CN107313415B - The folding method of jack-up unit spud leg - Google Patents
The folding method of jack-up unit spud leg Download PDFInfo
- Publication number
- CN107313415B CN107313415B CN201610265792.4A CN201610265792A CN107313415B CN 107313415 B CN107313415 B CN 107313415B CN 201610265792 A CN201610265792 A CN 201610265792A CN 107313415 B CN107313415 B CN 107313415B
- Authority
- CN
- China
- Prior art keywords
- spud leg
- segmentation
- crawler crane
- section
- lifting
- 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.)
- Active
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
Abstract
The present invention provides a kind of folding method of jack-up unit spud leg, include the following steps: that more piece spud leg, which is arranged, to be segmented, the segmentation of a wherein at least spud leg constitutes base's spud leg section and is mounted on the main hull of platform, and the segmentation of other spud legs constitutes top spud leg section；Determine the lifting parameter for constituting every section spud leg segmentation of the top spud leg section, wherein the lifting parameter includes lifting weight, sling height and minimum lifting radius；According to the lifting parameter for the every section spud leg segmentation for constituting the top spud leg section, it is determined to lift by crane and close up the crawler crane of the minimum tonnage of every section spud leg segmentation of the top spud leg section；Closing up for top spud leg section is realized by the crawler crane that at least two different tonnages are chosen in combination；Wherein, closing up for jack-up unit spud leg carries out in land.Spud leg folding method of the invention greatly reduces the construction period of entire platform, and in land formation, loop wheel machine is easy to use, and the operation of each profession can also intersect progress.
Description
Technical field
The present invention relates to offshore engineering field more particularly to the spud leg folding methods of jack-up unit.
Background technique
Jack-up unit by ocean current due to not influenced, and at sea there is no the floating knots such as rolling, pitching, heaving when operation
The Hydrodynamic of structure, it is very close with land operation, meanwhile, spud leg station is in seabed, the problem of mooring is also not present, big shallow
Sea is sanidal very widely used.With the consideration of the comprehensive performance of weight and intensity, the jack-up unit more than 250 Foot is all made of
Truss framed leg.Wherein, the spud leg length of 300 Foot jack-up units is at 122 meters or so, the stake of 400 Foot self-elevating drilling platforms
167 meters of leg length or so, the spud leg length of 500 Foot jack-up units is at 205 meters or so.And at present shipyard land gantry crane or
The sling height of shore tackle is generally at 70 meters or so.Therefore, traditional truss framed leg close up some carried out after being lauched
Close up.
Currently, the mainstream of the jack-up unit with truss framed leg, which builds folding method, mainly following three kinds:
First method is to rent crane barge, currently, the crane barge of big elevating height is fewer, and maximum elevating capacity
The spud leg weight (300 tons or so) of (3000 tons or more) all much than needing to close up is much bigger, therefore, the daily rental fee of this crane barge
It is all very high, and mobilize since loop wheel machine producer with regard to carrying out timing.For example, certain shipyard closes up the jack-up unit of 400 Foot, wherein
Time using crane barge is 12 days, and daily rental fee is 1,000,000 yuan, in addition dynamic return time, about 15,000,000 yuan of the expense of crane barge rent.
The disadvantage of obvious this mode is somewhat expensive, and influenced by weather it is bigger, can not operation when stormy waves is big.
Second method is the lifting device carried using jack-up unit, and the segmentation that needs are closed up is placed on the master of platform
On hull, main hull is risen along the spud leg section closed up, and rise to spud leg section upper end and close up a mouthful position, it is small by movement
The spud leg closed up in advance segmentation is moved to this by vehicle or other power devices closes up a mouthful position and closes up.Its shortcoming is that first, should
Method needs debug the lifting device and locking device of platform, and in most cases, this period debugging efforts also
It does not start to；Second, needing the fixation device using spud leg, cost is added additional；Third, this mode has used lifting system
It unites limited fatigue life, its service life can be made to reduce by 30% or more.
The third method is that the scheme of wharf crane is transformed.The disadvantage is that improvement expenses are very high, an improvement expenses are 2000
More ten thousand yuan.If newly-built special type gantry crane or full circle swinging kingpost are hung, cost can be higher.
It is that a part is at sea closed up that above-mentioned three kinds, which are closed up scheme all, and a part is closed up on land.Higher cost and by day
Gas, sea situation influence big.Since the jack-up unit overwhelming majority is that boat system also can only be under even if having from boat system certainly
It is installed after water.Need to rent the work that tugboat rotates platform and moves, costly, period when at sea closing up
It is long.Meanwhile being influenced by ocean current and passing ships very big when at sea moving, easily collide.
Summary of the invention
In order to solve the above-mentioned technical problem, the invention reside in a kind of spud leg folding method of jack-up unit is provided, with solution
It certainly needs on land and underwater to carry out spud leg folding respectively and bring higher cost and under water close up by weather in the prior art
The problems such as influence.
In view of the above technical problems, the present invention proposes a kind of folding method of jack-up unit spud leg, includes the following steps:
More piece spud leg is arranged to be segmented, the segmentation of a wherein at least spud leg constitutes base's spud leg section and is mounted on the main hull of platform, other stakes
Leg segmentation constitutes top spud leg section；Determine the lifting parameter for constituting every section spud leg segmentation of the top spud leg section, wherein this
Hanging parameter includes lifting weight, sling height and minimum lifting radius；According to the every section spud leg point for constituting the top spud leg section
The lifting parameter of section is determined to lift by crane and close up the crawler belt of the minimum tonnage of every section spud leg segmentation of the top spud leg section
It hangs；Closing up for top spud leg section is realized by the crawler crane that at least two different tonnages are chosen in combination；Wherein, the jack up is flat
Closing up for platform spud leg is carried out in land.
In a preferred approach, in the step of crawler crane of the determination minimum tonnage, further includes: determine each crawler crane
Elevating capacity parameter under different operating conditions is segmented according to every section spud leg of the elevating capacity parameter and the top spud leg section
Parameter comparison is lifted by crane, determines the spud leg segmentation that crawler crane can lift by crane under each operating condition；Wherein, all crawler cranes are under different operating conditions
The intersection for the spud leg segmentation that can be lifted by crane can cover every section spud leg segmentation of all top spud leg sections.
In a preferred approach, the crawler crane for choosing at least two different tonnages by combination realizes top spud leg section
In the step of closing up, further includes: determine the crawler crane tonnage used needed for each spud leg segmentation and operating condition, and use corresponding crawler belt
It hangs that spud leg segmentation lift by crane and closes up, until completing closing up for all spud legs segmentations.
In a preferred approach, the operating condition of the crawler crane include: crawler crane principal arm length, the tower auxiliary arm lengths of crawler crane and
Crawler crane balance weight；The elevating capacity parameter of crawler crane includes that crawler crane hoisting weight, crawler crane sling height, crawler belt are sling
Hang radius.
In a preferred approach, the crawler crane sling height is base's spud leg section height, has lifted and closed up spud leg point
Duan Gaodu and by lifting spud leg be segmented top to boom pulley top the sum of height.
In a preferred approach, the tower auxiliary arm that the crawler crane selects sling height big.
In a preferred approach, described by combination, the crawler crane for choosing at least two different tonnages realizes top spud leg
Section the step of closing up in, select the crawler crane of small tonnage at lower height spud leg segmentation close up, using large-tonnage
Crawler crane at high height spud leg segmentation close up.
In a preferred approach, the six sections spud leg height of lift is not all the same, and the smallest spud leg segmentation of height is located at institute
State the top position of top spud leg section.
In a preferred approach, the spud leg is truss framed leg.
In a preferred approach, what every section spud leg of the top spud leg section was segmented lifts by crane radius by the arrangement and crawler belt of platform
Hang manipulable position restriction.
As shown from the above technical solution, the present invention has at least the following advantages: the present invention uses full land spud leg folding side
Cost can be greatly reduced in formula.On the other hand, close up on land, electric power come from municipal power grid, voltage stabilization and cost compared with
It is low, and at sea, it needs using diesel generation, higher cost.Full land spud leg folding mode is protected from weather influences substantially, as long as
Wind-force is not that too greatly, such as 9 grades, with apparatus for lower wind, all will not influence and close up, and at sea close up, as long as wind-force is more than 5 grades, formation
Stormy waves will make crane barge can not operation.Meanwhile afloat duty cycle is reduced, so that platform is in harbour by marine growth corruption
The time of erosion shortens.The construction period that spud leg folding method of the invention greatly reduces entire platform is hung in land formation
Machine is easy to use, and the operation of each profession can also intersect progress.
Detailed description of the invention
Fig. 1 is the flow diagram of jack-up unit truss framed leg folding method of the present invention.
Fig. 2 is the structural schematic diagram of jack-up unit spud leg folding of the present invention.
Fig. 3 is the overlooking structure diagram of jack-up unit spud leg folding of the present invention.
Fig. 4 is the structural schematic diagram of the jack-up unit spud leg folding of the present embodiment.
The reference numerals are as follows: 1, lifting lug；2, rigging；3, spud leg is segmented；4, wirerope；5, suspension hook；6, tower auxiliary arm；
7, principal arm；8, counterweight；9, main hull.
Specific embodiment
The exemplary embodiment for embodying feature of present invention and advantage will describe in detail in the following description.It should be understood that
The present invention can have various variations in different embodiments, neither depart from the scope of the present invention, and theory therein
Bright and diagram inherently is illustrated as being used, rather than to limit the present invention.
Refering to fig. 1 to Fig. 4, the present invention provides a kind of folding method of jack-up unit spud leg, and this method includes following step
It is rapid:
S10: setting more piece spud leg is segmented 3, and 3 composition base's spud leg section of wherein at least spud leg segmentation is simultaneously mounted on platform
On main hull 9, other spud legs segmentation 3 constitutes top spud leg section.
S20: the lifting parameter for constituting every section spud leg segmentation 3 of top spud leg section is determined, wherein the lifting parameter includes
Heavy amount, sling height and minimum lifting radius.
S30: it according to the lifting parameter for the every section spud leg segmentation 3 for constituting top spud leg section, is determined to lift by crane and close up
The crawler crane of the minimum tonnage of every section spud leg segmentation 3 of portion's spud leg section.
S40: closing up for top spud leg section is realized by the crawler crane that at least two different tonnages are chosen in combination.
Wherein, closing up for jack-up unit spud leg carries out in land, and avoiding to close up under water is influenced by weather, is protected
The normal operation of spud leg folding is demonstrate,proved.
More preferably, the crawler crane of minimum tonnage is determined in step s 30, further includes: determines each crawler crane in different operating conditions
Under elevating capacity parameter, according to the lifting parameter comparison that every section spud leg of the elevating capacity parameter and top spud leg section is segmented,
Determine the spud leg segmentation that crawler crane can lift by crane under each operating condition；Wherein, the stake that all crawler cranes can lift by crane under different operating conditions
The intersection of leg segmentation can cover every section spud leg segmentation of all top spud leg sections.Wherein, the operating condition of crawler crane includes: crawler crane
Tower auxiliary 6 length of arm of 7 length of principal arm, crawler crane and 8 weight of crawler crane counterweight；The elevating capacity parameter of crawler crane includes crawler crane
Hoisting weight, crawler crane sling height, crawler crane lift by crane radius.
Further, it is determined that the crawler crane tonnage and operating condition that are used needed for each spud leg segmentation, and use corresponding crawler crane
It carries out lifting to spud leg segmentation in land to close up, until completing closing up for all spud leg segmentations.
In general, crawler crane is once produced, elevating capacity just it has been determined that according to its principal arm, tower auxiliary arm,
The various combination of counterweight is lifting weight, sling height and the lifting radius that can determine under different operating conditions, that is to say, that can be true
Determine its elevating capacity curve or elevating capacity table.
In the present invention, the length of the segmentation of spud leg can according to rack steel plate length and Preliminary division, and can be comprehensive
It is adjusted after closing the elevating capacity for considering crawler crane.Spud leg be segmented 3 length Lb once it is determined that, weight Mb is also determined that.
Further, according to the arrangement of self-elevating drilling platform, crawler crane can be also conditional with the position of operation, then spud leg divides
Minimum lifting radius R required for 3 lifting of section is also assured that.
In addition to above-mentioned condition, suspender belt or wirerope 4 and the lifting lug 1 of spud leg are at an angle when due to lifting, and angle
Degree range has certain limitation, so wanting certain length Lh from the position of lifting lug 1 to suspension hook 5.And lifting lug 1 is segmented 3 in spud leg
Position be also determining, so a certain distance Lt must be had to suspension hook 5 by being segmented 3 tops from spud leg.Simultaneously, it is contemplated that lifting
Safety, the frontier distance boom of spud leg will keep certain safe distance, this is allowed for from suspension hook 5 to tower auxiliary arm top
Pulley will must also have certain safe distance Lp.In summary length, so that it may determine from spud leg and be segmented 3 tops to boom
The safe distance Ls on pulley top.
In summary each factor, so that it may lifting weight ability, lifting height needed for determining one section spud leg of lifting segmentation 3
The duty parameters such as principal arm 7, auxiliary arm, counterweight 8 with lifting radius and when meeting these elevating capacity parameters, for convenient for checking,
Elevating capacity parameter and duty parameter can be combined and formulate table, according to the table according to the principle of minimum replacement boom to each
The operating condition that the crawler crane and the crawler crane of the 3 suitable tonnage of selection of spud leg segmentation should be located, then implements closing up for spud leg segmentation 3.
The method according to the invention, each spud leg segmentation 3 are closed up in land, and using the crawler crane of a variety of tonnages
And different operating conditions are applied in combination, and sufficiently save the cost of spud leg folding.
The specific implementation of the above method can carry out as follows:
Firstly, determining the lifting weight and sling height of spud leg segmentation 3:, can be with according to the length of the rack steel plate of buying
Substantially determine a rooted tooth batten segmentation length Lr, spud leg be segmented 3 length by two to three rooted tooth batten segmentation groups at.Certainly, it is
Make more efficient, when sling height is low, the bigger spud leg segmentation 3 of use, that is, three toothed racks pick up the length come i.e.
Length for section spud leg segmentation 3 is 3Lr, is denoted as Lb.The weight of one section spud leg segmentation 3 is denoted as Mb.In addition, with land gantry crane
Height, is denoted as Lg on the basis of the height that can be brought together into.Other than spud leg is segmented 3 own wts, on suspension hook 5 itself, pulley
Wirerope 4, hoisting rig 2, scaffold for hanging down etc. are denoted as Mf there are one fixed weight.
Secondly, the lifting radius parameter of every section spud leg segmentation 3 of top spud leg section can be with by the arrangement and crawler crane of platform
The position restriction of operation.That is, can determine the scope of activities of crawler crane according to the arrangement of jack-up unit, also just really
The smallest lifting radius is determined.
It is the lifting parameter that can determine each spud leg segmentation 3 according to above-mentioned parameter, for each spud leg can be formulated convenient for intuitively checking
The lifting parameter information table of segmentation, as shown in table 1-1.
Table 1-1
More preferably, the spud leg segmentation 3 at lower height can have biggish height, and be located at the spud leg point at top
Section 3 has lesser height, to improve the safety of lifting.It is located at the segmentation of two section spud legs D01, the E01's at top in table as above
Height Lb* can be set to the height Lb for being less than the segmentation of other spud legs.Correspondingly, the weight Mb* of spud leg segmentation D01, E01 also can
Less than the weight Mb of other spud legs segmentation.
For the elevating capacity parameter of crawler crane, it equally can also formulate related table and intuitively illustrate, i.e., crawler belt is sling
Beijing South Maxpower Technology Co. Ltd's force information table, the crawler crane elevating capacity information table include: crawler crane hoisting weight Mc, crawler crane sling height H, crawler belt
Slinging the tower auxiliary 6 length La of arm of radius R, 7 length Lm of crawler crane principal arm, crawler crane, crawler crane balance weight M and crawler crane can
The spud leg segmentation 3 closed up.Wherein, crawler crane sling height H be base's spud leg section height, lifted spud leg segmentation 3 height and by
Lifting spud leg is segmented 3 tops to the sum of the height on boom pulley top.The crawler crane elevating capacity information table is to meet table 1-1
It is formulated in the case where it is required that, as shown in table 1-2.
Table 1-2 crawler crane elevating capacity information table
More preferably, the tower auxiliary arm 6 that crawler crane selects sling height big in step s 30 avoids subsequent lifting higher
It carries out the lengthening of tower auxiliary arm when spud leg segmentation 3 and spends more activity durations, effectively improve working efficiency.
In this folding method, the length of spud leg segmentation 3 is not exactly the same, in order to improve efficiency, when sling height is low,
Using longer spud leg segmentation 3, when sling height is high, the shorter spud leg segmentation 3 of use.
Finally, minimum at cost, period shortest principle chooses at least two by combination according to table 1-1 and table 1-2
The crawler crane of different tonnages realizes closing up for top spud leg section.
In the present invention, when the higher position lifting of progress is closed up, pass through the lengthening of tower auxiliary arm 6, the stake lighter to weight
Leg segmentation carries out lifting and closes up.In actual operation since the lengthening time-consuming for carrying out tower auxiliary arm 6 is long, in order to make crawler belt
The utilization efficiency hung is higher, and centre can also intert remaining lifting operation.
According to the rent situation of crawler crane currently on the market, lifting tonnage and rent are not proportional relationship, rent
It is about directly proportional to the cube of lifting tonnage.It is hung as loop wheel machine and elevating capacity that elevating capacity is 2000 tons are 1250 tons
Machine, the former rent are more than 4 times of the latter.So to consider in cost group can be carried out using the crawler crane of two kinds of different tonnages
It closes and uses, with save the cost.
The present invention is described in further detail with a practical application embodiment with reference to the accompanying drawing.
Referring to Fig. 4, the folding method of the jack-up unit spud leg of the present embodiment is with 400 Foot jack up of JU2000E type
It is illustrated for the spud leg folding of drilling platforms, the spud leg in the present embodiment is truss framed leg；Spud leg segmentation 3 is by being in triangle
Three main chord tubes of shape arrangement and the multiple stay tubes being connected between main chord tube are constituted, and main chord tube is by two semifocal chord pipes and is set to two
Rack-plate composition between semifocal chord pipe, rack-plate are connected and composed by one to three rack-plate segmentation.
Specific implementation method and operating procedure include:
It is made of step 1: each spud leg is divided into the segmentation of seven section spud legs, seven sections spud leg segmentation is distinguished from low to high
Number is L401, L501, L601, L701, L801, L901-1 and L901-2.Spud leg is segmented L401 and constitutes base's spud leg section, can adopt
It is lifted by crane and is mounted on the main hull 9 of platform with 250 tons of gantry cranes.Spud leg be segmented L501, L601, L701, L801, L901-1 and
L901-2 will successively close up in the next steps on spud leg segmentation L401, and six sections spud leg segmentation constitutes top spud leg section.
Step 2: determining that the spud leg for constituting top spud leg section is segmented L501, L601, L701, L801, L901-1 and L901-2
Lifting parameter, which includes lifting weight, sling height and minimum lifting radius, and formulates rising for each spud leg segmentation
Hang parameter information table.
Specifically, sling height parameter is determined by following information: because buying rack steel plate length be 9.0 meters, one
The segmentation of two rooted tooth battens can be cut by opening rack steel plate, consider that the segmentation of two rooted tooth battens will differ a tooth pitch, the tooth after cutting
8.5 meters of batten sector boss or so.It is more efficient in order to make, when sling height is low, the bigger spud leg segmentation of use, that is, three
The segmentation of rooted tooth batten picks up the spud leg segmentation constituted with two semifocal chord pipes.According to the total height of platform, each spud leg segmentation is adjusted
Length, spud leg be segmented L501, L601 and L801 using three rooted tooth battens segmentation connection, length be 25.6 meters, weigh about 190 tons；
Spud leg is segmented L701 using the segmentation connection of two rooted tooth battens, and 17.7 meters of length weighs 127 tons；Spud leg segmentation L901-1 and L901-2 is adopted
It is segmented with two rooted tooth battens and connects and suitably cut, 17.7 meters of overall length, 127 tons of gross weight, wherein the spud leg of top is segmented
L901-2, weighs 95 tons by a length of 12.8 meters.With the sling height of 250 gantry crane of land for 60 meters, still, it is contemplated that segmentation divides,
It is highly 48.2 meters on the basis of the height that can be actually brought together into.
The lifting weight parameter of spud leg segmentation hangs down on suspension hook 5 itself, pulley other than spud leg is segmented own wt
Wirerope 4, hoisting rig 2, scaffold etc. there are one fixed weight, about 32 tons.Actual spud leg segmentation is apart from tower
The safe distance of auxiliary arm 6 is at 15 meters or so.
According to the arrangement of JU2000E self-elevating drilling platform, it can determine that the smallest lifting radius of crawler crane is 28 meters.
According to the above parameter, the lifting parameter information table of each spud leg segmentation is formulated.As shown in table 2-1:
The lifting parameter information table of each spud leg segmentation of table 2-1
| Spud leg number-of-fragments | Lift by crane radius | Hoisting weight | Sling height |
| L501 | 28m | 222T | 88.7m |
| L601 | 28m | 222T | 124.3m |
| L701 | 28m | 159T | 131.4m |
| L801 | 28m | 222T | 157m |
| L901-1 | 28m | 127T | 169m |
| L901-2 | 28m | 127T | 182m |
Step 3: being determined to lifting according to the lifting parameter information table that each spud leg is segmented and closing up every section spud leg segmentation
The crawler crane of minimum tonnage, and formulate crawler crane elevating capacity information table (being shown in Table 2-2).In the crawler crane elevating capacity information table
In include: elevating capacity parameter of each crawler crane under different operating conditions, and according to the elevating capacity parameter and top spud leg section
The segmentation of every section spud leg lifting parameter comparison, determine that crawler crane can lift by crane under each operating condition spud leg is segmented.
Table 2-2 crawler crane elevating capacity information table
Step 4: realizing closing up for top spud leg section by the crawler crane that at least two different tonnages are chosen in combination.According to
Table 2-2 can select a variety of Hoisting Programs, such as can use following two kinds:
The first Hoisting Program is: using 1250T crawler crane, spud leg is segmented L501, L601 and L701 by the tower auxiliary arm of 48m
All lifting is completed；Spud leg segmentation L801, L901-1 and L901-2 lifting is completed using 2000T crawler crane 84m tower auxiliary arm.
Second of Hoisting Program is: using 1250T crawler crane, the tower auxiliary arm lifting spud leg segmentation L501 of 42m and spud leg point
Section L601 is segmented L701 with the tower auxiliary arm lifting spud leg of 54m.Wherein, auxiliary arm counterweight 80T and 180T tower to 54m can be achieved
Lifting selects counterweight 180T identical with previous operating condition counterweight in order not to change previous operating condition (lifting L601 segmentation) counterweight.It adopts
Spud leg segmentation L801, L901-1 and L901-2 lifting is completed with 2000T crawler crane 84m tower auxiliary arm.
In two schemes, the former saves time and expense, and the latter is safer reliable, can be according to the operator of shipyard
It is horizontally selected more suitably a kind of scheme.
According to the rent situation of crawler crane in the market, lifting tonnage and rent are not proportional relationship, and rent is almost
It is directly proportional to the cube of lifting tonnage.The rent of 2000T crawler crane currently on the market is more than four times of 1250T crawler crane.
So L701 segmentation can also use 2000T crawler crane, 102m principal arm and the tower auxiliary arm of 54m although the L501 of front, L601
It is lifted, but considers that the rent of loop wheel machine, the present invention carry out lifting L501, L601 and L701 using 1250T crawler crane.Using
2000T crawler crane carries out lifting L801, L901-1 and L901-2 segmentation.More preferably, in the case where meeting table 2-1, as far as possible
The tower auxiliary arm 6 for selecting sling height big.In view of the rent of 1250 tons of crawler cranes less than 2000 tons of crawler cranes 1/4, as far as possible
Using 1250 tons of crawler crane.
By the method for aforementioned present invention are carried out to 400 Foot self-elevating drilling platforms of JU2000E type closing up for spud leg, than
At sea close up reduction platform afloat the time 50 days, effectively improves working efficiency；Meanwhile it being rented compared with renting crane barge
Gold is just saved more than 10,000,000, and job costs are greatly reduced.
According to above-mentioned introduction, the folding method of jack-up unit spud leg of the present invention is closed up using full land, at least have with
Lower advantage:
1, full land spud leg folding mode, substantially reduces the construction period of entire platform.
2, lifting is carried out using a variety of crawler cranes to close up, reduce costs about 90% compared with using crane barge.
3, it is influenced by weather smaller, is not influenced by wave especially.
4, afloat duty cycle is reduced, so that platform is shortened in harbour by the time that marine growth corrodes.
Although describing the present invention with reference to the above exemplary embodiment, it is to be understood that, term used be explanation and
Term exemplary, and not restrictive.Due to the present invention can be embodied in a variety of forms without departing from invention spirit or
Essence, it should therefore be appreciated that above embodiment is not limited to any of the foregoing details, and should be defined by the appended claims
The whole change and modification widely explained, therefore fallen into claim or its equivalent scope in spirit and scope all should be with
Attached claim is covered.
Claims (10)
1. a kind of folding method of jack-up unit spud leg, which comprises the steps of:
More piece spud leg is arranged to be segmented, the number of spud leg segmentation from low to high be respectively L401, L501, L601, L701,
L801, L901-1, L901-2, wherein spud leg segmentation L401 constitutes base's spud leg section and is mounted on the main hull of platform, other stakes
Leg segmentation constitutes top spud leg section；
The length of each spud leg segmentation is adjusted according to the height of jack-up unit, wherein spud leg segmentation L501, L601 and L801 are used
The segmentation connection of three rooted tooth battens, spud leg are segmented L701 using the segmentation connection of two rooted tooth battens, and spud leg is segmented L901-1 and L901-2
It is segmented using two rooted tooth battens and connects and cut；
Determine the lifting parameter for constituting every section spud leg segmentation of the top spud leg section, wherein the lifting parameter has included heavy
Amount, sling height and minimum lifting radius；
According to the lifting parameter for the every section spud leg segmentation for constituting the top spud leg section, it is determined to lift by crane and close up the top
The crawler crane of the minimum tonnage of every section spud leg segmentation of spud leg section；
Closing up for top spud leg section is realized by the crawler crane that at least two different tonnages are chosen in combination；
Wherein, closing up for the jack-up unit spud leg carries out in land.
2. folding method as described in claim 1, which is characterized in that the step of the crawler crane of the determination minimum tonnage
In, further includes: elevating capacity parameter of each crawler crane under different operating conditions is determined, according to the elevating capacity parameter and the top
The lifting parameter comparison of every section spud leg segmentation of spud leg section determines the spud leg segmentation that crawler crane can lift by crane under each operating condition；Wherein,
The intersection for the spud leg segmentation that all crawler cranes can lift by crane under different operating conditions can cover every section stake of all top spud leg sections
Leg segmentation.
3. folding method as claimed in claim 2, which is characterized in that described to choose at least two different tonnages by combination
Crawler crane realize top spud leg section the step of closing up in, further includes: determine the crawler crane tonnage used needed for the segmentation of each spud leg
And operating condition, and lifting is carried out to spud leg segmentation using corresponding crawler crane and is closed up, until completing closing up for all spud leg segmentations.
4. folding method as claimed in claim 2, which is characterized in that the operating condition of the crawler crane includes: that crawler crane principal arm is long
Degree, the tower auxiliary arm lengths of crawler crane and crawler crane balance weight；The elevating capacity parameter of crawler crane include crawler crane hoisting weight,
Crawler crane sling height, crawler crane lift by crane radius.
5. folding method as claimed in claim 4, which is characterized in that the crawler crane sling height is base's spud leg section
Highly, it has lifted and has closed up spud leg height of lift and by the sum of the height on lifting spud leg segmentation top to boom pulley top.
6. folding method as claimed in claim 4, which is characterized in that the crawler crane selects big tower auxiliary of sling height
Arm.
7. folding method as described in claim 1, which is characterized in that described by combination, choose at least two different tons
The crawler crane of position realize top spud leg section the step of closing up in, select the crawler crane of small tonnage to the spud leg at lower height point
Duan Jinhang closes up, and is closed up using the crawler crane of large-tonnage to the spud leg segmentation at high height.
8. folding method as described in claim 1, which is characterized in that the top spud leg height of lift is not all the same, and high
Spend the top position that the smallest spud leg segmentation is located at the top spud leg section.
9. folding method as described in claim 1, which is characterized in that the spud leg is truss framed leg.
10. folding method as described in claim 1, which is characterized in that every section spud leg segmentation of the top spud leg section rises
Radius is hung by the manipulable position restriction of arrangement and crawler crane of platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265792.4A CN107313415B (en) | 2016-04-26 | 2016-04-26 | The folding method of jack-up unit spud leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610265792.4A CN107313415B (en) | 2016-04-26 | 2016-04-26 | The folding method of jack-up unit spud leg |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107313415A CN107313415A (en) | 2017-11-03 |
| CN107313415B true CN107313415B (en) | 2019-07-26 |
Family
ID=60185545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610265792.4A Active CN107313415B (en) | 2016-04-26 | 2016-04-26 | The folding method of jack-up unit spud leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313415B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168417A (en) * | 2010-02-25 | 2011-08-31 | 烟台来福士海洋工程有限公司 | Truss framed leg folding method of jack-up drilling platform |
| CN104878733A (en) * | 2015-04-21 | 2015-09-02 | 南通蓝岛海洋工程有限公司 | Drilling platform pile leg segmented closing technology |
| CN104889682A (en) * | 2015-05-25 | 2015-09-09 | 南通中远船务工程有限公司 | Pile leg segmented construction method |
| CN105152040A (en) * | 2015-09-08 | 2015-12-16 | 山东海湾吊装工程股份有限公司 | Process for sectionally closing and hoisting pile legs of self-elevating offshore oil platform through crawler crane |
-
2016
- 2016-04-26 CN CN201610265792.4A patent/CN107313415B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168417A (en) * | 2010-02-25 | 2011-08-31 | 烟台来福士海洋工程有限公司 | Truss framed leg folding method of jack-up drilling platform |
| CN104878733A (en) * | 2015-04-21 | 2015-09-02 | 南通蓝岛海洋工程有限公司 | Drilling platform pile leg segmented closing technology |
| CN104889682A (en) * | 2015-05-25 | 2015-09-09 | 南通中远船务工程有限公司 | Pile leg segmented construction method |
| CN105152040A (en) * | 2015-09-08 | 2015-12-16 | 山东海湾吊装工程股份有限公司 | Process for sectionally closing and hoisting pile legs of self-elevating offshore oil platform through crawler crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107313415A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207519426U (en) | A kind of cultivation work ship | |
| CN101837929B (en) | Operation method for lifting fan for barge in shoal area | |
| EP2251254A1 (en) | Installation vessel for offshore wind turbines | |
| CN102168417A (en) | Truss framed leg folding method of jack-up drilling platform | |
| CN106828812B (en) | Semi-submersible type deep-sea wind-powered electricity generation mounting platform and its wind power generating set integral installation method | |
| CN204979164U (en) | Floating wind turbine foundation and floating wind turbine generator system | |
| CN110466705B (en) | Semi-submersible offshore wind turbine self-stabilizing equipment | |
| CN109941397A (en) | A kind of semi-submersible type offshore wind generating platform and offshore wind energy plant | |
| CN101844606B (en) | Shallow sea wind power construction system, shallow sea wind power platform and shallow sea wind power construction method | |
| CN107653856B (en) | The construction folding method of jack-up unit | |
| CN109720512A (en) | It ocean platform and its steps on and multiplies gangway ladder | |
| CN107313415B (en) | The folding method of jack-up unit spud leg | |
| CN201914862U (en) | Self-rising fan mounting platform | |
| CN206141788U (en) | Utilize platform that solar energy and ocean current can generate electricity | |
| CN203095441U (en) | Combined floating crane for mud flats | |
| CN104554639A (en) | Installation equipment for large offshore wind power equipment | |
| CN102206938A (en) | Novel method for installing upper part block of offshore platform | |
| CN204642060U (en) | A kind of large-scale coastal waters wind power equipment installs equipment | |
| CN103195080A (en) | Towing method for gravity foundation | |
| CN201512098U (en) | Light self-elevating survey platform over rivers | |
| CN108018841A (en) | Mobile ocean pasture device | |
| CN108674597A (en) | A kind of jack up wind-powered electricity generation mounting platform | |
| CN202987472U (en) | Truss type offshore wind turbine mounting barge capable of sitting on bottom | |
| CN109050812A (en) | A kind of pier | |
| CN211815983U (en) | Water level adaptation adjusting foundation installation assembly for intelligent mooring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |