CN105523477B - A kind of method that spud leg pile extension is carried out using 3000t crane barges - Google Patents
A kind of method that spud leg pile extension is carried out using 3000t crane barges Download PDFInfo
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- CN105523477B CN105523477B CN201610008765.9A CN201610008765A CN105523477B CN 105523477 B CN105523477 B CN 105523477B CN 201610008765 A CN201610008765 A CN 201610008765A CN 105523477 B CN105523477 B CN 105523477B
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- spud leg
- crane
- pile extension
- block
- hook
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of method that spud leg pile extension is carried out using 3000t crane barges, under the self-elevating drilling platform of ocean after the good stake of water drilling, the segmentation of two truss framed legs is first closed up on building berth to a block (high about 70 meters, 13 meters of the triangle length of side, always weigh about 550 tons) in advance；Then, the rope tool and rigging of lifting are prepared；Finally, spud leg block is hoisted to drilling platforms at building berth using the auxiliary hook (safe load is 750t) of 3000t crane barges and encloses Jing Chu, crane barge is positioned by tugboat and hawser, spud leg block lower end starts to be segmented top wielding neck with previous spud leg, after after block firm welding, hoisting appliance can be removed.The spud leg block pile extension method of the present invention, efficiently reduces high-altitude built, welding, carrying of spud leg pile extension etc. and does one's assignment, about 100 meters high from the ground；Meanwhile, crane barge handling number of times reduces half；The reasonable setting of suspension centre, it is ensured that spud leg block uniform force；The method both ensures safety work, and production cost is substantially reduced again, it is ensured that the build guality of spud leg.
Description
Technical field
High-altitude handling, positioning, assembling, welding etc. are carried out on waters the present invention relates to the large-tonnage works of heavy construction
A kind of operation, and in particular to method that spud leg pile extension is carried out using 3000t crane barges.
Background technology
With the rise of petroleum industry, many shipyards both domestic and external, which are all competed, undertakes the construction of self-elevating drilling platform, its cost pole
Height, drilling well and lifestyle device are a lot.Spud leg is the important support and lifting structure of self-elevating drilling platform, the build guality of spud leg
The security of drilling platforms is directly influenced, construction of the specification both domestic and external to spud leg has strict demand, add and apply indirectly
Work difficulty.In addition, the size and weight of spud leg are larger, such as 400 feet of self-elevating drilling platforms have 3 pile legs, and parameter is height
About 165 meters, 13 meters of the triangle length of side, always weigh about 1300 tons.Due to by plant area's gantry crane lift heavy and hang it is high limited, typically will be single
Spud leg is divided into 4 to 6 segmentations and individually built, and then erects in sequence to close up successively by spud leg segmentation.General feelings
Under condition, two segmentations of spud leg bottom are closed up with gantry crane handling on land；Several segmentations are sharp after after the stake of platform launching station afterwards
Closed up with crane barge successively handling.In the past, when many shipyards run into crane barge pile extension, height, lift heavy is hung by crane barge, limiting for width is hung
System, usually by spud leg segmentation successively independent handling pile extension, the cost of each one segmentation of handling is very high.
Accordingly, it is desirable to provide a kind of new technical scheme solves the above problems.
The content of the invention
Limited for the spud leg of self-elevating drilling platform in the prior art due to the high and lift heavy that hangs by loop wheel machine, it is impossible to
Complete on land closing up for all spud legs segmentation, the remaining spud leg segmentation in top need to be after utilizing crane barge water after water under drilling platforms
On situation about closing up, the remaining spud leg segmentation in top is more, and the number of times that operation is closed up in crane barge handling is more, the cost accordingly produced
And operation danger is considerably increased.
In order to solve the above technical problems, the present invention provides a kind of method that spud leg pile extension is carried out using 3000t crane barges, specifically
Comprise the following steps：
（1）Spud leg is segmented on the building berth under 900t gantry cranes and closes up into spud leg block in advance：Laid closing up place in advance
Steel plate, by bottom spud leg handling subsection to the steel plate laid, using gantry crane by top spud leg handling subsection to bottom spud leg
The top of segmentation, after closing up ability to speak and meeting required precision away from gap, perpendicularity, carries out weld preheating and simultaneously welds sealing horse plate,
During sealing horse plate welding, it is ensured that docking port has the t of 60t ± 5 load, 1/2 welding capacity is reached when closing up mouth rack welding
When, you can decoupling device；
（2）In place, suspension arm variable-amplitude is adjusted to predetermined angular 3000t crane barges ballast, is hung and is matched somebody with somebody hoisting rig, floating using 3000t
Hang auxiliary hook spud leg block be hoisted to drilling platforms at building berth and enclose Jing Chu, by anchor hawser system on ship by crane barge actual displacement extremely
Pre- to hang above spud leg, hook vertically declines lifting；
（3）Lifting spud leg leaves ground, and original place is rotated to an angle by the cable wind rope set in advance, makes its main string
Pipe direction is consistent with precalculated position；
（4）Hook is slowly promoted to intended height, is promoted to pile extension state hook away from 165 ± 2m of the water surface, change angle
69°-69.66°；
（5）Crane barge enters after positioning of being anchored behind predetermined pile extension region, the crane barge that anchored, and passes through each anchor around folding and unfolding
Chain length, is shifted to set direction, when spud leg, which is moved to, to be closed up above mouth, should first ensure that at least one cable wind rope entrance
Inside spud leg, spud leg direction is aligned substantially by cable wind rope in the workmen for closing up platform；
（6）Spud leg is accurately positioned：Closing up Kou Chu, tightened up each to anchor chain, lying prone arm by hook, luffing under crawl just can essence
It is determined that position；
（7）Spud leg folding sealing：After closing up ability to speak and meeting required precision away from gap, perpendicularity, weld preheating is carried out simultaneously
Sealing horse plate is welded, during sealing horse plate welding, it is ensured that docking port has the t of 120t ± 5 load, and last 3 suspension centres are one by one
Carry out decoupling device.
Step（2）In, suspension arm variable-amplitude is adjusted to 69 ° -69.66 ° of predetermined angular.
A block is closed up into most latter two segmentation of the top of spud leg in advance on land, makes full use of the excellent of 3000t crane barges
Gesture, is hoisted to the Jing Chu that encloses of drilling platforms, carries out pile extension operation waterborne.Equivalent to disposably by two spud leg handling subsections
Close up, and the abutment joint on land by two segmentations is welded and checked, and total crane barge handling number of times both was reduced into one
Half, also reduce the work high above the ground waterborne of half.
Beneficial effects of the present invention：The present invention is segmented dependence of the afloat shipsection joining method for crane barge ability for spud leg, fully
Using the handling ability of crane barge, close up into a block by the top corresponding spud leg of remaining each two is pre-staged, equivalent to will
Originally the operations number in high-altitude halves, and can significantly reduce the cycle of spud leg segment folding, it will be apparent that save spud leg life
Construction cost is produced, the frequency of live work high above the ground is greatly reduced, interference of the bad natural cause to spud leg folding is reduced,
Ensure the build guality of spud leg, the construction period of itself whole formula drilling platforms can be shortened.
Brief description of the drawings
Fig. 1 is that spud leg block suspension centre arranges schematic diagram.
Fig. 2 is that spud leg block suspender chooses schematic diagram.
Fig. 3 is crane barge handling route schematic diagram of the present invention.
Fig. 4 is that crane barge of the present invention drags schematic diagram to predetermined pile extension position.
Fig. 5 is spud leg block of the present invention pile extension schematic diagram waterborne.
1st, spud leg block, 2, hanger, 3, crane barge suspension hook, 4, annular suspender belt, 5, annular suspender belt, 6, expanded letter shackle, 7, guy
Rope, 8, main chord tube, 9, crane barge auxiliary hook.
Embodiment
In order to deepen the understanding of the present invention, below the invention will be further described, the embodiment be only used for explain this
Invention, does not constitute the restriction to protection scope of the present invention.
A kind of method that spud leg pile extension is carried out using 3000t crane barges of the present invention, as shown in figure 1, in advance in spud leg block 1
6 special 100t hangers 2 are welded at the top of upper segment, with a distance from top about 10m, are that crane barge suspension hook 3 is positioning pile extension
When short transverse on regulation reserve surplus.
As shown in Fig. 2 before the handling of spud leg block 1, preparing these suspenders in advance：200t enlightening Nimas high intensity annular suspender belt 4,
Joint length 10m, totally 3；100t enlightening Nimas high intensity annular suspender belt 5, joint length 6m, totally 3；110t high intensity expanded letters are unloaded
Button 6, totally 6.
Two high about 35 meters, 13 meters of the triangle length of side, the spud leg of about 270 tons of weight are segmented on the building berth under 900t gantry cranes pre-
Close up into one high about 70 meters, 13 meters of the triangle length of side, the spud leg block of about 550 tons of weight.
Close up main flow in advance：Close up place pre- and lay 30mm steel plates, because spud leg segmentation bottom is contacted with ground
Area less than 1 square metre, the pressure that ground is born is very big, and the steel plate of laying can be by pressure dissipation；Bottom spud leg is segmented profit
It is hoisted to 900t on the steel plate laid, draws 3 anti-dumping wind ropes after leveling at triangle, prevents it runs into strong wind and toppled over from causing
Peril；In advance in the upper end of segmentation steel pipe frame erection construction platform.Using 900t gantry cranes by top spud leg handling subsection
The top being segmented to bottom spud leg, hoisting commanding is responsible for ordering to be accurately positioned, and now should slow down what suspension hook was moved downward as far as possible
Speed；Workmen at spud leg folding mouthful carries out pile extension preparation, sets put the construction work such as hydraulic jack, sealing horse plate well in advance
Tool；After closing up ability to speak and meeting required precision away from gap, perpendicularity etc., carry out weld preheating and simultaneously weld sealing horse plate, sealing horse
During plate welding, it is ensured that docking port has 60t or so load, i.e. gib head stress about 200t；Close up mouth rack welding to reach
During 1/2 welding capacity, you can decoupling device, 3 suspension centres are carried out one by one；After the completion of rack welding, down tube in bulk, outfititem, pile pipe is rushed
Deng.Quality examination is completed and after corresponding material preparation, block is hoisted near the firm harbour of ground using gantry crane.
In place, suspension arm variable-amplitude is adjusted to predetermined angular crane barge ballast（69.66 ° of maximum is adjusted to as far as possible, so as to accurate in spud leg
The secondary luffing operation of expansion can be done in positioning, the dual adjustment of horizontal range and height spacing can be so completed simultaneously）, hang with lifting rope
Tool, such as Fig. 2 shows, spud leg block is hoisted into drilling platforms at building berth using 3000t crane barges auxiliary hook 9 (safe load is 750t)
Jing Chu is enclosed, heavy industry is played on the bank and is ordered commander, is responsible for operation on ship, by anchor hawser system by crane barge actual displacement to hanging in advance on spud leg
Side, hook vertically declines, and slightly lifting by crane stress and observing adjustment makes 3 to each suspender belt stress balance, and ensures stake after lifting as far as possible
Leg is vertical and bottom closes up the horizontal saliva of mouth and put down, and facilitates high-altitude pile extension pairing precision controlling.
As shown in figure 3, lifting spud leg leaves ground 1m or so, original place carries out rotation one by the cable wind rope 7 set in advance
Determine angle, make its main chord tube 8 towards probably consistent with precalculated position, reduce high-altitude and significantly rotate adjustment positioning.
Play heavy industry commander on the bank to order, hook is slowly promoted to intended height（It is recommended that being promoted to pile extension state hook away from water
Face about 165m, 69.66 ° of change angle）, and method of ship floating condition is observed, incline in length and breadth with reference to stowage requirement guarantee not overproof.
3 prepared tugboats require in place according to pilot, and anchor boat plays following current, the stern anchor of countercurrent direction successively, and will
3000t crane barges depart from harbour, and adjustment direction enters main channel, are dragged to predetermined pile extension position, as shown in Figure 4.
Crane barge enter predetermined pile extension region after, according to annex cast anchor schematic diagram carry out anchoring positioning, when casting anchor in principle first
Two anchors in top stream direction are thrown, two anchors of countercurrent direction are finally thrown；Anchor after crane barge, passed through each anchor around folding and unfolding
Chain length, is shifted to set direction, when spud leg is moved to substantially to be closed up above mouth, should first ensure that at least one cable wind rope
7 enter inside spud leg, are aligned in spud leg direction substantially by cable wind rope in the workmen for closing up platform.
Spud leg is accurately positioned：Closing up Kou Chu, playing heavy industry commander and be responsible for ordering to be accurately positioned, should now reduce as far as possible floating
The left and right action hung, is tightened up each to anchor chain, and arm is lain prone with regard to that can be accurately positioned spud leg folding construction simultaneously by hook, luffing under crawl
Personnel carry out pile extension preparation, set put the construction tools such as hydraulic jack, sealing horse plate well in advance.
Spud leg folding sealing：After closing up ability to speak and meeting required precision away from gap, perpendicularity etc., carry out weld preheating and simultaneously weld
Sealing horse plate is connect, during sealing horse plate welding, it is ensured that docking port has 120t or so load, i.e. gib head stress about 430t,
Fluctuation tide is completed to crane barge heave and the influence of gib head stress by adjusting ascending, descending gib head.Remaining pile extension works and above-mentioned
The pre- flow of closing up of segmentation is similar, is no longer described in detail, as shown in Figure 5.
Decoupling device：Decoupling device work should be completed by the professional for obtaining related operation certificate（Spider-man）, decoupling device answers 3 points
Carry out one by one, first pluck what is unloaded close to crane barge side in principle, finally pluck unload above and below at outmost point, a single point two suspension centres should be by
Under supreme pluck one by one unload.
So far, spud leg pile extension crane barge operation is basically completed, and is unmoored using anchor boat, tugboat traction crane barge to quayside
Domain is anchored positioning again, lifts next spud leg block, then repeat more than action complete the pile extension work of other spud legs.
For above-mentioned key step, each step is both needed to detailed design and assessment, can implement after confirmation is errorless.For
The spud leg of different size, suspender can do appropriate adjustment.
Claims (2)
1. a kind of method that spud leg pile extension is carried out using 3000t crane barges, it is characterised in that specifically include following steps：
（1）Spud leg is segmented on the building berth under 900t gantry cranes and closes up into spud leg block in advance：Close up place pre- and lay steel plate,
By on bottom spud leg handling subsection to the steel plate laid, top spud leg handling subsection to bottom spud leg is segmented using gantry crane
Top, after closing up ability to speak and meeting required precision away from gap, perpendicularity, carries out weld preheating and simultaneously welds sealing horse plate, sealing horse
During plate welding, it is ensured that docking port has the t of 60t ± 5 load, when close up mouth rack welding reach 1/2 welding capacity when, i.e.,
Can decoupling device；
（2）In place, suspension arm variable-amplitude is adjusted to predetermined angular 3000t crane barges ballast, is hung and is matched somebody with somebody hoisting rig, utilizes 3000t crane barge pairs
Spud leg block is hoisted to drilling platforms and encloses Jing Chu by hook at building berth, by anchor hawser system on ship by crane barge actual displacement to hanging in advance
Above spud leg, hook vertically declines lifting；
（3）Lifting spud leg leaves ground, and original place is rotated to an angle by the cable wind rope set in advance, makes its main chord tube court
To consistent with precalculated position；
（4）Hook is slowly promoted to intended height, is promoted to pile extension state hook away from 165 ± 2m of the water surface, and 69 ° of change angle-
69.66°；
（5）Crane barge enters after positioning of being anchored behind predetermined pile extension region, the crane barge that anchored, and passes through each cable-length around folding and unfolding
Degree, is shifted to set direction, when spud leg, which is moved to, to be closed up above mouth, should first ensure that at least one cable wind rope enters spud leg
Inside, is aligned in spud leg direction by cable wind rope in the workmen for closing up platform substantially；
（6）Spud leg is accurately positioned：Closing up Kou Chu, tightened up each to anchor chain, just can accurately determined by the arm of lying prone of hook, luffing under crawl
Position；
（7）Spud leg folding sealing：After closing up ability to speak and meeting required precision away from gap, perpendicularity, carry out weld preheating and simultaneously weld
Sealing horse plate, during sealing horse plate welding, it is ensured that docking port has the t of 120t ± 5 load, last 3 suspension centres are carried out one by one
Decoupling device.
2. a kind of method that spud leg pile extension is carried out using 3000t crane barges according to claim 1, it is characterised in that：Step
（2）In, suspension arm variable-amplitude is adjusted to 69 ° -69.66 ° of predetermined angular.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610008765.9A CN105523477B (en) | 2016-01-08 | 2016-01-08 | A kind of method that spud leg pile extension is carried out using 3000t crane barges |
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| CN201610008765.9A CN105523477B (en) | 2016-01-08 | 2016-01-08 | A kind of method that spud leg pile extension is carried out using 3000t crane barges |
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| CN105523477B true CN105523477B (en) | 2017-09-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106759202A (en) * | 2016-12-16 | 2017-05-31 | 江苏大津重工有限公司 | A kind of spud leg pile extension under water technique for broken stone pile offshore engineering platform |
| CN108930260A (en) * | 2017-05-23 | 2018-12-04 | 烟台中集来福士海洋工程有限公司 | The installation method of jack-up unit spud leg |
| CN107628537B (en) * | 2017-10-19 | 2019-06-04 | 中船黄埔文冲船舶有限公司 | A kind of spud leg hanging method using secondary lever principle |
| CN108532604A (en) * | 2018-03-07 | 2018-09-14 | 江苏龙源振华海洋工程有限公司 | A kind of steady stake platform construction technique |
| CN108480873A (en) * | 2018-06-01 | 2018-09-04 | 南通振华重型装备制造有限公司 | A kind of folding method of jack up wind-powered electricity generation mounting platform spud leg epimere and spud leg hypomere |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2308572C1 (en) * | 2006-03-13 | 2007-10-20 | Открытое акционерное общество "Центральное конструкторское бюро "Коралл" | Method for self-elevating offshore platform improvement |
| CN100523388C (en) * | 2007-10-18 | 2009-08-05 | 大连船舶重工集团有限公司 | Large-scale trussed-beam spud leg waterborne transmitting and mounting method |
| CN101845831B (en) * | 2009-12-23 | 2011-12-07 | 中铁大桥局集团第一工程有限公司 | Deepwater pile extension technology |
| CN102849185B (en) * | 2012-09-18 | 2015-01-21 | 中国石油集团渤海石油装备制造有限公司 | Pile leg installation method for self-elevating drilling platform |
| CN104929097B (en) * | 2014-09-28 | 2017-04-12 | 南通振华重型装备制造有限公司 | 300-foot self-elevating drilling platform spud leg and shoe segmented carrying method |
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