Offshore wind power ribbed steel pipe composite pile

Abstract

The utility model relates to the technical field of pile foundation engineering, in particular to an offshore wind power ribbed steel pipe composite pile which comprises a steel pipe concrete column and cemented soil, the cemented soil is arranged in a soil body of the seabed, the top of the steel pipe concrete column extends out of the sea surface, the bottom of the steel pipe concrete column is inserted into the cemented soil, and the cemented soil is arranged in the soil body. The concrete filled steel tube column comprises an external steel tube and concrete filled in the steel tube, and reinforcing ribs are arranged on the outer surface of the part, located in the cemented soil, of the steel tube. The steel pipe pile foundation has the advantages that the steel pipe can be better combined with cement soil on the outer side through the rib adding measure on the steel pipe, the friction force between the steel pipe and the cement soil is greatly increased, and the capacity of the pile foundation for resisting interface damage of the steel pipe and the cement soil is reduced; the method can be widely applied to offshore wind power foundations.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation engineering, in particular to an offshore wind power ribbed steel pipe composite pile. Background Art

[0002] At present, domestic offshore wind power foundations generally use steel pipe piles and steel pipe concrete mixing composite piles. The outside of the steel pipes are all smooth steel pipe walls, and the friction with the outside is limited. Summary of the Invention

[0003] The purpose of this utility model is to provide an offshore wind power ribbed steel pipe composite pile based on the above-mentioned deficiencies of the existing technology. Ribbing measures are set on the steel pipe wall to enable the steel pipe to be better combined with the outer cement soil, greatly increase the friction between the steel pipe and the cement soil, and reduce the possibility of pile foundation damage at the interface between the steel pipe and the cement soil.

[0004] The purpose of this utility model is achieved by the following technical solutions:

[0005] An offshore wind power ribbed steel pipe composite pile, characterized in that it includes a steel tube concrete column and cement soil, wherein the cement soil is set in the soil of the seabed, the top of the steel tube concrete column protrudes above the sea surface, and the bottom of the steel tube concrete column is inserted into the cement soil. The steel tube concrete column includes an external steel pipe and concrete filled in the steel pipe, and the outer surface of the steel pipe located in the cement soil is provided with ribs.

[0006] The ribs are made of one or more of steel plates, blades, annular steel bars, and stirring blades.

[0007] The steel tube concrete column and the cement soil are both arranged at an inclined angle and are concentric.

[0008] When a plurality of the concrete-filled steel tube columns are included, the concrete-filled steel tube columns are connected and fixed by trusses to form an integral structure.

[0009] The tops of the plurality of concrete-filled steel tube columns jointly support the pedestal.

[0010] The advantages of this utility model are: the ribbed measures on the steel pipe enable the steel pipe to be better combined with the outer cement soil, greatly increase the friction between the steel pipe and the cement soil, and reduce the ability of the pile foundation to resist damage to the interface between the steel pipe and the cement soil; it can be widely used in offshore wind power foundations. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a detailed structural diagram of the utility model. DETAILED DESCRIPTION

[0013] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

[0014] like Figure 1-2 As shown in the figure, marks 1-10 respectively represent: steel tube concrete column 1, truss 2, rib 3, steel tube 4, concrete 5, ribbed steel tube composite pile 6, cement soil 7, foundation 8, wind turbine tower 9, and mixing head 10.

[0015] Example: Figure 1 and Figure 2 As shown, the offshore wind power ribbed steel tube composite pile in this embodiment includes a steel tube concrete column 1 and a cement soil 7, which together constitute a composite pile. Specifically, the cement soil 7 is set in the soil below the seabed and is applied through a mixing pile construction process. A mixing head 10 is provided at the bottom of the steel tube concrete column 1, which is used to achieve the mixing process of the cement soil 7; the bottom of the steel tube concrete column 1 is inserted into the cement soil 7, and its top extends above the sea surface. In this embodiment, the steel tube concrete column 1 and the cement soil 7 are arranged concentrically.

[0016] The steel tube concrete column 1 comprises a steel tube 4 and concrete 5 filled therein, which together increase the bearing capacity of the pile foundation and further form a ribbed steel tube composite pile 6. Ribs 3 are provided on the outer surface of the steel tube 4 located within the cement soil 7. These ribs 3 can be made of a variety of ribs, such as steel plates, blades, circumferential steel bars, and stirring sheets. These ribs enhance the bond between the steel tube 4 and the cement soil 7, significantly increasing the friction between the two and reducing the possibility of pile foundation failure at the interface between the steel tube and the cement soil.

[0017] like Figure 1 As shown, in this embodiment, multiple concrete-filled steel tube columns 1 are provided, and corresponding cement soil 7 is provided at the bottom of each concrete-filled steel tube column 1. Trusses 2 are provided between the multiple concrete-filled steel tube columns 1, and the concrete-filled steel tube columns 1 are connected and fixed by the trusses 2 to form an integral structure, further increasing the bearing capacity and stability of the pile foundation.

[0018] A cap 8 is provided above the plurality of concrete-filled steel tube columns 1, and the cap 8 is supported by the plurality of concrete-filled steel tube columns 1. A wind turbine tower 9 is provided above the cap 8.

[0019] Although the above embodiments have described the concepts and embodiments of the present invention in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described here one by one.

Claims

1. An offshore wind power ribbed steel pipe composite pile, characterized by: The invention comprises a steel tube concrete column and cement soil, wherein the cement soil is set in the soil of the seabed, the top of the steel tube concrete column protrudes above the sea surface, and the bottom of the steel tube concrete column is inserted into the cement soil. The steel tube concrete column comprises an external steel pipe and concrete filled in the steel pipe, and the outer surface of the steel pipe located in the cement soil is provided with ribs.

2. The offshore wind power ribbed steel pipe composite pile according to claim 1, characterized in that: The ribs are made of one or more of steel plates, blades, annular steel bars, and stirring blades.

3. The offshore wind power ribbed steel pipe composite pile according to claim 1, characterized in that: The steel tube concrete column and the cement soil are both arranged at an inclined angle and are concentric.

4. The offshore wind power ribbed steel pipe composite pile according to claim 1, characterized in that: When a plurality of the concrete-filled steel tube columns are included, the concrete-filled steel tube columns are connected and fixed by trusses to form an integral structure.

5. The offshore wind power ribbed steel pipe composite pile according to claim 4, characterized in that: The tops of the plurality of concrete-filled steel tube columns jointly support the pedestal.

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