Repairing and reinforcing structure for crack-damaged slide-resistant pile and construction method of repairing and reinforcing structure

The repairing and reinforcing structure comprises an I-shaped steel reinforcing structure and a pre-stressed anchor cable reinforcing structure which are symmetrically arranged relative to the center line of the tension side of the anti-slide pile, and the I-shaped steel reinforcing structure comprises reinforcing holes and I-shaped steel which are located in a pile body of the anti-slide pile and close to reinforcing steel bars on the tension side of the anti-slide pile. The I-shaped steel is embedded into the reinforcing holes, the bottom end and the top end of the I-shaped steel exceed bottom cracks and top cracks of the pile body respectively, the long edge direction of a web of the I-shaped steel is arranged in the shear direction of the anti-slide pile, and cement paste is injected into the reinforcing holes; the anchoring holes comprise free-section anchor cable holes located on the upper portion and anchoring-section anchor cable holes located on the lower portion, the lower ends of the free-section a