CN215211137U

CN215211137U - Offshore wind power suction type jacket foundation structure

Info

Publication number: CN215211137U
Application number: CN202121099157.6U
Authority: CN
Inventors: 贺正兴; 甘毅; 张金福; 许秋声; 杨伟华; 胡雪扬
Original assignee: Fujian Provincial Investigation Design & Research Institute Of Water Conservancy And Hydropower
Current assignee: Fujian Water Resources And Hydropower Survey Design And Research Institute Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-12-17
Anticipated expiration: 2031-05-21

Abstract

The utility model relates to a marine wind power suction formula jacket foundation structure, including the suction stake that is used for installing the jacket, the circumference has set firmly a plurality of vertical reinforcing plates on the stake wall of suction stake. The vertical reinforcing plates are fixedly arranged on the circumference of the pile wall of the original designed suction pile, so that the rigidity of the suction pile is improved, the bearing capacity of a foundation is improved, and the requirement of large-capacity wind turbine generator load on the market is met. The transverse span of the jacket and the size of the central suction pile are unchanged, a larger marine transportation barge is not needed, and the marine transportation cost is reduced. Under the condition that the safe distance between the fan installation vessel and the foundation is guaranteed to be unchanged, more fan installation vessels can be selected in the market.

Description

Offshore wind power suction type jacket foundation structure

Technical Field

The utility model relates to a marine wind power suction formula jacket foundation structure belongs to ocean engineering and wind power generation's technical field.

Background

Wind energy is one of the most mature, most scaled development conditions and commercial development prospects of the technology in the field of new energy as an efficient and clean energy. At present, offshore wind power foundations are various in types, wherein suction type jacket foundations are still in an attempt stage in the construction of China, but the suction type jacket foundations have wide prospects due to the advantages of convenience and rapidness in construction, small overall engineering investment, rapidness and simplicity in installation, low construction noise, simplicity and convenience in recovery, short design length of suction piles and the like.

The lower part of the traditional suction type jacket foundation is a suction pile (tube), the upper part of the traditional suction type jacket foundation is a jacket, and the foundation is installed on a designed elevation in a mode of pumping negative pressure into the pile (tube). The method is suitable for geological conditions with large water depth and soft soil within the range of 20m below the mud surface.

However, with the continuous update of large-capacity fan sets, the fan load is larger and larger, and according to the design idea of the traditional suction type jacket foundation, if the fan load is increased, the transverse span of the root part of the jacket is increased, and the diameter and the height of a suction pile (tube) are increased. The increase in the transverse span at the root of the jacket requires an increase in the draft and width of the transport barges, and the number of transport barges on the market that can meet the design requirements is dramatically reduced. The diameter and the height of the suction pile (cylinder) are increased, the processing and manufacturing difficulty of the suction pile (cylinder) is increased, the offshore transportation cost is increased, and the offshore hoisting and negative pressure installation difficulty is increased. Meanwhile, the diameter of the suction pile (tube) is increased, and the number of the fan installation ships which can be selected in the market is reduced under the condition that the safe distance between the fan installation ship and the foundation is not changed. Therefore, the modification of the conventional suction type jacket foundation (suction pile) to meet the operation requirement of the high-capacity wind turbine generator set becomes a key problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a marine wind power suction formula jacket foundation structure is provided, not only simple structure, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides an offshore wind power suction formula jacket foundation structure, includes the suction stake that is used for installing the jacket, and the circumference sets firmly a plurality of vertical reinforcing plates on the pile wall of suction stake.

Preferably, a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall or the outer pile wall of the suction pile.

Preferably, a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall and the outer pile wall of the suction pile at the periphery, and the vertical reinforcing plates of the inner pile wall and the outer pile wall are arranged in a staggered mode or in a one-to-one correspondence mode.

Preferably, the vertical reinforcing plate is evenly provided with a plurality of weight reducing through holes, and the bottom end of the vertical reinforcing plate is provided with a chamfer angle for reducing the sinking resistance of the negative pressure.

Preferably, a plurality of top cover reinforcing plates are uniformly distributed on the circumference of the inner bottom surface of the top cover of the suction pile, weight reducing through holes are formed in the top cover reinforcing plates, arc-shaped notches are formed in the bottom edges of the top cover reinforcing plates, and the diameters of the notches are equal to the width of the top cover reinforcing plates.

Preferably, a guide plate is fixedly arranged on the outer periphery of the top cover, and the guide plate inclines outwards from top to bottom to form an umbrella shape.

Preferably, a vertical flow isolating ring plate facing downwards is fixedly arranged on the periphery of the flow guide plate.

Preferably, the guide plate is provided with a plurality of mud overflow holes, the plurality of mud overflow holes are distributed in a plurality of circles around the middle part of the guide plate, the number of the mud overflow holes on the outer circle is large, and the number of the mud overflow holes on the inner circle is small.

Compared with the prior art, the utility model discloses following beneficial effect has: the vertical reinforcing plates are fixedly arranged on the circumference of the pile wall of the original designed suction pile, so that the rigidity of the suction pile is improved, the bearing capacity of a foundation is improved, and the requirement of large-capacity wind turbine generator load on the market is met. The transverse span of the jacket and the size of the central suction pile are unchanged, a larger marine transportation barge is not needed, and the marine transportation cost is reduced. Under the condition that the safe distance between the fan installation vessel and the foundation is guaranteed to be unchanged, more fan installation vessels can be selected in the market.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a top view of a distribution of vertical stiffeners.

Fig. 3 is another top view of the vertical stiffener.

Fig. 4 is a top view of an embodiment of the present invention (vertical stiffener not shown).

Fig. 5 is a schematic view of a conventional suction jacket.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1 to 5, the embodiment provides a marine wind power suction type jacket foundation structure, which includes a suction pile 2 for installing a jacket 1, and a plurality of vertical reinforcing plates 3 are fixedly arranged on the circumference of the pile wall of the suction pile. Under the condition that the size of the original suction pile of the suction jacket foundation is unchanged, a plurality of vertical reinforcing plates are fixedly arranged on the upper circumference of the original suction pile so as to meet the requirements of bearing capacity of a foundation, structural anti-overturning and soil body anti-scouring, and finally the purpose of improving the capacity of a single machine is achieved.

In an embodiment of the present invention, a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall or the outer pile wall of the suction pile.

In another embodiment of the present invention, a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall and the outer pile wall of the suction pile, and the vertical reinforcing plates of the inner pile wall and the outer pile wall are arranged in a staggered manner or in a one-to-one correspondence.

The embodiment of the utility model provides an in, under the prerequisite of guaranteeing structure safety, equal vertical equipartition has a plurality of to subtract heavy through-hole 4 on the vertical reinforcing plate, reduces basic gross weight, and vertical reinforcing plate top does not set up the chamfer, and the bottom of vertical reinforcing plate all is equipped with chamfer 5 for reduce the submerged resistance of negative pressure.

The embodiment of the utility model provides an in, the interior bottom circumference equipartition of top cap 11 of suction stake has a plurality of top cap reinforcing plates 6, all is equipped with on the top cap reinforcing plate and subtracts heavy through-hole, and the base of top cap reinforcing plate all has convex breach 7, and the diameter of breach equals the width of top cap reinforcing plate. On one hand, the rigidity of the top cover is ensured, and on the other hand, the penetration quality is ensured.

In the embodiment of the present invention, the flow guiding plate 8 is fixedly disposed on the outer periphery of the top cover, and the flow guiding plate is inclined from top to bottom to outside to form an umbrella shape. The anti-overturning capability of the suction pile can be improved. Set up certain slope for have the water conservancy diversion ability, the scour prevention function.

In the embodiment of the present invention, a downward vertical flow-isolating ring plate 9 is fixedly arranged on the outer periphery of the flow-guiding plate. After the vertical flow isolating ring plate enters the soil, the water body can be further prevented from entering the bottom in the guide plate to wash the soil body. Wherein, the mud surface position is located the middle part near region of guide plate.

The embodiment of the utility model provides an in, be equipped with a plurality of mud overflow hole 10 on the guide plate, a plurality of mud overflow hole is along the middle part of guide plate toward being a plurality of circles around and distributing, and wherein the quantity in outer lane mud overflow hole is many, and the quantity in inner circle mud overflow hole is few. The number of circles of the plurality of mud overflow holes arranged from outside to inside is not less than 2 circles, and the circles are staggered at intervals by a certain angle. The setting of excessive mud floating hole on the one hand controls unnecessary mud floating and overflows the guide plate, guarantees that the suction stake sinks smoothly and runs through in place, and on the other hand alleviates suction stake total weight, reduces and hangs heavy weight.

The working principle of the offshore wind power suction type jacket foundation structure is as follows: the vertical reinforcing plates are fixedly arranged on the circumference of the pile wall of the original designed suction pile, so that the rigidity of the suction pile is improved, the bearing capacity of a foundation is improved, and the requirement of large-capacity wind turbine generator load on the market is met. The transverse span of the jacket and the size of the central suction pile are unchanged, a larger marine transportation barge is not needed, and the marine transportation cost is reduced. Under the condition that the safe distance between the fan installation vessel and the foundation is guaranteed to be unchanged, more fan installation vessels can be selected in the market.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides an offshore wind power suction formula jacket foundation structure which characterized in that: comprises a suction pile for installing a jacket, wherein a plurality of vertical reinforcing plates are fixedly arranged on the circumference of the pile wall of the suction pile.

2. The offshore wind power suction jacket foundation structure of claim 1, wherein: and a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall or the outer pile wall of the suction pile.

3. The offshore wind power suction jacket foundation structure of claim 1, wherein: a plurality of vertical reinforcing plates are uniformly distributed on the inner pile wall and the outer pile wall of the suction pile at the periphery, and the vertical reinforcing plates of the inner pile wall and the outer pile wall are arranged in a staggered mode or in a one-to-one correspondence mode.

4. An offshore wind power suction jacket foundation structure according to any of claims 1-3, characterised in that: a plurality of weight reducing through holes are uniformly and vertically distributed on the vertical reinforcing plate, and chamfers are arranged at the bottom end of the vertical reinforcing plate to reduce the sinking resistance of the negative pressure.

5. An offshore wind power suction jacket foundation structure according to any of claims 1-3, characterised in that: a plurality of top cover reinforcing plates are uniformly distributed on the circumference of the inner bottom surface of the top cover of the suction pile, weight reducing through holes are formed in the top cover reinforcing plates, arc-shaped notches are formed in the bottom edges of the top cover reinforcing plates, and the diameter of each notch is equal to the width of each top cover reinforcing plate.

6. Offshore wind power suction jacket foundation structure according to claim 5, characterized by: the periphery of the top cover is fixedly provided with a guide plate, and the guide plate inclines outwards from top to bottom to form an umbrella shape.

7. The offshore wind power suction jacket foundation structure of claim 6, wherein: the periphery of the guide plate is fixedly provided with a vertical flow isolating ring plate which faces downwards.

8. The offshore wind power suction jacket foundation structure of claim 6, wherein: the guide plate is provided with a plurality of mud overflow holes which are distributed along the middle part of the guide plate in a plurality of circles around, wherein the number of the mud overflow holes on the outer circle is large, and the number of the mud overflow holes on the inner circle is small.