CN105804111A - Unequal-length-leg offshore wind power jacket foundation and construction method thereof - Google Patents
Unequal-length-leg offshore wind power jacket foundation and construction method thereof Download PDFInfo
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- CN105804111A CN105804111A CN201610354540.9A CN201610354540A CN105804111A CN 105804111 A CN105804111 A CN 105804111A CN 201610354540 A CN201610354540 A CN 201610354540A CN 105804111 A CN105804111 A CN 105804111A
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- lower limb
- catheterostat
- main pipe
- offshore wind
- pipe lower
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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Abstract
The invention relates to an unequal-length-leg offshore wind power jacket foundation and a construction method thereof. The unequal-length-leg offshore wind power jacket foundation comprises at least three unequal-length main guide pipe legs; the main guide pipe legs are distributed in a polygon mode; the height differences among the main guide pipe legs are consistent with pile head elevation differences among corresponding pile foundations; and every two adjacent main guide pipe legs are connected into an integral latticed jacket foundation through inclined struts. The unequal-length-leg offshore wind power jacket foundation consists of the two parts of the inclined struts and the unequal-length legs, so that the unequal-length-leg offshore wind power jacket foundation has the advantages that materials are saved; construction is convenient; the unequal-length-leg offshore wind power jacket foundation is applicable to the environment; and the like. The unequal length structure is adopted by the jacket main legs, so that when geological condition changes are large, and thus driving depths of piles are not consistent, pile cutting work and the like can be omitted; construction is convenient; and meanwhile, material waste can be reduced. Furthermore, due to the unequal-length guide pipe structure, foundation construction cost and the weight of a jacket can be lowered; and obvious social benefit and economic benefit are provided.
Description
Technical field
The present invention relates to a kind of offshore wind plant wind turbine foundation, particularly relate to a kind of Length discrepancy lower limb offshore wind farm catheterostat basis and construction method thereof.
Background technology
Marine wind electric field jacket wind turbine foundation comes from offshore oil platform jacket structure form, general in the majority with 4 pile leader frame forms in external wind energy turbine set.Catheterostat basis adopts the quadrilateral space prism structure that steel pipe is interconnected to form, and 4 main pipe ends of base structure divide into sleeve, and sleeve is connected with pile foundation, truss-like can be adopted to connect and shear plate connects.Catheterostat basis integral rigidity is big, and the effect being subject to the environmental load such as wave and current is smaller, it is adaptable to the marine site that the depth of water is bigger.
Traditional offshore wind farm catheterostat basis is generally adopted isometric main pipe form, when it is applied in sea bottom complex geological conditions, owing to main pipe bottom space is relatively large, consider the requirement of the aspects such as construction, stake driving depth is often different, cause that height of pile top differs, it is necessary to carry out cutting the work such as stake.Cut a difficulty under water big, and strengthen construction period and expense, cause potential safety hazard to catheterostat basis simultaneously.
Summary of the invention
In view of the deficiencies in the prior art, the technical problem to be solved is to provide that a kind of modern design, simple in construction, saving material, environmental suitability be strong, easy construction, expense are low and safe and reliable Length discrepancy lower limb offshore wind farm catheterostat basis and construction method thereof.
In order to solve the problems referred to above, technical scheme one is: a kind of Length discrepancy lower limb offshore wind farm catheterostat basis suitable in sea bottom complex geological conditions, including the main pipe lower limb that at least three is different in size, polygon distribution is adopted between described main pipe lower limb, difference in height between each main pipe lower limb is poor consistent with the height of pile top between the corresponding pile foundation in seabed, is connected into the lattice catheterostat basis of entirety between two main pipe lower limbs of arbitrary neighborhood by diagonal brace.
Preferably, described diagonal brace is X-type diagonal brace, K type diagonal brace or the combination of the two.
Preferably, described main pipe lower limb is to continue downwards to extend along the gradient that catheterostat is basic.
Preferably, the angle of described main pipe lower limb and horizontal plane is less than the angle of catheterostat side of the base plate Yu horizontal plane.
In order to solve the problems referred to above, technical scheme two is: the construction method on a kind of Length discrepancy lower limb offshore wind farm catheterostat basis, comprises the following steps:
(1) precalculated position under sea bottom complex geological conditions, squeezes into the pile foundation that at least three is polygon distribution, measures the height of pile top obtained between each pile foundation poor；
(2) poor according to the height of pile top between each pile foundation, select equal number but main pipe lower limb different in size, the difference in height between each main pipe lower limb and the height of pile top between corresponding pile foundation are poor consistent；
(3) in factory, between each main pipe lower limb, adopt polygon distribution, between two main pipe lower limbs of arbitrary neighborhood, connected into the lattice catheterostat basis of entirety by diagonal brace；
(4) catheterostat basis is transported and lift to precalculated position, connect corresponding for less with height of pile top for longer main pipe lower limb lower end pile foundation, by corresponding for bigger with height of pile top for shorter main pipe lower limb lower end pile foundation connection.
Compared with prior art, the method have the advantages that owing to catheterostat have employed unequal leg structure, when being applied to Sea Bottom with Complicated Geological Conditions and causing driven pile elevation difference, it is effectively reduced the workload cutting stake or other equivalent process, it is greatly shortened the construction period, convenient construction, reduces waste of material simultaneously.Additionally, Length discrepancy lower limb structure can reduce foundation cost and the weight of catheterostat itself, there is obvious social benefit and economic benefit.Simultaneously for coastal waters sea bed shallow overburden, in order to meet foundation bearing capacity, pile foundation generally requires embedding rock, and relative to the many pile foundations of conventional pilot pipe support, Length discrepancy lower limb offshore wind farm catheterostat basis also can reduce difficulty of construction and quantities.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the embodiment of the present invention one.
Fig. 2 is the schematic top plan view of the embodiment of the present invention one.
Fig. 3 is the schematic front view of the embodiment of the present invention two.
Fig. 4 is the schematic top plan view of the embodiment of the present invention two.
Labelling in figure: 100,101,102,103,104-main pipe lower limb, 200-diagonal brace, 300-pile foundation, SL-sea level, SD-seabed supporting course.
Detailed description of the invention
In order to allow the features described above of the present invention and advantage become apparent, special embodiment below, and coordinate accompanying drawing, it is described in detail below.
As shown in Fig. 1 ~ 4, a kind of Length discrepancy lower limb offshore wind farm catheterostat basis suitable in sea bottom complex geological conditions, including the main pipe lower limb 100 that at least three is different in size, polygon distribution is adopted between described main pipe lower limb 100, difference in height between each main pipe lower limb 100 is poor consistent with the height of pile top between the corresponding pile foundation in seabed 300, is connected into the lattice catheterostat basis of entirety between two main pipe lower limbs 100 of arbitrary neighborhood by diagonal brace 200.
Wherein, top, described catheterostat basis is used for connecting fan tower, and bottom is for connecting the different pile foundation of height of pile top 300.
Wherein, described main pipe lower limb 100 is at the setting angle of catheterostat foundation bottom or for continuing downwards to extend along the gradient on catheterostat basis, or is the angle less than catheterostat side of the base plate Yu horizontal plane of the angle with horizontal plane.
Embodiment one:As shown in Figure 1 and 2, this catheterostat basis includes three main pipe lower limbs 101,102,103 different in size, Triangle-Profile is adopted between three main pipe lower limbs 101,102,103, the angle of described main pipe lower limb 101,102,103 and horizontal plane is less than the angle of catheterostat side of the base plate Yu horizontal plane, and described diagonal brace 200 is X-type diagonal brace.
Embodiment two:As shown in Fig. 3 ~ 4, this catheterostat basis includes four main pipe lower limbs 101,102,103,104 different in size, tetragon distribution is adopted between four main pipe lower limbs 101,102,103,104, the angle of described main pipe lower limb 101,102,103,104 and horizontal plane is less than the angle of catheterostat side of the base plate Yu horizontal plane, and described diagonal brace 200 is X-type diagonal brace and the combination of K type diagonal brace.
The main pipe lower limb that offshore wind farm catheterostat basis instrument is different in size, the catheterostat changing long legs such as in the past directly utilizing is supported in stake, becomes original catheterostat being made up of Length discrepancy lower limb and corresponding diagonal brace two parts.When practical engineering application, Length discrepancy lower limb as run into Sea Bottom with Complicated Geological Conditions, during driven pile crest level difference, bottom available catheterostat, conduit quantity and length can arbitrarily be adjusted according to seabed driven pile crest level or other needs, select flexibly, reduce consumptive material.Body steel quantity consumption is not only saved on catheterostat basis after improvement, also can significantly reduce foundation construction workload, shortens the construction period, has obvious economic benefit.
As shown in Fig. 1 ~ 4, the construction method on a kind of Length discrepancy lower limb offshore wind farm catheterostat basis, comprise the following steps:
(1) precalculated position under sea bottom complex geological conditions, squeezes into the pile foundation 300 that at least three is polygon distribution, measures the height of pile top obtained between each pile foundation 300 poor；
(2) poor according to the height of pile top between each pile foundation 300, select equal number but main pipe lower limb 100 different in size, the difference in height between each main pipe lower limb 100 is poor consistent with the height of pile top between corresponding pile foundation 300；
(3) in factory, between each main pipe lower limb 100, adopt polygon distribution, between two main pipe lower limbs 100 of arbitrary neighborhood, connected into the lattice catheterostat basis of entirety by diagonal brace 200；
(4) catheterostat basis is transported and lift to precalculated position, connect corresponding for less with height of pile top for longer main pipe lower limb 100 lower end pile foundation 300, by corresponding for bigger with height of pile top for shorter main pipe lower limb 100 lower end pile foundation 300 connection.
In step (4), the connection of main pipe lower limb 100 and pile foundation 300 can adopt flange bolt to connect, and grouting is fixedly connected into one in main pipe lower limb 100 and pile foundation 300.
The above-mentioned not described part of each embodiment is all same as the prior art.The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of Length discrepancy lower limb offshore wind farm catheterostats basis and construction methods thereof under the enlightenment of the present invention.All equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of the present invention.
Claims (8)
1. the Length discrepancy lower limb offshore wind farm catheterostat basis being applicable to sea bottom complex geological conditions, it is characterized in that: include the main pipe lower limb that at least three is different in size, polygon distribution is adopted between described main pipe lower limb, difference in height between each main pipe lower limb is poor consistent with the height of pile top between the corresponding pile foundation in seabed, is connected into the lattice catheterostat basis of entirety between two main pipe lower limbs of arbitrary neighborhood by diagonal brace.
2. Length discrepancy lower limb offshore wind farm catheterostat according to claim 1 basis, it is characterised in that: described diagonal brace is X-type diagonal brace, K type diagonal brace or the combination of the two.
3. Length discrepancy lower limb offshore wind farm catheterostat according to claim 1 and 2 basis, it is characterised in that: described main pipe lower limb is to continue downwards to extend along the gradient that catheterostat is basic.
4. Length discrepancy lower limb offshore wind farm catheterostat according to claim 1 and 2 basis, it is characterised in that: the angle of described main pipe lower limb and horizontal plane is less than the angle of catheterostat side of the base plate Yu horizontal plane.
5. the construction method on a Length discrepancy lower limb offshore wind farm catheterostat basis, it is characterised in that comprise the following steps:
(1) precalculated position under sea bottom complex geological conditions, squeezes into the pile foundation that at least three is polygon distribution, measures the height of pile top obtained between each pile foundation poor；
(2) poor according to the height of pile top between each pile foundation, select equal number but main pipe lower limb different in size, the difference in height between each main pipe lower limb and the height of pile top between corresponding pile foundation are poor consistent；
(3) in factory, between each main pipe lower limb, adopt polygon distribution, between two main pipe lower limbs of arbitrary neighborhood, connected into the lattice catheterostat basis of entirety by diagonal brace；
(4) catheterostat basis is transported and lift to precalculated position, connect corresponding for less with height of pile top for longer main pipe lower limb lower end pile foundation, by corresponding for bigger with height of pile top for shorter main pipe lower limb lower end pile foundation connection.
6. the construction method on Length discrepancy lower limb offshore wind farm catheterostat according to claim 5 basis, it is characterised in that: described diagonal brace is X-type diagonal brace, K type diagonal brace or the combination of the two.
7. the construction method on the Length discrepancy lower limb offshore wind farm catheterostat basis according to claim 5 or 6, it is characterised in that: described main pipe lower limb is to continue downwards to extend along the gradient that catheterostat is basic.
8. the construction method on the Length discrepancy lower limb offshore wind farm catheterostat basis according to claim 5 or 6, it is characterised in that: the angle of described main pipe lower limb and horizontal plane is less than the angle of catheterostat side of the base plate Yu horizontal plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610354540.9A CN105804111B (en) | 2016-05-26 | 2016-05-26 | A kind of Length discrepancy leg offshore wind farm jacket basis and its construction method |
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| CN201610354540.9A CN105804111B (en) | 2016-05-26 | 2016-05-26 | A kind of Length discrepancy leg offshore wind farm jacket basis and its construction method |
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| CN105804111A true CN105804111A (en) | 2016-07-27 |
| CN105804111B CN105804111B (en) | 2018-09-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107326887A (en) * | 2017-06-22 | 2017-11-07 | 广东华尔辰海上风电工程有限责任公司 | Offshore wind farm elder generation pile leader frame construction method of installation |
| CN109653960A (en) * | 2018-12-25 | 2019-04-19 | 长江勘测规划设计研究有限责任公司 | A kind of wind energy and wave energy combined generating device based on jacket basis |
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| CN205776308U (en) * | 2016-05-26 | 2016-12-07 | 福建省新能海上风电研发中心有限公司 | A kind of Length discrepancy lower limb offshore wind farm catheterostat basis |
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2016
- 2016-05-26 CN CN201610354540.9A patent/CN105804111B/en active Active
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| WO2013167101A2 (en) * | 2012-05-10 | 2013-11-14 | Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung | Stand structure |
| CN103225311A (en) * | 2013-03-22 | 2013-07-31 | 广东明阳风电产业集团有限公司 | Fixing and leveling structure for mounting marine fan jacket foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107326887A (en) * | 2017-06-22 | 2017-11-07 | 广东华尔辰海上风电工程有限责任公司 | Offshore wind farm elder generation pile leader frame construction method of installation |
| CN107326887B (en) * | 2017-06-22 | 2019-06-18 | 广东华尔辰海上风电工程有限责任公司 | Offshore wind farm elder generation pile leader frame construction method of installation |
| CN109653960A (en) * | 2018-12-25 | 2019-04-19 | 长江勘测规划设计研究有限责任公司 | A kind of wind energy and wave energy combined generating device based on jacket basis |
| CN109653960B (en) * | 2018-12-25 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Wind energy and wave energy combined power generation device based on jacket foundation |
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| Publication number | Publication date |
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| CN105804111B (en) | 2018-09-04 |
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