Immersed tube industrial construction method and system without traditional dry dock

The invention provides an immersed tube industrial construction method and system without a traditional dry dock. The method comprises the steps that S1, steel shell segments are machined; s2, the steel shell sections are spliced to form a steel shell, and the steel shell enters a pouring area; s3, self-compacting concrete is poured into the steel shell to form immersed tube joints; the immersed tube comprises a plurality of immersed tube sections which are spliced in the axial direction, each immersed tube section comprises a steel shell and a concrete structure in the steel shell, and the steel shell comprises a plurality of steel shell sections which are spliced in the axial direction. According to the immersed tube joint, the construction technology of steel shell manufacturing, steel shell assembling, launching and floating state pouring is adopted, the working procedures of molding, reinforcing steel bar binding and the like are omitted in the construction process, the steel shell prefabricating efficie