Construction method based on high-altitude suspension steel cable bridge

The invention discloses a construction method based on a high-altitude suspended steel cable bridge, and relates to the technical field of buildings, and the construction method comprises the following steps: S10, temporarily reinforcing a stress layer structure at a position where a connecting bridge is mounted so as to ensure the structural strength and stability of the position where the connecting bridge is mounted; s20, pre-embedded components and sliding rails are installed, and temporary positioning and supporting are conducted on the bottoms of the splicing sections; s30, components of the connecting bridge segments at the two ends of the connecting bridge are slid, installed and positioned through lifting equipment; s40, in the middle double-machine lifting part, components of the middle section of the connecting bridge are subjected to ground welding, polishing and paint brushing, and meanwhile temporary fixing lug plates are welded; s50, overall lifting work is conducted on the middle section of th