Design method for SPMT vehicle and barge transfer large modular steel structure

The invention discloses a method for designing a large modular steel structure for SPMT vehicle and barge transfer, which is used for designing a support of a steel structure module, ensuring that the state of the steel structure module is consistent with design analysis in the transportation process, and ensuring the safety. Simulation software is used for carrying out stress analysis on a supporting structure in the transportation process of the steel structure module, the borne counter force is released, boundary conditions in the transportation process of the steel structure module are obtained after multiple iterations, a supporting tool is designed according to the boundary conditions, and safety and stability in the transportation process of the steel structure module are guaranteed; the actual transportation working condition can be simulated and analyzed more accurately through simulation analysis, temperature load and wind load can be added, stress analysis is conducted by effectively utilizing stru