[Objectives] In order to study the crashworthiness of a nuclear power platform's double-layer side structure.
[Methods] The finite element models of the full platform and partial double-side structure were established respectively, and the collision was carried out via LS-DYNA software. Based on the simulation analysis, a scaled quasi-static squeeze test model was designed, and the quasi-static squeeze test of the double-side structure was carried out and compared with the numerical simulation. [Results] The results show that for the low-speed collision of ships, the local structural model can be used to replace the whole ship model to calculate and analyze the collision response to save time; the quasi-static scaled test results are in good agreement with the numerical simulation results. It reflects the characteristics and structural deformation mode, and the double-side structure of the nuclear power platform maintain intact when it was collided by a 5000t ship at a speed of 2m/s, which means it has good crashworthiness. [Conclusions] The research work provides a valuable reference for the design of the crashworthy structure in marine engineering.