Fan foundation rapid repairing method

Abstract

The invention relates to a fan foundation rapid repairing method which sequentially comprises the following steps of a deviation rectifying procedure, a grouting procedure and a reinforcing procedureand is characterized in that in the reinforcing procedure, the upper surface of a concrete foundation layer is provided with a plurality of annular grooves with an axis of a foundation ring as the circle center, and the bottom of each annular groove is inclined downwards; the upper surface of the concrete foundation layer is provided with a prestressed reinforced concrete layer which is internallyprovided with at least one grouting reinforcing ring also arranged surrounding the periphery of the foundation ring; and by pouring concrete in the grouting reinforcing ring through a grouting pipe,the grouting reinforcing ring expands outwards to extrude the prestressed reinforced concrete layer, and prestress tension is achieved. The fan foundation rapid repairing method has the advantages that rapid repair of a fan foundation is performed by combining grouting and prestressed reinforcement, the strength level of the prestressed reinforced concrete layer reaches C40 or above, and structurestrengthening of a concrete foundation is realized.

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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