The invention discloses a method, comprising the steps of distributing movable work sheds in a separate warehouse mode in a dry dock according to the amount of section bodies of each tube section, utilizing a reinforcing steel bar binding platform, a formwork trolley and a concrete maintaining platform, performing immersed tube full-section integrated type large-volume concrete continuous pouringconstruction after inner and outer formworks of the section bodies of the tube sections are installed in place. The reinforcing steel bar binding platform, the formwork trolley and the concrete maintaining platform all can both relay on axial slippage rails, free movement or stay can be performed according to a work procedure need, and branch-operation non-interval branch warehouse flow line continuous pouring construction among adjacent section bodies can be achieved. The movable work sheds of the dry dock are utilized to prefabricate the immersed tube, formwork displacement is easy to control, and the location accuracy is higher; tube section prefabricating construction is converted into construction in the movable work sheds from outdoor construction, so that effects of the surroundingenvironmental conditions are weakened, temperature effects are greatly reduced, a work period is shortened, and the problem that the adjacent tube sections can generate cracks due to different ages issimultaneously solved.