CN106428447A - Ultra-large type multi-floating-body semi-submersible floating platform - Google Patents

Ultra-large type multi-floating-body semi-submersible floating platform Download PDF

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Publication number
CN106428447A
CN106428447A CN201611110187.6A CN201611110187A CN106428447A CN 106428447 A CN106428447 A CN 106428447A CN 201611110187 A CN201611110187 A CN 201611110187A CN 106428447 A CN106428447 A CN 106428447A
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CN
China
Prior art keywords
platform
buoyancy aid
floating
column
span
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Pending
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CN201611110187.6A
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Chinese (zh)
Inventor
宗智
白珍胜
周力
郑文慧
武晓杰
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN201611110187.6A priority Critical patent/CN106428447A/en
Publication of CN106428447A publication Critical patent/CN106428447A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses an ultra-large type multi-floating-body semi-submersible floating platform. The ultra-large type multi-floating-body semi-submersible floating platform comprises an integrated upper housing located above the water surface, an upper-layer building constructed on the upper housing by using the housing as a base body, multiple lower floating bodies partially suspended or floating in water and connected with the upper housing through multiple columns, multiple columns connected with the upper housing and the lower floating bodies respectively and independent mutually and a plurality of supporting rods arranged among the columns corresponding to a part of or all of the lower floating bodies respectively, whereinthe lower floating bodies are parallelly arranged in the width direction of the platform, the corresponding columns are connected in the width direction of the platform to form a whole structure through the supporting rods. The ultra-large type multi-floating-body semi-submersible floating platform combines the advantages of box-type and semi-submersible typefloating platforms and has the advantages of being ultra-large in span, small in size and self weight, small in wavy effect, safe in stormy waves and the like while the problem of overlarge stress at connecting parts is effectively solved.

Description

A kind of ultra-large type many buoyancy aids semi-submersible lng floating platform
Technical field
The present invention relates to field of ocean engineering, relate particularly to a kind of ultra-large type many buoyancy aids semi-submersible lng floating and put down Platform.
Background technology
With the increase of economic growth and population, land resources and space seem and are extremely limited.21 century is comprehensive simultaneously Enter the marine economy development epoch, very abundant biology, oil and mineral products are contained in the ocean exceeding global area more than 2/3 Resource etc., at sea build floating platform to promote the exploitation of China marine resources, the rational and efficient use of air space above sea and Economic sustainable development has extremely far-reaching strategic importance.
Traditional marine reclamation land and draining the method such as are enclosed and cultivated and are not only spent big, long in time limit, but also can destroy ecological ring The balance in border.Then in recent years, the various Very large floating structure knots for the purpose of effectively utilizes air space above sea and exploitation marine resources Structure causes the extensive concern in the world.Common Very large floating structure has following several form, has box (pontoon bridge type) (Pontoon type), partly latent water column foot type (Semi-Submersible Column Footing Type) and low ship of partly diving under water Build (Semi-Submersible Lower Hull Type).Wherein box buoyancy aid simple structure, easy to maintenance, suitably it is used in Shallow sea or offshore waters, hydrodynamic performance is poor;The construction of semi-submersible type buoyancy aid is more complicated, and drinking water is larger, but its hydrodynamic force Can be relatively good, suitably it is used in more severe marine environment.Additionally, the mostly modularity of current practice and main research Super large buoyancy aid, that is, using connector by multiple less buoyancy aid block combiner together, constitutes super large buoyancy aid.The one of such buoyancy aid Individual critical defect is that the excessive problem of stress in connecting portion.As can be seen here, super large buoyancy aid technology exploration direction needs to set Count a kind of span large, volume and deadweight are little, wave force is little, safety in stormy waves, in combination with box and partly latent The advantage of formula, and the version of energy effectively solving connecting portion stress problems of too.
Content of the invention
In view of the defect that prior art exists, the invention aims to provide a kind of ultra-large type many buoyancy aids semi-submersible lng floating Platform, it combines box and semi-submersible type advantage, has span and surpass while effectively solving connecting portion stress problems of too Maximize, volume and deadweight little, wave force is little, safe in stormy waves the advantages of.
To achieve these goals, technical scheme:
A kind of ultra-large type many buoyancy aids semi-submersible lng floating platform is it is characterised in that include:
The upper shell of the integral type more than the water surface;
With described upper shell as matrix, it is built in the superstructure on described upper shell;
Some mass suspension or suspend in water and by multiple columns and floating downward that described upper shell is connected Body, and each described lower buoyancy aid is along the width parallel arrangement of platform;
Multiple columns being connected with described upper shell, body phase of floating downward respectively and being mutually independent;
And some struts being arranged between each corresponding column of some or all of lower buoyancy aid;With by each Each corresponding column is connected as overall structure along the width of platform by described strut.
Further, as the preferred version of the present invention
The span of described platform is preferably placed between 600m~5000m, and its drinking water floating in water is highly not more than institute State the 1/50 of span.
Further, as the preferred version of the present invention
The shape of cross section of described upper shell preferably employs polygon.
Further, as the preferred version of the present invention
The shape of cross section of described lower buoyancy aid preferably employs polygon or ellipse.
Further, as the preferred version of the present invention
Each described lower buoyancy aid dimensions:Its length is the span of platform, and its width is the 1/20 1/ of the width of platform 2, it is highly 2 times of drinking water height to platform full load of drinking water height when platform is unloaded.
Further, as the preferred version of the present invention
All descend 2 times of volumes to the loaded displacement volume of platform for platform displacement of volume when unloaded for the cumulative volume of buoyancy aid Value.
Further, as the preferred version of the present invention
Each described column adopts same dimensions, and is arranged at the spacing distance of the two adjacent upright on same lower buoyancy aid The distance between for its maximum gauge to its maximum gauge 10 times.
Further, as the preferred version of the present invention
The maximum gauge of each described column is 50% the 100% of described lower buoyancy aid width.
Further, as the preferred version of the present invention
Frustum cone structure that described column is gradually successively decreased from top to bottom by diameter and minimum straight with described frustum cone structure lower end Footpath is that the column structure of diameter is constituted.
Further, as the preferred version of the present invention
Each described column is equipped with, with the junction of lower buoyancy aid, the circular shim being connected by bracket auxiliary.
Further, as the preferred version of the present invention
The position of described strut lower surface is not less than the top edge of described bracket.
Further, as the preferred version of the present invention
The main deck of described superstructure at least have the length of span 3/4 of platform and its highly along platform span direction Gradually change.
Further, as the preferred version of the present invention
The height change trend of described superstructure is the variation tendency of stepped distribution.
Further, as the preferred version of the present invention
Carry out structural strengthening at the height change of described superstructure.
Compared with prior art, beneficial effects of the present invention:
Present invention incorporates box and semi-submersible type advantage, such as it is by being efficiently solved even using the overall structure of platform Socket part position stress problems of too;As by the multiple lower float structure along width parallel arrangement and to its volume, structure It is defined so as in full load, there is the good hydrodynamic performance of semi-submersible type super large buoyancy aid and because the distribution of lower buoyancy aid is empty Between length and width is big, quantity multiple features so as to the drinking water still being able to provide enough buoyancy to make platform is less, such that it is able to It is arranged in the less coastal bay of the depth of water or marine site so as to be provided with the light-draft advantage of box super large buoyancy aid;Another its also has The percussion of floating ice column and wave are effectively slowed down under upper shell by the pillar construction form of upper and lower designing two portions The vertical slamming effect on surface, improves platform life span and practicality;And connected in the vertical by the main deck of superstructure Continuous, and at its height change, structure is slowly varying and the design strengthened, it is to avoid the advantages of appearance serious problem of stress concentration.
Brief description
Fig. 1 is main platform body partial schematic diagram of the present invention;
Fig. 2 is the side structure schematic view of platform of the present invention;
Fig. 3 is the forward sight structural representation of platform of the present invention;
Fig. 4 is the partial structural diagram of platform of the present invention.
In figure:1st, upper shell, 2, lower buoyancy aid, 3, column, 4, strut, 5, superstructure, 6, the height change of superstructure Place, 7, bracket, 8, circular shim, 9, platform winter draft line.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention Figure, is clearly and completely described to technical scheme it is clear that described embodiment is that a present invention part is real Apply example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation Property work under the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
As shown in FIG. 1 to 3, ultra-large type many buoyancy aids semi-submersible lng floating platform of the present invention, it includes:
(1) it is located at the upper shell 1 of the integral type of more than the water surface, it is as platform upper structure;Further, as the present invention Preferred version, described upper shell is integral type overall structure, and its shape of cross section preferably employs polygon, such as Fig. 1~Fig. 3, The cross sectional shape of described upper shell 1 is rectangle;Further, as the preferred version of the present invention, described platform has span very Big overall structure, its span is preferably placed between 600m~5000m, and its float over drinking water height in water with respect to platform across Spend very little, i.e. the 1/50 of no more than described span, such as span is 1000m, if pressing Bohai Offshore to meet limit wave work in 200 years one Condition calculates, and its span is up to 5~6 wavelength;Therefore this platform is not easy to topple under the wave action as common ship;With When, the overall structure of described platform also solves the problems, such as that modular form connecting portion stress is excessive.Further, as this Upper shell 1 length described in bright preferred version be equal to platform span 1000m, width be equal to berm width 100m, highly with respect to Platform span is very little, should be not less than platform span 1/1000 and no more than platform span 1/100;If height is 2m.
(2) with described upper shell 1 as matrix, it is built in the superstructure 5 on described upper shell main deck;Further, As the preferred version of the present invention, the main deck of described superstructure should have suitable length, that is, its at least have platform across The length of degree 3/4, if upper casing body length is 1000m, then the overall length of superstructure is 900m, the height of superstructure simultaneously Degree along the span direction gradually consecutive variations of platform, to realize to count the modulus of section in strength check it is ensured that platform Longitudinal strength.Further, the height change trend as superstructure described in the preferred version of the present invention is stepped distribution Variation tendency;Make the arrangement demand by platform for the height of described superstructure 5, Bending moment distribution, intensity requirement etc. stepped At distribution and height change, 6 structures are slowly varying and strengthen, then avoid the occurrence of serious problem of stress concentration as a example being, to ensure The local strength of platform meets requirement.
(3) some mass suspension or float in water and be connected with described upper shell by multiple columns 3 Lower buoyancy aid 2, each described lower buoyancy aid 2 is along the width parallel arrangement of platform;Further, as the preferred version of the present invention, Described lower buoyancy aid as with contact with sea water platform lower structure, the shape of cross section of described lower buoyancy aid preferably employs polygon (square Shape) or oval (circular);And corresponding each lower buoyancy aid column thereon horizontal between connected using strut;Further, As the preferred version of the present invention, the number of described lower buoyancy aid is not less than 2, and described lower buoyancy aid is in the horizontal plane along berm width Direction is arranged in parallel, and the length of distribution space is approximately equal to platform span, and width is approximately equal to berm width;Further, as The preferred version of the present invention, each described lower buoyancy aid dimensions is the span that its length is platform, and its width is not less than platform width The 1/20 of degree and no more than berm width 1/2, its be highly not less than platform unloaded when 2 times of drinking water height and no more than platform The drinking water height of full load.Further, as the preferred version of the present invention, the cumulative volume of buoyancy aid is all descended to be not more than expiring of platform Carry displacement of volume, not less than 2 times of displacement of volume during platform zero load;Further, as the preferred version of the present invention, such as Fig. 2, figure 3 and table 1, preferably described lower buoyancy aid 2 has 6, is arranged in parallel along berm width direction respectively in plane in the horizontal direction;Described The length of lower buoyancy aid 2 distribution space is 1000m, and the width of distribution space is 100m;And the cross section of described lower buoyancy aid 2 is square Shape, long 1000m, wide 10m, high 5m, the cumulative volume of described lower buoyancy aid 2 is 300000m3.Then features above has following technical meaning: Described lower buoyancy aid 2 cumulative volume is less, and is dispersed on the lower buoyancy aid 2 of multiple small sizes, can reduce seaway load to lower buoyancy aid 2 Effect;By limiting the cumulative volume of lower buoyancy aid 2 so that platform has enough drinking water in zero load, meet stability and require;Work as platform Full load, it is ensured that its water line is higher than lower buoyancy aid, is on the less column of water plane area, makes platform be provided with semi-submersible type and surpasses The good hydrodynamic performance of big buoyancy aid;Further, since the length and width of the distribution space of lower buoyancy aid 2 is big, quantity is many, it still is able to There is provided enough buoyancy to make the drinking water of platform less, such that it is able to be arranged in the less coastal bay of the depth of water or marine site, be provided with The light-draft advantage of box super large buoyancy aid.
Table 1
(4) multiple columns 3 being connected and being mutually independent with described upper shell 1, lower buoyancy aid 2 respectively;Further, make For the preferred version of the present invention, each described column adopts same dimensions, and how the number of described column is arranged at very much The spacing distance of the two adjacent upright on same lower buoyancy aid be equal to 10 times of its maximum gauge to its maximum gauge between away from From.Further, as the preferred version of the present invention, the section of each described column is oval, polygon or other analogous shapes, Its maximum gauge is not less than the 1/2 of described lower buoyancy aid width, the width of no more than described lower buoyancy aid;Further, as the present invention Preferred version, such as Fig. 3~Fig. 4, described column 3 is made up of two parts, and part above is gradually successively decreased from top to bottom for diameter Frustum cone structure, the column structure that below portion is its diameter with the equal diameters of going to the bottom of upper part frustum cone structure, be equal to The 3/5 of lower buoyancy aid width, the position that upper and lower two parts connect should be at the winter draft line 9 of platform.This version is permissible Slow down the percussion of floating ice column and wave acts on to the vertical slamming of upper shell lower surface.Further, as the present invention Preferred version make each described column 3 and the junction of lower buoyancy aid 2 be equipped with the circular shim being connected by bracket 7 auxiliary 8.
And some struts 4 being arranged between each corresponding column 3 of some or all of lower buoyancy aid (5);With Each corresponding column is connected as along the width of platform by overall structure by each described strut 4.Further, as this Bright preferred version, each described strut is arranged between each column in berm width direction, and each column is linked to be an overall structure, The cross section of described strut is ellipse, polygon or analogous shape in addition, not needing in all row in berm width direction (i.e. On lower buoyancy aid) column between all strut is set, but if setting, be necessary for all arranging strut between horizontal permutation column; Further, as the preferred version of the present invention, the position of described strut lower surface is not less than the top edge of described bracket.Enter one Step, as the preferred version of the present invention, the cross section of described strut 4 is rectangle, be arranged in berm width direction column 3 it Between, column 3 is linked to be an overall structure;And the position of described strut 4 lower surface column 3 bottom bracket 7 top edge with On, such structure and arrangement form can play certain pressure wave effect.1 row strut is set every 3 row columns, by column even Become an entirety, to ensure the transverse strength of platform.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.

Claims (10)

1. a kind of ultra-large type many buoyancy aids semi-submersible lng floating platform is it is characterised in that include:
The upper shell of the integral type more than the water surface;
With described upper shell as matrix, it is built in the superstructure on described upper shell;
Some mass suspension or the lower buoyancy aid floating in water and being connected with described upper shell by multiple columns, and respectively Described lower buoyancy aid is along the width parallel arrangement of platform;
Multiple columns being connected with described upper shell, body phase of floating downward respectively and being mutually independent;
And some struts being arranged between each corresponding column of some or all of lower buoyancy aid;With by each described Each corresponding column is connected as overall structure along the width of platform by strut.
2. platform according to claim 1 it is characterised in that:
The span of described platform is preferably placed between 600m~5000m, and absorbs water the 1/50 of height no more than described span.
3. platform according to claim 1 it is characterised in that:
Each described lower buoyancy aid dimensions is:Its length is the span of platform, and its width is the 1/20 1/2 of the width of platform, It is highly 2 times of drinking water height to platform full load of drinking water height when platform is unloaded.
4. platform according to claim 1 it is characterised in that:
All descend 2 times of bulking values to the loaded displacement volume of platform for platform displacement of volume when unloaded for the cumulative volume of buoyancy aid.
5. platform according to claim 1 it is characterised in that:
Each described column adopt same dimensions, and be arranged at the two adjacent upright on same lower buoyancy aid spacing distance be its Maximum gauge is to the distance between 10 times of its maximum gauge.
6. platform according to claim 1 it is characterised in that:
The maximum gauge of each described column is 50% the 100% of described lower buoyancy aid width.
7. platform according to claim 1 it is characterised in that:
Frustum cone structure that described column is gradually successively decreased from top to bottom by diameter and be with described frustum cone structure lower end minimum diameter The column structure of diameter is constituted.
8. platform according to claim 1 it is characterised in that:
Each described column is equipped with, with the junction of lower buoyancy aid, the circular shim being connected by bracket auxiliary.
9. platform according to claim 1 it is characterised in that:
The position of described strut lower surface is not less than the top edge of described bracket.
10. platform according to claim 1 it is characterised in that:
The main deck of described superstructure at least has the length of the span 3/4 of platform, and it is highly along along platform span direction Gradually change.
CN201611110187.6A 2016-12-06 2016-12-06 Ultra-large type multi-floating-body semi-submersible floating platform Pending CN106428447A (en)

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CN107972827A (en) * 2017-12-11 2018-05-01 深圳市海斯比浮岛科技开发有限公司 Floating dock and its float structure
WO2018210197A1 (en) * 2017-05-16 2018-11-22 唐山航岛海洋重工有限公司 Large floating structure, and basic module of very large floating structure
WO2018210199A1 (en) * 2017-05-16 2018-11-22 唐山航岛海洋重工有限公司 Highly safe large floating structure
CN109927855A (en) * 2018-07-19 2019-06-25 国家海洋局第二海洋研究所 Adaptive relocatable floating wave dissipating platform
CN116080841A (en) * 2022-12-08 2023-05-09 保利长大工程有限公司 Floating platform for integrated construction of water pile foundation

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CN109927855A (en) * 2018-07-19 2019-06-25 国家海洋局第二海洋研究所 Adaptive relocatable floating wave dissipating platform
CN116080841A (en) * 2022-12-08 2023-05-09 保利长大工程有限公司 Floating platform for integrated construction of water pile foundation

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