CN208685648U - A kind of suction type combination foundation structure suitable for stratum of easily liquefying - Google Patents
A kind of suction type combination foundation structure suitable for stratum of easily liquefying Download PDFInfo
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- CN208685648U CN208685648U CN201821198558.5U CN201821198558U CN208685648U CN 208685648 U CN208685648 U CN 208685648U CN 201821198558 U CN201821198558 U CN 201821198558U CN 208685648 U CN208685648 U CN 208685648U
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Abstract
The utility model discloses a kind of suction type combination foundation structures suitable for stratum of easily liquefying, including a suction caisson structure, centered on the axis of suction caisson structure, at least one circle suction type stake is equipped in the outer ring of suction caisson structure, every circle suction type stake includes multiple suction type stakes, and multiple suction type stakes are uniformly distributed along the outer ring of suction caisson structure；It is connected between suction caisson structure and suction type stake with attachment device.Suction caisson structure is connected with suction type stake by wirerope, enduringly improves suction caisson structure foundation stability, efficiently reduces suction caisson structure in the deformation of liquefaction stratum or soft stratum；And original suction caisson structure is flexible and extendable outward, the unfavorable geological conditions such as weak sea bed can be effectively adapted to, there is controllability.At the same time, as marine petroleum exploitation platform Deep Foundation Structure, construction technology is mature, convenient and efficient for suction caisson and suction type pile foundation.
Description
Technical field
The utility model relates to Geotechnical Engineering fields, especially build in blue water energy extraction platform infrastructure
If providing a kind of suction type combination foundation structure suitable for stratum of easily liquefying.
Background technique
Suction caisson foundation structure is a kind of open bottom end, the major diameter steel drum structure of upper end closed, has and makes
Valence is low, the advantages such as reusable, in deep water Offshore Platform Engineering using more and more.However, wave cycle load, sea
It is washed away caused by stream and will affect the bearing capacity of ocean substrate with geological process etc., and then jeopardize the peace of suction caisson structure
Entirely.Foundation structure of the suction caisson foundation as ocean platform is used in deep-sea area, base stabilization is most important；If
Liquefaction occurs for ocean foundation under different dynamic loadings, causes foundation unstable, easily causes suction caisson
Foundation structure is toppled deformation, to jeopardize upper ocean platform personnel life security and damage production equipment.At the same time, ocean
Environment is different from land, the changeable complexity of environmental factor, and sea bed geology is mostly soft clay or sand；In wave, ocean current, earthquake
Under equal dynamic loadings, easily induction offshore platform foundation structural instability is destroyed.It is continuous to deep-sea with Chinese Sea resource
Exploitation, marine energy exploitation will welcome the period of accelerating development, however traditional suction caisson foundation structure cannot be guaranteed depth
The stability of ocean platform on extra large liquefied foundation, this just constrains the development and application of suction caisson structure.For this purpose, will pass
System suction caisson structure and suction type pilework form a kind of novel suction caisson foundation structure, liquescent soft to meet
The construction and stabilization of weak stratum or deep-sea area submerged structure.
Simultaneously as ocean suction caisson foundation structural volume is huge, transports and install and is relative complex；Large volume suction
Formula caisson foundation structure in installation process, is lowered into sea bed, due to sea-bed formations soft clay at the scene in inside and outside differential pressure effect
Or sand inhomogeneities causes large volume caisson foundation structure memory to have air, is unable to satisfy caisset and all sinks to sea bed,
Causing suction caisson foundation structure in this way, there are marginal security hidden danger, and upper ocean production platform is easily caused to topple change
Shape, to jeopardize construction personnel's life security and damage production equipment.At the same time, large volume suction caisson foundation structure
Work progress needs to put into a large amount of manpower, equipment and financial resources, while also adding construction risk.With Chinese Sea resource
Constantly to ocean petroleum developing, Conventional marine suction caisson foundation structure, which cannot be guaranteed that marine resources are fast and efficiently developed, to be needed
It asks, this just constrains the development and application of suction caisson foundation structure.
Utility model content
The utility model to solve the above-mentioned problems, proposes a kind of novel ocean platform suction suitable for stratum of easily liquefying
Power formula caisset, the structure can effectively improve the scope of application of suction caisson structure, reduce suction caisson structure
Foundation instability destroys, enduringly improves its self-stability energy, the personnel safety during guaranteeing suction caisson structure construction and runing
And equipment operation.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of suction type combination foundation structure suitable for stratum of easily liquefying, including a suction caisson structure, to inhale
Centered on the axis of power formula caisset, at least one circle suction type stake, every circle suction are equipped in the outer ring of suction caisson structure
Formula stake includes multiple suction type stakes, and multiple suction type stakes are uniformly distributed along the outer ring of suction caisson structure；Suction caisson knot
It is connected between structure and suction type stake with attachment device.
Further, the suction type stake is the hollow pilework top closed, bottom is open, and steel is equipped at the top of it
Cord interconnecting piece.
Further, the attachment device uses wirerope, and the material of wirerope selects carbon steel.
Further, one end of the wirerope is fixed on the top of suction type stake, and it is heavy that the other end is fixed on suction type
Box structure.
Further, the height of the suction type stake and suction caisson structure is equal.
Further, the suction caisson structure, including the columnar structured of multiple open at both ends；Each cylindrical shape
The top of structure is equipped with the mounting groove of indent, and the mounting groove is used to cooperate with circular steel plate；Multiple tubular constructions are spelled up and down
It is connected together, with a unification circular steel plate at the top of the tubular construction of top；Wirerope is equipped at the top of circular steel plate to connect
Socket part.
Further, it is gradually reduced from inside to outside positioned at the columnar structured sidewall bottom thickness of the bottom, forms point
Sharp bottom, facilitates grafting.
Further, in addition to the bottom it is columnar structured other than, other columnar structured bottoms be equipped with and lower layer's tubular
The protrusion of structural top mounting groove cooperation.
Further, the draw ratio of suction caisson structure is 1:2, thickness 0.2m；
Further, the draw ratio of the suction type stake is 3:1.
Further, the distance at the center of the suction type stake to suction caisson center is the 2 of suction type stake diameter
~3 times.
Specific installation method is as follows:
Firstly, circular steel plate is fixed at the top of drum by stripped thread rotation at the top of first segment drum, one is become
Suction caisson structure, i.e. first segment suction caisson structure；
Secondly, performing pressure difference inside and outside staving, first segment suction caisson structure is installed；
Again, after the installation is completed, circular steel plate is separated with first segment drum structure for first segment suction caisson structure；Again
It is secondary, circular steel plate is connected with the second pitch circle barrel structure, forms the second section suction caisson structure, the same manner is sunk to pacifying
Dress is in place, and so on the caisson foundation structure of other joint numbers is installed, until reaching design requirement；
Finally, after suction caisson structure is installed, using suction caisson structure as the center of circle, in the circle of setting radius
Multiple suction type stakes are averagely laid on arc, are connected between suction caisson structure and suction type stake with wirerope；If the ocean
Liquefaction intensity in region is high, can lay a circle suction type stake again, and so on.
The working principle of the utility model are as follows:
Suction caisson structure is connected with suction type stake by wirerope, enduringly improves suction caisson structure foundation
Stability efficiently reduces suction caisson structure in the deformation of liquefaction stratum or soft stratum；And original suction type is sunk
Box structure is flexible and extendable outward, can effectively adapt to the unfavorable geological conditions such as weak sea bed, has controllability.At the same time,
Suction caisson and suction type pile foundation are as marine petroleum exploitation platform Deep Foundation Structure, and construction technology is mature, convenience is fast
It is prompt.
The utility model has the following beneficial effects:
1. the device is that suction caisson foundation is connected with suction type stake by wirerope, it is heavy enduringly to improve suction type
Box structure foundation stability efficiently reduces suction caisson structure in the deformation of liquefaction stratum or soft stratum；And it will be former
There is suction caisson structure flexible and extendable outward, can effectively adapt to the unfavorable geological conditions such as weak sea bed, there is controllability.
2. being connected by circular steel plate with more piece drum structure, the small-sized caisson foundation structure of more piece is become, inside and outside
Sink to installing section by section under differential pressure action.This mode can effectively reduce the unevenness of drum structure sediment caused by uneven strata
With the problems such as there are air inside staving, caisset foundation stability is enduringly improved, efficiently reduces caisset soft
The buckling deformation on weak stratum；Also, reduce original caisset length (this refers to during transportation, the caisson of single-unit
Structure length is reduced relative to original monolithic construction length), certain flexibility is made it have, weak sea can be effectively adapted to
The unfavorable geological conditions such as bed have controllability.
3. in terms of suction type combination foundation structural stability: the applicable model of suction caisson structure can be effectively improved
It encloses, reduces foundation instability of the suction caisson structure in liquefaction stratum and destroy, enduringly improve its self-stability energy, guarantee thereon
Personnel safety and equipment operation during the construction of portion's offshore platform structure and operation.
4. in terms of severe geological conditions adaptability: breaking original suction caisson structural flexibility deformation bad adaptability etc. no
Foot, makes it have certain flexibility, can effectively adapt to the unfavorable geological conditions such as weak sea bed, has controllability.
5. construction aspect: suction caisson structure and suction type pile foundation are as marine petroleum exploitation platform deep foundation knot
Structure, construction technology are mature, convenient and efficient.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1, Fig. 2 be the utility model in suction caisson structure in circular steel plate schematic diagram.
Fig. 3 is the skiagraph of first segment drum structure in suction caisson structure in the utility model.
Fig. 4 is the skiagraph of other pitch circle barrel structures in suction caisson structure in the utility model.
Fig. 5 is the schematic diagram that suction caisson foundation structure is completed in the utility model.
Fig. 6 is the suction type pile foundation schematic diagram of the utility model suction caisson structure.
Fig. 7 is the top view that the utility model suction type combination foundation structure construction is completed.
Fig. 8 is the schematic diagram that the utility model suction type combination foundation structure construction is completed.
Wherein, unit: m；1, circular steel plate；2, first segment drum structure；3, the drum structure of other sections；4, suction type is heavy
Box structure；5, suction type pile foundation；6, wirerope, 7 wirerope interconnecting pieces, 8 wirerope interconnecting pieces.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
As background technique is introduced, traditional suction caisson foundation structure cannot be guaranteed on the liquefied foundation of deep-sea
The stability of ocean platform, this just constrains the development and application of suction caisson structure.For this purpose, by traditional suction caisson knot
Structure and suction type pilework form a kind of novel suction caisson foundation structure, with meeting liquescent soft stratum or deep-sea
The construction and stabilization of area's submerged structure.
In a kind of typical embodiment of the application, as shown in Figure 1 and Figure 2, a kind of typical embodiment of the application
In, circular steel plate is having a size of diameter 9.9m, height 0.2m as shown in Figure 1:；Wirerope interconnecting piece 7 is equipped at the top of it；
As shown in Fig. 2, the drum of assembled ocean suction caisson foundation structure first segment is having a size of diameter 10m, height
3m, thickness 0.2m；Its sidewall bottom thickness gradually reduces from inside to outside, forms sharp bottom, is conveniently inserted into heavy sea of faces's bed
In；Its top is equipped with the mounting groove of indent, and the mounting groove is used to cooperate with circular steel plate.
As shown in figure 3, the drum of the other sections of assembled ocean suction caisson foundation structure is having a size of diameter 10m, height
3m, thickness 0.2m；Bottom is equipped with the protrusion with mounting groove cooperation at the top of lower layer's tubular construction；Its top is equipped with the installation of indent
Slot, the mounting groove are used to cooperate with circular steel plate.
As shown in figure 4, in sequence, respectively connecting every pitch circle barrel structure with circular steel plate, it incite somebody to action this using inside and outside differential pressure
In pitch circle barrel structure sinking sea of faces bed, circular steel plate is sling, next pitch circle barrel structure is installed, with this more piece drum structure of sinking,
To make a combination thereof be assembled into a complete suction caisson foundation structure.
Specifically, assembled ocean suction caisson foundation construction method is as follows:
As shown in figure 3, suction type pile foundation is diameter 3m, the drum steel knot of the top closed and bottom opening of length 10m
Structure, the stiffener plate that steel construction uses with a thickness of 0.03m.
As shown in Figure 7, Figure 8, suction caisson foundation is connected by wirerope with suction type stake, keeps its composition whole
Body foundation structure, the distance between suction caisson foundation and suction type pile foundation are 3m.By wirerope by suction caisson
Basis is connected with suction type stake, enduringly improves suction caisson structure foundation stability, efficiently reduces suction caisson knot
Deformation of the structure in liquefaction stratum or soft stratum；And original suction caisson structure is flexible and extendable outward, it can effectively fit
The unfavorable geological conditions such as weak sea bed are answered, there is controllability.At the same time, suction caisson and suction type pile foundation are as sea
Foreign oil exploitation platform Deep Foundation Structure, construction technology are mature, convenient and efficient.
Novel suction caisson foundation construction method is as follows:
(1) circular steel plate and drum structure fabrication
Diameter is 10m, is highly 3m, and the drum structure of thickness 0.2m is several；Diameter is 9.9m, is highly the circle of 0.2m
Steel plate, can be prefabricated in precast plant.
(2) first segment drum structure is installed
First segment drum structure is connect with circular steel plate, using inside and outside differential pressure by this section drum structure sinking sea of faces bed
It is interior, sling circular steel plate.
The installation of (3) second pitch circle barrel structures
Second pitch circle barrel structure is connected with first segment drum structural top, then by the second pitch circle barrel structure and circular steel plate
Connection slings circular steel plate using inside and outside differential pressure by this section drum structure sinking sea of faces's bed.Other each pitch circle barrel structure installations
Method is identical.To which composite assembly is at a complete suction caisson foundation structure.
(4) suction type pile foundation is installed
Suction type pile foundation is diameter 3m, the drum steel construction of high 10m, the reinforcement steel that steel construction uses with a thickness of 0.03m
Gusset.Construction method is identical as marine petroleum exploitation platform suction type foundation mounting means.
(5) wirerope is connected
Suction caisson structure is connected with suction type stake by wirerope, makes its foundation structure that forms a whole, is inhaled
The distance between power formula caisson foundation and suction type pile foundation are 3m.
Specific connection type is: a wirerope being arranged in the circular steel plate of the top of suction caisson structure and connects
Socket part 7, also is provided with a wirerope interconnecting piece 8 at the top of each suction type stake, and wirerope sequentially passes through first suction type
The wirerope interconnecting piece in stake top portion and the wirerope interconnecting piece of suction caisson structural top and with the first suction type stake
On the wirerope interconnecting piece of second suction type stake on same diameter line；The both ends of wirerope be separately fixed at two it is right
On the wirerope interconnecting piece for answering the suction type stake of position；The connection type of other suction type stakes refers to this method, is finally completed solid
It is fixed, it can specifically refer to Fig. 7 and Fig. 8；
The device is that suction caisson foundation is connected with suction type stake by wirerope, enduringly improves suction caisson
Structure foundation stability efficiently reduces suction caisson structure in the deformation of liquefaction stratum or soft stratum；And it will be original
Suction caisson structure is flexible and extendable outward, can effectively adapt to the unfavorable geological conditions such as weak sea bed, has controllability.
In terms of suction caisson structural stability: the scope of application of suction caisson structure can be effectively improved, reduced
Foundation instability of the suction caisson structure in liquefaction stratum destroys, enduringly improves its self-stability energy, guarantees upper part ocean
Personnel safety and equipment operation during platform structure construction and operation.
In terms of severe geological conditions adaptability: the deficiencies of breaking original suction caisson structural flexibility deformation bad adaptability,
Certain flexibility is made it have, the unfavorable geological conditions such as weak sea bed can be effectively adapted to, there is controllability.
Construction aspect: suction caisson and suction type pile foundation are applied as marine petroleum exploitation platform Deep Foundation Structure
It is work technical maturity, convenient and efficient.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (8)
1. a kind of suction type combination foundation structure suitable for stratum of easily liquefying, which is characterized in that including a suction caisson
Structure is equipped at least one circle suction type stake in the outer ring of suction caisson structure centered on the axis of suction caisson structure,
Every circle suction type stake includes multiple suction type stakes, and multiple suction type stakes are uniformly distributed along the outer ring of suction caisson structure；Suction
It is connected between formula caisset and suction type stake with attachment device.
2. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that institute
The suction type stake stated is the hollow pilework top closed, bottom is open；Wirerope interconnecting piece is equipped at the top of circular steel plate.
3. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that institute
The attachment device stated uses wirerope, and the material of wirerope selects carbon steel.
4. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as claimed in claim 3, which is characterized in that institute
The one end for the wirerope stated is fixed on the top of suction type stake, and the other end is fixed on suction caisson structure.
5. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that institute
The height of the suction type stake and suction caisson structure stated is equal.
6. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that institute
The suction caisson structure stated, including the columnar structured of multiple open at both ends；Each columnar structured top is equipped with indent
Mounting groove, the mounting groove be used for and circular steel plate cooperate；Multiple tubular constructions are stitched together up and down, are located at top
Tubular construction at the top of with unifying circular steel plate；Wirerope interconnecting piece is equipped at the top of circular steel plate.
7. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that position
It is gradually reduced from inside to outside in the columnar structured sidewall bottom thickness of the bottom, forms sharp bottom, facilitate grafting.
8. a kind of suction type combination foundation structure suitable for stratum of easily liquefying as described in claim 1, which is characterized in that remove
The bottom it is columnar structured outer, other columnar structured bottoms be equipped with and lower layer's tubular construction at the top of mounting groove cooperation
Protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198558.5U CN208685648U (en) | 2018-07-26 | 2018-07-26 | A kind of suction type combination foundation structure suitable for stratum of easily liquefying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821198558.5U CN208685648U (en) | 2018-07-26 | 2018-07-26 | A kind of suction type combination foundation structure suitable for stratum of easily liquefying |
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| CN208685648U true CN208685648U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821198558.5U Active CN208685648U (en) | 2018-07-26 | 2018-07-26 | A kind of suction type combination foundation structure suitable for stratum of easily liquefying |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677991A (en) * | 2018-07-26 | 2018-10-19 | 山东大学 | A kind of suction type combination foundation structure and construction method being suitable for easily liquefaction stratum |
| CN110172998A (en) * | 2019-05-29 | 2019-08-27 | 浙江大学 | A kind of combined type suction anchor reinforced using slip casting Screw Anchor |
-
2018
- 2018-07-26 CN CN201821198558.5U patent/CN208685648U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677991A (en) * | 2018-07-26 | 2018-10-19 | 山东大学 | A kind of suction type combination foundation structure and construction method being suitable for easily liquefaction stratum |
| CN108677991B (en) * | 2018-07-26 | 2023-09-26 | 山东大学 | Suction type combined foundation structure suitable for stratum easy to liquefy and construction method |
| CN110172998A (en) * | 2019-05-29 | 2019-08-27 | 浙江大学 | A kind of combined type suction anchor reinforced using slip casting Screw Anchor |
| US11773561B2 (en) | 2019-05-29 | 2023-10-03 | Zhejiang University | Combined suction anchor reinforced by grouting spiral anchor |
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