
Self-elevating platform dismantlement method suitable for lifting function failure circumstance Download PDFInfo
- Publication number
- CN104652391A CN104652391A CN201310598740.5A CN201310598740A CN104652391A CN 104652391 A CN104652391 A CN 104652391A CN 201310598740 A CN201310598740 A CN 201310598740A CN 104652391 A CN104652391 A CN 104652391A
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- CN
- China
- Prior art keywords
- jack
- platform
- steel strand
- construction
- ship
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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
- 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
-
- 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
- E02B2017/0052—Removal or dismantling of offshore structures from their offshore location
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a self-elevating platform dismantlement method suitable for a lifting function failure circumstance. The self-elevating platform dismantlement method suitable for the lifting function failure circumstance drops a platform and lifts a pile leg and sediments by using a steel strand jack device installed on the platform pile leg in combination with a constructing ship to unload, achieves integrated dismantlement and later recycling of the platform, and has the advantages of being low in construction cost and small in construction risk.
Description
Technical field
The present invention relates to a kind of jack-up unit method for dismounting, particularly about a kind of jack-up unit method for dismounting being applicable to elevating function and losing efficacy.
Background technology
Installation, the dismounting of offshore platform and chunk are high cost, high risk offshore construction project, dismounting for the jack-up unit of elevating function inefficacy need use large-scale floating crane remove according to the ocean platform method for dismounting of routine, and following three aspect problems are existed for the use of large-scale floating crane: one, in the platform removal construction in marginal oil field or Tan Hai marine site, large-scale floating crane cannot enter more greatly the more shallow construction marine site of the depth of water due to drinking water; Two, use crane barge to remove platform, need cut platform, cannot recycle after platform removal; Three, large-scale floating crane hiring cost is high.
Present patent application proposes a kind of jack-up unit method for dismounting being applicable to elevating function and losing efficacy just in this context.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming prior art existence, and a kind of jack-up unit method for dismounting being applicable to elevating function and losing efficacy is provided, by the steel strand jack device installed on platform leg, coordinative construction boats and ships row carried, carry out that platform is transferred, the lifting of spud leg and precipitation, the recycling in implementation platform overall pulling down and later stage, has construction cost low, the feature that construction risk is little.
The object of the invention is to be realized by following technical scheme:
Be applicable to the jack-up unit method for dismounting that elevating function lost efficacy, it is characterized in that: described dismounting step comprises:
1. select construction ship, determine to load position onto ship;
2. remove jack-up unit original lifting gear that lost efficacy, at each platform leg place, jack platform be installed, and above jack platform the several anchor point of uniform installation, the several steel strand jack device of uniform installation below jack platform;
3. start steel strand jack, remove jack-up unit self-locking device, control steel strand jack, platform is dropped on construction ship, and platform and construction ship are rigidly connected;
4. remove the steel strand jack below jack platform, and be mounted to above jack platform by steel strand jack, anchor point is mounted to the spud leg place below jack platform;
5. start steel strand jack, carry out construction ship row and carry, utilize construction ship to arrange the trim of carrying, precipitation is extracted from mud;
6. to steel strand jack weld anchor solid point in interval on spud leg of uniform installation, carry out steel strand lifting, promote below anchor point to jack platform, to steel strand jack weld anchor solid point on spud leg of not carrying out anchor point welding, tension steel strand, and the anchor point removing the interval welding of institute in early stage, carry out steel strand lifting, circulate successively, be promoted to bottom construction ship to precipitation;
7. construction ship transport jack-up unit entirety leaves construction marine site.
Beneficial effect of the present invention: the present invention is owing to adopting technique scheme, a kind of jack-up unit method for dismounting being applicable to elevating function and losing efficacy is provided, by the steel strand jack device installed on platform leg, coordinative construction boats and ships row carried, carry out that platform is transferred, the lifting of spud leg and precipitation, the recycling in implementation platform overall pulling down and later stage, has construction cost low, the feature that construction risk is little.
Below in conjunction with drawings and Examples, the present invention will be further described.
Accompanying drawing illustrates:
Fig. 1 is ship's fix schematic diagram of the present invention;
Fig. 2 is that schematic diagram transferred by platform of the present invention;
Fig. 3 is that the present invention precipitates mud extraction schematic diagram;
Fig. 4 is that the present invention precipitates lifting schematic diagram;
Fig. 5 is platform discharging mechanism schematic diagram of the present invention;
Fig. 6,7 precipitates hoisting mechanism schematic diagram for the present invention.
Major label description in figure:
1-spud leg; 2-platform; 3-construction ship; 4-precipitation; 5-anchor point bearing; 6-anchor point; 7-steel strand; 8-jack platform; 9-jack.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the present invention is described in detail.
As shown in Figure 1, according to the position of centre of gravity of the spacing between each spud leg 1 of jack-up unit and platform 2, the construction ship 3 selecting size and carrying capacity all to meet the demands, is then checked by stability, selects optimum shipment position;
As shown in Figure 2, remove the original lifting gear that lost efficacy of jack-up unit, at each platform leg 1 place, jack platform 8 is installed, and above jack platform 8 uniform installation 6 anchor points 6, uniform installation 6 steel strand jack devices below jack platform 8;
As shown in Figure 5, jack 9 is connected by steel strand 7 with the anchor point 6 being welded in the anchor point bearing 5 being distributed on spud leg 1 by jack platform 8;
As shown in Figure 3, after steel strand jack 9 and anchor point 6 all install, be well placed sleeper aboard ship, then jack 9 is started, make jack 9 uniform stressed on spud leg 1, this process, by the sensor monitoring stressing conditions on jack 9, then carries out dismounting or the cutting of platform self-locking device, owing to the stressed of platform 2 having been passed to jack 9, the rear platform 2 be therefore removed when platform self-locking device has still kept original position.The jack 9 controlling spud leg 1 makes platform 2 steadily drop on the sleeper of construction ship 3, then platform 2 and construction ship 3 is rigidly connected.Start jack 9 and make it have pretightning force, then carry out boats and ships row and carry, 4 precipitations are pulled out by the trim utilizing boats and ships row to carry from mud;
As shown in Fig. 4,6,7, to steel strand jack 9 interval weld anchor solid point 6 on spud leg 1 of uniform installation, carry out steel strand 7 to promote, promote below anchor point 6 to jack platform 8, to steel strand jack 9 weld anchor solid point 6 on spud leg 1 of not carrying out anchor point welding, tension steel strand 7, and remove the anchor point 6 of institute in early stage interval welding, carry out steel strand 7 to promote, circulate successively, be promoted to bottom construction ship 3 to precipitation 4, construction ship 3 transports jack-up unit entirety and leaves construction marine site.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (1)
1. be applicable to the jack-up unit method for dismounting that elevating function lost efficacy, it is characterized in that: described dismounting step comprises:
1. select construction ship, determine to load position onto ship;
2. remove jack-up unit original lifting gear that lost efficacy, at each platform leg place, jack platform be installed, and above jack platform the several anchor point of uniform installation, the several steel strand jack device of uniform installation below jack platform;
3. start steel strand jack, remove jack-up unit self-locking device, control steel strand jack, platform is dropped on construction ship, and platform and construction ship are rigidly connected;
4. remove the steel strand jack below jack platform, and be mounted to above jack platform by steel strand jack, anchor point is mounted to the spud leg place below jack platform;
5. start steel strand jack, carry out construction ship row and carry, utilize construction ship to arrange the trim of carrying, precipitation is extracted from mud;
6. to steel strand jack weld anchor solid point in interval on spud leg of uniform installation, carry out steel strand lifting, promote below anchor point to jack platform, to steel strand jack weld anchor solid point on spud leg of not carrying out anchor point welding, tension steel strand, and the anchor point removing the interval welding of institute in early stage, carry out steel strand lifting, circulate successively, be promoted to bottom construction ship to precipitation;
7. construction ship transport jack-up unit entirety leaves construction marine site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598740.5A CN104652391B (en) | 2013-11-25 | 2013-11-25 | A kind of jack-up unit method for dismounting that is applicable to elevating function inefficacy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598740.5A CN104652391B (en) | 2013-11-25 | 2013-11-25 | A kind of jack-up unit method for dismounting that is applicable to elevating function inefficacy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104652391A true CN104652391A (en) | 2015-05-27 |
| CN104652391B CN104652391B (en) | 2016-05-18 |
Family
ID=53243985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310598740.5A Active CN104652391B (en) | 2013-11-25 | 2013-11-25 | A kind of jack-up unit method for dismounting that is applicable to elevating function inefficacy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104652391B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1201296A (en) * | 1983-02-07 | 1986-03-04 | Sherman B. Wetmore | Monopod jackup drilling system |
| CN101196177A (en) * | 2006-12-08 | 2008-06-11 | 天津市海恩海洋工程技术服务有限公司 | Installation construction method for wind generator set on the sea |
| CN102094429A (en) * | 2011-01-12 | 2011-06-15 | 广东省长大公路工程有限公司 | Lowering control method of double-wall steel cofferdam |
| CN202000328U (en) * | 2011-03-21 | 2011-10-05 | 中国船舶工业集团公司第七○八研究所 | Pin-type lifting device with hydraulic cylinder jacking ring beam |
-
2013
- 2013-11-25 CN CN201310598740.5A patent/CN104652391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1201296A (en) * | 1983-02-07 | 1986-03-04 | Sherman B. Wetmore | Monopod jackup drilling system |
| CN101196177A (en) * | 2006-12-08 | 2008-06-11 | 天津市海恩海洋工程技术服务有限公司 | Installation construction method for wind generator set on the sea |
| CN102094429A (en) * | 2011-01-12 | 2011-06-15 | 广东省长大公路工程有限公司 | Lowering control method of double-wall steel cofferdam |
| CN202000328U (en) * | 2011-03-21 | 2011-10-05 | 中国船舶工业集团公司第七○八研究所 | Pin-type lifting device with hydraulic cylinder jacking ring beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104652391B (en) | 2016-05-18 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200825 Address after: 264200 room 810, floor 8, building a, haiyucheng, No. 3-2, Shichang Avenue, Huancui District, Weihai City, Shandong Province Patentee after: Weihai Haien blue sea aquaculture Co.,Ltd. Address before: 300384 Tianjin City, Nankai District Huayuan Industrial Park Road No. 1 Industrial Park E block six layer Patentee before: NEPTUNE OFFSHORE ENGINEERING DEVELOPMENT Co.,Ltd. |