CN205653811U - Marine fan gravity type foundation and basic system - Google Patents

Marine fan gravity type foundation and basic system Download PDF

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Publication number
CN205653811U
CN205653811U CN201620327902.0U CN201620327902U CN205653811U CN 205653811 U CN205653811 U CN 205653811U CN 201620327902 U CN201620327902 U CN 201620327902U CN 205653811 U CN205653811 U CN 205653811U
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China
Prior art keywords
cylinder
gravity type
type foundation
platform
flange plate
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Chinese (zh)
Inventor
元国凯
凌影
刘晋超
毕明君
张力
马兆荣
陈玉华
何小华
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China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
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China Energy Construction Group Guangdong Electric Power Design Institute Co Ltd
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Abstract

The utility model discloses a marine fan gravity type foundation and applied this gravity type foundation's basic system, this sea fan gravity type foundation includes assembled fitting's bottom plate, first barrel, second barrel and platform in proper order, and the filler passageway that formation is used for packing the ballast is connected to bottom plate, first barrel and second barrel, and the platform trompil with filler passageway intercommunication is offered to the platform. Gravity type foundation be hollow structure, to a great extent has alleviateed gravity type foundation's dead weight, has saved the material, simultaneously the bottom plate with between the first barrel first barrel with between the second barrel the second barrel with equal assembled fitting between the platform, the utility model discloses can all build each structure in advance in the land, later assemble an organic whole more in proper order, reduce this gravity type foundation's engineering time effectively, realize simple and easy, quick construction, reduction construction time and manpower, greatly reduced manufacturing cost.

Description

Offshore wind turbine gravity type foundation and basic system
Technical field
This utility model relates to the basic engineering technical field of wind power generating set, especially relates to a kind of offshore wind turbine gravity type foundation and basic system.
Background technology
At present, offshore wind turbine foundation mainly has single-pile foundation, gravity type foundation, catheterostat basis, under water three pile foundations and three pile foundation patterns waterborne etc..Wherein, gravity type foundation is as the foundation pattern of a kind of comparative maturity, and the most at sea be used widely in wind-powered electricity generation field.Being structurally characterized in that of it provides stability by self bigger gravity and inserts.In numerous foundation pattern, gravity type foundation is the one that stability is best, and it is not limited by blower fan type, and profile variation can freely control, preferable in geology, the advantage that the shallower marine site of the depth of water has uniqueness.But, the construction of current existing gravity type foundation is mostly at dock or directly on barge, the cast-in-place mode of omnidistance employing makes basis, afterwards by wherein this mode of construction of equipment hoisting long construction period, expending a large amount of manpower, material resources and financial resources, this adds the cost of investment of offshore wind farm to a certain extent.
Utility model content
Based on this, this utility model is to overcome the defect of prior art, it is provided that a kind of build quick, simple and that production cost is relatively low offshore wind turbine gravity type foundation and basic system, significantly simplify the work progress of blower foundation, improves the economy of blower foundation.
Its technical scheme is as follows:
A kind of offshore wind turbine gravity type foundation, including loop wheel machine and the base plate of assembly and connection, the first cylinder, the second cylinder and platform successively, described base plate, described first cylinder and described second cylinder connect the filler passage formed for filling ballast, described platform is provided with the platform perforate connected with described filler passage, and described loop wheel machine is installed on described platform.
Wherein in an embodiment, described first cylinder is conically shaped, and described second cylinder is circular cylinder.
Wherein in an embodiment, being provided with the multiple dividing plates standing on described base plate in described filler passage, multiple described dividing plates are connected around axis circumferentially and all inwalls with described first cylinder of described first cylinder.
Wherein in an embodiment, also include the leveling flange part being located on described platform, described leveling flange part includes lower flange plate that upper flange plate is oppositely arranged with described upper flange plate and organizes securing member more, often organizes described securing member and all includes that two ends are each passed through described upper flange plate and the screw rod of described lower flange plate and coordinate the nut described upper flange plate and described lower flange plate fastened with described screw rod.
Wherein in an embodiment, described upper flange plate and described lower flange plate are annular slab, described platform is arranged with the holding tank arranged around described platform perforate, and described upper flange plate and described lower flange plate are respectively positioned in described holding tank, and the described securing member of many groups is circumferentially.
Wherein in an embodiment, also including sea cable protection pipe, the sidewall of described first cylinder offers the opening connected with described filler passage, and described sea cable protection pipe stretches into described filler passage from described platform perforate, and stretches out from described opening.
Wherein in an embodiment, also include multiple prestress anchorage cable, the sidewall of described first cylinder and described second cylinder is equipped with and described prestress anchorage cable anchor cable passage one to one, it is provided with in described first cylinder and described prestress anchorage cable the first anchored end one to one, described platform is provided with and described first anchored end the second anchored end one to one, described prestress anchorage cable one end is anchored in described first anchored end, the other end sequentially passes through described first cylinder and the described anchor cable passage of described second cylinder and is anchored in described second anchored end, multiple described prestress anchorage cables are evenly arranged around described filler passage circumference.
Wherein in an embodiment, the outer wall of described first cylinder is additionally provided with sacrificial anode block or corrosion-inhibiting coating, the outer wall of described first cylinder is additionally provided with multiple hanger, and multiple described hanger circumferences are evenly arranged, and described hanger is all located at the centre of buoyancy absolute altitude of this gravity type foundation.
The technical program additionally provides a kind of basic system, including above-mentioned gravity type foundation and foundation pit, basis sea bed it is provided with in described foundation pit, described basis sea bed includes sea bed filter course and is positioned at the sea bed gravel layer above described sea bed filter course, described base plate is fixed on described sea bed gravel layer, and described sea bed gravel layer is provided with gutter.
Wherein in an embodiment, being additionally provided with for backfilling material and being covered in the scour protection layer above described backfill material in described foundation pit, described scour protection layer includes protection against erosion filter course and is positioned at the protection against erosion armour layer above filter course.
Advantage or principle to preceding solution illustrate below:
This utility model provides a kind of offshore wind turbine gravity type foundation, it includes base plate, the first cylinder, the second cylinder and is located at the platform of described second cylinder top, this gravity type foundation is the structure of hollow, largely alleviates the deadweight of gravity type foundation, saves material;Equal assembly and connection between the most described base plate and described first cylinder, between described first cylinder and described second cylinder, between described second cylinder and described platform, compare to the most cast-in-place traditional form of construction work, this utility model can be by the most constructed for each structure, it is assembled into one the most successively, efficiently reduce the engineering time of this gravity type foundation, it is achieved simple, rapid construction;Modules component batch metaplasia can be carried out produce simultaneously, improve construction speed, reduce construction period, reduce the holding time in large-scale place, reduce construction-time and manpower, be substantially reduced production cost.
This utility model the first barrel designs on the downside of it is conically shaped structure, is conducive to strengthening stability and the resistance to capsizing on whole basis, and the second barrel designs on the upside of it is that circular cylinder structure is conducive to the connection of blower fan tower barrel and the stop of boats and ships simultaneously.
Being provided with multiple dividing plate in the filler passage of this gravity type foundation, described filler passage is separated into multiple adjusting cabins circumferentially by multiple described dividing plates.During sinking under the foundation, need to make basis in place toward basic internal jackstone or water etc., by separating in basis, multiple adjusting cabin is set, facilitate look at the water in different adjusting cabin bodies or the amount of stone, such that it is able to regulate the injection direction of water or stone etc. as required, and then can ensure that balanced weight in filler passage, basis is in place safe and stable.
This utility model also includes being located on described platform the leveling flange part for connecting fan tower, described leveling flange part includes upper flange plate, lower flange plate and organizes securing member more, often group securing member all includes a screw rod and multiple nut, and the two ends of each screw rod are each passed through upper flange plate and lower flange plate and are fastened by nut.This utility model can pass through adjusting nut installation site on screw rod thus reach the effect being finely adjusted upper flange plate height, so that the flatness of this gravity type foundation flange face meets assembling requirement, has good adaptability.
This utility model also includes that multiple prestress anchorage cable, multiple described prestress anchorage cable circumferences are evenly arranged, and prestress anchorage cable provides prestressing force for whole basis so that basis is in tensioning state all the time, and prevention blower fan tower barrel tilts effectively, it is ensured that fan safe is run.
The outer wall of described first cylinder is additionally provided with sacrificial anode block or corrosion-inhibiting coating, for the reinforcing bar in basis and the steel construction that is connected with reinforcing bar are carried out effective anticorrosion.Additionally, the outer wall of described first cylinder is additionally provided with multiple hanger, described hanger, for towage or basic in place, uses the floating mode dragged of entirety, uses some towboats to carry out towage and transport this basis, significantly reduce cost of transportation.
Being provided with basis sea bed in foundation pit described in the utility model, described basis sea bed includes sea bed filter course and is positioned at the sea bed gravel layer above described sea bed filter course, overcomes the defect of natural sea bed, improves the safety on basis.Described sea bed gravel layer is provided with gutter, for discharging the water of compaction that gravity type foundation produces in sinking watching, prevents water of compaction from impacting basis sea bed, alleviates basic difficulty in place simultaneously.
Backfill material it is backfilled with in foundation pit described in the utility model; ensure the stability on basis; meet basis antidumping requirement; and backfill and on material, be coated with scour protection layer; for preventing seawater scouring blower foundation surrounding soil; take away the silt around basis, cause basic slope, bearing capacity reduction etc..
Accompanying drawing explanation
Fig. 1 is the structural representation of the offshore wind turbine gravity type foundation described in this utility model embodiment;
Fig. 2 is the structural representation of the leveling flange part described in this utility model embodiment;
Fig. 3 is the A direction view of Fig. 2;
Fig. 4 is the assembling schematic diagram of the gravity type foundation described in this utility model embodiment and towboat;
Fig. 5 is the structural representation of the basic system described in this utility model embodiment;
Fig. 6 is the top view of the foundation pit described in this utility model embodiment;
Fig. 7 is the flow chart of the construction method of the gravity type foundation described in this utility model embodiment.
Description of reference numerals:
null10、Sea level,20、Towboat,100、Base plate,110、Flat board,120、Shirt rim,130、Straight plate,140、Cannelure,150、Dividing plate,200、Conically shaped,210、Sacrificial anode block,220、Hanger,230、First anchored end,300、Circular cylinder,310、By the crashproof component of ship,320、Cat ladder,400、Platform,410、Manhole,420、Holding tank,430、Second anchored end,440、Platform perforate,500、Filler passage,510、Adjusting cabin,600、Sea cable protection pipe,610、Sea cable,700、Leveling flange part,710、Upper flange plate,720、Lower flange plate,730、Screw rod,740、Nut,800、Foundation pit,910、Sea bed filter course,920、Sea bed gravel layer,921、Gutter,930、Backfill material,940、Protection against erosion filter course,950、Protection against erosion armour layer,960、Ballast.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the drawings and the specific embodiments, this utility model is described in further detail.It should be appreciated that detailed description of the invention described herein is only in order to explain this utility model, do not limit protection domain of the present utility model.
As shown in Figure 1, a kind of offshore wind turbine gravity type foundation, including base plate 100, the second cylinder that the first cylinder of being located on described base plate 100 and described first cylinder are connected away from one end of described base plate 100 and the platform 400 being located at described second cylinder top, in the present embodiment, the first described cylinder is preferably conically shaped 200, the described second preferably circular cylinder of cylinder 300, bottom conically shaped 200, external diameter is less than or equal to the external diameter of base plate 100, and the external diameter bottom conically shaped 200 is equal to the external diameter of circular cylinder 300 simultaneously.All it is in the milk between described base plate 100 and described conically shaped 200, between described conically shaped 200 and described circular cylinder 300, between described circular cylinder 300 and described platform 400 connection, specifically, the anchor bar of certain length reserved by adjacent two components at connecting portion, utilizes high-strength grouting to be formed by connecting.Described base plate 100, described conically shaped 200 and described circular cylinder 300 connect the filler passage 500 formed for filling ballast 960, and described platform 400 offers the platform perforate 440 connected with described filler passage 500.Additionally, be additionally provided with loop wheel machine (not shown) on platform 400, for the lifting to equipment such as blower fans, facilitate installation and the maintenance of blower fan.This gravity type foundation is the structure of hollow, largely alleviates the deadweight of gravity type foundation, saves material;It is designed as pyramidal structure on the downside of it simultaneously, is conducive to strengthening stability and the resistance to capsizing on whole basis.First cylinder and the second cylinder are both designed as circular cylinder body also dependent on being actually needed by this utility model.Additionally, all it is in the milk between described base plate 100 and described conically shaped 200, between described conically shaped 200 and described circular cylinder 300, between described circular cylinder 300 and described platform 400 connection, compare to the most cast-in-place traditional gravity type foundation form of construction work, this utility model can be by the most constructed for each structure, it is assembled into one the most successively, the engineering time of this gravity type foundation can be efficiently reduced, it is achieved simple, rapid construction;Modules component batch metaplasia can be carried out produce simultaneously, improve construction speed, reduce the holding time in large-scale place, reduce construction-time and manpower, be substantially reduced production cost.
In the present embodiment, the junction of circular cylinder 300 and conically shaped 200 is positioned at below sea level 10, conically shaped 200 is made to be always positioned at below sea level 10, prevent conically shaped 200 length excessive, increase the contact area of itself and water, then increase load, still further aspect, only make circular cylinder 300 be retained in above sea level 10, be conducive to being beneficial to the alongside of boats and ships.This utility model should be according to different water depth, adjustable circular cylinder 300 and the length of conically shaped 200.This utility model arranges anti-ice cone also dependent on being actually needed in the junction of circular cylinder 300 and conically shaped 200, for resisting the impact of sea ice.
Described base plate 100 includes flat board 110 and is located at the low beneath shirt rim 120 of described flat board 110, and described shirt rim 120 is outer circumferentially arranged around described flat board 110.Shirt rim 120 can increase the interim resistance to capsizing on basis, improves the stability of erection stage.The length of shirt rim 120 described in the utility model depends on address situation, it is possible to be not provided with above-mentioned shirt rim 120 according to actual needs.Described base plate 100 also includes that the straight plate 130 that circumference is located on described flat board 110, described straight plate 130 one end are connected with described flat board 110, and the other end is connected with conically shaped 200.It addition, described flat board 110 is arranged with cannelure 140 bottom it, it is used for saving base plate 100 material usage, alleviates the weight of base plate 100.
The multiple dividing plates 150 stood on described base plate 100 it are additionally provided with in described filler passage 500, multiple described dividing plates 150 are connected around axis circumferentially and all inwalls with described conically shaped 200 of described conically shaped 200, described filler passage 500 is separated into multiple adjusting cabins 510 circumferentially by multiple described dividing plates 150, and described adjusting cabin 510 is preferably 4~8.During sinking under the foundation, need to make basis in place toward filler passage 500 internal jackstone or water etc., by separating in filler passage 500, multiple adjusting cabin 510 is set, facilitate look at the amount of the water in different nacelle or stone, such that it is able to adjust the injection direction of water or stone etc. as required, and then can ensure that balanced weight in filler passage 500, basis is in place safe and stable.
As shown in Figure 1 to Figure 3, this utility model also includes the leveling flange part 700 being located on described platform 400, described leveling flange part 700 includes the lower flange plate 720 being oppositely arranged with described upper flange plate 710 for the upper flange plate 710 of connecting fan tower and organizes securing member more, often organizes described securing member and all includes that two ends are each passed through described upper flange plate 710 and the screw rod 730 of described lower flange plate 720 and coordinate the nut 740 described upper flange plate 710 and described lower flange plate 720 fastened with described screw rod 730.Specifically, described upper flange plate 710 and described lower flange plate 720 are equipped with the connecting hole that the peripheral shape with described screw rod 730 coordinates, described screw rod 730 is through described upper flange plate 710 and the described connecting hole of described lower flange plate 720, and coordinate with described nut 740 described upper flange plate 710 and described lower flange plate 720 are fastened, often group securing member fixes upper flange plate 710 by two high strength nuts about 740, and fix lower flange plate 720 by two high strength nuts about 740.Preferably, the described securing member of many groups circumferentially two circle.This utility model can pass through the adjusting nut 740 installation site on screw rod 730 thus reach the effect being highly finely adjusted upper flange plate 710, so that the flatness of this gravity type foundation flange face meets assembling requirement, has good adaptability.
Preferably, described upper flange plate 710 and described lower flange plate 720 are annular slab, described platform 400 is arranged with the holding tank 420 arranged around described platform perforate 440, described upper flange plate 710 and described lower flange plate 720 are all located in holding tank 420, prevent the burn into such as Caulis Piperis Kadsurae, sea water from damaging leveling flange part 700, the safety and stability of leveling flange part 700 can be strengthened, extend the service life of leveling flange part 700.Above-mentioned leveling flange part 700 is connected in holding tank 420 by grouting.
This utility model also includes multiple prestress anchorage cable (not shown), the sidewall of described circular cylinder 300 and described conically shaped 200 is equipped with and described prestress anchorage cable anchor cable passage (not shown) one to one, first anchored end 230 the most described with described prestress anchorage cable it is provided with in described conically shaped 200, described platform 400 is provided with the first anchored end 230, with the second anchored end 430 one to one, described prestress anchorage cable one end is anchored in described first anchored end 230, the other end sequentially passes through described conically shaped 200 and the described anchor cable passage of described circular cylinder 300 and is anchored in described second anchored end 430.Multiple described prestress anchorage cables are evenly arranged around described filler passage 500 circumference.Prestress anchorage cable provides prestressing force for whole basis so that basis is in tensioning state all the time, and prevention blower fan tower barrel tilts effectively, it is ensured that fan safe is run.
The outer wall of described conically shaped 200 is additionally provided with sacrificial anode block 210 or corrosion-inhibiting coating, and the connector of sacrificial anode block 210 must be with bar connecting in basis, for the reinforcing bar in basis and the steel construction that is connected with reinforcing bar are carried out effective anticorrosion.As shown in Figure 4, the outer wall of described conically shaped 200 is additionally provided with multiple hanger 220, multiple described hanger 220 circumferences are evenly arranged, and described hanger 220 is all located at the centre of buoyancy absolute altitude of this gravity type foundation, described hanger 220 is for towage or basic in place, use entirety to float and drag mode, use some towboats 20 to carry out towage and transport this gravity type foundation, significantly reduce cost of transportation.
The outer wall of described circular cylinder 300 is additionally provided with by the crashproof component of ship 310 and cat ladder 320, and described platform 400 offers the manhole 410 being positioned at directly over described cat ladder.Circular cylinder 300 described in the utility model can use concrete or steel pipe to make.
This utility model also includes the extra large cable protection pipe 600 being positioned at described filler passage 500; sea cable protection pipe 600 enters filler passage 500 from platform perforate 440; and along the sidewall setting of circular cylinder 300 and conically shaped 200; the sidewall of described conically shaped 200 offers the opening connected with described filler passage 500, and described sea cable protection pipe 600 stretches out described opening.Sea cable 610 is placed in the cable protection pipe 600 of sea, for ensureing the safety of sea cable 610.
As shown in Figure 5 and Figure 6, this utility model additionally provides a kind of basic system, including above-mentioned gravity type foundation and foundation pit 800, the target absolute altitude of described foundation pit 800 excavation is higher than basic target base plate 100 slightly lower, the size of foundation pit 800 and orientation are determined by dominating current direction, generally, the size of foundation pit 800 is about 2~4 times of described gravity type foundation base plate 100 size.Basis sea bed it is provided with in described foundation pit 800, described basis sea bed includes sea bed filter course 910 and is positioned at the sea bed gravel layer 910 above described sea bed filter course 910, basis described in the utility model sea bed overcomes the defect of natural sea bed, improves the safety on basis.Described base plate 100 is fixed on described sea bed gravel layer 910, described sea bed gravel layer 910 is provided with a plurality of gutter 921, for discharging the water of compaction that gravity type foundation produces in sinking watching, prevent water of compaction from basis sea bed being impacted, alleviate basic difficulty in place simultaneously.It is additionally provided with the backfill material 930 for compressing base plate 100 in described foundation pit 800, for ensureing the stability on basis, meets basis antidumping requirement.It is also covered with scour protection layer on backfill material 930; including protection against erosion filter course 940 be positioned at the protection against erosion armour layer 950 above filter course; for preventing the soil body around seawater scouring blower foundation, take away the silt around basis, cause basic slope, bearing capacity to reduce.Preferably, the length of its scour protection layer of side that this gravity type foundation is provided with sea cable 610 outlet is longer.
As it is shown in fig. 7, the construction method of gravity type foundation described in the utility model, mainly include method of construction, way of transportation and component on site construction method, specifically include following steps:
Make other structures such as base plate 100, conically shaped 200, circular cylinder 300 and platform 400 respectively;
According to order from the bottom up successively mounting base 100, conically shaped 200, circular cylinder 300 and platform 400, complete the assembling of this gravity type foundation;
Excavation foundation hole 800, excavates at twice, excavates on a large scale for the first time, and second time is accurately to excavate;
Construction basis sea bed bottom foundation pit 800, point two-layer construction, ground floor is sea bed filter course 910, and the second layer is sea bed gravel layer 910;
By lower for the lifting of this gravity type foundation water, and the overall floating mode dragged is used to be transported at corresponding foundation pit 800;
In this gravity type foundation, fill ballast 960 so that it is be accurately located on the sea bed of basis, specifically, toward perfusion sea water or stone in filler passage 500 time in place, during in place, utilize crane gear to carry out auxiliary and adjust, the strict gradient controlling this basis;
In foundation pit 800, fill backfill material 930, meanwhile, in filler passage 500, lay sea cable 610, and continue to fill up ballast 960;
Construction scour protection layer above backfill material 930, point two-layer construction, ground floor is protection against erosion filter course 940, and the second layer is protection against erosion armour layer 950;
Platform 400 is installed other accessory structures such as leveling flange part 700, loop wheel machine.
It is to be appreciated that the step of the step that assembles of this gravity type foundation above-mentioned and foundation pit 800 excavation is not necessarily the relation successively performed, it is also possible to be to synchronize to perform or first excavation foundation hole 800 carries out making and the assemblings of basic each parts again.
In the present embodiment, the assembling of this gravity type foundation is specifically additionally included on base plate 100 installation dividing plate 150;Dividing plate 150 carries out the steps such as the assembling of conically shaped 200 again after installing.
Above-mentioned gravity type foundation construction method can be effectively improved offshore wind turbine gravity type foundation and build and travelling speed, without underwater grouting, only need to complete on land to assemble, reduce difficulty of construction and cost, this offshore wind turbine gravity type foundation and construction method thereof have economical and safety concurrently, and at sea wind-powered electricity generation field has preferable application prospect.
Each technical characteristic of above example can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, all it is considered to be the scope that this specification is recorded.
Above example only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.

Claims (10)

1. an offshore wind turbine gravity type foundation, it is characterized in that, including loop wheel machine and the base plate of assembly and connection, the first cylinder, the second cylinder and platform successively, described base plate, described first cylinder and described second cylinder connect the filler passage formed for filling ballast, described platform is provided with the platform perforate connected with described filler passage, and described loop wheel machine is installed on described platform.
Offshore wind turbine gravity type foundation the most according to claim 1, it is characterised in that described first cylinder is conically shaped, described second cylinder is circular cylinder.
Offshore wind turbine gravity type foundation the most according to claim 1, it is characterized in that, being provided with the multiple dividing plates standing on described base plate in described filler passage, multiple described dividing plates are connected around axis circumferentially and all inwalls with described first cylinder of described first cylinder.
Offshore wind turbine gravity type foundation the most according to claim 1, it is characterized in that, also include the leveling flange part being located on described platform, described leveling flange part includes lower flange plate that upper flange plate is oppositely arranged with described upper flange plate and organizes securing member more, often organizes described securing member and all includes that two ends are each passed through described upper flange plate and the screw rod of described lower flange plate and coordinate the nut described upper flange plate and described lower flange plate fastened with described screw rod.
Offshore wind turbine gravity type foundation the most according to claim 4, it is characterized in that, described upper flange plate and described lower flange plate are annular slab, described platform is arranged with the holding tank arranged around described platform perforate, described upper flange plate and described lower flange plate are respectively positioned in described holding tank, and the described securing member of many groups is circumferentially.
Offshore wind turbine gravity type foundation the most according to claim 1; it is characterized in that, also including sea cable protection pipe, the sidewall of described first cylinder offers the opening connected with described filler passage; described sea cable protection pipe stretches into described filler passage from described platform perforate, and stretches out from described opening.
Offshore wind turbine gravity type foundation the most according to claim 1, it is characterized in that, also include multiple prestress anchorage cable, the sidewall of described first cylinder and described second cylinder is equipped with and described prestress anchorage cable anchor cable passage one to one, it is provided with in described first cylinder and described prestress anchorage cable the first anchored end one to one, described platform is provided with and described first anchored end the second anchored end one to one, described prestress anchorage cable one end is anchored in described first anchored end, the other end sequentially passes through described first cylinder and the described anchor cable passage of described second cylinder and is anchored in described second anchored end, multiple described prestress anchorage cables are evenly arranged around described filler passage circumference.
Offshore wind turbine gravity type foundation the most according to claim 1, it is characterized in that, the outer wall of described first cylinder is additionally provided with sacrificial anode block or corrosion-inhibiting coating, the outer wall of described first cylinder is additionally provided with multiple hanger, multiple described hanger circumferences are evenly arranged, and described hanger is all located at the centre of buoyancy absolute altitude of this offshore wind turbine gravity type foundation.
9. a basic system, it is characterized in that, including the gravity type foundation as according to any one of claim 1 to 8 and foundation pit, basis sea bed it is provided with in described foundation pit, described basis sea bed includes sea bed filter course and is positioned at the sea bed gravel layer above described sea bed filter course, described base plate is fixed on described sea bed gravel layer, and described sea bed gravel layer is provided with gutter.
Basic system the most according to claim 9; it is characterized in that; being additionally provided with in described foundation pit for backfilling material and being covered in the scour protection layer above described backfill material, described scour protection layer includes protection against erosion filter course and is positioned at the protection against erosion armour layer above filter course.
CN201620327902.0U 2016-04-18 2016-04-18 Marine fan gravity type foundation and basic system Active CN205653811U (en)

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