Ocean engineering group tenon grouting connection section with excellent fatigue performance

Abstract

The invention discloses an ocean engineering group tenon grouting connection section with excellent fatigue performance, and relates to the field of offshore wind power and ocean platforms. The grouting connection section comprises a main pipe, an auxiliary pipe, a main pipe perforated steel plate, an auxiliary pipe perforated steel plate, a steel plate round hole and slurry. When being applied to ocean engineering grouting connection sections such as offshore wind power and ocean platforms, the fatigue performance of the ocean engineering grouting connection sections in the air and water flow environment can be effectively improved, meanwhile, the trepanned steel plates limit shrinkage of slurry, high-performance grouting materials which are high in price can be replaced with high-strength concrete which is low in price, and the construction cost is reduced. And basic technical support is provided for promoting ocean engineering development of offshore wind power, ocean platforms and the like in China.

Description

Technical Field

[0001] The present invention relates to the fields of offshore wind power and ocean platforms. Background Art

[0002] Driven by domestic and international policies, the global new energy industry has developed rapidly. Offshore wind power has become a key development direction in China because it does not occupy arable land and has little impact on human life due to noise. However, at present, the grouting connection section with circumferential shear keys in the offshore wind power field has the problem of low fatigue performance, especially a sharp decline in fatigue performance in the water flow environment. At present, it mainly relies on the sealing measures of the grouting connection section. With the accumulation of the service life of offshore wind turbines, the reliability of the sealing system shows a time-varying degradation characteristic, resulting in a significant increase in the risk of safe operation of wind power structures.

[0003] The perforated steel plate connector and concrete form a concrete tenon to provide resistance, and the fatigue performance is excellent. The perforated steel plate connector only generates cracks when it approaches the peak value, and its force mechanism and failure mode are different from those of the grouting connection section of offshore wind power with circumferential shear members. Therefore, applying the perforated steel plate connector to the offshore wind power support structure will bring a series of excellent effects. Summary of the Invention

[0004] Technical Problem: At present, the grouting connection section with circumferential shear keys in the fields of offshore wind power and ocean platforms has poor fatigue performance, especially the problem of a sharp decline in fatigue performance in the water flow environment.

[0005] Technical Solution: The object of the present invention can be achieved by the following technical solutions: An offshore engineering group tenon grouting connection section with excellent fatigue performance, comprising a main pipe (1), an auxiliary pipe (2), a main pipe perforated steel plate (3), an auxiliary pipe perforated steel plate (4), a steel plate round hole (5) and a slurry (6).

[0006] Further, in the above-mentioned offshore engineering group tenon grouting connection section with excellent fatigue performance, longitudinal main pipe perforated steel plates (3) and auxiliary pipe perforated steel plates (4) are respectively welded on the inner wall of the main pipe (1) and the outer wall of the auxiliary pipe (2).

[0007] Further, in an offshore wind power group tenon grouting connection section with excellent fatigue performance, the auxiliary pipe (2) can be located outside the main pipe (1). At this time, the auxiliary pipe perforated steel plate (4) is arranged inside the auxiliary pipe (2), and the main pipe perforated steel plate (3) is arranged outside the main pipe (1).

[0008] Further, in an offshore wind power group tenon grouting connection section with excellent fatigue performance, the main pipe perforated steel plates (3) and the auxiliary pipe perforated steel plates (4) on the inner wall of the main pipe (1) and the outer wall of the auxiliary pipe (2) can be aligned and misaligned.

[0009] Furthermore, in the above-mentioned marine wind power group tenon grouting connection section with excellent fatigue performance, the sizes of the main pipe opening steel plate (3) on the inner wall of the main pipe (1) and the auxiliary pipe opening steel plate (4) on the outer wall of the auxiliary pipe (2) can be different, and the specific sizes are configured according to the bearing capacity requirements.

[0010] Furthermore, in the above-mentioned marine wind power group tenon grouting connection section with excellent fatigue performance, the grout (6) can be high-performance grouting material or high-strength concrete.

[0011] Beneficial effects: The present invention has the following advantages compared with the prior art:

[0012] (1) The marine engineering group tenon grouting connection section with excellent fatigue performance disclosed by the present invention relies on the grout tenons formed by the opening steel plates and the grout to provide bearing capacity, and has excellent fatigue performance in the air environment and water flow environment. It is particularly suitable for the transition sections of marine wind power and offshore platforms where it is difficult to apply sealing measures, and can significantly reduce the comprehensive cost. In addition, the excellent fatigue performance is of great significance for extending the service life of marine wind turbines and offshore platform structures, and will bring huge economic benefits.

[0013] (2) The opening steel plates in the marine engineering group tenon grouting connection section with excellent fatigue performance disclosed by the present invention limit the shrinkage effect of the grout, and high-strength concrete can be used to replace expensive high-performance grouting materials. Description of the drawings

[0014] Figure 1 It is a longitudinal sectional view of the present invention;

[0015] Figure 2 It is a schematic diagram of the main pipe located inside the auxiliary pipe;

[0016] Figure 3 It is a schematic diagram of welded connection;

[0017] Figure 4 It is a schematic diagram of the main pipe opening steel plate facing the auxiliary pipe opening steel plate;

[0018] Figure 5 It is a schematic diagram of the main pipe opening steel plate misaligned with the auxiliary pipe opening steel plate;

[0019] Figure 6 It is the situation where the sizes of the main pipe opening steel plate and the auxiliary pipe opening steel plate are inconsistent;

[0020] Figure 7 It is an explanatory diagram of the configuration quantity of the main pipe opening steel plate and the auxiliary pipe opening steel plate of the present invention;

[0021] In the figure: 1 - main pipe, 2 - auxiliary pipe, 3 - main pipe opening steel plate, 4 - auxiliary pipe opening steel plate, 5 - steel plate round hole, 6 - grout. Specific implementation manners

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] As Figure 1 shown, a marine engineering group tenon grouting connection section with excellent fatigue performance relates to the fields of offshore wind power and marine engineering. The grouting connection section includes a main pipe (1), an auxiliary pipe (2), a main pipe perforated steel plate (3), an auxiliary pipe perforated steel plate (4), a steel plate round hole (5), and a slurry (6).

[0024] As Figure 2 shown, in the marine engineering grouting connection section with excellent fatigue performance, the auxiliary pipe (2) can be located outside the main pipe (1). At this time, the auxiliary pipe perforated steel plate (4) is arranged inside the auxiliary pipe (2), and the main pipe perforated steel plate (3) is arranged outside the main pipe (1).

[0025] As Figure 3 shown, the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) are connected to the main pipe (1) and the auxiliary pipe (2) through fillet welds.

[0026] As Figure 4 shown, the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) in the marine engineering grouting connection section with excellent fatigue performance are facing each other.

[0027] As Figure 5 shown, the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) in the marine engineering grouting connection section with excellent fatigue performance are offset.

[0028] As Figure 6 shown, the sizes of the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) in the marine engineering grouting connection section with excellent fatigue performance can be different.

[0029] As Figure 7 shown, the numbers of the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) in the marine engineering grouting connection section with excellent fatigue performance are configured according to the bearing capacity requirements.

[0030] The above are only the preferred implementation schemes of the present invention, but the present invention is not limited to the above specific implementation schemes. Without departing from the principle of the present invention, those of ordinary skill in the art can also make several modifications, supplements, or use similar methods for substitution, which should also be regarded as the protection scope of the present invention.

[0031] Although the terms such as 1-main pipe, 2-auxiliary pipe, 3-main pipe perforated steel plate, 4-auxiliary pipe perforated steel plate, 5-steel plate round hole, 6-slurry, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. An offshore engineering group tenon grouting connection section with excellent fatigue performance, characterized in that: The grouting connection section includes a main pipe (1), an auxiliary pipe (2), a main pipe perforated steel plate (3), an auxiliary pipe perforated steel plate (4), a round hole in the steel plate (5), and a grout (6).

2. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 1, characterized in that: Longitudinally welded on the inner wall of the main pipe (1) and the outer wall of the auxiliary pipe (2) are the main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) respectively.

3. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 2, characterized in that: The main pipe perforated steel plate (3) and the auxiliary pipe perforated steel plate (4) are provided with round holes in the steel plate (5).

4. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 2, characterized in that: The main pipe perforated steel plate (3) on the inner wall of the main pipe (1) and the auxiliary pipe perforated steel plate (4) on the outer wall of the auxiliary pipe (2) can be aligned or misaligned.

5. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 2, characterized in that: The main pipe perforated steel plate (3) on the inner wall of the main pipe (1) and the auxiliary pipe perforated steel plate (4) on the outer wall of the auxiliary pipe (2) can have different dimensions.

6. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 1, characterized in that: The auxiliary pipe (2) can be located outside the main pipe (1). At this time, the auxiliary pipe perforated steel plate (4) is arranged inside the auxiliary pipe (2), and the main pipe perforated steel plate (3) is arranged outside the main pipe (1).

7. An offshore engineering group tenon grouting connection section with excellent fatigue performance according to claim 1, characterized in that: The force transmission mode of the grouting connection section is: main pipe (1) → main pipe perforated steel plate (3) → grout (6) → auxiliary pipe perforated steel plate (4) → auxiliary pipe (2).

8. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 1, characterized in that: The grout (8) can be a high-performance grouting material or high-strength concrete.

9. The marine engineering group tenon grouting connection section with excellent fatigue performance according to claim 1, wherein: This grouting connection section is used for the connection between the jacket of the jacket foundation of offshore wind power and offshore platforms and the pile foundation, the connection between the tower barrel of the monopile foundation of offshore wind power and the pile foundation, and the connection between the main piles of bored cast-in-place piles for offshore wind power and offshore platforms.

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