CN219343112U - Foundation skirt pile sleeve and jacket platform for offshore booster station - Google Patents
Foundation skirt pile sleeve and jacket platform for offshore booster station Download PDFInfo
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- CN219343112U CN219343112U CN202320137089.0U CN202320137089U CN219343112U CN 219343112 U CN219343112 U CN 219343112U CN 202320137089 U CN202320137089 U CN 202320137089U CN 219343112 U CN219343112 U CN 219343112U
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- jacket
- booster station
- pile sleeve
- offshore booster
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
The utility model provides a foundation skirt pile sleeve and a jacket platform for a marine booster station, which are characterized by comprising a single pile sleeve connected with a jacket main leg, wherein the pile sleeve is connected with the jacket main leg through a box beam and a shear plate, the box beam comprises an upper box beam and a lower box beam, the shear plate is positioned between the upper box beam and the lower box beam, the upper side and the lower side of the shear plate are respectively and fixedly connected with the upper box beam and the lower box beam, and the left side and the right side of the shear plate are respectively and fixedly connected with the jacket main leg and the pile sleeve.
Description
Technical Field
The utility model belongs to the technical field of offshore wind power, and particularly relates to a foundation skirt pile sleeve and a jacket platform for an offshore booster station.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The inventor finds that compared with the more mature land wind power, the offshore wind power presses a fast forward key in recent years, the offshore wind power development still belongs to an emerging industry, the design of a pile group sleeve of an offshore booster station is not mature, a standard system which is not mature at present can be referred to, the related standard of the sea oil industry is mainly referred to at present, a jacket of the sea oil industry basically adopts a traditional pile group sleeve structure type (multi-sleeve) in a deep water area, the skirt pile sleeve (traditional) mainly comprises a main leg, a plurality of sleeves, a shearing plate for connecting the sleeves and the main leg and an upper and lower yoke plate, the structure type is complex, the engineering quantity is large, the manufacturing cost is high, the welding requirement is high, the construction process is complex, the stress concentration is easy, and the fatigue life of the structure is influenced.
Disclosure of Invention
The utility model aims to solve the problems, and provides a foundation skirt pile sleeve and a jacket platform for an offshore booster station.
According to the embodiment of the utility model, a foundation skirt pile sleeve for a marine booster station is provided, the foundation skirt pile sleeve comprises a single pile sleeve connected with a jacket main leg, the pile sleeve is connected with the jacket main leg through a box beam and a shear plate, the box beam comprises an upper box beam and a lower box beam, the shear plate is positioned between the upper box beam and the lower box beam, the upper side and the lower side of the shear plate are respectively fixedly connected with the upper box beam and the lower box beam, and the left side and the right side of the shear plate are respectively fixedly connected with the jacket main leg and the pile sleeve.
Further, the box beam comprises an upper horizontal steel plate and a lower horizontal steel plate, and the upper horizontal steel plate and the lower horizontal steel plate are fixedly connected through two vertical steel plates.
Further, one end of the box beam is fixedly connected with the jacket main leg, and the other end of the box beam is fixedly connected with the pile sleeve.
Furthermore, the two ends of the flange plates of the upper box beam and the lower box beam extend outwards and respectively encircle the outer surfaces of the jacket main leg and the pile sleeve for one circle and are fixedly connected.
According to an embodiment of the utility model, a jacket platform for an offshore booster station is provided, comprising a jacket, the main legs of which are fixed with a foundation skirt pile sleeve for an offshore booster station as described above.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a foundation skirt pile sleeve and a jacket platform for a marine booster station, wherein the scheme is that only one pile sleeve is arranged, and the connection of a jacket main leg and the pile sleeve adopts the welding of upper and lower box-shaped beams and middle shear plates, so that the structure is ensured to be stressed more safely and reliably.
Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is an elevation view of a foundation skirt pile sleeve structure for an offshore booster station according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a foundation skirt sleeve structure D-D for an offshore booster station according to an embodiment of the utility model;
FIG. 3 is a cross-sectional view of a foundation skirt sleeve structure B-B (F-F) for an offshore booster station according to an embodiment of the present utility model;
1, a jacket main leg; 2. a pile sleeve; 3. an upper box beam; 4. a lower box beam; 5. a shear plate; 6. a jacket lower horizontal support; 7. jacket diagonal bracing.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Term interpretation:
the offshore booster station is an offshore facility for collecting, boosting and sending out electric energy generated by each wind turbine generator set of the offshore wind farm, is an electric energy collection center of the offshore wind farm, is a heart of the whole wind farm project, is a key facility for power transmission and transformation, and is also a key for success and failure of the whole offshore wind farm.
Skirt pile sleeve structure: the jacket and the pile are connected through a pile sleeve at the mud surface, the pile is driven into the seabed through a sleeve arranged outside the leg column, the jacket bears the upper block load, the accessory component and the environmental load, and the load is transmitted into the seabed through the pile.
Embodiment one:
the aim of this embodiment is to provide a foundation skirt pile sleeve for an offshore booster station.
The jacket structure of the traditional skirt pile sleeve structure is characterized in that each jacket main leg is connected with more than 2 pile sleeves, a plurality of upper and lower yoke plates and shear plates are usually required to be arranged for the pile sleeves to ensure the force transmission safety and reliability of the whole structure, so that the jacket main legs are connected with the pile sleeves, and the structure type is very complex; the fatigue life calculation of skirt pile sleeves is also the important consideration of ocean engineering, and for the structure with complex structural style, the requirements on structural welding and polishing are very high, and when the welding can not meet the corresponding requirements, fatigue damage is easy to occur.
In order to solve the problems existing in the prior art, the embodiment provides a foundation skirt pile sleeve for a marine booster station, which comprises a single pile sleeve connected with a jacket main leg, wherein the pile sleeve is connected with the jacket main leg through a box beam and a shear plate, the box beam comprises an upper box beam and a lower box beam, the shear plate is positioned between the upper box beam and the lower box beam, the upper side and the lower side of the shear plate are respectively fixedly connected with the upper box beam and the lower box beam, and the left side and the right side of the shear plate are respectively fixedly connected with the jacket main leg and the pile sleeve.
Further, the box beam comprises an upper horizontal steel plate and a lower horizontal steel plate, and the upper horizontal steel plate and the lower horizontal steel plate are fixedly connected through two vertical steel plates.
Further, one end of the box beam is fixedly connected with the jacket main leg, and the other end of the box beam is fixedly connected with the pile sleeve.
Furthermore, the two ends of the flange plates of the upper box beam and the lower box beam extend outwards and respectively encircle the outer surfaces of the jacket main leg and the pile sleeve for one circle and are fixedly connected.
Further, the minimum center-to-center distance between the jacket main leg and the pile sleeve is 3.5m.
Further, the fixing mode adopts welding.
Further, the lower box beam is arranged at the lower horizontal support position of the jacket.
Furthermore, the box girder is formed by adopting a steel structure yoke plate, and the shear plate is designed by adopting a steel structure.
Furthermore, the jacket main leg and the pile sleeve are of round steel pipe structures.
In particular, for easy understanding, the following detailed description of the embodiments will be given with reference to the accompanying drawings:
as shown in fig. 1 to 2, the foundation skirt pile sleeve for an offshore booster station provided in this embodiment specifically includes: each jacket main leg 1 is connected with one pile sleeve 2, the jacket main legs 1 and the pile sleeves 2 are of round steel pipe structures, the jacket main legs 1 and the pile sleeves 2 are welded with an upper box beam 3 (formed by a steel structure yoke plate), a shear plate 5 (formed by a steel structure yoke plate) and a lower box beam 4 (formed by a steel structure yoke plate), the upper box beam and the lower box beam are welded with an intermediate shear plate to form a whole reliable force transmission system, the lower box beam 4 is arranged near a jacket lower horizontal support 6, and the minimum center distance between the jacket main legs and the pile sleeves is about 3.5m.
Further, each box girder is formed by welding an upper horizontal steel plate, a lower horizontal steel plate and two vertical steel plates, and the flange plates of the upper box girder and the lower box girder extend outwards and encircle the jacket main leg and the outer surface of the pile sleeve for one circle and are welded.
Further, in order to prove the effectiveness of the scheme in this embodiment, the corresponding test verification is performed in this embodiment:
depending on the existing offshore wind power project engineering, the skirt pile sleeve structure is modeled and calculated in sacs (offshore structure design analysis software) according to the following two types according to the upper assembly block of the offshore booster station and the jacket scheme, and the two structural type engineering quantities and the influence on the manufacturing cost of the whole structural engineering quantity are calculated.
Structural form 1: a jacket structure (two sleeves) with a traditional skirt pile sleeve structure is characterized in that two small piles are arranged on the outer side of each main leg, two pile group sleeves are correspondingly arranged, and the jacket main legs and the two pile group sleeves are welded and connected through a plurality of upper and lower yoke plates and shear plates.
Structural form 2: the jacket structure (single sleeve) with the skirt pile sleeve structure is provided, wherein a large pile is arranged on the outer side of each main leg, a pile group sleeve is correspondingly arranged on each pile group sleeve, the jacket main legs are connected with the pile sleeves through upper and lower box beams, and the middle of the jacket main legs are welded through shear plates.
The two structural types are modeled and analyzed by sacs calculation software, and under the condition that the overall structure meets the requirements of strength, fatigue and the like, the calculation results are shown in the following table 1:
TABLE 1 engineering quantity comparison Table
From the analysis of table 1, it can be seen that: the two skirt pile sleeve structure types have no influence on the engineering quantity of the jacket and the upper assembly, but the novel skirt pile jacket structure can reduce the engineering quantity of piles and the engineering quantity of pile sleeves, the total steel consumption is saved by about 150t, the manufacturing cost is saved by about 170 ten thousand, and the skirt pile sleeve structure type is simple, safe and reliable, convenient to weld and easy to construct.
Further, the present embodiment also performs a comparative analysis on the local structural scheme of the pile group sleeve (single sleeve) proposed in the present embodiment:
structural style (1): the piles and the sleeves are welded with the shear plates by adopting upper and lower box-shaped beams;
structural style (2): the piles and the sleeves are welded and connected with the shear plates by adopting single-layer yoke plates.
Because of inaccurate simulation of sacs software aiming at the pile sleeve connecting area, a local model is extracted, and an ansys finite element analysis is adopted to analyze and verify whether the two connecting structure types meet the structural strength and fatigue safety requirements.
And through finite element analysis and strength analysis and comparison, the maximum effective stress 249N/mm < 2 > of the skirt pile sleeve structure of the box beam structure is positioned at the lowest side of the shear plate. For the biggest effective stress of a single-layer yoke plate skirt pile sleeve structure is 327N/mm < 2 >, under the same upper structure load effect, the stress of the structural type (1) is smaller, and the structural type (2) needs to thicken the shear plate so as to meet the strength requirement. Through fatigue analysis and calculation, the fatigue life of the structural type (1) is 65 years, the fatigue life of the structural type (2) is 45 years, the requirement of 50 years is not met, and the requirement can be met by thickening the steel plate and polishing the local weld joint. Under the condition of meeting the strength and fatigue requirements, the steel consumption of the structural type (1) is 40t less than that of the structural type (2).
In conclusion, compared with the structural type (2), the structural type (1) adopts the box type Liang Xingshi, has high bending rigidity and torsional rigidity, can effectively resist environmental loads in all directions, has smaller maximum stress, small steel consumption, long fatigue life and safer and more reliable structural stress.
Through the analysis, it can be found that the skirt pile sleeve structure provided by the embodiment is only provided with one sleeve, the jacket main leg is connected with the pile sleeve by adopting the upper box beam, the lower box beam and the middle shear plate for welding, the structure stress is ensured to be safer and more reliable, the structure connection type is simple, the welding points are fewer, the welding is convenient, and the fatigue safety requirement is more easily met. The finite element analysis is carried out on the pile sleeves of the upper and lower box type Liang Zhuang sleeves and the single-layer yoke plates, the pile sleeves of the upper and lower box type girder yoke plates are high in rigidity, smaller in maximum stress, small in steel consumption, long in fatigue life and safer and more reliable in structure. Meanwhile, as can be seen from table 1, the skirt pile sleeve type proposed in this embodiment greatly reduces the steel consumption (150 t) for construction, and has a considerable cost and benefit.
Embodiment two:
it is an object of this embodiment to provide a jacket platform for an offshore booster station.
As shown in fig. 3, a jacket platform for an offshore booster station includes a jacket, the main legs of which are fixed using a foundation skirt sleeve as described above for the offshore booster station.
The foundation skirt pile sleeve and the jacket platform for the offshore booster station can be realized, and the foundation skirt pile sleeve and the jacket platform have wide application prospects.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a foundation skirt stake sleeve for marine booster station, its characterized in that includes the single stake sleeve of being connected with the jacket owner leg, the stake sleeve with connect through box roof beam and shear force board between the jacket owner leg, the box roof beam includes box roof beam and lower box roof beam, the shear force board is located between box roof beam and the lower box roof beam, the upper and lower both sides of shear force board respectively with box roof beam and lower box roof beam fixed connection, the left and right sides of shear force board respectively with jacket owner leg and stake sleeve fixed connection.
2. A foundation skirt pile sleeve for an offshore booster station according to claim 1, wherein the box girder comprises an upper horizontal steel plate and a lower horizontal steel plate, and the upper horizontal steel plate and the lower horizontal steel plate are fixedly connected through two vertical steel plates.
3. A foundation skirt pile sleeve for an offshore booster station as defined in claim 1 wherein said box girder is fixedly connected at one end to said jacket main leg and at the other end to said pile sleeve.
4. A foundation skirt pile sleeve for an offshore booster station as defined in claim 1, wherein the flange plates of said upper and lower box girders are outwardly extended at both ends and fixedly connected around the outer surfaces of said jacket main leg and pile sleeve, respectively.
5. A foundation skirt pile sleeve for an offshore booster station according to claim 1 wherein the minimum centre-to-centre distance between the jacket main legs and the pile sleeve is 3.5m.
6. A foundation skirt sleeve for an offshore booster station according to any one of claims 1-5, wherein said securing means is by welding.
7. A foundation skirt pile sleeve for an offshore booster station according to claim 1, wherein said lower box girder is disposed in a lower horizontal bracing position of a jacket.
8. A foundation skirt pile sleeve for an offshore booster station according to claim 1, wherein said box girder is constructed of steel structural yoke plates and said shear plates are of steel structural design.
9. A foundation skirt pile sleeve for an offshore booster station as defined in claim 1 wherein said jacket main leg and pile sleeve are of circular steel tube construction.
10. A jacket platform for an offshore booster station comprising a jacket, wherein the main legs of the jacket are secured with a foundation skirt sleeve for an offshore booster station as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320137089.0U CN219343112U (en) | 2023-01-17 | 2023-01-17 | Foundation skirt pile sleeve and jacket platform for offshore booster station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320137089.0U CN219343112U (en) | 2023-01-17 | 2023-01-17 | Foundation skirt pile sleeve and jacket platform for offshore booster station |
Publications (1)
| Publication Number | Publication Date |
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| CN219343112U true CN219343112U (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320137089.0U Active CN219343112U (en) | 2023-01-17 | 2023-01-17 | Foundation skirt pile sleeve and jacket platform for offshore booster station |
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| Country | Link |
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| CN (1) | CN219343112U (en) |
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- 2023-01-17 CN CN202320137089.0U patent/CN219343112U/en active Active
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