Method for jacking and positioning curved section of ship

The invention relates to a method for jacking and positioning a curved section of a ship, which comprises the following steps of: 1, calculating the gravity center position of the section before constructing the curved section; at least four jacking positions are selected along the two sides of the gravity center; 2, a supporting seat device is installed at the selected jacking position, and the supporting seat device is fixed to the outer plate below the subsection; 3, total assembly jig frames are installed on the total assembly site, and walking channels and operation positions of the three-dimensional jacking devices are reserved between the total assembly jig frames; 4, after the sections are hoisted to the position above the total assembly jig frame through a crane, the sections are removed through the crane; and 5, the three-dimensional jacking device moves to the position below the supporting seat device, and the moving sections are jacked through the three-dimensional jacking device to be positioned