CN217710826U

CN217710826U - Offshore wind power pile foundation scouring protection composite structure

Info

Publication number: CN217710826U
Application number: CN202123059607.1U
Authority: CN
Inventors: 周国兴; 朱亮; 雷传; 沙欣宇; 张震宇
Original assignee: PowerChina Huadong Engineering Corp Ltd
Current assignee: PowerChina Huadong Engineering Corp Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-11-01
Anticipated expiration: 2031-12-07

Abstract

The utility model provides an offshore wind power pile foundation erodees protection composite construction, including sand bag, sand quilt, overburden and erode the protection pad, the sand bag is filled and is erodeed around the wind-powered electricity generation single pile and take away the hole, and sand is laid on the sea bed surface around sand bag and wind-powered electricity generation single pile, and the overburden hydraulic reclamation is gone up in sand quilt, erodees the protection pad and lays on sand quilt and overburden surface. The utility model discloses can effectively solve the secondary and erode the problem, reduce rivers and to the scouring action on basis, can not produce the injury to major structure.

Description

Offshore wind power pile foundation scouring protection composite structure

Technical Field

The utility model relates to a marine pile foundation protection technical field, concretely relates to marine wind power pile foundation erodees protection composite construction.

Background

At present, the foundation form of offshore wind power is mostly single-pile foundation, and the pile diameter is often great moreover for rivers form the swirl after meeting the single-pile, and the swirl can erode the sea bed surface around the single-pile and form and erode the hole. The formation that erodees the hole can make the vertical bearing capacity of single pile foundation and the great decline of horizontal bearing capacity, causes great threat to wind-powered electricity generation safety, consequently, in order to guarantee the permanent safe operation of wind-powered electricity generation, need adopt scour prevention safeguard measure to wind-powered electricity generation single pile foundation.

The above prior art solutions have the following drawbacks: the existing anti-scouring protection measures for the offshore wind power single pile foundation mainly comprise a sand bag and riprap protection method. The riprap method is easy to damage the single pile due to improper operation in the riprap process, the sand bag and riprap protection edge are easy to generate secondary scouring, and the scouring prevention effect of the sand bag and riprap protection edge on the strong scouring sea area is poor.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model aims to provide an offshore wind power pile foundation erodees protection composite construction. The utility model discloses can effectively solve the secondary and erode the problem, reduce rivers and to the scouring action on basis, can not produce the injury to major structure.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

offshore wind power pile foundation erodees protection composite construction, its characterized in that: the wind power single pile scouring protection device comprises a sand bag, a sand quilt, a covering layer and a scouring protection pad, wherein the sand bag is filled in a scouring pit around a wind power single pile, the sand quilt is laid on a sea bed surface around the sand bag and the wind power single pile, the covering layer is filled on the sand quilt in a blowing mode, and the scouring protection pad is laid on the surfaces of the sand quilt and the covering layer.

Further: the scouring protection pad is composed of a plurality of tires arranged in a matrix form, and nylon ropes are arranged among the tires in a penetrating mode to be connected and fixed.

Further: the plurality of tires are connected by penetrating nylon ropes in the longitudinal direction and the transverse direction.

Further: the size of the scouring protection pad is matched with that of the sand quilt, the scouring protection pad covers the surfaces of the sand quilt and the covering layer, a hole matched with the pile diameter of the wind power single pile is formed in the center of the scouring protection pad, and the size of the hole can be matched with the outer diameter of the wind power single pile.

Further: the paving range of the sand quilt is 4-8 times of the pile diameter of the wind power single pile.

And further: the covering layer forms a cone frustum shape under the self-flowing action.

And further: the covering layer is solidified soil.

And further: the coverage range of the covering layer is 2-3 times larger than the pile diameter of the wind power single pile.

And further: the sand quilt is laid on a seabed affected by scouring around the wind power single pile, and the laying range of the sand quilt is determined according to the pile diameter of the wind power single pile and the ocean current condition.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the utility model discloses in adopt the overburden of solidification soil can be according to self the nature of flowing closely in wind-powered electricity generation single pile, effectively solve the accuracy control problem, and can not produce the injury to major structure. Solidified soil can closely laminate in wind-powered electricity generation single pile, and solidified soil has higher compressive strength, and the husky ability reinforce of scour protection can effectively solve the secondary and erode the problem. The utility model discloses the tire that erodees in the protection pad can differentiate rivers direction of motion, reduces the velocity of water flow, and silt in the rivers is piled up gradually between the tire, finally realizes the effect that the protection seabed prevents to erode.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a top view of the scouring protection pad of the present invention.

Reference numerals: 1. a sand bag; 2. a sand quilt; 3. a cover layer; 4. washing the protection pad; 5. a tire; 6. a nylon cord; 7. wind power single pile.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the following preferred embodiments of the present invention are described in connection with specific examples, but it should be understood that the drawings are illustrative only and should not be construed as limiting the present invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting the invention.

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

As shown in fig. 1 to 3, the offshore wind power pile foundation scouring protection composite structure comprises a sand bag 1, a sand quilt 2, a covering layer 3 and a scouring protection pad 4, wherein the sand bag 1 is filled in a scouring pit around a wind power single pile 7, the sand quilt 2 is laid on the sea bed surface around the sand bag 1 and the wind power single pile 7, the covering layer 3 is filled on the sand quilt 2 in a blowing mode, and the scouring protection pad 4 is laid on the surfaces of the sand quilt 2 and the covering layer 3. The sand bag 1 and the sand quilt 2 are sewn by adopting polyester filament yarn woven geotechnical model bags, the filling materials of the sand bag 1 and the sand quilt 2 adopt medium-coarse sand with the permeability coefficient not less than 10-3cm/s, the grain diameter d is required to be between 0.2 and 0.63mm, and the sand filling plumpness is 80 percent.

Scour protection pad 4 comprises a plurality of tires 5 that are the matrix and arrange, wears to be equipped with nylon rope 6 between a plurality of tires 5 and connects fixedly, and a plurality of tires 5 are all worn to be equipped with nylon rope 6 at vertical and horizontal direction and are connected. The two ends of the nylon rope are respectively fixedly connected with the tires 5 at the two ends of the scouring protection pad 4 in the longitudinal direction or the transverse direction.

The size of the scouring protection pad 4 is matched with that of the sand quilt 2, the scouring protection pad 4 covers the sand quilt 2 and the covering layer 3, a hole matched with the pile diameter of the wind power single pile 7 is formed in the center of the scouring protection pad 4, and the size of the hole can be matched with the outer diameter of the wind power single pile 7.

The paving range of the sand quilt 2 is 4-8 times of the pile diameter of the wind power single pile 7.

The covering layer 3 forms a truncated cone shape under the self-flowing action.

The covering layer 3 is solidified soil. The solidified soil is prepared by mixing silt, water and a curing agent according to a certain proportion. The solidified soil is filled on the sand quilt 2 by blowing, and a covering layer 3 with the height of about 0.8m and the natural slope ratio of more than 1.

The coverage range of the covering layer 3 is 2-3 times larger than the pile diameter of the wind power single pile 7.

The sand quilt 2 is laid on a seabed affected by scouring around the wind power single pile 7, and the laying range of the sand quilt 2 is determined according to the pile diameter of the wind power single pile 7 and the ocean current condition.

According to the utility model discloses a description and attached drawing, technical personnel in the field make or use very easily the utility model discloses a marine wind power pile foundation erodees protection composite construction, and can produce the utility model discloses the positive effect that records.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the technical matters of the present invention are all within the protection scope of the present invention for any simple modification and equivalent change of the above embodiments.

Claims

1. Offshore wind power pile foundation erodees protection composite construction, its characterized in that: including sand bag (1), sand by (2), overburden (3) and erode protection pad (4), sand bag (1) is filled and is washed the hole around wind-powered electricity generation single pile (7), and sand is laid by (2) on sand bag (1) and wind-powered electricity generation single pile (7) sea bed surface around, and overburden (3) blow pack is laid on sand by (2), erodes protection pad (4) and lays on sand by (2) and overburden (3) surface.

2. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the scouring protection pad (4) is composed of a plurality of tires (5) arranged in a matrix form, and nylon ropes (6) are arranged between the tires (5) in a penetrating mode to be connected and fixed.

3. The offshore wind power pile foundation scouring protection composite structure of claim 2, characterized in that: the plurality of tires (5) are connected by penetrating nylon ropes (6) in the longitudinal direction and the transverse direction.

4. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: scour and protect the size of pad (4) and sand by the size phase-match of (2), scour and protect pad (4) and cover on the surface of sand by (2) and overburden (3), scour and protect pad (4) center set up with wind-powered electricity generation single pile (7) stake footpath assorted hole, the size of hole can be with the external diameter phase-match of wind-powered electricity generation single pile (7).

5. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the paving range of the sand cover (2) is 4-8 times of the pile diameter of the wind power single pile (7).

6. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the covering layer (3) forms a truncated cone shape under the self-flowing action.

7. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the covering layer (3) is solidified soil.

8. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the coverage range of the covering layer (3) is 2-3 times larger than the pile diameter of the wind power single pile (7).

9. The offshore wind power pile foundation scouring protection composite structure of claim 1, wherein: the sand quilt (2) is laid on the seabed affected by scouring around the wind power single pile (7).