CN208486284U - A kind of offshore wind farm gravity block basis - Google Patents

A kind of offshore wind farm gravity block basis Download PDF

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Publication number
CN208486284U
CN208486284U CN201820538075.9U CN201820538075U CN208486284U CN 208486284 U CN208486284 U CN 208486284U CN 201820538075 U CN201820538075 U CN 201820538075U CN 208486284 U CN208486284 U CN 208486284U
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China
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gravity block
steel shell
steel
offshore wind
wind farm
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CN201820538075.9U
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Inventor
胡中波
朱红兵
杨昕光
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China Three Gorges Corp
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China Three Gorges Corp
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Abstract

The utility model discloses a kind of offshore wind farm gravity block bases, the basis is suitable for overburden cover and is no more than 10m and lower part no more than 5m, the depth of water for the seabed conditions of basement rock, it includes steel shell structure, concrete gravity block and steel structure member, the steel shell inside configuration cavity concrete perfusion, upper socket concrete gravity block, top are connect using steel structure member with blower fan tower barrel.The structure type can prefabricated by land, marine Fast Installation; construction equipment is required simultaneously low; and it can be according to load flexible modulation structure size; with the advantages such as bearing capacity is high, erosion control brushing effects are good, duty cycle is short, construction cost is low, offshore construction process is simple, to realize that the scale exploitation of offshore wind farm provides technical support.

Description

A kind of offshore wind farm gravity block basis
Technical field
The utility model relates to a kind of offshore wind power foundation, especially a kind of offshore wind farm gravity block basis.Suitable for covering Depth of cover is no more than 5m, the depth of water is no more than 10m and lower part is the seabed conditions of basement rock.
Background technique
Developing new energy is the important channel for solving energy demand and keeping social sustainable development, due to marine wind electric field Have many advantages, such as that close apart from load center, to be not take up land resources, wind-resources abundant and stablize, is that most scale is sent out at present The new energy of exhibition prospect.The particularity of complexity and the transmitting of blower tall and slender structure load in view of marine environment, blower foundation Safety, economy, durability and applicability are to restrict the key factor of offshore wind power development.
Currently, offshore wind power foundation form mainly includes large diameter single pile foundation, jacket basis and High-Rise Pile Cap Foundation Deng.Gravity type foundation is mechanical by offshore construction and sea bed orographic condition is limited as traditional base form, China not Have and is applied well.
In recent years, with the continuous expansion of offshore wind power development scale, Fujian, Guangdong and Along The Coast of Dalian Area area are generally existing The engineering geological condition of shallow overburden+rock foundation even exposed bedrock, the construction of traditional pile foundation are faced with piling difficulty Greatly, bore operation period length, construction cost valuableness etc. are challenged.And gravity type foundation resists external load effect by own wt, The construction work of achievable primary structure by land is provided simultaneously with from towage transportation by driving, operating expenses is low, marine Fast Installation etc. is excellent Gesture, can satisfy the demand of offshore wind farm scale exploitation, thus have broad application prospects.
Utility model content
The technical problem to be solved by the utility model is to pile foundation construction there are aiming at the problem that, a kind of adaptation is provided Shallow overburden and basement rock ground, can prefabricated by land, marine Fast Installation, the accurate control of transportation by driving towage, sinking and leveling can be achieved The offshore wind farm gravity block basis of system.
In order to realize above-mentioned technical characteristic, purpose of the utility model is realized as follows: a kind of offshore wind farm gravity Block basis, it includes steel shell structure, and the steel shell structure upper is socketed precast concrete gravity block, empty in the inside of steel shell structure Chamber concrete perfusion covers one layer of flexible cushion on the surface of steel shell structure, and the top of the steel shell structure passes through steel construction structure Part is connect with blower fan tower barrel.
The steel structure member is made of top plate and prestress wire, top plate reserving hole channel, prestress wire one end By reserving hole channel and flanged joint, the prestress wire other end is connect through the steel shell structure anchoring section pre-buried with bottom plate.
The basis needs hydraulic reclamation Surface mulch layer to bedrock surface before sinking, smooth location, and is equipped with pad in foundation bottom Layer, basic infrastructure and surrounding a certain range fill block stone throwing.
The steel shell structure, concrete gravity block, the top plate of steel structure member and prestress wire are precast construction.
The steel shell structure upper end opening, lower end closed, upper narrow lower thick, centre are arc-shaped transition structure.
The utility model has the advantages that:
1, this gravity block basis is no more than 10m no more than 5m, the depth of water suitable for overburden cover and lower part is the sea of basement rock Riffling part hangs without putting into large-scale crane ship and installation, heavy piling is helped to beat due to not being related to the working procedures such as pile sinking, drilling Stake is sunk, and can evade the construction problem of embedded rock pile to the greatest extent, is reduced construction threshold and cost, is made basis wind at sea Electrical domain is more competitive.
2, the steel shell structure on gravity block basis, concrete gravity block and steel structure member can be prefabricated by land, marine fast Speed installation, not only saves the construction time, but also reduce construction risk, to realize that the scale exploitation of offshore wind farm provides technology Support.
3, gravity block basic infrastructure supporting course is located in basement rock, and top concrete gravity block enters 2-3 meters of mud, can provide foot Enough level, vertical bearing capacity, and have good erosion control brushing effects.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the facade layout drawing of the utility model embodiment.
Fig. 2 is the floor plan of the utility model embodiment.
In figure: steel shell structure 1, concrete gravity block 2, intracavitary concrete 3, flexible cushion 4, steel structure member 5, top plate 6, Prestress wire 7, coating 8, bed course 9, fill block stone throwing 10.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and with embodiment, but the utility model is interior Appearance is not limited only to content involved in embodiment, that is, is not meant to be any restriction to the utility model protection content.
Such as Fig. 1-2, a kind of offshore wind farm gravity block basis, it includes steel shell structure 1,1 upper socket of steel shell structure Precast concrete gravity block 2 covers one layer on the surface of steel shell structure 1 in the internal cavities concrete perfusion 3 of steel shell structure 1 The top of flexible cushion 4, the steel shell structure 1 is connect by steel structure member 5 with blower fan tower barrel.Further, the steel knot Structure component 5 is made of top plate 6 and prestress wire 7, and 6 reserving hole channel of top plate, 7 one end of prestress wire passes through reserving hole channel With flanged joint, 7 other end of prestress wire is connect through the anchoring section pre-buried with bottom plate of steel shell structure 1.By using upper The steel structure member 5 stated enhances the stability on entire basis.
Further, the basis needs hydraulic reclamation Surface mulch layer 8 to bedrock surface before sinking, smooth location, and on basis Bottom is equipped with bed course 9, basic infrastructure and surrounding a certain range fill block stone throwing 10.By being carried out clearly to layer coating 8 of filling in a form in advance Reason, ensure that the stability on subsequent basis.
Further, the steel shell structure 1, concrete gravity block 2, steel structure member 5 top plate 6 and prestress wire 7 be precast construction.It is prefabricated to ensure that it can be carried out in factory by using precast construction, then it is carried out by cargo ship Transport, finally only needs to carry out assembly to it, and then greatly improve construction efficiency, reduces construction cost.
Further, 1 upper end opening of steel shell structure, lower end closed, upper narrow lower thick, centre are arc-shaped transition structure. It ensure that the stability on entire wind-powered electricity generation gravity block basis by using the steel shell structure 1 of above structure.
The utility model implementation process is as follows:
Embodiment offshore wind farm gravity block basis, the top including steel shell structure 1, concrete gravity block 2, steel structure member 5 Plate 6 and prestress wire 7 are precast construction, can prefabricated completion by land.Before foundation immersion, hydraulic reclamation Surface mulch layer 8 is needed To bedrock surface, and bedding is flattened, bedding can be excavated when necessary, jackstone, the processes such as ram, to guarantee bedding Bearing capacity and flatness meet design requirement, and the thickness of bed course 9 and fill block stone throwing 10 can be adjusted according to flatness.Steel shell knot Structure 1 can by barge dragging, pushing tow, transportation by driving to designated position, by 1 internal cavities of steel shell structure concrete perfusion 3 increase Add construction weight, and realizes steady sinking by dead load.After steel shell structure 1 sinks down into designated position, one around basis Determine range fill block stone throwing 10.Air bag rolling fortune shipment can be used in concrete gravity block 2, by barging to designated position, and by Weight ship is lifted to 1 top of steel shell structure, and steady decentralization is realized after accurate positioning, is contacted with flexible cushion 4 closely, until and steel shell Structure 1 is socketed integral.After the completion of entire foundation construction, the flanged joint of prestress wire 7 and blower fan tower barrel can be passed through.
Above-described embodiment is mainly used for offshore wind farm gravity type foundation, and however, it is not limited to this, for other ocean engineerings Related gravity type foundation can be also improved by technical solutions of the utility model to optimize in the form of foundation structure.
Above-described embodiment is used to illustrate the utility model, rather than limits the utility model, practical at this In novel spirit and scope of protection of the claims, to any modifications and changes that the utility model is made, this reality is both fallen within With novel protection scope.

Claims (5)

1. a kind of offshore wind farm gravity block basis, it is characterised in that: it includes steel shell structure (1), steel shell structure (1) top It is socketed precast concrete gravity block (2), in the internal cavities concrete perfusion (3) of steel shell structure (1), in steel shell structure (1) Surface covers one layer of flexible cushion (4), and the top of the steel shell structure (1) is connect by steel structure member (5) with blower fan tower barrel.
2. a kind of offshore wind farm gravity block basis according to claim 1, it is characterised in that: the steel structure member (5) It is made of top plate (6) and prestress wire (7), top plate (6) reserving hole channel, prestress wire (7) one end passes through preformed hole Road and flanged joint, prestress wire (7) other end are connect through steel shell structure (1) anchoring section pre-buried with bottom plate.
3. a kind of offshore wind farm gravity block basis according to claim 1, it is characterised in that: the basis is needed before sinking Hydraulic reclamation Surface mulch layer (8) is to bedrock surface, smooth location, and is equipped with bed course (9) in foundation bottom, and basic infrastructure and surrounding are certain Range fill block stone throwing (10).
4. a kind of offshore wind farm gravity block basis according to claim 1 or 2, it is characterised in that: the steel shell structure (1), concrete gravity block (2), the top plate (6) of steel structure member (5) and prestress wire (7) are precast construction.
5. a kind of offshore wind farm gravity block basis according to claim 1, it is characterised in that: on the steel shell structure (1) End opening, lower end closed, upper narrow lower thick, centre are arc-shaped transition structure.
CN201820538075.9U 2018-04-16 2018-04-16 A kind of offshore wind farm gravity block basis Active CN208486284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820538075.9U CN208486284U (en) 2018-04-16 2018-04-16 A kind of offshore wind farm gravity block basis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820538075.9U CN208486284U (en) 2018-04-16 2018-04-16 A kind of offshore wind farm gravity block basis

Publications (1)

Publication Number Publication Date
CN208486284U true CN208486284U (en) 2019-02-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331734A (en) * 2019-07-05 2019-10-15 天津大学前沿技术研究院 A kind of cylinder-shaped foundation structure excavates offshore construction method in advance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331734A (en) * 2019-07-05 2019-10-15 天津大学前沿技术研究院 A kind of cylinder-shaped foundation structure excavates offshore construction method in advance
CN110331734B (en) * 2019-07-05 2021-01-12 天津大学前沿技术研究院 Cylindrical foundation structure pre-excavation offshore construction method

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