CN110468816A - A kind of sliding installation method and system of marine electrical platform - Google Patents
A kind of sliding installation method and system of marine electrical platform Download PDFInfo
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- CN110468816A CN110468816A CN201910614897.XA CN201910614897A CN110468816A CN 110468816 A CN110468816 A CN 110468816A CN 201910614897 A CN201910614897 A CN 201910614897A CN 110468816 A CN110468816 A CN 110468816A
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- truss
- chunking
- vehicle group
- double layer
- upper chunk
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
Abstract
The invention belongs to ocean engineering fields, especially offshore wind power development field, more particularly, to the sliding installation method and system of a kind of marine electrical platform.Have following the utility model has the advantages that 1) applied widely, the deep installation with ultra-large type ocean platform of Very Shallow Water can be competent at, in addition to necessary support construction requirement for bearing capacity, it is less to the restrictive requirement of transport barge, upper chunk and lower part chunking, the classical architecture pattern of platform is with arrangement without changing, the selection face of engineering optimization is widened, and the duration can be effectively controlled with project amount.2) upper chunk of offshore platform can carry out steady, accurate, controllable operation by track and SPMT vehicle group with docking for lower part chunking, avoid in lift-on/lift-off system or floating support method it is possible that collision and tilt problem, it is not necessary to the butt-joint cushion device of pile junction is set again.3) each step convenient construction, it is easy to operate, there is significant economic benefit of engineering.
Description
Technical field
The invention belongs to ocean engineering fields, especially offshore wind power development field, more particularly, to a kind of marine electrical
The sliding installation method and system of platform.
Background technique
With deepening continuously for ocean development, more and more offshore platforms come into operation.In most of engineering project,
The mounting process of platform is one of the deciding factor for determining engineering economy, while also having great influence to structural shape.
The conventional installation practice of ocean platform is to be placed on upper chunk lifting using crane barge transport barge to have built well down in advance
In portion's foundation structure (such as jacket, high-rise pile cap), the relevant technologies comparative maturity, however the application of lift-on/lift-off system but exist with
Lower several points limitation:
1) drinking water of large-scale floating crane transport barge is larger, has the risk bottomed out in the lesser situation of the depth of water, can not be applied to beach
It applies or the offshore platform in Very Shallow Water deep-sea domain is installed；
2) the maximum hoisting weight of most crane barge transport barges is no more than 10,000 tons in the world at present, is unable to satisfy super large
The hoisting safety requirement of the above ocean platform of 10,000 tons such as type oil gas platform and marine converter station；
3) demand of current crane barge resource engineering yet to be built opposite with window phase is very well sold and in short supply, is unable to satisfy extensive ocean development
Duration and cost-effectiveness requirement.
The above-mentioned offshore wind power development field that is limited in is embodied particularly evident.At this stage, the subsidy of marine wind electric field exploitation
Trend of falling off is more obvious, and relevant engineering technology is forced to accelerate the paces of upgrading.If Hoisting Program must be used,
Then Part Development project will lose economy.In terms of the mounting technique of at sea electrical platform: it is above-mentioned 1) in the case where, it is existing
A point structural shape for column modular offshore boosting station (patent publication No. CN204126320U) can be used in technology, using lifting energy
Power is smaller but drinking water requires lower crane barge resource, but this technology can not solve the feelings that site is located at Very Shallow Water depth or beach condition
Condition, and fraction block structure too late monolithic construction in load-carrying properties and building technology；In the case where 2), the prior art
Solution be to be installed using floating support method (patent publication No. CN109056684A), but floating support mounting can be carried out
Barge resource is equally limited, and in the related technology to the crusherbull zone in the fluting of base support, upper and lower chunking connection procedure all
There is particular/special requirement, Project design period and project amount are above Hoisting Program.
Summary of the invention
The technical problem to be solved by the present invention is
Ocean platform, especially marine electrical platform should not be installed in many cases using lifting mode.It is existing to replace
For solution technique, there is also many otherwise limitation requirements, if structural shape is forced to weaken, selection engineering transportation barge
Enlargement, special typeization, depth condition cannot be too deep or excessively shallow etc..Therefore, need to propose it is a kind of safely, conveniently, it is efficiently marine
The sliding installation method of electrical platform, had both been able to satisfy top, lower part chunking in shipment, transport, installation and in-service overall process
In structural bearing performance, while the shape, arrangement, pattern that need not force chunking and existing mature scheme be there are marked difference,
It will not additionally increase workload and project amount, and loosen the limitation to optional engineering transportation barge and the site depth of water, ensure work
The feasibility and economy of journey.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of sliding installation method of marine electrical platform, the sliding installation method of the marine electrical platform includes: sea
After the completion of build the side is built, lower part is arranged double layer support truss and carries out temporary support, purlin the upper chunk of upper electrical platform
It is supported below frame by SPMT vehicle group, SPMT vehicle group is placed on the sliding rail of build the side, and same width is arranged on transport barge
Track and braced frame；The upper chunk and double layer support truss of marine electrical platform carry out sliding dress by SPMT vehicle group
Ship, then by barging to the construction site of marine electrical platform；
The fixed basis of marine electrical platform lower installs in advance, setting and build the side and fortune in upper horizontal plane
Matched track on defeated barge；The upper chunk and double layer support truss of marine electrical platform are still supported by SPMT vehicle group and by transporting
Defeated barge slides onto the predetermined position in the lower part chunking of marine electrical platform, so that the main connecting column horizontal position of upper chunk
It is aligned with the stake top of lower part chunking；The hydraulic jacking device of SPMT vehicle group is in a high position during sliding is appeared on the stage, upper chunk
There are certain interval, the hydraulic jacking devices of rear SPMT vehicle group in place to fall for the stake top of main connecting column lower surface and lower part chunking,
So that each stake, column surface are steadily docked, then carry out site welding to pile junction, finally by SPMT vehicle group hydraulic device tune
To lowest order, and it is retracted on transport barge together with double layer support truss along track.
The present invention can also be used or be combined and adopt the following technical scheme that while using above technical scheme
As the preferred technical solution of the present invention, the scale of the double layer support truss is determined with topology by the following conditions:
(1) border width is 2 m smaller than the spacing of the principal post connecting plate inside edge of upper chunk, i.e., double during sliding is appeared on the stage
There are 1 gaps m with stake-column main shaft for layer sub-truss two sides outer edge；
(2) the hydraulic pressure support spacing of twice bigger than the stake-spacing of column main shaft in this direction of axial length of SPMT vehicle group, i.e.,
Guarantee that the hydraulic pressure support position of first, last two rows trolley can be consistent with the position of the orthogonal strut of double layer support truss；
(3) in addition to the edge frame node of width direction, the horizontal position of host node and beam column, the beam on one layer of deck of upper chunk
It supports the strong structures such as node to correspond to, is arranged between the flange plate up and down of one layer of girder of upper chunk at edge frame support and puts more energy into
Rib；
(4) chock is set between upper chunk and a node layer of double layer support truss, and triangle crosspiece, triangle crosspiece is arranged in chock two sides
Lower surface welded with double layer support truss, the lower surface spot welding of upper surface and one layer of deck beam of upper chunk；
(5) height of double layer support trussH bf , it is upper surface to the spacing between lower surface, is determined by following formula:
H bf = E t1 – E j1 – H tb1 – H w – H 10
In formula:E t1For the crest level of one layer of deck beam of upper chunk,E j1For the top-most-surface plane elevation of lower part chunking,H tb1 For top
One layer of main depth of beam in deck of chunking,H w For the height of chock,H 10Vehicle bottom surface when for vehicle group hydraulic device top lifting height being 10 cm
To the distance of sub-truss lower surface.
As the preferred technical solution of the present invention, the SPMT Che Zuwei self-propelled hydraulic platform trailer, separate unit flat car
It is made of the pallet of former and later two hydraulic devices and top；Vehicle group columns is according to build the side, the track of barge and lower part chunking
Number determines that one group of end to end flat car is defined as arranging；The position of hydraulic device and support before and after the flat car of each column head and the tail
The node location of truss is corresponding, vehicle group in addition to this along column direction uniformly, be arranged symmetrically, every flat car in same row it
Between entirety is fixedly connected to form by pallet；The jacking stroke of vehicle group hydraulic device is selected to be not less than 50 cm；Slide the mistake appeared on the stage
Cheng Zhong, since datum level is uneven or transport barge movement, hydraulic device can compensate automatically, but each device before docking of falling
Top lifting height be not less than 35 cm；After the completion of docking, the top lifting height of each device is not less than 10 cm, then when vehicle group and support
When truss exits, the gap of upper surface and upper chunk is not less than 10 cm.
As the preferred technical solution of the present invention, the transport barge load upper chunk and double layer support truss it
Before, the attachment rail support platform on its deck in advance；After upper chunk and double layer support truss are in place, on the side of width direction
The interim binding structural member of tripod type is installed in edge frame joint position, and lower surface and main deck weld, upper surface and edge frame
Node carries out spot welding；Meanwhile to the main section on lateral facade double layer support truss two sides one layer of stake of upper chunk-column main shaft
The interim binding structural member of cast is arranged in point, and lower surface and main deck weld, girder at upper surface and one layer of host node of upper chunk
Bottom wing listrium lower surface carry out spot welding；Behind transport to place predetermined position, before sliding is appeared on the stage, all interim binding structural members
It is cut off.
As the preferred technical solution of the present invention, the lower part chunking is preferably jacket or high-rise pile cap, in jacket
Upper stull face or the upper surface of high-rise pile cap matched track girder, track extending direction are set, that is, slide installation direction, be
Along the biggish main shaft of lower part chunking planar dimension to that is, track girder intersects with the lesser facade of scale；The length of rail support structures
Degree, width are mating and symmetrical about planar central with the double layer support truss of upper chunk.It is J-type pipe, attached by ship ladder etc.
Component is arranged on the outside of the biggish facade of two scales, to evade risk of collision.
As the preferred technical solution of the present invention, build the side leaves side, transport barge both lateral sides, lower part chunking sliding
The track girder of two sides is all made of the identical square steel of model or square tube, and extreme position is equipped with fluting, can temporarily place connection lintel, just
It is shifted between different carriers in upper chunk and double layer support truss.
As the preferred technical solution of the present invention, the upper chunk, double layer support truss, lower part chunking, transport barge
Each component and node size design by shipment, transport and installation operating conditions, wherein shipment with installation operating condition successively
Consider the reassignment of bearing reaction and Path of Force Transfer caused by each drain pressure device is hanging.
As the preferred technical solution of the present invention, process of appearing on the stage is slid, selection is carried out in right up and down window phase；It appears on the stage
Before, one row's berthing pile of installation in advance in front of the facade of platform side in design, for during appearing on the stage to transport barge into
Row mooring avoids transport barge and lower part chunking direct collision；Furthermore during appearing on the stage transport barge itself also through heaving pile with
Seabed carries out anchoring fixation, to control surging and the swaying motion of transport barge, transport barge is carried self by hydraulic compartment tune,
Ensure that the heave movement of itself is no more than 15 cm.
A further object of the invention is, for the deficiencies in the prior art, provides a kind of electrical platform in sea
Sliding installation system.
For this purpose, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of sliding installation system of marine electrical platform, the sliding installation system of the marine electrical platform includes sea
Upper chunk, double layer support truss, SPMT vehicle group, transport barge, lower part chunking and the fixed basis of electrical platform；On described
By double layer support truss temporary support, the double layer support truss is arranged in SPMT vehicle group and is supported by it portion's chunking, described
The upper chunk and double layer support truss that transport barge is used to support and transports SPMT vehicle group and be arranged in SPMT vehicle group；It is described
Lower part chunking is arranged on the basis of fixed and for being connected to each other with upper chunk and being used to support upper chunk upwards.
The present invention can also be used or be combined and adopt the following technical scheme that while using above technical scheme
As the preferred technical solution of the present invention, the lower part chunking is jacket or high-rise pile cap.
The present invention provides the sliding installation method and system of a kind of marine electrical platform, have it is following the utility model has the advantages that
1) applied widely, the deep installation with ultra-large type ocean platform of Very Shallow Water can be competent at, remove necessary support construction bearing capacity
It is required that outer, the classical architecture pattern and arrangement of platform less to the restrictive requirement of transport barge, upper chunk and lower part chunking
Scheme is without changing, and the selection face of engineering optimization is widened, and the duration can be effectively controlled with project amount.
2) upper chunk of offshore platform can carry out steady, essence by track and SPMT vehicle group with docking for lower part chunking
Really, operation controllably, avoid in lift-on/lift-off system or floating support method it is possible that collision and tilt problem, it is not necessary to pile is set again
The butt-joint cushion device of junction.
3) each step convenient construction, it is easy to operate, there is significant economic benefit of engineering.
Detailed description of the invention
Fig. 1 is that the sliding installation method of marine electrical platform provided by the present invention shows in the three-dimensional for sliding process of appearing on the stage
It is intended to.
Fig. 2 is the sliding installation method of marine electrical platform provided by the present invention in upper chunk and lower part chunking pair
Schematic three dimensional views when connecing.
Fig. 3 is upper chunk-double layer support truss-SPMT vehicle group plane perspective view.
Fig. 4 a is the cross-sectional view in the direction B-B D-D in Fig. 3, and Fig. 4 b is the cross-sectional view in the direction C-C in Fig. 3；Fig. 4 c is figure
The cross-sectional view in the direction 1-1 5-5 in 3；Fig. 4 d is the cross-sectional view in the direction 2-2 4-4 in Fig. 3；Fig. 4 e is the side 3-3 in Fig. 3
To cross-sectional view.
Fig. 5 is the arrangement schematic diagram of binding structural member.
Fig. 6 is the schematic three dimensional views of jacket.
Fig. 7 a is the connection schematic diagram for connecting lintel；Fig. 7 b is the partial enlarged view for connecting the junction of lintel.
Fig. 8 is the floor map of transport barge when sliding is appeared on the stage.
Specific embodiment
To further illustrate the content of present invention, feature and effect, hereby enumerating a lower part chunking is jacket, upper chunk
3000 tonnes, the electrical platform embodiment in sea of 4 m of the locating depth of water or so, and cooperate Detailed description of the invention as follows:
(1) as shown in Figure 1 and 2, the present embodiment is made of the following contents: the electrical platform upper chunking in 1-3000 tonnes of sea, 2- are bis-
Layer sub-truss, 3-SPMT vehicle group, 4- transport barge, 5- jacket.Upper chunk 1 is built in Wharf Base, and by double
Layer sub-truss 2 carries out temporary support, on the horizontal tray of the SPMT vehicle group 3 supported below of double layer support truss 2.Upper chunk
1, double layer support truss 2 slides onto transport barge 4 from build the side by SPMT vehicle group 3 together, transport barge 4 by upper chunk 1,
Double layer support truss 2, the transport of SPMT vehicle group 3 to place where the platform, installation and piling finish jacket 5 in advance；Transport
After barge 4 is in place, by SPMT vehicle group 3 by upper chunk 1, the jacking of double layer support truss 2 to maximum height and from the right side of jacket 5
Sideslip moves to the predetermined position on jacket 5, then turns down the hydraulic lifting height of SPMT vehicle group 3, makes transport barge 4, conduit
Frame 5 docks and carries out site welding；After the completion of welding that the hydraulic device high recovery of SPMT vehicle group 3 is in situ, SPMT vehicle group 3 connects
It is retracted into transport barge 4 with double layer support truss 2, completes installation.In the present embodiment, the hydraulic device of SPMT vehicle group 3 is maximum
Top lifting height is 50 cm；It is compensated automatically during sliding is appeared on the stage since table top is uneven or transport barge heave movement, but single
The top lifting height of a device is not less than 35cm always；Upper chunk 1, double layer support truss 2, the sliding of SPMT vehicle group 3 are appeared on the stage in place
Afterwards, the gap between the lower surface of upper chunk 1 and the upper surface of jacket 5 is 25 cm；After the completion of docking, SPMT vehicle group 3
Each hydraulic device top lifting height is not less than 10 cm.
(2) as shown in Fig. 3 ~ 4: the B of the present embodiment middle and upper part chunking 1 D axis and 15 axis be pile connection main shaft, 1-5
Distance between axles is greater than B-D distance between axles, the crest level of one layer of deck girder 11E t1=16.00 m, the height of one layer of deck girder 11H tb1 = 0.8 m；The inward flange gap of 21 outer edge of edge frame and principal post the welding sealing plate 12 of double layer support truss 2 is 1 m,
The position of central frame 22 and one layer of deck B of upper chunk 1 bean column node, beam support node location between D axis it is corresponding；Side
Standard chock 23, standard pad are provided between each node and one layer of deck girder 11 on 22 upper layer of edge frame 21 and central frame
The height of wood 23H w =0.3m, the two sides of standard chock 23 are triangle crosspiece 24, the upper and lower surfaces of triangle crosspiece 24 respectively with bilayer
The upper surface of sub-truss 2 and the lower surface of one layer of deck girder 11 carry out spot welding；Two train groups, 31 He is arranged in SPMT vehicle group 3
32, track is parallel with B ~ D axis with glide direction, and totally 5 flat cars, every flat car have front and back two to every train groups in the present embodiment
A hydraulic jacking device, the hydraulic jacking device position of head and the tail flat car and the head and the tail of double layer support truss 2 in the longitudinal direction
Each two rows frame position is consistent, and intermediate 3 flat cars are arranged respectively about 2,3,4 axial symmetry.
(3) in the present embodiment, the upper surface elevation of the upper layer stull of jacket 5E j1=9.6 m, SPMT vehicle group 3 it is hydraulic
Distance of the vehicle bottom surface to 2 lower surface of double layer support truss when device top lifting height is 10 cmH 10=1.5 m, then by technical solution
Described in formula, height between the upper and lower surface of double layer support truss 2H bf For 3.8 m.
(4) as shown in figure 5, being laterally equipped with track support platform 41 in advance along the hull of transport barge 4 in the present embodiment
With 42, center line spacing with 31 and 32 centreline space away from being consistent.It is arranged at the downside host node of edge frame 21
The main deck of tripod type binding structural member 43, the bottom surface of tripod type binding structural member 43 and transport barge 4 welds, upper surface with
It welds the lower surface of edge frame 21；One layer of deck girder 11 B cast is set at the host node that intersects with 2,3,4 axis of D axis
Binding structural member 44, the bottom surface of cast binding structural member 44 and the main deck of transport barge 4 weld, upper surface and one layer of deck girder
11 lower surface welding.After transport barge 4 reaches designated position, before carrying out sliding and appearing on the stage, by tripod type binding structural member
43 and cast binding structural member 44 cut off.
(5) as shown in fig. 6, in the present embodiment, the structural shape and conventional catheters frame of jacket 5 are essentially identical, but increase
The spacing of 4 Pin sunk type track sub-trusses 51,52,53,54,51 and 52 and 53 and 54 center lines and every flat car
Coaxial wheel centreline space away from identical, and with it is 31,32 and 41,42 mating.The top boom of every truss structure uses rhs-structure, upper table
Face and the upper horizontal brace surface of jacket 5 are evened up, and elevation isE j1=9.6m, total length are complete slightly larger than double layer support truss 2
It is long；Lower boom and strut are all made of dome-like roof, and lower boom is only supported on the upper layer X-type strut of shorter edge facade.J-type pipe,
The outside of longer sides facade is arranged in by the Accessory Members such as ship ladder 55, the collision problem during appearing on the stage to avoid sliding.
(6) as shown in fig. 7,41 ~ 42 and 51 ~ 54 track girder two sides extreme position is all made of the identical square tube of model,
End position is equipped with fluting 61, and the prefabricated spherical limit configuration 62 in bottom can cooperate with the end aperture 64 for connecting lintel 63, be convenient for
Live rapid deployment, auxiliary upper chunking 1, double layer support truss 2, SPMT vehicle group 3 carry out between transport barge 4, jacket 5
Transfer.
(7) in the present embodiment, auxiliary upper chunking 1, double layer support truss 2, transport barge 4, each component of jacket 5 with
The size design of node is by shipment, transport and installation operating conditions, wherein successively considering SPMT vehicle group 3 in shipment and installation operating condition
5 group of 10 drain pressure device it is hanging caused by bearing reaction and Path of Force Transfer reassignment.
(8) as shown in figure 8, squeezing into row's mooring pile 71 in advance on the right side of jacket 5.Transport barge 4 reaches pre-determined bit
Berthing is postponed on mooring pile 71, will not be collided with jacket 5.Installation operation selection the good window phase of weather condition into
Row, transport barge 4 are anchored by heaving pile 72 and mooring pile 71 and seabed, for limiting in sliding installation process in system
Portion's chunking 1, double layer support truss 2, SPMT vehicle group 3, the movement of the three-dimensional of transport barge 4, ensure the heave movement of transport barge 4 not
More than 15 cm.
Above embodiments are only a kind of more excellent technical solution of the invention, it will be understood by those of skill in the art that not
Be detached from the principle of the present invention and essential situation can in embodiment technical solution or parameter modify or replace, all
It is covered by the protection scope of the present invention.
Claims (10)
1. a kind of sliding installation method of marine electrical platform, which is characterized in that the sliding peace of the marine electrical platform
Dress method includes: the upper chunk of marine electrical platform after the completion of build the side is built, lower part be arranged double layer support truss into
Row temporary support, truss lower section are supported by SPMT vehicle group, and SPMT vehicle group is placed on the sliding rail of build the side, on transport barge
The track and braced frame of same width are set；The upper chunk and double layer support truss of marine electrical platform are by SPMT vehicle group
Slippage shipment is carried out, then by barging to the construction site of marine electrical platform；
The fixed basis of marine electrical platform lower installs in advance, setting and build the side and fortune in upper horizontal plane
Matched track on defeated barge；The upper chunk and double layer support truss of marine electrical platform are still supported by SPMT vehicle group and by transporting
Defeated barge slides onto the predetermined position in the lower part chunking of marine electrical platform, so that the main connecting column horizontal position of upper chunk
It is aligned with the stake top of lower part chunking；The hydraulic jacking device of SPMT vehicle group is in a high position during sliding is appeared on the stage, upper chunk
There are certain interval, the hydraulic jacking devices of rear SPMT vehicle group in place to fall for the stake top of main connecting column lower surface and lower part chunking,
So that each stake, column surface are steadily docked, then carry out site welding to pile junction, finally by SPMT vehicle group hydraulic device tune
To lowest order, and it is retracted on transport barge together with double layer support truss along track.
2. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that the double layer support
The scale of truss is determined with topology by the following conditions:
(1) border width is 2 m smaller than the spacing of the principal post connecting plate inside edge of upper chunk, i.e., double during sliding is appeared on the stage
There are 1 gaps m with stake-column main shaft for layer sub-truss two sides outer edge；
(2) the hydraulic pressure support spacing of twice bigger than the stake-spacing of column main shaft in this direction of axial length of SPMT vehicle group, i.e.,
Guarantee that the hydraulic pressure support position of first, last two rows trolley can be consistent with the position of the orthogonal strut of double layer support truss；
(3) in addition to the edge frame node of width direction, the horizontal position of host node and beam column, the beam on one layer of deck of upper chunk
It supports the strong structures such as node to correspond to, is arranged between the flange plate up and down of one layer of girder of upper chunk at edge frame support and puts more energy into
Rib；
(4) chock is set between upper chunk and a node layer of double layer support truss, and triangle crosspiece, triangle crosspiece is arranged in chock two sides
Lower surface welded with double layer support truss, the lower surface spot welding of upper surface and one layer of deck beam of upper chunk；
(5) height of double layer support trussH bf , it is upper surface to the spacing between lower surface, is determined by following formula:
H bf = E t1 – E j1 – H tb1 – H w – H 10
In formula:E t1For the crest level of one layer of deck beam of upper chunk,E j1For the top-most-surface plane elevation of lower part chunking,H tb1 For top
One layer of main depth of beam in deck of chunking,H w For the height of chock,H 10Vehicle bottom surface when for vehicle group hydraulic device top lifting height being 10 cm
To the distance of sub-truss lower surface.
3. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that the SPMT vehicle group
For self-propelled hydraulic platform trailer, separate unit flat car is made of the pallet of former and later two hydraulic devices and top；Vehicle group columns root
Determine that one group of end to end flat car is defined as arranging according to the track number of build the side, barge and lower part chunking；Each column head and the tail
The position of hydraulic device is corresponding with the node location of sub-truss before and after flat car, vehicle group in addition to this is uniform along column direction,
It is arranged symmetrically, entirety is fixedly connected to form by pallet between every flat car in same row；Select vehicle group hydraulic device
It jacks stroke and is not less than 50 cm；During sliding is appeared on the stage, since datum level is uneven or transport barge movement, hydraulic device meeting
Automatic compensation, but the top lifting height of each device is not less than 35 cm before docking of falling；After the completion of docking, each device
Top lifting height is not less than 10 cm, then when Che Zuyu sub-truss exits, the gap of upper surface and upper chunk is not less than 10
cm。
4. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that the transport barge
Before loading upper chunk and double layer support truss, the attachment rail support platform on its deck in advance；Upper chunk and double
After layer sub-truss is in place, the interim binding structural member of tripod type, following table are installed in the edge frame node location of width direction
Face and main deck weld, and upper surface and edge frame node carry out spot welding；Meanwhile on lateral facade double layer support truss two sides
The interim binding structural member of cast is arranged in host node on one layer of stake of portion's chunking-column main shaft, and lower surface and main deck weld, on
The bottom wing listrium lower surface of girder carries out spot welding at surface and one layer of host node of upper chunk；Behind transport to place predetermined position,
Before sliding is appeared on the stage, all interim binding structural members are cut off.
5. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that the lower part chunking
Matched track girder is arranged in the upper stull face of jacket or the upper surface of high-rise pile cap in preferably jacket or high-rise pile cap,
Track extending direction, that is, slide installation direction, for along the biggish main shaft of lower part chunking planar dimension to i.e. track girder and scale
Lesser facade intersection；The length of rail support structures, width are mating with the double layer support truss of upper chunk, and about flat
Face central symmetry.
6. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that build the side leaves
Side, transport barge both lateral sides, lower part chunking sliding two sides track girder be all made of the identical square steel of model or square tube, end position
Fluting has been installed, connection lintel can have temporarily been placed, be turned between different carriers convenient for upper chunk and double layer support truss
It moves.
7. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that the upper group
Block, double layer support truss, lower part chunking, each component of transport barge and node size design by shipment, transport and installation
Operating conditions, wherein bearing reaction and power transmission road caused by shipment successively considers that each drain pressure device is hanging with installation operating condition
The reassignment of diameter.
8. the sliding installation method of marine electrical platform according to claim 1, which is characterized in that sliding was appeared on the stage
Journey, selection are carried out in right up and down window phase；Before appearing on the stage, one row of installation is leaned in advance in front of the facade of platform side in design
Ship stake avoids transport barge and lower part chunking direct collision for carrying out mooring to transport barge during appearing on the stage；This is outside upper
Transport barge itself carries out anchoring fixation also through heaving pile and seabed during platform, to control the surging and swaying of transport barge
Movement, transport barge are carried self by hydraulic compartment tune, ensure that the heave movement of itself is no more than 15 cm.
9. a kind of sliding installation system of marine electrical platform, which is characterized in that the sliding peace of the marine electrical platform
Dress system includes the marine electrically upper chunk of platform, double layer support truss, SPMT vehicle group, transport barge, lower part chunking and consolidates
Fixed pattern basis；The upper chunk is arranged in SPMT vehicle group by double layer support truss temporary support, the double layer support truss
And be supported by it, the transport barge is used to support and transports SPMT vehicle group and the upper chunk that is arranged in SPMT vehicle group and double
Layer sub-truss；The lower part chunking is arranged on the basis of fixed and for being connected to each other and being used for support upwards with upper chunk
Upper chunk.
10. the sliding installation system of marine electrical platform according to claim 9, which is characterized in that the lower part group
Block is jacket or high-rise pile cap.
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| CN111046481A (en) * | 2019-12-27 | 2020-04-21 | 中国能源建设集团广东省电力设计研究院有限公司 | Design method for connection of marine module and pile |
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| CN111469992A (en) * | 2020-03-17 | 2020-07-31 | 中国电建集团华东勘测设计研究院有限公司 | Floating offshore wind power structure foundation with damping effect and stability control method |
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| WO2023020381A1 (en) * | 2021-08-19 | 2023-02-23 | 中交第三航务工程局有限公司 | Fabricated platform for offshore wind power monopile rock-socketed foundation construction |
| CN114991072A (en) * | 2022-05-20 | 2022-09-02 | 中交第二航务工程局有限公司 | Inter-pile mud dredging and stone throwing operation platform for high-pile wharf and operation method |
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