A quick repair method for wind turbine foundation

Abstract

The invention relates to a quick repair method for fan foundations. The method sequentially includes a deviation correction process, a grouting process, and a reinforcement process. The bottom of the annular groove is inclined downward; the upper surface of the concrete base layer is provided with a prestressed reinforced concrete layer, and at least one grouting reinforcement ring is also arranged around the periphery of the foundation ring; through the grouting pipe to Concrete is injected into the grouting reinforcement ring, so that the grouting reinforcement ring expands outwards and extrudes the prestressed reinforced concrete layer to realize prestressed tension. The invention has the advantages that: the method of combining grouting and prestressed reinforcement is used to quickly repair the foundation of the fan, and the strength level of the prestressed reinforced concrete layer reaches C40 or higher, so that the structure of the concrete foundation can be strengthened.

Description

technical field [0001] The invention relates to a method for repairing a concrete foundation, in particular to a method for rapidly repairing a fan foundation. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. With the development of the global economy, the wind energy market has also developed rapidly. China's wind energy reserves are large and widely distributed. The wind energy reserves on land alone are about 253 million kilowatts. In recent years, my country's wind power industry has developed rapidly, and there is a strong demand for onshore wind turbine infrastructure. [0003] The foundation ring and foundation anchor bolt foundations imported from abroad are widely used in the onshore wind power industry. The foundation ring or foundation anchor bolts are fixed on the ground through the concrete foundation. The upper flange connection of the foundation anchor is fixed....

AI Technical Summary

Problems solved by technology

But it still has certain defects: the strength of the post-cast reinforced concrete reinforcement layer is not enough, and at the same time, the combination with the original foundation is improved only through simple chiseling treatment and chemical reinforcement; in addition, although the construction of the concrete reinforcement layer is in progress In the middle, waterproofing treatment is usually required, but it is still unavoidable to avoid the problem of water-stopping effectiveness at the junction of the foundation ring and the concrete during later use

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