Fan foundation reconstruction structure and reconstruction method

Abstract

The invention discloses a fan foundation reconstruction structure and reconstruction method. The fan foundation reconstruction structure comprises an original fan foundation; the original fan foundation is arranged in a circular truncated cone shape; a concrete reinforcing layer is additionally arranged on the inclined plane of the original fan foundation; the reinforcing layer is connected with the original fan foundation and a rock foundation through a plurality of first anchor cables; the position of a new foundation ring is determined through positioning and leveling; and then a concrete layer is poured on the top face of the original fan foundation; and after the strength of concrete reaches a design value, the new foundation ring and the original fan foundation are anchored and connected through a second anchor cable, and prestress is applied. Therefore, all the parts can be connected to form an integral structure form so as to ensure the safety of the new foundation ring and thesafety of the upper structure; and meanwhile, the integral anti-overturning capability of the fan is also improved, so that the modified fan foundation can adapt to a new fan unit.

Description

technical field [0001] The invention relates to the technical field of wind power generation foundations, in particular to a wind turbine foundation transformation structure and transformation method. Background technique [0002] In the past 20 years, my country's wind power generation has been very rapid, especially since 2010, my country's wind power generation has developed rapidly, and with the development of technology, the power generation has become larger and larger. The design service life of wind turbines is 20 years, but the design service life of land acquisition and civil engineering is 50 years, and the early wind turbines were built in good wind fields. In order to reduce land damage and reduce construction waste, the benefits of making full use of the original foundation to build new wind turbines after the wind turbines are decommissioned are considerable. However, for some wind turbines and wind farms that need to be eliminated and updated, the existing t...

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Problems solved by technology

However, for some wind turbines and wind farms that need to be eliminated and updated, the existing technology has not given a specific method for how to deal with the remaining wind turbine foundations; Inconsistent with the original wind turbines, the general situation is that the new wind turbines have larger capacity and higher height, and the foundation of the original wind turbines cannot meet the structural safety requirements of the new wind turbines. The prior art does not provide a corresponding technical solution

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