CN209538210U - A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing - Google Patents

A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing Download PDF

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Publication number
CN209538210U
CN209538210U CN201822015249.6U CN201822015249U CN209538210U CN 209538210 U CN209538210 U CN 209538210U CN 201822015249 U CN201822015249 U CN 201822015249U CN 209538210 U CN209538210 U CN 209538210U
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China
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jacket
several
ontology
wind farm
offshore wind
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CN201822015249.6U
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张成芹
陆梅兴
乌建中
刘璐
王俊杰
黄艳红
刘玉霞
龚权华
赵黎明
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China Jiaotong Sanhang (shanghai) New Energy Engineering Co Ltd
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China Jiaotong Sanhang (shanghai) New Energy Engineering Co Ltd
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Abstract

The utility model discloses a kind of interpolation type offshore wind farm jacket bases for carrying steady pipe casing, entire scheme is mainly by jacket ontology, several steady pipe casings and the cooperation of several supporting legs are constituted, wherein several supporting legs are vertically set on the bottom end of jacket ontology, several steady pipe casings are placed on jacket ontology, and are on same circumference with several supporting legs.Offshore wind farm deep water jacket base case provided by the utility model ensure that the reliability on jacket basis using interpolation type, while carry steady pipe casing, and stake method is constructed after the use of innovation, guarantees steel-pipe pile pile sinking precision, reduce difficulty of construction and construction cost.

Description

A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing
Technical field
The utility model relates to offshore wind farm field technologies, and in particular to offshore wind farm jacket technology.
Background technique
Under the increasingly severe big situation of energy-saving and emission-reduction, reply climate change, energy shortage, the energy safety of supply situation, Offshore wind speed has many advantages, such as that wind-resources are stable, is easy to scale exploitation, currently China is big as a kind of green energy resource Sizable application.
What the built marine wind electric field of China used at present is Offshore Winds, and depth condition is generally less than 10m, branch Bearing structure pattern is mainly High-Rise Pile Cap Foundation, single-pile foundation.With the exploitation of marine wind electric field, wind field offshore distance and the depth of water It is continuously increased, coastal waters conventional infrastructure pattern has been difficult to meet the requirement of deep-sea wind energy development.In the sea of 30m or so depth of water Domain, jacket basis is opposite to possess preferable economic advantages.
The jacket basis that routinely uses is divided into two kinds at present: interpolation type and jacket-type.As shown in Figure 1, interpolation type conduit Frame its be structurally characterized in that the lower leg on jacket basis 11 is inserted into after be located at the stake top of steel-pipe pile 12, supporting leg and steel-pipe pile Between annular space pass through grout filling;As shown in Fig. 2, jacket-type jacket its be structurally characterized in that steel-pipe pile 12 be inserted into conduit In the casing of 11 lower part of frame, pass through grouting connection between casing and steel-pipe pile.
Wherein, interpolation type jacket basis is compared with jacket-type jacket basis, and the two stress conduction pattern is different, interpolation The load on formula jacket basis is directly passed to steel pipe stake top by jacket lower leg, then passes to ground by steel-pipe pile Fixed function is only played in soil, the grouting between supporting leg and steel-pipe pile.And the load on jacket-type jacket basis passes through under jacket Parts casing pipe passes to the grouting between casing and steel-pipe pile, passes to steel-pipe pile by grouting, then pass to foundation soil by steel-pipe pile, Grouting between casing and steel-pipe pile not only acts as fixed function, more to have passed to jacket load.
As a result, at sea in 25 years life cycles of wind-powered electricity generation, the reliability of the grouting of jacket-type jacket is largely determined The validity on basis is determined, therefore the reliability on interpolation type jacket basis is bigger compared with jacket-type jacket basis.
In addition, interpolation type jacket basis is compared with jacket-type jacket basis, the two is also different in construction technology, interpolation Formula jacket basis is first sunk under water on sea bed using first stake method construction and is set steel-pipe pile, then carry out the interpolation peace of jacket Dress;And stake method is constructed after jacket-type jacket uses, i.e., it is existing that jacket basis is placed on sea bed, then steel-pipe pile is inserted into Pile sinking operation is carried out in outer tube.
Wherein, interpolation type jacket basis uses leading underwater pile sinking when being constructed, therefore, it is necessary to be arranged using engineering The relative positional accuracy for guaranteeing the underwater pile sinking of steel-pipe pile is applied, difficulty of construction is higher, and expense is larger.
Utility model content
For the problems of jacket base case used by existing marine wind electric field, a kind of new sea is needed Wind power plant jacket base case.
For this purpose, the purpose of this utility model is to provide a kind of interpolation type offshore wind farm jacket bases for carrying steady pipe casing Thus plinth guarantees the reliability on jacket basis and reduces difficulty of construction.
In order to achieve the above object, the interpolation type offshore wind farm jacket base provided by the utility model for carrying steady pipe casing Plinth, including jacket ontology, several steady pipe casings and several supporting legs, several supporting legs are vertically set on jacket ontology Bottom end, several steady pipe casings are placed on jacket ontology, and are on same circumference with several supporting legs.
Further, the jacket ontology is steel truss structure.
Further, the jacket ontology includes several bracing members pipes, several down tubes, several transition connection sections, with And several mud mats;Be centrosymmetric distribution between several bracing members pipes, and two neighboring bracing members pipe is intersected oblique by multilayer Stay tube connection;Several transition connection sections are corresponding to be arranged above several bracing members pipes, and several mud mats are corresponding It is arranged in the edge of jacket ontology.
Further, the steady pipe casing top is courage jacking mouth structure, and lower part is the cylindrical-shaped structure of middle control.
Further, the steady pipe casing is fixedly connected with jacket ontology by the connecting plate of ribbed plate.
Further, the front end of the supporting leg is provided with pitching pile guide plate.
Offshore wind farm deep water jacket base case provided by the utility model ensure that jacket base using interpolation type The reliability of plinth, while steady pipe casing is carried, stake method is constructed after the use of innovation, is guaranteed steel-pipe pile pile sinking precision, is reduced and apply Work difficulty and construction cost.
Detailed description of the invention
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of existing interpolation type jacket;
Fig. 2 is the structural schematic diagram of existing jacket-type jacket;
Fig. 3 is the structural schematic diagram on interpolation type offshore wind farm jacket basis in the example of the utility model;
Fig. 4 is the structural schematic diagram of jacket ontology in the example of the utility model;
Fig. 5 is the structural schematic diagram of supporting leg in the example of the utility model;
Fig. 6 is the structural schematic diagram of steady pipe casing in the example of the utility model;
Fig. 7 is the distribution schematic diagram of steady pipe casing and supporting leg in the example of the utility model;
Fig. 8 is that state diagram is lifted by crane at jacket ontology scene when the example of the utility model is constructed;
Fig. 9 is that jacket ontology enters mud homeostasis figure when the example of the utility model is constructed;
Figure 10 is the pile sinking operation schematic diagram of open end steel pipe pile when the example of the utility model is constructed;
Figure 11 is the lifting of jacket ontology and alignment figure when the example of the utility model is constructed;
Figure 12 is that jacket ontology is located at the shape body figure on open end steel pipe pile when the example of the utility model is constructed.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.
This example is directed to existing interpolation type jacket or jacket-type the jacket defect present in structure and arrangement and method for construction, A kind of interpolation type offshore wind farm deep water jacket basis for carrying steady pipe casing is designed, is guaranteed by interpolation type connection structure entire The reliability on jacket basis, while being constructed based on stake method after included steady pipe casing realization, guarantee steel-pipe pile pile sinking precision, greatly Width reduces difficulty of construction and construction cost.
Referring to Fig. 3 which shows the interpolation type offshore wind farm deep water jacket base for the included steady pipe casing that this example provides The example of plinth.
As seen from the figure, this carries the interpolation type offshore wind farm deep water jacket basis 100 of steady pipe casing mainly by jacket Ontology 110, several steady pipe casings 120, several supporting legs 130 and several open end steel pipe piles 140, which cooperate, to be constituted.
Referring to fig. 4, jacket ontology 110 constitutes the main element on entire jacket basis 100, and entirety uses steel truss Structure, it is whole that quadrangular frustum pyramid shaped is presented.The jacket ontology 110 is mainly by four angularly disposed bracing members pipes 111, three layers of diagonal brace Pipe 112, several transition connection sections 113, several mud mats 114 and platform 115, which cooperate, to be formed.
Wherein, bracing members pipe 111 is four main stay tubes of jacket ontology, bears and conduct primary load, four steel Support tube is angularly disposed along four direction, overlooks the form that is centrosymmetric.
In addition, variable diameter processing can be used in this bracing members pipe 111 as needed, to improve the convenience of intensity and assembling.
Three layers of down tube 112 connect adjacent two bracing members pipes 111, and every layer of down tube is by two steel pipes intersecting Composition, three layers of 112 axis of down tube are all located at 111 axis of adjacent two bracing members pipes institute in the plane, and the four of bracing members pipe 111 Side is respectively arranged three layers of down tube 112, is connected and constitutes an entirety.
In addition, the down tube 112 in this example is not limited to the three-decker of diagram, the number of plies is according to the practical depth of water, lotus It carries situation to determine, transversely and horizontally stay tube can be increased when necessary.Transversely and horizontally stay tube may be provided at the top of adjacent every layer of down tube 112 End, bottom end and infall, center axis thereof are generally aligned in the same plane with down tube 112, can increase the strong of jacket body construction Degree and stability.
Transition connection section 113 is to be transitioned into blower fan tower barrel form or other structures from jacket basis steel truss structure form The linkage section of form, the mountable blower in top are connected by screw bolts with fan bottom tower, and lower part is connect with platform 115.
This another outer transition connection section 113 can be designed to changeover portion tower form or other transition according to actual functional capability demand Section form, in order to install blower or anemometer tower frame.
Mud mat 114, corresponding to be arranged in jacket four corners, area is carried and is led according to sea bed geology Pipe support weight determines, to guarantee jacket not because too deep from mud is reentried.
The top of jacket ontology 110 is arranged in platform 115, and it is flat to can be used as construction when blower or anemometer tower are installed Platform bears construction load, can be used as instrument and equipment placement platform after installation is complete, is arranged according to actual needs.
110 stable structure of jacket ontology constituted accordingly is reliable, can be good at for installing anemometer tower frame or blower Deng.
Structure type based on jacket ontology 110 in this jacket basis 100, using four supporting legs 130, and this four Corresponding four edges for being vertically and fixedly arranged at 110 bottom of jacket ontology of supporting leg 130, are used to support jacket ontology 110, it is completed at the same time and assigns assembling with open end steel pipe pile 140.
Referring to Fig. 5, the supporting leg 130 in this example mainly includes being open as the opening steel pipe 131 of main body and setting The band pitching pile guide plate 132 at 131 top of steel pipe.As an example, the band pitching pile guide plate 132 is preferably vertical by two pieces of horseshoe shaped plates Intersection is welded, and bottom point facilitates insertion steel-pipe pile.Guide plate 132 of the supporting leg 130 based on front end formed is arranged such It can be in very convenient and fast insertion opening steel-pipe pile 140.
In addition, as needed, which can also use other types steel pipe device.
Structure type based on jacket ontology 110 in this jacket basis 100 is used for using four steady pipe casings 120 Complete the accurate pile sinking operation of open end steel pipe pile 140.
In this way, this four steady pipe casings 120 correspond respectively to four supporting legs 130 and are arranged in jacket ontology referring to Fig. 7 On 110, and be located at four 111 bottom ends of bracing members pipe, and this four steady pipe casings 120 be in four supporting legs 130 it is same In planar circumferential, using only need to vertically lift conduit frame body 110 rotates certain angle after the completion of the positioning piling of steady pipe casing 120 Degree can substantially reduce difficulty of construction in insertion opening steel-pipe pile 140.
Referring to Fig. 6, the steady pipe casing 120 in this example is mainly by eight word bell-mouth structure of air and the lower hollow on top Cylindrical structure cooperate constitute.The steady pipe casing 120 of such structure, hollow cylindrical lower portion and jacket ontology 110 Between can be welded and form a fixed connection by the connecting plate of ribbed plate, but also other fix or dismountable connection types.
Open end steel pipe pile 140 in this jacket basis 100 is as being load load-carrying member, by being arranged in jacket Steady pipe casing 120 on ontology 110 carries out accurate pile sinking, sets so that lower end is heavy to the following supporting course of sea bed, upper end is higher by sea bed Face about 3-5m.Each opening steel pipe foundation pile diameter, wall thickness and length can be according to the wind in practical sea area, wave, stream condition and soil layers Condition determines, and cooperates with supporting leg 130, can hold supporting leg 130 and assign wherein.
Basic 100 overall structures of jacket formed based on above scheme are that interpolation type structure can base in Specific construction Stake method is constructed after included steady pipe casing carries out thereon, has not only guaranteed steel-pipe pile pile sinking precision in this way, but also substantially reduction construction is difficult Degree and construction cost.
The process that stake method is constructed after illustratively this example is carried out for jacket basis 100 below.
Before Specific construction, by the building block on jacket basis 100: jacket ontology 110, several steady pipe casings 120, Several supporting legs 130, several open end steel pipe piles 140 techniques such as are rolled by steel plate in corresponding processing factory, are welded and having made At, and be placed in steady pipe casing 120 is corresponding with supporting leg 130 on jacket ontology 110.
The jacket ontology 110 and open end steel pipe pile 140 that connect integral are transported by dedicated construction ship to sea Upper construction site.
After completing above-mentioned preparation, jacket basis 100 will be ready for and constructed.
Firstly, at sea construction site is mounted with the conduit of pipe casing 120 and supporting leg 130 by the lifting of special floating crane oceangoing ship Frame ontology 110 (as shown in Figure 8), and by jacket ontology 110 directly under be hung to mud face, and directly complete into mud by self weight from steady Operation, entire jacket ontology 110 will be supported (as shown in Figure 9) by the four of its bottom supporting legs 130 at this time.In addition enter It should be selected when mud when tidal current speed is lesser, to reduce the influence of water flow.
Then, open end steel pipe pile 140 is lifted by crane by special floating crane oceangoing ship, open end steel pipe pile 140 is inserted into jacket ontology 110 On steady pipe casing 120 in, open end steel pipe pile 140 is based on from after reentrying mud, is passed through hydraulic impact hammer or hydraulic vibration driver and is carried out Underwater pile sinking is to designed elevation;According to the steady pipe casing 120 being arranged on jacket ontology 110, it is sequentially completed all opening steel pipes 140 underwater pile sinking operations (as shown in Figure 10) of stake.In the pile driving process of entire open end steel pipe pile, 120 pairs of steady pipe casing openings Steel-pipe pile forms good support and guiding role, guarantees the stabilization and reliability of entire pile sinking;Each steady pipe casing simultaneously It is fixed between 120 relative to positional relationship, so that relative to positional relationship between each open end steel pipe pile 140 after pile sinking It is fixed, it ensure that the construction plane precision of the open end steel pipe pile 140 of insertion;Simultaneously because the steady pile protection on jacket ontology 110 Pipe 120 and supporting leg 130 are on same plane circumference, to complete several open end steel pipe piles of pile sinking based on steady pipe casing 120 140 also supporting leg 130 be on same plane circumference, thus can guarantee further conduit frame ontology 110 by its upper supporting leg 130 and opening Mouth steel-pipe pile 140 is directed at and is assigned the convenience of operation.
Then, jacket ontology 120 is lifted by crane by special floating crane oceangoing ship, so that jacket ontology 120 is upwards from opening steel pipe (i.e. so that steady pipe casing 120 thereon is detached from from open end steel pipe pile 140) (as shown in figure 11) is detached from stake 140.
Then, mobile special floating crane oceangoing ship rotates ship direction so that the supporting leg 130 on jacket ontology 120 respectively with Open end steel pipe pile 140 is corresponding, and supporting leg 130 is distinguished in insertion opening steel-pipe pile 140, transfers jacket ontology 110, makes conduit Frame ontology 110 is whole to be located on open end steel pipe pile 140 (as shown in figure 12).
Finally, carrying out the annular space cementing operations between open end steel pipe pile 140 and supporting leg 130.
The construction of offshore wind farm deep water jacket is completed as a result, it is subsequent directly to carry out anemometer tower steel tower or assembling is applied Work.
Originally the interpolation type offshore wind farm deep water jacket base form for carrying steady pipe casing, remains interpolation type offshore wind farm The advantages of deep water jacket high reliablity, while steady pipe casing is carried, facilitate the underwater pile sinking plane precision control of steel-pipe pile Construction control reduces construction cost, is applicable to deepwater environment, and reliability is higher, and Construction precision control is convenient, construction cost It is lower.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (6)

1. a kind of interpolation type offshore wind farm jacket basis for carrying steady pipe casing, which is characterized in that including jacket ontology, if Steady pipe casing and several supporting legs are done, several supporting legs are vertically set on the bottom end of jacket ontology, several steady pile protections Pipe is placed on jacket ontology, and is on same circumference with several supporting legs.
2. interpolation type offshore wind farm jacket according to claim 1 basis, which is characterized in that the jacket ontology is Steel truss structure.
3. interpolation type offshore wind farm jacket basis according to claim 1, which is characterized in that the jacket ontology packet Include several bracing members pipes, several down tubes, several transition connection sections and several mud mats;In being between several bracing members pipes The heart is symmetrical, and two neighboring bracing members pipe is connected by the down tube that multilayer is intersected;Several transition connection sections are corresponding It is arranged above several bracing members pipes, the corresponding edge for being arranged in jacket ontology of several mud mats.
4. interpolation type offshore wind farm jacket basis according to claim 1, which is characterized in that the steady pipe casing top For courage jacking mouth structure, lower part is the cylindrical-shaped structure of middle control.
5. interpolation type offshore wind farm jacket according to claim 1 basis, which is characterized in that the steady pipe casing with lead Pipe support ontology is fixedly connected by the connecting plate of ribbed plate.
6. interpolation type offshore wind farm jacket basis according to claim 1, which is characterized in that the front end of the supporting leg is set It is equipped with pitching pile guide plate.
CN201822015249.6U 2018-12-03 2018-12-03 A kind of interpolation type offshore wind farm jacket basis carrying steady pipe casing Active CN209538210U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111101496A (en) * 2019-12-31 2020-05-05 中交三航(上海)新能源工程有限公司 Construction process for installing deepwater jacket based on attached pile stabilizing device
CN111119224A (en) * 2020-01-22 2020-05-08 张若玮 Electric power wind-resistant anti-oblique cone type pole foundation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111101496A (en) * 2019-12-31 2020-05-05 中交三航(上海)新能源工程有限公司 Construction process for installing deepwater jacket based on attached pile stabilizing device
CN111119224A (en) * 2020-01-22 2020-05-08 张若玮 Electric power wind-resistant anti-oblique cone type pole foundation

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