CN107796603A - A kind of platform cantilever beam load test method - Google Patents
A kind of platform cantilever beam load test method Download PDFInfo
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- CN107796603A CN107796603A CN201610801353.0A CN201610801353A CN107796603A CN 107796603 A CN107796603 A CN 107796603A CN 201610801353 A CN201610801353 A CN 201610801353A CN 107796603 A CN107796603 A CN 107796603A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention provides a kind of platform cantilever beam load test method, including the station stake of step jack-up unit, the cantilever beam on jack-up unit is stretched out to harbour, the weight of adjustable weight is set on the harbour；Rig floor is moved to the test station of cantilever beam；Weight is moved to the underface of test station, and is connected with rig floor；The weight of weight is adjusted and progressively loaded to rig floor, measures the deformation data of cantilever beam.In above-mentioned platform cantilever beam load test method, the cantilever beam on jack-up unit stretches out to harbour.Due to setting the weight of adjustable weight on harbour.Then cantilever beam directly can be connected by rig floor with the weight on harbour, to measure the deformation data of cantilever beam.Whole test method is operated on quay surface, and whole process is all carried out on the coast.Tugboat need not be rented and employ sailor, the whole test period greatly shortens, and saves integrated cost.
Description
Technical field
The present invention relates to jack-up unit field, more particularly to platform cantilever beam load test method.
Background technology
Jack-up unit is stably located on sea bed by spud leg and shoe, is not influenceed by ocean current, at sea during operation not
The Hydrodynamic of the floating structures such as rolling, pitching, heaving be present, it is very close with land operation.Meanwhile spud leg station is in sea
Bottom, also in the absence of mooring the problem of, in shallow sea, sanidal application is very extensive.It is big absolutely because jack-up unit does not have moon pool
Most drilling wells stretches out outboard using cantilever beam and carries out drillng operation.Cantilever beam belong to jack-up unit core component it
One.
Cantilever beam subjects the institute of own wt, rig floor and drillng operation due to being cantilevered out to outboard work from main hull
There is load.Therefore, all very high are required to the strength and stiffness of cantilever beam., be to cantilever beam after completion is closed up in construction
Intensity carries out load test to examine its strength and stiffness.
At present, the cantilever beam load test of jack-up unit be mostly using barge come examine the intensity of cantilever beam and just
Degree, barge float across the sea, and therefore, the cantilever beam load test of jack-up unit is all at sea to carry out.Sea trial needs
Rent tugboat and employ sailor and coordinate completion.Rent tugboat, employ sailor, price is high, increases cantilever beam load test
Cost.
The content of the invention
It is an object of the invention to provide it is a kind of can cost be relatively low, platform cantilever beam load test without using tugboat
Method
A kind of platform cantilever beam load test method, including step：
The stake of jack-up unit station, the cantilever beam on jack-up unit is stretched out to harbour, adjustable weight is set on the harbour
Weight；
Rig floor is moved to the test station of cantilever beam；
Weight is moved to the underface of test station, and is connected with rig floor；
The weight of weight is adjusted and progressively loaded to rig floor, measures the deformation data of cantilever beam.
In a wherein embodiment, in addition to, jack-up unit, which is increased to cantilever beam, can sling the test need of weight
Will height.
In a wherein embodiment, the harbour is provided with liftable flat car and horse leg support, and the horse leg support is horizontal
It is described that weight is moved to the underface of test station across the top of the flat car, and the step of be connected with rig floor, also wrap
Include：
Lifting weight is positioned in the horse leg support；
The flat car, which rises, holds up the horse leg support and weight；
The flat car is travelled to the underface of the test station；
The flat car declines, the horse leg support landing；
The hook of rig floor is connected by the hanger of rigging and weight.
In a wherein embodiment, the height adjustment range of the flat car is more than the horse leg support and the flat car
The distance between.
In a wherein embodiment, the weight is barge, and barge is filled or arranged by immersible pump and flexible pipe
Go out ballast water, to adjust the weight of barge.
In a wherein embodiment, in the flat car rises the step of holding up the horse leg support and weight, bag
Include：
Judge whether the weight of barge exceedes the maximum load of flat car；
If the weight of barge exceedes flat car load-carrying, draining is carried out to barge, until the weight of barge is less than flat car most
Heavy－duty；
Flat car is risen, and the horse leg support is held up.
In a wherein embodiment, in addition to step：
Before rig floor lifts weight, the cantilever beam to cantilevered out ultimate range, measure and record the deformation base of the cantilever beam
Plinth data.
In a wherein embodiment, the weight to weight is adjusted and progressively loaded to rig floor, measures cantilever
The step of deformation data of beam, including step：
The load capacity of rig floor is loaded, loaded weight reaches the setting percent value of maximum load；
Hook carries loaded weight, stops the scheduled time；
Measure and record the deformation data of cantilever beam.
In a wherein embodiment, the percent value of the setting is respectively 25%, 50%, 75% and 100%.
In a wherein embodiment, in addition to step：
Cantilever beam unloads loads；
Measure and record the secondary deformation basic data of the deformation basic data institute relevant position of cantilever beam；
Contrast the deformation basic data and described time deformation basic data, judge deformation that the structure of cantilever beam occurs whether
Within regime of elastic deformation.
At least have relative to traditional platform cantilever beam load test method in above-mentioned platform cantilever beam load test method
Have the advantage that：
First, in above-mentioned platform cantilever beam load test method, the stake of jack-up unit station, the cantilever beam on jack-up unit is made
Stretched out to harbour.Due to setting the weight of adjustable weight on harbour.Then cantilever beam can be directly by rig floor and harbour
Weight connects, to measure the deformation data of cantilever beam.Therefore, whole test method is operated on quay surface, entirely
Process is all carried out on the coast.Tugboat need not be rented and employ sailor, the whole test period greatly shortens, and saves synthesis
Cost.Meanwhile avoid the administrative examination and approval formality of operation on the sea.
Also, weight is carried by horse leg support, risen using liftable flat car by horse leg support and in horse leg support
Weight together carried.Flat car declines, and horse leg support is fallen and lands, and weight ballast is in horse leg support, in case load tries
Test use.Coordinated by flat car and horse leg support, realize the carrying and carrying of weight, easy to operate, efficiency is higher.
Although also, be equally loading weight from barge, it can avoid what operating personnel's operation at sea was brought
Problem.On the one hand, have barge by oneself due to this shipyard does not have railing, in the case where natural environment is severe, the work of stormy waves mostly
Under, on ship there is the risk to fall into the sea in operating personnel.When on the other hand, due to beat ballast water to barge, operating personnel need
Manhole cover is opened, so that immersible pump is to fetching water in barge.Come once operational error or stormy waves are stamped, barge has inclination very
To the danger toppled, the accident that causes casualties and property loss.Therefore, platform cantilever beam load test method of the invention,
The personnel of not needing carry out the adjustment works such as ballast water on the barge of floating, above-mentioned danger can be avoided completely, to the peace of personnel
Full property and comfortableness are greatly improved.
Brief description of the drawings
Fig. 1 is the structural representation of self-elevating drilling platform used in the present invention；
Fig. 2 is the structural representation of another angle of the self-elevating drilling platform according to Fig. 1；
Fig. 3 is the flow chart of the platform cantilever beam load test method of present embodiment；
Fig. 4 is the step S15 of the platform cantilever beam load test method shown in Fig. 3 particular flow sheet；
Fig. 5 is the schematic diagram of the barge in the platform cantilever beam load test method shown in Fig. 3；
Fig. 6 is the particular flow sheet of the step S15 shown in Fig. 4；
Fig. 7 is the step S17 of the platform cantilever beam load test method shown in Fig. 3 particular flow sheet.
Description of reference numerals is as follows：1st, self-elevating drilling platform；2nd, cantilever beam；3rd, rig floor；4th, harbour；5th, weight；6th, put down
Wooden handcart；7th, horse leg support.
Embodiment
Embodying the exemplary embodiment of 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 changes in different embodiments, and it is neither departed from the scope of the present invention, and theory therein
Bright and diagram is treated as purposes of discussion in itself, and is not used to the limitation present invention.
The present invention provides a kind of platform cantilever beam load test method and is applied to jack-up unit.It is specific herein, please
Refering to Fig. 1 and Fig. 2, illustrated by taking the load test of cantilever beam 2 of 300 Foot self-elevating drilling platforms 1 as an example, other are no longer superfluous
State.The cantilever beam 2 of this kind of jack-up unit 1 arranges that cantilever beam 2 can rearwardly slide onto the center of rig floor 3 using cephalocaudal direction
The Foot of afterbody 50 of anomaly platform distance, convert into 15.24 meters.The center of rig floor 3 can convert into 4.57 meters with 15 Foot of left and right each sliding.Its
In, 1 Foot=1 foot=30.48 centimetre.
Referring to Fig. 3, the platform cantilever beam load test method of present embodiment includes step：
Step S11, the station stake of jack-up unit 1, makes the cantilever beam 2 on jack-up unit 1 be stretched out to harbour 4, and being set on harbour 4 can
The weight 5 of regulating weight.
It is required that platform cantilever beam 2 slides out the side come close to harbour 4, the weight 5 on harbour 4 is sling so as to cantilever beam 2.
Usual cantilever beam 2 is located at the afterbody of jack-up unit 1, i.e., the afterbody of jack-up unit 1 is close to harbour 4.
Step S13, rig floor 3 are moved to the test station of cantilever beam 2.
Weight 5 is connected by rig floor 3 with cantilever beam 2.Cephalocaudal direction of the cantilever beam 2 along jack-up unit 1 stretches.Rig floor 3
On cantilever beam 2, moved along the left and right directions of cantilever beam 2.Specifically, the larboard distalmost end of test station including cantilever beam 2,
Starboard distalmost end and the centre position between the larboard distalmost end and starboard distalmost end.
Step S15, weight 5 is moved to the underface of test station, and be connected with rig floor 3.
Weight 5 is moved to the underface of test station, facilitates weight 5 to be connected with rig floor 3, so that the load of cantilever beam 2.
Step S17, the weight of weight 5 is adjusted and progressively loaded to rig floor 3, measure the deformation data of cantilever beam 2.
The different weight of weight 5 is set for different cantilever beams 2, and when rig floor 3 is located at the different tests of cantilever beam 2
During station, weight 5 varies in weight.Therefore the weight-adjustable section of weight 5, and progressively weight 5 is loaded, so that the institute of cantilever beam 2
Gradually increased by load, make the more accurate of load test.It is appreciated that weight 5 is barge or the weight of other adjustable weights
Block.When weight 5 is barge, filling ballast water is carried out to barge by immersible pump and flexible pipe, to adjust the weight of barge.
In the above-mentioned load test method of platform cantilever beam 2, the station stake of jack-up unit 1, make the cantilever on jack-up unit 1
Beam 2 stretches out to harbour 4.Due to setting the weight 5 of adjustable weight on harbour 4.Then cantilever beam 2 can directly by rig floor 3 with
Weight 5 on harbour 4 connects, to measure the deformation data of cantilever beam 2.Therefore, whole test method is enterprising on the ground of harbour 4
Row operation, whole process are all carried out on the coast.Tugboat need not be rented and employ sailor, the whole test period contracts significantly
It is short, save integrated cost.
Specifically in the present embodiment, after step s 11, in addition to step S111：Jack-up unit 1 raises, rise
To the height required for load test, to guarantee smoothly to sling the weight 5 on harbour 4.
Specifically, for the afterbody of platform close to harbour 4, platform rises to the distance for being higher by about 10 meters of harbour 4.
Before rig floor 3 lifts weight 5, in addition to step S112, cantilever beam 2 is cantilevered out to ultimate range, measures and records
The deformation basic data of cantilever beam 2.
Because the distance that cantilever beam 2 outwards slides is bigger, bearing capacity is poorer, so when doing load test, checking is slided
Remove this most dangerous operating mode of farthest distance, you can learn the load condition of cantilever beam 2.Measure and record cantilever beam 2
Deformation data.Need to measure and record multigroup deformation data in the same horizontal position of cantilever beam 2.
Specifically, cantilever beam 2 rearwardly slide onto rig floor 3 from the Foot of afterbody 50 of platform with a distance from.According to the load of cantilever beam 2
The requirement of test program records 6 point institutes on cantilever beam 2, it is necessary to measure and record cantilever beam 2 per each 6 groups of data in side respectively
Corresponding deformation data.
Step S13, rig floor 3 are moved to the test station of cantilever beam 2.
Specifically in the present embodiment, due to the larboard distalmost end of test station including cantilever beam 2, starboard distalmost end and
Centre position between larboard distalmost end and starboard distalmost end.Three test stations are mutually tested in turn, successively.Tool
In the present embodiment, first, battery of tests is the centre position being pointed between larboard distalmost end and starboard distalmost end to body
Carry out Road test.Then, second group of experiment is to carry out Road test to larboard distalmost end, and the 3rd group of experiment is starboard distalmost end
Test station carry out Road test.
For different test stations, its corresponding maximum load also differs.That is, maximum load includes the cantilever beam 2
The maximum load in centre position, the maximum load of the maximum load of larboard distalmost end and starboard distalmost end, centre position is most
Big load is all higher than the maximum load of larboard distalmost end and the maximum load of starboard distalmost end.In order to ensure weight during load test
5 weight is no more than the defined maximum load of load test, can in the multigroup hydraulic jack of arranged beneath of weight 5, with
Accurately weighed before load test.
Specifically, the maximum load of battery of tests is that the maximum load of 680 tons, second group experiments is 231 tons, the 3rd group
The maximum load of experiment is 327 tons.
Fig. 1 and Fig. 2 is referred to, specifically in the present embodiment, harbour 4 is provided with liftable flat car 6 and horse leg support
7, horse leg support 7 is across the top of flat car 6.Horse leg support 7 can carry weight 5.Referring to Fig. 4, then step S15, by weight 5
The underface of test station is moved to, and is connected with rig floor 3, is specifically also included：
Step S151, lifting weight 5 are positioned in horse leg support 7.
Step S152, flat car 6 are risen, and horse leg support 7 and weight 5 are held up.
The height of horse leg support 7 is more than the height of flat car 6, during the top to collapse when horse leg support 7 is horizontal with flat car 6, flat car 6
Height adjustment range is more than the distance between horse leg support 7 and flat car 6.The distance between horse leg support 7 and flat car 6 are horse leg support
7 loading end and the difference in height in the car face of flat car 6.Therefore, flat car 6 rises, and can hold up horse leg support 7；Under flat car 6
Drop, horse leg support 7 can land.
Referring to Fig. 5, specifically in the present embodiment, step S152, flat car 6 rises, by horse leg support 7 and the support of weight 5
Rise, specifically include step：
Step S1521, judges whether the weight of barge exceedes the maximum load of flat car 6.
Specifically in the present embodiment, the maximum load of flat car 6 is 320 tons.Barge is conducted oneself with dignity 138 tons, and maximum can be injected
Close to 900 tons of ballast waters.
Step S1522, if the weight of barge exceedes the load-carrying of flat car 6, draining is carried out to barge, until the weight of barge
Less than the maximum load of flat car 6.
Step S1523, flat car 6 are risen, and horse leg support 7 is held up.
By above-mentioned steps S1521, step S1522, it can prevent the weight of barge from exceeding the maximum load of flat car 6,
Flat car 6 is damaged, and ensures that flat car 6 can hold up weight 5, ensures that load test is smoothed out.
Step S153, flat car 6 are travelled to the underface of test station.
Step S154, flat car 6 decline, and horse leg support 7 is landed.
Step S155, the hook of rig floor 3 are connected by the hanger of rigging and weight.
Specifically in the present embodiment, in step S17, the weight of weight is adjusted and progressively loaded to rig floor 3, surveyed
In the step of measuring the deformation data of cantilever beam 2, ballast water is filled to barge using immersible pump and flexible pipe.Wherein barge is conducted oneself with dignity, is latent
Water pump and flexible pipe, Current Collector Sleave weight, tourist bus, top are driven nearly weighs 196 tons containing coaster, suspension ring elevator summation.Battery of tests needs
Hook maximum load be 680 tons, so need inject 484 tons of ballast waters.As shown in Figure 5, barge is averagely segmented 8 cabins
Room, each cabin can about make a call to 112 tons of ballast waters.In order to facilitate observation, using the 3rd ballast tank, the 4th ballast tank, the 5th pressure
Carry cabin and the 6th ballast tank all makes ballast water.Remaining 4 ballast tanks need to make a call to 36 tons of ballast waters altogether, by calculating, each
Ballast tank only needs to inject the ballast water of 0.24 meter of depth.There is special messenger's observed stage when last 4 cabins fill ballast water, with
It is anti-to exceed predetermined water level.Just in case exceeding predetermined water level, to discharge immediately.
Step S17, is specifically included：Step S171, loaded weight reach the setting percent value of maximum load.Maximum load
The percent value of setting is respectively 25%, 50%, 75% and 100%.
For every group of experiment, loaded weight is loaded according to the setting percentage of maximum load.That is, in every group of experiment,
Loaded weight is divided into 25%, 50%, 75% and 100% of maximum load corresponding to the station.
Step 172, rig floor 3 carries loaded weight, stops the scheduled time.
Specifically in the present embodiment, the scheduled time of stop is 5 minutes.
Step 173, measure and record the deformation data of cantilever beam 2.
Specifically, the maximum load of battery of tests is 680 tons, then the hook above cantilever beam 2 loads.When to
As defined in test program during load 25%, that is, 170 ton hours, stop 5 minutes, measure and record the deformation data of cantilever beam 2.
Continue the load of increase hook, when being loaded into the 50% of defined test load, that is, 340 ton hours, stop 5 points
Clock, measure and record the deformation data of cantilever beam 2.
Continue the load of increase hook, when being loaded into the 75% of defined test load, that is, 510 ton hours, stop 5 points
Clock, measure and record the deformation data of cantilever beam 2.
When being loaded into 680 ton hours, barge should be lifted, can appropriate discharge part ballast water if can not be lifted.
680 ton hours are loaded into, is stopped 5 minutes, is measured and record the deformation data of cantilever beam 2.
Specifically in the present embodiment, step S17 also includes：Step S174, cantilever beam 2 unload loads 5.Decentralization is adjustable
In the pouring weight of weight to horse leg support 7.Specifically, draining is carried out to barge by immersible pump and flexible pipe, can be with to reach flat car 6
The weight range born.
Step S175, measure and record the secondary deformation basic data of the deformation basic data institute relevant position of cantilever beam 2.It is secondary
Deforming basic data is：Cantilever beam 2 passes through battery of tests, in step S112, the position corresponding to measurement deformation basic data
Put and measure and record, as the secondary deformation basic data of battery of tests rear suspension beam 2.
Step S175, contrast deformation basic data and time deformation basic data, judge the deformation that the structure of cantilever beam 2 occurs
Whether within regime of elastic deformation.
According to cantilever beam 2 unload after whether can be returned to original position, judge cantilever beam 2 structure occur deformation whether
Within regime of elastic deformation.
So far, the load test of the cantilever beam 2 of the test station corresponding to battery of tests is completed.Connect down, still there is second
Group experiment and the 3rd group of experiment.Step S13 for operating procedure and the battery of tests of second group of experiment and the 3rd group of experiment,
Step S15, step 17 is close.
Difference is：Because second group of experiment is different from the 3rd group of maximum load corresponding to experiment, then rig floor 3 plus
Loading capacity is also different.The loaded weight of second group of experiment is respectively 25%, 50%, 75% and the 100% of 231 tons.3rd group of experiment
Loaded weight is respectively 25%, 50%, 75% and the 100% of 327 tons.
The load test method of platform cantilever beam 2 of present embodiment also includes step S19, weight 5 is moved to defined
Position, cantilever beam 2 are withdrawn, and complete load test.
Specifically, by flat car 6 by barging to specified location.
Although describing the present invention with reference to several exemplary embodiments, it is to be understood that, term used be explanation and
Exemplary and nonrestrictive term.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-mentioned embodiment is not limited to any foregoing details, and should be limited in appended claims
Widely explained in spirit and scope, thus the whole changes fallen into claim or its equivalent scope and remodeling all should be with
Attached claim is covered.
Claims (10)
1. a kind of platform cantilever beam load test method, including step：
The stake of jack-up unit station, the cantilever beam on jack-up unit is stretched out to harbour, adjustable weight is set on the harbour
Weight；
Rig floor is moved to the test station of cantilever beam；
Weight is moved to the underface of test station, and is connected with rig floor；
The weight of weight is adjusted and progressively loaded to rig floor, measures the deformation data of cantilever beam.
2. platform cantilever beam load test method according to claim 1, it is characterised in that also include, jack-up unit
Be increased to cantilever beam can sling weight test need height.
3. platform cantilever beam load test method according to claim 1, it is characterised in that the harbour, which is provided with, to be risen
The flat car and horse leg support of drop, the horse leg support is across the top of the flat car, described that weight is moved into test station
Underface, and the step of be connected with rig floor, in addition to：
Lifting weight is positioned in the horse leg support；
The flat car, which rises, holds up the horse leg support and weight；
The flat car is travelled to the underface of the test station；
The flat car declines, the horse leg support landing；
The hook of rig floor is connected by the hanger of rigging and weight.
4. platform cantilever beam load test method according to claim 3, it is characterised in that the height of the flat car is adjusted
Whole scope is more than the distance between the horse leg support and the flat car.
5. platform cantilever beam load test method according to claim 3, it is characterised in that the weight is barge, is led to
Cross immersible pump and flexible pipe and ballast water is filled or discharged to barge, to adjust the weight of barge.
6. platform cantilever beam load test method according to claim 5, it is characterised in that being risen in the flat car will
In the step of horse leg support and weight are held up, including：
Judge whether the weight of barge exceedes the maximum load of flat car；
If the weight of barge exceedes flat car load-carrying, draining is carried out to barge, until the weight of barge is less than flat car most
Heavy－duty；
Flat car is risen, and the horse leg support is held up.
7. platform cantilever beam load test method according to claim 1, it is characterised in that also including step：
Before rig floor lifts weight, the cantilever beam to cantilevered out ultimate range, measure and record the deformation base of the cantilever beam
Plinth data.
8. platform cantilever beam load test method according to claim 7, it is characterised in that the weight to weight is entered
Row regulation and progressively loaded to rig floor, the step of measuring the deformation data of cantilever beam, including step：
The load capacity of rig floor is loaded, loaded weight reaches the setting percent value of maximum load；
Hook carries loaded weight, stops the scheduled time；
Measure and record the deformation data of cantilever beam.
9. platform cantilever beam load test method according to claim 8, it is characterised in that the percent value of the setting
Respectively 25%, 50%, 75% and 100%.
10. platform cantilever beam load test method according to claim 8, it is characterised in that also including step：
Cantilever beam unloads loads；
Measure and record the secondary deformation basic data of the deformation basic data institute relevant position of cantilever beam；
Contrast the deformation basic data and described time deformation basic data, judge deformation that the structure of cantilever beam occurs whether
Within regime of elastic deformation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109738139A (en) * | 2018-12-26 | 2019-05-10 | 大连中远海运重工有限公司 | Water tank chute type cantilever beam load test method |
| CN111337281A (en) * | 2020-03-09 | 2020-06-26 | 招商局重工（江苏）有限公司 | Method for heavy-load test of semi-submersible type hoisting and disassembling platform |
| CN111947951A (en) * | 2020-07-03 | 2020-11-17 | 中国船舶重工集团公司第七0四研究所 | Land test device and method for submersible lifting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109738139A (en) * | 2018-12-26 | 2019-05-10 | 大连中远海运重工有限公司 | Water tank chute type cantilever beam load test method |
| CN111337281A (en) * | 2020-03-09 | 2020-06-26 | 招商局重工（江苏）有限公司 | Method for heavy-load test of semi-submersible type hoisting and disassembling platform |
| CN111947951A (en) * | 2020-07-03 | 2020-11-17 | 中国船舶重工集团公司第七0四研究所 | Land test device and method for submersible lifting system |
| CN111947951B (en) * | 2020-07-03 | 2022-07-26 | 中国船舶重工集团公司第七0四研究所 | Land test device and method for submersible lifting system |
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