Pile foundation with anti-impact structure for offshore wind power and construction method thereof

Patent metadata

Field	Value
Publication number	US-12123156-B2
Application number	US-202217946009-A
Country	US
Kind code	B2
Filing date	Sep 15, 2022
Priority date	Jan 14, 2022
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A pile foundation with an anti-impact structure for offshore wind power and a construction method thereof are provided. The anti-impact structure is sleeved on the pile foundation, and includes a first hoop, an impact absorption assembly and a second hoop. The impact absorption assembly includes a plurality of impact absorption rollers arranged around the pile foundation. Each of the impact absorption rollers includes a support shaft mechanism, an elastic absorber, a first sliding mechanism and a second sliding mechanism. The first sliding mechanism is slidably connected to the first hoop. The second sliding mechanism is slidably connected to the second hoop. The support shaft mechanism is rotatable relative to the first sliding mechanism and the second sliding mechanism.

First claim

What is claimed is:

1. A pile foundation, comprising an anti-impact structure for offshore wind power, wherein the anti-impact structure is sleeved on the pile foundation, and comprises a first hoop, an impact absorption assembly and a second hoop that are arranged in sequence from top to bottom; the first hoop and the second hoop are configured to hold the pile foundation tightly; the impact absorption assembly comprises a plurality of impact absorption rollers arranged around the pile foundation; each of the impact absorption rollers comprises a support shaft mechanism vertically arranged along the pile foundation, an elastic absorber sleeved on the support shaft mechanism, a first sliding mechanism rotatably arranged at an upper end of the support shaft mechanism, and a second sliding mechanism rotatably arranged at a lower end of the support shaft mechanism; the first sliding mechanism is slidably connected to the first hoop; the second sliding mechanism is slidably connected to the second hoop; and the support shaft mechanism is rotatable relative to the first sliding mechanism and the second sliding mechanism.

2. The pile foundation according to claim 1 , wherein the support shaft mechanism comprises a central shaft, a sleeve sleeved outside the central shaft, and a hub fixedly arranged between the central shaft and the sleeve; and upper and lower ends of the central shaft are respectively and rotatably connected to the first sliding mechanism and the second sliding mechanism.

3. The pile foundation according to claim 2 , wherein the first sliding mechanism is a first roller wheel mechanism, and comprises a first wheel shaft and first roller wheels arranged on the first wheel shaft; and an upper end of the central shaft is rotatably connected to the first wheel shaft.

4. The pile foundation according to claim 3 , wherein the first hoop is provided with a first slide rail, the first slide rail is formed with a first slide rail groove, the first roller wheel mechanism is located in the first slide rail groove, and the first roller wheels of the first roller wheel mechanism are slidably connected to the first slide rail groove.

5. The pile foundation according to claim 2 , wherein the second sliding mechanism is a second roller wheel mechanism, and comprises a second wheel shaft and second roller wheels arranged on the second wheel shaft; and a lower end of the central shaft is rotatably connected to the second wheel shaft.

6. The pile foundation according to claim 5 , wherein the second hoop is provided with a second slide rail, the second slide rail is formed with a second slide rail groove, and the second roller wheel mechanism is located in the second slide rail groove, and the second roller wheels of the second roller wheel mechanism are slidably connected to the second slide rail groove.

7. The pile foundation with an anti-impact structure for offshore wind power according to claim 1 , wherein the first hoop comprises at least two first hoop components, the first hoop components are of an arc-shaped structure, and the first hoop components are connected end to end by bolts to form the first hoop.

8. The pile foundation with an anti-impact structure for offshore wind power according to claim 1 , wherein the second hoop comprises at least two second hoop components, the second hoop components are of an arc-shaped structure, and the second hoop components are connected end to end by bolts to form the second hoop.

9. A construction method of a pile foundation with an anti-impact structure for offshore wind power, the construction method comprising the following steps:
step S 100 : designing a size of support shaft mechanisms, elastic absorbers, first sliding mechanisms and second sliding mechanisms of the anti-impact structure according to measurement information before construction, and completing prefabrication of the support shaft mechanisms, the elastic absorbers, the first sliding mechanisms and the second sliding mechanisms in a factory;
step S 200 : after the prefabrication is completed, assembling the support shaft mechanisms, the elastic absorbers, the first sliding mechanisms and the second sliding mechanisms that are prefabricated in the factory, so as to form impact absorption rollers;
step S 300 : assembling first hoop components, second hoop components and a plurality of the impact absorption rollers into anti-impact structure modules; and
step S 400 : installing at least two fabricated anti-impact structure modules to the pile foundation, and performing end-to-end connection by bolts to form the anti-impact structure.

10. The construction method according to claim 9 , wherein in the step S 400 , when the first hoop components and the second hoop components are connected to the pile foundation, rubber pads are placed on inner sides of the first hoop components and the second hoop components.

Assignees

• Univ Zhejiang

Inventors

• Zhu Ronghua

Classifications

• E02B2017/0091

  Offshore structures for wind turbines · CPC title

• F05B2240/95

  offshore · CPC title

• E02B2017/0065

  Monopile structures · CPC title

• F03D13/25

  specially adapted for offshore installation · CPC title

• E02D27/425

  specially adapted for wind motors masts (wind motors per se F03D1/00) · CPC title