CN104805814A - Self-elevating platform pile leg mounting method - Google Patents
Self-elevating platform pile leg mounting method Download PDFInfo
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- CN104805814A CN104805814A CN201410201333.0A CN201410201333A CN104805814A CN 104805814 A CN104805814 A CN 104805814A CN 201410201333 A CN201410201333 A CN 201410201333A CN 104805814 A CN104805814 A CN 104805814A
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Abstract
The invention provides a self-elevating platform pile leg mounting method which includes the steps: positioning and floating a main hull with built base pile leg sections in a dry dock; keeping the base pile leg sections vertically static relative to the main hull, gradually lifting the pile leg sections to be mounted to a folding port by a sea crane, and positioning and welding the pile leg sections until the pile leg sections on the main hull reach a preset height. The sea crane is positioned at a designated position in an open sea area of the dry dock. Lifting of the pile leg and standing are omitted, and construction period is shortened. As both the main hull and the sea crane float, relative positions of the main hull and the sea crane float can be adjusted, and the pile leg is conveniently folded.
Description
Technical field
The present invention relates to the construction applications of jack-up unit, particularly a kind of mounting method of jack-up unit spud leg.
Background technology
According to the development trend of jack-up unit in current world wide, the construction height of jack-up unit spud leg will be more and more higher, and the jack-up unit of operating water depth scope 400 feet, 500 feet will become the main product of jack up drilling platform the coming years.Jack-up unit generally comprises main hull and relative to three truss framed legs of main hull lifting, during platform operations, can reach seabed and stand on sea bed and support main hull, make main hull and sea have certain distance under spud leg.
Jack-up unit is when building, and namely need spud leg to be installed on main hull, along with the increase of the operating water depth of jack-up unit, spud leg height is also along with increase.When jack-up unit is built, spud leg can be divided into multiple segmentation, then closes up each spud leg segmentation in the height direction successively, and along with the rising of spud leg height, topmost the amplitude of oscillation is larger for spud leg, brings a very large difficult problem to the installation of spud leg segmentation.
At present, the mounting method of large truss type pile leg platform leg mainly contains four kinds:
One, shore tackle closes up method: the Chinese invention patent being 201010115089.8 as application number discloses a kind of truss framed leg folding method of jack-up drilling platform, and the key step of the method is as follows: close up after multiple spud leg sectionalized vertical in advance on land; Hull after lower water is fixed on harbour, on harbour, utilizes the very strong shore tackle of elevating capacity the spud leg segmentation after closing up in advance to be closed up.The advantage of this method carries out closing up work at harbour to affect less by sea situation, and the step of each spud leg folding can walk abreast and carries out.Shortcoming is that this spud leg mounting method needs to rely on the very strong shore tackle of elevating capacity, too large by resource restriction, and along with the rising of spud leg height, also increasing to the requirement of the lifting capacity of crane, such as current 400 feet of platform leg height 167 meters, need the shore tackle of about 170 meters to complete lifting, and the cost building crane cost is huge, the method is not easily general.
Two, waterbornely mounting method is dragged: the Chinese invention patent being 200710157586.2 as application number discloses a kind of large-scale trussed-beam spud leg waterborne transmitting and mounting method, and the overview of its mounting method is as follows: predetermined maritime area pitching pile; Installation drags mechanism; Crane slings spud leg segmentation to dragging mechanism, makes platform be raised to specified altitude assignment by lifting gear; Realize closing up with dragging mechanism; Decline platform carries out next cycle and closes up.This mounting method advantage that drags waterborne is: hang the installation that can complete spud leg segmentation without the need to large-scale sea.Shortcoming needs main hull (that is, platform) to be elevated, and in hull lifting process, platform cannot be constructed, personnel are inconvenient up and down, rise on stake rear platform and should not have too much personnel, and lifting platform number of times is very limited, shortens platform application life.
Three, to stand stake folding method: the roughly step of this method is: first debugged by spud leg jacking system after water under main hull; Select the sea bed closed up; Platform carries out station stake on this sea bed; Utilize sea to hang segmentation is winched to spud leg folding mouth place and carry out spud leg installation.
Four, deep-sea folding method: the roughly step of this method is: set up basic unit's spud leg segmentation, platform is sailed into region, deep-sea, use barge transport spud leg to be fragmented into and close up region, guide rail or sea is used to hang spud leg segment folding in basic unit's spud leg segmentation, close up rear decline spud leg, carry out closing up of next cycle.Though platform is in floating state all the time when this method is closed up, this method is closed up owing to being in abysmal area, and therefore the condition restriction of wind-engaging surge, does not have shipyard to adopt substantially.
The second and the third method are the spud leg mounting meanss that current ocean engineering industry generally adopts, but all need main hull to carry out station stake.And carry out the stake of main hull station and must reach two conditions: 1, piling is very strict to the Geological Condition Requirement of sea bed, if when sea bed geology is in " hard-soft clay stratum " (being commonly called as egg shell bottom), very easily there is " piling puncture ", destroy pile leg structure, therefore, need to find suitable sea bed and carry out station stake; 2, stand stake time due to spud leg need decline, therefore spud leg jacking system must all have been debugged.According to working procedure, the debugging of spud leg jacking system and spud leg folding carry out according to series system, and this mode makes the whole construction period of platform to postpone about 2 months.
Under current each shipyard compresses the main trend of construction period all by every means, jacking system debugging cannot complete on time, sea bed is not suitable for the restriction that the factors such as station stake are installed spud leg to avoid to need a kind of method, reduces platform fabrication cycle.
Summary of the invention
Based on the deficiency of above-mentioned background technology, the invention provides a kind of mounting method of jack-up unit spud leg, to solve the closure time length of existing platform leg, inefficiency, to affect the problems such as serious by sea situation.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of mounting method of jack-up unit spud leg, comprises step:
The main hull location setting up basic unit's spud leg section is made to float in dry dock;
Keep basic unit spud leg section relative to the inactive state of main hull in the vertical direction, utilize sea hang successively by spud leg segmental hoisting to be installed to closing up Kou Chu, welding is positioned to spud leg segmentation, until the spud leg section on main hull reaches predetermined height; Wherein, the assigned address being positioned the outer marine site of dry dock is hung in sea.
Preferably, the main hull location step floated in dry dock having set up basic unit's spud leg section is made to be specially described in:
Make to set up water under the main hull of basic unit's spud leg section;
Main hull is moved to the precalculated position in dry dock, close the dock gate of dry dock, regulate water level in dry dock to specified altitude assignment, to locate main hull mooring.
Preferably, described specified altitude assignment is lower than the sea level altitude in the outer marine site of described dry dock.
Preferably, the draft of described main hull in described dry dock is a setting value.
Preferably, described utilization sea is hung and spud leg segmental hoisting is also comprised step before closing up mouth place: regulate sea to hang the relative position with spud leg to be installed segmentation place on main hull.
Preferably, the described sea that regulates is hung and on main hull, the step of the relative position of spud leg to be installed segmentation place is specially: main hull is rotated in dry dock and regulate spud leg to be installed segmentation place and sea hang between Distance geometry angle.
Preferably, after one section of spud leg segment folding to next section of spud leg segment folding, also step is comprised: adjustment main hull floading condition makes next section of spud leg segmentation installed position be level.
Preferably, described main hull floading condition adjustment realizes by regulating ballast water in main hull.
Preferably, described spud leg segmentation cross section is equilateral triangle, and described sea is hung and lifted spud leg segmentation from the extended line side in summit to the center of gravity direction of described equilateral triangle.
Preferably, described spud leg segmentation to be installed is by closing up in tool locating to basic unit's spud leg section of described main hull and positioning welding and closing up in basic unit's spud leg section.
Preferably, described in, the main hull setting up basic unit's spud leg section is located to float on before in dry dock, utilize straddle truck or shore tackle spud leg segmentation to be installed on main hull and form described basic unit spud leg section.
As shown from the above technical solution, advantage of the present invention and good effect are:
One, method of the present invention is when carrying out the installation of spud leg without the need to making spud leg oscilaltion, this ensure that spud leg does not need repeatedly to be elevated when closing up, protection jacking system.
Two, method of the present invention does not need to carry out when spud leg jacking system has been debugged, and the pre-debugging of jacking system can be carried out in spud leg installation process simultaneously, check work is carried out to jacking system especially gear-box parameter, and the parallel crawl lifting debugging interting jacking system especially gear-box in the whole cycle assemblage gap can installed at spud leg, shorten the production cycle, enhance productivity.
Three, in method of the present invention, main hull floats in dry dock, sea is hung, and is positioned at outside dry dock, both are all under floating state, utilize the instrument such as capstan winch, hawser, the position of main hull can be regulated like a cork thus the position regulating spud leg to hang relative to sea and angle, by the control of water level in dry dock also can regulate further main hull and sea hang between difference in height.
Four, do not need stake of standing in method of the present invention, avoid the impact by sea bed ground quality regulate, avoid spud leg to destroy by sea bed geology affects.
Accompanying drawing explanation
Fig. 1 is the flow chart of jack-up unit spud leg mounting method one embodiment of the present invention.
Fig. 2 is that the layout schematic diagram with jack-up unit is hung in jack-up unit spud leg mounting method of the present invention sea when implementing.
Fig. 3 is that the relative position schematic diagram with jack-up unit spud leg is hung in jack-up unit spud leg mounting method of the present invention sea when implementing.
Fig. 4 is the schematic top plan view of sea lifting spud leg segmentation in jack-up unit spud leg mounting method of the present invention.
Fig. 5 is the schematic diagram that the extended line side lifting spud leg segmentation from spud leg segmentation equilateral triangle center of gravity to zenith directions is hung in sea.
Fig. 6 is the schematic diagram that the extended line side lifting spud leg segmentation from spud leg segmentation equilateral triangle summit to center of gravity direction is hung in sea.
Label declaration: 1, jack-up unit; 11, main hull; 12, spud leg; 120, shoe; 121, basic unit's spud leg section; 122, spud leg segmentation; 2, sea is hung; 21, hull; 22, suspension rod; 3, dry dock; 31, dock gate.
Detailed description of the invention
The exemplary embodiment embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes on different embodiments, it neither departs from the scope of the present invention, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the present invention.
The invention provides a kind of mounting method of jack-up unit spud leg, wherein, as shown in Figure 2, the spud leg 12 that this jack-up unit 1 comprises main hull 11 and can be elevated relative to main hull 11, the same with jack-up unit structure common at present, this jack-up unit 1 has three spud legs 12, spud leg 12 is the arrangement in equilateral triangle on main hull 11.Namely method of the present invention solves the installation question of spud leg 12, consults Fig. 1, and the method mainly comprises step:
S10: make the main hull location setting up basic unit's spud leg section float in dry dock;
S20: keep basic unit spud leg section relative to the inactive state of main hull in the vertical direction, utilize sea hang successively by spud leg segmental hoisting to be installed to closing up Kou Chu, welding is positioned to spud leg segmentation, until the spud leg section on main hull reaches predetermined height; Wherein, the assigned address being positioned the outer marine site of dry dock is hung in sea." close up Kou Chu " and refer to the position needing to install spud leg segmentation, it is a dynamic position.For the building course of a spud leg, the building course of spud leg successively closes up spud leg segmentation along short transverse on the basis of basic unit's spud leg section, detailed process for close up the segmentation of first paragraph spud leg successively in basic unit's spud leg section, then in the segmentation of first paragraph spud leg, close up the segmentation of second segment spud leg, the 3rd section of spud leg segmentation is closed up again in the segmentation of second segment spud leg,, finally close up the spud leg segmentation of top layer; In this process, " close up Kou Chu " and then refer to basic unit's spud leg section upper surface, first paragraph spud leg segmentation upper surface, second segment spud leg segmentation upper surface successively ...In the building course of spud leg, do not have the relative displacement on vertical direction between spud leg and main hull, namely spud leg does not have the process of oscilaltion, not by the impact of spud leg jacking system.
Wherein, before step S10, spud leg segmentation as much as possible can be installed on main hull by all available resources such as straddle truck, shore tackle according to the elevating capacity of our factory by shipyard, thus on main hull, form basic unit's spud leg section.What existing large-sized gantry hung hangs high general at 80 meters ~ 90 meters, higher than the spud leg segmentation of this height, can adopt mode in above-mentioned steps S20, utilize sea to hang to install.It is a kind ofly float on crane ship sea with elevating capacity that sea is hung, and it installs loop wheel machine, and can carry out hoisting operation, point self-propulsion type and non-self-propulsion type are hung in sea, and the crane ship entirety of non-self-propulsion type needs to pull navigation by tugboat.Sea large-scale is at present hung only has several, need when shipyard need use to lease, the hiring cost hung due to sea is higher, after first utilizing straddle truck or shore tackle to complete there is the installation of basic unit's spud leg section of certain altitude, the installation of all the other more spud leg segmentations of high altitude only need have been hung by sea, extra large crane operation workload can be reduced as much as possible, save lease cost.
Consult Fig. 2 and Fig. 3, in method of the present invention, step S10 makes main hull 11 locate to float in dry dock 3 to facilitate the mooring of main hull 11 to locate.In addition, affect little in dry dock 3 by surge, water level fluctuation degree is relatively little, can be in state relatively stably, conveniently spud leg segmentation 122 be installed on main hull 11 when main hull 11 is positioned in dry dock 3.
The selection of dry dock 3 can decide according to its degree of depth and size, and its size should make main hull 11 can movement flexibly safely within it, and the degree of depth on distance sea level, dry dock 3 dock bottom is then more high better.Main hull 11 in the concrete steps of dry dock 3 inner position is:
S11: make the main hull 11 times water setting up basic unit's spud leg section 121;
S12: main hull 11 is moved to the precalculated position in dry dock 3, closes the dock gate 31 of dry dock 3, regulates water level in dry dock 3 to specified altitude assignment, to locate main hull 11 mooring.
More preferably, in step S12, described specified altitude assignment, lower than the sea level altitude in the outer marine site of dry dock 3, namely specifically refers to the water level reduced in dry dock 3 when regulating water level in dry dock 3.As shown in Figure 3, water level in dry dock 3 is lower than the water level outside depressed place, form a height difference H, the position of such main hull 11 reduces, 2 are hung for sea, the peak reached required for its lifting spud leg segmentation 122 also reduces this height difference H, which decreases the length requirement that 2 suspension rods 22 are hung in sea, can reduce the lease expenses that sea hangs 2.
In addition, in step s 12, the draft of main hull 11 in dry dock 3 can be adjusted to a setting value as required, and this setting value is large as far as possible under the prerequisite ensureing jack-up unit 1 safety.Wherein, ensure that the prerequisite of jack-up unit 1 safety is: make the minimum point of jack-up unit 1 (i.e. shoe 120 minimum point of spud leg 12) be greater than minimum safe distance with the distance D1 of dry dock 3 dock bottom, to prevent shoe 120 and dry dock 3 bottom impacts.Jack-up unit 1 height of C.G. can not only be regulated by the draft increasing main hull 11, improve platform stabilization, reduce amplitude of fluctuation, and spud leg 12 hangs 2 height relative to sea can also be reduced to a certain extent, also can reduce the length requirement that 2 suspension rods 22 are hung in sea.
Still consult Fig. 2 and Fig. 3, when step S20 hangs 2 operation in sea, be positioned at the assigned address in the outer marine site of dry dock 3, and mooring location; Sea is hung distance D2 between the hull 21 of 2 and the dock gate 31 of dry dock 3 (distance between comprising bottom horizontal range between hull 21 afterbody shown in Fig. 2 and dock gate 31 and the hull 21 afterbody bottom shown in Fig. 3 and dock gate 31) and is not less than safe distance, and suspension rod 22 job area that sea hangs 2 need meet the requirement that spud leg segmentation 122 can be winched on main hull 11 above basic unit's spud leg section 121.
Spud leg segmentation 122 is arranged hanger (not shown), sea hang 2 need sling spud leg segmentation 122 time to be sling hanger by suspender belt or wire rope, when spud leg segmentation 122 is closed up after to main hull 11, take the shackle of suspender belt or wire rope again from the hanger of spud leg segmentation 122, sea is hung 2 and is prepared to sling next section of spud leg segmentation 122 again.The suspension hook that sea hangs 2 to be connected on suspension rod 22 and can oscilaltion, suspender belt or wire rope are connected on suspension hook, according to lifting regulation, the angle of suspender belt/wire rope and horizontal plane generally can not be less than 60 degree, hang in sea after 2 suspension hook peaks determine, by reducing spud leg segmentation 122 hanger height, sea can be made to hang 2 and to meet lifting requirements.Under the prerequisite meeting spud leg segmental hoisting balance, the ability that in the spud leg segmentation 122 of the spud leg the superiors, the position of hanger in this spud leg segmentation 122 can hang 2 according to sea moves down certain distance, improves Lifting Capacity and safety that sea hangs 2.
In one embodiment, step S20 utilizes sea to hang 2 spud leg segmentation 122 to be installed to be closed up to the concrete steps on main hull 11 and be:
S21: regulate sea to hang the relative position at spud leg segmentation 122 place to be installed on 2 and main hull 11.
S22: sea is hung 2 and spud leg segmentation 122 to be installed to be winched to above basic unit's spud leg section 121 of main hull 11.
S23: in the basic unit's spud leg section 121 by closing up frock spud leg segmentation 122 to be installed being positioned to main hull 11 and positioning welding and closing up in basic unit's spud leg section 121.In this step, conventional frock of closing up can be adopted to position welding, special positioning tool also can be adopted to position welding.Positioned by frock and overcome main hull 11 and sea and hang 2 and be all in the instability problem that floating state causes by surge affects, make the installation of spud leg segmentation 122 location more reliable.
Closing up of one section of spud leg segmentation 122 can be completed by step S21 to step S23, and before carrying out next section of spud leg segmentation 122 and closing up, more preferably also carry out following steps:
S24: adjustment main hull 11 floading condition makes next section of spud leg segmentation installed position be level, can be convenient to the location and installation of next section of spud leg segmentation 122 like this; In addition, owing to main hull 11 generally having three spud legs 12, and spud leg segmentation 122 once can only be installed in basic unit's spud leg section 121, jack-up unit 1 distribution of weight can be caused so uneven and tilt, can also prevent shoe 120 decline from encountering dry dock 3 dock bottom by adjustment main hull 11 floading condition and damage.Wherein, adjustment main hull 11 floading condition can adopt and regulates ballast water in main hull 11 and realize, and mode is simple, is easy to regulate.
Repeat step S21 to S23 again after adjusting main hull 11 floading condition and can complete closing up of next section of spud leg segmentation 122, so repeatedly until complete the installation of all spud leg segmentations 122.
For above-mentioned step S21, more preferably, regulate spud leg to be installed segmentation place and sea to hang Distance geometry angle between 2 by making main hull 11 rotate in dry dock 3, because main hull 11 floats on the water surface, the position of main hull 11 can be regulated like a cork, and in dry dock 3, be also convenient to the mooring location of main hull 11.It is 2 little as far as possible with the distance of spud leg to be installed segmentation place that main hull 11 and the sea relative position hung between 2 preferably makes sea hang, and it is large as far as possible that 2 boom topping angles are hung in sea, reaches to reduce sea and hang 2 lease expenses, make sea hang 2 suspension rod 22 length object short as far as possible.
Consult Fig. 4, the cross section of spud leg segmentation 122 is equilateral triangle, and more preferably, in step S22, sea is hung 2 and lifted spud leg segmentation 122 from the extended line side in summit A to the center of gravity G direction of equilateral triangle.Fig. 5 and Fig. 6 is consulted in contrast, what in Fig. 5 with Fig. 6, sea was hung hangs high identical, the length of suspension rod 22 is all identical with the elevation angle, suspension rod 22 top is all roughly positioned at directly over spud leg segmentation 122 equilateral triangle center of gravity G, Fig. 5 is that 2 schematic diagrames carrying out from the center of gravity G of equilateral triangle to the extended line side in A direction, summit lifting are hung in sea, and Fig. 6 is then that 2 schematic diagrames carrying out from the extended line side in summit A to the center of gravity G direction of equilateral triangle lifting are hung in sea.Obviously, two kinds of lifting modes are compared, and the difference of the horizontal range L0 that spud leg segmentation 122 and sea are hung between 2 suspension rods 22 is the difference of center of gravity G apart from summit A distance L2 and center of gravity G apart from length of side distance L1.Example is of a size of with common spud leg segmental structure, the length of side of equilateral triangle is 13 meters, leg-of-mutton height is about 11 meters, then center of gravity G is about 3.75 meters apart from the distance L1 of the length of side, center of gravity G is about 7.5 meters apart from the distance L2 of summit A, when spud leg segmentation 122 being lifted by mode shown in Fig. 6, horizontal range L0 between spud leg segmentation 122 and suspension rod 22 will increase about 3.75 meters (i.e. L2-L1) than the mode of Fig. 5, and what effectively reduce that spud leg segmentation 122 exists when height waves in the air hangs the risk of 2 structural collisions with sea.For ensureing that the extended line side that 2 approximately remain on summit A to center of gravity G direction is hung in sea, should consider that main hull 11 hangs the angles of 2, to make the spud leg segmentation 122 of lifting corresponding with the basic unit's spud leg section 121 on main hull 11 with sea when rotating main hull 11 in the step s 21.In certain embodiments, if to hang 2 abilities enough in sea, the mode of 2 lifting spud leg segmentations 122 is hung in sea can not by the restriction of mode shown in Fig. 6.
Method of the present invention can carry out following preparation process in advance before enforcement:
1, select suitable dry dock, determine the initial position that main hull is put in dry dock and angle;
2, the minimum safe distance bottom shoe minimum point and dry dock is determined;
3, the minimum safe distance that dry dock gate hangs with sea is determined;
Position when 4, determining extra large crane operation and band cable (mooring location) mode;
5, spud leg segmentation erection sequence and main hull rotation order is determined;
6, determine that inside and outside dry dock, the water surface is poor, main hull draft and the highest saves the position of hanger in spud leg segmentation;
7, main hull ballast water regulation scheme is determined;
8, the sea of reasonable altitudes is selected to hang.
Above-mentioned preparation process, after completing in advance, can complete the installation of spud leg fast according to predetermined scheme when implementing invention of the present invention.
Although describe the present invention with reference to several exemplary embodiment, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the present invention can specifically implement in a variety of forms, so be to be understood that, above-mentioned embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (11)
1. a mounting method for jack-up unit spud leg, is characterized in that, comprises step:
The main hull location setting up basic unit's spud leg section is made to float in dry dock;
Keep basic unit spud leg section relative to the inactive state of main hull in the vertical direction, utilize sea hang successively by spud leg segmental hoisting to be installed to closing up Kou Chu, welding is positioned to spud leg segmentation, until the spud leg section on main hull reaches predetermined height; Wherein, the assigned address being positioned the outer marine site of dry dock is hung in sea.
2. the mounting method of jack-up unit spud leg according to claim 1, is characterized in that, described in make to set up basic unit's spud leg section the main hull location step floated in dry dock be specially:
Make to set up water under the main hull of basic unit's spud leg section;
Main hull is moved to the precalculated position in dry dock, close the dock gate of dry dock, regulate water level in dry dock to specified altitude assignment, to locate main hull mooring.
3. the mounting method of jack-up unit spud leg according to claim 2, is characterized in that, described specified altitude assignment is lower than the sea level altitude in the outer marine site of described dry dock.
4. the mounting method of jack-up unit spud leg according to claim 2, is characterized in that, the draft of described main hull in described dry dock is a setting value.
5. the mounting method of jack-up unit spud leg according to claim 1, is characterized in that, described utilization sea is hung and spud leg segmental hoisting is also comprised step before closing up mouth place: regulate sea to hang the relative position with spud leg to be installed segmentation place on main hull.
6. the mounting method of jack-up unit spud leg according to claim 5, it is characterized in that, the described sea that regulates is hung and on main hull, the step of the relative position of spud leg to be installed segmentation place is specially: main hull is rotated in dry dock and regulate spud leg to be installed segmentation place and sea hang between Distance geometry angle.
7. the mounting method of jack-up unit spud leg according to claim 1, it is characterized in that, after one section of spud leg segment folding to next section of spud leg segment folding, also comprise step: adjustment main hull floading condition makes next section of spud leg segmentation installed position be level.
8. the mounting method of jack-up unit spud leg according to claim 7, is characterized in that, described main hull floading condition adjustment realizes by regulating ballast water in main hull.
9. the mounting method of the jack-up unit spud leg according to any one of claim 1-8, it is characterized in that, described spud leg segmentation cross section is equilateral triangle, and described sea is hung and lifted spud leg segmentation from the extended line side in summit to the center of gravity direction of described equilateral triangle.
10. the mounting method of the jack-up unit spud leg according to any one of claim 1-8, it is characterized in that, described spud leg segmentation to be installed is by closing up in tool locating to basic unit's spud leg section of described main hull and positioning welding and closing up in basic unit's spud leg section.
The mounting method of 11. jack-up unit spud legs according to any one of claim 1-8, it is characterized in that, the described main hull location setting up basic unit's spud leg section that makes floats on before in dry dock, utilizes straddle truck or shore tackle spud leg segmentation to be installed on main hull and forms described basic unit spud leg section.
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| CN105586864A (en) * | 2015-11-30 | 2016-05-18 | 中国国际海运集装箱(集团)股份有限公司 | Method for folding self-lifting-type platform truss-type pile legs |
| CN105887789A (en) * | 2016-06-20 | 2016-08-24 | 上海振华重工集团（南通）有限公司 | Pile leg pile pitching technology of heavy lifting mechanism |
| CN107399412A (en) * | 2016-05-19 | 2017-11-28 | 烟台中集来福士海洋工程有限公司 | MOPU method of construction |
| CN111188324A (en) * | 2019-12-26 | 2020-05-22 | 南通润邦海洋工程装备有限公司 | Overwater folding process for offshore wind power installation platform lifting system |
| CN114132830A (en) * | 2021-12-13 | 2022-03-04 | 上海振华重工启东海洋工程股份有限公司 | Pile leg section displacement lifting construction method |
| CN114182710A (en) * | 2021-12-17 | 2022-03-15 | 山海关船舶重工有限责任公司 | Installation method of pile shoe of wind power installation platform |
| CN114808897A (en) * | 2022-04-08 | 2022-07-29 | 山海关船舶重工有限责任公司 | Method for installing pile leg of wind power installation platform by using gantry crane bearing crane |
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| CN105586864A (en) * | 2015-11-30 | 2016-05-18 | 中国国际海运集装箱(集团)股份有限公司 | Method for folding self-lifting-type platform truss-type pile legs |
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| CN107399412B (en) * | 2016-05-19 | 2019-11-01 | 烟台中集来福士海洋工程有限公司 | The method of construction of MOPU |
| CN105887789A (en) * | 2016-06-20 | 2016-08-24 | 上海振华重工集团（南通）有限公司 | Pile leg pile pitching technology of heavy lifting mechanism |
| CN105887789B (en) * | 2016-06-20 | 2018-02-02 | 南通振华重型装备制造有限公司 | A kind of spud leg pitching pile technique of heavy lifting mechanism |
| CN111188324A (en) * | 2019-12-26 | 2020-05-22 | 南通润邦海洋工程装备有限公司 | Overwater folding process for offshore wind power installation platform lifting system |
| CN114132830A (en) * | 2021-12-13 | 2022-03-04 | 上海振华重工启东海洋工程股份有限公司 | Pile leg section displacement lifting construction method |
| CN114132830B (en) * | 2021-12-13 | 2023-08-29 | 上海振华重工启东海洋工程股份有限公司 | Pile leg section deflection lifting construction method |
| CN114182710A (en) * | 2021-12-17 | 2022-03-15 | 山海关船舶重工有限责任公司 | Installation method of pile shoe of wind power installation platform |
| CN114808897A (en) * | 2022-04-08 | 2022-07-29 | 山海关船舶重工有限责任公司 | Method for installing pile leg of wind power installation platform by using gantry crane bearing crane |
| CN114808897B (en) * | 2022-04-08 | 2024-05-31 | 山海关船舶重工有限责任公司 | Method for installing pile legs of wind power installation platform by gantry crane bearing crane |
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