Reserved length of prestressed reinforcement of uplift pile

Not less than 60 cm. Anchor length should be reserved for reinforcement at the top of uplift pile. After the steel bar is straightened, it inclines upward at an angle of 30 degrees with the center line of the pile, and the anchorage does not enter the raft. The reserved anchorage length of pile top reinforcement shall not be less than 60 cm. Traditional uplift piles are designed by controlling the width of concrete cracks, and the stress of steel bars has not been fully exerted.