Business line tunnel and bridge section concrete tie renewal method

The invention discloses a business line tunnel and bridge section concrete tie renewal method, and relates to the technical field of operation railway tunnel and bridge section concrete tie renewal. The business line tunnel and bridge section concrete tie renewal method includes the steps of tie unloading, construction preparation, tie reshipment, tie box railway ballast opening, fastener disassembly, old tie extraction, ballast bed leveling, new tie penetration, fastener installation, railway ballast backfilling, track lifting, tamping and finishing, anti-crawling device and gauge installation, old material recovery, acceptance and opening, rechecking and renovation. A train passes a tunnel needing tie renewal, new ties are transported by the train, unloaded at two ends of the tunnel andmanually transported, the unloaded ties are placed on two sides of a track forwards, the quantity ratio of the ties on two sides of the track is 3:2, workers can conveniently and simultaneously startworking from two sides, cr