High-speed rail curve ultrahigh section ballastless track plate replacement method

The invention provides a high-speed rail curve ultrahigh section ballastless track plate replacement method, which relates to the technical field of railway ballastless track structure repair, and comprises the following steps: pre-planting a threaded rod in an early-stage skylight, pouring a leveling platform, chiseling away wide and narrow joints, and clamping and limiting a track plate; the skylight is developed on the day: entering a track car set, assembling an in-situ lifting machine, loosening a fastener and installing a track shifting device, transversely shifting a track, stripping, lifting and moving out a track plate, resetting a steel rail, temporarily supporting, installing the track shifting device, shifting the steel rail aside, cleaning a mortar layer, resetting the track plate, resetting the steel rail, temporarily supporting, combining the track car, finely adjusting the track plate and refilling the mortar layer; recovering and adjusting the line; and follow-up skylight development: chiseli