Transverse block main cable saddle suitable for space cable suspension bridge and construction method of transverse block main cable saddle

The invention discloses a transverse block main cable saddle suitable for a space cable suspension bridge and a construction method thereof, and the transverse block main cable saddle comprises a supporting platform which is fixedly installed on the top of a main tower; the upper bearing plate comprises two movable plates, the two movable plates are oppositely arranged on the two sides of the top of the supporting platform with the center line of the bridge as the axis and are in sliding connection with the supporting platform, and detachably-connected connecting plates are arranged on the adjacent sides of the two movable plates; any saddle head is fixed to the top of the corresponding movable plate and is provided with an independent saddle groove structure; the two transverse pushing devices are arranged to be used for pushing the corresponding movable plates in the transverse bridge direction; the longitudinal pushing device is used for pushing the upper bearing plate in the bridge direction. According to