Segmental manufacturing method for deck

The invention discloses a segmental manufacturing method for a deck and relates to the technical field of shipbuilding. A deck web beam comprises a first part and a second part. The segmental manufacturing method for the deck comprises the following steps: firstly, docking the first part and the second part; secondly, performing tire loading, positioning and mounting on a web beam formed by the first part and the second part. According to the segmental manufacturing method for the deck, provided by the invention, respective positioning of the first part and the second part is eliminated, segmental manufacturing processes are reduced, a welding form is changed into a plain docking form, the welding difficulty is reduced, and the welding quality is guaranteed.