CN112012238A

CN112012238A - Suction bucket foundation with precast concrete pressing block

Info

Publication number: CN112012238A
Application number: CN202011013774.XA
Authority: CN
Inventors: 陈晓路; 邱旭; 沙浩; 郭小江; 管春雨; 闫姝; 刘溟江; 张波; 姚中原; 朱亚波; 马强
Original assignee: Huaneng Sheyang New Energy Power Generation Co ltd; Huaneng Yancheng Dafeng New Energy Power Generation Co ltd; Huaneng Clean Energy Research Institute; Huaneng Offshore Wind Power Science and Technology Research Co Ltd
Current assignee: Huaneng Sheyang New Energy Power Generation Co ltd; Huaneng Yancheng Dafeng New Energy Power Generation Co ltd; Huaneng Clean Energy Research Institute; Huaneng Offshore Wind Power Science and Technology Research Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2020-12-01
Also published as: WO2022062831A1

Abstract

The invention discloses a suction bucket foundation with precast concrete pressing blocks, which comprises an upper transition section and a lower suction bucket, wherein the upper transition section is arranged at the upper part of the lower suction bucket, and a plurality of precast concrete pressing blocks are arranged on the lower suction bucket. The invention can effectively solve the problems that the prior suction bucket foundation increases the weight of the upper transition section and the whole weight of the suction bucket foundation is improved by directly pouring concrete on the lower bucket body, however, the concrete pouring on the surface of the bucket body takes long time, the maintenance time is long, the occupied space is large, and meanwhile, the prior suction bucket foundation structure needs to improve the whole bending rigidity of the structure by increasing the height of the bucket body, so that the steel quantity of the structure is large.

Description

Suction bucket foundation with precast concrete pressing block

Technical Field

The invention relates to the technical field of offshore wind power supporting structures, in particular to a suction bucket foundation with a precast concrete pressing block.

Background

In the field of offshore wind power, a suction bucket foundation is a common foundation structure form and generally comprises an upper transition section and a lower bucket body, and the suction bucket foundation has the advantages of high bending rigidity, safety, reliability, high construction speed and the like.

The suction bucket foundation needs to bear various natural environment loads such as wind, waves, currents and the like in the using process. To keep the foundation stable without excessive deformation, the foundation itself needs to have a considerable weight. At present, the overall weight of a common suction bucket foundation is improved mainly by increasing the weight of an upper transition section or directly pouring concrete on a lower bucket body. However, it takes long time to pour concrete on the surface of the barrel body, the curing time is long, the occupied space is large, meanwhile, the existing suction barrel foundation structure needs to improve the overall bending rigidity of the structure by increasing the height of the barrel body, and the steel amount of the structure is large.

Disclosure of Invention

In order to solve the technical problems, the invention provides a suction bucket foundation with a precast concrete briquette, which can effectively solve the problems that the existing suction bucket foundation increases the weight of an upper transition section, the whole weight of the suction bucket foundation is improved by directly pouring concrete on a lower bucket body, however, the time for pouring concrete on the surface of the bucket body is long, the maintenance time is long, the occupied area is large, and meanwhile, the existing suction bucket foundation structure needs to improve the whole bending rigidity of the structure by increasing the height of the bucket body, so that the steel quantity of the structure is large.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides a take suction bucket foundation of precast concrete briquetting, includes upper portion changeover portion, lower part suction bucket upper portion sets up the upper portion changeover portion, set up a plurality of precast concrete briquetting on the suction bucket of lower part.

The invention further improves the following steps: and a plurality of reinforced area stirring piles are arranged on the seabed corresponding to the bottom of the lower suction bucket.

The invention further improves the following steps: and a plurality of peripheral area stirring piles are arranged outside the reinforcing area stirring piles.

The invention further improves the following steps: and a circle of stiffening plate is arranged at the joint of the upper transition section and the lower suction barrel.

The invention further improves the following steps: the concrete compact includes a plurality of layers stacked on top of each other.

The invention further improves the following steps: the prefabricated concrete pressing block is fixed on the lower suction bucket through an anchor bolt assembly.

The invention further improves the following steps: the concrete pressing block is of a fan-shaped structure.

The invention further improves the following steps: the anchor bolt assembly comprises an anchor bolt, an anchor plate and a nut, the anchor bolt is used for mutually inserting and connecting and fixing the multi-layer concrete pressing block and the upper surface of the lower suction barrel, and the upper end and the lower end of the anchor bolt are mutually fixed and locked through the anchor plate and the nut respectively.

The invention further improves the following steps: the lower suction barrel comprises a circular suction barrel upper plate and an annular suction barrel side plate, and the circular suction barrel upper plate and the annular suction barrel side plate form a barrel-shaped structure.

The invention further improves the following steps: the barrel-shaped structure is characterized by further comprising a plurality of rectangular suction barrel partition plates, and the rectangular suction barrel partition plates divide the interior of the barrel-shaped structure into a plurality of compartments.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, a plurality of prefabricated dry concrete pressing blocks are fixed on the lower suction barrel, so that the purpose of increasing the weight of the lower suction barrel is achieved, and the technical problems of long time consumption, long maintenance time and large occupied area in the prior art of concrete pouring on the surface of the barrel body are solved.

In the invention, the plurality of reinforced area stirring piles are arranged on the seabed corresponding to the bottom of the lower suction bucket, and the plurality of peripheral area stirring piles are arranged outside the reinforced area stirring piles, so that the rigidity of the foundation is improved, and the aim of reducing the steel amount for the structure is fulfilled.

In the invention, the stiffening plate is welded at the joint of the end part of the upper transition section and the lower suction barrel so as to ensure the structural strength at the joint, and in order to further ensure the stability of the base structure of the suction barrel, the prefabricated concrete pressing block is arranged on the upper plate of the suction barrel of the lower suction barrel, the prefabricated concrete pressing block is connected with the lower suction barrel through a plurality of anchor bolt assemblies, and in order to ensure that the concrete pressing block can be more attached to the upper transition section and the lower suction barrel, the concrete pressing block is integrally in a fan shape and is manufactured in a factory prefabrication mode.

In the invention, a plurality of fan-shaped concrete press blocks can be arranged in a ring shape and arranged on the upper plate of the circular suction barrel of the lower suction barrel foundation, the anchor bolt assembly consists of two anchor plates at the upper part and the lower part and an anchor bolt with two nuts in the middle position, and the concrete press blocks can be fixed with the lower suction barrel by applying prestress in the anchor bolt.

In the invention, the rectangular suction bucket partition plate divides the bucket-shaped structure into a plurality of compartments, and the compartments with smaller areas are convenient for controlling the flatness of the suction bucket foundation in the sinking and positioning process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic view of the connection of the upper transition section, stiffener, lower suction bucket, and concrete compact;

FIG. 6 is a schematic view of the upper transition section, stiffener plate and lower suction bucket connection;

FIG. 7 is a schematic view of the connection of the concrete block to the lower suction bucket;

FIG. 8 is a schematic view of an anchor assembly;

FIG. 9 is a side view of the reinforced area mixing piles, the peripheral area mixing piles and the suction bucket foundation;

FIG. 10 is a top view of the reinforced area mixing piles, the peripheral area mixing piles and the suction bucket foundation.

The method comprises the following steps of 1-upper transition section, 2-concrete pressing block, 3-lower suction barrel, 31-upper suction barrel plate, 32-side suction barrel plate, 33-partition suction barrel plate, 4-anchor bolt assembly, 41-anchor bolt, 42-anchor plate, 43-nut, 5-stiffening plate, 6-reinforced area mixing pile and 7-peripheral area mixing pile.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.

As shown in fig. 1-10, a suction bucket foundation with precast concrete compacts includes an upper transition section 1 and a lower suction bucket 3, the upper transition section 1 is disposed on the upper portion of the lower suction bucket 3, a plurality of dry concrete compacts 2 are disposed on the lower suction bucket 3, a plurality of reinforced mixing piles 6 are disposed on the seabed corresponding to the bottom of the lower suction bucket 3, a plurality of peripheral mixing piles 7 are disposed outside the reinforced mixing piles 6, a circle of stiffening plate 5 is disposed at the joint of the upper transition section 1 and the lower suction bucket 3, the concrete compacts 2 are stacked in multiple layers and fixed on the lower suction bucket 3 through an anchor assembly 4, the concrete compacts 2 are in a fan-shaped structure, the anchor assembly 4 includes an anchor rod 41, an anchor plate 42 and a nut 43, the anchor rod 41 connects and fixes the multiple layers of concrete compacts 2 and the upper surface of the lower suction bucket 3 in an inserting manner, the upper and lower ends of the anchor rod 41 are fixed and locked with each other through the anchor plate 42, the lower suction barrel 3 comprises a circular suction barrel upper plate 31, an annular suction barrel side plate 32 and a plurality of rectangular suction barrel partition plates 33, the circular suction barrel upper plate 31 and the annular suction barrel side plate 32 form a barrel-shaped structure, the rectangular suction barrel partition plates 33 divide the interior of the barrel-shaped structure into a plurality of compartments, and the compartments with smaller areas are convenient for controlling the flatness of the suction barrel foundation in the sinking and positioning process.

The upper transition section 1, the lower suction barrel 3 and the stiffening plate 5 are all made of steel and are welded into a whole in a processing plant on land. Concrete briquetting 2 is the mill prefabrication, and a plurality of concrete briquetting 2 can splice to become the annular and place on lower part suction bucket 3 to improve the whole weight on suction bucket basis, guarantee the stability on basis.

The single concrete pressing block 2 is in a fan shape, and a plurality of (preferably 6) concrete pressing blocks 2 can be spliced into a ring shape and are arranged on the surface of the lower suction bucket 3; the concrete blocks in each sector may be prefabricated in several layers, preferably 2 layers.

When the invention is used, firstly, a reinforced area mixing pile 6 and a peripheral area mixing pile 7 are applied to a seabed at a fan position to reinforce the seabed, meanwhile, an upper transition section 1, a concrete pressing block 2, a lower suction bucket 3, an anchor bolt assembly 4 and a stiffening plate 5 are manufactured in a processing plant on the land, then, a foundation manufactured on the land is transported to the fan position through a barge and is sunk in place through suction, wherein the reinforced area mixing pile 6 and the peripheral area mixing pile 7 both adopt single-shaft cement mixing piles, and the cement mixing amount and the length and the diameter of the mixing piles can be determined according to the field condition.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The utility model provides a take suction bucket foundation of precast concrete briquetting, includes upper portion changeover portion (1), lower part suction bucket (3) upper portion sets up upper portion changeover portion (1), its characterized in that: and a plurality of prefabricated concrete pressing blocks (2) are arranged on the lower suction barrel (3).

2. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: a plurality of reinforced area stirring piles (6) are arranged on the seabed corresponding to the bottom of the lower suction barrel (3).

3. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: and a plurality of peripheral area stirring piles (7) are arranged outside the reinforcing area stirring pile (6).

4. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: and a circle of stiffening plate (5) is arranged at the joint of the upper transition section (1) and the lower suction barrel (3).

5. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: the concrete compact (2) comprises a plurality of layers which are stacked on each other.

6. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: the prefabricated concrete pressing block (2) is fixed on the lower suction barrel (3) through an anchor bolt assembly (4).

7. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: the concrete pressing block (2) is of a fan-shaped structure.

8. The suction bucket foundation of claim 6, characterized in that: anchor bolt sub-assembly (4) include stock (41), anchor slab (42) and nut (43), it is fixed that stock (41) interlude each other with multilayer concrete briquetting (2) and lower part suction bucket (3) upper surface, both ends are fixed the lock each other through anchor slab (42) and nut (43) respectively about stock (41).

9. The suction bucket foundation with precast concrete compact of claim 1, characterized in that: the lower suction barrel (3) comprises a circular suction barrel upper plate (31) and an annular suction barrel side plate (32), and the circular suction barrel upper plate (31) and the annular suction barrel side plate (32) form a barrel-shaped structure.

10. The suction bucket foundation of claim 9, with precast concrete compact, characterized in that: the barrel-shaped structure is characterized by further comprising a plurality of rectangular suction barrel partition plates (33), wherein the rectangular suction barrel partition plates (33) divide the interior of the barrel-shaped structure into a plurality of compartments.