Modularized immersed tube transportation and installation catamaran

The utility model relates to a modularized immersed tube transportation and installation catamaran, which belongs to the technical field of immersed tube tunnel construction and comprises two symmetrically arranged sheet bodies, at least two connecting bridge barges and an immersed tube lowering mechanism. Each sheet body is formed by detachably connecting a buoyancy tank barge and a torsion-resistant tank barge; the anti-torsion box barge is detachably mounted at the top of the buoyancy box barge; the connecting bridge barges are arranged in the transverse direction of the sheet bodies, the two ends of each connecting bridge barge are detachably connected to the tops of the buoyancy tank barges of the two sheet bodies respectively, the multiple connecting bridge barges are distributed in the longitudinal direction of the sheet bodies at intervals, and the torsion-resistant tank barges are detachably connected between the ends, connected with the same sheet body, of every two adjacent connecting bridge barges