Dismantling method of steel pipe piles for foundation of offshore wind turbines

Abstract

The invention provides a dismounting method for a basic steel pipe pile of an offshore wind turbine. The dismounting method comprises the steps of fixing a to-be-dismounted steel pipe pile, reinforcing soil around the fixed steel pipe pile,, cleaning the inside of the steel pipe pile, and cutting the cleaned steel pipe pile. The to-be-dismounted steel pipe pile is fixed, so that the steel pipe pile can be stabilized in the subsequent cutting process; the soil around the steel pipe pile is reinforced, so that the sand-casting phenomenon in the cutting process can be prevented, and the safe cutting process is guaranteed; and the inside of the steel pipe pile is cleaned, so that the situation that the eyesight is influenced by impurities such as concrete in the steel pipe pile in the cuttingprocess can be prevented. According to the dismounting method, the construction safety can be guaranteed, and the dismounting efficiency is high.

Description

technical field [0001] The invention relates to the technical field of offshore wind turbine construction, in particular to a method for removing foundation steel pipe piles of an offshore wind turbine. Background technique [0002] Offshore wind power technology has entered a period of large-scale development. As more and more offshore wind farms are put into operation, the issue of how to dismantle wind farms after reaching the design life has also received more and more attention. At present, there is no domestic construction method specifically for removing the steel pipe pile foundation after the offshore wind turbine reaches the service life. During the construction of existing cross-sea and river-crossing bridges and dams, blasting methods are generally used to demolish underwater temporary structures, which requires accurate pre-buried blasting pipelines and strict control of explosives during construction, which leads to complicated and inconvenient construction lay...

AI Technical Summary

Problems solved by technology

During the construction of existing cross-sea and river-crossing bridges and dams, blasting methods are generally used to demolish underwater temporary structures, which requires accurate pre-buried blasting pipelines and strict control of explosives during construction, which leads to complicated and inconvenient construction layouts, and blasting There are relatively large safety hazards in the construction, and it will also cause pollution to the environment in the area where the project is located.

The construction of offshore wind farms belongs to a new field. The construction conditions are complex and the management and coordination are difficult. It is impossible to form a mature, economical, safe and reliable process for the removal and construction of steel pipe pile foundations for offshore wind farms. The sustainable development of offshore wind farms has been restricted. It has a certain impact on the restoration of the ecological environment in the project sea area, and it also leaves technical difficulties

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