Manufacturing process for offshore wind power foundation steel pipe pile

Abstract

The invention discloses a manufacturing process for an offshore wind power foundation steel pipe pile. The manufacturing process comprises the following steps of pipe joint blanking, pipe joint grooveprocessing, pipe joint rolling formation, pile body top flange assembling, pipe joint splicing and anticorrosive coating painting. According to the manufacturing process, from material selection, blanking to manufacturing process of steel plates for the steel pipe pile, the roundness and straightness of a pile body are detected and adjusted at any time, and the welding materials and welding processes are strictly controlled. In addition, the coating process of an anticorrosive coating is strictly carried out, so the impact resistance of the steel pipe pile can be effectively improved, it is guaranteed that a pile foundation is driven into a soil layer smoothly, and the corrosion resistance requirement of the steel pipe pile can be met.

Description

technical field [0001] The invention relates to a manufacturing process of steel pipe piles for offshore wind power foundations. Background technique [0002] At present, in order to save costs, domestic offshore wind power projects often use relatively high-power wind turbines, and the load on the upper part of the wind turbine is relatively large, and the shallow surface layer in domestic coastal areas is mostly muddy soft soil. The compressive bearing layer is very deep, and if ordinary pile foundations are used, a pile hammer with a large impact force must be used for pile sinking. It will be difficult to adapt to conventional reinforced concrete and prestressed concrete piles, so steel pipe piles are often used for reinforcement. foundation. The monopile foundation is the most widely used wind turbine foundation type in offshore wind farms. In the current European wind farms, the monopile foundation accounts for more than 70%. The piles are driven into the seabed to a...

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Problems solved by technology

[0002] At present, in order to save costs, domestic offshore wind power projects often use relatively high-power wind turbines, and the load on the upper part of the wind turbine is relatively large, and the shallow surface layer in domestic coastal areas is mostly muddy soft soil. The compressive bearing layer is very deep, and if ordinary pile foundations are used, a pile hammer with a large impact force must be used for pile sinking. It will be difficult to adapt to conventional reinforced concrete and prestressed concrete piles, so steel pipe piles are often used for reinforcement. foundation

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