CN104389318B - Reinforced concrete-steel structure hybrid gravity foundation for offshore wind power and construction method thereof - Google Patents
Reinforced concrete-steel structure hybrid gravity foundation for offshore wind power and construction method thereof Download PDFInfo
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- CN104389318B CN104389318B CN201410633320.0A CN201410633320A CN104389318B CN 104389318 B CN104389318 B CN 104389318B CN 201410633320 A CN201410633320 A CN 201410633320A CN 104389318 B CN104389318 B CN 104389318B
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- caisson
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
-
- 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
- E02D27/52—Submerged foundations, i.e. submerged in open water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a reinforced concrete-steel structure hybrid gravity foundation for offshore wind power. The reinforced concrete-steel structure hybrid gravity foundation comprises a caisson base and an upper steel support structure, wherein the caisson base has a gravity type reinforced concrete cavity structure; the steel support structure is fixed on the caisson base; the top end of the steel support structure is provided with a foundation ring which is connected with a fan tower; the caisson base and/or the steel support structure is provided with an irrigation channel which is communicated to the cavity of the caisson base. The invention further discloses a construction method of the reinforced concrete-steel structure hybrid type gravity foundation for offshore wind power. Compared with an ordinary jacket and single pile foundation, the reinforced concrete-steel structure hybrid gravity foundation has the advantages that the advantages of a reinforced concrete structure and a steel structure are combined organically; the reinforced concrete cavity structure is taken as a foundation base, and the steel structure is taken as an upper support structure; a pile foundation is not required; the foundation is made on the land, is assembled integrally, and can be transported by means of semi-submersible barge or the own buoyance. The reinforced concrete-steel structure hybrid gravity foundation is easy and convenient for construction, is shorter in the construction period, is economical, and has a wide application prospect in an offshore wind power project.
Description
Technical field
The invention belongs to the technical field of offshore wind power foundation engineering, and in particular to a kind of steel concrete for offshore wind farm-
Steel structure mixing gravity type foundation and its construction method.
Background technology
, because at sea constructing, big by effect of natural conditions, operating mode is more severe, can apply with scene for offshore wind power foundation engineering
The work activity duration is short, difficulty of construction big, efficiency bottom the features such as.
At present, catheterostat and single large diameter steel pipe pile are the conventional base_structure types of offshore wind farm.Catheterostat is steel
Truss structure, has the advantages that big rigidity, good stability, is relatively saved with material.But catheterostat is using pile foundation as supporting structure, pile foundation
Construction needs pile follower under water, and difficulty of construction is larger, high to equipment requirements；The construction technology of catheterostat is installed after using first pile sinking
When, it is extremely difficult that catheterostat installs under water para-position；If pile foundation needs embedding rock, not only difficulty of construction is big, long construction period, Er Qiegong
Journey expense is also quite high.
The version of single large diameter steel pipe pile is simple, and speed of application is fast, and aquatic work amount is little.But single pile structure section
Greatly, wall thickness is big, and from great, rolled steel dosage is big, lifting, pile driving equipment is required higher, and operating expenses is higher；Additionally, single pile knot
Structure is not appropriate at present in the area for needing the embedding rock construction of pile foundation, because Big-Diameter Rock-Embedded Pile difficulty of construction is big, and construction machinery
Seldom, operating expenses is very high.
Above-mentioned discussion content purpose be to reader introduce may be described below and/or advocate it is of the invention each
The various aspects of the related technology of individual aspect, it is believed that the discussion content contributes to as reader with background's information, to be conducive to more
Understand present disclosure well.
The content of the invention
It is an object of the invention to avoid of the prior art not enough and provide a kind of steel concrete-steel structure for offshore wind farm
Mixing gravity type foundation and its construction method, its pile foundation that need not construct, basic integral manufacturing by land, convenient construction saves work
Phase, overall economics are good, it is adaptable to which basement rock buries shallower marine site.
In order to overcome prior art not enough, the technical solution used in the present invention is：A kind of steel for offshore wind farm is provided
Concrete-steel structure mixing gravity type foundation, including the steel supporting structure on caisson base and top, the caisson base is gravity type steel
Muscle concrete cavity structure, the steel supporting structure is fixed on caisson base, and steel supporting structure top is provided with and blower fan
The foundation ring of tower connection, on the caisson base and/or steel supporting structure the sky for being communicated to the caisson base is provided with
The passage of pouring water in chamber.
Wherein, the steel supporting structure is catheterostat, is provided with caisson base corresponding with the supporting leg of catheterostat
Supporting leg firm banking, the supporting leg is fixed on supporting leg hold-down support.
Wherein, the lower end of the supporting leg is embedded in the inside of supporting leg firm banking, or, the supporting leg and supporting leg firm banking
The pre-buried steel Member Welding connection on top.
Wherein, the passage of pouring water is made up of the endoporus of the irrigation pipe and supporting leg that are arranged on the wall of the caisson base,
Described irrigation pipe one end connects with cavity, and the other end is connected with the endoporus lower end of supporting leg.
Wherein, the steel supporting structure is single large diameter steel pipe, and the top cover central authorities of caisson base are provided with steel pipe and consolidate
Determine base, the lower end of the large diameter steel pipe is embedded in steel pipe firm banking.
Wherein, the passage of pouring water is made up of the endoporus of the large diameter steel pipe, the endoporus lower end of large diameter steel pipe and institute
State the cavity connection of caisson base.
Wherein, the caisson base is circular or regular polygon caisset, and its top cover is tapered slope or sphere curved surface,
And/or, it is provided with ribs on the caisson base.
Wherein, the base plate of the caisson base is provided with the bedding grout hole that can be closed or take apart, bedding grout hole upper end
It is connected to reserved grouting conduit；And/or, the top cover of the caisson base is provided with the backfill hole that can be closed or take apart.
Present invention also offers a kind of construction method of the steel concrete-steel structure mixing gravity type foundation for offshore wind farm, bag
Include following steps：
S1, make the steel supporting structure with foundation ring, land fabrication caisson base, and steel is supported in factory process
Structure and caisson base composition overall structure；
S2, the ground to offshore wind power foundation carry out the process such as dredge, and formation reaches the bedding of preset planeness；
S3, the backfill hole reserved to caisson base, bedding grout hole carry out envelope storehouse, and/or, plug-in floating gasbag, basis
Lower water, scene is transported to by crane ship and tugboat and using partly latent barge or by the buoyancy of base structure itself by basis；
S4, partly latent are refuted and sunk to hauling out after base structure positioning or the direct base structure positioning by transportation by driving to scene, Jing
Pour water passage to caisson base cavity inside pour water sinking basis, make basis be accurately seated on bedding；
S5, the backfill hole reserved by top cover or large diameter steel pipe fill sand or rubble to caisson base intracavity；
S6, the tower that offshore wind farm unit is installed by the foundation ring at the top of steel supporting structure.
Wherein, between step S4 and S5, by the grout hole arranged on base plate bedding is carried out using reserved grout pipe
Pressure grouting.
Beneficial effects of the present invention：The base structure combines reinforced concrete structure with the advantage of steel construction, with
Reinforced concrete cavity structure is used as can be from floating sole plate, steel construction as upper support structure, without the need for pile foundation of constructing, it is to avoid
Numerous and diverse working procedures such as pile foundation pile sinking, embedding rock.Whole basis makes by land assembling, good integrity, can refute by partly latent or
Transport by natural buoyancy, without the need for large-scale crane ship, only need to excavate after ground top layer weak soil and construction bedding just can sinking install,
Contraction in Site is simple, and technical maturity, difficulty of construction is less, and the duration saves, it is adaptable to which supporting course buries shallower sea area.
In a word, the base structure batch production degree is high, integration is good, the simple quick, good economy performance of construction, has in ocean engineering wide
Wealthy application prospect.
Description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not constitute any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is the structural representation of the steel concrete-steel structure mixing gravity type foundation embodiment one for offshore wind farm.
Fig. 2 is Section A-A schematic diagram in Fig. 1.
Fig. 3 is section B-B schematic diagram in Fig. 2.
Fig. 4 is the structural representation of the steel concrete-steel structure mixing gravity type foundation embodiment two for offshore wind farm.
Fig. 5 is C-C schematic cross-sections in Fig. 4.
Fig. 6 is D-D schematic cross-sections in Fig. 5.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and concrete real
The present invention is described in further detail to apply example, it should be noted that in the case where not conflicting, embodiments herein and
Feature in embodiment can be mutually combined.
The core of the present invention is to provide a kind of steel concrete-steel structure mixing gravity type foundation and its construction for offshore wind farm
Method, its batch production degree is high, integration is good, the simple quick, good economy performance of construction.
As shown in Figure 1, 2, 3, a kind of steel concrete-steel structure mixing gravity for offshore wind farm that the embodiment of the present invention one is provided
Formula basis, including the caisson base 11 and the steel supporting structure on top of bottom, steel supporting structure is catheterostat 13, catheterostat
13 is steel truss structure, with multiple supporting legs 16.Caisson base 11 is gravity type reinforced concrete cavity structure, can be circular or just many
Side shape, the inner side of outer wall 22 of caisson base 11 is provided with the supporting leg firm banking 17 corresponding with the supporting leg 16 of catheterostat 13, leads
Pipe support 13 is connected and fixed on caisson base 11 by supporting leg 16 and supporting leg firm banking 17, and the top of catheterostat 13 is arranged
There is the foundation ring 15 being connected with blower fan tower barrel.
Used as preferred embodiment, the lower end of the supporting leg 16 of catheterostat 13 is embedded in the inside of supporting leg firm banking 17,
Caisson base 11 is set to be fixedly connected with catheterostat 13.Or supporting leg 16 connects with the pre-buried steel Member Welding on the top of supporting leg firm banking 17
Connect, be so easy to caisson base 11 and catheterostat 13 to be fabricated separately, secondary assembling.Above two fixed form has irrigation pipe 18
The endoporus of supporting leg 16 is connected to form passage of pouring water with the cavity of caisson base 11, is easy to the sunk type of caisson base 11 to pour water.
Used as preferred embodiment, the top cover 21 of caisson base 11 can be tapered slope or sphere curved surface, in top cover 21
The reserved backfill hole 24 that can be closed and take apart in centre, convenient basis backfills sand material after installing.
Used as preferred embodiment, band toe base plate 23, outer wall 22, the top cover 21 of the caisson base 11 is near cavity
Side be provided with ribs 19, to strengthen intensity, the rigidity of caisson base 11.
Used as preferred embodiment, the base plate 23 of the caisson base 11 is provided with closed bedding grout hole 20,
Reserved grouting conduit is terminated with bedding grout hole 20, grouting conduit upper end is extended on the water surface.After basis is installed, take apart
Grout hole 20, by the grouting conduit reserved, base plate 23 is filled into from more than the water surface using pressure by grouting material (cement mortar)
In beneath bedding, to improve the globality and stability of bedding.
As shown in Figure 4,5, 6, the another kind that the embodiment of the present invention two is provided is used for the steel concrete-steel structure mixing weight of offshore wind farm
Power formula basis, including the caisson base 11 and top steel supporting structure of bottom.The large diameter steel pipe 14 that steel supporting structure is,
Caisson base 11 is gravity type reinforced concrete cavity structure, can be circular or regular polygon, and its top cover 21 is tapered slope, major diameter
The lower end of steel pipe 14 is embedded within the steel pipe firm banking 26 in the central authorities of top cover 21, and top cover 21 and steel pipe firm banking 26 can be steel
Muscle concrete or prestressed reinforced concrete, the top of large diameter steel pipe 14 is provided with the foundation ring 15 being connected with blower fan tower barrel.
Used as preferred embodiment, the band toe base plate 23, outer wall 22 of the caisson base 11, top cover 21 are provided with reinforcement
Rib 19, to strengthen the intensity of base structure.
Used as preferred embodiment, the base plate 23 of the caisson base 11 is provided with closed bedding grout hole 20,
Can meet carries out the needs of pressure grouting to bedding after basis is installed.
The lifting of crane ship for convenience, presets on caisson base 11 in above-mentioned two kinds of embodiments and shackle plate or hangs
Ring.
In order to implement the steel concrete for offshore wind farm for offshore wind farm-steel structure mixing gravity type as shown in Figures 1 to 6
Basis, the embodiment of the present invention additionally provides a kind of construction method, comprises the steps：
S1, make the steel supporting structure with foundation ring 15 in factory process, land fabrication caisson base 11, and by steel
Supporting structure and the composition overall structure of caisson base 11；
S2, the ground to wind power foundation carry out the process such as dredge, and form the bedding 25 of preset planeness；
S3, the backfill hole 24 reserved to base structure, bedding grout hole 20 carry out envelope storehouse, and/or, plug-in floating gasbag,
The lower water in basis, scene is transported to by crane ship and tugboat and using partly latent barge or by the basic buoyancy of itself by basis；
S4, partly latent are refuted and sunk to hauling out after base structure positioning or the direct base structure positioning by transportation by driving to scene, Jing
Pour water passage to caisson base cavity inside pour water sinking basis, make basis be accurately seated on bedding 25；
S5, the backfill hole 24 reserved by top cover or large diameter steel pipe 14 fill sand or rubble to the intracavity of caisson base 11；
S6, the tower that offshore wind farm unit is installed by the foundation ring 15 at the top of steel supporting structure.
Wherein, after step s4, before step S5, if it is desired, after basis is installed, taking grout hole 20 apart, pass through
Reserved grouting conduit, grouting material (cement mortar) is filled into the bedding 25 under base plate 23 from more than the water surface using pressure
In, to improve the globality and stability of bedding.
Many details are elaborated in above description in order to fully understand the present invention, but, the present invention can be with
It is different from other similar fashions described here to implement using other, it is thus impossible to be interpreted as to the scope of the present invention
Limit.
In a word, although the present invention illustrates above-mentioned preferred implementation, although it should be noted that those skilled in the art
Member can carry out various change and remodeling, unless such change and remodeling substantially deviate from the scope of the present invention, otherwise
Should be construed as being included in protection scope of the present invention.
Claims (8)
1. a kind of steel concrete-steel structure mixing gravity type foundation for offshore wind farm, it is characterised in that：Including caisson base (11) and
The steel supporting structure on top, the caisson base (11) is gravity type reinforced concrete cavity structure, and the steel supporting structure is consolidated
On caisson base (11), steel supporting structure top is provided with the foundation ring (15) being connected with blower fan tower barrel, the steel
The passage of pouring water for being communicated to the caisson base (11) internal cavities is provided with matter supporting structure, the steel supporting structure is
Catheterostat (13), is provided with the supporting leg firm banking corresponding with the supporting leg (16) of catheterostat (13) on caisson base (11)
(17), the supporting leg (16) is fixed on supporting leg hold-down support (17), and the passage of pouring water is by being arranged on the caisson base
(11) endoporus of irrigation pipe (18) and supporting leg (16) on wall is constituted, and described irrigation pipe (18) one end connects with cavity, another
End connects with the endoporus lower end of supporting leg (16).
2. the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to claim 1, it is characterised in that：Institute
The lower end for stating supporting leg (16) is embedded in the inside of supporting leg firm banking (17), or, the supporting leg (16) and supporting leg firm banking
(17) the pre-buried steel Member Welding connection on top.
3. the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to claim 1, it is characterised in that：Institute
It is single large diameter steel pipe (14) to state steel supporting structure, and top cover (21) central authorities of caisson base (11) are provided with steel pipe and fix bottom
Seat (26), the lower end of the large diameter steel pipe (14) is embedded in steel pipe firm banking (26).
4. the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to claim 3, it is characterised in that：Institute
State passage of pouring water to be made up of the endoporus of the large diameter steel pipe (14), the endoporus lower end of large diameter steel pipe (14) and the caisson bottom
The cavity connection of seat (11).
5. the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to any one of claim 1 to 4, its
It is characterised by：The caisson base (11) is circular or regular polygon caisset, and its top cover (21) is tapered slope or spherical
Curved surface, and/or, it is provided with ribs (19) on the caisson base (11).
6. the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to any one of claim 1 to 4, its
It is characterised by：The base plate (23) of the caisson base (11) is provided with the bedding grout hole (20) that can be closed or take apart, and bedding is filled
Reserved grouting conduit is terminated with slurry hole (20)；And/or, the top cover (21) of the caisson base (11) be provided with can close or
The backfill hole (24) taken apart.
7. a kind of construction method of the steel concrete-steel structure mixing gravity type foundation for offshore wind farm, it is characterised in that including as follows
Step：
S1, make the steel supporting structure with foundation ring (15) in factory process, land fabrication caisson base (11), and by steel
Supporting structure and caisson base (11) composition overall structure；
S2, the ground to offshore wind power foundation carry out process of dredging, and formation reaches the bedding (25) of preset planeness；
S3, the backfill hole (24) reserved to caisson base (11), bedding grout hole (20) carry out envelope storehouse, and/or, it is plug-in to help floating gas
Capsule, water under base structure, by crane ship and tugboat and using partly latent barge or by base structure itself buoyancy by basis
It is transported to scene；
S4, partly latent are refuted and sink to hauling out after base structure positioning or the direct base structure positioning by transportation by driving to scene, and Jing pours water
Passage to caisson base (11) cavity inside pour water sinking basis, make basis be accurately seated on bedding (25)；
S5, the backfill hole (24) reserved by top cover or large diameter steel pipe (14) fill sand or rubble to caisson base (11) intracavity；
S6, the tower that offshore wind farm unit is installed by the foundation ring (15) at the top of steel supporting structure.
8. the construction method of the steel concrete-steel structure mixing gravity type foundation for offshore wind farm according to claim 7, it is special
Levy and be：Between step S4 and S5, by the grout hole (20) arranged on base plate bedding (25) is entered using reserved grout pipe
Row pressure grouting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410633320.0A CN104389318B (en) | 2014-11-11 | 2014-11-11 | Reinforced concrete-steel structure hybrid gravity foundation for offshore wind power and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410633320.0A CN104389318B (en) | 2014-11-11 | 2014-11-11 | Reinforced concrete-steel structure hybrid gravity foundation for offshore wind power and construction method thereof |
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| CN104389318A CN104389318A (en) | 2015-03-04 |
| CN104389318B true CN104389318B (en) | 2017-05-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201008B (en) * | 2015-07-22 | 2020-04-03 | 清华大学 | Pin type bending-resistant longitudinal connecting joint and construction method thereof |
| CN105401590B (en) * | 2015-11-20 | 2019-03-12 | 国家电网公司 | The basic construct object and preparation method thereof with pipe protection channel for steel tube tower installation |
| CN106049525A (en) * | 2016-07-27 | 2016-10-26 | 天津大学 | Polygonal offshore wind power barrel-shaped foundation |
| CN106638659A (en) * | 2016-10-27 | 2017-05-10 | 中国电建集团华东勘测设计研究院有限公司 | Towing truss-gravity type combined offshore wind turbine foundation structure and construction method thereof |
| CN109235479B (en) * | 2018-09-21 | 2024-05-14 | 中交一航局第二工程有限公司 | Large-tonnage abutment and prefabricating and floating type butt joint construction method thereof |
| CN109458304A (en) * | 2018-11-30 | 2019-03-12 | 上海电气风电集团有限公司 | A kind of semisubmersible-type floatation type blower foundation suitable for big megawatt-level wind unit |
| CN110439018B (en) * | 2019-08-02 | 2024-11-05 | 中交第四航务工程勘察设计院有限公司 | Inserted steel cylinder wind power foundation |
| CN111764394A (en) * | 2020-07-06 | 2020-10-13 | 华电重工股份有限公司 | Installation method of cylindrical foundation |
| CN112962650A (en) * | 2021-03-19 | 2021-06-15 | 杨帅 | Pile foundation reinforcing device for highway bridge detection |
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| CN204282390U (en) * | 2014-11-11 | 2015-04-22 | 熊翱 | For the steel concrete-steel structure mixing gravity type foundation of offshore wind farm |
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| JP2002256573A (en) * | 2001-03-02 | 2002-09-11 | Chubu Electric Power Co Inc | Foundation for existing foundation reinforcing steel tower and construction method for it |
| DE102008041849A1 (en) * | 2008-09-05 | 2010-03-25 | Max Bögl Bauunternehmung GmbH & Co. KG | Off-shore system, foundation of an off-shore system and method for setting up an off-shore system |
| CN102359117B (en) * | 2011-07-19 | 2013-05-29 | 中国水电顾问集团中南勘测设计研究院 | Concrete gravity type foundation applied to ocean engineering and installation method thereof |
| CN103469808B (en) * | 2013-09-24 | 2015-12-30 | 广东明阳风电产业集团有限公司 | The offshore wind turbine foundation that a kind of concrete caisson and jacket combine |
| CN203701139U (en) * | 2014-01-24 | 2014-07-09 | 熊翱 | Jacket with gravity type caisson base |
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| CN204282390U (en) * | 2014-11-11 | 2015-04-22 | 熊翱 | For the steel concrete-steel structure mixing gravity type foundation of offshore wind farm |
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Effective date of registration: 20221201 Address after: 511400 Room 204, 2nd Floor Office, No. 115, Huanshi Avenue West, Nansha District, Guangzhou, Guangdong Province (office only) Patentee after: GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co.,Ltd. Address before: 1701, No. 7, Xintai Street, Binjiang East Road, Haizhu District, Guangzhou, Guangdong 510300 Patentee before: Xiong Ao |