Bridge simply supported beam segment assembling construction method for frigid plateau region

The invention discloses a bridge simply supported beam segment assembling construction method for a frigid plateau region. The method comprises the steps of girder fabrication yard building, beam segment prefabricating, mobile support assembling, beam segment conveying and hoisting, wet joint construction, prestressed steel strand tensioning and prestressed duct grouting. According to the construction method, SX64/2200 mobile supports are adopted, the construction technology is advanced, the mechanical degree is high, the bridge forming speed is high, and no interference is produced for underbridge traffic; frigid plateau region wet joint construction is carried out inside the mobile supports, and the construction quality is easy to control; due to the fact that frigid plateau region box beam segment assembling construction is mainly carried out inside the mobile supports, construction is safe.