Three-cylinder fan foundation recycling construction method

A technology for fan foundation and construction method, applied in basic structure engineering, construction, etc., can solve problems such as high demolition cost, and achieve the effects of short construction period, avoidance of damage, and good construction economy.

Inactive Publication Date: 2019-08-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of dismantling construction and dismantling of offshore wind farms has attracted more and more attention. In 2017, DONG ENERGY dismantled 11 wind turbines at the Vindeby offshore wind farm that had been in operation for more than 25 y

Method used

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  • Three-cylinder fan foundation recycling construction method
  • Three-cylinder fan foundation recycling construction method
  • Three-cylinder fan foundation recycling construction method

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Embodiment Construction

[0039] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0040] The invention discloses a construction method for recovering the foundation of a three-cylinder fan. figure 1 with figure 2 As shown, the three-cylinder fan foundation includes a cylindrical foundation 3 composed of three single cylinders arranged in an equilateral triangle. The upper jacket and the fan structure 1 are connected above the cylindrical foundation 3. The top cover of the cylindrical foundation 3 is provided with a drainage pipe 2. . When the three-cylinder fan foundation is in place, the cylindrical foundation 3 is located in the seabed 4 .

[0041] The three-barrel fan foundation recovery construction method of the present invention is specifically carried out according to the following steps:

[0042] (1) if image...

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Abstract

The invention belongs to the technical field of offshore wind power foundation recycling, and discloses a three-cylinder fan foundation recycling construction method. The method comprises the steps that the manner of conducting water injection pressurization on two single cylinders is adopted to enable a whole fan foundation to incline to the direction of another single cylinder, and then water pressure of the two single cylinders is released; the first is repeatedly conducted till the three single cylinders incline sequentially, water is simultaneously injected into the three single cylindersfor pressurization, and then the cylinder-type foundation is lifted; after the cylinder-type foundation is lifted to a certain height from the initial height, water injection is stopped, and air inflation is simultaneously conducted on the three single cylinders to enable the cylinder-type foundation is continuously lifted; after the air inflation amount meets the design requirement, if the cylinder-type foundation is kept lifting continuously, and then the cylinder-type foundation is lifted to the water surface; and if the cylinder-type foundation does not continuously lift, the cylinder-type foundation is lifted to the water surface through the up-pulling force of lifting ropes, and then recycling work of the three-cylinder fan foundation is completed. According to the three-cylinder fan foundation recycling construction method, integrated recycling of the foundation and a fan is achieved, and large construction equipment is not needed; and meanwhile, the construction economic efficiency is good, and the construction period is short.

Description

technical field [0001] The invention belongs to the technical field of recovery of offshore wind power foundations, and in particular relates to a construction method for recovery of foundations of three-cylinder wind turbines. Background technique [0002] Offshore wind power has the characteristics of large wind power, stable wind resources, and nearby consumption of power generation energy. In recent years, offshore wind power has been widely developed. From 2013 to 2017, the new capacity and cumulative capacity of offshore wind turbines in my country showed a trend of gradual expansion. In 2017, 319 new installed capacity were added, and the new installed capacity reached 1.16 million kilowatts, a year-on-year increase of 96.5%, and the cumulative installed capacity reached 2.79 million kilowatts. At present, the design service life of offshore wind power is about 20 years. After the service period is over, the wind power foundation should be demolished and upgraded or ...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D35/00
CPCE02D27/425E02D35/005
Inventor 张浦阳丁红岩练继建翟汉波
Owner TIANJIN UNIV
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